@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&display=swap');
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;background:#f9f9fb;color:#15141a;font-weight:500;line-height:1.75;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}

/* ========== Header ========== */
header{position:fixed;top:0;width:100%;z-index:999;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.06);transition:box-shadow .3s}
header.scrolled{box-shadow:0 2px 16px rgba(0,0,0,.08)}
.hi{max-width:1280px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:64px}
.hl{display:flex;align-items:center;gap:10px;color:#20123a;font-weight:900;font-size:20px;letter-spacing:-.5px}
.hl img{width:36px;height:36px}
.hn{display:flex;gap:32px;align-items:center}
.hn a{color:#5b5b66;font-size:15px;font-weight:700;padding:6px 0;transition:color .2s;position:relative}
.hn a:hover,.hn a.active{color:#20123a}
.hn a.active::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:3px;background:linear-gradient(90deg,#7543e3,#9b6dff);border-radius:2px}
.hb{display:inline-block;background:linear-gradient(135deg,#7543e3,#9b6dff);color:#fff;padding:10px 24px;border-radius:24px;font-weight:900;font-size:14px;transition:all .3s;box-shadow:0 4px 16px rgba(117,67,227,.35)}
.hb:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(117,67,227,.55)}

/* ========== Hero ========== */
.hero{background:linear-gradient(170deg,#20123a 0%,#2b1a4a 30%,#3d1e7c 70%,#4a2a8a 100%);padding:120px 0 100px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;width:700px;height:700px;background:radial-gradient(circle,rgba(117,67,227,.35),transparent 70%);top:-300px;right:-150px;border-radius:50%;pointer-events:none}
.hero::after{content:'';position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgba(255,107,130,.12),transparent 70%);bottom:-200px;left:-100px;border-radius:50%;pointer-events:none}
.hero .sec{position:relative;z-index:1}
.hero .hg{text-align:center;padding:0 0 48px;position:relative;z-index:1}
.hero .hg .badge{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#e0d5ff;padding:6px 18px;border-radius:20px;font-size:14px;font-weight:700;margin-bottom:24px;letter-spacing:.5px}
.hero .hg h1.hero-title{font-size:clamp(3.2rem,7vw,5rem);font-weight:900;color:#fff;margin-bottom:20px;letter-spacing:-2px;line-height:1.1}
.hero .hg h1.hero-title .hero-sub{display:block;font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:700;letter-spacing:-1px;color:rgba(255,255,255,.85);margin-top:8px}
.hero .hg h1 .grad{background:linear-gradient(135deg,#c4a6ff,#ff7096);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .hg .sub{font-size:1.15rem;color:rgba(255,255,255,.65);max-width:620px;margin:0 auto;font-weight:500;line-height:1.9}
.hero .hcta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.hero .btnp{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#20123a;padding:16px 40px;border-radius:30px;font-weight:900;font-size:17px;transition:all .3s;box-shadow:0 8px 32px rgba(0,0,0,.25)}
.hero .btnp:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(0,0,0,.35)}
.hero .btnp .arrow{font-size:20px;transition:transform .3s}
.hero .btnp:hover .arrow{transform:translateX(4px)}
.hero .btno{display:inline-flex;align-items:center;gap:8px;border:2px solid rgba(255,255,255,.3);color:#fff;padding:16px 40px;border-radius:30px;font-weight:700;font-size:16px;transition:all .3s}
.hero .btno:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-2px)}
.hero .hinfo{margin-top:18px;text-align:center;font-size:.85rem;color:rgba(255,255,255,.4);font-weight:500;position:relative;z-index:1}
.hero .himg{margin-top:48px;text-align:center;position:relative;z-index:1}
.hero .himg img{max-width:600px;margin:0 auto;filter:drop-shadow(0 20px 60px rgba(0,0,0,.4))}

/* ========== Sections ========== */
.sec{padding:0 28px;position:relative;z-index:1}
.si{max-width:1100px;margin:0 auto}
.sec-title{text-align:center;padding:0 0 56px}
.sec-title h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:900;color:#20123a;margin-bottom:14px;letter-spacing:-.5px}
.sec-title p{font-size:1.1rem;color:#5b5b66;max-width:650px;margin:0 auto;font-weight:500}
.section-pad{padding:90px 0}

/* ========== Feature Cards (3-col) ========== */
.c3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1100px;margin:0 auto}
.card{background:#fff;border-radius:16px;padding:36px 28px;transition:all .35s;box-shadow:0 2px 12px rgba(0,0,0,.04);border:1px solid rgba(0,0,0,.06);position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,0,0,.1);border-color:rgba(117,67,227,.15)}
.card .ci{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:28px}
.card .ci.purple{background:linear-gradient(135deg,rgba(117,67,227,.12),rgba(155,109,255,.06));color:#7543e3}
.card .ci.pink{background:linear-gradient(135deg,rgba(255,64,129,.1),rgba(255,107,130,.04));color:#e91e63}
.card .ci.blue{background:linear-gradient(135deg,rgba(0,96,223,.1),rgba(64,150,255,.04));color:#0060df}
.card .ci.green{background:linear-gradient(135deg,rgba(0,200,117,.1),rgba(0,230,140,.04));color:#00a86b}
.card h3{font-size:1.2rem;font-weight:900;color:#20123a;margin-bottom:10px}
.card p{font-size:.95rem;color:#5b5b66;line-height:1.7;font-weight:500}
@media(max-width:900px){.c3{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.c3{grid-template-columns:1fr}}

/* ========== 2-col Image+Text ========== */
.c2r{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;max-width:1100px;margin:0 auto}
.c2r.reverse{direction:rtl}
.c2r.reverse .c2t{direction:ltr}
.c2t h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;color:#20123a;margin-bottom:16px;letter-spacing:-.5px}
.c2t p{font-size:1.05rem;color:#5b5b66;line-height:1.9;margin-bottom:12px;font-weight:500}
.c2t .tag{display:inline-block;background:linear-gradient(135deg,rgba(117,67,227,.1),rgba(155,109,255,.05));color:#7543e3;padding:6px 16px;border-radius:20px;font-size:13px;font-weight:700;margin-bottom:16px}
.c2i{text-align:center}
.c2i img{max-width:420px;margin:0 auto}
@media(max-width:768px){.c2r,.c2r.reverse{grid-template-columns:1fr;gap:32px;direction:ltr}.c2i{order:-1}.c2i img{max-width:280px}}

/* ========== Download Cards ========== */
.down-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}
.dc{background:#fff;border:2px solid rgba(0,0,0,.06);border-radius:20px;padding:40px 28px;text-align:center;transition:all .35s;position:relative}
.dc:hover{border-color:rgba(117,67,227,.2);transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,0,0,.1)}
.dc.recommend{border-color:rgba(117,67,227,.3);box-shadow:0 8px 32px rgba(117,67,227,.1)}
.dc .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#7543e3,#9b6dff);color:#fff;padding:5px 20px;border-radius:14px;font-size:13px;font-weight:900;white-space:nowrap}
.dc .di{font-size:48px;margin-bottom:16px}
.dc h3{font-size:1.25rem;font-weight:900;color:#20123a;margin-bottom:6px}
.dc .ver{font-size:.85rem;color:#9f9fad;margin-bottom:20px}
.dc .feat{list-style:none;text-align:left;margin-bottom:24px}
.dc .feat li{font-size:.9rem;color:#5b5b66;padding:6px 0;padding-left:22px;position:relative}
.dc .feat li::before{content:'✓';position:absolute;left:0;color:#7543e3;font-weight:900}
.dc .dbtn{display:inline-block;background:linear-gradient(135deg,#7543e3,#9b6dff);color:#fff;padding:14px 36px;border-radius:28px;font-weight:900;font-size:15px;transition:all .3s;box-shadow:0 4px 16px rgba(117,67,227,.3)}
.dc .dbtn:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(117,67,227,.5)}
.dc .dbtn2{display:inline-block;border:2px solid rgba(0,0,0,.1);color:#20123a;padding:14px 36px;border-radius:28px;font-weight:700;font-size:15px;transition:all .3s}
.dc .dbtn2:hover{border-color:#7543e3;color:#7543e3;transform:translateY(-2px)}
@media(max-width:800px){.down-grid{grid-template-columns:1fr;max-width:400px}}

/* ========== Stats Bar ========== */
.stats{background:#fff;border-top:1px solid rgba(0,0,0,.05);border-bottom:1px solid rgba(0,0,0,.05)}
.stats .si{display:flex;justify-content:center;gap:80px;padding:50px 0;flex-wrap:wrap}
.stats .st{text-align:center}
.stats .st .num{font-size:2.4rem;font-weight:900;background:linear-gradient(135deg,#7543e3,#ff4081);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stats .st .label{font-size:.95rem;color:#5b5b66;margin-top:4px;font-weight:500}

/* ========== CTA Section ========== */
.cta-sec{background:linear-gradient(170deg,#20123a,#3d1e7c);padding:90px 0;text-align:center;position:relative;overflow:hidden}
.cta-sec::before{content:'';position:absolute;width:500px;height:500px;background:radial-gradient(circle,rgba(155,109,255,.2),transparent 70%);top:-100px;right:-100px;border-radius:50%}
.cta-sec .si{position:relative;z-index:1}
.cta-sec h2{font-size:clamp(1.8rem,4vw,2.4rem);font-weight:900;color:#fff;margin-bottom:14px}
.cta-sec p{font-size:1.1rem;color:rgba(255,255,255,.6);margin-bottom:36px}
.cta-sec .btnp{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#20123a;padding:18px 48px;border-radius:30px;font-weight:900;font-size:18px;transition:all .3s;box-shadow:0 8px 32px rgba(0,0,0,.3)}
.cta-sec .btnp:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(0,0,0,.4)}
.cta-sec .note{margin-top:16px;font-size:.85rem;color:rgba(255,255,255,.35);font-weight:500}

/* ========== Footer ========== */
footer{background:#15141a;padding:56px 0 0}
.fg{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1100px;margin:0 auto;padding:0 28px 48px}
.fc h4{color:#fff;font-size:15px;font-weight:900;margin-bottom:18px}
.fc p{font-size:.9rem;color:#9f9fad;line-height:1.9;font-weight:500}
.fc a{font-size:.9rem;color:#9f9fad;line-height:2.4;display:block;transition:color .2s;font-weight:500}
.fc a:hover{color:#c4a6ff}
.fb{border-top:1px solid rgba(255,255,255,.08);padding:18px 28px;text-align:center;font-size:13px;color:#6f6f7a;font-weight:500}
.fb a{color:#9f9fad;margin:0 12px;font-weight:700;transition:color .2s}
.fb a:hover{color:#fff}
@media(max-width:768px){.fg{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.fg{grid-template-columns:1fr}}

/* ========== Sub Pages ========== */
.page-header{padding:120px 28px 48px;text-align:center;max-width:800px;margin:0 auto}
.page-header .bread{font-size:.9rem;color:#9f9fad;margin-bottom:12px}
.page-header .bread a{color:#7543e3;transition:color .2s}
.page-header .bread a:hover{color:#9b6dff}
.page-header h1{font-size:clamp(2rem,4vw,2.8rem);font-weight:900;color:#20123a;margin-bottom:14px;letter-spacing:-.5px}
.page-header p{font-size:1.1rem;color:#5b5b66;font-weight:500}

/* FAQ */
.fl{max-width:820px;margin:0 auto;padding:0 28px 80px}
.fi{background:#fff;border:1px solid rgba(0,0,0,.06);border-radius:12px;padding:28px 32px;margin-bottom:14px;transition:all .25s;cursor:pointer}
.fi:hover{border-color:rgba(117,67,227,.15);box-shadow:0 8px 24px rgba(0,0,0,.06)}
.fi h2{font-size:1.1rem;font-weight:900;color:#20123a;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.fi h2 .q{display:inline-flex;width:28px;height:28px;background:linear-gradient(135deg,#7543e3,#9b6dff);color:#fff;border-radius:50%;align-items:center;justify-content:center;font-size:14px;font-weight:900;flex-shrink:0}
.fi p{font-size:.95rem;color:#5b5b66;line-height:1.8;font-weight:500}

/* Article */
.ac{max-width:800px;margin:0 auto;padding:0 28px 80px}
.ac .meta{font-size:.85rem;color:#9f9fad;margin-bottom:32px;display:flex;gap:20px;flex-wrap:wrap;font-weight:500}
.ac h2{font-size:1.5rem;font-weight:900;color:#20123a;margin:40px 0 14px}
.ac p{font-size:1.05rem;color:#3a3a44;line-height:2;margin-bottom:18px;font-weight:500}
.ac strong{color:#20123a;font-weight:900}
.ac .highlight-box{background:linear-gradient(135deg,rgba(117,67,227,.06),rgba(155,109,255,.03));border-left:4px solid #7543e3;padding:20px 24px;border-radius:0 12px 12px 0;margin:28px 0}
.ac .highlight-box p{color:#20123a;font-weight:700;margin:0}

/* 404 */
.page-404{text-align:center;padding:160px 28px 100px}
.page-404 .code{font-size:clamp(6rem,12vw,10rem);font-weight:900;background:linear-gradient(135deg,#7543e3,#ff4081);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.page-404 h1{font-size:1.8rem;font-weight:900;color:#20123a;margin:16px 0 10px}
.page-404 p{color:#5b5b66;font-size:1.1rem;margin-bottom:28px}
.page-404 .btn{display:inline-block;background:linear-gradient(135deg,#7543e3,#9b6dff);color:#fff;padding:14px 36px;border-radius:26px;font-weight:900;font-size:16px;transition:all .3s}
.page-404 .btn:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(117,67,227,.4)}

/* Sitemap */
.sm{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:850px;margin:0 auto;padding:0 28px 80px}
.sc{background:#fff;border:1px solid rgba(0,0,0,.06);border-radius:12px;padding:32px}
.sc h2{font-size:1.15rem;font-weight:900;color:#20123a;margin-bottom:18px}
.sc a{display:block;color:#5b5b66;padding:8px 0;font-size:.95rem;transition:all .2s;font-weight:500}
.sc a:hover{color:#7543e3;padding-left:6px}
@media(max-width:600px){.sm{grid-template-columns:1fr}}

/* Trust bar */
.trust-bar{background:#fff;border-bottom:1px solid rgba(0,0,0,.05);padding:14px 0;text-align:center;font-size:.8rem;color:#9f9fad;font-weight:500}
.trust-bar span{margin:0 16px}

/* Mobile menu */
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:#20123a}
.menu-toggle span{display:block;width:24px;height:2px;background:#20123a;margin:5px 0;border-radius:2px;transition:all .3s}
@media(max-width:768px){
  .hn{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:20px 28px;gap:0;border-bottom:1px solid rgba(0,0,0,.06);box-shadow:0 8px 24px rgba(0,0,0,.08)}
  .hn.open{display:flex}
  .hn a{padding:14px 0;border-bottom:1px solid rgba(0,0,0,.04);width:100%}
  .menu-toggle{display:block}
}

/* Animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.anim-up{animation:fadeUp .6s ease-out both}