/* ============================================================
   鲲鹏聚 AI 智能 GEO 优化平台 — 主题样式
   配色:深蓝紫渐变 (#1e3a8a → #7c3aed) + AI 青色亮点 (#06b6d4)
   ============================================================ */

:root {
  --kp-bg: #0b1120;
  --kp-bg-2: #111827;
  --kp-primary: #1e3a8a;
  --kp-primary-light: #3b82f6;
  --kp-accent: #7c3aed;
  --kp-accent-light: #a78bfa;
  --kp-cyan: #06b6d4;
  --kp-text: #e2e8f0;
  --kp-text-muted: #94a3b8;
  --kp-border: rgba(148, 163, 184, 0.12);
  --kp-card-bg: rgba(255, 255, 255, 0.04);
  --kp-card-border: rgba(124, 58, 237, 0.25);
}

html, body { background: var(--kp-bg); color: var(--kp-text); }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; }

/* ---------- 通用覆盖 ---------- */
.bg-white { background: var(--kp-bg-2) !important; }
.bg-light { background: var(--kp-bg) !important; }
.text-secondary { color: var(--kp-text-muted) !important; }
.text-dark { color: var(--kp-text) !important; }
.text-success { color: var(--kp-cyan) !important; }
.border-top, .border-bottom, .border-right { border-color: var(--kp-border) !important; }

/* ---------- 顶部导航 ---------- */
.navbar.kp-nav {
  background: rgba(11, 17, 32, 0.85) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--kp-border);
}
.navbar.kp-nav .navbar-brand { font-weight: 700; letter-spacing: 1px; }
.navbar.kp-nav .navbar-brand .kp-brand-text {
  background: linear-gradient(135deg, var(--kp-cyan), var(--kp-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.4rem;
  margin-left: 8px;
}
.navbar.kp-nav .nav-link { color: var(--kp-text) !important; font-weight: 500; }
.navbar.kp-nav .nav-link:hover { color: var(--kp-cyan) !important; }
.navbar.kp-nav .nav-item.active .nav-link { color: var(--kp-cyan) !important; }
.navbar.kp-nav .navbar-text a { color: var(--kp-text-muted) !important; }

/* ---------- Hero 鲲鹏 AI ---------- */
.kp-hero {
  position: relative;
  min-height: 78vh;
  background:
    radial-gradient(ellipse 80% 60% at 20% 20%, rgba(124, 58, 237, 0.45), transparent 60%),
    radial-gradient(ellipse 70% 60% at 80% 70%, rgba(6, 182, 212, 0.35), transparent 60%),
    linear-gradient(135deg, #0b1120 0%, #1e1b4b 50%, #0b1120 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
}
.kp-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}
.kp-hero .container { position: relative; z-index: 2; }
.kp-hero h1.kp-hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff 0%, var(--kp-cyan) 50%, var(--kp-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.kp-hero .kp-hero-sub {
  font-size: 1.25rem;
  color: var(--kp-text-muted);
  max-width: 720px;
  margin-bottom: 2rem;
}
.kp-hero .kp-hero-cta .btn { padding: 0.75rem 2rem; font-weight: 600; }
.kp-hero .kp-pill {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid rgba(6, 182, 212, 0.4);
  background: rgba(6, 182, 212, 0.08);
  color: var(--kp-cyan);
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}
.kp-hero .kp-stat {
  text-align: center;
  padding: 1rem;
}
.kp-hero .kp-stat .num {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--kp-cyan), var(--kp-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.kp-hero .kp-stat .lbl { color: var(--kp-text-muted); font-size: 0.9rem; }

.kp-hero-orbit {
  position: relative;
  width: 360px; height: 360px;
  margin: 0 auto;
}
.kp-hero-orbit .core {
  position: absolute; inset: 0;
  margin: auto;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--kp-primary), var(--kp-accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: white; font-size: 1.1rem;
  box-shadow: 0 0 80px rgba(124, 58, 237, 0.6);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.kp-hero-orbit .ring {
  position: absolute; inset: 0;
  border: 1px dashed rgba(148, 163, 184, 0.25);
  border-radius: 50%;
  animation: kp-spin 30s linear infinite;
}
.kp-hero-orbit .ring.r2 { inset: 40px; animation-duration: 22s; animation-direction: reverse; }
.kp-hero-orbit .ring.r3 { inset: 90px; animation-duration: 16s; }
.kp-hero-orbit .node {
  position: absolute;
  width: 50px; height: 50px;
  border-radius: 12px;
  background: var(--kp-card-bg);
  border: 1px solid var(--kp-card-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--kp-cyan);
  font-size: 1.1rem;
  backdrop-filter: blur(8px);
}
.kp-hero-orbit .node.n1 { top: 10%; left: 50%; transform: translateX(-50%); }
.kp-hero-orbit .node.n2 { top: 50%; right: 0; transform: translateY(-50%); }
.kp-hero-orbit .node.n3 { bottom: 10%; left: 50%; transform: translateX(-50%); }
.kp-hero-orbit .node.n4 { top: 50%; left: 0; transform: translateY(-50%); }
.kp-hero-orbit .node.n5 { top: 22%; right: 8%; }
.kp-hero-orbit .node.n6 { bottom: 22%; right: 8%; }
.kp-hero-orbit .node.n7 { top: 22%; left: 8%; }
.kp-hero-orbit .node.n8 { bottom: 22%; left: 8%; }

@keyframes kp-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ---------- 板块标题 ---------- */
.kp-section { padding: 5rem 0; position: relative; }
.kp-section.kp-section-dark { background: linear-gradient(180deg, var(--kp-bg) 0%, var(--kp-bg-2) 100%); }
.kp-section.kp-section-dark-rev { background: linear-gradient(180deg, var(--kp-bg-2) 0%, var(--kp-bg) 100%); }
.kp-section .kp-section-title {
  text-align: center;
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #ffffff 0%, var(--kp-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.kp-section .kp-section-sub {
  text-align: center;
  color: var(--kp-text-muted);
  margin-bottom: 3rem;
  letter-spacing: 1px;
}

/* ---------- 能力卡片 ---------- */
.kp-feature {
  background: var(--kp-card-bg);
  border: 1px solid var(--kp-border);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  height: 100%;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}
.kp-feature:hover {
  border-color: var(--kp-cyan);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(6, 182, 212, 0.15);
}
.kp-feature .icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--kp-primary), var(--kp-accent));
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.6rem;
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3);
}
.kp-feature h4 { color: #fff; font-weight: 700; margin-bottom: 0.75rem; }
.kp-feature p { color: var(--kp-text-muted); line-height: 1.7; font-size: 0.95rem; margin: 0; }

/* ---------- 产品卡片 ---------- */
.kp-card {
  background: var(--kp-card-bg);
  border: 1px solid var(--kp-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
}
.kp-card:hover {
  border-color: var(--kp-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(124, 58, 237, 0.2);
}
.kp-card .card-img-top { border-bottom: 1px solid var(--kp-border); }
.kp-card .card-body { padding: 1.25rem !important; }
.kp-card .card-title { font-size: 1rem !important; margin-bottom: 0 !important; }
.kp-card .card-title a { color: #fff !important; font-weight: 600; }
.kp-card .card-title a:hover { color: var(--kp-cyan) !important; }
.kp-card .kp-card-media { display: block; overflow: hidden; }
.kp-card .kp-img-product { width: 100%; height: 200px; object-fit: cover; }
.kp-card .kp-img-case { width: 100%; height: 220px; object-fit: cover; }

/* ---------- 行业资讯 ---------- */
.kp-news-item {
  display: flex;
  padding: 1.25rem;
  border: 1px solid var(--kp-border);
  border-radius: 12px;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  background: var(--kp-card-bg);
}
.kp-news-item:hover {
  border-color: var(--kp-cyan);
  background: rgba(6, 182, 212, 0.05);
  transform: translateX(6px);
}
.kp-news-item .date-block {
  min-width: 110px;
  text-align: center;
  padding-right: 1.25rem;
  border-right: 1px solid var(--kp-border);
  margin-right: 1.25rem;
  display: flex; align-items: center; justify-content: center;
}
.kp-news-item .date-block .day {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--kp-cyan);
  letter-spacing: 1px;
  line-height: 1.2;
}
.kp-news-item .date-block .ym { color: var(--kp-text-muted); font-size: 0.85rem; margin-top: 4px; }
.kp-news-item .news-body a { color: #fff; font-weight: 600; font-size: 1.05rem; text-decoration: none; }
.kp-news-item .news-body a:hover { color: var(--kp-cyan); }
.kp-news-item .news-body p { color: var(--kp-text-muted); font-size: 0.9rem; margin: 0.5rem 0 0; line-height: 1.6; }

/* ---------- CTA 鲲鹏 AI ---------- */
.kp-cta {
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(124, 58, 237, 0.5), transparent 70%),
    linear-gradient(135deg, #1e1b4b 0%, #0b1120 100%);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.kp-cta h2 {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff, var(--kp-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.kp-cta p { color: var(--kp-text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }
.kp-cta .kp-cta-buttons .btn { padding: 0.85rem 2.5rem; font-weight: 600; margin: 0 0.5rem; }
.kp-contact-row {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--kp-border);
  display: flex; flex-wrap: wrap; justify-content: center; gap: 3rem;
}
.kp-contact-row .item i {
  font-size: 1.6rem;
  color: var(--kp-cyan);
  margin-bottom: 0.5rem;
}
.kp-contact-row .item .lbl { color: var(--kp-text-muted); font-size: 0.85rem; margin: 0; }
.kp-contact-row .item .val { color: #fff; font-weight: 600; margin: 0.25rem 0 0; }

/* ---------- 按钮 ---------- */
.btn-kp-primary {
  background: linear-gradient(135deg, var(--kp-cyan), var(--kp-accent));
  border: none;
  color: #fff;
  border-radius: 999px;
  transition: all 0.3s ease;
}
.btn-kp-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.4);
  color: #fff;
}
.btn-kp-outline {
  background: transparent;
  border: 1px solid var(--kp-cyan);
  color: var(--kp-cyan);
  border-radius: 999px;
  transition: all 0.3s ease;
}
.btn-kp-outline:hover {
  background: rgba(6, 182, 212, 0.1);
  color: var(--kp-cyan);
  transform: translateY(-2px);
}
.btn-success, .btn-outline-success {
  background: linear-gradient(135deg, var(--kp-cyan), var(--kp-accent)) !important;
  border: none !important;
  color: #fff !important;
  border-radius: 999px !important;
  padding: 0.6rem 1.5rem !important;
}
.btn-outline-success {
  background: transparent !important;
  border: 1px solid var(--kp-cyan) !important;
  color: var(--kp-cyan) !important;
}
.btn-outline-success:hover { background: rgba(6, 182, 212, 0.1) !important; color: var(--kp-cyan) !important; }

/* ---------- 页脚 ---------- */
.footer.kp-footer {
  background: #050a14;
  border-top: 1px solid var(--kp-border);
  color: var(--kp-text-muted);
}
.footer.kp-footer h5 {
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, var(--kp-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer.kp-footer a { color: var(--kp-text-muted) !important; text-decoration: none; }
.footer.kp-footer a:hover { color: var(--kp-cyan) !important; }
.footer.kp-footer .copyright {
  color: var(--kp-text-muted);
  background: transparent;
}

/* ---------- 在线客服隐藏 ---------- */
.online { display: none !important; }

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .kp-hero { min-height: 60vh; padding: 4rem 0; }
  .kp-hero h1.kp-hero-title { font-size: 2rem; }
  .kp-hero .kp-hero-orbit { width: 240px; height: 240px; margin-top: 2rem; }
  .kp-hero-orbit .node { width: 36px; height: 36px; font-size: 0.85rem; }
  .kp-section { padding: 3rem 0; }
  .kp-section .kp-section-title { font-size: 1.5rem; }
  .kp-cta h2 { font-size: 1.6rem; }
  .kp-news-item { flex-direction: column; }
  .kp-news-item .date-block {
    border-right: none; border-bottom: 1px solid var(--kp-border);
    margin-right: 0; margin-bottom: 0.75rem; padding-right: 0; padding-bottom: 0.5rem;
    display: flex; align-items: center; gap: 0.5rem; justify-content: flex-start;
    min-width: auto;
  }
  .kp-news-item .date-block .day { font-size: 1rem; }
  /* 移动端给 footer 留出底部固定导航的高度,避免最后一行被遮挡 */
  .footer.kp-footer { padding-bottom: 70px; }
}

/* 兼容 PbootCMS 老 aoyun 类的部分覆盖 */
.head-sm-height { background: var(--kp-bg); }

/* ============================================================
   占位图系统 — 无图片时自动回退到 SVG/CSS 占位
   使用方式: <img class="kp-placeholder" data-text="AI" onerror="...">
   ============================================================ */

/* Logo 占位 — 导航栏小尺寸 */
img.kp-logo-fallback {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--kp-cyan), var(--kp-accent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: -0.5px;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
  position: relative;
  overflow: hidden;
}
img.kp-logo-fallback::before {
  content: "鲲";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
}
img.kp-logo-fallback::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.18) 50%, transparent 70%);
  background-size: 200% 200%;
  animation: kp-shine 4s linear infinite;
}
@keyframes kp-shine {
  from { background-position: 200% 200%; }
  to { background-position: -200% -200%; }
}

/* 通用占位图(产品缩略图 / 案例配图)— 在 <img> 加载失败时由 onerror 切换 */
.kp-ph {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 50%, #06b6d4 100%);
  color: rgba(255, 255, 255, 0.85);
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
}
.kp-ph::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(6,182,212,0.4), transparent 50%);
}
.kp-ph::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.kp-ph .ph-text {
  position: relative; z-index: 2;
  font-size: 1.25rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.kp-ph .ph-icon {
  position: relative; z-index: 2;
  font-size: 3rem;
  margin-bottom: 0.5rem;
  opacity: 0.85;
}

/* 产品/案例卡片 — 图片区高度(给 <img> 和 <div class="kp-ph"> 通用) */
.kp-card .card-img-top,
.kp-card .kp-ph {
  width: 100%;
  height: 200px;
  border-bottom: 1px solid var(--kp-border);
}
.kp-card .card-img-top.kp-ph-tall,
.kp-card .kp-ph.kp-ph-tall { height: 220px; }

/* 缩略图场景不同大小 */
.kp-ph.kp-ph-sm { height: 140px; }
.kp-ph.kp-ph-md { height: 180px; }
.kp-ph.kp-ph-lg { height: 240px; }
.kp-ph.kp-ph-xl { height: 360px; }
.kp-ph.kp-ph-sm .ph-text { font-size: 0.95rem; }
.kp-ph.kp-ph-md .ph-text { font-size: 1.1rem; }
.kp-ph.kp-ph-lg .ph-text { font-size: 1.5rem; }
.kp-ph.kp-ph-xl .ph-text { font-size: 2rem; }

/* 没有占位需求但想隐藏破图 — 后端无 ico 时 */
img[src=""], img[src="/"], img:not([src]) {
  display: none;
}

/* favicon 缺失时浏览器不会请求(因 link 已声明),无需处理 */