/* ============================================================
   胜利精密(002426) AI智能分析 - 公共样式
   基于07_visual.json · EasyClaw暖红 #C0392B
   字体: Noto Sans SC · 纯白底 · 2026-06-24
   ============================================================ */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;600;700;900&display=swap');

/* === CSS Variables (统一定义，所有子页复用) === */
:root {
  --primary: #C0392B;
  --primary-hover: #E74C3C;
  --primary-light: #FDE8E8;
  --primary-dark: #A93226;
  --bg: #FFFFFF;
  --white: #FFFFFF;
  --text-dark: #2D2926;
  --text-mid: #7A746E;
  --text-light: #A9A39D;
  --border: #E8E3DD;
  --card-shadow: 0 2px 12px rgba(192, 57, 43, 0.08);
  --card-shadow-hover: 0 6px 24px rgba(192, 57, 43, 0.15);
  --gradient-hero: linear-gradient(135deg, #FFF9F4 0%, #FDE8E8 100%);
  --success-green: #2EAA5A;
  --danger-red: #E74C3C;
  --nav-height: 60px;
}

/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--text-dark);background:var(--bg);line-height:1.6;
  padding-top:var(--nav-height);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
::selection{background:var(--primary-light);color:var(--primary-dark)}

/* === Navigation Bar (fixed, 60px) === */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--nav-height);background:var(--white);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 6px rgba(0,0,0,0.04);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;
}
.nav-logo{
  font-weight:900;font-size:18px;white-space:nowrap;
}
.nav-logo .logo-red{color:var(--primary)}
.nav-logo .logo-dark{color:var(--text-dark);font-weight:700}
.nav-links{
  display:flex;align-items:center;gap:2px;
}
.nav-links a{
  font-size:14px;font-weight:600;color:var(--text-mid);
  padding:8px 14px;border-radius:6px;white-space:nowrap;
  transition:all 0.2s ease;
}
.nav-links a:hover{
  background:var(--primary-light);color:var(--primary);
}
.nav-links a.nav-cta{
  background:var(--primary);color:var(--white);
  font-size:13px;padding:8px 20px;border-radius:8px;
  margin-left:6px;font-weight:700;
}
.nav-links a.nav-cta:hover{
  background:var(--primary-hover);color:var(--white);
}
.hamburger{display:none}
.hamburger-btn{
  font-size:14px;font-weight:600;color:var(--text-mid);
  background:none;border:none;cursor:pointer;
  padding:8px 12px;border-radius:6px;
}
.hamburger-btn:hover{background:var(--primary-light);color:var(--primary)}

/* === Hero (左文右图) === */
.hero{
  background:var(--gradient-hero);
  padding:80px 24px 60px;
  display:flex;align-items:center;justify-content:center;
  gap:48px;overflow:hidden;
}
.hero-left{max-width:540px;flex-shrink:0}
.hero-left h1{
  font-size:clamp(28px,5vw,44px);font-weight:900;
  color:var(--text-dark);line-height:1.3;margin-bottom:16px;
}
.hero-left h1 .hl{color:var(--primary)}
.hero-left .subtitle{
  font-size:clamp(15px,2.5vw,18px);color:var(--text-mid);
  margin-bottom:32px;max-width:460px;line-height:1.7;
}
.hero-cta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.cta-primary{
  display:inline-block;background:var(--primary);color:var(--white);
  font-weight:700;font-size:16px;padding:14px 32px;border-radius:8px;
  transition:all 0.2s ease;
}
.cta-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}
.cta-ghost{
  display:inline-block;border:2px solid var(--primary);color:var(--primary);
  font-weight:600;font-size:15px;padding:12px 28px;border-radius:8px;
  transition:all 0.2s ease;
}
.cta-ghost:hover{background:var(--primary-light)}
.hero-right{
  background:var(--white);border-radius:12px;
  box-shadow:var(--card-shadow-hover);padding:20px;
  transform:rotate(-1deg);max-width:340px;flex-shrink:0;
}
.hero-right .chart-placeholder{
  background:linear-gradient(135deg,#FFF9F4,#FDE8E8);
  border-radius:8px;height:200px;display:flex;
  align-items:center;justify-content:center;
  color:var(--text-mid);font-size:14px;text-align:center;
  border:1px dashed var(--border);
}

/* === Trust Bar === */
.trust-bar{
  background:var(--primary-light);text-align:center;
  padding:16px 24px;font-size:13px;color:var(--primary-dark);
  display:flex;justify-content:center;gap:32px;flex-wrap:wrap;
}

/* === Common Section === */
.section{
  max-width:1100px;margin:0 auto;padding:60px 24px;
}
.section h2{
  font-size:clamp(22px,3.5vw,32px);font-weight:800;
  color:var(--text-dark);margin-bottom:12px;
}
.section .section-lead{
  font-size:15px;color:var(--text-mid);margin-bottom:36px;
  line-height:1.7;max-width:680px;
}
.section h3{
  font-size:clamp(16px,2vw,20px);font-weight:700;
  color:var(--text-dark);margin-bottom:8px;
}
.section p{
  font-size:15px;color:var(--text-mid);line-height:1.8;
  margin-bottom:16px;
}

/* === Info Grid & Cards === */
.info-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.info-card{
  background:var(--white);border:1px solid var(--border);
  border-radius:12px;padding:28px;
  box-shadow:var(--card-shadow);
  transition:all 0.3s ease;
}
.info-card:hover{
  box-shadow:var(--card-shadow-hover);
  transform:translateY(-2px);
}
.info-card .card-icon{
  font-size:32px;margin-bottom:16px;
}
.info-card h4{
  font-size:17px;font-weight:700;color:var(--text-dark);
  margin-bottom:8px;
}
.info-card p{
  font-size:14px;color:var(--text-mid);line-height:1.6;
  margin-bottom:14px;
}
.info-card .card-link{
  font-size:14px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:4px;
  transition:gap 0.2s;
}
.info-card .card-link:hover{gap:8px}

/* === CTA Banner === */
.cta-banner{
  background:var(--gradient-hero);text-align:center;
  padding:60px 24px;border-radius:16px;margin:0 24px;
}
.cta-banner h2{font-size:clamp(22px,4vw,30px);font-weight:900;margin-bottom:12px}
.cta-banner p{font-size:15px;color:var(--text-mid);margin-bottom:28px}
.cta-banner .cta-primary{padding:16px 40px;font-size:17px}

/* === FAQ === */
.faq-list{max-width:780px;margin:0 auto}
.faq-item{
  border-bottom:1px solid var(--border);padding:18px 0;
}
.faq-item summary{
  cursor:pointer;font-weight:700;font-size:15px;
  color:var(--text-dark);padding:4px 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::after{content:'▾';font-size:12px;color:var(--text-light);margin-left:12px}
.faq-item[open] summary::after{content:'▴'}
.faq-item .faq-answer{
  font-size:14px;color:var(--text-mid);line-height:1.8;padding:8px 0;
}

/* === How-To Steps === */
.steps-row{display:flex;gap:24px;flex-wrap:wrap}
.step-card{
  flex:1;min-width:200px;text-align:center;
  padding:28px 20px;background:var(--white);
  border:1px solid var(--border);border-radius:12px;
}
.step-card .step-num{
  display:inline-flex;width:40px;height:40px;
  background:var(--primary);color:var(--white);
  border-radius:50%;align-items:center;justify-content:center;
  font-size:18px;font-weight:900;margin-bottom:12px;
}
.step-card h4{font-size:15px;font-weight:700;margin-bottom:8px}
.step-card p{font-size:13px;color:var(--text-mid);line-height:1.6}


/* === Flow4 流程卡片（横向箭头连接） === */
.flow4{display:flex;align-items:stretch;gap:6px;margin:14px 0 4px;flex-wrap:nowrap}
.flow-step{flex:1;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px 12px 12px;text-align:center;position:relative;transition:transform .2s}
.flow-step:hover{transform:translateY(-3px)}
.flow-num{position:absolute;top:-10px;left:50%;transform:translateX(-50%);width:22px;height:22px;border-radius:50%;background:var(--primary);color:#fff;font-size:12px;font-weight:900;display:flex;align-items:center;justify-content:center}
.flow-ico{font-size:26px;margin:6px 0 8px}
.flow-t{font-size:13.5px;font-weight:800;color:var(--text-dark);margin-bottom:5px}
.flow-d{font-size:11.5px;color:var(--text-mid);line-height:1.6;min-height:34px}
.flow-d code{font-size:11px;color:var(--primary);word-break:break-all}
.flow-note{font-size:11px;color:var(--primary);font-weight:700;margin-top:8px}
.flow-arrow{display:flex;align-items:center;color:var(--primary);font-size:20px;font-weight:900;flex-shrink:0}
@media(max-width:600px){
  .flow4{flex-direction:column}
  .flow-arrow{transform:rotate(90deg);justify-content:center;padding:2px 0}
  .flow-d{min-height:0}
}

/* === Data Table === */
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th{
  background:var(--primary-light);color:var(--primary-dark);
  font-weight:700;padding:12px 16px;text-align:left;
  border-bottom:2px solid var(--primary);
}
.data-table td{
  padding:12px 16px;border-bottom:1px solid var(--border);
  color:var(--text-mid);
}
.data-table tr:hover td{background:#FFF9F4}

/* === Footer === */
.footer{
  background:var(--text-dark);color:var(--white);
  padding:40px 24px 28px;margin-top:60px;
}
.footer .footer-grid{
  max-width:1100px;margin:0 auto;
  display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;
  margin-bottom:28px;
}
.footer h4{font-size:14px;font-weight:700;margin-bottom:12px;color:rgba(255,255,255,0.7)}
.footer a{font-size:13px;color:rgba(255,255,255,0.5);display:block;margin-bottom:8px;transition:color 0.2s}
.footer a:hover{color:var(--white)}
.footer .disclaimer{
  max-width:1100px;margin:0 auto;padding-top:20px;
  border-top:1px solid rgba(255,255,255,0.1);
  font-size:12px;color:rgba(255,255,255,0.4);line-height:1.8;
}

/* === Back to Top === */
.back-top{
  position:fixed;bottom:28px;right:28px;
  width:44px;height:44px;background:var(--primary);
  color:var(--white);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;cursor:pointer;z-index:900;
  opacity:0;pointer-events:none;transition:all 0.3s;
  box-shadow:0 4px 16px rgba(192,57,43,0.3);
}
.back-top.visible{opacity:1;pointer-events:auto}

/* === Responsive === */
@media(max-width:1024px){
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .hero{gap:28px}
  .hero-right{max-width:280px}
}
@media(max-width:768px){
  .nav-links{display:none}
  .hamburger{display:block}
  .nav-links.open{
    display:flex;flex-direction:column;position:absolute;
    top:var(--nav-height);left:0;right:0;background:var(--white);
    border-bottom:2px solid var(--border);padding:12px 0;
    box-shadow:0 8px 24px rgba(0,0,0,0.08);gap:0;
  }
  .nav-links.open a{padding:12px 24px;border-radius:0;width:100%}
  .nav-links.open a.nav-cta{margin:8px 24px;width:auto;text-align:center}
  .hero{flex-direction:column;padding:60px 20px 40px;gap:32px}
  .hero-right{display:none}
  .hero-left h1{font-size:clamp(24px,6vw,32px)}
  .info-grid{grid-template-columns:1fr}
  .trust-bar{flex-direction:column;gap:8px;padding:14px 20px}
  .cta-banner{margin:0 16px;padding:48px 20px}
}
@media(max-width:480px){
  .section{padding:40px 16px}
  .hero-left .subtitle{font-size:14px}
  .hero-cta-row{flex-direction:column;align-items:stretch}
  .cta-primary,.cta-ghost{text-align:center}
  .steps-row{flex-direction:column}
}