/* ============================================================
   先锋数科 · AINSwift — 共享设计系统
   颜色 / 字体 / 间距 / 组件 / 响应式
   ============================================================ */

:root{
  /* 品牌色阶 */
  --navy-950:#050D19;
  --navy-900:#0A1626;
  --navy-850:#0D1E33;
  --navy-800:#122845;
  --navy-700:#1B3A61;
  --blue:#2F6FDB;
  --blue-deep:#1E4FA8;
  --blue-soft:#EDF3FD;
  --gold:#C7A65B;
  --gold-deep:#A8873F;
  --gold-soft:#F7F1E3;

  /* 中性色 */
  --ink:#0C1622;
  --body:#3D4A5C;
  --muted:#7B8899;
  --line:#E5EAF1;
  --line-soft:#EFF2F7;
  --bg:#F7F9FC;
  --white:#FFFFFF;

  /* 阴影 / 圆角 */
  --shadow-xs:0 1px 2px rgba(10,22,38,.05);
  --shadow-sm:0 2px 6px rgba(10,22,38,.05), 0 8px 24px rgba(10,22,38,.05);
  --shadow-md:0 6px 18px rgba(10,22,38,.07), 0 20px 50px rgba(10,22,38,.09);
  --shadow-lg:0 20px 60px rgba(6,14,26,.18);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:20px;

  /* 版式 */
  --font-sans:"Segoe UI Variable Text","Segoe UI",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-display:"Segoe UI Variable Display","Segoe UI Semibold","Segoe UI",-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;

  --maxw:1180px;
  --gutter:5vw;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}

h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.25;letter-spacing:-.01em}
strong{color:var(--ink);font-weight:600}

::selection{background:var(--navy-800);color:#fff}

/* ---------- 通用容器 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(64px,8vw,112px) 0}
.section--tight{padding:clamp(48px,6vw,80px) 0}
.section--paper{background:var(--white)}
.section--navy{background:linear-gradient(160deg,var(--navy-950),var(--navy-850) 55%,var(--navy-900));color:#C6D2E2}
.section--navy h2,.section--navy h3,.section--navy strong{color:#fff}

/* ---------- 标题组 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold-deep);
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold);opacity:.85}
.section--navy .eyebrow{color:var(--gold)}

.head{text-align:center;max-width:760px;margin:0 auto clamp(36px,5vw,60px)}
.head h2{font-size:clamp(25px,3.1vw,36px);font-weight:600;margin:14px 0 0}
.head p{margin-top:16px;font-size:16px;color:var(--muted)}
.section--navy .head p{color:#93A5BC}
.head--left{text-align:left;margin-left:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 30px;border-radius:999px;
  font-family:var(--font-display);font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:linear-gradient(135deg,var(--navy-800),var(--navy-700));color:#fff;box-shadow:0 8px 22px rgba(11,32,64,.24)}
.btn--primary:hover{box-shadow:0 12px 30px rgba(11,32,64,.32)}
.btn--blue{background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;box-shadow:0 8px 22px rgba(47,111,219,.28)}
.btn--blue:hover{box-shadow:0 12px 30px rgba(47,111,219,.36)}
.btn--ghost{border-color:rgba(255,255,255,.34);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--navy-900);border-color:#fff}
.btn--line{border-color:var(--line);color:var(--ink);background:#fff}
.btn--line:hover{border-color:var(--navy-800);box-shadow:var(--shadow-sm)}
.btn--gold{border-color:var(--gold);color:var(--gold);background:transparent}
.btn--gold:hover{background:var(--gold);color:var(--navy-950);border-color:var(--gold)}
.btn__arrow{transition:transform .3s var(--ease)}
.btn:hover .btn__arrow{transform:translateX(4px)}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,20,36,.88);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .35s var(--ease),background .35s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(5,13,25,.35);background:rgba(8,20,36,.96)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{height:34px;width:auto}
.brand__name{font-family:var(--font-display);font-size:19px;font-weight:600;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand__name em{font-style:normal;color:var(--gold)}

.nav{display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;padding:9px 14px;border-radius:999px;white-space:nowrap;
  font-size:14.5px;color:#B9C7D9;transition:color .25s var(--ease),background .25s var(--ease);
}
.nav__link:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav__link.is-active{color:#fff}
.nav__link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--gold);
}
.nav__sep{width:1px;height:22px;background:rgba(255,255,255,.16);margin:0 6px}
.nav__lang{
  padding:7px 16px;border:1px solid rgba(255,255,255,.3);border-radius:999px;white-space:nowrap;
  font-size:13.5px;color:#D6E0EC;transition:.25s var(--ease);
}
.nav__lang:hover{background:#fff;color:var(--navy-900);border-color:#fff}
.nav__dbs{
  padding:7px 16px;border:1px solid rgba(199,166,91,.55);border-radius:999px;white-space:nowrap;
  font-size:13.5px;color:var(--gold);display:inline-flex;align-items:center;gap:7px;transition:.25s var(--ease);
}
.nav__dbs:hover{background:var(--gold);color:var(--navy-950);border-color:var(--gold)}
.nav__dbs.is-active{background:var(--gold);color:var(--navy-950);border-color:var(--gold)}
.nav__dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.8}

.nav-toggle{display:none;width:42px;height:42px;border:1px solid rgba(255,255,255,.22);border-radius:10px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:1.5px;background:#fff;position:relative;transition:.3s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:#fff;transition:.3s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--navy-950),var(--navy-900));
  color:#fff;
}
.hero__media{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(199,166,91,.20), transparent 58%),
    linear-gradient(180deg,rgba(5,13,25,.74),rgba(5,13,25,.90)),
    url('hero-bg.jpg') center/cover no-repeat;
}
.hero__inner{position:relative;z-index:2;padding:clamp(78px,10vw,140px) 0 clamp(70px,9vw,120px)}
.hero__center{text-align:center;max-width:900px;margin:0 auto}
.hero .eyebrow{color:var(--gold)}
.hero__title{font-size:clamp(30px,5vw,52px);font-weight:600;color:#fff;letter-spacing:-.02em;margin:20px 0 0}
.hero__title .underline{position:relative;white-space:nowrap}
.hero__title .underline::after{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:.09em;
  background:linear-gradient(90deg,var(--gold),rgba(199,166,91,.15));border-radius:2px;
}
.hero__sub{
  margin-top:18px;font-family:var(--font-display);font-size:clamp(12px,1.3vw,14px);
  letter-spacing:.26em;text-transform:uppercase;color:#8FA3BC;
}
.hero__lead{margin-top:26px;font-size:clamp(16px,1.6vw,19px);color:#C3D0E0;max-width:720px;margin-left:auto;margin-right:auto}
.hero__actions{margin-top:38px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero__note{margin-top:18px;font-size:12.5px;color:#7B8CA4;letter-spacing:.04em}

.pillars{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.1);
  background:rgba(5,13,25,.35);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.pillar{padding:26px 30px;border-right:1px solid rgba(255,255,255,.08)}
.pillar:last-child{border-right:none}
.pillar__k{font-family:var(--font-display);font-size:15px;color:#fff;font-weight:600}
.pillar__v{margin-top:6px;font-size:13px;color:#8FA3BC;letter-spacing:.02em}

/* ---------- 关于我们（分栏） ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,72px);align-items:start}
.split__aside{position:sticky;top:112px}
.split__aside h2{font-size:clamp(25px,3vw,34px);font-weight:600;margin:16px 0 0}
.split__aside p{margin-top:18px;color:var(--muted)}
.facts{margin-top:28px;display:grid;gap:14px}
.fact{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--body)}
.fact__dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--gold);margin-top:10px}

.prose{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(28px,4vw,52px);box-shadow:var(--shadow-sm);
}
.prose p+p{margin-top:20px}
.prose p{font-size:16px;line-height:1.95}
.prose .lead{font-size:17.5px;color:var(--ink);font-weight:500}

/* ---------- 业务卡片 ---------- */
.biz{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.biz__item{
  grid-column:span 6;position:relative;overflow:hidden;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 32px;box-shadow:var(--shadow-xs);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.biz__item:nth-child(n+3){grid-column:span 4;padding:30px 26px}
.biz__item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--navy-800),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);
}
.biz__item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D8E0EB}
.biz__item:hover::before{transform:scaleX(1)}
.biz__idx{font-family:var(--font-display);font-size:12px;letter-spacing:.18em;color:var(--gold-deep)}
.biz__item h3{margin-top:12px;font-size:18px;font-weight:600}
.biz__item:nth-child(n+3) h3{font-size:16.5px}
.biz__item p{margin-top:12px;font-size:14.8px;line-height:1.8;color:var(--body)}

/* ---------- DBST 合作伙伴 ---------- */
.biz--ptn .biz__item{grid-column:span 3}
.biz__tag{
  display:inline-block;margin-top:16px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(199,166,91,.45);background:rgba(199,166,91,.08);
  font-size:12.5px;letter-spacing:.02em;color:var(--gold-deep);
}

/* ---------- Ainswift 模型（深色） ---------- */
.model{display:grid;gap:clamp(28px,4vw,52px)}
.model__head{max-width:720px}
.model__head h2{font-size:clamp(25px,3vw,34px);font-weight:600;margin:14px 0 0}
.acronym{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.acr{
  position:relative;padding:30px 28px;border-radius:var(--radius);
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  transition:border-color .35s var(--ease),transform .35s var(--ease),background .35s var(--ease);
}
.acr:hover{transform:translateY(-4px);border-color:rgba(199,166,91,.55);background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03))}
.acr__letters{font-family:var(--font-display);font-size:clamp(28px,3.6vw,44px);font-weight:600;color:#fff;letter-spacing:.04em;line-height:1.1}
.acr__word{margin-top:10px;font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.acr__cn{margin-top:14px;font-size:14.5px;color:#A9B8CC;line-height:1.75}
.model__cn{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.model__cnCard{padding:26px 28px;border-radius:var(--radius);border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
.model__cnCard h4{color:#fff;font-size:19px;font-weight:600}
.model__cnCard h4 span{color:var(--gold);margin-right:10px}
.model__cnCard p{margin-top:10px;font-size:14.5px;color:#9FB0C6;line-height:1.8}

/* ---------- DBS 预告带 ---------- */
.dbsband{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-800) 58%,var(--navy-700));
  border-radius:var(--radius-lg);padding:clamp(32px,4.5vw,56px);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  box-shadow:var(--shadow-md);
}
.dbsband::after{
  content:"DBS";position:absolute;right:-18px;bottom:-46px;
  font-family:var(--font-display);font-size:170px;font-weight:700;letter-spacing:.02em;
  color:rgba(255,255,255,.035);pointer-events:none;
}
.badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 14px;border-radius:999px;border:1px solid rgba(199,166,91,.5);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);
}
.badge__dot{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(199,166,91,.16)}
.dbsband h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:600;margin:16px 0 0}
.dbsband p{margin-top:14px;max-width:640px;color:#A9B8CC;font-size:15px}
.dbsband__actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- 联系 ---------- */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
.contact__card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(28px,4vw,48px);box-shadow:var(--shadow-sm);
}
.contact__card h2{font-size:clamp(24px,2.8vw,32px);font-weight:600}
.contact__card p{margin-top:14px}
.contact__list{margin-top:26px;display:grid;gap:0}
.contact__row{display:flex;gap:16px;padding:16px 0;border-top:1px solid var(--line-soft);font-size:15px}
.contact__row dt{flex:0 0 96px;color:var(--muted);font-size:13.5px;letter-spacing:.04em}
.contact__row dd{color:var(--ink);font-weight:500}
.contact__row a{color:var(--blue);border-bottom:1px solid rgba(47,111,219,.3);transition:.2s}
.contact__row a:hover{color:var(--blue-deep);border-color:var(--blue)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy-950);color:#8FA0B6;padding:clamp(52px,6vw,78px) 0 30px}
.footer__top{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px)}
.footer__brand{display:flex;align-items:center;gap:12px}
.footer__brand img{height:34px;width:auto}
.footer__brand span{font-family:var(--font-display);font-size:18px;color:#fff;font-weight:600}
.footer__blurb{margin-top:18px;font-size:14.5px;line-height:1.9;max-width:420px}
.footer__title{font-family:var(--font-display);font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#fff;margin-bottom:16px}
.footer__links{display:grid;gap:11px;font-size:14.5px}
.footer__links a{transition:color .2s}
.footer__links a:hover{color:var(--gold)}
.footer__bottom{
  margin-top:clamp(38px,5vw,58px);padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;font-size:13px;color:#6E7F96;
}
.footer__bottom a:hover{color:var(--gold)}

/* ---------- 子页首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(150deg,var(--navy-950),var(--navy-850) 60%,var(--navy-900));
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(199,166,91,.16),transparent 62%);
}
.page-hero__inner{position:relative;z-index:2;padding-top:clamp(58px,7vw,104px);padding-bottom:clamp(48px,6vw,78px)}
.crumb{font-size:13px;color:#8FA3BC;letter-spacing:.04em}
.crumb a:hover{color:var(--gold)}
.crumb span{margin:0 8px;opacity:.5}
.page-hero h1{color:#fff;font-size:clamp(28px,4vw,46px);font-weight:600;margin:18px 0 0}
.page-hero__lead{margin-top:20px;max-width:720px;font-size:clamp(15px,1.5vw,17.5px);color:#B8C6D8}

/* ---------- DBS 专用 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--gold-soft);border:1px solid #E7D9B8;border-radius:var(--radius);
  padding:22px 26px;
}
.notice__icon{flex:0 0 auto;width:34px;height:34px;border-radius:50%;background:var(--gold);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700}
.notice h4{font-size:15.5px;margin-bottom:4px}
.notice p{font-size:14px;color:#7A6A45}

.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;align-items:stretch}
.flow__node{position:relative;padding:30px 24px;text-align:center;background:var(--white);border:1px solid var(--line);border-right:none}
.flow__node:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.flow__node:last-child{border-right:1px solid var(--line);border-radius:0 var(--radius) var(--radius) 0}
.flow__node::after{
  content:"";position:absolute;right:-9px;top:50%;z-index:3;
  width:16px;height:16px;transform:translateY(-50%) rotate(45deg);
  background:var(--white);border-top:1px solid var(--line);border-right:1px solid var(--line);
}
.flow__node:last-child::after{display:none}
.flow__idx{font-family:var(--font-display);font-size:12px;letter-spacing:.18em;color:var(--gold-deep)}
.flow__name{margin-top:12px;font-family:var(--font-display);font-size:17px;font-weight:600;color:var(--ink)}
.flow__desc{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.7}

.caps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cap{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow-xs);transition:.35s var(--ease)}
.cap:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D8E0EB}
.cap h3{font-size:16.5px;font-weight:600}
.cap p{margin-top:10px;font-size:14.3px;line-height:1.8}

.roadmap{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rm{position:relative;background:var(--white);border:1px dashed #D3D9E4;border-radius:var(--radius);padding:26px 24px}
.rm__phase{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.rm h3{margin-top:10px;font-size:16.5px;font-weight:600}
.rm p{margin-top:8px;font-size:14px;color:var(--muted)}
.rm__tag{display:inline-block;margin-top:16px;font-size:12px;padding:4px 11px;border-radius:999px;background:var(--blue-soft);color:var(--blue-deep);letter-spacing:.04em}

.breadcrumb-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--muted)}
.breadcrumb-bar a{color:var(--blue);border-bottom:1px solid rgba(47,111,219,.28)}
.breadcrumb-bar a:hover{color:var(--blue-deep)}

/* ---------- 滚动揭示 ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .pillars{grid-template-columns:repeat(2,1fr)}
  .pillar:nth-child(2){border-right:none}
  .pillar:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.08)}
  .acronym{grid-template-columns:1fr}
  .caps{grid-template-columns:repeat(2,1fr)}
  .roadmap{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr 1fr}
  .biz--ptn .biz__item{grid-column:span 6}
}
@media (max-width:1080px){
  .site-header__inner{height:68px}
  .nav-toggle{display:flex}
  .nav{
    position:absolute;top:68px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px var(--gutter) 22px;
    background:rgba(8,20,36,.98);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.1);
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .4s var(--ease),opacity .3s var(--ease),padding .3s var(--ease);
  }
  body.nav-open .nav{max-height:70vh;opacity:1;pointer-events:auto}
  .nav__link{padding:12px 14px;font-size:15px}
  .nav__link.is-active::after{display:none}
  .nav__sep{width:100%;height:1px;margin:8px 0}
  .nav__lang,.nav__dbs{text-align:center;padding:12px 16px;margin-top:6px}
}
@media (max-width:860px){
  .split{grid-template-columns:1fr}
  .split__aside{position:static}
  .biz__item,.biz__item:nth-child(n+3){grid-column:span 12}
  .biz--ptn .biz__item{grid-column:span 6}
  .dbsband{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .model__cn{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow__node{border-right:1px solid var(--line);border-bottom:none;border-radius:0}
  .flow__node:first-child{border-radius:var(--radius) var(--radius) 0 0}
  .flow__node:last-child{border-bottom:1px solid var(--line);border-radius:0 0 var(--radius) var(--radius)}
  .flow__node::after{
    right:auto;left:50%;top:auto;bottom:-9px;transform:translateX(-50%) rotate(135deg);
  }
  .footer__top{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .pillars{grid-template-columns:1fr}
  .pillar{border-right:none;border-bottom:1px solid rgba(255,255,255,.08);padding:20px 24px}
  .caps{grid-template-columns:1fr}
  .biz--ptn .biz__item{grid-column:span 12}
  .hero__actions{flex-direction:column}
  .hero__actions .btn{width:100%}
  .brand__name{font-size:17px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}