*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:"Source Sans Pro","思源黑体","Noto Sans SC",sans-serif;background:#F7F3EB;color:#1A1A2E;line-height:1.75;min-height:100vh;overflow-x:hidden}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:#3D3BFF;text-decoration:none;transition:color .2s ease}
a:hover{color:#FF6A00}
ul,ol{list-style:none}
:focus-visible{outline:3px solid #FF6A00;outline-offset:3px}

:root{
  --color-primary:#3D3BFF;
  --color-accent:#FF6A00;
  --color-gray:#6B7280;
  --color-success:#4E9F7A;
  --color-terracotta:#C9755A;
  --color-bg:#F7F3EB;
  --color-dark:#1A1A2E;
  --color-border:#E5E7EB;
  --color-white:#ffffff;
  --header-h:72px;
  --container-w:1200px;
  --space-xs:.5rem;--space-sm:1rem;--space-md:2rem;--space-lg:3rem;--space-xl:5rem;
  --radius-sm:8px;--radius-md:16px;--radius-lg:28px;
  --shadow-soft:0 8px 30px rgba(26,26,46,.08);
  --shadow-strong:0 12px 40px rgba(26,26,46,.16);
  --font-heading:"Noto Sans SC SemiBold","微软雅黑",sans-serif;
  --font-mono:"Roboto Mono",Consolas,monospace;
}

.skip-link{
  position:fixed;top:0;left:0;z-index:10000;transform:translateY(-120%);
  background:#3D3BFF;color:#fff;padding:.6rem 1.2rem;border-radius:0 0 12px 0;font-weight:700;transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:4px;z-index:9999;background:transparent;pointer-events:none;
}
.scroll-progress span{
  display:block;height:100%;width:0;background:linear-gradient(90deg,#3D3BFF,#FF6A00);border-radius:0 2px 2px 0;
}

.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--header-h);
  background:rgba(247,243,235,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--color-border);transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(26,26,46,.1)}
.site-header-inner{
  display:flex;align-items:center;justify-content:space-between;max-width:var(--container-w);
  margin:0 auto;padding:0 2rem;height:100%;position:relative;
}
.site-brand{display:flex;align-items:center;gap:.75rem;color:var(--color-dark);flex-shrink:0}
.brand-mark{position:relative;display:block;width:38px;height:38px;flex:none}
.brand-mark::before{
  content:"";position:absolute;inset:0;background:var(--color-primary);
  border-radius:8px 20px 8px 20px;transform:rotate(12deg);
}
.brand-mark::after{
  content:"P";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;font-weight:800;font-family:var(--font-mono);
}
.brand-mark-dot{position:absolute;background:#F7F3EB;border-radius:50%;width:5px;height:5px;z-index:1}
.brand-mark-dot.dot-1{top:8px;left:7px}
.brand-mark-dot.dot-2{top:8px;right:7px}
.brand-mark-dot.dot-3{bottom:8px;left:7px}
.brand-mark-dot.dot-4{bottom:8px;right:7px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;letter-spacing:.02em}
.brand-sub{font-family:var(--font-mono);font-size:.58rem;color:var(--color-gray);letter-spacing:.16em;text-transform:uppercase}

.site-nav{margin-left:auto}
.nav-list{display:flex;gap:.2rem}
.nav-link{
  font-family:var(--font-heading);font-size:.9rem;font-weight:600;padding:.55rem .9rem;
  border-radius:40px;color:var(--color-dark);white-space:nowrap;letter-spacing:.02em;
}
.nav-link:hover{background:rgba(61,59,255,.08);color:var(--color-primary)}
.nav-link[aria-current="page"]{
  background:var(--color-primary);color:#fff;
}
.nav-link[aria-current="page"]:hover{color:#fff}

.header-tools{display:flex;align-items:center;gap:.5rem}
.tool-btn{
  display:flex;align-items:center;gap:.45rem;background:transparent;border:none;cursor:pointer;
  padding:.5rem .8rem;border-radius:40px;color:var(--color-dark);font-size:.85rem;font-weight:600;
  transition:background .2s ease,color .2s ease;
}
.tool-btn:hover{background:rgba(61,59,255,.08);color:var(--color-primary)}
.tool-label{white-space:nowrap}
.tool-icon{width:18px;height:18px;display:grid;place-items:center}
.star-shape{width:14px;height:14px;background:var(--color-accent);clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}
.search-shape{width:14px;height:14px;border:2px solid var(--color-dark);border-radius:50%;position:relative}
.search-shape::after{content:"";position:absolute;width:7px;height:2px;background:var(--color-dark);bottom:-4px;right:-6px;transform:rotate(45deg)}

.nav-toggle{
  display:none;align-items:center;gap:.45rem;background:var(--color-primary);border:none;
  color:#fff;font-weight:600;padding:.5rem .9rem;border-radius:40px;cursor:pointer;margin-left:.2rem;
}
.nav-toggle-box{width:16px;height:12px;position:relative;display:block}
.nav-toggle-line{position:absolute;left:0;width:16px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .25s ease,top .25s ease}
.nav-toggle-line:nth-child(1){top:0}
.nav-toggle-line:nth-child(2){top:5px}
.nav-toggle-line:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1){top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3){top:5px;transform:rotate(-45deg)}

.search-layer{
  position:absolute;top:calc(var(--header-h) + 1px);left:0;right:0;background:var(--color-dark);
  color:#fff;box-shadow:var(--shadow-strong);z-index:999;
}
.search-layer-inner{max-width:var(--container-w);margin:0 auto;padding:1.5rem 2rem;display:flex;align-items:baseline;gap:1.5rem}
.search-layer-title{font-family:var(--font-heading);font-size:1.2rem}
.search-layer-note{font-size:.9rem;color:rgba(255,255,255,.7)}

.content-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(420px,92vw);z-index:3000;
  background:var(--color-bg);box-shadow:var(--shadow-strong);padding:0;
  display:flex;flex-direction:column;transform:translateX(0);transition:transform .3s ease;
}
.content-panel[hidden]{display:none}
.panel-header{
  display:flex;align-items:center;justify-content:space-between;padding:1.5rem 1.8rem;border-bottom:1px solid var(--color-border);
}
.panel-title{font-family:var(--font-heading);font-size:1.3rem;font-weight:700}
.panel-close{
  width:38px;height:38px;border:1px solid var(--color-border);background:#fff;border-radius:50%;
  font-size:1.2rem;cursor:pointer;color:var(--color-dark);transition:all .2s ease;
}
.panel-close:hover{background:var(--color-accent);border-color:var(--color-accent);color:#fff;transform:rotate(90deg)}
.panel-body{padding:1.8rem;flex:1;overflow-y:auto}
.panel-empty{font-weight:700;margin-bottom:.6rem}
.panel-tip{color:var(--color-gray);font-size:.9rem}
.panel-backdrop{position:fixed;inset:0;background:rgba(26,26,46,.45);z-index:2999}

.site-footer{
  background:var(--color-dark);color:rgba(255,255,255,.82);margin-top:0;position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:-60px;right:-40px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,59,255,.25),transparent 65%);pointer-events:none;
}
.site-footer::after{
  content:"";position:absolute;bottom:-80px;left:-30px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,0,.15),transparent 65%);pointer-events:none;
}
.footer-top{
  max-width:var(--container-w);margin:0 auto;padding:3.5rem 2rem 2rem;
  display:grid;grid-template-columns:1.4fr .7fr .7fr .7fr 1.1fr;gap:2rem;position:relative;z-index:1;
}
.footer-brand{display:flex;flex-direction:column;gap:1rem}
.footer-logo{display:flex;align-items:center;gap:.7rem;color:#fff;font-weight:700;font-size:1.2rem}
.footer-logo:hover{color:#fff}
.footer-brand .brand-mark{width:34px;height:34px}
.footer-brand .brand-mark::before{background:var(--color-accent)}
.footer-brand .brand-mark::after{content:"P";color:var(--color-dark)}
.footer-brand .brand-mark-dot{background:var(--color-dark)}
.footer-trust{font-size:.87rem;color:rgba(255,255,255,.65);max-width:34ch;line-height:1.8}
.footer-col-title{
  font-family:var(--font-heading);font-size:.72rem;color:rgba(255,255,255,.45);
  letter-spacing:.18em;text-transform:uppercase;margin-bottom:1.2rem;position:relative;padding-bottom:.5rem;
}
.footer-col-title::after{content:"";position:absolute;left:0;bottom:0;width:22px;height:3px;background:var(--color-accent);border-radius:2px}
.footer-links{display:flex;flex-direction:column;gap:.55rem}
.footer-links a,.footer-contact-list a{color:rgba(255,255,255,.78);font-size:.9rem;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover,.footer-contact-list a:hover{color:#fff;padding-left:4px}
.footer-contact-list{display:flex;flex-direction:column;gap:.55rem;font-size:.9rem;color:rgba(255,255,255,.78)}
.footer-contact-list li{line-height:1.5}
.footer-bottom{
  max-width:var(--container-w);margin:0 auto;padding:1.5rem 2rem;
  border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;align-items:center;
  gap:1rem;flex-wrap:wrap;color:rgba(255,255,255,.55);font-size:.82rem;position:relative;z-index:1;
}
.footer-icp{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em}
.footer-copyright{font-family:var(--font-mono);font-size:.78rem}

#main-content{display:block;min-height:60vh;padding-top:var(--header-h)}
.page-container{max-width:var(--container-w);margin:0 auto;padding:0 2rem}
.section{padding:var(--space-xl) 0;position:relative}
.section[data-section-index]{
  position:relative;
}
.section[data-section-index]::before{
  content:attr(data-section-index);position:absolute;top:.6rem;left:0;
  font-family:var(--font-mono);font-size:clamp(3rem,7vw,6rem);font-weight:700;color:rgba(61,59,255,.14);line-height:1;pointer-events:none;
}
.section[data-section-index] > *{position:relative;z-index:1}

.breadcrumb{
  padding:1rem 0;font-size:.85rem;border-bottom:1px solid var(--color-border);margin-bottom:2rem;
}
.breadcrumb a{color:var(--color-gray)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{margin:0 .6rem;color:var(--color-gray)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  font-family:var(--font-heading);font-size:.92rem;font-weight:700;
  padding:.8rem 1.8rem;border-radius:80px;border:none;cursor:pointer;transition:all .25s ease;
}
.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 6px 22px rgba(61,59,255,.28)}
.btn-primary:hover{background:#2D2BD9;color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--color-accent);color:#fff;box-shadow:0 6px 22px rgba(255,106,0,.28)}
.btn-accent:hover{background:#E05E00;color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--color-primary);border:1.5px solid var(--color-primary)}
.btn-outline:hover{background:rgba(61,59,255,.08)}

.card{
  background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);
  padding:1.8rem;box-shadow:var(--shadow-soft);transition:transform .3s ease,box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-strong)}
.card-number{font-family:var(--font-mono);font-size:.78rem;color:var(--color-accent);letter-spacing:.12em}
.card-title{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;margin:.5rem 0 .8rem}
.card-text{color:var(--color-gray);font-size:.92rem;line-height:1.7}

.image-opportunity{
  position:relative;background:linear-gradient(145deg,#E5E7EB,#F7F3EB);border:1px dashed var(--color-gray);
  border-radius:var(--radius-md);min-height:160px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;color:var(--color-gray);font-size:.85rem;
}
.image-opportunity::before{
  content:"";position:absolute;width:120%;height:120%;top:-10%;left:-5%;
  background:linear-gradient(115deg,transparent 30%,rgba(61,59,255,.08) 38%,rgba(255,106,0,.08) 45%,transparent 52%);
  animation:sweep 6s ease-in-out infinite;pointer-events:none;
}
.image-opportunity.small{min-height:100px;border-radius:var(--radius-sm)}
.image-opportunity.large{min-height:280px;border-radius:var(--radius-lg)}
.image-opportunity.tall{min-height:360px}
@keyframes sweep{0%,100%{transform:translateX(-8%)}50%{transform:translateX(8%)}}

.deco-dice{position:relative;width:56px;height:56px;background:var(--color-primary);border-radius:14px;display:inline-block;transform:rotate(-6deg)}
.deco-dice::before,.deco-dice::after{content:"";position:absolute;background:#fff;border-radius:3px}
.deco-dice::before{width:8px;height:8px;top:12px;left:12px;box-shadow:0 20px 0 #fff}
.deco-dice::after{width:8px;height:8px;bottom:12px;right:12px;box-shadow:-20px 0 0 #fff}
.deco-orb{position:absolute;border-radius:50%;pointer-events:none;opacity:.18}
.deco-mini-panda{display:block;width:58px;height:58px;position:relative}
.deco-mini-panda::before{content:"";position:absolute;width:46px;height:38px;background:var(--color-dark);border-radius:46% 46% 40% 40%;left:6px;top:10px}
.deco-mini-panda::after{content:"";position:absolute;width:20px;height:14px;background:var(--color-dark);border-radius:50%;top:2px;left:4px;box-shadow:34px 0 0 var(--color-dark)}
.deco-mini-panda span{position:absolute;z-index:1}
.deco-mini-panda span:nth-child(1){width:8px;height:8px;background:var(--color-dark);border-radius:50%;top:18px;left:10px;box-shadow:0 0 0 3px #fff}
.deco-mini-panda span:nth-child(2){width:8px;height:8px;background:var(--color-dark);border-radius:50%;top:18px;left:40px;box-shadow:0 0 0 3px #fff}

[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s ease}
[data-reveal].is-revealed{opacity:1;transform:translateY(0)}

.tab-list{display:flex;flex-wrap:wrap;gap:.5rem}
.tab-btn{background:#fff;border:1px solid var(--color-border);border-radius:60px;padding:.6rem 1.4rem;cursor:pointer;font-weight:600;font-size:.88rem;color:var(--color-dark);transition:all .2s ease}
.tab-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}
.tab-btn[aria-selected="true"]{background:var(--color-primary);border-color:var(--color-primary);color:#fff}
.tab-panel{padding-top:1.5rem}
.tab-panel[hidden]{display:none}

.accordion-item{border:1px solid var(--color-border);border-radius:14px;background:#fff;overflow:hidden}
.accordion-btn{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:1rem;
  background:transparent;border:none;padding:1.2rem 1.4rem;cursor:pointer;text-align:left;font-weight:700;font-family:var(--font-heading);
}
.accordion-btn::after{
  content:"+";font-size:1.4rem;line-height:1;color:var(--color-primary);transition:transform .25s ease;
}
.accordion-item[data-open] .accordion-btn::after{content:"−";color:var(--color-accent)}
.accordion-content{padding:0 1.4rem 1.4rem;color:var(--color-gray);display:none}
.accordion-item[data-open] .accordion-content{display:block}

@media (max-width: 840px){
  .site-header-inner{padding:0 1rem;gap:.5rem}
  .brand-sub{display:none}
  .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    background:var(--color-bg);z-index:1500;transform:translateX(100%);
    transition:transform .3s ease;visibility:hidden;
  }
  .site-nav[data-open]{transform:translateX(0);visibility:visible}
  .nav-list{flex-direction:column;gap:.4rem;padding:2rem 1.5rem}
  .nav-link{display:block;font-size:1.15rem;padding:1rem 1.2rem;border-radius:16px}
  .nav-toggle{display:flex}
  .tool-label{display:none}
  .tool-btn{padding:.5rem .65rem}
  .footer-top{grid-template-columns:1fr 1fr;gap:2rem}
  .footer-brand{grid-column:1/-1}
  .search-layer-inner{flex-direction:column;gap:.5rem;padding:1.2rem 1rem}
  .section{padding:var(--space-lg) 0}
  .page-container{padding:0 1rem}
}

@media (max-width: 560px){
  :root{--header-h:62px}
  .brand-name{font-size:1rem}
  .site-header-inner{padding:0 .8rem}
  .header-tools{gap:.1rem}
  .nav-toggle-label{display:none}
  .nav-toggle{padding:.55rem .7rem}
  .footer-top{grid-template-columns:1fr;gap:1.8rem}
  .footer-bottom{flex-direction:column;text-align:center}
  .card{padding:1.2rem}
  .search-layer-title{font-size:1rem}
}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none}
  .site-nav,.content-panel,.search-layer{transition:none}
}
```