/* 版式概念：对齐壹刻校园官网设计系统 v2.0 —— 品牌红 × 高级灰 × 大留白 × 精细排版。
   无衬线粗黑标题、红色渐变 hero、胶囊按钮、多层柔和阴影。 */
:root{
  /* 品牌红 */
  --accent:#C8102E;          /* 主红 */
  --accent-deep:#96071F;     /* 深红 */
  --accent-bright:#E4203E;   /* 亮红 */
  --accent-soft:#FDF2F4;     /* 浅红底 */
  --accent-tint:#F8DDE2;     /* 粉红 */
  --accent-ink:#ffffff;

  /* 中性色阶（对齐官网 ink 阶） */
  --bg:#FFFFFF;              /* 纯白内容区 */
  --bg-2:#F7F8FA;            /* 次级面 surface */
  --fg:#0E1014;              /* ink-900 */
  --fg-2:#434A57;            /* ink-600 次级文字 */
  --fg-3:#8A93A2;            /* ink-400 说明文字 */
  --line:#E5E8ED;            /* 细线 */
  --frame:#101820;           /* 图片底色 */
  --sh-1:0 1px 2px rgba(14,16,20,.04),0 2px 8px rgba(14,16,20,.03);
  --sh-2:0 2px 6px rgba(14,16,20,.05),0 10px 24px rgba(14,16,20,.05);
  --sh-red:0 6px 20px rgba(200,16,46,.24);
  --sh-red-lg:0 12px 36px rgba(200,16,46,.28);

  /* 字体（对齐官网） */
  --display:"PingFang SC","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --num:"SF Pro Display",-apple-system,"Helvetica Neue",Arial,sans-serif;
  --body:"PingFang SC","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#101114; --bg-2:#17181c; --fg:#EDEFF3; --fg-2:#B4BBC6; --fg-3:#7A828F;
    --line:#2A2D34; --accent:#E8586E; --accent-deep:#C73A50; --accent-bright:#F07187;
    --accent-soft:#241418; --accent-tint:#3A1D24; --accent-ink:#101114; --frame:#08090c;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#101114; --bg-2:#17181c; --fg:#EDEFF3; --fg-2:#B4BBC6; --fg-3:#7A828F;
  --line:#2A2D34; --accent:#E8586E; --accent-deep:#C73A50; --accent-bright:#F07187;
  --accent-soft:#241418; --accent-tint:#3A1D24; --accent-ink:#101114; --frame:#08090c;
  color-scheme:dark;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--body);font-size:16px;line-height:1.75;font-weight:400;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);font-weight:800;line-height:1.22;margin:0;text-wrap:balance;letter-spacing:-.02em;color:var(--fg)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;background:var(--fg);color:var(--bg);padding:8px 12px}
.skip:focus{left:16px;z-index:50}

.wrap{max-width:1180px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.section{padding-block:clamp(64px,10vw,128px);border-top:1px solid var(--line)}
.kicker{font-size:12px;letter-spacing:.18em;color:var(--fg-3);text-transform:uppercase;font-variant-numeric:tabular-nums;font-weight:700}
/* 小节眉标：官网 eyebrow 风格 —— 红字 + 前置红渐变短横线 */
.kicker-cn{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:700;text-transform:uppercase}
.kicker-cn::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-bright));flex:none}
.lead{color:var(--fg-2);font-size:17px;max-width:34em}
.h2{font-size:clamp(28px,4.2vw,46px);letter-spacing:-.028em}
.h3{font-size:clamp(20px,2.4vw,26px);letter-spacing:-.016em}
.head{display:grid;gap:18px;margin-bottom:clamp(36px,5vw,64px);max-width:44em}
.head .lead{margin-top:4px}
.cap{font-size:13px;color:var(--fg-3);letter-spacing:.04em;margin-top:12px;line-height:1.6}
.rule{height:1px;background:var(--line)}
.num{font-family:var(--num);font-size:13px;color:var(--accent);letter-spacing:.06em;font-variant-numeric:tabular-nums;font-weight:700}

/* 按钮：官网胶囊体系 —— 主按钮红底白字 + 红色阴影 + hover 上浮 */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 26px;border:1.5px solid transparent;border-radius:999px;font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;transition:transform .25s cubic-bezier(.22,.61,.36,1),box-shadow .25s cubic-bezier(.22,.61,.36,1),background .2s,color .2s,border-color .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn.fill{background:var(--accent);color:#fff;box-shadow:var(--sh-red)}
.btn.fill:hover{background:var(--accent-deep);box-shadow:var(--sh-red-lg)}
.btn:not(.fill):not(.quiet):not(.card .btn){border-color:var(--line);color:var(--fg);background:var(--bg)}
.btn:not(.fill):not(.quiet):not(.card .btn):hover{border-color:var(--accent);color:var(--accent)}
.btn.quiet{border-color:var(--line);color:var(--fg-2);background:var(--bg)}
.btn.quiet:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);box-shadow:var(--sh-1)}
.btn svg{width:14px;height:14px}

/* 顶栏：白底毛玻璃，导航 hover 红 */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand img{width:30px;height:30px;border-radius:8px}
.brand b{display:block;font-size:14px;font-weight:800;line-height:1.2;letter-spacing:-.01em}
.brand span{display:block;font-size:12px;color:var(--fg-3);line-height:1.3;letter-spacing:.04em}
.nav{display:flex;gap:26px;font-size:14px;color:var(--fg-2);font-weight:500}
.nav a{padding:6px 10px;border-radius:999px;transition:color .18s,background .18s}
.nav a:hover{color:var(--accent);background:var(--accent-soft)}
.nav a.cta{color:var(--accent);font-weight:700}
@media (max-width:760px){.nav a:not(.cta){display:none}}

/* 首屏：官网式红渐变 hero —— 网格纹理 + 光晕 + 白字 */
.hero{position:relative;overflow:hidden;isolation:isolate;background:linear-gradient(140deg,#8E0620 0%,var(--accent) 42%,#E11D3C 100%);color:#fff;padding-block:clamp(56px,8vw,112px) clamp(40px,6vw,72px)}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse 55% 70% at 88% 12%,rgba(255,255,255,.20),transparent 62%),radial-gradient(ellipse 45% 55% at 6% 96%,rgba(255,255,255,.13),transparent 62%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:62px 62px;-webkit-mask-image:radial-gradient(ellipse 80% 90% at 30% 40%,#000,transparent 78%);mask-image:radial-gradient(ellipse 80% 90% at 30% 40%,#000,transparent 78%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,6vw,96px);align-items:end}
.hero .kicker-cn{color:#FFC7D1}
.hero .kicker-cn::before{background:linear-gradient(90deg,#FFC7D1,rgba(255,199,209,.2))}
.hero h1{font-size:clamp(40px,7vw,84px);font-weight:800;line-height:1.1;letter-spacing:-.033em;margin-top:22px;color:#fff}
.hero h1 em{font-style:normal;color:#FFD3DB}
.hero .lead{margin-top:28px;font-size:18px;max-width:28em;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.hero .btn.fill{background:#fff;color:var(--accent);box-shadow:0 6px 20px rgba(0,0,0,.16)}
.hero .btn.fill:hover{background:#FFF;box-shadow:0 12px 30px rgba(0,0,0,.22)}
/* hero 内次按钮：透明白边幽灵按钮（需高于通用 .btn 白底规则的特异性） */
.hero .hero-actions .btn:not(.fill):not(.quiet):not(.card .btn){border-color:rgba(255,255,255,.34);color:#fff;background:transparent;box-shadow:none}
.hero .hero-actions .btn:not(.fill):not(.quiet):not(.card .btn):hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);color:#fff}
.partners{display:flex;flex-direction:column;gap:14px;font-size:14px;color:rgba(255,255,255,.82);padding-bottom:6px}
.partners .x{font-family:var(--display);color:rgba(255,255,255,.55)}
.partners dl{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin:0}
.partners dt{color:rgba(255,255,255,.72);font-size:12px;letter-spacing:.14em;padding-top:3px}
.partners dd{margin:0}
.hero-media{margin-top:clamp(40px,6vw,72px)}
.figure{position:relative;background:var(--frame);border-radius:16px;overflow:hidden;box-shadow:var(--sh-2)}
.figure img{width:100%;height:100%;object-fit:cover}
.figure.ratio-21{aspect-ratio:21/9}
.figure.ratio-16{aspect-ratio:16/9}
.figure.ratio-4{aspect-ratio:4/3}
.figure .tag{position:absolute;left:16px;bottom:14px;font-size:12px;letter-spacing:.1em;color:#fff;background:rgba(14,16,20,.55);padding:6px 10px;border-radius:8px;backdrop-filter:blur(6px)}
/* strip：官网 hero-stats 玻璃卡片质感 */
.strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:18px;overflow:hidden;margin-top:clamp(40px,6vw,72px)}
.strip li{padding:24px 26px;display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:baseline;background:rgba(255,255,255,.07);backdrop-filter:blur(8px)}
.strip li + li{border-left:1px solid rgba(255,255,255,.2)}
.strip b{font-family:var(--num);font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
.strip span{font-size:15px;color:rgba(255,255,255,.85)}
.strip small{display:block;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.1em;margin-top:4px}
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .strip{grid-template-columns:1fr}
  .strip li + li{border-left:0;border-top:1px solid rgba(255,255,255,.2)}
}

/* 高斯演示 */
.show{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,5vw,72px);align-items:start}
.modes{border-top:1px solid var(--line)}
.modes li{display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line)}
.modes h4{font-size:17px;font-weight:700;letter-spacing:-.01em}
.modes p{font-size:14px;color:var(--fg-2);margin-top:4px;line-height:1.6}
.modes .en{font-size:12px;letter-spacing:.12em;color:var(--fg-3);text-transform:uppercase}
.modes li:nth-child(4) h4{color:var(--accent)}
.show-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;margin-top:28px}
.show-foot .cap,.foot-cap{margin:0}
@media (max-width:860px){.show{grid-template-columns:1fr}}

/* 核心能力 */
.caps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.cap-item{padding:36px 28px 40px 0;display:grid;gap:14px;align-content:start}
.cap-item + .cap-item{border-left:1px solid var(--line);padding-left:28px}
.cap-item .big{font-family:var(--num);font-size:clamp(44px,5vw,64px);line-height:1;font-weight:800;letter-spacing:-.035em;color:var(--accent)}
.cap-item .big small{font-family:var(--body);font-size:12px;letter-spacing:.14em;color:var(--fg-3);display:block;margin-top:8px;text-transform:uppercase;font-weight:600}
.cap-item h3{font-size:22px;margin-top:6px;letter-spacing:-.016em}
.cap-item p{color:var(--fg-2);font-size:15px}
.cap-item ul{display:grid;gap:8px;margin-top:6px}
.cap-item li{font-size:14px;color:var(--fg-2);padding-left:16px;position:relative}
.cap-item li::before{content:"";position:absolute;left:0;top:.75em;width:7px;height:2px;border-radius:2px;background:var(--accent)}
.cap-item.lead-cap h3{color:var(--accent)}
@media (max-width:860px){
  .caps{grid-template-columns:1fr}
  .cap-item{padding:28px 0}
  .cap-item + .cap-item{border-left:0;border-top:1px solid var(--line);padding-left:0}
}

/* 应用方向 */
.markets{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.markets li{padding:26px 24px 30px 0;display:grid;gap:10px;align-content:start}
.markets li + li{border-left:1px solid var(--line);padding-left:24px}
.markets h3{font-size:19px;letter-spacing:-.014em}
.markets p{font-size:14px;color:var(--fg-2)}
.feature{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:clamp(32px,5vw,72px);align-items:center;margin-top:clamp(40px,6vw,72px)}
.feature .kicker-cn{margin-bottom:14px;display:inline-flex}
.feature h3{font-size:clamp(26px,3vw,34px);letter-spacing:-.022em}
.feature p{color:var(--fg-2);margin-top:18px;max-width:30em}
.feature dl{display:grid;grid-template-columns:auto 1fr;gap:12px 20px;margin:26px 0 0;font-size:14px}
.feature dt{color:var(--fg-3);letter-spacing:.12em;font-size:12px;padding-top:4px;white-space:nowrap}
.feature dd{margin:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:13px;color:var(--fg-2);background:var(--bg)}
.note{font-size:13px;color:var(--fg-3);margin-top:28px;max-width:40em}
@media (max-width:980px){.markets{grid-template-columns:1fr 1fr}.markets li:nth-child(3){border-left:0;padding-left:0}.markets li:nth-child(n+3){border-top:1px solid var(--line)}}
@media (max-width:860px){.feature{grid-template-columns:1fr}}
@media (max-width:560px){.markets{grid-template-columns:1fr}.markets li{padding:22px 0}.markets li + li{border-left:0;border-top:1px solid var(--line);padding-left:0}}

/* 案例 */
.cases{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,48px) clamp(24px,4vw,40px)}
.case .figure{transition:transform .35s cubic-bezier(.22,.61,.36,1),box-shadow .35s}
.case:hover .figure{transform:translateY(-4px);box-shadow:var(--sh-red)}
.case:hover .figure img{transform:scale(1.02)}
.case .figure img{transition:transform .6s}
.case .meta{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-top:16px;font-size:12px;letter-spacing:.12em;color:var(--fg-3)}
.case h3{font-size:21px;margin-top:8px;letter-spacing:-.016em}
.case p{font-size:14px;color:var(--fg-2);margin-top:6px}
@media (max-width:640px){.cases{grid-template-columns:1fr}}

/* 采集棚 */
.studio{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(32px,5vw,80px);align-items:start}
.studio h3{font-size:clamp(24px,2.8vw,30px);letter-spacing:-.02em}
.studio > div > p{color:var(--fg-2);margin-top:18px;max-width:30em}
.steps{margin-top:32px;border-top:1px solid var(--line)}
.steps li{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);align-items:baseline}
.steps b{font-weight:700;font-size:16px;letter-spacing:-.01em}
.steps span{color:var(--fg-2);font-size:14px;margin-left:10px}
@media (max-width:860px){.studio{grid-template-columns:1fr}}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;border-top:1px solid var(--line);counter-reset:f}
.flow li{padding:28px 20px 32px 0;display:grid;gap:10px;align-content:start;position:relative}
.flow li + li{border-left:1px solid var(--line);padding-left:20px}
.flow .num{font-size:13px}
.flow h3{font-size:20px;letter-spacing:-.014em}
.flow p{font-size:14px;color:var(--fg-2)}
@media (max-width:900px){.flow{grid-template-columns:1fr}.flow li{padding:18px 0;grid-template-columns:48px 1fr auto;gap:8px 14px;align-items:baseline;border-bottom:1px solid var(--line)}.flow li + li{border-left:0;padding-left:0}.flow h3{font-size:18px}.flow p{grid-column:3}}
@media (max-width:560px){.flow li{grid-template-columns:48px 1fr}.flow p{grid-column:2}}

/* 联系：官网 page-hero 式红渐变 + 白名片卡 */
.contact{position:relative;overflow:hidden;isolation:isolate;background:linear-gradient(140deg,#8E0620 0%,var(--accent) 42%,#E11D3C 100%);color:#fff;border-top:0}
.contact::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse 55% 70% at 88% 12%,rgba(255,255,255,.20),transparent 62%),radial-gradient(ellipse 45% 55% at 6% 96%,rgba(255,255,255,.13),transparent 62%)}
.contact::after{content:"";position:absolute;inset:0;z-index:-1;opacity:.5;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:62px 62px;-webkit-mask-image:radial-gradient(ellipse 80% 90% at 30% 40%,#000,transparent 78%);mask-image:radial-gradient(ellipse 80% 90% at 30% 40%,#000,transparent 78%)}
.contact-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(40px,6vw,96px);align-items:start}
.contact h2{font-size:clamp(32px,5vw,56px);color:#fff;letter-spacing:-.03em;margin-top:18px}
.contact .kicker-cn{color:#FFC7D1}
.contact .kicker-cn::before{background:linear-gradient(90deg,#FFC7D1,rgba(255,199,209,.2))}
.contact .lead{color:rgba(255,255,255,.85);margin-top:22px}
.offers{display:grid;grid-template-columns:1fr 1fr;gap:12px 32px;margin-top:40px;max-width:36em}
.offers li{font-size:15px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.88)}
/* 名片卡：白底红字（官网 btn-white 质感） */
.card{background:#fff;border:1px solid rgba(255,255,255,.6);border-radius:24px;padding:28px;display:grid;gap:22px;color:var(--fg);box-shadow:0 12px 36px rgba(0,0,0,.18)}
.card .row{display:grid;gap:6px}
.card .lab{font-size:12px;letter-spacing:.16em;color:var(--fg-3);font-weight:600}
.card .val{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.card .val a,.card .val span{font-family:var(--num);font-size:22px;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--fg);font-weight:700}
.card .val .addr{font-family:var(--body);font-size:16px;letter-spacing:0;font-weight:400}
.copy{font-size:12px;letter-spacing:.08em;border:1px solid var(--line);color:var(--fg-2);border-radius:999px;padding:6px 12px;transition:background .2s,color .2s,border-color .2s;background:var(--bg-2)}
.copy:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent-tint)}
.copy.done{background:var(--accent);border-color:var(--accent);color:#fff}
.card .btn{justify-self:start;background:var(--accent);color:#fff;box-shadow:var(--sh-red)}
.card .btn:hover{background:var(--accent-deep);box-shadow:var(--sh-red-lg)}
.card .btn + .btn{background:var(--bg-2);color:var(--fg);border-color:var(--line);box-shadow:none}
.card .btn + .btn:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent-tint)}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}.offers{grid-template-columns:1fr}}

/* 页脚 */
.foot{padding-block:40px 48px;border-top:1px solid var(--line);background:var(--bg-2)}
.foot .wrap{display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center}
.foot img{width:120px;border-radius:12px}
.foot b{display:block;font-weight:700;font-size:15px;letter-spacing:-.01em}
.foot span{display:block;font-size:13px;color:var(--fg-3);margin-top:4px;line-height:1.6}
.foot .up{width:40px;height:40px;border:1px solid var(--line);border-radius:999px;display:grid;place-items:center;color:var(--fg-2);background:var(--bg)}
.foot .up:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:640px){.foot .wrap{grid-template-columns:1fr auto}.foot img{display:none}}

/* Responsive refinements and controls */
figure{margin:0}
[hidden]{display:none!important}
html{scroll-padding-top:86px}
body{overflow-x:clip}
section[id]{scroll-margin-top:86px}
.brand img{width:36px;height:36px;border-radius:10px;flex-shrink:0}
.brand span{color:var(--fg-2);white-space:nowrap;font-size:11px}
.brand b{white-space:nowrap;font-size:15px}
.hero-media .figure img,.show .figure img,.case .figure img{object-fit:contain}
.hero-media .figure{background:#030706;box-shadow:0 24px 60px rgba(0,0,0,.28)}
.show .figure,.case .figure{background:#050a08}
.studio .figure{aspect-ratio:16/9}
.studio .figure img{object-fit:contain}
.modes li{display:block;padding:0}
.modes li:nth-child(4) h4{color:inherit}
.mode{width:100%;display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:14px;align-items:baseline;text-align:left;padding:18px 12px 18px 0;border-left:2px solid transparent;border-radius:0 10px 10px 0}
.mode:hover{background:var(--accent-soft)}
.mode[aria-selected=true]{border-left-color:var(--accent);padding-left:12px;background:var(--accent-soft)}
.mode[aria-selected=true] h4{color:var(--accent)}
.mode .num{font-family:var(--num)}
.mode .en{font-size:10px;letter-spacing:.08em}
.image-open{position:absolute;right:12px;top:12px;font-size:12px;line-height:1.4;padding:7px 12px;border:1px solid #ffffff66;border-radius:999px;color:#fff;background:#141414b3;backdrop-filter:blur(4px)}
.image-open:hover{background:var(--accent);border-color:var(--accent)}
.market-tab{display:block;text-align:left;width:100%;height:100%;padding-bottom:3px;border-radius:10px}
.market-tab[aria-selected=true] h3{color:var(--accent)}
.market-tab:hover h3{color:var(--accent)}
.market-tab p{margin-top:10px}
.video-block{margin-top:38px;border-top:1px solid var(--line);padding-top:26px;scroll-margin-top:86px}
.video-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.video-heading h3{font-size:22px;letter-spacing:-.018em}
.text-button{font-size:14px;color:var(--accent);font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px;white-space:nowrap}
.layout-link{margin-top:26px}
.video-screen{position:relative;background:#030706;border-radius:16px;overflow:hidden;box-shadow:var(--sh-2)}
.video-screen video{display:block;width:100%;height:auto;max-height:680px;object-fit:contain}
.video-label{position:absolute;top:14px;left:14px;font-size:12px;color:#fff;background:rgba(200,16,46,.88);border:1px solid #ffffff40;border-radius:8px;padding:6px 10px;pointer-events:none}
.video-chapters{display:grid;grid-template-columns:repeat(4,1fr);font-size:13px;color:var(--fg-3);gap:10px;margin-top:13px}
.video-chapters .active{color:var(--accent);font-weight:700}
.foot b{max-width:27em;line-height:1.7}
.foot .up{width:auto;padding:0 14px;border:0;font-size:12px;border-radius:0}
.foot .up svg{display:none}
.foot .up:after{content:'返回顶部';white-space:nowrap}
dialog{width:min(850px,calc(100% - 32px));max-height:90dvh;border:1px solid var(--line);border-radius:24px;padding:32px;background:var(--bg);color:var(--fg);box-shadow:0 24px 80px rgba(14,16,20,.24)}
dialog::backdrop{background:rgba(14,16,20,.55);backdrop-filter:blur(5px)}
.dialog-close{display:block;margin-left:auto;margin-bottom:16px;padding:6px 0 6px 12px;font-size:13px;color:var(--fg-2)}
.dialog-close:hover{color:var(--accent)}
#dialog-content h2{font-size:28px;margin-bottom:18px;letter-spacing:-.024em}
#dialog-content p{margin:18px 0;color:var(--fg-2);font-size:15px;line-height:1.8}
.dialog-kicker{font-size:12px;color:var(--accent);letter-spacing:.18em;display:block;margin-bottom:10px;font-weight:700;text-transform:uppercase}
.large-image{width:100%;max-height:65vh;object-fit:contain;border-radius:12px;background:var(--frame)}
.share-input{width:100%;min-width:0;padding:12px;border:1px solid var(--line);background:var(--bg-2);color:var(--fg);font:inherit;font-size:13px;margin:8px 0 20px;border-radius:10px}
.share-input:focus{outline:2px solid var(--accent);outline-offset:1px}
#toast{position:fixed;z-index:60;bottom:calc(24px + env(safe-area-inset-bottom,0px));left:50%;transform:translate(-50%,10px);opacity:0;pointer-events:none;max-width:calc(100% - 32px);width:max-content;border-radius:999px;background:var(--accent);color:#fff;font-size:14px;font-weight:500;padding:12px 22px;box-shadow:var(--sh-red-lg);transition:opacity .2s,transform .2s}
#toast.visible,#toast.toast-visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.nav{gap:14px;font-size:13px}}
@media(max-width:900px){.nav a:not(.cta){display:none}}
@media(max-width:640px){
 .top .wrap{gap:10px;height:74px}.nav{flex-shrink:0;font-size:12px}.brand{gap:9px}.brand b{font-size:14px}.brand span{font-size:10px;letter-spacing:0}.brand img{width:33px;height:33px}
 .hero{padding-top:44px}.hero .kicker-cn{font-size:11px;letter-spacing:.12em}.hero h1{font-size:clamp(36px,10vw,50px);line-height:1.22}.hero .lead{font-size:16px;margin-top:22px}.hero-actions{margin-top:28px}.partners{font-size:13px}.hero-grid{gap:32px}.partners dl{gap:7px 14px}
 .hero-media .figure{aspect-ratio:4/3}.figure .tag{font-size:10px;left:10px;bottom:10px;padding:5px 8px}.strip li{padding:17px 18px}.strip b{font-size:27px}.strip span{font-size:14px}
 .section{padding-block:62px}.lead{font-size:16px}.head{margin-bottom:30px}.h2{font-size:30px;line-height:1.36}.show{gap:22px}.modes .mode{padding-top:15px;padding-bottom:15px;gap:9px;grid-template-columns:24px minmax(0,1fr) auto}.modes h4{font-size:18px}.modes p{font-size:13px}.modes .en{font-size:9px;letter-spacing:.02em}.show-foot{margin-top:24px;gap:12px}.show-foot .cap{font-size:12px}
 .markets{grid-template-columns:1fr 1fr}.markets li{padding:20px 12px 20px 0}.markets li+li{border-top:0;border-left:1px solid var(--line);padding-left:12px}.markets li:nth-child(3){border-left:0;padding-left:0}.markets li:nth-child(n+3){border-top:1px solid var(--line)}.markets h3{font-size:17px;line-height:1.5}.markets p{font-size:12px}.feature{margin-top:30px;gap:25px}.feature .figure{aspect-ratio:8/5}.feature h3{font-size:27px;line-height:1.4}.feature p{font-size:15px}.feature dl{grid-template-columns:1fr;gap:6px}.feature dd+dt{margin-top:10px}.chips{gap:6px}.chips span{padding:4px 10px;font-size:12px}
 .case .meta{font-size:11px;letter-spacing:.04em}.case h3{font-size:23px}.steps li{grid-template-columns:32px 1fr;gap:10px}.steps span:not(.num){display:block;margin:4px 0 0;font-size:13px}.steps .num{font-size:13px}.flow li{grid-template-columns:32px 1fr}
 .contact h2{font-size:31px;line-height:1.36}.card{padding:24px 20px;gap:22px;border-radius:18px}.card .val a,.card .val span{font-size:20px}.card .val .addr{font-size:15px}.card .btn{font-size:14px;padding:12px 17px}.foot .wrap{gap:16px;grid-template-columns:minmax(0,1fr) auto}.foot b{font-size:13px}.foot span{font-size:11px}.foot .up{padding:0;font-size:11px}
 .video-heading{align-items:flex-start}.video-heading h3{font-size:19px}.video-heading .text-button{font-size:12px}.video-chapters{grid-template-columns:1fr 1fr;font-size:12px}.video-label{top:10px;left:10px;padding:4px 7px;font-size:10px}.video-block{margin-top:28px}
 dialog{padding:20px;border-radius:18px}#dialog-content h2{font-size:23px}.large-image{max-height:60vh}
}
@media(max-width:360px){.wrap{padding-left:16px;padding-right:16px}.brand img{width:30px;height:30px}.brand b{font-size:13px}.brand span{font-size:9px}.nav{font-size:11px}.hero h1{font-size:35px}.hero-actions .btn{font-size:14px;padding:12px 18px}.modes .en{font-size:8px}.modes .mode{gap:7px}.contact h2{font-size:28px}.foot .up{font-size:10px}}

/* Contact owner: qualifications and professional focus are presented separately. */
.contact-person{padding-bottom:25px;border-bottom:1px solid var(--line)}
.person-role{font-size:12px;letter-spacing:.16em;color:var(--fg-3);font-weight:600}
.contact-person h3{font-family:var(--display);font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.4;color:var(--fg);margin:12px 0 17px}
.contact-person h3>span{display:inline-block;margin-left:14px;font-family:var(--body);font-size:15px;letter-spacing:.1em;font-weight:400;color:var(--fg-3)}
.person-credentials{display:grid;gap:6px;color:var(--fg-2);font-size:14px;line-height:1.65}
.person-credentials li>span{font-size:12px;color:var(--fg-3)}
.person-focus{margin-top:17px;color:var(--accent);font-size:13px;line-height:1.85;letter-spacing:.02em;font-weight:500}
@media(max-width:640px){.contact-person{padding-bottom:23px}.contact-person h3{font-size:32px;margin-top:10px;margin-bottom:15px}.person-role{font-size:11px}.person-credentials{font-size:14px}.person-focus{font-size:12px;letter-spacing:0}}