/* ============================================================
   科新网络官网 — 样式表 (SEO Optimized + 实时新闻模块)
   版本: 2.1 | 主色: 科技蓝 #2563eb | 高亮: 琥珀黄 #f59e0b
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-light: #dbeafe;
  --blue-bg: #eff6ff;
  --amber: #f59e0b;
  --amber-light: #fef3c7;
  --red: #ef4444;
  --red-light: #fee2e2;
  --green: #10b981;
  --green-light: #d1fae5;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1),0 8px 10px -6px rgba(0,0,0,.05);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-sm: 8px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
  --nav-height: 72px;
  --max-width: 1200px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height)}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.6;color:var(--gray-700);
  background:var(--white);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--blue-dark)}
ul{list-style:none}

/* ---------- 通用布局 ---------- */
.shell{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);background:var(--blue-light);padding:4px 14px;border-radius:20px;margin-bottom:12px}
.section-head h2{font-size:32px;font-weight:800;color:var(--gray-900);margin-bottom:8px}
.section-head h2 .accent{color:var(--blue)}
.section-sub{font-size:16px;color:var(--gray-500);max-width:500px;margin:0 auto}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;padding:12px 28px;border-radius:50px;border:2px solid transparent;cursor:pointer;transition:all var(--transition);text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--blue);color:var(--white);border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;color:var(--blue);border-color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:var(--white)}
.btn-block{display:flex;width:100%;justify-content:center}

/* ==================== 导航栏 ==================== */
.site-header{position:sticky;top:0;z-index:1000;height:var(--nav-height);background:rgba(255,255,255,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(0,0,0,.06);transition:all var(--transition)}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.nav{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--gray-900);font-weight:800;font-size:20px}
.brand:hover{color:var(--blue)}
.brand-icon{font-size:26px;color:var(--blue)}
.nav-actions{display:flex;align-items:center;gap:8px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:8px 16px;border-radius:8px;font-size:15px;font-weight:500;color:var(--gray-600);transition:all var(--transition);position:relative}
.nav-links a:hover{color:var(--blue);background:var(--blue-bg)}
.nav-links a.nav-cta{background:var(--blue);color:var(--white);padding:8px 20px;border-radius:50px;margin-left:8px}
.nav-links a.nav-cta:hover{background:var(--blue-dark);color:var(--white)}

/* 导航栏实时小红点 */
.nav-live-dot{
  display:inline-block;width:7px;height:7px;background:var(--red);border-radius:50%;
  margin-left:2px;vertical-align:super;animation:livePulse 1.5s ease-in-out infinite;
}

.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;z-index:1001}
.menu-btn span{display:block;width:24px;height:2.5px;background:var(--gray-700);border-radius:2px;transition:all var(--transition)}

/* ==================== 英雄区 ==================== */
.hero{position:relative;padding:80px 0 100px;background:linear-gradient(135deg,#eff6ff 0%,#dbeafe 50%,#f0f9ff 100%);overflow:hidden}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,rgba(37,99,235,.08) 0%,transparent 70%),radial-gradient(ellipse at 70% 40%,rgba(245,158,11,.06) 0%,transparent 60%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-eyebrow{font-size:14px;font-weight:600;color:var(--blue);margin-bottom:16px;letter-spacing:.02em}
.hero-copy h1{font-size:44px;font-weight:900;color:var(--gray-900);line-height:1.2;margin-bottom:20px}
.hero-highlight{color:var(--blue)}
.hero-lead{font-size:18px;color:var(--gray-500);line-height:1.7;margin-bottom:32px;max-width:480px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-item{background:var(--white);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow-md);transition:transform var(--transition)}
.stat-item:hover{transform:translateY(-4px)}
.stat-num{display:block;font-size:36px;font-weight:900;color:var(--amber)}
.stat-item span{font-size:14px;color:var(--gray-500);margin-top:4px;display:block}

/* ==================== 关于我们 ==================== */
.about-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start}
.about-text p{font-size:16px;margin-bottom:16px;line-height:1.8}
.about-list{margin-top:20px}
.about-list li{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:15px;color:var(--gray-600)}
.about-list li i{color:var(--green);font-size:18px;flex-shrink:0}
.about-service-areas{background:var(--blue-bg);border-radius:var(--radius-lg);padding:28px}
.about-service-areas h3{font-size:18px;font-weight:700;color:var(--gray-800);margin-bottom:16px}
.area-tags{display:flex;flex-wrap:wrap;gap:8px}
.area-tags span{background:var(--white);padding:8px 16px;border-radius:20px;font-size:14px;font-weight:500;color:var(--blue);box-shadow:var(--shadow-sm);transition:all var(--transition)}
.area-tags span:hover{background:var(--blue);color:var(--white);transform:translateY(-1px)}

/* ==================== 服务卡片 ==================== */
.services{background:var(--gray-50)}
.service-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.svc-card{background:var(--white);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;box-shadow:var(--shadow-md);transition:all var(--transition);border:2px solid transparent;position:relative;overflow:hidden}
.svc-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:var(--blue)}
.svc-card-featured{border-color:var(--blue);background:linear-gradient(180deg,#eff6ff 0%,var(--white) 30%)}
.svc-badge{position:absolute;top:16px;right:16px;background:var(--amber);color:var(--white);font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px}
.svc-icon{width:64px;height:64px;margin:0 auto 20px;background:var(--blue-bg);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--blue)}
.svc-card h3{font-size:18px;font-weight:700;color:var(--gray-800);margin-bottom:8px}
.svc-card>p{font-size:14px;color:var(--gray-500);margin-bottom:16px;min-height:40px}
.svc-price{margin:8px 0}
.price-label{font-size:13px;color:var(--gray-400);display:block}
.price-num{font-size:28px;font-weight:900;color:var(--amber)}
.price-suffix{font-size:14px;color:var(--gray-400)}
.svc-features{margin-top:16px;text-align:left}
.svc-features li{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:13px;color:var(--gray-600)}
.svc-features li i{color:var(--green);font-size:12px;flex-shrink:0}

/* ==================== 案例展示 ==================== */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:all var(--transition)}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-xl)}
.case-img-wrap{position:relative;height:160px;background:var(--gray-100);display:flex;align-items:center;justify-content:center}
.case-placeholder{font-size:48px;color:var(--blue);opacity:.5}
.case-tag{position:absolute;top:12px;left:12px;background:var(--blue);color:var(--white);font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px}
.case-body{padding:20px}
.case-body h4{font-size:16px;font-weight:700;color:var(--gray-800);margin-bottom:8px}
.case-body p{font-size:14px;color:var(--gray-500);line-height:1.6;margin-bottom:12px}
.case-location{font-size:13px;color:var(--blue);font-weight:500}
.case-location i{margin-right:4px}

/* ==================== 行业资讯 ==================== */
.news{background:var(--gray-50)}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.news-card{background:var(--white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md);transition:all var(--transition)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.news-cat{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:12px;background:var(--blue-light);color:var(--blue);margin-bottom:8px}
.news-card time{display:block;font-size:13px;color:var(--gray-400);margin-bottom:8px}
.news-card h4{font-size:16px;font-weight:700;line-height:1.4;margin-bottom:8px}
.news-card h4 a{color:var(--gray-800)}
.news-card h4 a:hover{color:var(--blue)}
.news-card p{font-size:14px;color:var(--gray-500);line-height:1.6}

/* ================================================================
   🔴 实时新闻模块 (Live News) — 新增
   ================================================================ */

.live-news{background:linear-gradient(180deg,#fefefe 0%,var(--gray-50) 100%)}

/* -- LIVE 标签 -- */
.eyebrow--live{
  background:var(--red-light)!important;color:var(--red)!important;
  display:inline-flex!important;align-items:center;gap:8px;
}
.live-pulse{
  display:inline-block;width:9px;height:9px;background:var(--red);
  border-radius:50%;animation:livePulse 1.5s ease-in-out infinite;
}
@keyframes livePulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(239,68,68,.6)}
  50%{opacity:.5;box-shadow:0 0 0 6px rgba(239,68,68,0)}
}

/* -- 头条滚动条 -- */
.breaking-news-bar{
  display:flex;align-items:center;background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow-md);overflow:hidden;margin-bottom:24px;
  border-left:4px solid var(--red);
}
.breaking-label{
  flex-shrink:0;background:var(--red);color:var(--white);font-weight:700;font-size:13px;
  padding:14px 20px;display:flex;align-items:center;gap:6px;letter-spacing:.02em;
}
.breaking-marquee-wrap{
  flex:1;overflow:hidden;position:relative;padding:0 16px;
}
.breaking-marquee{
  display:flex;gap:60px;white-space:nowrap;
  animation:marqueeScroll 25s linear infinite;
}
.breaking-marquee:hover{animation-play-state:paused}
.breaking-marquee a{
  display:inline-flex;align-items:center;gap:8px;color:var(--gray-700);font-size:14px;
  font-weight:500;transition:color var(--transition);flex-shrink:0;
}
.breaking-marquee a:hover{color:var(--red)}
.breaking-marquee .bullet{color:var(--red);font-size:8px}
.breaking-refresh{
  flex-shrink:0;padding:14px 16px;cursor:pointer;color:var(--gray-400);
  transition:all var(--transition);border:none;background:none;font-size:16px;
  border-left:1px solid var(--gray-200);
}
.breaking-refresh:hover{color:var(--red);background:var(--red-light)}
.breaking-refresh.spinning i{animation:spin .6s linear}

@keyframes marqueeScroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
@keyframes spin{
  to{transform:rotate(360deg)}
}

/* -- 分类筛选 -- */
.live-news-filters{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:28px;
}
.filter-btn{
  padding:8px 18px;border-radius:50px;border:1.5px solid var(--gray-300);background:var(--white);
  font-size:14px;font-weight:500;color:var(--gray-600);cursor:pointer;
  transition:all var(--transition);display:inline-flex;align-items:center;gap:6px;
}
.filter-btn:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-bg)}
.filter-btn.active{background:var(--blue);color:var(--white);border-color:var(--blue)}

/* -- 新闻列表 -- */
.live-news-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}

.live-news-item{
  display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;
  background:var(--white);border-radius:var(--radius);padding:18px 20px;
  box-shadow:var(--shadow-sm);transition:all var(--transition);
  border-left:4px solid transparent;position:relative;overflow:hidden;
}
.live-news-item:hover{box-shadow:var(--shadow-md);transform:translateX(3px)}
.live-news-item.is-new{border-left-color:var(--red);animation:newItemGlow 2s ease-out}

@keyframes newItemGlow{
  0%{background:var(--red-light);box-shadow:0 0 0 4px rgba(239,68,68,.15)}
  100%{background:var(--white);box-shadow:var(--shadow-sm)}
}

/* 新闻分类色条 */
.live-news-item.cat-tech{border-left-color:var(--blue)}
.live-news-item.cat-local{border-left-color:var(--green)}
.live-news-item.cat-policy{border-left-color:var(--amber)}
.live-news-item.cat-industry{border-left-color:#8b5cf6}
.live-news-item.cat-digital{border-left-color:#06b6d4}
.live-news-item.is-new{border-left-color:var(--red)!important}

.live-news-tag{
  display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:700;
  padding:4px 12px;border-radius:20px;white-space:nowrap;letter-spacing:.03em;
}
.live-news-tag.tag-tech{background:var(--blue-light);color:var(--blue)}
.live-news-tag.tag-local{background:var(--green-light);color:var(--green)}
.live-news-tag.tag-policy{background:var(--amber-light);color:var(--amber)}
.live-news-tag.tag-industry{background:#ede9fe;color:#7c3aed}
.live-news-tag.tag-digital{background:#cffafe;color:#0891b2}

/* 新标记 */
.live-new-badge{
  display:inline-flex;align-items:center;gap:3px;font-size:10px;font-weight:800;
  color:var(--red);background:var(--red-light);padding:3px 8px;border-radius:10px;
  animation:badgeBlink 1s ease-in-out infinite;margin-left:6px;
}
@keyframes badgeBlink{
  0%,100%{opacity:1}
  50%{opacity:.4}
}

.live-news-content{min-width:0}
.live-news-title{
  font-size:15px;font-weight:600;color:var(--gray-800);line-height:1.4;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.live-news-title a{color:var(--gray-800);transition:color var(--transition)}
.live-news-title a:hover{color:var(--blue)}
.live-news-desc{font-size:13px;color:var(--gray-500);margin-top:4px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.live-news-meta{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex-shrink:0}
.live-news-source{font-size:12px;color:var(--gray-400);display:flex;align-items:center;gap:4px}
.live-news-time{font-size:12px;color:var(--gray-400);white-space:nowrap}
.live-news-time.just-now{color:var(--red);font-weight:600}

/* -- 底部状态栏 -- */
.live-news-status{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding:16px 20px;background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);font-size:13px;color:var(--gray-500);
}
.status-indicator{display:flex;align-items:center;gap:8px}
.status-dot{width:8px;height:8px;background:var(--green);border-radius:50%;animation:livePulse 2s ease-in-out infinite}
.status-indicator.checking .status-dot{background:var(--amber);animation-duration:.6s}
.status-meta{font-size:13px;color:var(--gray-400)}
.status-meta strong{color:var(--blue);font-weight:600}

/* 淡入动画 */
.live-news-item.fade-in{animation:fadeInUp .4s ease-out}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}

/* ==================== FAQ ==================== */
.faq{background:var(--white)}
.faq-list{max-width:720px;margin:0 auto}
.faq-item{border:1px solid var(--gray-200);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:all var(--transition)}
.faq-item:hover{border-color:var(--blue-light)}
.faq-item.active{border-color:var(--blue);box-shadow:var(--shadow-md)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 24px;background:var(--white);border:none;cursor:pointer;font-size:16px;font-weight:600;color:var(--gray-800);text-align:left;transition:all var(--transition)}
.faq-question:hover{background:var(--blue-bg)}
.faq-question i{font-size:14px;color:var(--gray-400);transition:transform var(--transition);flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(180deg);color:var(--blue)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.active .faq-answer{max-height:300px}
.faq-answer p{padding:0 24px 20px;font-size:15px;color:var(--gray-600);line-height:1.7}

/* ==================== 联系我们 ==================== */
.contact{background:var(--gray-50)}
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-form{background:var(--white);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-md)}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--gray-700);margin-bottom:6px}
.required{color:var(--red)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--gray-300);border-radius:var(--radius-sm);font-size:15px;color:var(--gray-700);background:var(--white);transition:border-color var(--transition);font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.form-group input.error,.form-group textarea.error{border-color:var(--red)}
.form-group input.valid{border-color:var(--green)}
.form-note{font-size:12px;color:var(--gray-400);text-align:center;margin-top:16px}
.form-note a{color:var(--gray-500);text-decoration:underline}
.contact-info{display:flex;flex-direction:column;gap:16px}
.info-card{display:flex;align-items:flex-start;gap:16px;background:var(--white);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);transition:all var(--transition)}
.info-card:hover{box-shadow:var(--shadow-md)}
.info-icon{width:44px;height:44px;min-width:44px;background:var(--blue-bg);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--blue)}
.info-card strong{display:block;font-size:15px;color:var(--gray-800);margin-bottom:4px}
.info-card p{font-size:14px;color:var(--gray-500)}
.info-card a{color:var(--blue);font-weight:500}

/* ==================== 底部 ==================== */
.site-footer{background:var(--gray-900);color:var(--gray-300);padding-top:56px}
.footer-inner{display:grid;grid-template-columns:1fr 2fr;gap:48px;padding-bottom:40px}
.footer-brand .brand-icon{font-size:28px;color:var(--blue);display:block;margin-bottom:8px}
.footer-brand strong{display:block;font-size:20px;color:var(--white);margin-bottom:4px}
.footer-brand p{font-size:14px;color:var(--gray-400)}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-col h4{font-size:16px;font-weight:700;color:var(--white);margin-bottom:16px}
.footer-col ul li{padding:6px 0}
.footer-col ul li a{font-size:14px;color:var(--gray-400);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--white)}
.footer-col ul li{font-size:14px;color:var(--gray-400)}
.footer-col i{margin-right:6px;color:var(--blue)}
.footer-bottom{border-top:1px solid var(--gray-800);padding:20px 0;text-align:center}
.footer-bottom p{font-size:13px;color:var(--gray-500);margin:4px 0}
.footer-bottom a{color:var(--gray-400)}
.footer-bottom a:hover{color:var(--white)}

/* ==================== 移动端底部导航 ==================== */
.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;z-index:999;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--gray-200);padding:6px 0 env(safe-area-inset-bottom,8px);justify-content:space-around}
.mobile-bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 16px;font-size:11px;color:var(--gray-500);text-decoration:none;transition:color var(--transition)}
.mobile-bottom-nav a i{font-size:20px}
.mobile-bottom-nav a:hover,.mobile-bottom-nav a:active{color:var(--blue)}

/* ==================== 侧滑菜单 ==================== */
.side-drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1100;opacity:0;pointer-events:none;transition:opacity var(--transition)}
.side-drawer-overlay.active{opacity:1;pointer-events:auto}
.side-drawer{position:fixed;top:0;right:0;bottom:0;width:280px;z-index:1101;background:var(--white);padding:24px;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);overflow-y:auto}
.side-drawer.active{transform:translateX(0)}
.drawer-close{display:block;margin-left:auto;background:none;border:none;font-size:32px;color:var(--gray-500);cursor:pointer;padding:0 8px;line-height:1}
.drawer-close:hover{color:var(--gray-800)}
.side-drawer nav{margin-top:24px}
.side-drawer nav a{display:block;padding:14px 16px;font-size:16px;font-weight:500;color:var(--gray-700);border-radius:var(--radius-sm);transition:all var(--transition)}
.side-drawer nav a:hover{background:var(--blue-bg);color:var(--blue)}
.side-drawer .drawer-cta{background:var(--blue)!important;color:var(--white)!important;text-align:center;margin-top:12px;border-radius:50px!important}

/* ==================== 回到顶部 ==================== */
.back-to-top{position:fixed;bottom:80px;right:24px;z-index:998;width:44px;height:44px;border-radius:50%;background:var(--blue);color:var(--white);border:none;cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transform:translateY(10px);transition:all var(--transition)}
.back-to-top.visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-to-top:hover{background:var(--blue-dark);transform:translateY(-3px)}

/* ==================== 响应式设计 ==================== */

/* 平板 (≤1024px) */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-stats{grid-template-columns:repeat(4,1fr);gap:12px}
  .service-cards{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact-layout{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .footer-links{grid-template-columns:repeat(3,1fr)}
  .live-news-item{grid-template-columns:auto 1fr;gap:10px}
  .live-news-meta{grid-column:1/-1;flex-direction:row;justify-content:flex-start;gap:16px}
}

/* 手机 (≤768px) */
@media (max-width:768px){
  .section{padding:56px 0}
  .shell{padding:0 16px}
  .nav-links{display:none}
  .menu-btn{display:flex}
  .site-header{height:60px}
  :root{--nav-height:60px}
  .hero{padding:56px 0 64px}
  .hero-copy h1{font-size:28px}
  .hero-lead{font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .stat-num{font-size:28px}
  .hero-ctas{flex-direction:column}
  .hero-ctas .btn{justify-content:center}
  .about-layout{grid-template-columns:1fr;gap:32px}
  .service-cards{grid-template-columns:1fr;gap:16px}
  .case-grid{grid-template-columns:1fr;gap:16px}
  .news-grid{grid-template-columns:1fr;gap:16px}
  .faq-question{font-size:15px;padding:14px 18px}
  .faq-answer p{padding:0 18px 16px}
  .contact-layout{gap:24px}
  .contact-form{padding:24px}
  .footer-links{grid-template-columns:1fr;gap:20px}
  .mobile-bottom-nav{display:flex}
  .back-to-top{bottom:80px;right:12px}
  body{padding-bottom:70px}

  /* 实时新闻移动端适配 */
  .breaking-label{padding:10px 14px;font-size:12px}
  .breaking-marquee a{font-size:13px}
  .breaking-marquee{gap:40px;animation-duration:18s}
  .live-news-item{grid-template-columns:1fr;gap:8px;padding:14px 16px}
  .live-news-meta{flex-direction:row;justify-content:flex-start;gap:12px}
  .live-news-title{font-size:14px}
  .live-news-filters{gap:6px}
  .filter-btn{padding:6px 14px;font-size:13px}
  .live-news-status{flex-direction:column;align-items:flex-start;gap:8px}
}

/* 小手机 (≤480px) */
@media (max-width:480px){
  .section-head h2{font-size:24px}
  .hero-copy h1{font-size:24px}
  .hero-stats{gap:8px}
  .stat-item{padding:16px 8px}
  .stat-num{font-size:24px}
  .stat-item span{font-size:12px}
  .svc-card{padding:24px 16px}
  .filter-btn{font-size:12px;padding:5px 10px}
}

/* ---------- 打印样式 ---------- */
@media print{
  .site-header,.mobile-bottom-nav,.side-drawer,.back-to-top,.hero-bg,.breaking-news-bar,.live-news-filters,.live-news-status{display:none!important}
  .section{padding:20px 0;page-break-inside:avoid}
  body{font-size:12pt;color:#000}
  a{color:#000;text-decoration:underline}
}

/* ---------- 减少动画 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}