/* 天敬星教育官网 toC — 设计系统（配色沿用集团招商站 tjx80.com） */
:root{
  --blue:#0A2D69; --blue-dark:#071F49; --blue-mid:#12408F; --blue-light:#E9EEF8;
  --gold:#D4AF37; --gold-light:#F7EED3; --tech:#008CDC; --orange:#E66414; --orange-hover:#C95410;
  --green:#1EA050; --text:#1f2937; --text-light:#6b7280; --bg:#ffffff; --bg-gray:#f8fafc;
  --border:#e5e7eb; --radius:12px; --shadow:0 4px 24px rgba(7,31,73,.10); --max-w:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}
.text-center{text-align:center}
.mt-24{margin-top:24px}.mb-24{margin-bottom:24px}

/* 导航 */
.site-nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:800;color:var(--blue)}
.nav-logo span{color:var(--orange)}
.logo-img{width:40px;height:40px;border-radius:8px;object-fit:cover}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 10px;border-radius:8px;font-size:.95rem;color:var(--text);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue-mid);background:var(--blue-light)}
.nav-phone{display:flex;align-items:center;gap:6px;background:var(--orange);color:#fff!important;padding:8px 14px;border-radius:999px;font-weight:700}
.nav-phone:hover{background:var(--orange-hover)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--blue)}
.nav-toggle svg{width:26px;height:26px}

/* 公告条 */
.announce-bar{background:var(--gold-light);color:#7a5c10;text-align:center;padding:8px 16px;font-size:.9rem}

/* Hero */
.hero{background:linear-gradient(120deg,rgba(7,31,73,.92),rgba(10,45,105,.78)),url("../assets/hero-bg.jpg") center/cover no-repeat;color:#fff;padding:96px 0;text-align:center}
.hero h1{font-size:3rem;font-weight:900;letter-spacing:2px}
.hero .slogan{margin-top:12px;font-size:1.25rem;color:var(--gold-light)}
.hero .promise{margin:20px auto 0;display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(212,175,55,.5);border-radius:999px;padding:10px 24px;font-size:1.05rem}
.hero .trust{margin-top:16px;font-size:.85rem;color:rgba(255,255,255,.75)}
.hero-ctas{margin-top:32px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* 按钮 */
.btn{display:inline-block;padding:13px 30px;border-radius:999px;font-size:1rem;font-weight:700;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-hover);transform:translateY(-2px)}
.btn-outline{border:2px solid rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-blue{background:var(--blue-mid);color:#fff}
.btn-blue:hover{background:var(--blue)}
.btn-gold{background:var(--gold);color:var(--blue-dark)}
.btn-gold:hover{filter:brightness(1.08)}
.btn-sm{padding:8px 18px;font-size:.9rem}

/* 区块 */
.section{padding:72px 0}
.section-gray{background:var(--bg-gray)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2.1rem;font-weight:800;color:var(--blue)}
.section-title .accent{color:var(--orange)}
.section-title p{margin-top:10px;color:var(--text-light);font-size:1.05rem}

/* 数据条 */
.stats-row{display:flex;justify-content:center;gap:56px;flex-wrap:wrap}
.stat-item{text-align:center}
.stat-num{font-size:2.4rem;font-weight:900;color:var(--blue-mid)}
.stat-label{color:var(--text-light);font-size:.95rem}

/* 卡片 */
.card-grid{display:grid;gap:24px}
.card-grid-2{grid-template-columns:repeat(2,1fr)}
.card-grid-3{grid-template-columns:repeat(3,1fr)}
.card-grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 32px rgba(7,31,73,.16)}
.card h3{color:var(--blue);font-size:1.15rem;margin-bottom:10px}
.card p{color:var(--text-light);font-size:.95rem}
.card-icon{width:52px;height:52px;border-radius:12px;background:var(--blue-light);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card-icon svg{width:26px;height:26px;stroke:var(--blue-mid);fill:none;stroke-width:2}
.tech-card{display:flex;gap:16px;align-items:flex-start}
.tech-num{font-size:1.6rem;font-weight:900;color:var(--gold);line-height:1.2}
.img-rounded{border-radius:var(--radius);box-shadow:var(--shadow)}

/* 价格卡 */
.price-card{text-align:center;position:relative}
.price-card .badge{position:absolute;top:16px;left:16px;background:var(--blue-light);color:var(--blue-mid);font-weight:700;font-size:.85rem;padding:4px 12px;border-radius:999px}
.price-card.featured{border:2px solid var(--gold)}
.price-card.featured .badge{background:var(--gold-light);color:#7a5c10}
.price-tag{font-size:2.2rem;font-weight:900;color:var(--orange);margin:8px 0 2px}
.price-unit{color:var(--text-light);font-size:.9rem;margin-bottom:8px}

/* 商城 */
.shop-tabs{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:32px}
.shop-tab{padding:8px 20px;border-radius:999px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:.95rem;color:var(--text)}
.shop-tab.active{background:var(--blue-mid);color:#fff;border-color:var(--blue-mid)}
.product-card{text-align:center;display:flex;flex-direction:column}
.product-thumb{height:150px;border-radius:10px;background:linear-gradient(135deg,var(--blue-light),var(--gold-light));display:flex;align-items:center;justify-content:center;font-size:3rem;margin-bottom:16px}
.product-card .price-tag{font-size:1.5rem}
.product-card .btn{margin-top:auto;align-self:center}
.coupon-card{background:linear-gradient(120deg,var(--blue),var(--blue-mid));color:#fff;border:none;display:flex;align-items:center;justify-content:space-between;gap:16px}
.coupon-val{font-size:2rem;font-weight:900;color:var(--gold)}
.coupon-card p{color:rgba(255,255,255,.85)}

/* 案例 */
.score{font-size:1.5rem;font-weight:800;color:var(--orange);margin:6px 0}
.case-img{border-radius:10px;margin-bottom:14px;height:200px;object-fit:cover;width:100%}

/* FAQ */
.faq-item{border:1px solid var(--border);border-radius:var(--radius);background:#fff;margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 22px;cursor:pointer;font-weight:700;color:var(--blue);display:flex;justify-content:space-between;align-items:center}
.faq-q .arrow{transition:.25s;color:var(--text-light)}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px}
.faq-item.open .faq-a{max-height:300px;padding:0 22px 18px}
.faq-a p{color:var(--text-light);font-size:.95rem}

/* 表单 */
.form-section{background:linear-gradient(120deg,var(--blue-dark),var(--blue-mid));color:#fff;padding:72px 0}
.form-section .section-title h2{color:#fff}
.form-section .section-title p{color:rgba(255,255,255,.75)}
.lead-form{max-width:720px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lead-form input,.lead-form select,.lead-form textarea{padding:14px 16px;border-radius:10px;border:none;font-size:1rem;font-family:inherit;background:#fff;color:var(--text)}
.lead-form .full{grid-column:1/-1}
.lead-form textarea{resize:vertical;min-height:96px}
.lead-form button{grid-column:1/-1}
.form-msg{text-align:center;margin-top:16px;font-size:.95rem;min-height:24px;color:var(--gold-light)}

/* 资讯 */
.news-item{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;margin-bottom:14px}
.news-date{flex:0 0 76px;text-align:center;background:var(--blue-light);color:var(--blue-mid);border-radius:10px;padding:8px 0;font-weight:800}
.news-date small{display:block;font-weight:400;font-size:.75rem}
.news-item h3{font-size:1.05rem;color:var(--blue)}
.news-item p{color:var(--text-light);font-size:.92rem;margin-top:6px}

/* 页脚 */
.site-footer{background:var(--blue-dark);color:rgba(255,255,255,.8);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand img{width:56px;height:56px;border-radius:10px;margin-bottom:12px}
.footer-brand h3{color:#fff;font-size:1.3rem}
.footer-brand p{font-size:.9rem;margin-top:8px}
.footer-col h4{color:var(--gold);margin-bottom:14px;font-size:1rem}
.footer-col a{display:block;padding:5px 0;font-size:.92rem}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:18px 0;text-align:center;font-size:.85rem}
.footer-bottom a{color:rgba(255,255,255,.8)}
.footer-bottom a:hover{color:#fff}

/* 关于页 */
.about-block{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px}
.about-block.rev{direction:rtl}
.about-block.rev>*{direction:ltr}
.about-text h3{color:var(--blue);font-size:1.5rem;margin-bottom:14px}
.about-text p{color:var(--text-light);margin-bottom:10px}
.kv{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px}
.kv div{display:flex;gap:12px;padding:8px 0;border-bottom:1px dashed var(--border);font-size:.95rem}
.kv div:last-child{border-bottom:none}
.kv b{flex:0 0 96px;color:var(--blue)}

/* 响应式 */
@media(max-width:960px){
  .card-grid-3,.card-grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-block{grid-template-columns:1fr}
  .hero h1{font-size:2.2rem}
}
@media(max-width:640px){
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .card-grid-2,.card-grid-3,.card-grid-4{grid-template-columns:1fr}
  .lead-form{grid-template-columns:1fr}
  .stats-row{gap:28px}
  .hero{padding:64px 0}
}

/* ================= 会员/登录/结算/下载 页共用组件 =================
   与 admin.html 视觉语言一致，公开页面与后台共用同一套标签/按钮样式 */
.adm-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.adm-tab{padding:8px 16px;border-radius:20px;border:1px solid #c8d4ea;background:#fff;color:#33445f;font-size:.9rem;cursor:pointer;transition:.2s}
.adm-tab:hover{border-color:var(--blue-mid);color:var(--blue-mid)}
.adm-tab.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.adm-btn{background:var(--blue);color:#fff;border:0;border-radius:8px;padding:10px 20px;font-size:.92rem;cursor:pointer;transition:.2s}
.adm-btn:hover{background:var(--blue-mid)}
.adm-btn:disabled{background:#c3ccd9;cursor:not-allowed}
.adm-btn.ghost{background:#fff;color:var(--blue);border:1px solid #c8d4ea}
.adm-btn.ghost:hover{background:var(--blue-light)}
.adm-btn.sm{padding:6px 12px;font-size:.82rem}
.adm-tag{display:inline-block;padding:2px 8px;border-radius:10px;font-size:.8rem;background:var(--gold-light);color:#8a6d13;white-space:nowrap}

/* 导航购物车图标与角标 */
.nav-cart{position:relative;display:inline-flex;align-items:center;font-size:1.1rem;padding:6px 10px}
.nav-cart:hover{background:var(--blue-light);border-radius:8px}
#cart-badge{position:absolute;top:0;right:0;background:var(--orange);color:#fff;font-size:.68rem;line-height:1;
  min-width:16px;height:16px;border-radius:8px;text-align:center;padding:2px 3px;font-weight:700}

/* 资讯详情正文排版（后台富文本白名单标签的呈现样式） */
.article-body{font-size:1rem;line-height:1.85;color:var(--text)}
.article-body p{margin-bottom:14px}
.article-body h2,.article-body h3,.article-body h4{color:var(--blue);margin:24px 0 12px;line-height:1.4}
.article-body h2{font-size:1.4rem}
.article-body h3{font-size:1.2rem}
.article-body h4{font-size:1.05rem}
.article-body ul,.article-body ol{margin:0 0 14px 24px}
.article-body li{margin-bottom:6px}
.article-body img{max-width:100%;height:auto;border-radius:8px;margin:12px 0}
.article-body blockquote{border-left:4px solid var(--gold);background:var(--gold-light);padding:12px 18px;margin:14px 0;color:#5c4a12;border-radius:0 8px 8px 0}
.article-body table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.92rem}
.article-body th,.article-body td{border:1px solid var(--border);padding:8px 10px;text-align:left}
.article-body th{background:var(--bg-gray);color:var(--blue)}
.article-body a{color:var(--blue-mid);text-decoration:underline}
.article-body pre,.article-body code{background:var(--bg-gray);border-radius:6px;font-family:Consolas,Monaco,monospace;font-size:.9em}
.article-body pre{padding:14px;overflow-x:auto;margin:14px 0}
.article-body code{padding:2px 5px}
.article-body hr{border:0;border-top:1px solid var(--border);margin:24px 0}

/* 轻提示（main.js 动态创建，此处补充过渡兜底） */
.tjx-toast{display:none;transition:opacity .25s}

/* 结算/会员页表单在卡片内的间距微调 */
.card .lead-form{gap:12px}
.card .form-msg{text-align:center;margin-top:12px;font-size:.9rem;min-height:20px}