/*
Theme Name: 新岩科技主题
Theme URI: https://xinyanai.com
Author: 新岩人工智能科技（杭州）有限公司
Author URI: https://xinyanai.com
Description: 新岩科技 AI 教育与智能解决方案官网主题
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: xinyan
Tags: ai, education, technology, blue
*/

/* =============================================
   CSS 变量 & 全局重置
   ============================================= */
:root {
  --primary: #1a56db;
  --primary-dark: #1240a8;
  --primary-light: #e8f0fe;
  --accent: #2563eb;
  --text-dark: #1e293b;
  --text-mid: #475569;
  --text-light: #94a3b8;
  --bg-white: #ffffff;
  --bg-light: #f0f5ff;
  --bg-section: #f8fafc;
  --border: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(26,86,219,0.08);
  --shadow-md: 0 8px 32px rgba(26,86,219,0.12);
  --shadow-lg: 0 16px 48px rgba(26,86,219,0.16);
  --radius: 12px;
  --radius-lg: 20px;
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-cn);
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* =============================================
   通用组件
   ============================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--text-mid);
  max-width: 560px;
  margin: 0 auto;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(26,86,219,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
}
.btn-white:hover {
  background: var(--primary-light);
}
.btn-white-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-white-outline:hover {
  background: rgba(255,255,255,0.15);
}

/* 特性列表 */
.feature-list { display: flex; flex-direction: column; gap: 10px; margin: 20px 0 28px; }
.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-mid);
}
.feature-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='10' cy='10' r='10' fill='%231a56db' fill-opacity='0.12'/%3E%3Cpath d='M6 10l3 3 5-5' stroke='%231a56db' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
  flex-shrink: 0;
}

/* 卡片 */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* 交替布局区块 */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 64px 0;
}
.split-section.reverse { direction: rtl; }
.split-section.reverse > * { direction: ltr; }
.split-content h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-dark);
}
.split-content p {
  color: var(--text-mid);
  margin-bottom: 8px;
  line-height: 1.8;
}
.split-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.split-image img { width: 100%; height: 280px; object-fit: cover; }

/* =============================================
   导航栏
   ============================================= */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(26,86,219,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-logo img { height: 48px; width: auto; }
.site-logo .logo-text { font-size: 1rem; font-weight: 700; color: var(--primary); }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-mid);
  transition: var(--transition);
  position: relative;
}
.main-nav a:hover,
.main-nav a.current-menu-item {
  color: var(--primary);
  background: var(--primary-light);
}
.main-nav a.current-menu-item::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-login {
  background: var(--primary);
  color: #fff;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
}
.btn-login:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(26,86,219,0.3);
}

/* 移动端汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  border: none;
  background: none;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   页面 Hero 横幅
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, #eef4ff 0%, #f0f5ff 50%, #e8f0fe 100%);
  padding: 72px 0 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(26,86,219,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  position: relative; z-index: 1;
}
.page-hero p {
  font-size: 1.05rem;
  color: var(--text-mid);
  max-width: 600px;
  margin: 0 auto;
  position: relative; z-index: 1;
}

/* =============================================
   页脚
   ============================================= */
#site-footer {
  background: #0f1929;
  color: rgba(255,255,255,0.75);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-brand .logo-wrap img { width: 120px; filter: brightness(2); }
.footer-brand .brand-name { color: #fff; font-weight: 700; font-size: 1rem; }
.footer-brand .brand-sub { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.footer-brand .brand-desc { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.8; }

.footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer-col ul li a:hover { color: #fff; }

.footer-contact-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
.footer-contact-item { font-size: 0.83rem; color: rgba(255,255,255,0.55); margin-bottom: 8px; }

.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

/* =============================================
   首页专属样式
   ============================================= */
.hero-full {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0c1f4a 0%, #0d2560 40%, #0f3080 100%);
  position: relative;
  overflow: hidden;
}
.hero-full::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Ccircle cx='30' cy='30' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; position: relative; z-index: 1; }
.hero-content h1 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 20px;
}
.hero-content h1 em { font-style: normal; color: #60a5fa; }
.hero-content p { color: rgba(255,255,255,0.75); font-size: 1rem; margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual img { width: 100%; border-radius: var(--radius-lg); box-shadow: 0 24px 64px rgba(0,0,0,0.3); }

/* 公司概览 */
.overview-section { background: var(--bg-white); }
.overview-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 80px; align-items: center; }
.overview-content h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 16px; }
.overview-content p { color: var(--text-mid); margin-bottom: 16px; line-height: 1.9; }
.stats-row { display: flex; gap: 40px; margin-top: 28px; }
.stat-item { text-align: center; }
.stat-num { font-size: 2.2rem; font-weight: 800; color: var(--primary); line-height: 1; }
.stat-num span { font-size: 1.2rem; }
.stat-label { font-size: 0.82rem; color: var(--text-light); margin-top: 4px; }

/* 愿景使命 */
.mission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.mission-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid rgba(26,86,219,0.1);
}
.mission-card .icon { font-size: 2rem; margin-bottom: 14px; }
.mission-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--primary); }
.mission-card p { font-size: 0.9rem; color: var(--text-mid); line-height: 1.8; }

/* 产品矩阵 */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card img { width: 100%; height: 200px; object-fit: cover; }
.product-card-body { padding: 24px; }
.product-card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.product-card-body p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.7; }

/* 核心优势 */
.advantages-section { background: var(--bg-light); }
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.advantage-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.advantage-icon {
  width: 64px; height: 64px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.8rem;
}
.advantage-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.advantage-card p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.7; }

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #0d2560 100%);
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(255,255,255,0.06) 0%, transparent 70%);
}
.cta-banner h2 { color: #fff; font-size: 2rem; font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-banner p { color: rgba(255,255,255,0.8); margin-bottom: 32px; position: relative; }
.cta-actions { display: flex; gap: 16px; justify-content: center; position: relative; }

/* 合作伙伴 */
.partners-section { background: var(--bg-section); }
.partners-logos { display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; align-items: center; }
.partner-logo {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 28px;
  display: flex; align-items: center; justify-content: center;
  min-width: 140px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.partner-logo:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.partner-logo img { height: 36px; width: auto; object-fit: contain; filter: grayscale(0.3); }
.partner-logo span { font-size: 0.85rem; font-weight: 600; color: var(--text-mid); }

/* =============================================
   AI助学页
   ============================================= */
.ai-hero { background: linear-gradient(135deg, #0c1f4a 0%, #1a3a8c 100%); }
.ai-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-feature-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid rgba(26,86,219,0.1);
  transition: var(--transition);
}
.ai-feature-card:hover { background: #fff; box-shadow: var(--shadow-md); transform: translateY(-4px); }
.ai-feature-card .feat-icon {
  width: 52px; height: 52px;
  background: var(--primary);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 16px;
}
.ai-feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.ai-feature-card p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.7; }

/* =============================================
   解决方案页
   ============================================= */
.solutions-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}
.solution-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.solution-card img { width: 100%; height: 200px; object-fit: cover; }
.solution-card-body { padding: 24px; }
.solution-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 0.78rem; font-weight: 600; padding: 3px 10px; border-radius: 20px; margin-bottom: 10px; }
.solution-card-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.solution-card-body p { font-size: 0.85rem; color: var(--text-mid); }

/* =============================================
   案例页
   ============================================= */
.case-block { background: var(--bg-white); border-radius: var(--radius-lg); margin-bottom: 32px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); overflow: hidden; }

/* =============================================
   关于赛事页
   ============================================= */
.competition-hero-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #0d2560 100%);
  padding: 48px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: 48px;
}
.competition-hero-banner h2 { color: #fff; font-size: 1.6rem; font-weight: 700; margin-bottom: 10px; }
.competition-hero-banner p { color: rgba(255,255,255,0.8); margin-bottom: 28px; }
.cta-banner-actions { display: flex; gap: 16px; justify-content: center; }

/* =============================================
   关于我们页
   ============================================= */
.about-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.certificates-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.cert-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.cert-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: 8px; margin-bottom: 10px; }
.cert-card p { font-size: 0.8rem; color: var(--text-mid); font-weight: 500; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.contact-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid rgba(26,86,219,0.1);
  transition: var(--transition);
}
.contact-card:hover { background: #fff; box-shadow: var(--shadow-md); transform: translateY(-3px); }
.contact-card .cc-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto 14px;
}
.contact-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.contact-card p { font-size: 0.85rem; color: var(--text-mid); }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .hero-grid, .overview-grid, .about-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .products-grid, .advantages-grid, .solutions-cards, .ai-features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .certificates-grid { grid-template-columns: repeat(3, 1fr); }
}
.col3_fix{
  display:grid; grid-template-columns:repeat(3,1fr); gap:24px;
}
.col2_fix{
  display:grid;grid-template-columns: 1fr  1fr; gap:24px; 
}

@media (max-width: 768px) {
  .main-nav, .header-actions .btn-login { display: none; }
  .menu-toggle { display: flex; }
  .split-section { grid-template-columns: 1fr; gap: 32px; }
  .split-section.reverse { direction: ltr; }
  .products-grid, .advantages-grid, .solutions-cards, .ai-features-grid, .mission-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .certificates-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { gap: 24px; }
  .cta-actions, .hero-actions, .cta-banner-actions { flex-direction: column; align-items: center; }
.nav_login{
display:none;
}
.col3_fix{
  display:grid;grid-template-columns: repeat(1,1fr);gap:12px;
}
.col2_fix{
  display:grid;grid-template-columns: 1fr; gap:12px; margin-bottom: 30xp;
}
.hero-content{
  padding: 15px;
}
}


.tabs-nav{
  color: #333;
}