:root{
  --purple:#5E2686;
  --purple-deep:#3B1754;
  --purple-ink:#2A1039;
  --purple-soft:#F3EDF8;
  --purple-line:#E2D4EE;
  --orange:#E8871E;
  --green:#2E9E5B;
  --ink:#231A2C;
  --ink-2:#5B5068;
  --ink-3:#8A8098;
  --white:#fff;
  --bg:#FBF9FD;
  --radius:18px;
  --shadow:0 10px 30px rgba(59,23,84,.08);
  --shadow-lg:0 22px 60px rgba(59,23,84,.16);
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}
.skip:focus{left:12px;top:12px;background:#fff;padding:8px 14px;border-radius:8px;z-index:99}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(251,249,253,.82);border-bottom:1px solid transparent;transition:.25s}
.nav.on{border-bottom-color:var(--purple-line);box-shadow:0 6px 24px rgba(59,23,84,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:36px;height:36px;border-radius:10px}
.brand-txt{display:flex;flex-direction:column;font-weight:800;font-size:17px;letter-spacing:.2px;line-height:1.2}
.brand-txt em{font-style:normal;font-weight:500;font-size:11px;color:var(--ink-3);letter-spacing:.4px}
.links{display:flex;align-items:center;gap:26px;font-size:14.5px;font-weight:600;color:var(--ink-2)}
.links a:hover{color:var(--purple)}
.btn-mini{background:var(--purple);color:#fff!important;padding:9px 18px;border-radius:999px;font-size:13.5px;transition:.2s}
.btn-mini:hover{background:var(--purple-deep);transform:translateY(-1px)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--purple-line);background:#fff;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}
.burger span{width:18px;height:2px;background:var(--purple);border-radius:2px;transition:.25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{position:relative;overflow:hidden;padding:74px 0 60px}
.hero-glow{position:absolute;inset:-180px -10% auto -10%;height:620px;
  background:radial-gradient(46% 50% at 72% 40%,rgba(94,38,134,.20),transparent 70%),
             radial-gradient(40% 46% at 22% 26%,rgba(232,135,30,.12),transparent 72%);
  pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--purple-soft);color:var(--purple);
  border:1px solid var(--purple-line);padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:700;letter-spacing:.3px}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(46,158,91,.16)}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.22;letter-spacing:-.5px;margin:18px 0 18px;font-weight:800}
.grad{background:linear-gradient(96deg,var(--purple) 10%,#8B4FB8 60%,var(--orange) 108%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:16px;color:var(--ink-2);max-width:560px;margin:0}
.hero-actions{display:flex;gap:12px;margin:26px 0 30px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.22s;border:1px solid transparent}
.btn.primary{background:var(--purple);color:#fff;box-shadow:0 12px 26px rgba(94,38,134,.28)}
.btn.primary:hover{background:var(--purple-deep);transform:translateY(-2px)}
.btn.ghost{background:#fff;color:var(--purple);border-color:var(--purple-line)}
.btn.ghost:hover{border-color:var(--purple);transform:translateY(-2px)}
.btn.light{background:#fff;color:var(--purple)}
.btn.line{border-color:rgba(255,255,255,.5);color:#fff}
.btn.line:hover{background:rgba(255,255,255,.12)}
.hero-facts{list-style:none;display:flex;gap:30px;flex-wrap:wrap;margin:0;padding:0}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts b{font-size:14.5px;color:var(--ink)}
.hero-facts span{font-size:12.5px;color:var(--ink-3)}

.hero-art{position:relative;display:flex;justify-content:center}
.icon-stage{position:relative;width:280px;height:280px;display:grid;place-items:center;border-radius:50%;
  background:radial-gradient(circle at 50% 45%,rgba(94,38,134,.16),rgba(94,38,134,0) 68%)}
.icon-stage::after{content:"";position:absolute;inset:14px;border-radius:50%;border:1px dashed rgba(94,38,134,.22);animation:spin 26s linear infinite}
.icon-stage img{width:220px;height:220px;border-radius:34px;filter:drop-shadow(0 24px 40px rgba(59,23,84,.26));animation:float 6s ease-in-out infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{50%{transform:translateY(-10px)}}
.pulse-card{position:absolute;right:-6px;bottom:-14px;width:216px;background:#fff;border-radius:16px;
  border:1px solid var(--purple-line);box-shadow:var(--shadow-lg);padding:14px 16px;font-size:13px}
.pulse-head{display:flex;align-items:center;gap:7px;font-weight:700;font-size:12px;color:var(--ink-2);letter-spacing:.4px;margin-bottom:8px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green);animation:blink 1.8s infinite}
@keyframes blink{50%{opacity:.25}}
.pulse-row{display:flex;justify-content:space-between;align-items:baseline;padding:3px 0;color:var(--ink-2)}
.pulse-row b{font-size:15px;font-variant-numeric:tabular-nums}
.t-orange{color:var(--orange)}
.t-green{color:var(--green)}
.t-purple{color:var(--purple)}
.pulse-bar{height:6px;border-radius:99px;background:var(--purple-soft);margin:9px 0 6px;overflow:hidden}
.pulse-bar i{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--green),var(--orange));animation:fill 2.6s ease-out forwards}
@keyframes fill{to{width:78%}}
.tiny{margin:0;font-size:10.5px;color:var(--ink-3);line-height:1.5}

/* strip */
.strip{background:var(--purple);color:#fff}
.strip-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:22px 24px}
.strip-inner div{display:flex;flex-direction:column;gap:1px}
.strip-inner b{font-size:11.5px;letter-spacing:1.2px;text-transform:uppercase;color:rgba(255,255,255,.62)}
.strip-inner span{font-size:13.5px;font-weight:600}

/* sections */
.sec{padding:88px 0}
.sec.alt{background:linear-gradient(180deg,#fff,var(--purple-soft) 62%,#fff)}
.sec-head{max-width:680px;margin:0 auto 44px;text-align:center}
.kicker{font-size:12px;font-weight:800;letter-spacing:2.4px;color:var(--purple);text-transform:uppercase}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin:12px 0 10px;letter-spacing:-.3px}
.sec-head p{color:var(--ink-2);margin:0;font-size:15px}
.note{text-align:center;color:var(--ink-3);font-size:12.5px;margin-top:34px}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--purple-line);border-radius:var(--radius);padding:28px;transition:.26s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(94,38,134,.34)}
.ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:22px;background:var(--purple-soft);margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0 0 12px;color:var(--ink-2);font-size:14.5px}
.ticks{list-style:none;margin:0;padding:0;display:grid;gap:5px}
.ticks li{position:relative;padding-left:20px;font-size:13.5px;color:var(--ink-2)}
.ticks li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--purple);opacity:.55}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:18px;counter-reset:s}
.step{position:relative;background:#fff;border-radius:var(--radius);padding:26px 28px 24px;border:1px solid var(--purple-line);box-shadow:var(--shadow)}
.step .num{position:absolute;top:22px;right:26px;font-size:34px;font-weight:800;color:var(--purple-soft);letter-spacing:-2px}
.step h3{margin:0 0 8px;font-size:18px;color:var(--purple-deep)}
.step p{margin:0 0 12px;color:var(--ink-2);font-size:14.5px;max-width:820px}
.tip{display:inline-block;background:var(--purple-soft);color:var(--purple);border-radius:10px;padding:8px 14px;font-size:13px;font-weight:600}
.ui-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.ui-card{background:#fff;border:1px dashed var(--purple-line);border-radius:14px;padding:18px}
.ui-card h4{margin:0 0 6px;font-size:14.5px;color:var(--purple)}
.ui-card p{margin:0;font-size:13px;color:var(--ink-2)}

/* table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--purple-line);background:#fff;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:620px}
th,td{padding:16px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--purple-soft)}
th{background:var(--purple);color:#fff;font-size:13px;letter-spacing:.6px;font-weight:700}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#FCFAFF}
td:first-child{color:var(--purple);white-space:nowrap}
td:nth-child(2){color:var(--ink-2)}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px}
.cmp{border-radius:var(--radius);padding:22px 24px;background:#fff;border-left:4px solid}
.cmp h4{margin:0 0 6px;font-size:15px}
.cmp p{margin:0;font-size:13.5px;color:var(--ink-2)}
.cmp.good{border-left-color:var(--green)}
.cmp.good h4{color:var(--green)}
.cmp.bad{border-left-color:var(--orange)}
.cmp.bad h4{color:var(--orange)}

/* timeline */
.timeline{position:relative;padding-left:8px}
.tl-item{position:relative;display:grid;grid-template-columns:96px 1fr;gap:22px;padding-bottom:26px}
.tl-item::before{content:"";position:absolute;left:47px;top:36px;bottom:0;width:2px;background:linear-gradient(var(--purple-line),transparent)}
.tl-item:last-child::before{display:none}
.tl-badge{position:relative;justify-self:center;width:64px;height:64px;border-radius:50%;display:grid;place-items:center;
  background:#fff;border:2px solid var(--purple-line);color:var(--purple);font-weight:800;font-size:12.5px;text-align:center;line-height:1.2}
.tl-item.now .tl-badge{background:var(--purple);color:#fff;border-color:var(--purple);box-shadow:0 10px 24px rgba(94,38,134,.28)}
.tl-body{background:#fff;border:1px solid var(--purple-line);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow)}
.tl-item.now .tl-body{border-color:rgba(94,38,134,.4)}
.tl-top{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.tl-top h3{margin:0;font-size:19px}
.chip{font-size:11.5px;font-weight:700;letter-spacing:.5px;color:var(--purple);background:var(--purple-soft);border-radius:999px;padding:3px 11px}
.tl-body ul{margin:0;padding-left:18px;color:var(--ink-2);font-size:14px}
.tl-body li{margin:3px 0}

/* faq */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
details{background:#fff;border:1px solid var(--purple-line);border-radius:14px;padding:4px 22px;box-shadow:var(--shadow)}
summary{cursor:pointer;list-style:none;font-weight:700;font-size:15px;padding:16px 30px 16px 0;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);color:var(--purple);font-size:20px;font-weight:600;transition:.2s}
details[open] summary::after{content:"–"}
details p{margin:0 0 16px;color:var(--ink-2);font-size:14px}

/* download */
.download{background:linear-gradient(135deg,var(--purple-deep),var(--purple) 58%,#7A3AA6);color:#fff;padding:64px 0}
.download-inner{display:flex;align-items:center;justify-content:space-between;gap:36px}
.download h2{margin:0 0 10px;font-size:clamp(24px,3vw,32px);color:#fff}
.download p{margin:0;color:rgba(255,255,255,.82);max-width:600px;font-size:14.5px}
.dl-actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.dl-icon{border-radius:30px;filter:drop-shadow(0 18px 30px rgba(0,0,0,.28))}

/* foot */
.foot{--foot-meta-size:12.5px;background:var(--purple-ink);color:rgba(255,255,255,.74);padding:38px 0}
.foot-inner{display:grid;gap:14px;text-align:center;justify-items:stretch}
.foot-inner>*{text-align:center}
.foot-brand{display:flex;align-items:center;justify-content:center;gap:9px;color:#fff;font-weight:700;font-size:14px}
.foot-brand img{border-radius:8px}
.foot-links{display:flex;gap:22px;flex-wrap:wrap;justify-content:center;font-size:13.5px}
.foot-links a:hover{color:#fff}
/* 版权行与备案号行共用一套排版口径：同字号、同行高、同字重、无上下边距 */
.copy,.icp{margin:0;padding:0;display:block;width:100%;
  font-size:var(--foot-meta-size);font-weight:400;line-height:1.6;
  letter-spacing:0;text-align:center;font-variant-numeric:tabular-nums}
.copy{color:rgba(255,255,255,.5)}
.icp{color:#fff;opacity:1}
.icp-link{color:#fff;opacity:1;text-decoration:none;
  display:inline-block;font:inherit;line-height:inherit;vertical-align:baseline}
.icp-link:hover{text-decoration:underline}

@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-art{order:-1}
  .pulse-card{right:0;bottom:-20px}
  .cards{grid-template-columns:1fr}
  .ui-cards{grid-template-columns:1fr 1fr}
  .strip-inner{grid-template-columns:1fr 1fr;gap:14px}
  .download-inner{flex-direction:column;text-align:center;align-items:center}
  .dl-actions{justify-content:center}
}
@media (max-width:720px){
  .links{position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:8px 18px 18px;border-bottom:1px solid var(--purple-line);box-shadow:0 18px 30px rgba(59,23,84,.1);
    display:none}
  .links.open{display:flex}
  .links a{padding:12px 4px;border-bottom:1px dashed var(--purple-soft)}
  .links a:last-child{border-bottom:none}
  .btn-mini{text-align:center;margin-top:10px}
  .burger{display:flex}
  .sec{padding:60px 0}
  .hero{padding:44px 0 40px}
  .icon-stage{width:220px;height:220px}
  .icon-stage img{width:170px;height:170px}
  .pulse-card{position:static;margin-top:24px;width:100%}
  .compare,.ui-cards{grid-template-columns:1fr}
  .tl-item{grid-template-columns:1fr;gap:12px}
  .tl-item::before{display:none}
  .tl-badge{justify-self:start;width:52px;height:52px;font-size:11px}
  .hero-facts{gap:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}