/* =========================================================
   FUJIN — Base design system
   ========================================================= */
:root{
  --bg:#16213a;
  --bg-soft:#1b2742;
  --panel:rgba(255,255,255,.065);
  --panel-2:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.13);
  --line-strong:rgba(255,255,255,.21);
  --text:#f4f7fd;
  --muted:#b4c1d5;
  --muted-2:#8e9cb5;
  --cyan:#22d3ee;
  --sky:#38bdf8;
  --violet:#7c6cff;
  --pink:#e879f9;
  --mint:#3ee6b0;
  --grad:linear-gradient(112deg,#5eead4 0%,#38bdf8 34%,#818cf8 66%,#e879f9 100%);
  --grad-soft:linear-gradient(112deg,rgba(94,234,212,.16),rgba(56,189,248,.12) 40%,rgba(129,140,248,.14) 70%,rgba(232,121,249,.12));
  --radius:22px;
  --radius-sm:14px;
  --max:1200px;
  --font:"Segoe UI Variable Display","Segoe UI",-apple-system,BlinkMacSystemFont,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"Cascadia Code","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 600px at 8% -5%,rgba(56,189,248,.13),transparent 62%),
    radial-gradient(800px 540px at 96% 4%,rgba(124,108,255,.14),transparent 64%),
    radial-gradient(700px 500px at 50% 104%,rgba(62,230,176,.06),transparent 66%),
    linear-gradient(180deg,#16213a,#1a2640 40%,#16213a);
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.35;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}
::selection{background:rgba(56,189,248,.32);color:#fff}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
p,h1,h2,h3,h4,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid #67e8f9;outline-offset:3px;border-radius:6px}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:#16213a}
::-webkit-scrollbar-thumb{background:#2b3a58;border-radius:8px;border:2px solid #16213a}
::-webkit-scrollbar-thumb:hover{background:#2a3650}

.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:28px}
.section{padding:112px 0;position:relative}
section[id],div[id]{scroll-margin-top:96px}
.section-tight{padding:78px 0}
.section-line{border-top:1px solid var(--line)}
.skip-link{position:absolute;left:-9999px;top:12px;z-index:999;background:#1b2742;padding:12px 18px;border-radius:10px}
.skip-link:focus{left:16px}

/* ---------- type ---------- */
h1,h2,h3,h4{font-weight:680;line-height:1.15;letter-spacing:-.025em}
.h2{font-size:clamp(2rem,3.7vw,3.15rem);line-height:1.1;letter-spacing:-.035em}
.h3{font-size:clamp(1.35rem,2vw,1.75rem);line-height:1.25}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(1.02rem,1.35vw,1.14rem);color:var(--muted);line-height:1.75}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.mono{font-family:var(--mono)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:#a9b8ff;margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,#5eead4,#818cf8)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#5eead4;box-shadow:0 0 12px #5eead4;animation:pulse 2.4s infinite}
.section-head{max-width:780px;margin-bottom:54px}
.section-head p{margin-top:18px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head.center p{margin-inline:auto;max-width:640px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:54px}
.section-head-row .section-head{margin-bottom:0}

/* ---------- buttons ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 26px;border-radius:999px;
  font-size:.94rem;font-weight:650;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;transition:transform .3s var(--ease),box-shadow .3s,background .3s,border-color .3s,color .3s;
}
.btn svg{width:17px;height:17px;flex:none;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{
  background:var(--grad);color:#04101a;
  box-shadow:0 10px 34px rgba(56,189,248,.24),inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px rgba(99,102,241,.36),inset 0 1px 0 rgba(255,255,255,.55)}
.btn-ghost{
  background:rgba(255,255,255,.035);border-color:var(--line-strong);color:var(--text);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.075);border-color:rgba(255,255,255,.28)}
.btn-sm{min-height:44px;padding:0 20px;font-size:.86rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:#c7d2fe;font-size:.9rem;font-weight:600;transition:gap .3s,color .3s}
.link-arrow svg{width:15px;height:15px}
.link-arrow:hover{gap:12px;color:#fff}

/* ---------- header ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:100;transition:background .35s,border-color .35s,backdrop-filter .35s}
.site-header::after{content:"";position:absolute;inset:auto 0 0;height:1px;background:transparent;transition:background .35s}
.site-header.is-scrolled{background:rgba(22,33,58,.8);backdrop-filter:blur(18px) saturate(140%);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{height:78px;display:flex;align-items:center;gap:30px;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none;z-index:2}
.brand-mark{width:38px;height:38px;flex:none;filter:drop-shadow(0 4px 14px rgba(56,189,248,.28))}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:1.02rem;font-weight:720;letter-spacing:.02em}
.brand-sub{font-size:.58rem;letter-spacing:.28em;color:var(--muted-2);text-transform:uppercase;margin-top:4px}
.nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 14px;font-size:.9rem;color:#c3cbdb;border-radius:9px;transition:color .25s,background .25s}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:linear-gradient(90deg,#5eead4,#818cf8);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:#fff}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.header-cta{min-height:42px;padding:0 20px;font-size:.84rem}

/* language switch */
.lang{
  display:inline-flex;align-items:center;padding:3px;gap:2px;
  border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.03);
}
.lang-btn{
  min-width:38px;height:30px;padding:0 9px;border-radius:999px;
  font-size:.72rem;font-weight:650;letter-spacing:.04em;color:var(--muted);
  transition:background .25s,color .25s,box-shadow .25s;
}
.lang-btn:hover{color:#fff}
.lang-btn.is-active{background:rgba(255,255,255,.11);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.14)}
.lang-lg .lang-btn{min-width:64px;height:38px;font-size:.8rem}
.lang-lg{border-radius:12px}
.lang-lg .lang-btn{border-radius:9px}

.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;position:relative;z-index:2;background:rgba(255,255,255,.03)}
.nav-toggle span{position:absolute;left:11px;right:11px;height:1.5px;background:#dfe6f5;border-radius:2px;transition:transform .3s,opacity .3s,top .3s}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:25px}
body.nav-open .nav-toggle span:nth-child(1){top:20px;transform:rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){top:20px;transform:rotate(-45deg)}
.nav-mobile-extra{display:none}

/* ---------- footer ---------- */
.site-footer{position:relative;padding:78px 0 30px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.012),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:48px;padding-bottom:56px}
.footer-brand p{color:var(--muted);font-size:.9rem;max-width:330px;margin-top:18px;line-height:1.75}
.footer-col h4{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);margin-bottom:18px;font-weight:600}
.footer-col a{display:block;width:fit-content;padding:5px 0;font-size:.9rem;color:#b6c0d3;transition:color .25s,transform .25s}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:.9rem;color:#b6c0d3}
.footer-contact a:hover{color:#fff}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:26px;border-top:1px solid var(--line);font-size:.78rem;color:var(--muted-2)}
.footer-bottom .footer-meta{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
.footer-lang{display:flex;align-items:center;gap:10px}
.footer-lang .lang-btn{font-size:.7rem;color:#98a5bd}

/* ---------- utilities ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex}
.center{text-align:center}
.hide{display:none !important}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.035);
  font-size:.73rem;letter-spacing:.04em;color:#c7d2e5;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:#3ee6b0;box-shadow:0 0 10px #3ee6b0}
.tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:7px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.035);font-size:.71rem;color:#aeb9cd;white-space:nowrap}
.tag-row{display:flex;flex-wrap:wrap;gap:7px}

/* reveal */
html.js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease),transform .85s var(--ease);transition-delay:var(--d,0s)}
html.js [data-reveal].is-visible{opacity:1;transform:none}

@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes blink{0%,45%{opacity:1}50%,100%{opacity:0}}
@keyframes barGrow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes spinSlow{to{transform:rotate(360deg)}}
@keyframes scan{0%{transform:translateY(-100%);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateY(400%);opacity:0}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html.js [data-reveal]{opacity:1;transform:none}
}