:root{--accent:#2F6BFF;--accent-2:#5B8CFF;--accent-deep:#1B4FE0;--accent-soft:#EDF2FF;--ink:#0B1220;--ink-2:#33415C;--ink-3:#667085;--ink-4:#98A2B3;--line:#E6EAF2;--line-soft:#F0F3F9;--bg:#FFFFFF;--bg-alt:#F7F9FC;--bg-deep:#070B14;--radius-lg:24px;--shadow-xs:0 1px 2px rgba(11,18,32,.04);--shadow-sm:0 2px 8px rgba(11,18,32,.05),0 1px 2px rgba(11,18,32,.04);--shadow:0 8px 28px rgba(11,18,32,.07),0 2px 6px rgba(11,18,32,.04);--font:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",Roboto,Arial,sans-serif;--mono:"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;--max:1200px;--ease:cubic-bezier(.22,.61,.36,1);--ease-out:cubic-bezier(.16,1,.3,1)}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.65;color:var(--ink-2);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--accent);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent-deep)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.22}
p{margin:0}
::selection{background:rgba(47,107,255,.16);color:var(--ink)}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* ========== 导航 ========== */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;display:flex;align-items:center;height:68px;background:rgba(255,255,255,.72);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid transparent;transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease)}
.nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(11,18,32,.02),0 6px 24px rgba(11,18,32,.04)}
.nav__inner{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:750;font-size:17px;letter-spacing:-.02em;flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand__mark{width:32px;height:32px;border-radius:9px;overflow:hidden;box-shadow:0 2px 8px rgba(47,107,255,.22);flex-shrink:0}
.brand__mark img{width:100%;height:100%;object-fit:cover}
.nav__links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{padding:8px 14px;border-radius:9px;color:var(--ink-2);font-size:14.5px;font-weight:500;transition:background .18s var(--ease),color .18s var(--ease)}
.nav__link:hover{background:var(--line-soft);color:var(--ink)}
.nav__cta{margin-left:8px;padding:9px 18px;border-radius:10px;background:var(--ink);color:#fff;font-size:14.5px;font-weight:600;box-shadow:var(--shadow-sm);transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease)}
.nav__cta:hover{background:#131E33;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.nav__toggle{display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav__toggle span{display:block;width:16px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav__toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav__toggle.is-open span:nth-child(2){opacity:0}
.nav__toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ========== Hero ========== */
.hero{position:relative;padding:152px 0 96px;overflow:hidden;background:linear-gradient(180deg,#FBFCFE 0%,#FFFFFF 62%)}
.hero__glow{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.hero__glow--1{width:620px;height:620px;top:-260px;left:50%;margin-left:-520px;background:radial-gradient(circle,rgba(47,107,255,.20),transparent 68%)}
.hero__glow--2{width:520px;height:520px;top:-180px;right:8%;background:radial-gradient(circle,rgba(122,92,255,.16),transparent 68%)}
.hero__glow--3{width:420px;height:420px;top:240px;left:4%;background:radial-gradient(circle,rgba(47,107,255,.10),transparent 70%)}
.hero__grid{position:absolute;inset:0;background-image:linear-gradient(to right,rgba(11,18,32,.035) 1px,transparent 1px),linear-gradient(to bottom,rgba(11,18,32,.035) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 80% 62% at 50% 0%,#000 32%,transparent 78%);mask-image:radial-gradient(ellipse 80% 62% at 50% 0%,#000 32%,transparent 78%)}
.hero__inner{position:relative;z-index:2;text-align:center;max-width:860px;margin:0 auto}
.pill{display:inline-flex;align-items:center;gap:8px;min-height:32px;max-width:100%;padding:6px 14px 6px 10px;border-radius:100px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-xs);font-size:13px;font-weight:500;line-height:1.35;color:var(--ink-2);margin-bottom:28px;white-space:nowrap}
.pill__dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:#12B76A;box-shadow:0 0 0 3px rgba(18,183,106,.16);animation:pulse 2.4s var(--ease) infinite}
.pill__sep{flex:0 0 auto;width:1px;height:12px;background:var(--line)}
.pill__muted{color:var(--ink-4);overflow:hidden;text-overflow:ellipsis}
@media(max-width:640px){.pill__sep,.pill__muted{display:none}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(18,183,106,.16)}50%{box-shadow:0 0 0 5px rgba(18,183,106,.06)}}
.hero h1{font-size:clamp(38px,5.6vw,68px);font-weight:800;letter-spacing:-.035em;line-height:1.1;margin-bottom:26px}
.hero h1 em{font-style:normal;background:linear-gradient(112deg,var(--accent) 0%,#7A5CFF 52%,var(--accent) 100%);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:flow 7s linear infinite}
@keyframes flow{0%{background-position:0% 50%}100%{background-position:200% 50%}}
.hero__sub{font-size:clamp(16px,1.9vw,19px);line-height:1.7;color:var(--ink-3);max-width:640px;margin:0 auto 40px}
.hero__actions{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:56px}

/* ========== 按钮 ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 26px;border-radius:12px;font-size:15.5px;font-weight:600;letter-spacing:-.01em;cursor:pointer;border:1px solid transparent;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);white-space:nowrap}
.btn svg{flex-shrink:0}
.btn--primary{background:linear-gradient(180deg,var(--accent-2),var(--accent));color:#fff;box-shadow:0 2px 4px rgba(47,107,255,.20),0 10px 28px rgba(47,107,255,.26),inset 0 1px 0 rgba(255,255,255,.24)}
.btn--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 4px 8px rgba(47,107,255,.22),0 16px 40px rgba(47,107,255,.32),inset 0 1px 0 rgba(255,255,255,.24)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn--ghost:hover{color:var(--ink);border-color:#D3DAE8;transform:translateY(-2px);box-shadow:var(--shadow)}

/* ========== Hero 统计 ========== */
.hero__stats{display:flex;align-items:stretch;justify-content:center;gap:0;padding:26px 0;border-radius:var(--radius-lg);background:rgba(255,255,255,.6);border:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow-sm);max-width:720px;margin:0 auto}
.hero__stat{flex:1;text-align:center;padding:0 12px;position:relative}
.hero__stat+.hero__stat::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:34px;background:var(--line)}
.hero__stat b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:780;color:var(--ink);letter-spacing:-.03em;line-height:1.2}
.hero__stat span{display:block;margin-top:4px;font-size:12.5px;color:var(--ink-4);font-weight:500}

/* ========== 区块 ========== */
.section{padding:104px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:76px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 60px}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.sec-head h2{font-size:clamp(28px,3.6vw,42px);font-weight:780;letter-spacing:-.03em;margin-bottom:16px}
.sec-head p{font-size:16.5px;color:var(--ink-3);line-height:1.7}

/* ========== 卡片 ========== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{position:relative;padding:30px 28px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-xs);transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out),border-color .3s var(--ease);overflow:hidden}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(47,107,255,.07),transparent 62%);opacity:0;transition:opacity .35s var(--ease);pointer-events:none}
.card:hover{transform:translateY(-4px);border-color:#DCE3F0;box-shadow:var(--shadow)}
.card:hover::after{opacity:1}
.card__icon{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,var(--accent-soft),#F8FAFF);border:1px solid #E2EAFF;color:var(--accent);margin-bottom:20px}
.card h3{font-size:18px;font-weight:700;letter-spacing:-.02em;margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.72;color:var(--ink-3)}
.card__meta{display:inline-flex;align-items:center;gap:6px;margin-top:18px;padding:4px 10px;border-radius:7px;background:var(--line-soft);font-size:12px;font-weight:600;color:var(--ink-3);font-family:var(--mono)}

/* ========== 功能清单 ========== */
.feature-group+.feature-group{margin-top:46px}
.feature-group__head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.feature-group__title{font-size:20px;font-weight:720;letter-spacing:-.02em;color:var(--ink)}
.feature-group__count{padding:3px 10px;border-radius:100px;background:var(--accent-soft);color:var(--accent-deep);font-size:12px;font-weight:700;font-family:var(--mono)}
.feature-group__line{flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 15px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:500;color:var(--ink-2);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);cursor:default}
.chip:hover{border-color:#C9D6EE;box-shadow:var(--shadow-sm);transform:translateY(-1px);color:var(--ink)}
.chip__dot{width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.55;flex-shrink:0}
.chip--tm .chip__dot{background:#7A5CFF;opacity:.75}

/* ========== 流程 ========== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding:32px 28px 30px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-xs);counter-increment:step}
.step::before{content:counter(step,decimal-leading-zero);display:block;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.04em;margin-bottom:16px}
.step h3{font-size:17.5px;font-weight:700;margin-bottom:9px}
.step p{font-size:14.5px;line-height:1.7;color:var(--ink-3)}

/* ========== CTA ========== */
.cta{position:relative;padding:88px 0;background:var(--bg-deep);overflow:hidden}
.cta__glow{position:absolute;width:900px;height:500px;left:50%;top:50%;transform:translate(-50%,-50%);background:radial-gradient(ellipse,rgba(47,107,255,.30),transparent 66%);filter:blur(60px);pointer-events:none}
.cta__grid{position:absolute;inset:0;background-image:linear-gradient(to right,rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 60% 60% at 50% 50%,#000,transparent 75%);mask-image:radial-gradient(ellipse 60% 60% at 50% 50%,#000,transparent 75%)}
.cta__inner{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.cta h2{color:#fff;font-size:clamp(28px,3.8vw,44px);font-weight:780;letter-spacing:-.03em;margin-bottom:18px}
.cta p{color:rgba(255,255,255,.62);font-size:16.5px;line-height:1.7;margin-bottom:38px}
.cta .btn--primary{box-shadow:0 2px 4px rgba(47,107,255,.3),0 14px 40px rgba(47,107,255,.38),inset 0 1px 0 rgba(255,255,255,.22)}
.cta .btn--ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);color:#fff;box-shadow:none}
.cta .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff}

/* ========== 页脚 ========== */
.foot{padding:64px 0 0;background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.07)}
.foot__grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:40px;padding-bottom:52px}
.foot__brand .brand{color:#fff}
.foot__brand .brand:hover{color:#fff}
.foot__desc{margin-top:16px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.44);max-width:300px}
.foot__col h4{color:rgba(255,255,255,.9);font-size:13.5px;font-weight:650;letter-spacing:.01em;margin-bottom:16px}
.foot__col a,.foot__col span{display:block;font-size:14px;color:rgba(255,255,255,.44);padding:6px 0;transition:color .18s var(--ease)}
.foot__col a:hover{color:rgba(255,255,255,.9)}
.foot__bar{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding:22px 0;border-top:1px solid rgba(255,255,255,.07);font-size:13px;color:rgba(255,255,255,.34)}

/* ========== 滚动入场 ========== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}.hero h1 em,.pill__dot{animation:none}}
@media print{.nav,.hero__glow,.hero__grid,.cta__glow,.cta__grid,.foot{display:none}body{color:#000}.hero{padding:24px 0}.reveal{opacity:1;transform:none}}

/* ========== 响应式 ========== */
@media(max-width:1024px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .foot__grid{grid-template-columns:1fr 1fr;gap:36px}
  .foot__brand{grid-column:1/-1}
}
@media(max-width:860px){
  .nav__links{position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;padding:12px 20px 20px;background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);box-shadow:0 12px 32px rgba(11,18,32,.08);transform:translateY(-12px);opacity:0;visibility:hidden;transition:transform .26s var(--ease),opacity .22s var(--ease),visibility .22s var(--ease);margin-left:0}
  .nav__links.is-open{transform:none;opacity:1;visibility:visible}
  .nav__link{padding:13px 14px;font-size:15.5px}
  .nav__cta{margin:8px 0 0;padding:14px;text-align:center}
  .nav__toggle{display:flex}
  .nav__inner{gap:16px}
  .hero{padding:118px 0 72px}
  .hero__stats{flex-wrap:wrap;gap:20px 0;padding:22px 0}
  .hero__stat{flex:1 1 45%;min-width:45%}
  .hero__stat:nth-child(3)::before,.hero__stat:nth-child(4)::before{display:none}
  .hero__stat:nth-child(3){flex-basis:100%;padding-top:14px;border-top:1px solid var(--line)}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .sec-head{margin-bottom:44px}
  .steps{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .cta{padding:64px 0}
  .foot{padding-top:48px}
}
@media(max-width:520px){
  .wrap,.nav__inner{padding:0 18px}
  .hero{padding:104px 0 60px}
  .hero__actions{gap:10px}
  .btn{width:100%;height:48px}
  .hero__actions .btn{flex:1 1 100%}
  .hero__stat b{font-size:21px}
  .hero h1{font-size:clamp(30px,9vw,38px);letter-spacing:-.02em;line-height:1.18;margin-bottom:20px}
  .hero__sub{font-size:14.5px;line-height:1.68;margin-bottom:30px}
  .hero__actions{margin-bottom:38px}
  .hero__stats{padding:18px 0;border-radius:16px}
  .hero__stat span{font-size:11.5px}
  .pill{font-size:12px;margin-bottom:20px}
  .sec-head h2{font-size:clamp(24px,7vw,30px);letter-spacing:-.02em}
  .sec-head p{font-size:15px}
  .sec-head{margin-bottom:32px}
  .card{padding:24px 22px}
  .step{padding:26px 22px 24px}
  .chip{height:36px;font-size:13px;padding:0 13px}
  .foot__grid{grid-template-columns:1fr;gap:30px}
  .foot__bar{flex-direction:column;align-items:flex-start;gap:12px}
}