/* BlueSmartLink — shared styles */
:root{
  --bg:#0A0F1A; --surface:#111A2B; --line:#223047; --line-2:#2E3E58; --rule:#1C2840;
  --text:#EEF2F8; --text-2:#B9C3D4; --muted:#A3AEC2; --faint:#6B7890;
  --motion:#7AA2FF; --brain:#5EE6B8; --build:#C79BFF; --pilot:#FF8FB1; --lab:#FFB45E;
  --display:'Space Grotesk','Noto Sans SC',sans-serif;
  --body:'IBM Plex Sans','Noto Sans SC',sans-serif;
  --mono:'IBM Plex Mono','Noto Sans SC',monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,video{max-width:100%}
a{color:var(--motion)} a:hover{color:#B3C8FF}
h1,h2,h3{font-family:var(--display);letter-spacing:-.02em;margin:0}
p{margin:0}

/* language */
html[lang="zh-Hans"] .en{display:none !important}
html:not([lang="zh-Hans"]) .zh{display:none !important}

.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.rule{border-top:1px solid var(--rule)}
.grid-bg{background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}
.h2{font-size:clamp(34px,4.2vw,48px);line-height:1.08}
.lead{color:var(--muted);max-width:640px;margin-top:14px}
.section{padding:96px 0}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid var(--line-2);color:#DCE3EE}
.sq{width:10px;height:10px;border-radius:3px;display:inline-block}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:14px 24px;border-radius:8px;font-weight:600;text-decoration:none;border:0;font:inherit;font-weight:600;cursor:pointer}
.btn-primary{background:var(--motion);color:var(--bg)} .btn-primary:hover{color:var(--bg);filter:brightness(1.08)}
.btn-ghost{border:1px solid var(--line-2);background:rgba(10,15,26,.8);color:var(--text)} .btn-ghost:hover{color:var(--text);border-color:#4A5A75}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,15,26,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.nav-in{display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;padding:16px 24px;max-width:1240px;margin:0 auto}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:22px;color:var(--text);text-decoration:none;margin-right:auto}
.logo:hover{color:var(--text)}
.logo-dots{display:inline-flex;gap:3px} .logo-dots i{width:7px;height:7px;border-radius:2px;display:block}
.nav-links{display:flex;flex-wrap:wrap;gap:8px 24px;font-size:15px;font-weight:500}
.nav-links a{color:#DCE3EE;text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.nav-links a[aria-current="page"]{border-bottom-color:currentColor}
.lang{display:inline-flex;border:1px solid var(--line-2);border-radius:999px;padding:3px}
.lang button{min-height:36px;min-width:44px;padding:0 12px;border-radius:999px;border:0;font:inherit;font-size:13px;font-weight:600;cursor:pointer;background:transparent;color:var(--muted)}
.lang button[aria-pressed="true"]{background:var(--text);color:var(--bg)}
.nav-cta{min-height:44px;padding:10px 18px;font-size:15px}
@media (max-width:720px){.nav-cta{display:none}.nav-links{order:3;width:100%;gap:6px 18px}}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--rule)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-in{position:relative;padding:128px 24px 112px;max-width:1240px;margin:0 auto}
.pill{display:inline-flex;flex-wrap:wrap;align-items:center;gap:10px;padding:8px 14px;border:1px solid var(--line-2);border-radius:999px;background:rgba(10,15,26,.8);font-family:var(--mono);font-size:13px;color:var(--muted);margin:0 0 28px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brain);display:inline-block;animation:bslBlink 1.6s ease-in-out infinite}
.hero h1{font-size:clamp(44px,7.4vw,112px);line-height:1.02;letter-spacing:-.035em;max-width:1120px}
.hero .sub{margin-top:32px;font-size:20px;color:var(--text-2);max-width:720px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.hint{margin-top:56px;font-family:var(--mono);font-size:12px;color:var(--faint)}
.up{display:inline-block;animation:bslUp .9s cubic-bezier(.2,.8,.2,1) both}
.shine{display:inline-block;background-image:linear-gradient(90deg,#7AA2FF,#5EE6B8,#C79BFF,#FF8FB1,#FFB45E,#7AA2FF);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:bslUp .9s cubic-bezier(.2,.8,.2,1) .35s both,bslShine 6s linear infinite}

/* ticker */
.ticker{border-bottom:1px solid var(--rule);overflow:hidden;padding:22px 0}
.ticker-track{display:flex;width:max-content;font-family:var(--display);font-size:30px;font-weight:700;white-space:nowrap;animation:bslMarquee 38s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-track span{display:inline-flex;align-items:center;gap:36px;padding-right:36px}
.ticker-track b{color:var(--line-2);font-size:20px;font-weight:400}

/* product cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,480px),1fr));gap:20px}
.pcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--c);border-radius:16px;overflow:hidden;text-decoration:none;color:var(--text);transition:transform .25s,border-color .25s}
.pcard:hover,.pcard.playing{transform:translateY(-4px);border-color:var(--c);color:var(--text)}
.pmedia{position:relative;display:block;aspect-ratio:16/9;background:var(--bg);overflow:hidden;border-bottom:1px solid var(--line)}
.pmedia img,.pmedia video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pmedia video{opacity:0;transition:opacity .3s}
.pcard.playing .pmedia video{opacity:1}
.badge{position:absolute;right:14px;bottom:14px;padding:5px 10px;border-radius:999px;background:rgba(10,15,26,.78);border:1px solid var(--line-2);font-family:var(--mono);font-size:11px;color:#DCE3EE}
.pbody{display:flex;flex-direction:column;gap:12px;padding:24px 26px 26px;flex:1}
.pname{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;color:var(--c)}
.ptitle{font-family:var(--display);font-weight:700;font-size:28px;line-height:1.15}
.pdesc{color:var(--text-2);font-size:15px}
.pmore{margin-top:auto;padding-top:10px;font-weight:600;color:var(--c)}
.chips{display:flex;flex-wrap:wrap;gap:6px}

.labstrip{display:flex;flex-wrap:wrap;align-items:center;gap:20px 32px;margin-top:20px;background:var(--surface);border:1px dashed #4A5A75;border-radius:16px;padding:24px 28px;text-decoration:none;color:var(--text)}
.labstrip:hover{color:var(--text);border-color:var(--lab)}
.labmark{flex:0 0 auto;width:72px;height:72px;border-radius:14px;border:1px solid var(--lab);background-image:linear-gradient(rgba(255,180,94,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(255,180,94,.18) 1px,transparent 1px);background-size:12px 12px;display:flex;align-items:center;justify-content:center;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:22px;color:var(--lab)}

/* bubbles */
.legend{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0 0 8px;font-size:13px;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:10px;height:10px;border-radius:50%;display:block}
.stage{position:relative;height:660px;border:1px solid var(--rule);border-radius:20px;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:22px 22px;overflow:hidden}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.bpos{position:absolute;transform:translate(-50%,-50%)}
.bmove{display:block;will-change:transform}
.bub{border-radius:50%;display:flex;align-items:center;justify-content:center;text-align:center;box-sizing:border-box;line-height:1.25}
.hub{width:150px;height:150px;padding:18px;background:rgba(238,242,248,.04);color:var(--text);border:1.5px solid rgba(238,242,248,.85);box-shadow:0 0 28px rgba(238,242,248,.28),inset 0 0 22px rgba(238,242,248,.12);font-family:var(--display);font-weight:700;font-size:18px}
.sat{width:116px;height:116px;padding:14px;cursor:pointer;font:inherit;font-size:14px;font-weight:600;color:var(--text);background:rgba(17,26,43,.85);border:1.5px solid var(--c);box-shadow:0 0 18px color-mix(in srgb,var(--c) 22%,transparent),inset 0 0 20px color-mix(in srgb,var(--c) 14%,transparent);transition:transform .25s,background .25s,box-shadow .25s}
.sat.big{width:124px;height:124px}
.sat:hover{filter:brightness(1.15)}
.sat[aria-pressed="true"]{transform:scale(1.16);color:#fff;background:color-mix(in srgb,var(--c) 22%,rgba(17,26,43,.9));box-shadow:0 0 0 6px color-mix(in srgb,var(--c) 10%,transparent),0 0 44px color-mix(in srgb,var(--c) 55%,transparent),inset 0 0 26px color-mix(in srgb,var(--c) 35%,transparent)}
.stage-hint{position:absolute;right:18px;bottom:12px;font-family:var(--mono);font-size:11px;color:var(--faint)}
.detail{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:16px 40px;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--c,var(--motion));border-radius:16px;padding:26px 28px}
.detail h3{font-size:28px;line-height:1.15;margin:8px 0}
.detail .meta{font-family:var(--mono);font-size:12px;color:var(--muted)}
@media (max-width:820px){
  .stage{height:auto;display:flex;flex-wrap:wrap;gap:10px;padding:12px}
  .stage canvas,.stage-hint{display:none}
  .bpos{position:static;transform:none}
  .bmove{transform:none !important}
  .hub{width:100%;height:auto;border-radius:12px;justify-content:flex-start;padding:12px 16px;margin-top:10px}
  .sat,.sat.big{width:auto;height:auto;border-radius:999px;padding:10px 16px}
}

/* generic cards */
.tile{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.stat-num{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:56px;line-height:1;letter-spacing:-.02em;margin:14px 0 8px}
.tag{font-family:var(--mono);font-size:12px;color:var(--c,var(--muted))}

/* faq */
.faq{display:flex;flex-wrap:wrap;gap:48px}
.faq h2{flex:1 1 300px}
.faq-list{flex:2 1 560px;border-bottom:1px solid var(--line)}
.faq details{border-top:1px solid var(--line);padding:20px 0}
.faq summary{font-weight:600;font-size:18px;cursor:pointer}
.faq details p{margin-top:12px;color:var(--text-2)}

/* audit form */
.audit-box{background:var(--surface);border:1px solid var(--line-2);border-radius:18px;padding:48px;display:flex;flex-wrap:wrap;align-items:center;gap:32px 48px}
.audit-box form{flex:1 1 300px;min-width:0;display:flex;flex-direction:column;gap:10px}
.audit-box>*{min-width:0}
.audit-box label{font-size:14px;font-weight:500;color:#DCE3EE}
.field{width:100%;min-width:0;max-width:100%;min-height:48px;padding:0 12px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--text);font:inherit}
.form-note{font-size:13px;color:var(--muted)}
@media (max-width:600px){.audit-box{padding:28px}}

/* footer */
.footer{border-top:1px solid var(--rule)}
.footer-in{max-width:1240px;margin:0 auto;padding:48px 24px 64px;display:flex;flex-wrap:wrap;gap:24px 64px;font-size:15px;color:var(--muted)}
.footer-in nav{display:flex;flex-wrap:wrap;gap:12px 32px}

/* subpage bits */
.crumb{font-family:var(--mono);font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.brandmark{display:inline-flex;align-items:center;gap:10px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:22px;margin-bottom:20px}
.brandmark i{width:14px;height:14px;border-radius:3px;display:block}
.page-h1{font-size:clamp(40px,5.5vw,80px);line-height:1.04;letter-spacing:-.03em;max-width:1000px}
.hero-media{margin:56px 0 0;border:1px solid var(--line);border-top:3px solid var(--c);border-radius:16px;overflow:hidden;background:var(--bg)}
.hero-media video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.steps li{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px}
.steps .n{font-family:'Space Grotesk',sans-serif;font-size:40px;font-weight:700;color:#2B3E66;line-height:1}
.steps strong{display:block;font-family:var(--display);font-size:22px;margin:10px 0 4px}
.steps span{font-size:15px;color:var(--muted)}
.works{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,360px),1fr));grid-auto-flow:dense;gap:20px}
.work{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.work.tall{grid-row:span 2}
.work img{display:block;width:100%;object-fit:cover;aspect-ratio:16/9;background:var(--bg)}
.work.tall img{aspect-ratio:4/5}
.work-body{display:flex;flex-direction:column;gap:10px;padding:22px 24px 24px;flex:1}
.work h3{font-size:22px;line-height:1.2}
.work .res{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.work .res b{font-family:'Space Grotesk',sans-serif;font-size:32px;line-height:1}
.notice{padding:14px 18px;border:1px solid var(--line-2);border-radius:10px;font-size:14px;color:var(--text-2);max-width:760px;margin-top:28px}

/* animations */
@keyframes bslUp{from{opacity:0;transform:translateY(28px);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
@keyframes bslShine{0%{background-position:0% 50%}100%{background-position:200% 50%}}
@keyframes bslMarquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes bslReveal{from{opacity:0;transform:translateY(48px)}to{opacity:1;transform:none}}
@keyframes bslBlink{0%,100%{opacity:1}50%{opacity:.25}}
@supports (animation-timeline:view()){.reveal{animation:bslReveal linear both;animation-timeline:view();animation-range:entry 0% cover 22%}}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}.shine{color:var(--motion)}html{scroll-behavior:auto}}