/* 页面级样式 — 提取自 网站前端模板/about.html */
/* ================= 关于页专属布局（与其它页面不同） ================= */
:root{--about-art-op:.15} /* 深色模式下 Hero 背景图透明度 10% */
html[data-theme="light"]{--about-art-op:.15}
/* --- Hero：左文右图，城市山景插画 --- */
.about-hero{position:relative;overflow:hidden;padding:150px 0 90px;
background:
radial-gradient(ellipse 55% 70% at 12% 20%,rgba(34,211,238,.12),transparent 60%),
radial-gradient(ellipse 50% 60% at 88% 80%,rgba(139,92,246,.12),transparent 60%),
var(--bg)}
/* 背景图独立成层，便于控制透明度（与业务范围页同款做法） */
.about-hero::before{content:"";position:absolute;inset:0;pointer-events:none;
background:url("/assets/images/about-hero-bg.jpg") center/cover no-repeat;opacity:var(--about-art-op)}
.about-hero>*{position:relative;z-index:1}
.about-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.about-hero h1{font-size:clamp(34px,5vw,58px);font-weight:900;line-height:1.1}
.about-hero h1 .line1{display:block;font-size:.72em;font-weight:700;line-height:1;color:var(--txt2)}
.about-hero h1 .gradient-text{display:block;line-height:1.05;animation:none;background-size:auto}
.about-hero .sub{margin-top:20px;color:var(--txt2);font-size:16px;max-width:520px}
.about-hero .en{font-family:var(--mono);font-size:12px;color:var(--txt3);letter-spacing:.4em;margin-bottom:16px}
.about-art{border-radius:24px;border:1px solid var(--line2);overflow:hidden;background:linear-gradient(160deg,rgba(34,211,238,.06),rgba(139,92,246,.08));box-shadow:var(--shadow)}
.about-art svg{display:block;width:100%;height:auto}
.about-hero .facts{display:flex;gap:34px;margin-top:36px;flex-wrap:wrap}
.about-hero .fact b{display:block;font-family:var(--mono);font-size:34px;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.about-hero .fact span{font-size:13px;color:var(--txt3)}
/* --- 页面骨架：左侧粘性页内导航 --- */
.about-body{display:grid;grid-template-columns:220px 1fr;gap:56px;padding:70px 0 100px}
.side-nav{position:sticky;top:110px;align-self:start;display:flex;flex-direction:column;gap:8px}
.side-nav a{display:flex;align-items:center;gap:12px;padding:13px 18px;border-radius:12px;font-size:14.5px;color:var(--txt2);border:1px solid transparent;transition:.3s}
.side-nav a b{font-family:var(--mono);font-size:11px;color:var(--txt3);letter-spacing:.1em}
.side-nav a:hover{color:var(--txt);background:var(--veil);border-color:var(--line)}
.side-nav a.on{color:var(--txt);background:linear-gradient(120deg,rgba(34,211,238,.1),rgba(139,92,246,.1));border-color:var(--line2)}
.side-nav a.on b{color:var(--cyan)}
/* --- 模块通用：渐变高光条 --- */
.blk{margin-bottom:100px;scroll-margin-top:110px}
.blk-head{position:relative;padding:26px 30px;border-radius:18px;margin-bottom:40px;overflow:hidden;
border:1px solid var(--line2);
background:linear-gradient(120deg,rgba(34,211,238,.08),rgba(59,130,246,.05) 45%,rgba(139,92,246,.1))}
.blk-head::after{content:"";position:absolute;top:-60%;right:-4%;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.18),transparent 70%);pointer-events:none}
.blk-head::before{content:"";position:absolute;bottom:-70%;left:6%;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(139,92,246,.16),transparent 70%);pointer-events:none}
.blk-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;position:relative;z-index:1}
.blk-head p{position:relative;z-index:1;margin-top:8px;color:var(--txt2);font-size:14.5px}
.blk-head .no{position:absolute;top:18px;right:24px;font-family:var(--mono);font-size:44px;font-weight:800;color:var(--txt3);opacity:.18;z-index:1}
/* --- 公司简介 --- */
.intro-grid{display:grid;grid-template-columns:1fr .72fr;gap:44px;align-items:start}
.intro-text p{color:var(--txt2);font-size:15.5px;margin-bottom:18px;text-align:justify}
.intro-text .hl{color:var(--txt);font-weight:700}
.intro-card{position:sticky;top:110px;border-radius:20px;border:1px solid var(--line2);padding:30px;overflow:hidden;
background:linear-gradient(160deg,rgba(34,211,238,.07),rgba(139,92,246,.07))}
.intro-card .logo-big{font-size:52px}
.intro-card h4{font-size:17px;font-weight:800;margin:12px 0 4px}
.intro-card .mono{font-family:var(--mono);font-size:11px;color:var(--txt3);letter-spacing:.22em}
.intro-card dl{margin-top:18px;display:grid;gap:0}
.intro-card dl div{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.intro-card dt{color:var(--txt3);white-space:nowrap}
.intro-card dd{color:var(--txt);text-align:right}
/* --- 发展历程：中心线交替时间轴 --- */
.tl{position:relative;padding:10px 0}
.tl::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%);
background:linear-gradient(180deg,transparent,var(--cyan) 8%,var(--blue) 50%,var(--violet) 92%,transparent)}
.tl-item{position:relative;width:50%;padding:0 44px 46px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 46px 44px}
.tl-item .dot{position:absolute;top:2px;width:18px;height:18px;border-radius:50%;background:var(--bg);border:3px solid var(--cyan);box-shadow:0 0 18px rgba(34,211,238,.5);z-index:2}
.tl-item:nth-child(odd) .dot{right:-9px}
.tl-item:nth-child(even) .dot{left:-9px}
.tl-card{border-radius:16px;border:1px solid var(--line);padding:22px 24px;background:linear-gradient(160deg,var(--panel),var(--panel2));transition:transform .4s,border-color .4s,box-shadow .4s}
.tl-card:hover{transform:translateY(-5px);border-color:var(--line2);box-shadow:var(--shadow)}
/* 发展阶段：不同卡片不同渐变底色 */
#timeline .tl-item:nth-child(1) .tl-card{background:linear-gradient(160deg,rgba(59,130,246,.16),rgba(59,130,246,.03))}
#timeline .tl-item:nth-child(2) .tl-card{background:linear-gradient(160deg,rgba(34,211,238,.15),rgba(34,211,238,.03))}
#timeline .tl-item:nth-child(3) .tl-card{background:linear-gradient(160deg,rgba(52,211,153,.15),rgba(52,211,153,.03))}
#timeline .tl-item:nth-child(4) .tl-card{background:linear-gradient(160deg,rgba(139,92,246,.16),rgba(139,92,246,.03))}
#timeline .tl-item:nth-child(5) .tl-card{background:linear-gradient(160deg,rgba(245,158,11,.15),rgba(245,158,11,.03))}
#timeline .tl-item:nth-child(6) .tl-card{background:linear-gradient(160deg,rgba(244,63,94,.13),rgba(244,63,94,.03))}
#timeline .tl-item:nth-child(7) .tl-card{background:linear-gradient(160deg,rgba(99,102,241,.16),rgba(99,102,241,.03))}
#timeline .tl-item:nth-child(8) .tl-card{background:linear-gradient(160deg,rgba(45,212,191,.15),rgba(45,212,191,.03))}
#timeline .tl-item:nth-child(9) .tl-card{background:linear-gradient(160deg,rgba(56,189,248,.15),rgba(56,189,248,.03))}
.tl-card .yr{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.14em}
.tl-card:nth-child(even) .yr{color:var(--violet)}
.tl-card h4{font-size:16.5px;font-weight:700;margin:8px 0 6px;display:flex;align-items:center;gap:10px}
.tl-card p{font-size:13.5px;color:var(--txt2)}
.tl-item:nth-child(odd){text-align:right}
.tl-item:nth-child(odd) .tl-card h4{justify-content:flex-end}
@media(max-width:900px){
.tl::before{left:10px}
.tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 40px 40px;text-align:left}
.tl-item .dot,.tl-item:nth-child(odd) .dot,.tl-item:nth-child(even) .dot{left:2px;right:auto}
.tl-item:nth-child(odd) .tl-card h4{justify-content:flex-start}
}
/* --- 企业文化：渐变玻璃卡 --- */
.cult-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.cult-card{position:relative;border-radius:18px;padding:28px;border:1px solid var(--line);overflow:hidden;
background:linear-gradient(150deg,var(--panel),var(--panel2));transition:.4s}
.cult-card:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:var(--shadow)}
.cult-card .glow{position:absolute;width:180px;height:180px;border-radius:50%;filter:blur(60px);opacity:.16;right:-40px;top:-40px}
.cult-card:nth-child(1) .glow{background:var(--cyan)}
.cult-card:nth-child(2) .glow{background:var(--blue)}
.cult-card:nth-child(3) .glow{background:var(--violet)}
.cult-card:nth-child(4) .glow{background:var(--amber)}
.cult-card .em{font-size:30px}
.cult-card h4{font-size:17px;font-weight:800;margin:12px 0 8px}
.cult-card p{font-size:13.5px;color:var(--txt2);position:relative;z-index:1}
/* --- 服务承诺（五条）渐变横幅 --- */
.promise-band{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:36px}
.promise{padding:24px 20px;border-radius:16px;text-align:center;border:1px solid var(--line2);
background:linear-gradient(160deg,rgba(34,211,238,.09),rgba(139,92,246,.07));transition:.35s}
.promise:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(34,211,238,.18)}
.promise b{display:block;font-family:var(--mono);font-size:22px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.promise span{display:block;margin-top:10px;font-size:13.5px;color:var(--txt2)}
/* --- 狼性文化：金色高光 --- */
.wolf-band-bg{border-radius:24px;padding:60px 40px;position:relative;overflow:hidden;
background:
radial-gradient(ellipse 60% 80% at 15% 10%,rgba(245,158,11,.1),transparent 60%),
radial-gradient(ellipse 50% 70% at 90% 90%,rgba(251,113,133,.08),transparent 60%),
linear-gradient(160deg,var(--panel),var(--panel2));
border:1px solid var(--line)}
.wolf-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-top:40px}
.wolf-card{padding:20px;border-radius:14px;border:1px solid var(--line);background:var(--veil);transition:.35s}
.wolf-card:hover{border-color:var(--amber);transform:translateY(-4px);background:rgba(245,158,11,.07)}
.wolf-card b{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--amber)}
.wolf-card span{display:block;margin-top:8px;font-size:12.5px;color:var(--txt2)}
.eleven{counter-reset:w11;columns:2;column-gap:34px;margin-top:26px}
.eleven li{break-inside:avoid;list-style:none;counter-increment:w11;padding:14px 0 14px 44px;position:relative;color:var(--txt2);font-size:14px;border-bottom:1px dashed var(--line)}
.eleven li::before{content:counter(w11,decimal-leading-zero);position:absolute;left:0;top:14px;font-family:var(--mono);font-size:13px;color:var(--amber)}
@media(max-width:800px){.eleven{columns:1}}
/* --- 人才理念 --- */
.hr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.hr-card{border-radius:18px;padding:30px 26px;border:1px solid var(--line);background:linear-gradient(160deg,var(--panel),var(--panel2));position:relative;overflow:hidden;transition:.4s}
.hr-card:hover{transform:translateY(-6px);border-color:var(--cyan);box-shadow:0 20px 50px rgba(34,211,238,.15)}
.hr-card .big{font-size:40px}
.hr-card h4{font-size:18px;font-weight:800;margin:14px 0 8px}
.hr-card p{font-size:13.5px;color:var(--txt2)}
.hr-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--grad);opacity:0;transition:.4s}
.hr-card:hover::after{opacity:1}
@media(max-width:960px){
.about-hero-grid{grid-template-columns:1fr}
.about-body{grid-template-columns:1fr}
.side-nav{position:static;flex-direction:row;flex-wrap:wrap}
.intro-grid{grid-template-columns:1fr}
.intro-card{position:static}
}
@media(max-width:640px){
.about-body{padding:70px 20px 100px}
/* 手机端 hero 两行标题居中：渐变行是收缩宽度的块级元素，需 margin auto 居中（文本行由 .about-hero 的 text-align:center 继承居中） */
.about-hero h1 .gradient-text{margin-left:auto;margin-right:auto}
}
/* 发展历程时间轴：错峰入场间隔放宽（0.25s/项），呈现更从容的滚动叙事节奏 */
#timeline > .tl-item:nth-child(1){transition-delay:.25s}
#timeline > .tl-item:nth-child(2){transition-delay:.5s}
#timeline > .tl-item:nth-child(3){transition-delay:.75s}
#timeline > .tl-item:nth-child(4){transition-delay:1s}
#timeline > .tl-item:nth-child(5){transition-delay:1.25s}
#timeline > .tl-item:nth-child(6){transition-delay:1.5s}
#timeline > .tl-item:nth-child(7){transition-delay:1.75s}
#timeline > .tl-item:nth-child(8){transition-delay:2s}
#timeline > .tl-item:nth-child(9){transition-delay:2.25s}