/* =====================================================================
   Fareach Technology 官网 — 全站共用样式 site.css
   视觉语言：style-ref.html（深色 / Sora / #2997ff / 毛玻璃导航 / 光晕光点光扫）
   不依赖任何外部 CSS 库；仅 Google Fonts 的 Sora。

   ---------------------------------------------------------------------
   可用类名清单（页面 agent 直接复用，不要另起同名类）
   ---------------------------------------------------------------------
   布局
     .gut                 左右安全边距（22px，窄屏 18px；含 safe-area）
     .wrap                内容最大宽 1120px 居中（常与 .gut 同用）
     .sec                 区块：上下留白（padding-block 88/40）。用法 <section class="sec"><div class="wrap gut">…
     .sec--tight          较小的上留白
     .grid-2 / .grid-3 / .grid-4   等宽网格，≤900px 自动降为 2 列 / ≤600px 1 列
   文字
     .eyebrow             区块大标题上方的英文小字（蓝色、Sora、大写），如 ABOUT US
     .sec-title           区块大标题（Sora 700，clamp 28–48px）。默认左对齐，加 .center 居中
     .sub-title           小标题（旧站 h3，如“我们是谁”“企业文化”）
     .lead / .muted       次要说明文字 / 次要色
     .prose               正文段落容器：p 之间留白、两端对齐、合适行高
     .center              文本居中（工具类）
   组件
     .btn                 蓝色胶囊按钮（含 hover 光扫）；.btn--ghost 描边版
     .card-img            图上文下卡片：<article class="card-img"><div class="card-img__media"><img></div>
                            <div class="card-img__body"><h3 class="card-img__title">…</h3><p class="card-img__text">…</p></div></article>
                          hover：上浮 + 阴影 + 图片 scale(1.06) + 边框高光。.card-img__media 默认 16:10，可用 style="--ar:4/3" 改比例
     .media               图文并排：<div class="media"><div class="media__img"><img></div><div class="media__text">…</div></div>
                          默认图左文右；.media--rev 图右文左；≤820px 上下堆叠（图在上）
     .vph                 视频占位块：<div class="vph" style="--ar:16/9"><span class="vph__icon"></span>
                            <span class="vph__label" data-k="vphX">视频位 · xxx.mp4</span></div>
                          （--ar 设置宽高比；也可直接给 width/height）
     .glass               毛玻璃表面（半透明 + blur + 细边框，圆角 20px）
   页头
     .site-head           固定头部容器（包含 .topbar 与 .nav），滚动后 .site-head.scrolled 毛玻璃
     .topbar              Email 细条（support@fareach.net）
     .nav / .brand / .links / .lang / .burger   导航（结构见 index.html，直接复制）
     .drawer / .drawer__p / .drawer__x           手机抽屉（≤760px 出现汉堡）
     .links a.on / .drawer a.on                  当前页高亮（site.js 自动加，无需手写）
     .page-hero           非首页的矮页头（氛围光晕 + 光扫，标题居中）：
                            <header class="page-hero"><div class="page-hero__bg"><i class="blob b1"></i><i class="blob b2"></i><div class="sweep"></div></div>
                            <div class="page-hero__in wrap gut"><p class="eyebrow">MAJOR EVENT</p><h1 class="page-hero__title" data-k="…">大事件</h1></div></header>
     .hero …              首页全屏 Hero（仅首页用）
   页脚
     .site-foot / .site-foot__blob / .site-foot__in / .site-foot__cc   页脚（结构见 index.html）
   动效
     .io                  滚动渐入：进入视口后 site.js 加 .in。
     .stagger             容器类：其内部 .io 子元素依次延迟渐入（site.js 写入 --d）
     .reveal + .d1~.d5    首屏入场（body.ready 后播放），用于 Hero / page-hero 内
     .odo                 翻滚数字（由 site.js 按 data-odo 生成，见 site.js 说明）
   所有动画在 prefers-reduced-motion: reduce 下关闭。
   ===================================================================== */

/* ---------- 设计变量（深色固定） ---------- */
:root{
  --bg:#000; --bg-2:#06070d; --surface:#1c1c1e; --surface-2:#111; --hairline:#2c2c2e;
  --fg:#f5f5f7; --muted:#98989d; --accent:#2997ff; --accent-soft:#7fb6ff;
  --glass:rgba(16,16,20,.62);
  --shadow:0 24px 70px -20px rgba(0,0,0,.75);
  --radius:22px;
  --maxw:1120px;
  --head-h:96px;               /* topbar + nav 的大致总高，用于页头/锚点偏移 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --f-head:"Sora",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --f-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:var(--head-h); -webkit-text-size-adjust:100%}
body{margin:0; background:var(--bg); color:var(--fg); font-family:var(--f-body);
  font-size:16px; line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden}
img{max-width:100%; height:auto; display:block}
a{color:inherit}
h1,h2,h3,h4{text-wrap:balance}
button{font:inherit}
:focus-visible{outline:3px solid var(--accent); outline-offset:3px}

/* ---------- 布局 ---------- */
.gut{padding-left:max(22px,env(safe-area-inset-left,0px)); padding-right:max(22px,env(safe-area-inset-right,0px))}
@media(max-width:480px){.gut{padding-left:max(18px,env(safe-area-inset-left,0px)); padding-right:max(18px,env(safe-area-inset-right,0px))}}
.wrap{max-width:var(--maxw); margin-left:auto; margin-right:auto; width:100%}
.sec{padding-block:88px 40px; position:relative}
.sec--tight{padding-top:48px}
.grid-2,.grid-3,.grid-4{display:grid; gap:clamp(18px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}
.center{text-align:center}

/* ---------- 文字 ---------- */
.eyebrow{font:600 12.5px/1.3 "Sora",sans-serif; letter-spacing:.2em; text-transform:uppercase; color:var(--accent); margin:0 0 14px}
.sec-title{font-family:var(--f-head); font-weight:700; font-size:clamp(28px,4.4vw,48px); line-height:1.14; letter-spacing:-.012em; margin:0}
.sec-title.center,.center .sec-title{margin-left:auto; margin-right:auto}
.sec-head{margin-bottom:clamp(32px,5vw,56px)}
.sub-title{font-family:var(--f-head); font-weight:600; font-size:clamp(20px,2.4vw,26px); line-height:1.3; margin:0 0 22px; display:flex; align-items:center; gap:12px}
.sub-title::before{content:""; width:4px; height:1.05em; border-radius:4px; background:linear-gradient(180deg,var(--accent),#5a46e0); flex:none}
.sub-title:empty{display:none}
.lead{margin:16px 0 0; color:var(--muted); font-size:clamp(15px,1.6vw,17px)}
.muted{color:var(--muted)}
.prose p{margin:0 0 1.05em; color:#c9c9cf; font-size:15.5px; line-height:1.85; text-align:justify; text-justify:inter-character}
.prose p:last-child{margin-bottom:0}
:lang(zh) .prose--indent p{text-indent:2em}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex; align-items:center; gap:9px; cursor:pointer; background:var(--accent); color:#fff; border:none; border-radius:30px;
  padding:14px 26px; font:600 15px/1 var(--f-head); text-decoration:none; position:relative; overflow:hidden; transition:transform .25s var(--ease), box-shadow .25s}
.btn:hover{transform:translateY(-2px); box-shadow:0 12px 30px -10px rgba(41,151,255,.7)}
.btn::before{content:""; position:absolute; inset:0; background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%); transform:translateX(-120%); transition:transform .6s}
.btn:hover::before{transform:translateX(120%)}
.btn svg{width:17px; height:17px; stroke:currentColor; stroke-width:2.2; fill:none; stroke-linecap:round; stroke-linejoin:round; transition:transform .25s}
.btn:hover svg{transform:translateX(3px)}
.btn--ghost{background:transparent; border:1px solid rgba(255,255,255,.4)}
.btn--ghost:hover{border-color:var(--accent); background:rgba(41,151,255,.14)}

/* ---------- 固定头部：Email 顶条 + 导航 ---------- */
.site-head{position:fixed; top:0; left:0; right:0; z-index:40; transition:background .35s, box-shadow .35s, backdrop-filter .35s;
  padding-top:env(safe-area-inset-top,0px)}
.site-head.scrolled{background:var(--glass); backdrop-filter:saturate(180%) blur(26px); -webkit-backdrop-filter:saturate(180%) blur(26px);
  box-shadow:0 1px 0 var(--hairline), 0 10px 34px -12px rgba(0,0,0,.5)}
.topbar{font-size:12px; line-height:1; color:rgba(255,255,255,.62); border-bottom:1px solid rgba(255,255,255,.08); transition:padding .35s}
.topbar__in{display:flex; align-items:center; gap:8px; padding-block:9px}
.topbar svg{width:14px; height:14px; stroke:currentColor; fill:none; stroke-width:1.8; flex:none}
.topbar a{text-decoration:none; color:rgba(255,255,255,.86); letter-spacing:.02em}
.topbar a:hover{color:var(--accent)}
.site-head.scrolled .topbar__in{padding-block:6px}

.nav{transition:padding .35s; padding-block:16px}
.site-head.scrolled .nav{padding-block:10px}
.nav__in{display:flex; align-items:center; justify-content:space-between; gap:18px}
.brand{display:inline-flex; align-items:center; gap:11px; color:#fff; text-decoration:none; min-width:0; flex:none}
.brand__mark{height:34px; width:auto; flex:none; display:block; overflow:visible;
  filter:drop-shadow(0 0 7px rgba(81,168,223,.28))}
.brand__mark .m1{stroke:rgba(120,180,240,.55); stroke-width:1px; vector-effect:non-scaling-stroke; paint-order:stroke}
.brand__txt{display:flex; flex-direction:column; justify-content:center; min-width:0; line-height:1}
.brand__en{font:700 18px/1 "Sora",var(--f-head); letter-spacing:.06em; color:#fff; white-space:nowrap}
.brand__cn{margin-top:5px; font:500 10.5px/1.2 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  letter-spacing:.06em; color:rgba(255,255,255,.62); white-space:nowrap}
.brand:hover .brand__en{color:#fff}
.brand:hover .brand__mark{filter:drop-shadow(0 0 10px rgba(81,168,223,.5))}
.links{display:flex; align-items:center; gap:clamp(16px,2.4vw,30px)}
.links a{position:relative; font-size:14px; text-decoration:none; color:rgba(255,255,255,.86); padding:4px 0; transition:color .25s; white-space:nowrap}
.links a::after{content:""; position:absolute; left:50%; right:50%; bottom:-3px; height:1.5px; background:currentColor; transition:left .28s, right .28s; opacity:.85}
.links a:hover{color:#fff}
.links a:hover::after,.links a.on::after{left:0; right:0}
.links a.on{color:var(--accent)}
.lang{font:600 12.5px/1 "Sora",sans-serif; border:1px solid rgba(255,255,255,.55); border-radius:20px; padding:7px 13px; background:transparent; color:#fff; cursor:pointer; transition:border-color .25s, background .25s, color .25s; white-space:nowrap}
.lang:hover{border-color:var(--accent); background:rgba(41,151,255,.16)}
.nav__r{display:flex; align-items:center; gap:10px}
.burger{display:none; width:42px; height:42px; border:none; background:transparent; color:#fff; cursor:pointer; place-items:center; margin-right:-8px}
.burger svg{width:24px; height:24px}
.nav__r .lang--m{display:none}
@media(max-width:760px){
  .links{display:none} .burger{display:grid} .nav__r .lang--m{display:inline-block}
  .brand{gap:9px}
  .brand__mark{height:30px}
  .brand__en{font-size:16px}
  .brand__cn{font-size:10px; letter-spacing:.02em; margin-top:4px}
}
@media(max-width:340px){.brand__cn{font-size:9px; letter-spacing:0}}
/* 761–960px：桌面导航 + 两行品牌并排时收紧，避免英文导航与品牌重叠 */
@media(min-width:761px) and (max-width:960px){
  .nav__in{gap:14px} .links{gap:14px} .links a{font-size:13px} .brand{gap:9px} .brand__mark{height:30px} .brand__en{font-size:16px} .brand__cn{font-size:9.5px; letter-spacing:.02em}
}

/* 手机抽屉 */
.drawer{position:fixed; inset:0; z-index:60; background:rgba(4,6,12,.6); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px); opacity:0; pointer-events:none; transition:opacity .3s; visibility:hidden}
.drawer.open{opacity:1; pointer-events:auto; visibility:visible}
.drawer__p{position:absolute; top:0; right:0; height:100%; width:min(82vw,330px); background:#141416; border-left:1px solid var(--hairline); color:var(--fg);
  transform:translateX(100%); transition:transform .36s var(--ease); display:flex; flex-direction:column;
  padding:max(80px,calc(env(safe-area-inset-top,0px) + 72px)) 28px 28px; gap:2px; overflow-y:auto}
.drawer.open .drawer__p{transform:none}
.drawer__p a{font-size:17px; text-decoration:none; color:var(--fg); padding:15px 0; border-bottom:1px solid var(--hairline)}
.drawer__p a.on{color:var(--accent)}
.drawer__x{position:absolute; top:max(20px,env(safe-area-inset-top,0px)); right:18px; width:42px; height:42px; border:none; background:transparent; color:var(--fg); cursor:pointer; display:grid; place-items:center}
.drawer__mail{margin-top:auto; padding-top:24px; font-size:13px; color:var(--muted); word-break:break-all}
.drawer__mail a{border:none; padding:0; font-size:13px; color:var(--accent-soft)}

/* ---------- 氛围背景（光晕 / 光点 / 光扫），Hero 与 page-hero 共用 ---------- */
.blob{position:absolute; border-radius:50%; opacity:.85; display:block; --s:58px;
  /* 无实时模糊：用径向渐变模拟 “实心圆 + blur(--s)” 的高斯边缘（元素向外扩 2σ 的透明边框，中心不变），
     动画只改 transform，可由合成器直接处理，不必每帧重做模糊 */
  box-sizing:content-box; border:calc(var(--s)*2) solid transparent; margin:calc(var(--s)*-2) 0 0 calc(var(--s)*-2); background-origin:border-box;
  background-image:radial-gradient(closest-side,rgba(var(--c),1) calc(100% - var(--s)*4),rgba(var(--c),.84) calc(100% - var(--s)*3),rgba(var(--c),.5) calc(100% - var(--s)*2),rgba(var(--c),.16) calc(100% - var(--s)),rgba(var(--c),0))}
.b1{width:52vw; height:52vw; --c:27,99,200; top:-10%; left:-8%; animation:drift1 9s ease-in-out infinite}
.b2{width:46vw; height:46vw; --c:90,70,224; bottom:-16%; right:-6%; margin:0 calc(var(--s)*-2) calc(var(--s)*-2) 0; animation:drift2 12s ease-in-out infinite}
.b3{width:40vw; height:40vw; --c:19,163,148; top:18%; right:12%; margin:calc(var(--s)*-2) calc(var(--s)*-2) 0 0; animation:drift3 8s ease-in-out infinite; opacity:.6}
@keyframes drift1{50%{transform:translate(24%,20%) scale(1.3)}}
@keyframes drift2{50%{transform:translate(-22%,-16%) scale(1.22)}}
@keyframes drift3{50%{transform:translate(-20%,26%) scale(1.34)}}
.sweep{position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(115deg,transparent 40%,rgba(140,185,255,.16) 50%,transparent 60%);
  transform:translateX(-60%); animation:sweep 7s ease-in-out infinite}
@keyframes sweep{0%,100%{transform:translateX(-60%)}50%{transform:translateX(60%)}}
#stars{position:absolute; inset:0; width:100%; height:100%; opacity:.85; pointer-events:none}

/* ---------- 首页全屏 Hero ---------- */
.hero{position:relative; min-height:88vh; min-height:88svh; display:flex; align-items:center; overflow:hidden; background:var(--bg-2)}
.hero__bg{position:absolute; inset:0; z-index:0; overflow:hidden}
.hero__scrim{position:absolute; inset:0; z-index:1; background:linear-gradient(180deg,rgba(6,7,13,.55),rgba(6,7,13,.22) 42%,rgba(6,7,13,.42) 78%,#000 100%)}
.hero__grain{position:absolute; inset:0; z-index:1; opacity:.55; background:radial-gradient(130% 90% at 30% 0%,transparent 40%,rgba(0,0,0,.55))}
.hero__in{position:relative; z-index:2; padding-block:calc(var(--head-h) + 60px) 90px; color:#fff}
.hero__copy{margin-left:auto; max-width:620px; text-align:right}   /* 旧站：文字在右侧、右对齐 */
.hero__line{font-family:var(--f-head); font-weight:600; font-size:clamp(19px,2.4vw,28px); line-height:1.5; color:rgba(255,255,255,.9); margin:0}
.hero__cta{margin-top:40px}
.hero__fade{position:absolute; left:0; right:0; bottom:0; height:120px; z-index:1; background:linear-gradient(180deg,transparent,var(--bg))}
.hero__scroll{position:absolute; z-index:2; left:50%; bottom:26px; width:22px; height:36px; margin-left:-11px; border:1.5px solid rgba(255,255,255,.35); border-radius:12px}
.hero__scroll::after{content:""; position:absolute; left:50%; top:7px; width:3px; height:7px; margin-left:-1.5px; border-radius:2px; background:#fff; animation:wheel 1.8s ease-in-out infinite}
@keyframes wheel{0%{opacity:0; transform:translateY(-3px)}40%{opacity:1}100%{opacity:0; transform:translateY(10px)}}
@media(max-width:760px){
  .hero__copy{margin-left:0; text-align:left}
}

/* ---------- 翻滚数字 odometer（site.js 生成内部结构） ---------- */
.odo{display:inline-flex; align-items:flex-end; flex-wrap:wrap; justify-content:inherit; font-family:"Sora",sans-serif; font-weight:700; font-size:clamp(48px,9vw,104px);
  line-height:1; letter-spacing:-.02em; color:#eef4ff; filter:drop-shadow(0 6px 36px rgba(110,165,255,.5)); font-variant-numeric:tabular-nums; vertical-align:bottom}
.odo .reel{display:inline-block; height:1em; overflow:hidden}
.odo .col{display:flex; flex-direction:column}   /* 位移由 site.js 写成 % （1 格 = 5%），不依赖字号 */
.odo .digit{height:1em; line-height:1em; text-align:center}
.odo .sym{display:inline-block}
.odo .unit{font-family:var(--f-head); font-size:.42em; font-weight:600; margin-left:.12em; margin-bottom:.12em; color:#bcd4ff; letter-spacing:0; white-space:nowrap}
.odo-wrap{display:block; margin:18px 0 14px}

/* ---------- 非首页矮页头 ---------- */
.page-hero{position:relative; overflow:hidden; background:var(--bg-2); padding-top:calc(var(--head-h) + 40px); padding-bottom:64px; text-align:center; min-height:300px; display:flex; align-items:center}
.page-hero__bg{position:absolute; inset:0; z-index:0; overflow:hidden}
.page-hero__bg .blob{--s:70px; opacity:.6}
.page-hero__bg .b1{width:40vw; height:40vw; top:-40%; left:5%}
.page-hero__bg .b2{width:34vw; height:34vw; bottom:-50%; right:8%}
.page-hero::after{content:""; position:absolute; left:0; right:0; bottom:0; height:90px; z-index:1; background:linear-gradient(180deg,transparent,var(--bg))}
.page-hero__in{position:relative; z-index:2}
.page-hero__title{font-family:var(--f-head); font-weight:700; font-size:clamp(30px,5vw,54px); line-height:1.12; letter-spacing:-.015em; margin:0; color:#fff}
.page-hero .eyebrow{color:var(--accent-soft)}

/* ---------- 图文并排 .media ---------- */
.media{display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.08fr); gap:clamp(28px,4.5vw,60px); align-items:start}
.media--rev .media__img{order:2}
.media__img{position:relative; border-radius:var(--radius); overflow:hidden; border:1px solid var(--hairline); box-shadow:var(--shadow); background:var(--surface)}
.media__img img{width:100%; height:100%; object-fit:cover; transition:transform 1.2s var(--ease)}
.media__img:hover img{transform:scale(1.04)}
.media__img::after{content:""; position:absolute; inset:0; pointer-events:none; background:radial-gradient(120% 80% at 85% 0%,rgba(127,182,255,.18),transparent 55%)}
@media(max-width:820px){.media{grid-template-columns:1fr} .media--rev .media__img{order:0}}

/* ---------- 图上文下卡片 .card-img ---------- */
.card-img{position:relative; display:flex; flex-direction:column; background:var(--surface); border:1px solid var(--hairline); border-radius:var(--radius); overflow:hidden;
  transition:transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s; text-decoration:none; color:inherit; height:100%}
.card-img::before{content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none; z-index:2; opacity:0; transition:opacity .45s;
  background:radial-gradient(90% 60% at 50% 0%,rgba(41,151,255,.16),transparent 60%)}
.card-img:hover{transform:translateY(-8px); box-shadow:0 30px 70px -24px rgba(0,0,0,.85), 0 0 0 1px rgba(41,151,255,.35); border-color:rgba(41,151,255,.55)}
.card-img:hover::before{opacity:1}
.card-img__media{position:relative; aspect-ratio:var(--ar,16/10); overflow:hidden; background:#0d0d10}
.card-img__media img{width:100%; height:100%; object-fit:cover; transition:transform 1.1s var(--ease)}
.card-img:hover .card-img__media img{transform:scale(1.06)}
.card-img__body{padding:24px 24px 28px; flex:1}
.card-img__title{font-family:var(--f-head); font-weight:600; font-size:19px; line-height:1.35; margin:0 0 12px; color:#fff}
.card-img__text{margin:0; font-size:14.5px; line-height:1.8; color:var(--muted)}

/* ---------- 毛玻璃表面 ---------- */
.glass{background:rgba(28,28,30,.55); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); border:1px solid rgba(255,255,255,.08); border-radius:20px}

/* ---------- 视频占位 .vph ---------- */
.vph{position:relative; width:100%; aspect-ratio:var(--ar,16/9); border-radius:18px; overflow:hidden; border:1px solid rgba(255,255,255,.12);
  background:radial-gradient(80% 70% at 30% 20%,rgba(41,151,255,.22),transparent 60%), radial-gradient(70% 60% at 80% 90%,rgba(90,70,224,.22),transparent 60%), linear-gradient(160deg,#0b0f1c,#05060a);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:12px; color:rgba(255,255,255,.55)}
.vph::after{content:""; position:absolute; inset:0; background:linear-gradient(115deg,transparent 40%,rgba(140,185,255,.08) 50%,transparent 60%); transform:translateX(-60%); animation:sweep 8s ease-in-out infinite; pointer-events:none}
.vph__icon{width:54px; height:54px; border-radius:50%; border:1px solid rgba(255,255,255,.35); background:rgba(255,255,255,.06); display:grid; place-items:center; position:relative}
.vph__icon::before{content:""; margin-left:4px; border-style:solid; border-width:9px 0 9px 15px; border-color:transparent transparent transparent rgba(255,255,255,.85)}
.vph__label{font-size:12px; letter-spacing:.05em; padding:0 12px; text-align:center; word-break:break-all}

/* ---------- 页脚 ---------- */
.site-foot{position:relative; overflow:hidden; background:var(--bg-2); color:#f5f7fa; margin-top:80px; padding-block:56px 44px; border-top:1px solid rgba(255,255,255,.06)}
.site-foot__blob{position:absolute; width:50vw; height:50vw; border-radius:50%; opacity:.25; --c:27,99,200; --s:90px; top:-30%; right:-12%; pointer-events:none;
  box-sizing:content-box; border:calc(var(--s)*2) solid transparent; margin:calc(var(--s)*-2) calc(var(--s)*-2) 0 0; background-origin:border-box;
  background-image:radial-gradient(closest-side,rgba(var(--c),1) calc(100% - var(--s)*4),rgba(var(--c),.84) calc(100% - var(--s)*3),rgba(var(--c),.5) calc(100% - var(--s)*2),rgba(var(--c),.16) calc(100% - var(--s)),rgba(var(--c),0))}
.site-foot__blob.b-2{--c:90,70,224; left:-14%; right:auto; top:auto; bottom:-60%; margin:0 0 calc(var(--s)*-2) calc(var(--s)*-2); opacity:.18}
.site-foot__in{position:relative; z-index:1; text-align:center}
.foot-brand{display:inline-flex; align-items:center; gap:10px; margin:0 auto 22px; color:#fff; text-decoration:none; opacity:.92; transition:opacity .25s}
.foot-brand:hover{opacity:1}
.foot-brand svg{height:26px; width:auto; display:block; overflow:visible; filter:drop-shadow(0 0 6px rgba(81,168,223,.25))}
.foot-brand svg .m1{stroke:rgba(120,180,240,.55); stroke-width:1px; vector-effect:non-scaling-stroke}
.foot-brand span{font:700 15px/1 "Sora",var(--f-head); letter-spacing:.06em}
.site-foot__rule{height:1px; background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent); margin:0 auto 22px; max-width:640px}
.site-foot__cc{font-size:13px; color:rgba(255,255,255,.5); margin:0; letter-spacing:.02em}

/* ---------- 动效 ---------- */
.reveal{opacity:0; transform:translateY(22px)}
body.ready .reveal{animation:rise .9s var(--ease) forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.18s}.d3{animation-delay:.32s}.d4{animation-delay:.46s}.d5{animation-delay:.6s}
@keyframes rise{to{opacity:1; transform:none}}
.io{opacity:0; transform:translateY(28px); transition:opacity .8s ease, transform .8s var(--ease); transition-delay:var(--d,0s)}
.io.in{opacity:1; transform:none}
.no-js .io,.no-js .reveal{opacity:1; transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important; transition:none!important; scroll-behavior:auto!important}
  .reveal,.io{opacity:1!important; transform:none!important}
  .sweep{display:none}
}

/* 空文案自动隐藏（某语言下旧站没有该元素时，字典里写 "" 即可） */
.eyebrow:empty,.hero__line:empty{display:none}
/* 英文不两端对齐（避免词间距拉伸）；图文并排时图片在宽屏随滚动停靠 */
:lang(en) .prose p{text-align:left}
@media(min-width:821px){.media__img{position:sticky; top:calc(var(--head-h) + 24px)}}
/* 上下两张图的图片列（首页“关于我们”）：与右侧文字列等高，第二张填充剩余高度；不 sticky */
.media__stack{display:flex; flex-direction:column; gap:clamp(14px,1.6vw,20px); min-width:0}
.media__stack .media__img{position:relative; top:auto}
@media(min-width:821px){.media--stretch{align-items:stretch}}

/* 首页：Hero 底部光晕自然过渡进「关于我们」，减少中间留黑 */
.about{padding-top:56px; isolation:isolate}
.about::before{content:""; position:absolute; left:0; right:0; top:0; height:520px; z-index:-1; pointer-events:none;
  background:
    radial-gradient(55% 60% at 28% 30%,rgba(27,99,200,.22),transparent 72%),
    radial-gradient(40% 55% at 80% 26%,rgba(90,70,224,.18),transparent 72%),
    radial-gradient(30% 45% at 56% 34%,rgba(19,163,148,.10),transparent 72%);
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 34%,#000 46%,transparent 100%);
          mask-image:linear-gradient(180deg,transparent 0,#000 34%,#000 46%,transparent 100%)}

/* ---------- 真实视频（v6.3）---------- */
.vid{position:relative; display:block; width:100%; aspect-ratio:var(--ar,16/9); border-radius:18px; overflow:hidden; border:1px solid rgba(255,255,255,.12); background:#06070d; object-fit:cover}
.tile .vid{border:0; border-radius:0}
.vid-block{margin-bottom:clamp(26px,3.6vw,40px); box-shadow:var(--shadow)}