:root{
  --paper:#F6F1E4;
  --paper-2:#FFFDF7;
  --ink:#1B1410;
  --ink-soft:#2C231C;
  --purple-deep:#3B1F52;
  --purple:#6D3FA8;
  --green:#123B33;
  --neon:#35E0D0;
  --gold:#E0A94B;
  --orange:#E2542C;
  --muted:#8A8175;
  --line:rgba(27,20,16,.14);
  --line-strong:rgba(27,20,16,.3);
  --shadow-1:0 1px 2px rgba(27,20,16,.07);
  --shadow-2:0 10px 26px -16px rgba(27,20,16,.4);
  --pill:999px;
  --radius-card:14px;
  --maxw:1240px;
  --gutter:clamp(16px,4vw,34px);
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,"Noto Sans SC",sans-serif;
  --font-meta:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,figure{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-top:calc(var(--header-h) + 10px);
}

h1,h2,h3,h4{font-weight:900;letter-spacing:-.02em;line-height:1.22;color:var(--ink)}
p{max-width:38em}
strong{font-weight:800}

:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;left:50%;
  transform:translate(-50%,-220%);
  z-index:200;
  padding:10px 20px;
  border-radius:var(--pill);
  background:var(--ink);
  color:var(--neon);
  font-size:14px;font-weight:800;
  box-shadow:0 8px 24px -12px rgba(0,0,0,.7);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:80;
  padding:clamp(10px,1.6vw,16px) var(--gutter) 0;
  pointer-events:none;
  transition:padding .2s var(--ease);
}
.site-header[data-condensed]{padding-top:6px}

.scroll-progress{
  position:fixed;
  top:0;left:0;
  height:3px;width:0;
  background:linear-gradient(90deg,var(--purple),var(--neon));
  box-shadow:0 0 12px rgba(53,224,208,.55);
  z-index:120;
  transition:width .12s linear;
}

.header-inner{
  position:relative;
  pointer-events:auto;
  max-width:var(--maxw);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:12px;
}

.brand{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 18px 7px 7px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--pill);
  box-shadow:var(--shadow-1);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.brand:hover{border-color:var(--purple);box-shadow:var(--shadow-2)}
.brand-mark{
  flex:0 0 auto;
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:50%;
  background:radial-gradient(circle at 30% 24%,#8B57C8,var(--purple-deep) 72%);
  box-shadow:inset 0 0 0 1px rgba(53,224,208,.38);
  color:var(--neon);
  font-size:16px;font-weight:900;
  letter-spacing:0;
}
.brand-text{display:block;line-height:1.2}
.brand-name{display:block;font-size:16px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.brand-sub{display:block;font-family:var(--font-meta);font-size:11px;letter-spacing:.06em;color:var(--muted)}

.nav-cap{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--pill);
  box-shadow:var(--shadow-1);
}
.nav-link{
  display:block;
  padding:8px 13px;
  border-radius:var(--pill);
  font-size:14px;
  font-weight:700;
  color:var(--ink-soft);
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:rgba(109,63,168,.14);color:var(--purple-deep)}
.nav-link[aria-current="page"]{background:var(--purple-deep);color:var(--neon);box-shadow:0 0 0 1px rgba(53,224,208,.3)}

.nav-cap-cta{display:none}

.header-actions{flex:0 0 auto;display:flex;align-items:center;gap:8px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:14px;
  font-weight:800;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-solid{background:var(--purple-deep);color:var(--paper-2);border-color:var(--purple-deep)}
.btn-solid:hover{background:var(--green);border-color:var(--green);color:var(--neon)}
.btn-ghost{background:transparent;color:var(--purple-deep);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--gold);background:rgba(224,169,75,.16);color:var(--ink)}
.btn:active{transform:translateY(1px)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px}

.nav-toggle{
  display:none;
  margin-left:auto;
  align-items:center;
  gap:9px;
  padding:10px 18px;
  border-radius:var(--pill);
  background:var(--paper-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  font-size:13px;
  font-weight:800;
  color:var(--ink);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--purple)}
.nav-toggle-bars{position:relative;width:16px;height:10px;flex:0 0 auto}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  border-radius:2px;
  background:var(--purple-deep);
  transition:transform .18s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.nav-toggle-label{font-family:var(--font-meta);letter-spacing:.08em}
.site-header[data-nav-open] .nav-toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.site-header[data-nav-open] .nav-toggle-bars::after{transform:translateY(-4px) rotate(-45deg)}

/* ---------- layout helpers ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}
.col-3{grid-column:span 3}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-12{grid-column:span 12}

.section-head{margin-bottom:clamp(18px,2.6vw,32px)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-meta);
  font-size:12px;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--orange);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);display:block}
.section-title{font-size:clamp(24px,3.6vw,40px);margin-top:8px}
.lede{
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.85;
  color:var(--ink-soft);
  max-width:36em;
  margin-top:12px;
}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{padding:22px 0 6px;font-family:var(--font-meta);font-size:12.5px;color:var(--muted)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"·";color:var(--orange);font-weight:900}
.breadcrumbs a{color:var(--muted);border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumbs a:hover{color:var(--purple);border-bottom-color:var(--purple)}
.breadcrumbs [aria-current="page"]{color:var(--ink);font-weight:700}

/* ---------- cards & tags ---------- */
.card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:clamp(18px,2.4vw,28px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--purple);box-shadow:var(--shadow-2)}

.card-flat{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:clamp(16px,2.2vw,24px);
}

.card-dark{
  background:linear-gradient(150deg,var(--green),#0C2A25 75%);
  border:1px solid rgba(53,224,208,.24);
  border-radius:var(--radius-card);
  color:rgba(255,253,247,.88);
  padding:clamp(18px,2.4vw,28px);
}
.card-dark h3,.card-dark h2{color:var(--paper-2)}

.dark-panel{
  position:relative;
  overflow:hidden;
  background:radial-gradient(120% 90% at 8% 0%,rgba(109,63,168,.5),transparent 60%),linear-gradient(160deg,var(--green),#0B2621);
  border-radius:18px;
  border:1px solid rgba(53,224,208,.2);
  color:rgba(255,253,247,.86);
  padding:clamp(22px,3.6vw,48px);
}
.dark-panel::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-80px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,208,.28),transparent 68%);
  pointer-events:none;
}
.dark-panel h2,.dark-panel h3{color:var(--paper-2)}
.dark-panel .lede{color:rgba(255,253,247,.72)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--pill);
  border:1px solid rgba(109,63,168,.35);
  background:rgba(109,63,168,.09);
  color:var(--purple-deep);
  font-family:var(--font-meta);
  font-size:12px;
  font-weight:800;
  letter-spacing:.04em;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{background:rgba(109,63,168,.18);border-color:var(--purple)}

.stat-num{
  display:block;
  font-size:clamp(38px,7vw,70px);
  font-weight:900;
  line-height:1;
  letter-spacing:-.05em;
  font-variant-numeric:tabular-nums;
  color:var(--purple-deep);
}
.stat-num.is-neon{color:var(--neon);text-shadow:0 0 26px rgba(53,224,208,.35)}
.stat-label{
  display:block;
  margin-top:8px;
  font-family:var(--font-meta);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
}

/* ---------- media ---------- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(135deg,var(--purple-deep),var(--green));
}
.media img{width:100%;height:100%;object-fit:cover}
.media-4x3{aspect-ratio:4/3}
.media-16x9{aspect-ratio:16/9}
.media-1x1{aspect-ratio:1/1}
.media-3x4{aspect-ratio:3/4}
.media-cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:26px 16px 12px;
  font-family:var(--font-meta);
  font-size:12px;
  line-height:1.5;
  color:rgba(255,253,247,.9);
  background:linear-gradient(transparent,rgba(27,20,16,.78));
}

/* ---------- reveal ---------- */
.reveal{opacity:1;transform:none}
.js .reveal{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .34s var(--ease),transform .34s var(--ease);
}
.js .reveal.is-visible{opacity:1;transform:none}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(56px,9vw,110px);
  padding:clamp(40px,6vw,76px) 0 0;
  color:rgba(255,253,247,.8);
  border-top:1px solid rgba(53,224,208,.24);
  background:
    radial-gradient(120% 90% at 10% 0%,rgba(109,63,168,.62),transparent 62%),
    radial-gradient(90% 80% at 92% 12%,rgba(18,59,51,.95),transparent 66%),
    var(--purple-deep);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.4;
  background-image:radial-gradient(rgba(53,224,208,.22) 1px,transparent 1px);
  background-size:5px 5px;
}

.footer-inner{
  position:relative;
  z-index:1;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,2.4fr) minmax(0,1.7fr);
  gap:clamp(26px,4vw,52px);
}

.footer-brand{max-width:30em}
.footer-mark{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--paper-2);
  line-height:1.2;
}
.footer-tag{
  margin-top:8px;
  font-family:var(--font-meta);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-note{
  margin-top:14px;
  font-size:13px;
  line-height:1.85;
  color:rgba(255,253,247,.58);
  max-width:26em;
}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.footer-col-title{
  font-family:var(--font-meta);
  font-size:12px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--gold);
  margin-bottom:14px;
}
.footer-col li{margin-bottom:8px}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:rgba(255,253,247,.74);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--neon);border-bottom-color:rgba(53,224,208,.55)}

.footer-contact .contact-list{display:grid;gap:10px}
.contact-list li{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:10px;
  align-items:start;
  font-size:13px;
  line-height:1.7;
}
.contact-k{
  font-family:var(--font-meta);
  font-size:12px;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--neon);
  padding-top:2px;
}
.contact-v{color:rgba(255,253,247,.78);word-break:break-word}

.footer-base{
  position:relative;
  z-index:1;
  max-width:var(--maxw);
  margin:clamp(34px,5vw,58px) auto 0;
  padding:18px var(--gutter) 26px;
  border-top:1px solid rgba(255,253,247,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-family:var(--font-meta);
  font-size:12px;
  color:rgba(255,253,247,.52);
}
.footer-copy,.footer-icp,.footer-update{margin:0;max-width:none}
.footer-icp{letter-spacing:.04em}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .footer-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr)}
  .footer-brand{grid-column:1 / -1;max-width:36em}
  .footer-contact{grid-column:2 / 3}
}

@media (max-width:900px){
  :root{--header-h:64px;--maxw:720px}
  body{font-size:16px;padding-top:calc(var(--header-h) + 8px)}

  .header-actions{display:none}
  .nav-toggle{display:inline-flex}

  .nav-cap{
    position:fixed;
    left:var(--gutter);
    right:var(--gutter);
    bottom:14px;
    display:block;
    z-index:90;
    padding:16px 14px calc(16px + env(safe-area-inset-bottom,0px));
    background:var(--paper-2);
    border:1px solid var(--line-strong);
    border-radius:24px;
    box-shadow:0 24px 48px -22px rgba(27,20,16,.6);
    opacity:0;
    visibility:hidden;
    transform:translateY(118%);
    transition:transform .22s var(--ease),opacity .22s var(--ease),visibility .22s;
  }
  .site-header[data-nav-open] .nav-cap{opacity:1;visibility:visible;transform:translateY(0)}

  .nav-list{flex-direction:column;align-items:stretch;gap:4px;padding:0;background:transparent;border:0;box-shadow:none;border-radius:0}
  .nav-link{padding:13px 14px;border-radius:14px;font-size:16px}
  .nav-link[aria-current="page"]{box-shadow:none}

  .nav-cap-cta{display:grid;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
  .nav-cap-cta .btn{width:100%}

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3{grid-column:span 6}
  .col-5{grid-column:span 6}
  .col-7{grid-column:span 6}
}

@media (max-width:640px){
  .brand-sub{display:none}
  .footer-inner{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-column:auto}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .footer-base{flex-direction:column;align-items:flex-start}
}

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