/* ============================================================
   PREMIUM DESIGN SYSTEM — v3.0
   ============================================================ */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root {
  /* Premium palette - JIUFANG ANZHU (Architecture / Consulting Theme) */
  --primary: #1a1f2e;
  --primary-dark: #0f131c;
  --primary-light: #f0f3f8;
  --accent: #c9a96e;
  --accent-dark: #b8942e;
  --accent-light: #faf7f2;
  --dark: #1a1f2e;
  --dark-2: #2c3e50;
  --text: #1e2330;
  --text-2: #5a6275;
  --text-3: #9ca3af;
  --white: #ffffff;
  --bg: #f5f6f8;
  --bg-2: #eef0f4;
  --border: #e2e6ed;
  --success: #2d6a4f;
  --danger: #c0392b;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 24px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.08);
  --shadow-xl: 0 24px 80px rgba(0,0,0,.12);
  --font: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ===== TOP BAR ===== */
.top-bar {
  background: #fff;
  color: var(--text-2);
  font-size: 13px;
  height: 42px;
  line-height: 42px;
  border-bottom: 1px solid var(--border);
}
.top-bar .container { display:flex; justify-content:space-between; align-items:center; height:100%; }
.top-bar a { color: var(--text-3); margin-left: 18px; font-size: 12px; letter-spacing: .5px; }
.top-bar a:hover { color: var(--primary); }

/* ===== HEADER ===== */
.header {
  background: rgba(255,255,255,.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-lg); }
.header-inner {
  display: flex;
  align-items: center;
  height: 80px;
  gap: 14px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -.5px;
  flex-shrink: 0;
}
.logo svg { width: 40px; height: 40px; flex-shrink: 0; }
.logo-text { font-size:22px; font-weight:800; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.logo-name {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: .5px;
  white-space: nowrap;
  line-height: 1.15;
}
.logo-img { height: 64px; width: auto; }

/* ===== NAVIGATION (logo右侧) ===== */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  border-radius: 8px;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: var(--primary); background: var(--primary-light); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header-tel {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -.5px;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  cursor: pointer;
  color: var(--text);
  padding: 8px;
}
/* Header login/register buttons */
.header-login-btn {
  display:inline-block; padding:8px 18px; color:var(--primary); font-weight:600; font-size:14px;
  text-decoration:none; border:1.5px solid var(--primary); border-radius:var(--radius);
  transition:all .2s; white-space:nowrap;
}
.header-login-btn:hover { background:var(--primary); color:#fff; }
.header-register-btn {
  display:inline-block; padding:8px 18px; background:var(--primary); color:#fff;
  font-weight:600; font-size:14px; text-decoration:none; border-radius:var(--radius);
  transition:all .2s; white-space:nowrap;
}
.header-register-btn:hover { background:var(--primary-dark); }

/* ===== HERO SLIDER ===== */
.hero-slider { position:relative; width:100%; height:clamp(360px,45vw,620px); overflow:hidden; }
.slider-track { position:relative; width:100%; height:100%; }
.slider-slide { position:absolute; inset:0; opacity:0; transition:opacity .8s ease, transform .8s ease; }
.slider-slide.active { opacity:1; z-index:1; transform:scale(1); }
/* Slide 1: fade only */
.slider-slide:nth-child(1) { transform:scale(1); }
/* Slide 2: slide in from right */
.slider-slide:nth-child(2) { transform:translateX(40px); }
.slider-slide:nth-child(2).active { transform:translateX(0); }
/* Slide 3: slight zoom in */
.slider-slide:nth-child(3) { transform:scale(1.06); }
.slider-slide:nth-child(3).active { transform:scale(1); }
/* Slide 4+: from bottom */
.slider-slide:nth-child(n+4) { transform:translateY(30px); }
.slider-slide:nth-child(n+4).active { transform:translateY(0); }
.slider-slide img { width:100%; height:100%; object-fit:cover; display:block; }
.slider-overlay { position:absolute; inset:0; background:linear-gradient(135deg, rgba(10,14,22,.82) 0%, rgba(15,19,28,.55) 45%, rgba(0,0,0,.4) 100%); display:flex; align-items:center; }
.slider-overlay .container { position:relative; z-index:2; }
.slider-overlay h1, .slider-overlay h2 { font-size:clamp(36px,5vw,66px); font-weight:900; color:#fff; letter-spacing:-1px; line-height:1.15; margin-bottom:16px; text-shadow:0 2px 12px rgba(0,0,0,.45); white-space:nowrap; }
.slider-overlay h1 span, .slider-overlay h2 span { color:var(--accent); }
.slider-overlay p, .slider-desc { font-size:clamp(16px,2vw,20px); color:rgba(255,255,255,.92); margin-bottom:28px; max-width:680px; line-height:1.6; text-shadow:0 1px 6px rgba(0,0,0,.35); white-space:nowrap; }
/* 轮播文字入场动画 */
.slider-slide .slider-title, .slider-slide .slider-desc, .slider-slide .slider-btn { opacity:0; transform:translateY(36px); transition:opacity 1s cubic-bezier(.25,.46,.45,.94), transform 1s cubic-bezier(.25,.46,.45,.94); }
.slider-slide.active .slider-title { opacity:1; transform:translateY(0); transition-delay:.2s; }
.slider-slide.active .slider-desc { opacity:1; transform:translateY(0); transition-delay:.45s; }
.slider-slide.active .slider-btn { opacity:1; transform:translateY(0); transition-delay:.7s; }
.slider-btn { display:inline-block; padding:16px 42px; background:var(--accent); color:#fff; font-size:16px; font-weight:700; border-radius:8px; transition:all var(--transition); box-shadow:0 4px 20px rgba(0,0,0,.3); text-decoration:none; }
.slider-btn:hover { background:var(--accent-dark); transform:translateY(-2px); }
.slider-arrow { position:absolute; top:50%; transform:translateY(-50%); z-index:10; background:rgba(0,0,0,.25); color:#fff; border:none; width:52px; height:52px; font-size:24px; cursor:pointer; border-radius:50%; transition:all var(--transition); opacity:.6; }
.slider-arrow:hover { background:rgba(0,0,0,.5); opacity:1; }
.slider-arrow.prev { left:20px; }
.slider-arrow.next { right:20px; }
.slider-dots { position:absolute; bottom:90px; left:50%; transform:translateX(-50%); z-index:10; display:flex; gap:10px; }
.slider-dots span { width:10px; height:10px; border-radius:50%; background:rgba(255,255,255,.4); cursor:pointer; transition:all var(--transition); }
.slider-dots span.active { background:#fff; width:28px; border-radius:5px; }
.slider-search { position:absolute; bottom:20px; left:50%; transform:translateX(-50%); z-index:10; width:90%; max-width:600px; }
@keyframes fadeUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
@media (max-width:768px) { .hero-slider{height:auto;aspect-ratio:1920/860} .slider-slide img{object-fit:contain} .slider-overlay h1,.slider-overlay h2{font-size:28px;white-space:normal} .slider-overlay p,.slider-desc{font-size:15px;white-space:normal;max-width:100%} .slider-search{display:none} .slider-arrow{width:36px;height:36px;font-size:16px} .slider-arrow.prev{left:8px} .slider-arrow.next{right:8px} .slider-dots{bottom:8px} }

/* ===== SECTION COMMON ===== */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header .label { display: inline-block; font-size: 13px; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; }
.section-header h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 900; color: var(--dark); letter-spacing: -1px; margin-bottom: 12px; }
.section-header p { font-size: 17px; color: var(--text-3); max-width: 560px; margin: 0 auto; }

/* ===== ADVANTAGE CARDS ===== */
.adv-section { background: #fff; padding: 0; }
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.adv-item {
  text-align: center;
  padding: 48px 32px;
  transition: all var(--transition);
  border-right: 1px solid var(--border);
  position: relative;
}
.adv-item:last-child { border-right: none; }
.adv-item:hover { background: var(--bg); transform: translateY(-4px); }
.adv-item .adv-icon { font-size: 40px; margin-bottom: 16px; display: block; }
.adv-item h4 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.adv-item p { font-size: 14px; color: var(--text-3); }
.adv-item::after {
  content: ''; position: absolute; bottom: 0; left: 20%; right: 20%;
  height: 3px; background: var(--primary); border-radius: 3px 3px 0 0;
  transform: scaleX(0); transition: transform var(--transition);
}
.adv-item:hover::after { transform: scaleX(1); }

/* ===== PRODUCT GRID ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: block;
  color: inherit;
  position: relative;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}
.card-img {
  height: 240px;
  background: var(--bg-2);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.card:hover .card-img img { transform: scale(1.08); }
.card-img-placeholder { font-size: 56px; color: var(--text-3); opacity: .5; }
.card-badge {
  position: absolute; top: 16px; left: 16px;
  background: var(--primary); color: #fff;
  font-size: 11px; font-weight: 700;
  padding: 4px 12px; border-radius: 6px;
  z-index: 2; letter-spacing: .5px;
}
.card-body { padding: 20px 24px 24px; }
.card-body h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.card-body .card-desc { font-size: 14px; color: var(--text-3); line-height: 1.5; overflow:hidden; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; }
.card-body .card-meta { display:flex; align-items:center; gap:8px; margin-top:14px; font-size:13px; color:var(--text-3); }

/* ===== PRODUCT LIST PAGE ===== */
.page-hero {
  background: linear-gradient(160deg, #f0f3f8 0%, #e8ecf2 50%, #dce2ea 100%);
  color: var(--dark); padding: 80px 0; text-align: center; position: relative; overflow: hidden;
}
.page-hero::after { content:'';position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--accent); }
.page-hero h1 { font-size: clamp(28px,4vw,44px); font-weight:900; letter-spacing:-1px; }
.page-hero p { font-size:17px; color:var(--text-2); margin-top:10px; }

.products-layout { display:flex; gap:32px; padding:0; }
.products-sidebar { width: 260px; flex-shrink:0; margin-top:-40px; position:sticky; top:130px; align-self:flex-start; z-index:10; }
.cat-card { background:#fff; border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); overflow:hidden; }
.cat-card .cat-header {
  background: #fff;
  color: var(--dark); padding: 22px 24px; font-size: 18px; font-weight: 800;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 2px solid var(--bg);
}
.cat-card .cat-list { padding: 8px 0; }
.cat-card .cat-list a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; font-size: 15px; color: var(--text);
  border-left: 3px solid transparent; transition: all var(--transition);
}
.cat-card .cat-list a:hover { background: var(--bg); color: var(--primary); }
.cat-card .cat-list a.active { background: var(--primary-light); color: var(--primary); font-weight: 700; border-left-color: var(--primary); }
.cat-card .cat-list a .count { font-size: 12px; color: var(--text-3); background: var(--bg); padding: 2px 10px; border-radius: 20px; }
.products-main { flex:1; }
.products-main .toolbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:28px; }
.products-main .toolbar h2 { font-size:24px; font-weight:800; color:var(--dark); }

/* ===== PRODUCT DETAIL ===== */
.product-hero { background:#fff; border-radius:var(--radius-xl); box-shadow:var(--shadow); overflow:hidden; }
.product-hero .ph-layout { display:flex; }
.product-hero .ph-img { width:50%; background:var(--bg-2); display:flex; align-items:center; justify-content:center; padding:40px; }
.product-hero .ph-img img { width:100%; max-height:500px; object-fit:contain; border-radius:var(--radius); }
.product-hero .ph-info { flex:1; padding:48px 40px; display:flex; flex-direction:column; justify-content:center; }
.product-hero .ph-info .cat-tag { display:inline-block; background:var(--primary-light); color:var(--primary); font-size:13px; font-weight:700; padding:6px 16px; border-radius:6px; width:fit-content; margin-bottom:16px; }
.product-hero .ph-info h1 { font-size:32px; font-weight:900; color:var(--dark); margin-bottom:12px; letter-spacing:-.5px; }
.product-hero .ph-info .summary { font-size:17px; color:var(--text-2); line-height:1.8; margin-bottom:24px; padding-bottom:24px; border-bottom:1px solid var(--border); }
.product-hero .ph-info .meta-row { display:flex; gap:40px; font-size:14px; color:var(--text-3); }
.product-hero .ph-info .meta-row strong { color:var(--dark); display:block; font-size:13px; text-transform:uppercase; letter-spacing:1px; margin-bottom:4px; }

.product-content { margin-top:40px; display:grid; grid-template-columns:1fr 320px; gap:32px; }
.product-content .pc-main { background:#fff; border-radius:var(--radius-lg); padding:40px; box-shadow:var(--shadow); }
.product-content .pc-main h3 { font-size:22px; font-weight:800; color:var(--dark); margin-bottom:24px; padding-bottom:16px; border-bottom:2px solid var(--bg); }
.product-content .pc-main .description { font-size:16px; color:var(--text); line-height:2; }
.product-content .pc-main .description img { max-width:100%; border-radius:var(--radius); margin:20px 0; }
.product-content .pc-side .side-card { background:#fff; border-radius:var(--radius-lg); padding:28px; box-shadow:var(--shadow); margin-bottom:24px; }
.product-content .pc-side .side-card h4 { font-size:16px; font-weight:700; color:var(--dark); margin-bottom:16px; }
.product-content .pc-side .rel-item { display:flex; gap:12px; padding:14px 0; border-bottom:1px solid var(--bg); align-items:center; }
.product-content .pc-side .rel-item:last-child { border-bottom:none; }
.product-content .pc-side .rel-item img { width:72px; height:54px; object-fit:cover; border-radius:6px; flex-shrink:0; }
.product-content .pc-side .rel-item .ri-info { flex:1; min-width:0; }
.product-content .pc-side .rel-item .ri-info h5 { font-size:14px; color:var(--dark); margin-bottom:2px; }
.product-content .pc-side .rel-item .ri-info span { font-size:12px; color:var(--text-3); }
.product-content .pc-side .rel-item:hover h5 { color:var(--primary); }

/* ===== ABOUT SECTION ===== */
.about-section { background: #fff; }
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; }
.about-grid .about-img img { width:100%; border-radius:var(--radius-xl); box-shadow:var(--shadow-xl); }
.about-grid .about-text h2 { font-size:clamp(28px,4vw,40px); font-weight:900; color:var(--dark); margin-bottom:20px; letter-spacing:-1px; }
.about-grid .about-text h2 span { color:var(--primary); }
.about-grid .about-text .desc { font-size:16px; color:var(--text-2); line-height:1.9; margin-bottom:30px; }
.about-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.about-stats .stat-card { text-align:center; padding:28px 16px; background:var(--bg); border-radius:var(--radius-lg); transition:all var(--transition); }
.about-stats .stat-card:hover { background:var(--primary); color:#fff; }
.about-stats .stat-card:hover .stat-num { color:#fff; }
.about-stats .stat-card:hover .stat-label { color:rgba(255,255,255,.7); }
.about-stats .stat-num { font-size:36px; font-weight:900; color:var(--primary); display:block; margin-bottom:4px; }
.about-stats .stat-label { font-size:14px; color:var(--text-3); font-weight:600; }

/* ===== QUALITY SECTION ===== */
.quality { background: var(--bg); color: var(--text); position: relative; overflow: hidden; }
.quality::before { content:''; position:absolute; top:0; right:0; width:50%; height:100%; background:linear-gradient(90deg,transparent,rgba(201,169,110,.04)); }
.quality .container { position:relative; z-index:1; }
.quality-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:32px; }
.quality-item { text-align:center; padding:40px 24px; }
.quality-item .q-icon { width:80px; height:80px; background:rgba(201,169,110,.1); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:36px; margin:0 auto 20px; transition:all var(--transition); }
.quality-item:hover .q-icon { background:var(--accent); transform:scale(1.1); }
.quality-item h4 { font-size:19px; font-weight:800; margin-bottom:8px; color:#fff; }
.quality-item p { font-size:14px; color:rgba(255,255,255,.8); line-height:1.7; }

/* ===== CASES ===== */
.cases-section { background: var(--bg); }
.cases-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:4px; }
.cases-grid .case-item { position:relative; overflow:hidden; aspect-ratio:1; cursor:pointer; }
.cases-grid .case-item img { width:100%; height:100%; object-fit:cover; transition:transform .6s ease; }
.cases-grid .case-item:hover img { transform:scale(1.1); }
.cases-grid .case-item .overlay {
  position:absolute; inset:0;
  background:linear-gradient(to top,rgba(0,0,0,.7),transparent);
  display:flex; align-items:flex-end; padding:20px;
  opacity:0; transition:opacity var(--transition);
}
.cases-grid .case-item:hover .overlay { opacity:1; }
.cases-grid .case-item .overlay span { color:#fff; font-size:15px; font-weight:700; }

/* ===== 精选案例轮播（3D 卡片左右切换） ===== */
.case-carousel { position:relative; height:440px; overflow:hidden; }
.case-carousel-viewport { position:relative; width:100%; height:100%; }
.case-carousel .case-card {
  position:absolute; left:50%; top:0;
  width:520px; max-width:82vw; height:440px;
  background:#fff; border-radius:14px; overflow:hidden;
  box-shadow:0 8px 30px rgba(0,0,0,.24);
  transition:transform .55s cubic-bezier(.25,.46,.45,.94), opacity .55s ease;
  will-change:transform,opacity;
}
.case-carousel .case-card-img { width:100%; height:352px; overflow:hidden; background:#eee; }
.case-carousel .case-card-img img { width:100%; height:100%; object-fit:cover; display:block; }
.case-carousel .case-card-title {
  height:88px; line-height:88px; text-align:center;
  padding:0 24px; font-size:18px; font-weight:700; color:#444;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.case-carousel .case-card.is-center { box-shadow:0 14px 44px rgba(0,0,0,.3); }
.case-arrow {
  position:absolute; top:50%; transform:translateY(-50%);
  width:46px; height:46px; border-radius:50%; border:none; cursor:pointer;
  background:rgba(26,31,46,.55); color:#fff; font-size:18px; line-height:1;
  display:flex; align-items:center; justify-content:center;
  transition:.25s; z-index:20;
}
.case-arrow:hover { background:#c9a96e; }
.case-arrow.prev { left:2%; }
.case-arrow.next { right:2%; }
@media (max-width:640px) {
  .case-carousel { height:320px; }
  .case-carousel .case-card { height:320px; }
  .case-carousel .case-card-img { height:244px; }
  .case-carousel .case-card-title { height:76px; line-height:76px; font-size:15px; }
  .case-arrow { width:36px; height:36px; font-size:14px; }
}

/* ===== NEWS ===== */
.news-section { background: #fff; }
.news-grid { display:grid; grid-template-columns:1fr 400px; gap:40px; }
.news-featured { position:relative; border-radius:var(--radius-xl); overflow:hidden; }
.news-featured img { width:100%; height:400px; object-fit:cover; }
.news-featured .nf-overlay {
  position:absolute; bottom:0; left:0; right:0;
  background:linear-gradient(transparent,rgba(0,0,0,.85));
  padding:48px 32px 32px; color:#fff;
}
.news-featured .nf-overlay h3 { font-size:24px; font-weight:800; margin-bottom:8px; }
.news-featured .nf-overlay p { font-size:14px; opacity:.8; }
.news-list-side { display:flex; flex-direction:column; gap:16px; }
.news-list-side .nl-item { display:flex; gap:16px; padding:20px; background:var(--bg); border-radius:var(--radius-lg); transition:all var(--transition); align-items:center; }
.news-list-side .nl-item:hover { background:var(--primary-light); }
.news-list-side .nl-item .nl-date { text-align:center; min-width:56px; }
.news-list-side .nl-item .nl-date .day { display:block; font-size:28px; font-weight:900; color:var(--primary); line-height:1; }
.news-list-side .nl-item .nl-date .month { font-size:12px; color:var(--text-3); }
.news-list-side .nl-item h4 { font-size:15px; font-weight:700; color:var(--dark); flex:1; }

/* ===== CTA ===== */
.cta-section {
  background: var(--bg);
  color:var(--dark); text-align:center; padding:100px 0;
  position:relative; overflow:hidden;
}
.cta-section::before { content:'';position:absolute;top:-100px;right:-80px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(201,169,110,.08),transparent); }
.cta-section h2 { font-size:clamp(28px,4vw,44px); font-weight:900; margin-bottom:12px; letter-spacing:-1px; }
.cta-section p { font-size:18px; color:var(--text-2); margin-bottom:40px; }
.cta-btn {
  display: inline-block;
  padding: 18px 48px;
  background: var(--accent);
  color: #fff !important;
  font-size: 17px;
  font-weight: 800;
  border-radius: 60px;
  letter-spacing: .5px;
  transition: all var(--transition);
  box-shadow: 0 8px 32px rgba(201,169,110,.3);
}
.cta-btn:hover { background: var(--accent-dark); transform:translateY(-3px); box-shadow:0 16px 48px rgba(201,169,110,.4); }

/* ===== FOOTER ===== */
.footer {
  background: #eef0f4;
  color: var(--text-2);
  font-size: 14px;
}
.footer-main { padding: 80px 0 50px; display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:60px; }
.footer-main .fm-about h4 { font-size:20px; color:var(--dark); font-weight:800; margin-bottom:16px; }
.footer-main .fm-about p { line-height:1.8; font-size:13px; }
.footer-main .fm-col h5 { font-size:15px; font-weight:700; color:var(--dark); margin-bottom:20px; }
.footer-main .fm-col a { display:block; padding:6px 0; color:var(--text-2); font-size:13px; transition:color var(--transition); }
.footer-main .fm-col a:hover { color: var(--primary); padding-left:4px; }
.footer-bottom { border-top:1px solid var(--border); padding:24px 0; text-align:center; }
.footer-bottom a { color:var(--text-3); margin:0 10px; font-size:12px; }
.footer-bottom a:hover { color:var(--primary); }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display:none; position:fixed; bottom:0; left:0; right:0;
  background:rgba(255,255,255,.97); backdrop-filter:blur(20px);
  border-top:1px solid var(--border);
  z-index:100; box-shadow:0 -4px 24px rgba(0,0,0,.08);
  padding:6px 0 env(safe-area-inset-bottom,6px);
}
.mobile-nav-item { flex:1; display:flex; flex-direction:column; align-items:center; gap:3px; padding:6px 4px; color:var(--text-3); font-size:10px; font-weight:600; transition:color var(--transition); }
.mobile-nav-item svg { width:22px; height:22px; }
.mobile-nav-item.active { color:var(--primary); }

/* ===== PAGINATION ===== */
.pagination { display:flex; justify-content:center; gap:8px; padding:48px 0 20px; }
.pagination a, .pagination span { display:inline-flex; align-items:center; justify-content:center; min-width:44px; height:44px; border-radius:10px; font-size:14px; font-weight:600; background:#fff; border:1px solid var(--border); color:var(--text); transition:all var(--transition); }
.pagination a:hover { border-color:var(--primary); color:var(--primary); }
.pagination span.active, .pagination a.active { background:var(--primary); border-color:var(--primary); color:#fff; }

/* ===== BREADCRUMB ===== */
.breadcrumb { padding:16px 0; font-size:13px; color:var(--text-3); }
.breadcrumb a { color:var(--text-2); }
.breadcrumb a:hover { color:var(--primary); }
.breadcrumb span { color:var(--text); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 20px; }
.form-group label { display:block; margin-bottom:6px; font-weight:700; font-size:14px; color:var(--text); }
.form-group input, .form-group select, .form-group textarea {
  width:100%; padding:12px 16px; border:2px solid var(--border);
  border-radius:var(--radius); font-size:15px; outline:none; transition:border-color var(--transition); font-family:inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); }
.form-group textarea { resize:vertical; }
.btn-primary {
  display:inline-block; padding:14px 32px; background:var(--primary); color:#fff; border:none; border-radius:var(--radius); font-size:16px; font-weight:700; cursor:pointer; transition:all var(--transition); letter-spacing:.3px;
}
.btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 24px rgba(139,94,60,.3); }
.alert { padding:14px 20px; border-radius:var(--radius); margin-bottom:20px; font-size:14px; font-weight:600; }
.alert-success { background:var(--primary-light); color:var(--text); border:1px solid var(--border); }
.alert-error { background:#fef2f2; color:#991b1b; border:1px solid #fecaca; }
.empty-state { text-align:center; padding:80px 0; color:var(--text-3); }
.empty-state .icon { font-size:64px; margin-bottom:16px; }
.empty-state p { font-size:17px; }

/* ===== AUTH PAGES ===== */
.auth-page { padding:80px 16px; display:flex; justify-content:center; }
.auth-card { background:#fff; padding:48px; border-radius:var(--radius-xl); box-shadow:var(--shadow-lg); width:440px; max-width:100%; }
.auth-card h2 { text-align:center; margin-bottom:28px; font-size:26px; font-weight:900; }
.auth-link { text-align:center; margin-top:24px; font-size:14px; color:var(--text-3); }

/* ===== MEMBER CENTER ===== */
.member-page {
  display:flex; gap:32px; max-width:1100px; margin:40px auto; padding:0 16px;
}
.member-sidebar {
  width:240px; flex-shrink:0;
}
.user-info {
  background:linear-gradient(135deg,#334155,#475569);
  color:#fff; padding:24px 20px; border-radius:16px; text-align:center; margin-bottom:16px;
}
.user-info .avatar {
  width:56px; height:56px; border-radius:50%; background:rgba(255,255,255,.2);
  display:flex; align-items:center; justify-content:center;
  font-size:24px; font-weight:700; margin:0 auto 10px;
}
.user-info h4 { font-size:17px; font-weight:700; margin:0 0 4px; }
.user-info p { font-size:13px; opacity:.8; margin:0; }
.member-menu {
  background:#fff; border-radius:14px; box-shadow:var(--shadow-sm); overflow:hidden;
}
.member-menu a {
  display:flex; align-items:center; gap:10px; padding:13px 20px; font-size:14px;
  color:var(--dark); text-decoration:none; border-left:3px solid transparent; transition:all .2s;
}
.member-menu a:hover { background:var(--bg); color:var(--primary); }
.member-menu a.active {
  background:#eff6ff; color:var(--primary); font-weight:700; border-left-color:var(--primary);
}
.member-content {
  flex:1; min-width:0;
}
.member-content h2 { font-size:24px; font-weight:800; margin-bottom:20px; color:var(--dark); }

/* status cards row */
.status-cards {
  display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:14px; margin-bottom:20px;
}
.status-card {
  background:#fff; border-radius:14px; padding:20px 24px; box-shadow:var(--shadow-sm);
  text-align:center; border:1px solid var(--border); transition:all .3s;
}
.status-card:hover { transform:translateY(-2px); box-shadow:var(--shadow); }
.status-card h4 { font-size:13px; color:var(--text-3); margin:0 0 6px; font-weight:500; }
.status-card .status-text { font-size:24px; font-weight:800; color:var(--primary); margin:0; }

/* info table inside card */
.info-table { width:100%; border-collapse:collapse; }
.info-table td { padding:10px 0; border-bottom:1px solid var(--bg); font-size:14px; }
.info-table td:first-child { color:var(--text-3); width:80px; }
.info-table tr:last-child td { border-bottom:none; }

/* enterprise verify badge */
.verify-badge {
  display:inline-block; padding:4px 12px; border-radius:20px; font-size:12px; font-weight:600;
}
.verify-badge.approved { background:var(--primary-light); color:var(--accent-dark); }
.verify-badge.pending { background:#fef3c7; color:#d97706; }
.verify-badge.rejected { background:#fef2f2; color:#dc2626; }
.verify-badge.vip { background:var(--primary-light); color:var(--primary); }

@media (max-width:768px) {
  .member-page { flex-direction:column; }
  .member-sidebar { width:100%; }
  .user-info { padding:16px; }
  .status-cards { grid-template-columns:repeat(2,1fr); }
}

/* ===== HOME ARTICLES ===== */
.home-articles { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.home-articles-col { background:#fff; border-radius:var(--radius-lg); padding:32px; box-shadow:var(--shadow); }
.home-articles-col:first-child { border-top:3px solid var(--primary); }
.home-articles-col:last-child { border-top:3px solid var(--accent); }
.home-articles-title { font-size:18px; font-weight:800; color:var(--dark); margin-bottom:20px; display:flex; align-items:center; gap:8px; }
.home-articles-list { list-style:none; padding:0; }
.home-articles-list li { display:flex; justify-content:space-between; align-items:center; padding:12px 0; border-bottom:1px solid var(--bg); gap:12px; }
.home-articles-list li:last-child { border-bottom:none; }
.home-articles-list a { flex:1; font-size:14px; color:var(--text); transition:color var(--transition); }
.home-articles-list a:hover { color:var(--primary); }
.home-articles-list span { color:var(--text-3); font-size:12px; flex-shrink:0; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns:1fr; }
  .footer-main { grid-template-columns:1fr 1fr; gap:40px; }
  .adv-grid { grid-template-columns:repeat(2,1fr); }
  .about-grid { grid-template-columns:1fr; gap:40px; }
  .product-hero .ph-layout { flex-direction:column; }
  .product-hero .ph-img { width:100%; }
  .product-content { grid-template-columns:1fr; }
  .products-sidebar { display:none; }
  .quality-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width: 768px) {
  .top-bar { display:none; }
  .header-inner { height:60px; gap:8px; }
  .logo { flex-shrink:1; min-width:0; gap:4px; }
  .logo svg { width:24px; height:24px; }
  .logo-text { font-size:8px; white-space:nowrap; }
  .logo-img { height: 40px; }
  .logo-name { font-size: 12px; letter-spacing: 0; }
  .header-tel { display:none; }
  .header-actions { gap:6px; flex-shrink:1; }
  .header-actions span[title="搜索"] { display:none !important; }
	  .header-login-btn, .header-register-btn { display:none; }
  .menu-toggle { display:block; flex-shrink:0; margin-right:-16px; }
  .nav-links {
    display:none;
    position:absolute;
    top:60px; left:0; right:0;
    background:#fff;
    flex-direction:column;
    padding:12px 0;
    box-shadow:0 8px 30px rgba(0,0,0,.12);
    z-index:99;
    gap:0;
    border-top:1px solid var(--border);
  }
  .nav-links.show { display:flex; }
  .nav-links a {
    padding:14px 24px;
    border-radius:0;
    border-bottom:1px solid var(--bg);
    font-size:15px;
  }
  .mobile-nav { display:flex; }
  body { padding-bottom:70px; }
  #backToTop { bottom:70px !important; }
  #chatWidget { bottom:120px !important; }
  .container { padding:0 20px; }
  .section { padding:60px 0; }
  .section-header { margin-bottom:36px; }
  .hero { padding:60px 0 80px; }
  .hero h1 { font-size:30px; }
  .card-grid { grid-template-columns:repeat(2,1fr); gap:14px; }
  .card-img { height:180px; }
  .cases-grid { grid-template-columns:repeat(2,1fr); }
  .quality-grid { grid-template-columns:1fr; }
  .footer-main, .cta-section { display:none; }
  .footer-bottom { border-top:none; padding:12px 0; }
  .adv-grid { grid-template-columns:repeat(2,1fr); }
  .adv-item { padding:28px 16px; border-bottom:1px solid var(--border); }
  .adv-item:nth-child(n+3) { border-bottom:none; }
  .about-stats { grid-template-columns:repeat(3,1fr); gap:8px; }
  .about-stats .stat-num { font-size:24px; }
  .product-hero .ph-info { padding:28px 20px; }
  .home-articles { grid-template-columns:1fr; }
  /* 关于我们页面移动端 */
  .about-content .anim-up { padding:24px 20px !important; margin-bottom:20px !important; }
  .about-content .section-header { margin-bottom:20px !important; }
  .about-content .anim-up > div[style*="display:flex"] { flex-direction:column !important; align-items:stretch !important; padding:20px !important; }
  .about-content .anim-up > div[style*="display:flex"] > div:first-child { margin-bottom:12px; }
  /* 招商加盟页面移动端 */
  .franchise-content .anim-up { padding:24px 20px !important; margin-bottom:20px !important; }
  .franchise-content .anim-up .section-header { margin-bottom:20px !important; }
  .franchise-content .anim-up > div[style*="display:grid"],
  .franchise-content .anim-up > div[style*="display:grid"] { grid-template-columns:1fr !important; }
  .franchise-content .anim-up > div[style*="display:flex"][style*="flex-wrap"] > div { flex:1 1 45% !important; min-width:auto !important; }
  .franchise-content .anim-up > div[style*="display:flex"]:not([style*="flex-wrap"]) { flex-direction:column !important; align-items:stretch !important; }
  .franchise-content .anim-fade { padding:32px 20px !important; }
  .franchise-content .anim-fade h2 { font-size:22px !important; }
  /* 联系我们页面移动端 */
  .contact-grid { grid-template-columns:1fr !important; gap:20px !important; }
  .contact-grid > div { padding:32px 24px !important; }
  /* 首页移动端美化 */
  .news-grid { gap:24px; }
  .news-featured img { height:220px; }
  .news-featured .nf-overlay { padding:28px 20px 20px; }
  .cta-section { padding:60px 0; }
  .cta-sub { display:none; }
  .cta-section p { margin-bottom:28px; }
  .cta-btn { padding:16px 36px; }
  .quality-item { padding:28px 16px; }
  .quality-item .q-icon { width:60px; height:60px; margin-bottom:16px; }
  .card-body { padding:16px 18px 18px; }
  .card-badge { top:10px; left:10px; padding:3px 10px; }
}
@media (max-width: 480px) {
  .card-grid { grid-template-columns:1fr; }
  .adv-grid { grid-template-columns:repeat(2,1fr); }
  .cases-grid { grid-template-columns:1fr; }
  .about-stats { grid-template-columns:1fr; }
  /* 首页移动端美化 */
  .news-featured img { height:180px; }
  .news-list-side .nl-item { padding:14px; }
  .about-img { max-height:280px; overflow:hidden; }
  .about-img img { width:100%; object-fit:cover; }
  .cta-section { padding:50px 0; }
  .quality-item { padding:24px 12px; }
  .quality-item .q-icon { width:52px; height:52px; }
  .card-img { height:200px; }
  .card-body { padding:14px 16px 16px; }
  .footer-main { padding:32px 0 20px; }
  .footer-main .fm-col a { margin:0 8px; }
}

/* ============================================================
   ANIMATION SYSTEM
   ============================================================ */

/* === 基础入场动画 === */
.anim-up {
  opacity: 0; transform: translateY(40px);
  transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1);
}
.anim-up.show { opacity: 1; transform: translateY(0); }

.anim-left {
  opacity: 0; transform: translateX(-40px);
  transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1);
}
.anim-left.show { opacity: 1; transform: translateX(0); }

.anim-right {
  opacity: 0; transform: translateX(40px);
  transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1);
}
.anim-right.show { opacity: 1; transform: translateX(0); }

.anim-fade {
  opacity: 0;
  transition: opacity .8s ease;
}
.anim-fade.show { opacity: 1; }

.anim-scale {
  opacity: 0; transform: scale(.9);
  transition: opacity .6s ease, transform .6s cubic-bezier(.22,.61,.36,1);
}
.anim-scale.show { opacity: 1; transform: scale(1); }

.anim-zoom {
  opacity: 0; transform: scale(1.08);
  transition: opacity .8s ease, transform .8s cubic-bezier(.22,.61,.36,1);
}
.anim-zoom.show { opacity: 1; transform: scale(1); }

/* 延迟工具 */
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
.delay-5 { transition-delay: .5s; }
.delay-6 { transition-delay: .6s; }

/* === 悬停动画 === */
.card, .adv-item, .case-item, .about-stats .stat-card,
.quality-item, .nl-item, .af-item, .apt-item {
  transition: transform .35s cubic-bezier(.22,.61,.36,1), box-shadow .35s ease, border-color .35s ease, background .35s ease;
}

/* 按钮涟漪效果 */
.btn-primary, .cta-btn, .slider-btn {
  position: relative; overflow: hidden;
}
.btn-primary::after, .cta-btn::after, .slider-btn::after {
  content: ''; position: absolute;
  top: 50%; left: 50%; width: 0; height: 0;
  border-radius: 50%; background: rgba(255,255,255,.2);
  transform: translate(-50%,-50%); transition: width .6s, height .6s;
}
.btn-primary:active::after, .cta-btn:active::after, .slider-btn:active::after {
  width: 400px; height: 400px;
}

/* 导航链接动画 */
.nav-links a {
  transition: color .2s, background .2s, transform .2s;
}
.nav-links a:hover { transform: translateY(-1px); }

/* Logo悬停 */
.logo { transition: transform .3s; }
.logo:hover { transform: scale(1.03); }

/* 图片悬停缩放 */
.card-img img, .case-item img, .rxcp-item .imgarea img {
  transition: transform .6s cubic-bezier(.22,.61,.36,1);
}

/* 页脚链接动画 */
.footer-main a {
  transition: color .2s, padding-left .3s;
}

/* 进度条装饰 */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 脉冲 */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* 浮动 */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* 打字光标 */
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* === 滚动驱动动画（无JS也能用） === */
@keyframes reveal {
  from { opacity:0; clip-path:inset(0 0 100% 0); }
  to { opacity:1; clip-path:inset(0 0 0 0); }
}

/* === 减少动画偏好 === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ===== MALL ANIMATIONS ===== */
/* 商品卡片入场 */
@keyframes cardIn {
  from { opacity:0; transform:translateY(24px); }
  to   { opacity:1; transform:translateY(0); }
}
.card-grid .card {
  animation: cardIn 1.2s ease backwards;
}
.card-grid .card:nth-child(1)  { animation-delay: .15s; }
.card-grid .card:nth-child(2)  { animation-delay: .45s; }
.card-grid .card:nth-child(3)  { animation-delay: .45s; }
.card-grid .card:nth-child(4)  { animation-delay: 1.05s; }
.card-grid .card:nth-child(5)  { animation-delay: .75s; }
.card-grid .card:nth-child(6)  { animation-delay: .9s; }
.card-grid .card:nth-child(n+7) { animation-delay: 1.05s; }

/* 购物车商品滑入 */
@keyframes slideIn {
  from { opacity:0; transform:translateX(-16px); }
  to   { opacity:1; transform:translateX(0); }
}
/* 支付按钮脉冲 */
@keyframes pulse {
  0%,100% { box-shadow:0 0 0 0 rgba(212,168,83,.4); }
  50%     { box-shadow:0 0 0 10px rgba(212,168,83,0); }
}
.btn-pulse {
  animation: pulse 2s infinite;
}

/* 数量变化反馈 */
@keyframes popIn {
  0%   { transform:scale(1); }
  50%  { transform:scale(1.15); }
  100% { transform:scale(1); }
}

/* 页面内容渐显 */
@keyframes pageIn {
  from { opacity:0; }
  to   { opacity:1; }
}
.page-hero {
  animation: pageIn 1.5s ease;
}

/* 卡片悬停增强 */
.card {
  transition: transform .8s cubic-bezier(.22,.61,.36,1), box-shadow .35s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
}

/* 按钮悬停 */
.btn-primary {
  transition: all .6s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,31,46,.35);
}

/* 输入框聚焦 */
input:focus, textarea:focus, select:focus {
  transition: border-color .2s ease, box-shadow .2s ease;
  box-shadow: 0 0 0 3px rgba(26,31,46,.12);
}

/* 文章列表入场动画 */
@keyframes articleIn {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}
.article-item {
  animation: articleIn 1.2s ease backwards;
}
.article-item:nth-child(1)  { animation-delay: .15s; }
.article-item:nth-child(2)  { animation-delay: .45s; }
.article-item:nth-child(3)  { animation-delay: .45s; }
.article-item:nth-child(4)  { animation-delay: .9s; }
.article-item:nth-child(5)  { animation-delay: .75s; }
.article-item:nth-child(6)  { animation-delay: .9s; }
.article-item:nth-child(n+7) { animation-delay: 1.05s; }