/* =========================
   淡色科技风 - 全局变量
========================= */
:root{
  --bg: #f7f9ff;
  --bg2:#fbfcff;
  --text:#101828;
  --muted:#667085;

  --card: rgba(255,255,255,.70);
  --card2: rgba(255,255,255,.55);
  --border: rgba(16,24,40,.10);

  --p1:#7c6cff;
  --p2:#2dd4bf;
  --p3:#60a5fa;

  --shadow: 0 18px 40px rgba(16,24,40,.10);
  --shadow2: 0 10px 24px rgba(16,24,40,.08);

  --radius: 18px;
  --radius2: 26px;
  --max: 1180px;

  --ease: cubic-bezier(.2,.8,.2,1);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC","Microsoft YaHei", sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 700px at 15% 10%, rgba(124,108,255,.16), transparent 60%),
              radial-gradient(1000px 600px at 85% 25%, rgba(45,212,191,.14), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: rgba(124,108,255,.10);
  border: 1px solid rgba(124,108,255,.18);
  padding: .15em .4em;
  border-radius: 10px;
}

/* =========================
   背景光晕
========================= */
.bg-orbs{ position:fixed; inset:0; pointer-events:none; z-index:-1; }
.orb{
  position:absolute;
  filter: blur(28px);
  opacity:.55;
  border-radius: 50%;
  transform: translate3d(0,0,0);
  animation: floaty 10s var(--ease) infinite;
}
.o1{ width:520px; height:520px; left:-180px; top:120px; background: rgba(124,108,255,.26); }
.o2{ width:440px; height:440px; right:-140px; top:80px;  background: rgba(45,212,191,.22); animation-duration: 12s; }
.o3{ width:360px; height:360px; left:40%; bottom:-180px; background: rgba(96,165,250,.18); animation-duration: 14s; }

@keyframes floaty{
  0%,100%{ transform: translateY(0) translateX(0); }
  50%{ transform: translateY(-18px) translateX(10px); }
}

/* =========================
   容器/通用
========================= */
.container{
  width:min(100% - 36px, var(--max));
  margin-inline:auto;
}

.section{
  padding: 76px 0;
}
.section-alt{
  background: linear-gradient(180deg, rgba(255,255,255,.45), rgba(255,255,255,.22));
  border-top: 1px solid rgba(16,24,40,.06);
  border-bottom: 1px solid rgba(16,24,40,.06);
}

.section-head{
  margin-bottom: 26px;
}
.section-head h2{
  margin:0 0 10px;
  font-size: clamp(24px, 2.1vw, 34px);
  letter-spacing: -.02em;
}
.section-head p{
  margin:0;
  color:var(--muted);
  line-height:1.7;
}

/* =========================
   顶部导航
========================= */
.site-header{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(247,249,255,.72);
  border-bottom: 1px solid rgba(16,24,40,.07);
}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-icon{
  border-radius: 10px;
  box-shadow: 0 10px 20px rgba(16,24,40,.12);
  background:#fff;
}
.brand-text strong{
  display:block;
  font-size: 14px;
  letter-spacing:.02em;
}
.brand-text em{
  display:block;
  font-style:normal;
  font-size: 12px;
  color: var(--muted);
  margin-top: -2px;
}

.nav{
  display:flex;
  align-items:center;
  gap:18px;
}
.nav a{
  color: rgba(16,24,40,.82);
  font-size: 14px;
  padding: 10px 10px;
  border-radius: 12px;
  transition: background .18s var(--ease), transform .18s var(--ease);
}
.nav a:hover{
  background: rgba(124,108,255,.10);
  transform: translateY(-1px);
}
.nav .nav-cta{
  background: linear-gradient(135deg, rgba(124,108,255,.92), rgba(45,212,191,.82));
  color:#fff;
  box-shadow: var(--shadow2);
  padding: 10px 14px;
}

.nav-toggle{
  display:none;
  width:44px;
  height:40px;
  border: 1px solid rgba(16,24,40,.10);
  background: rgba(255,255,255,.65);
  border-radius: 14px;
  cursor:pointer;
  box-shadow: 0 10px 20px rgba(16,24,40,.06);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background: rgba(16,24,40,.70);
  margin: 5px auto;
  border-radius: 99px;
}

.nav-mobile{
  width:min(100% - 36px, var(--max));
  margin: 0 auto 14px;
  padding: 12px;
  border: 1px solid rgba(16,24,40,.08);
  background: rgba(255,255,255,.70);
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(16,24,40,.08);
}
.nav-mobile a{
  display:block;
  padding: 12px 12px;
  border-radius: 14px;
  color: rgba(16,24,40,.85);
}
.nav-mobile a:hover{ background: rgba(124,108,255,.10); }
.nav-mobile .nav-cta{
  margin-top: 6px;
  background: linear-gradient(135deg, rgba(124,108,255,.92), rgba(45,212,191,.82));
  color:#fff;
}

/* =========================
   Hero
========================= */
.hero{
  padding: 70px 0 30px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 34px;
  align-items:center;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.70);
  border: 1px solid rgba(16,24,40,.08);
  box-shadow: 0 14px 28px rgba(16,24,40,.06);
  color: rgba(16,24,40,.78);
  font-size: 13px;
  margin:0 0 14px;
}
.badge img{ border-radius: 6px; background:#fff; }

.hero h1{
  margin: 0 0 12px;
  font-size: clamp(30px, 3.3vw, 48px);
  line-height: 1.15;
  letter-spacing: -.03em;
}
.grad-text{
  background: linear-gradient(135deg, var(--p1), var(--p2), var(--p3));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.hero-desc{
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.85;
  font-size: 15px;
  max-width: 52ch;
}

.hero-actions{
  display:flex;
  align-items:center;
  gap: 12px;
  margin-bottom: 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(16,24,40,.10);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
  font-weight: 650;
  letter-spacing: .01em;
  font-size: 14px;
  user-select:none;
}
.btn-primary{
  border: none;
  color:#fff;
  background: linear-gradient(135deg, rgba(124,108,255,.96), rgba(45,212,191,.86));
  box-shadow: var(--shadow2);
}
.btn-primary:hover{
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(124,108,255,.20);
}
.btn-ghost{
  background: rgba(255,255,255,.65);
}
.btn-ghost:hover{
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(16,24,40,.10);
}

.hero-metrics{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.card-lite{
  background: rgba(255,255,255,.65);
  border: 1px solid rgba(16,24,40,.08);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 16px 36px rgba(16,24,40,.06);
}
.metric strong{
  display:block;
  font-size: 14px;
  margin-bottom: 4px;
}
.metric span{
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

.hero-art{
  position:relative;
  border-radius: var(--radius2);
  background: linear-gradient(135deg, rgba(255,255,255,.78), rgba(255,255,255,.48));
  border: 1px solid rgba(16,24,40,.08);
  box-shadow: var(--shadow);
  padding: 18px;
  overflow:hidden;
}
.hero-art img{
  border-radius: 18px;
  background: rgba(255,255,255,.55);
  border: 1px solid rgba(16,24,40,.06);
}

.art-glow{
  position:absolute;
  inset:-40%;
  background:
    radial-gradient(circle at 30% 30%, rgba(124,108,255,.28), transparent 45%),
    radial-gradient(circle at 70% 60%, rgba(45,212,191,.24), transparent 50%),
    radial-gradient(circle at 55% 25%, rgba(96,165,250,.18), transparent 55%);
  filter: blur(14px);
  transform: rotate(8deg);
  animation: glow 8s var(--ease) infinite;
}
@keyframes glow{
  0%,100%{ opacity:.72; transform: rotate(8deg) scale(1); }
  50%{ opacity:.90; transform: rotate(12deg) scale(1.03); }
}

.art-badges{
  position:absolute;
  left: 22px;
  bottom: 22px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.chip{
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(16,24,40,.10);
  box-shadow: 0 10px 20px rgba(16,24,40,.06);
}

/* 浮动卡片动效 */
.card-float{
  animation: floatCard 7s var(--ease) infinite;
}
@keyframes floatCard{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-10px); }
}

/* =========================
   卡片/网格
========================= */
.grid-2{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.grid-4{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.card{
  background: var(--card);
  border: 1px solid rgba(16,24,40,.08);
  border-radius: var(--radius2);
  padding: 18px 18px;
  box-shadow: 0 18px 40px rgba(16,24,40,.08);
  backdrop-filter: blur(12px);
}
.card h3{
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: -.01em;
}
.card p{
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 14px;
}

.mini-card{
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(16,24,40,.08);
  border-radius: var(--radius2);
  padding: 16px;
  box-shadow: 0 16px 34px rgba(16,24,40,.06);
}
.mini-card h3{
  margin: 0 0 6px;
  font-size: 16px;
}
.mini-card p{
  margin: 0 0 10px;
  color: var(--muted);
  line-height:1.75;
  font-size: 13.5px;
}
.mini-link{
  display:inline-block;
  font-weight: 650;
  font-size: 13.5px;
  color: rgba(124,108,255,.98);
}

.hover-lift{
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}
.hover-lift:hover{
  transform: translateY(-6px);
  box-shadow: 0 22px 54px rgba(16,24,40,.12);
}

/* ticks 列表 */
.ticks{ margin:0; padding-left: 0; list-style:none; }
.ticks li{
  position:relative;
  padding-left: 24px;
  margin: 8px 0;
  color: rgba(16,24,40,.75);
  line-height: 1.6;
  font-size: 13.5px;
}
.ticks li::before{
  content:"";
  position:absolute;
  left:0;
  top: .45em;
  width: 14px;
  height: 14px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(124,108,255,.95), rgba(45,212,191,.78));
  box-shadow: 0 10px 18px rgba(124,108,255,.18);
}

/* steps */
.steps{ display:grid; gap:10px; margin-top: 10px; }
.step{
  display:flex;
  align-items:center;
  gap:10px;
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255,255,255,.55);
  border: 1px solid rgba(16,24,40,.08);
  color: rgba(16,24,40,.78);
}
.step span{
  width: 34px;
  height: 28px;
  border-radius: 12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-weight: 800;
  background: linear-gradient(135deg, rgba(96,165,250,.92), rgba(124,108,255,.88));
}

/* pills */
.pill-row{ display:flex; flex-wrap:wrap; gap:10px; }
.pill{
  font-size: 12.5px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.60);
  border: 1px solid rgba(16,24,40,.08);
  color: rgba(16,24,40,.76);
}

/* 有序列表 */
.ol{
  margin: 0;
  padding-left: 18px;
  color: rgba(16,24,40,.78);
  line-height: 1.85;
  font-size: 14px;
}
.ol li{ margin: 6px 0; }
.ol a{ color: rgba(124,108,255,.98); font-weight: 650; }

.note{
  margin-top: 12px;
  padding: 12px 12px;
  border-radius: 16px;
  background: rgba(124,108,255,.08);
  border: 1px solid rgba(124,108,255,.14);
  color: rgba(16,24,40,.76);
  line-height: 1.75;
  font-size: 13.5px;
}

.cta-row{ display:flex; gap:12px; margin-top: 12px; }

/* =========================
   FAQ
========================= */
.faq{ display:grid; gap: 12px; }
.faq-item{
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(16,24,40,.08);
  border-radius: var(--radius2);
  box-shadow: 0 16px 34px rgba(16,24,40,.06);
  overflow:hidden;
}
.faq-item summary{
  cursor:pointer;
  padding: 16px 16px;
  font-weight: 750;
  outline:none;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-body{
  padding: 0 16px 16px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 14px;
}

/* =========================
   下载区
========================= */
.download-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 6px;
}
.dl-card{
  background: rgba(255,255,255,.70);
  border: 1px solid rgba(16,24,40,.08);
  border-radius: var(--radius2);
  padding: 16px;
  box-shadow: 0 18px 40px rgba(16,24,40,.06);
}
.dl-top{ display:flex; gap:6px; margin-bottom: 12px; }
.dl-dot{
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(16,24,40,.14);
}
.dl-card h3{ margin: 0 0 6px; font-size: 16px; }
.dl-card p{ margin: 0 0 12px; color: var(--muted); line-height:1.75; font-size: 13.5px; }
.dl-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 12px;
  border-radius: 14px;
  font-weight: 800;
  color:#fff;
  background: linear-gradient(135deg, rgba(124,108,255,.94), rgba(45,212,191,.82));
  box-shadow: 0 14px 28px rgba(124,108,255,.18);
}
.download-note{
  margin-top: 14px;
  color: rgba(16,24,40,.78);
  line-height: 1.75;
  font-size: 13.5px;
}

/* =========================
   文章区
========================= */
.prose{
  padding: 18px 18px;
}
.prose h3{
  margin: 0 0 10px;
  font-size: 18px;
}
.prose p{
  margin: 0 0 12px;
  color: rgba(16,24,40,.76);
  line-height: 1.9;
}
.prose .ticks{ margin: 10px 0 12px; }
.prose-foot{
  display:flex;
  align-items:center;
  gap:10px;
  padding-top: 12px;
  border-top: 1px solid rgba(16,24,40,.08);
  color: rgba(16,24,40,.70);
}
.prose-foot img{
  border-radius: 10px;
  background:#fff;
  border: 1px solid rgba(16,24,40,.10);
}
.prose-foot a{
  color: rgba(124,108,255,.98);
  font-weight: 750;
}

/* =========================
   页脚
========================= */
.footer{
  padding: 26px 0 40px;
  border-top: 1px solid rgba(16,24,40,.06);
  background: rgba(255,255,255,.35);
}
.footer-grid{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
}
.footer-brand img{
  border-radius: 12px;
  background:#fff;
  border: 1px solid rgba(16,24,40,.10);
  box-shadow: 0 10px 20px rgba(16,24,40,.08);
}
.muted{ color: var(--muted); margin: 4px 0 0; font-size: 13px; }

.footer-links{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.footer-links a{
  padding: 8px 10px;
  border-radius: 12px;
  color: rgba(16,24,40,.78);
}
.footer-links a:hover{
  background: rgba(124,108,255,.10);
}

.footer-meta{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.backtop{
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid rgba(16,24,40,.08);
  background: rgba(255,255,255,.60);
}
.backtop:hover{ transform: translateY(-1px); }

/* =========================
   响应式
========================= */
@media (max-width: 980px){
  .nav{ display:none; }
  .nav-toggle{ display:block; }

  .hero-grid{
    grid-template-columns: 1fr;
  }
  .hero-actions{ flex-wrap:wrap; }

  .hero-metrics{
    grid-template-columns: 1fr;
  }

  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .grid-4{ grid-template-columns: 1fr 1fr; }
  .download-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px){
  .grid-4{ grid-template-columns: 1fr; }
  .download-grid{ grid-template-columns: 1fr; }
  .section{ padding: 64px 0; }
}