/* 关于我们专题页样式（仅 /about 页面加载） */
/* 复用全站变量：--blue --ink --muted --line --pale */

.about-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f3f6fb 0%,#e8eefb 55%,#dde7fa 100%);padding:130px 5% 150px}
.about-hero-inner{max-width:1440px;margin:auto;position:relative;z-index:2}
.about-hero .eyebrow{animation:aboutFadeUp .8s .1s both}
.about-hero h1{font-size:56px;line-height:1.18;margin:18px 0 22px;letter-spacing:1px;animation:aboutFadeUp .8s .25s both}
.about-hero h1 span{color:var(--blue)}
.about-hero .about-lead{font-size:17px;line-height:1.9;color:#3d4964;max-width:640px;margin:0 0 34px;animation:aboutFadeUp .8s .4s both}
.about-hero-actions{display:flex;align-items:center;gap:28px;animation:aboutFadeUp .8s .55s both}
.about-hero-actions .text-link{font-size:14px}
.about-hero-art{position:absolute;inset:0;z-index:1;pointer-events:none}
.about-hero-art .sphere{position:absolute}
.about-hero-art .sphere:after{content:'';position:absolute;inset:12%;border-radius:50%;border:1px solid #ffffff8f;box-shadow:inset -6px -6px 20px #adc3e255}
.about-bubble{position:absolute;border-radius:50%;background:radial-gradient(circle at 29% 22%,#fff 0,#ffffffbc 6%,#eef7ff80 15%,#a8c3e23d 35%,#7c9ac461 56%,#f8fcffb3 68%,#688fc687 81%,#d0e0f56e 94%);box-shadow:inset 7px 6px 16px #ffffffdd,inset -9px -10px 20px #3c629a3b,16px 30px 40px #4b679629;border:1px solid #fff9;animation:aboutFloat 9s ease-in-out infinite}
.about-bubble.b2{animation-duration:12s;animation-delay:-3s}
.about-bubble.b3{animation-duration:10.5s;animation-delay:-6s}
.about-bubble.b4{animation-duration:13s;animation-delay:-2s}
.about-bubble.b5{animation-duration:11s;animation-delay:-5s}

/* 数据条 */
.about-stats{background:var(--blue);color:#fff;padding:56px 5%}
.about-stats-inner{max-width:1440px;margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.about-stat{border-left:1px solid #ffffff3d;padding:6px 0 6px 26px}
.about-stat b{display:block;font-size:44px;font-weight:600;line-height:1.1;letter-spacing:1px;font-variant-numeric:tabular-nums}
.about-stat small{display:block;margin-top:10px;font-size:13px;color:#c9d5f4;letter-spacing:1px}
.about-stat em{display:block;margin-top:4px;font-size:10px;font-style:normal;letter-spacing:2px;color:#8fa3d9}

/* 公司简介 */
.about-story{padding:110px 5%;max-width:1440px;margin:auto;display:grid;grid-template-columns:5fr 7fr;gap:70px;align-items:start}
.about-story-left{position:sticky;top:120px}
.about-story-left h2{font-size:34px;line-height:1.35;margin:16px 0 0;letter-spacing:1px}
.about-story-right p{font-size:15px;line-height:2.05;color:#3d4964;margin:0 0 22px;text-align:justify}
.about-story-right p strong{color:var(--ink)}
.about-quote{border-left:3px solid var(--blue);background:#f7f9fd;padding:18px 26px;font-size:14px;line-height:1.9;color:var(--ink);margin-top:30px}

/* 产品与应用 */
.about-range{background:#f7f9fd;padding:90px 5%}
.about-range-inner{max-width:1440px;margin:auto}
.about-range h2{font-size:30px;margin:14px 0 8px;letter-spacing:1px}
.about-range-sub{font-size:13px;color:var(--muted);margin:0 0 34px}
.about-chip-group{margin-bottom:38px}
.about-chip-group h3{font-size:12px;letter-spacing:3px;color:var(--blue);margin:0 0 16px;display:flex;align-items:center;gap:10px}
.about-chip-group h3 i{width:6px;height:6px;background:var(--blue);border-radius:50%;display:inline-block}
.about-chips{display:flex;flex-wrap:wrap;gap:12px}
.about-chip{display:inline-block;padding:12px 22px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.about-chip:hover{transform:translateY(-3px);box-shadow:0 10px 26px #4b679626;border-color:#b9c8ea}
.about-chip.plain{color:#3d4964;background:#fff;cursor:default}

/* 工艺亮点（深蓝满屏） */
.about-craft{background:linear-gradient(160deg,#1b2a7f 0%,#202f91 55%,#2a3aa5 100%);color:#fff;padding:110px 5%}
.about-craft-inner{max-width:1440px;margin:auto}
.about-craft .eyebrow{color:#b4c2f0}
.about-craft .eyebrow i{background:#b4c2f0}
.about-craft h2{font-size:34px;margin:16px 0 10px;letter-spacing:1px}
.about-craft-sub{font-size:14px;color:#c9d5f4;line-height:1.9;max-width:720px;margin:0 0 46px}
.about-craft-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.about-craft-card{background:#ffffff14;border:1px solid #ffffff2e;padding:34px 32px;backdrop-filter:blur(2px);transition:transform .3s ease,background .3s ease}
.about-craft-card:hover{transform:translateY(-4px);background:#ffffff1f}
.about-craft-card.good{border-color:#ffffff59}
.about-craft-card h3{font-size:19px;margin:0 0 6px}
.about-craft-card .tag{display:inline-block;font-size:10px;letter-spacing:2px;padding:5px 12px;border-radius:999px;margin-bottom:16px}
.about-craft-card .tag.yes{background:#d8e4ff;color:#1b2a7f}
.about-craft-card .tag.no{background:#ffffff24;color:#e3ebff}
.about-craft-card p{font-size:14px;line-height:1.95;color:#dbe4fb;margin:0}
.about-certs{display:flex;flex-wrap:wrap;gap:14px;margin-top:44px}
.about-certs span{border:1px solid #ffffff3d;padding:10px 20px;font-size:12px;letter-spacing:1.5px;color:#dfe7ff}

/* 全球市场 */
.about-world{padding:100px 5%;max-width:1440px;margin:auto}
.about-world-head{max-width:720px}
.about-world h2{font-size:30px;margin:14px 0 10px;letter-spacing:1px}
.about-world-head p{font-size:14px;line-height:1.95;color:#3d4964;margin:0}
.about-world-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:44px}
.about-world-item{border-top:2px solid var(--blue);padding-top:18px}
.about-world-item b{display:block;font-size:22px;letter-spacing:2px;color:var(--ink)}
.about-world-item small{display:block;margin-top:8px;font-size:11px;letter-spacing:2px;color:var(--muted)}

/* 结尾 CTA */
.about-cta{background:#f3f6fb;padding:100px 5%;text-align:center}
.about-cta-inner{max-width:860px;margin:auto}
.about-cta .eyebrow{justify-content:center}
.about-cta h2{font-size:36px;margin:18px 0 14px;letter-spacing:2px}
.about-cta p{font-size:14px;line-height:1.95;color:#3d4964;margin:0 0 36px}

/* 动效基线：仅在 JS 可用时隐藏，避免无 JS 时内容不可见 */
.about-js .reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.22,.61,.36,1),transform .8s cubic-bezier(.22,.61,.36,1)}
.about-js .reveal.in-view{opacity:1;transform:none}
.about-js .reveal.d1{transition-delay:.08s}
.about-js .reveal.d2{transition-delay:.16s}
.about-js .reveal.d3{transition-delay:.24s}
.about-js .reveal.d4{transition-delay:.32s}

@keyframes aboutFadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
@keyframes aboutFloat{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-22px) rotate(6deg)}}

@media(max-width:1080px){
  .about-hero{padding:90px 5% 100px}
  .about-hero h1{font-size:40px}
  .about-stats-inner{grid-template-columns:repeat(2,1fr)}
  .about-story{grid-template-columns:1fr;gap:34px;padding:70px 5%}
  .about-story-left{position:static}
  .about-craft-grid{grid-template-columns:1fr}
  .about-world-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .about-hero-art{opacity:.5}
}
@media(max-width:640px){
  .about-hero h1{font-size:31px}
  .about-lead{font-size:15px}
  .about-stats{padding:40px 5%}
  .about-stat b{font-size:32px}
  .about-range,.about-craft,.about-world,.about-cta{padding:64px 5%}
  .about-world-grid{grid-template-columns:1fr}
  .about-bubble.b4,.about-bubble.b5{display:none}
}
@media(prefers-reduced-motion:reduce){
  .about-bubble,.about-hero .eyebrow,.about-hero h1,.about-hero .about-lead,.about-hero-actions{animation:none}
  .about-js .reveal{opacity:1;transform:none;transition:none}
}