:root{
  --brand:#7c5cff;
  --brand-2:#ff7ac0;
  --brand-3:#4ad6c8;
  --bg:#f5f4fb;
  --bg-soft:#ffffff;
  --bg-card:rgba(255,255,255,.72);
  --bg-glass:rgba(255,255,255,.55);
  --text:#1c1a2b;
  --text-soft:#5b5870;
  --text-mute:#8b88a0;
  --line:rgba(28,26,43,.10);
  --line-strong:rgba(28,26,43,.16);
  --shadow-sm:0 4px 14px rgba(48,36,110,.08);
  --shadow-md:0 14px 40px rgba(48,36,110,.12);
  --shadow-lg:0 28px 70px rgba(48,36,110,.18);
  --radius-sm:12px;
  --radius:20px;
  --radius-lg:28px;
  --radius-pill:999px;
  --grad-brand:linear-gradient(135deg,#7c5cff 0%,#a26bff 45%,#ff7ac0 100%);
  --grad-soft:linear-gradient(160deg,rgba(124,92,255,.14),rgba(74,214,200,.12) 60%,rgba(255,122,192,.14));
  --grad-banner:linear-gradient(120deg,#6a4bff 0%,#8f5cff 30%,#c86bff 62%,#ff7ac0 100%);
  --header-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#0d0c16;
    --bg-soft:#15131f;
    --bg-card:rgba(30,27,45,.62);
    --bg-glass:rgba(30,27,45,.48);
    --text:#f2f0fa;
    --text-soft:#c3bfd8;
    --text-mute:#918da8;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.18);
    --shadow-sm:0 4px 14px rgba(0,0,0,.35);
    --shadow-md:0 14px 40px rgba(0,0,0,.45);
    --shadow-lg:0 28px 70px rgba(0,0,0,.6);
    --grad-soft:linear-gradient(160deg,rgba(124,92,255,.22),rgba(74,214,200,.14) 60%,rgba(255,122,192,.18));
  }
}

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(1100px 620px at 12% -8%,rgba(124,92,255,.20),transparent 62%),
    radial-gradient(900px 560px at 92% 4%,rgba(255,122,192,.16),transparent 60%),
    radial-gradient(760px 520px at 50% 108%,rgba(74,214,200,.14),transparent 62%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%;height:auto;display:block;}

a{
  color:var(--brand);
  text-decoration:none;
  transition:color .25s var(--ease),opacity .25s var(--ease);
}
a:hover{color:var(--brand-2);}
a:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

h1,h2,h3,h4{
  margin:0 0 .6em;
  line-height:1.3;
  font-weight:800;
  letter-spacing:.2px;
  color:var(--text);
  scroll-margin-top:calc(var(--header-h) + 20px);
}
h1{font-size:clamp(1.75rem,4.6vw,3rem);letter-spacing:-.4px;}
h2{font-size:clamp(1.4rem,3.2vw,2.1rem);}
h3{font-size:clamp(1.12rem,2.2vw,1.42rem);}
h4{font-size:clamp(1rem,1.8vw,1.16rem);font-weight:700;color:var(--text-soft);}

p{margin:0 0 1em;color:var(--text-soft);}
strong{color:var(--text);font-weight:700;}

ul,ol{margin:0 0 1.1em;padding-left:1.35em;color:var(--text-soft);}
li{margin:.3em 0;}
li::marker{color:var(--brand);}

blockquote{
  margin:1em 0;
  padding:1em 1.25em;
  border-left:4px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--grad-soft);
  color:var(--text-soft);
  font-style:normal;
}
blockquote p{margin:0;color:var(--text-soft);}

/* ============ HEADER ============ */
#site-header{
  position:sticky;
  top:0;
  z-index:100;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  backdrop-filter:blur(18px) saturate(180%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}

.header-inner{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:1.16rem;
  font-weight:800;
  color:var(--text);
  letter-spacing:.5px;
  white-space:nowrap;
  transition:transform .3s var(--ease);
}
.logo svg{
  border-radius:50%;
  box-shadow:0 6px 18px rgba(124,92,255,.42);
  transition:transform .5s var(--ease),box-shadow .35s var(--ease);
}
.logo:hover{color:var(--text);transform:translateY(-1px);}
.logo:hover svg{transform:rotate(-12deg) scale(1.06);box-shadow:0 10px 26px rgba(124,92,255,.6);}

#site-header nav{flex:1;display:flex;justify-content:flex-end;min-width:0;}
#site-header nav ul{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0;
  padding:0;
  list-style:none;
  overflow-x:auto;
  scrollbar-width:none;
}
#site-header nav ul::-webkit-scrollbar{display:none;}
#site-header nav li{margin:0;}
#site-header nav a{
  display:block;
  padding:8px 13px;
  border-radius:var(--radius-pill);
  font-size:.9rem;
  font-weight:600;
  color:var(--text-soft);
  white-space:nowrap;
  transition:color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
#site-header nav a:hover{
  color:var(--brand);
  background:rgba(124,92,255,.12);
  transform:translateY(-2px);
}

/* ============ MAIN LAYOUT ============ */
main{display:block;}

main > section{
  position:relative;
  width:100%;
  max-width:1180px;
  margin:0 auto 30px;
  padding:clamp(26px,4vw,48px);
  background:var(--bg-card);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),border-color .45s var(--ease);
  animation:fadeUp .8s var(--ease) both;
}
main > section:hover{
  box-shadow:var(--shadow-md);
  border-color:var(--line-strong);
}

main > section:first-of-type{margin-top:30px;}

/* staggered reveal */
main > section:nth-of-type(1){animation-delay:.02s;}
main > section:nth-of-type(2){animation-delay:.06s;}
main > section:nth-of-type(3){animation-delay:.10s;}
main > section:nth-of-type(4){animation-delay:.14s;}
main > section:nth-of-type(5){animation-delay:.18s;}
main > section:nth-of-type(6){animation-delay:.22s;}
main > section:nth-of-type(7){animation-delay:.26s;}
main > section:nth-of-type(8){animation-delay:.30s;}
main > section:nth-of-type(9){animation-delay:.34s;}
main > section:nth-of-type(10){animation-delay:.38s;}
main > section:nth-of-type(11){animation-delay:.42s;}
main > section:nth-of-type(12){animation-delay:.46s;}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(26px);}
  to{opacity:1;transform:translateY(0);}
}

/* ============ HERO BANNER ============ */
#hero{
  position:relative;
  overflow:hidden;
  padding:clamp(34px,6vw,72px) clamp(24px,4.5vw,56px);
  border:none;
  border-radius:var(--radius-lg);
  background:var(--grad-banner);
  background-size:200% 200%;
  color:#fff;
  box-shadow:var(--shadow-lg);
  animation:fadeUp .8s var(--ease) both,gradShift 14s ease infinite;
}
@keyframes gradShift{
  0%{background-position:0% 50%;}
  50%{background-position:100% 50%;}
  100%{background-position:0% 50%;}
}
#hero::before,
#hero::after{
  content:"";
  position:absolute;
  border-radius:50%;
  pointer-events:none;
  filter:blur(6px);
}
#hero::before{
  width:380px;height:380px;
  top:-160px;right:-110px;
  background:radial-gradient(circle,rgba(255,255,255,.34),transparent 68%);
  animation:floatA 12s ease-in-out infinite;
}
#hero::after{
  width:300px;height:300px;
  bottom:-140px;left:-90px;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
  animation:floatB 15s ease-in-out infinite;
}
@keyframes floatA{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(-24px,26px) scale(1.08);}
}
@keyframes floatB{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(28px,-20px) scale(1.1);}
}
#hero:hover{box-shadow:0 34px 80px rgba(90,60,220,.34);}

#hero h1{
  position:relative;
  z-index:1;
  color:#fff;
  text-shadow:0 4px 22px rgba(40,20,90,.28);
  max-width:22ch;
}
#hero p{
  position:relative;
  z-index:1;
  max-width:74ch;
  color:rgba(255,255,255,.94);
  font-size:clamp(.98rem,1.6vw,1.08rem);
}
#hero strong{
  color:#fff;
  background:rgba(255,255,255,.18);
  padding:.05em .4em;
  border-radius:8px;
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone;
}

/* ============ SECTION HEADINGS ============ */
main > section > h2{
  position:relative;
  padding-left:18px;
  margin-bottom:1.1em;
}
main > section > h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.18em;
  width:6px;
  border-radius:var(--radius-pill);
  background:var(--grad-brand);
  box-shadow:0 4px 14px rgba(124,92,255,.5);
}

main > section > h3{
  margin-top:1.6em;
  padding-bottom:.4em;
  border-bottom:1px dashed var(--line-strong);
}

/* ============ CARDS: PRODUCTS / SOLUTIONS / CASES ============ */
#products,
#solutions,
#cases,
#news,
#articles,
#faq{
  background:
    linear-gradient(var(--bg-card),var(--bg-card)) padding-box,
    var(--grad-soft) border-box;
}

/* Product / solution sub-blocks */
#products h4,
#solutions h3,
#cases h3{
  position:relative;
  padding-left:16px;
}
#products h4::before,
#solutions h3::before,
#cases h3::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--grad-brand);
  box-shadow:0 0 0 4px rgba(124,92,255,.16);
}

#solutions ul,
#howto ul,
#howto ol,
#contact ul,
#sitemap ul,
#links ul{
  display:grid;
  gap:8px 22px;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  padding-left:0;
  list-style:none;
}
#howto ol{counter-reset:step;}
#solutions li,
#howto ul li,
#contact ul li,
#sitemap li,
#links li{
  position:relative;
  padding:12px 16px 12px 40px;
  border-radius:var(--radius);
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  color:var(--text-soft);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
#solutions li::before,
#howto ul li::before,
#contact ul li::before,
#sitemap li::before,
#links li::before{
  content:"";
  position:absolute;
  left:16px;top:50%;
  width:9px;height:9px;
  margin-top:-4.5px;
  border-radius:50%;
  background:var(--grad-brand);
}
#howto ol li{
  position:relative;
  padding:12px 16px 12px 52px;
  border-radius:var(--radius);
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  color:var(--text-soft);
  counter-increment:step;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
#howto ol li::before{
  content:counter(step);
  position:absolute;
  left:12px;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:var(--grad-brand);
  color:#fff;
  font-size:.78rem;
  font-weight:800;
  box-shadow:0 4px 12px rgba(124,92,255,.45);
}
#solutions li:hover,
#howto ul li:hover,
#howto ol li:hover,
#contact ul li:hover,
#sitemap li:hover,
#links li:hover{
  transform:translateY(-4px);
  border-color:rgba(124,92,255,.45);
  box-shadow:var(--shadow-md);
  background:var(--bg-soft);
}

/* ============ CASES / QUOTES ============ */
#cases blockquote{
  position:relative;
  padding:1.1em 1.3em 1.1em 3em;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--radius);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
#cases blockquote::before{
  content:"\201C";
  position:absolute;
  left:.5em;top:.28em;
  font-size:2.5rem;
  line-height:1;
  color:var(--brand);
  opacity:.55;
  font-family:Georgia,serif;
}
#cases blockquote:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}

/* ============ NEWS ============ */
#news h3{margin-top:1.4em;}
#news h3 + p:first-of-type{
  display:inline-block;
  padding:3px 12px;
  border-radius:var(--radius-pill);
  background:rgba(124,92,255,.12);
  color:var(--brand);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.3px;
}

/* ============ ARTICLES ============ */
#articles{
  display:grid;
  gap:18px;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}
#articles > h2{grid-column:1/-1;}
#articles > article{
  position:relative;
  display:flex;
  flex-direction:column;
  padding:22px;
  border-radius:var(--radius);
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(12px) saturate(150%);
  backdrop-filter:blur(12px) saturate(150%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
}
#articles > article::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:var(--grad-soft);
  opacity:0;
  transition:opacity .4s var(--ease);
  pointer-events:none;
}
#articles > article:hover{
  transform:translateY(-8px);
  border-color:rgba(124,92,255,.45);
  box-shadow:var(--shadow-lg);
}
#articles > article:hover::after{opacity:1;}
#articles > article > *{position:relative;z-index:1;}
#articles > article h3{margin-bottom:.4em;border:none;padding:0;}
#articles > article h3::before{display:none;}
#articles > article p:first-of-type{
  font-size:.8rem;
  font-weight:700;
  color:var(--brand);
  margin-bottom:.3em;
}
#articles > article a{
  margin-top:auto;
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 18px;
  border-radius:var(--radius-pill);
  background:var(--grad-brand);
  color:#fff;
  font-size:.86rem;
  font-weight:700;
  box-shadow:0 8px 20px rgba(124,92,255,.34);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),filter .3s var(--ease);
}
#articles > article a::after{
  content:"\2192";
  transition:transform .3s var(--ease);
}
#articles > article a:hover{
  color:#fff;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 14px 30px rgba(124,92,255,.5);
}
#articles > article a:hover::after{transform:translateX(4px);}

/* ============ FAQ ============ */
#faq h3{
  position:relative;
  margin-top:1.5em;
  padding:14px 18px 14px 46px;
  border:none;
  border-radius:var(--radius);
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  font-size:1.02rem;
  cursor:default;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
#faq h3::before{
  content:"Q";
  position:absolute;
  left:14px;top:50%;
  transform:translateY(-50%);
  width:24px;height:24px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:var(--grad-brand);
  color:#fff;
  font-size:.76rem;
  font-weight:800;
  box-shadow:0 4px 12px rgba(124,92,255,.42);
}
#faq h3:hover{
  transform:translateY(-3px);
  border-color:rgba(124,92,255,.45);
  box-shadow:var(--shadow-md);
}
#faq h3 + p{margin-top:-.2em;padding-left:8px;}

/* ============ HOWTO ============ */
#howto h3{margin-top:1.5em;}
#howto > p:last-of-type{
  padding:16px 20px;
  border-radius:var(--radius);
  background:var(--grad-soft);
  border:1px solid var(--line);
}

/* ============ CONTACT ============ */
#contact ul li::before{background:linear-gradient(135deg,#4ad6c8,#7c5cff);}

/* ============ SITEMAP + LINKS ============ */
#sitemap ul li,
#links ul li{padding-left:40px;}
#links a{font-weight:600;}

/* ============ LEGAL ============ */
#legal h3{margin-top:1.4em;}

/* ============ FOOTER ============ */
footer{
  position:relative;
  margin-top:20px;
  padding:38px 24px 46px;
  text-align:center;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-top:1px solid var(--line);
}
footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--grad-brand);
  background-size:200% 100%;
  animation:gradShift 10s ease infinite;
}
footer p{
  margin:.35em 0;
  color:var(--text-mute);
  font-size:.88rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  main > section{padding:clamp(22px,3.6vw,36px);}
}

@media (max-width:820px){
  :root{--header-h:64px;}
  #site-header nav a{padding:7px 10px;font-size:.84rem;}
  #hero h1{max-width:none;}
  #articles{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}
}

@media (max-width:640px){
  body{font-size:15.5px;}
  .header-inner{padding:0 14px;gap:10px;}
  .logo span{font-size:1rem;}
  .logo svg{width:34px;height:34px;}
  #site-header nav ul{gap:2px;}
  #site-header nav a{padding:6px 9px;font-size:.8rem;}

  main > section{
    margin:0 12px 18px;
    padding:22px 18px;
    border-radius:var(--radius);
  }
  main > section:first-of-type{margin-top:16px;}

  #hero{
    margin:0 12px 18px;
    padding:34px 20px;
    border-radius:var(--radius);
  }
  #hero::before{width:240px;height:240px;top:-110px;right:-80px;}
  #hero::after{width:200px;height:200px;bottom:-100px;left:-70px;}

  main > section > h2{padding-left:14px;}
  main > section > h2::before{width:5px;}

  #solutions ul,
  #howto ul,
  #howto ol,
  #contact ul,
  #sitemap ul,
  #links ul{
    grid-template-columns:1fr;
  }

  #articles{grid-template-columns:1fr;gap:14px;}
  #articles > article{padding:18px;}

  #faq h3{padding:12px 14px 12px 42px;font-size:.96rem;}
  #faq h3::before{left:12px;width:22px;height:22px;font-size:.72rem;}

  blockquote{padding:.9em 1em .9em 2.4em;}
  #cases blockquote{padding:1em 1.1em 1em 2.6em;}
  #cases blockquote::before{font-size:2rem;}

  footer{padding:30px 16px 38px;}
}

@media (max-width:400px){
  #site-header nav a{padding:6px 8px;font-size:.76rem;}
  main > section{padding:18px 14px;}
}

/* ============ MOTION PREFERENCES ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  main > section{opacity:1;transform:none;}
}

/* ============ PRINT ============ */
@media print{
  #site-header{position:static;box-shadow:none;}
  main > section,
  #articles > article{
    box-shadow:none;
    border:1px solid #ccc;
    animation:none;
    break-inside:avoid;
  }
  #hero{background:#7c5cff !important;-webkit-print-color-adjust:exact;print-color-adjust:exact;}
  footer{background:none;}
}