:root{
  --brand-pink:#ff6b9d;
  --brand-purple:#b06bff;
  --brand-gradient:linear-gradient(135deg,#ff6b9d 0%,#b06bff 100%);
  --bg:#fdf7fb;
  --bg-soft:#f6eef9;
  --surface:rgba(255,255,255,.72);
  --surface-solid:#ffffff;
  --text:#2b2136;
  --text-soft:#6b5f7a;
  --muted:#9a8fa8;
  --border:rgba(176,107,255,.16);
  --shadow-sm:0 4px 16px rgba(176,107,255,.10);
  --shadow-md:0 10px 30px rgba(176,107,255,.14);
  --shadow-lg:0 20px 50px rgba(255,107,157,.18);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --maxw:1180px;
  --header-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

[data-theme="dark"]{
  --bg:#14101c;
  --bg-soft:#1b1526;
  --surface:rgba(38,30,52,.62);
  --surface-solid:#221a30;
  --text:#f2ecfa;
  --text-soft:#c3b8d6;
  --muted:#8d80a1;
  --border:rgba(176,107,255,.24);
  --shadow-sm:0 4px 16px rgba(0,0,0,.35);
  --shadow-md:0 10px 30px rgba(0,0,0,.42);
  --shadow-lg:0 20px 50px rgba(0,0,0,.5);
}

*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%,rgba(255,107,157,.14),transparent 42%),
    radial-gradient(circle at 88% 12%,rgba(176,107,255,.16),transparent 46%),
    radial-gradient(circle at 50% 100%,rgba(255,107,157,.08),transparent 55%);
  background-attachment:fixed;
  overflow-x:hidden;
  transition:background-color .35s var(--ease),color .35s var(--ease);
}

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

a{
  color:var(--brand-purple);
  text-decoration:none;
  transition:color .25s var(--ease),opacity .25s var(--ease);
}
a:hover{color:var(--brand-pink);}

h1,h2,h3,h4{
  line-height:1.3;
  margin:0 0 .6em;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text);
}
h1{font-size:clamp(1.6rem,4.2vw,2.6rem);}
h2{font-size:clamp(1.35rem,3vw,2rem);}
h3{font-size:clamp(1.1rem,2.2vw,1.35rem);}

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

ul,ol{margin:0 0 1em;padding-left:1.35em;color:var(--text-soft);}
li{margin:.35em 0;}

time{color:var(--muted);font-size:.9em;}

blockquote{
  margin:1.2em 0;
  padding:1em 1.3em;
  border-left:4px solid var(--brand-pink);
  border-radius:0 var(--radius) var(--radius) 0;
  background:var(--surface);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--text-soft);
  box-shadow:var(--shadow-sm);
}
blockquote p{margin:0;}

address{font-style:normal;}

.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ============ HEADER ============ */
#site-header{
  position:sticky;
  top:0;
  z-index:1000;
  width:100%;
  background:var(--surface);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 20px rgba(176,107,255,.08);
  transition:background-color .35s var(--ease),box-shadow .35s var(--ease);
}

.header-inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:12px 20px;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--text);
  font-weight:800;
}
.brand:hover{color:var(--text);}
.brand-logo{
  width:44px;height:44px;
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
}
.brand:hover .brand-logo{
  transform:rotate(-8deg) scale(1.06);
  box-shadow:var(--shadow-md);
}
.brand-name{
  font-size:1.22rem;
  background:var(--brand-gradient);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  letter-spacing:.5px;
}

.main-nav{flex:1 1 auto;}
.main-nav ul{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px;
  list-style:none;
  margin:0;padding:0;
}
.main-nav a{
  display:inline-block;
  padding:7px 12px;
  border-radius:var(--radius-pill);
  font-size:.9rem;
  font-weight:500;
  color:var(--text-soft);
  position:relative;
  transition:color .25s var(--ease),background-color .25s var(--ease),transform .25s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--brand-gradient);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .3s var(--ease);
}
.main-nav a:hover{
  color:var(--brand-pink);
  background:rgba(255,107,157,.09);
  transform:translateY(-2px);
}
.main-nav a:hover::after{transform:scaleX(1);}

.site-search{
  display:flex;
  align-items:center;
  gap:6px;
  flex:0 1 260px;
  padding:4px 4px 4px 14px;
  border-radius:var(--radius-pill);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-search:focus-within{
  border-color:var(--brand-pink);
  box-shadow:0 0 0 4px rgba(255,107,157,.16),var(--shadow-sm);
}
.site-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  outline:0;
  background:transparent;
  color:var(--text);
  font-size:.9rem;
  font-family:inherit;
  padding:6px 0;
}
.site-search input::placeholder{color:var(--muted);}
.site-search button{
  flex-shrink:0;
  border:0;
  cursor:pointer;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  font-size:.86rem;
  font-family:inherit;
  font-weight:600;
  color:#fff;
  background:var(--brand-gradient);
  background-size:160% 160%;
  transition:background-position .5s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.site-search button:hover{
  background-position:100% 100%;
  transform:translateY(-1px);
  box-shadow:0 6px 18px rgba(255,107,157,.4);
}

.theme-toggle{
  flex-shrink:0;
  cursor:pointer;
  font-family:inherit;
  font-size:.84rem;
  font-weight:600;
  color:var(--text-soft);
  padding:9px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:var(--surface-solid);
  box-shadow:var(--shadow-sm);
  transition:color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.theme-toggle:hover{
  color:var(--brand-purple);
  border-color:var(--brand-purple);
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.theme-toggle:active{transform:translateY(0) scale(.97);}

/* ============ BREADCRUMB ============ */
.breadcrumb{
  max-width:var(--maxw);
  margin:0 auto;
  padding:14px 20px 4px;
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  list-style:none;
  margin:0;padding:0;
  font-size:.84rem;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:6px;margin:0;}
.breadcrumb li+li::before{
  content:"›";
  color:var(--brand-pink);
  font-weight:700;
}
.breadcrumb a{color:var(--text-soft);}
.breadcrumb a:hover{color:var(--brand-pink);}
.breadcrumb [aria-current="page"]{color:var(--brand-purple);font-weight:600;}

/* ============ MAIN LAYOUT ============ */
main{
  max-width:var(--maxw);
  margin:0 auto;
  padding:20px 20px 60px;
  display:flex;
  flex-direction:column;
  gap:34px;
}

main > section{
  position:relative;
  padding:30px clamp(18px,3vw,38px);
  border-radius:var(--radius-lg);
  background:var(--surface);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .4s var(--ease),transform .4s var(--ease),border-color .4s var(--ease);
}
main > section:hover{
  box-shadow:var(--shadow-md);
  border-color:rgba(255,107,157,.3);
}

main > section > h2{
  position:relative;
  padding-left:18px;
  margin-bottom:1em;
}
main > section > h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.18em;
  width:6px;
  border-radius:6px;
  background:var(--brand-gradient);
}

/* ============ HERO ============ */
.hero{
  padding:0!important;
  overflow:hidden;
  background:var(--brand-gradient)!important;
  border:0!important;
  box-shadow:var(--shadow-lg)!important;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 82% 18%,rgba(255,255,255,.32),transparent 42%),
    radial-gradient(circle at 12% 88%,rgba(255,255,255,.2),transparent 46%);
  pointer-events:none;
}
.hero-slider{
  position:relative;
  z-index:1;
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:100%;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.hero-slider::-webkit-scrollbar{display:none;}

.hero .slide{
  scroll-snap-align:start;
  padding:clamp(34px,6vw,68px) clamp(22px,4vw,56px);
  color:#fff;
  animation:fadeUp .8s var(--ease) both;
}
.hero .slide h1,
.hero .slide h2{
  color:#fff;
  text-shadow:0 2px 18px rgba(88,20,60,.28);
}
.hero .slide p{
  color:rgba(255,255,255,.94);
  max-width:62ch;
  font-size:clamp(.95rem,1.6vw,1.08rem);
}
.hero-lead{font-size:clamp(1rem,1.8vw,1.15rem)!important;}
.hero-answer{
  padding:14px 18px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}

.hero .cta{
  display:inline-block;
  margin-top:10px;
  padding:13px 34px;
  border-radius:var(--radius-pill);
  font-weight:700;
  font-size:1rem;
  color:var(--brand-purple);
  background:#fff;
  box-shadow:0 10px 26px rgba(88,20,60,.24);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease);
}
.hero .cta:hover{
  color:var(--brand-pink);
  transform:translateY(-4px) scale(1.03);
  box-shadow:0 18px 38px rgba(88,20,60,.34);
}

/* ============ PRODUCTS / LISTS ============ */
#products ul,
#howto ul,
#howto ol{
  display:grid;
  gap:10px;
  padding-left:0;
  list-style:none;
}
#products ul li,
#howto ul li,
#howto ol li{
  position:relative;
  padding:12px 16px 12px 44px;
  border-radius:var(--radius);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
#products ul li::before,
#howto ul li::before{
  content:"";
  position:absolute;
  left:18px;top:50%;
  width:9px;height:9px;
  margin-top:-4.5px;
  border-radius:50%;
  background:var(--brand-gradient);
  box-shadow:0 0 0 4px rgba(255,107,157,.14);
}
#howto ol{counter-reset:step;}
#howto ol li{counter-increment:step;}
#howto ol li::before{
  content:counter(step);
  position:absolute;
  left:12px;top:50%;
  transform:translateY(-50%);
  width:24px;height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  font-size:.78rem;
  font-weight:700;
  color:#fff;
  background:var(--brand-gradient);
}
#products ul li:hover,
#howto ul li:hover,
#howto ol li:hover{
  transform:translateX(6px);
  border-color:rgba(255,107,157,.4);
  box-shadow:var(--shadow-md);
}

/* ============ CASES ============ */
#cases blockquote{
  position:relative;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
#cases blockquote:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}

/* ============ NEWS & ARTICLES ============ */
#news article,
#articles article{
  position:relative;
  padding:20px 22px;
  margin-bottom:16px;
  border-radius:var(--radius);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
#news article::before,
#articles article::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:var(--brand-gradient);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .4s var(--ease);
}
#news article:hover,
#articles article:hover{
  transform:translateY(-5px);
  border-color:rgba(255,107,157,.35);
  box-shadow:var(--shadow-md);
}
#news article:hover::before,
#articles article:hover::before{transform:scaleY(1);}

#news article h3,
#articles article h3{margin-bottom:.35em;}

#articles article a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:.9rem;
  padding:7px 18px;
  border-radius:var(--radius-pill);
  color:#fff;
  background:var(--brand-gradient);
  background-size:170% 170%;
  transition:background-position .5s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
#articles article a::after{content:"→";transition:transform .3s var(--ease);}
#articles article a:hover{
  color:#fff;
  background-position:100% 100%;
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(176,107,255,.36);
}
#articles article a:hover::after{transform:translateX(4px);}

/* ============ FAQ ============ */
#faq details{
  margin-bottom:12px;
  border-radius:var(--radius);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:box-shadow .35s var(--ease),border-color .35s var(--ease);
}
#faq details[open]{
  border-color:rgba(255,107,157,.42);
  box-shadow:var(--shadow-md);
}
#faq summary{
  cursor:pointer;
  list-style:none;
  position:relative;
  padding:16px 52px 16px 20px;
  font-weight:600;
  color:var(--text);
  transition:color .25s var(--ease),background-color .25s var(--ease);
}
#faq summary::-webkit-details-marker{display:none;}
#faq summary::after{
  content:"+";
  position:absolute;
  right:18px;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  font-size:1.05rem;
  font-weight:700;
  color:#fff;
  background:var(--brand-gradient);
  transition:transform .35s var(--ease);
}
#faq details[open] summary::after{transform:translateY(-50%) rotate(135deg);}
#faq summary:hover{
  color:var(--brand-pink);
  background:rgba(255,107,157,.07);
}
#faq details p{
  padding:0 20px 18px;
  margin:0;
  animation:fadeUp .4s var(--ease) both;
}

/* ============ CONTACT ============ */
#contact address{
  display:grid;
  gap:10px;
  padding:20px 22px;
  border-radius:var(--radius);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
}
#contact address p{margin:0;}
#contact address a{font-weight:600;}

/* ============ SITEMAP / LINKS ============ */
#sitemap ul,
#links ul{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  list-style:none;
  padding:0;
  margin:0;
}
#sitemap li,
#links li{margin:0;}
#sitemap a,
#links a{
  display:inline-block;
  padding:9px 18px;
  border-radius:var(--radius-pill);
  font-size:.88rem;
  font-weight:500;
  color:var(--text-soft);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:transform .28s var(--ease),color .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
#sitemap a:hover,
#links a:hover{
  color:#fff;
  background:var(--brand-gradient);
  border-color:transparent;
  transform:translateY(-3px);
  box-shadow:0 10px 22px rgba(255,107,157,.32);
}

/* ============ UPDATES ============ */
#updates ul{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:10px;
}
#updates li{
  padding:12px 18px;
  border-radius:var(--radius);
  background:var(--surface-solid);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
#updates li:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow-md);
}

/* ============ FOOTER ============ */
footer[role="contentinfo"]{
  margin-top:20px;
  padding:44px 20px 34px;
  background:linear-gradient(180deg,rgba(255,107,157,.08),rgba(176,107,255,.12));
  border-top:1px solid var(--border);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.footer-inner{
  max-width:var(--maxw);
  margin:0 auto;
  text-align:center;
  color:var(--text-soft);
  font-size:.88rem;
}
.footer-inner p{margin:.5em 0;color:var(--text-soft);}
.footer-inner nav ul{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px 20px;
  list-style:none;
  padding:0;
  margin:16px 0;
}
.footer-inner nav a{
  color:var(--text-soft);
  position:relative;
  padding-bottom:2px;
}
.footer-inner nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand-gradient);
  transform:scaleX(0);
  transition:transform .3s var(--ease);
}
.footer-inner nav a:hover{color:var(--brand-pink);}
.footer-inner nav a:hover::after{transform:scaleX(1);}

/* ============ BACK TO TOP ============ */
.back-to-top{
  position:fixed;
  right:22px;
  bottom:26px;
  z-index:900;
  cursor:pointer;
  font-family:inherit;
  font-size:.82rem;
  font-weight:600;
  color:#fff;
  padding:12px 18px;
  border:0;
  border-radius:var(--radius-pill);
  background:var(--brand-gradient);
  background-size:170% 170%;
  box-shadow:0 10px 26px rgba(255,107,157,.4);
  opacity:0;
  visibility:hidden;
  transform:translateY(18px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s,background-position .5s var(--ease),box-shadow .3s var(--ease);
}
.back-to-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.back-to-top:hover{
  background-position:100% 100%;
  box-shadow:0 16px 34px rgba(176,107,255,.48);
  transform:translateY(-4px);
}

/* ============ SCROLL ANIMATION ============ */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(26px);}
  to{opacity:1;transform:translateY(0);}
}

.reveal{
  opacity:0;
  transform:translateY(30px);
  transition:opacity .75s var(--ease),transform .75s var(--ease);
  will-change:opacity,transform;
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(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;
  }
  .reveal{opacity:1;transform:none;}
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .header-inner{gap:12px;}
  .main-nav{order:3;flex:1 1 100%;}
  .main-nav ul{justify-content:flex-start;}
  .site-search{flex:1 1 200px;}
}

@media (max-width:768px){
  :root{--header-h:64px;}
  body{font-size:15px;}
  .header-inner{padding:10px 14px;}
  .brand-logo{width:38px;height:38px;border-radius:12px;}
  .brand-name{font-size:1.08rem;}
  .main-nav ul{gap:2px;}
  .main-nav a{padding:6px 10px;font-size:.84rem;}
  .site-search{flex:1 1 100%;order:4;}
  .theme-toggle{padding:8px 13px;font-size:.8rem;}
  main{padding:16px 14px 48px;gap:22px;}
  main > section{padding:22px 16px;border-radius:var(--radius);}
  main > section > h2{padding-left:14px;}
  main > section > h2::before{width:5px;}
  .hero .slide{padding:32px 20px;}
  .hero .cta{width:100%;text-align:center;padding:13px 20px;}
  .back-to-top{right:14px;bottom:16px;padding:10px 15px;font-size:.78rem;}
  #products ul li,
  #howto ul li,
  #howto ol li{padding:11px 14px 11px 40px;}
  #news article,
  #articles article{padding:16px 16px;}
}

@media (max-width:480px){
  h1{font-size:1.42rem;}
  h2{font-size:1.22rem;}
  .brand-name{display:none;}
  .main-nav a{padding:5px 8px;font-size:.8rem;}
  .site-search button{padding:7px 13px;}
  #sitemap a,
  #links a{padding:8px 14px;font-size:.82rem;}
  blockquote{padding:.9em 1em;}
}

@media (min-width:1400px){
  :root{--maxw:1280px;}
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{
  border-radius:8px;
  background:linear-gradient(180deg,var(--brand-pink),var(--brand-purple));
  border:2px solid transparent;
  background-clip:content-box;
}
::-webkit-scrollbar-thumb:hover{
  background:linear-gradient(180deg,var(--brand-purple),var(--brand-pink));
  background-clip:content-box;
}

::selection{
  background:rgba(255,107,157,.28);
  color:var(--text);
}

:focus-visible{
  outline:3px solid rgba(255,107,157,.55);
  outline-offset:2px;
  border-radius:6px;
}