/* ============ 公司网站 - Apple 风格设计系统 ============ */
:root{
  --bg:#ffffff;
  --tx:#1d1d1f;
  --tx2:#86868b;
  --tx3:#6e6e73;
  --link:#0066cc;
  --line:rgba(0,0,0,.08);
  --nav-bg:rgba(255,255,255,.8);
  --card-bg:#f5f5f7;
  --grad-blue:linear-gradient(135deg,#2997ff,#0066cc);
  --grad-purple:linear-gradient(135deg,#bf5af2,#6a5ff2);
  --grad-green:linear-gradient(135deg,#34c759,#0a84ff);
  --radius:18px;
  --shadow:0 4px 24px rgba(0,0,0,.06);
  --shadow-lg:0 16px 48px rgba(0,0,0,.12);
  --font:"SF Pro Display","SF Pro Text",-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--tx);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5;font-size:17px}
img{max-width:100%}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
button,a{font:inherit}
:focus-visible{outline:3px solid rgba(0,102,204,.35);outline-offset:3px;border-radius:4px}

/* ===== 导航（Apple 风格半透明吸顶 + 玻璃悬浮） ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:980px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 22px;height:48px}
.nav-logo{font-size:17px;font-weight:600;color:var(--tx);letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.nav-logo svg{width:19px;height:19px}
.nav-links{display:flex;gap:34px;list-style:none}
.nav-links a{font-size:12px;color:#333;opacity:.8;letter-spacing:.02em;transition:opacity .2s}
.nav-links a:hover{opacity:1;text-decoration:none}
.nav-links a.active{opacity:1;font-weight:600}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;font-size:20px;color:var(--tx)}
/* ===== Apple 官网风格悬停下拉 ===== */
.nav-links li{position:relative}
.nav-links li.has-dropdown{position:static}
.nav-dropdown{position:absolute;left:50%;top:100%;transform:translateX(-50%) translateY(8px);width:980px;max-width:calc(100vw - 44px);display:flex;gap:40px;justify-content:center;background:rgba(255,255,255,.9);backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.12);border:1px solid rgba(0,0,0,.05);padding:28px 60px;opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;z-index:90;pointer-events:none}
.nav-dropdown.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.has-dropdown:focus-within .nav-dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.dd-col h5{font-size:12px;color:var(--tx3);font-weight:600;margin-bottom:12px;letter-spacing:.03em}
.dd-col a{display:block;font-size:14px;color:var(--tx);opacity:.9;padding:6px 0;white-space:nowrap}
.dd-col a:hover{opacity:1;color:var(--link);text-decoration:none}

/* ===== 通用区块 ===== */
.section{max-width:980px;margin:0 auto;padding:80px 22px}
.section-title{font-size:44px;font-weight:700;letter-spacing:-.015em;margin-bottom:16px}
.section-sub{font-size:21px;color:var(--tx2);max-width:600px;margin-bottom:48px;line-height:1.5}
.center{text-align:center}
.center .section-sub{margin-left:auto;margin-right:auto}
.page-intro{padding-top:100px}
.section-compact{padding-top:0}
.about-content{padding-top:20px}
.anchor-target{scroll-margin-top:72px}

/* ===== Hero ===== */
.hero{text-align:center;padding:110px 22px 80px}
.hero-eyebrow{font-size:14px;color:var(--link);font-weight:600;letter-spacing:.02em;margin-bottom:16px}
.hero-title{font-size:56px;font-weight:700;letter-spacing:-.02em;line-height:1.05;margin-bottom:20px}
.hero-sub{font-size:26px;color:var(--tx2);font-weight:400;margin-bottom:36px;letter-spacing:-.01em}
.hero-cta{display:flex;gap:20px;justify-content:center;align-items:center}
.hero-cta .btn-primary{background:var(--link);color:#fff;font-size:17px;padding:12px 28px;border-radius:980px;transition:all .2s}
.hero-cta .btn-primary:hover{background:#0077ed;text-decoration:none;transform:scale(1.02)}
.hero-cta .btn-link{font-size:17px;color:var(--link)}
.hero-visual{margin:60px auto 0;max-width:900px;border-radius:28px;overflow:hidden;box-shadow:var(--shadow-lg)}
.hero-art{width:100%;display:block;background:linear-gradient(135deg,#0a1628 0%,#0d2a55 55%,#123c77 100%)}
.cta-section{text-align:center}
.cta-section .section-sub{margin-left:auto;margin-right:auto}

/* ===== 产品线卡片 ===== */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pcard{background:var(--card-bg);border-radius:var(--radius);padding:40px 28px;text-align:center;transition:all .3s;display:flex;flex-direction:column;align-items:center;gap:16px}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);background:#fff}
.pcard{transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.pcard .icon{transition:transform .35s}
.pcard:hover .icon{transform:scale(1.12)}
.pcard .icon{width:64px;height:64px;border-radius:18px;display:flex;align-items:center;justify-content:center}
.pcard .icon svg{width:32px;height:32px}
.pcard .icon.blue{background:rgba(41,151,255,.12)}
.pcard .icon.purple{background:rgba(191,90,242,.12)}
.pcard .icon.green{background:rgba(52,199,89,.12)}
.pcard h3{font-size:22px;font-weight:700;letter-spacing:-.01em}
.pcard p{font-size:15px;color:var(--tx2);line-height:1.6}
.pcard .more{font-size:15px;color:var(--link);margin-top:auto}
.pcard .more:hover{text-decoration:underline}
.capabilities-section{background:var(--card-bg);border-radius:28px;margin-bottom:40px}
.capabilities-grid{grid-template-columns:repeat(4,1fr)}
.compact-card{background:#fff}
.compact-card h3{font-size:18px}
.compact-card p{font-size:13px}

/* ===== 产品中心 ===== */
.pline{margin-bottom:80px}
.pline:last-child{margin-bottom:0}
.pline-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:28px}
.pline-head h2{font-size:32px;font-weight:700;letter-spacing:-.01em}
.pline-head p{font-size:15px;color:var(--tx2)}
.pgrid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.pitem{background:var(--card-bg);border-radius:var(--radius);padding:32px;transition:all .3s;border:1px solid transparent}
.pitem:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);background:#fff;border-color:var(--line)}
.pitem .tag{display:inline-block;font-size:11px;font-weight:600;padding:3px 10px;border-radius:6px;margin-bottom:14px;letter-spacing:.03em}
.pitem .tag.t1{background:rgba(41,151,255,.12);color:#0066cc}
.pitem .tag.t2{background:rgba(191,90,242,.12);color:#8a3ffc}
.pitem .tag.t3{background:rgba(52,199,89,.12);color:#1d9e4a}
.pitem h3{font-size:19px;font-weight:700;margin-bottom:8px}
.pitem p{font-size:14px;color:var(--tx2);line-height:1.6}
.pitem .desc{margin-bottom:14px}
.pitem .spec{font-size:12px;color:var(--tx3);border-top:1px solid var(--line);padding-top:12px;margin-top:14px}

/* ===== 公司简介 ===== */
.ab-hero{text-align:center;padding:100px 22px 60px}
.ab-hero h1{font-size:48px;font-weight:700;letter-spacing:-.02em;margin-bottom:16px}
.ab-hero p{font-size:21px;color:var(--tx2);max-width:700px;margin:0 auto;line-height:1.6}
.ab-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:60px}
.ab-card{background:var(--card-bg);border-radius:var(--radius);padding:36px 28px}
.ab-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.ab-card p{font-size:15px;color:var(--tx2);line-height:1.7}
.contact-grid{margin-top:80px}
.contact-value,.contact-value a{font-size:17px;color:var(--tx);font-weight:600}
.contact-address{font-size:15px!important;color:var(--tx)!important}
.ab-values{margin-top:80px}
.ab-values h2{font-size:32px;font-weight:700;text-align:center;margin-bottom:40px}
.ab-values .vgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ab-values .vcard{text-align:center;padding:24px 16px}
.ab-values .vcard .vn{font-size:40px;font-weight:800;background:var(--grad-blue);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:block;margin-bottom:8px}
.ab-values .vcard h4{font-size:16px;font-weight:600;margin-bottom:6px}
.ab-values .vcard p{font-size:13px;color:var(--tx2)}

/* ===== 数据区块（假数据） ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{background:var(--card-bg);border-radius:var(--radius);padding:32px 20px;text-align:center;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s;cursor:default}
.stat-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);background:#fff}
.stat-item .num{font-size:42px;font-weight:800;letter-spacing:-.02em;line-height:1;margin-bottom:8px}
.stat-item .num.n1{color:#0066cc}
.stat-item .num.n2{color:#8a3ffc}
.stat-item .num.n3{color:#1d9e4a}
.stat-item .num.n4{color:#e85d5d}
.stat-item .label{font-size:14px;color:var(--tx2)}
.stat-item .extra{font-size:11px;color:var(--tx3);margin-top:6px}

/* ===== 页脚 ===== */
.footer{background:#f5f5f7;border-top:1px solid var(--line);padding:40px 22px 28px}
.footer-inner{max-width:980px;margin:0 auto}
.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;margin-bottom:28px}
.footer-brand{font-size:18px;font-weight:700}
.footer-brand small{display:block;font-size:12px;color:var(--tx2);font-weight:400;margin-top:4px}
.footer-cols{display:flex;gap:60px}
.footer-cols .col h5{font-size:12px;color:var(--tx3);margin-bottom:10px;font-weight:600}
.footer-cols .col a{display:block;font-size:13px;color:var(--tx2);padding:3px 0}
.footer-cols .col a:hover{color:var(--tx);text-decoration:none}
.footer-bottom{border-top:1px solid var(--line);padding-top:20px;font-size:12px;color:var(--tx3);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* ===== 响应式 ===== */
@media (max-width:800px){
  .hero-title{font-size:40px}
  .hero-sub{font-size:21px}
  .section-title{font-size:34px}
  .pgrid,.pgrid2,.ab-grid,.ab-values .vgrid,.capabilities-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none;position:absolute;top:48px;left:0;right:0;background:rgba(255,255,255,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-direction:column;gap:0;padding:8px 22px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 0;font-size:17px;border-bottom:1px solid var(--line)}
  .nav-links a:last-child{border-bottom:none}
  .nav-dropdown{display:none}
  .nav-toggle{display:block}
  .footer-top{flex-direction:column}
  .footer-cols{flex-wrap:wrap;gap:30px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}