/* ==========================================================
   上线性能与顺滑度增强引擎 (Smoothness & Performance Optimization)
   ========================================================== */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

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

/* 硬件加速与流畅悬停 */
a, button, .media-news-card, .btn-media-primary, .btn-media-secondary, .faq-card, .intro-panel {
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* 移动端平滑滚动与防抖 */
.table-wrapper, .table-container, .code-box, pre {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

/* 媒体图片防溢出与自适应 */
img, svg, video, canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 消除点击高亮延迟 */
a, button, input, select, textarea {
  -webkit-tap-highlight-color: transparent;
}


:root{--bg:#050712;--panel:rgba(255,255,255,.08);--text:#fff;--muted:#a8b0c4;--line:rgba(255,255,255,.16);--cyan:#22d3ee;--violet:#8b5cf6;--gold:#fbbf24;--pink:#f472b6;--green:#34d399}
*{box-sizing:border-box;margin:0;padding:0}body{background:radial-gradient(circle at 50% 0,rgba(251,191,36,.22),transparent 24%),radial-gradient(circle at 18% 18%,rgba(34,211,238,.20),transparent 28%),radial-gradient(circle at 82% 18%,rgba(139,92,246,.24),transparent 30%),linear-gradient(180deg,#050712,#0b1020 52%,#050712);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;line-height:1.68}a{color:var(--cyan);text-decoration:none;font-weight:800}a:hover{color:#fff}.container{width:min(1180px,calc(100% - 40px));margin:0 auto}.notice{background:rgba(251,191,36,.10);border-bottom:1px solid rgba(251,191,36,.34);color:#fde68a;padding:10px 0;font-size:13px}.site-header{background:rgba(5,7,18,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{color:#fff;font-size:22px;font-weight:950}.brand:before{content:"EXPO";color:var(--gold);border:1px solid rgba(251,191,36,.45);border-radius:999px;padding:2px 8px;margin-right:8px;font-size:12px}.nav,.footer-links{display:flex;flex-wrap:wrap;gap:10px}.nav a,.footer-links a{color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-size:14px}.nav a:hover,.footer-links a:hover{color:#fff;border-color:var(--gold);text-decoration:none}.hero{position:relative;overflow:hidden;padding:82px 0 58px}.hero:after{content:"";position:absolute;left:10%;right:10%;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),var(--cyan),transparent)}.hero .container{display:grid;grid-template-columns:1fr .9fr;gap:38px;align-items:center}.eyebrow{display:inline-flex;padding:7px 13px;border-radius:999px;background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.4);color:var(--gold);font-size:13px;font-weight:950;margin-bottom:18px}.hero h1{max-width:900px;font-size:clamp(40px,6vw,84px);line-height:.98;letter-spacing:-.08em;margin-bottom:22px}.hero p{max-width:800px;color:var(--muted);font-size:19px}.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-width:190px;padding:14px 20px;border-radius:999px;border:1px solid var(--line);font-weight:950}.button.primary{background:linear-gradient(90deg,var(--gold),#fb7185,var(--violet));color:#111;border:none;box-shadow:0 20px 60px rgba(251,191,36,.28)}.button.secondary{background:var(--panel);color:#fff}.stage{position:relative;min-height:410px;display:grid;place-items:center}.product{width:min(360px,100%);height:250px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,rgba(255,255,255,.18),rgba(255,255,255,.05));box-shadow:0 0 80px rgba(34,211,238,.22),0 40px 90px rgba(0,0,0,.4);display:grid;place-items:center;font-size:42px;font-weight:950}.spotlight{position:absolute;width:180px;height:360px;background:linear-gradient(180deg,rgba(251,191,36,.24),transparent);filter:blur(18px);transform:skewX(-18deg)}.spotlight.left{left:20px}.spotlight.right{right:20px;transform:skewX(18deg);background:linear-gradient(180deg,rgba(34,211,238,.24),transparent)}.section{padding:52px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}.section h2{font-size:clamp(30px,4vw,52px);line-height:1.05;letter-spacing:-.06em}.section-note{max-width:450px;color:var(--muted)}.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card,.intro-box,.article{background:var(--panel);border:1px solid var(--line);border-radius:24px;box-shadow:0 24px 70px rgba(0,0,0,.22);backdrop-filter:blur(14px)}.card{min-height:210px;padding:26px}.card .num{display:inline-flex;color:var(--gold);font-size:12px;font-weight:950;margin-bottom:32px}.card h3{font-size:23px;margin-bottom:10px}.card p,.intro-box p,.intro-box li,td{color:var(--muted)}.card strong,td strong{color:var(--cyan)}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.intro-box{padding:30px}.intro-box h3{font-size:30px;margin-bottom:12px}.intro-box ul{margin:14px 0 0 20px}.table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:24px}table{width:100%;min-width:760px;border-collapse:collapse}th,td{padding:17px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{color:#fff;background:rgba(255,255,255,.06);font-size:13px}tr:last-child td{border-bottom:0}.faq-list{display:grid;gap:12px}details{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px}summary{cursor:pointer;list-style:none;font-weight:950;color:#fff}summary::-webkit-details-marker{display:none}details p{margin-top:10px;color:var(--muted)}.article{max-width:880px;margin:42px auto;padding:38px}.article h1{font-size:clamp(34px,5vw,62px);line-height:1.05;letter-spacing:-.06em;margin-bottom:20px}.article h2{font-size:28px;margin:34px 0 12px;border-top:1px solid var(--line);padding-top:20px}.article p,.article li{color:var(--muted);margin-bottom:12px}.article ul{margin-left:20px}.site-footer{margin-top:42px;padding:36px 0;border-top:1px solid var(--line);background:rgba(0,0,0,.18)}.site-footer p{margin-top:14px;color:var(--muted);font-size:14px}@media(max-width:980px){.hero .container{grid-template-columns:1fr}.stage{min-height:300px}}@media(max-width:820px){.header-inner{align-items:flex-start;flex-direction:column;padding:16px 0}.grid-6,.intro-grid{grid-template-columns:1fr}.section-head{display:block}.section-note{margin-top:10px}}