*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Microsoft YaHei","Segoe UI","PingFang SC","Hiragino Sans GB",sans-serif;background:#0f0f0f;color:#e0e0e6;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 24px}

nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(15,15,15,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
nav .container{display:flex;align-items:center;justify-content:space-between;height:60px}
.nav-logo{font-size:20px;font-weight:700;letter-spacing:-.5px}
.nav-logo em{color:#d1684e;font-style:normal}
.nav-links{display:flex;gap:28px;font-size:14px;color:#999}
.nav-links a:hover{color:#fff}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:linear-gradient(135deg,#d1684e,#e8785a);color:#fff;box-shadow:0 4px 20px rgba(209,104,78,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 28px rgba(209,104,78,.45)}
.btn-wechat{background:#07c160;color:#fff;box-shadow:0 4px 16px rgba(7,193,96,.25)}
.btn-wechat:hover{background:#06ad56}

section{padding:100px 0}
.section-tag{display:inline-block;font-size:13px;font-weight:600;color:#d1684e;letter-spacing:1px;margin-bottom:12px}
.section-title{font-size:36px;font-weight:700;color:#fff;line-height:1.3;margin-bottom:16px;letter-spacing:-.5px}
.section-desc{font-size:16px;color:#999;max-width:560px;line-height:1.8}
.text-center{text-align:center}
.mx-auto{margin-left:auto;margin-right:auto}

/* Hero */
#hero{padding-top:100px;padding-bottom:80px;text-align:center;position:relative}
#hero::before{content:'';position:absolute;top:-100px;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(209,104,78,.1) 0%,transparent 70%);pointer-events:none}
.hero-tag{display:inline-block;padding:6px 16px;border-radius:20px;background:rgba(209,104,78,.1);color:#d1684e;font-size:13px;font-weight:600;margin-bottom:28px;border:1px solid rgba(209,104,78,.2)}
.hero-title{font-size:48px;font-weight:800;color:#fff;line-height:1.2;margin-bottom:20px;letter-spacing:-1px}
.hero-title .hl{font-size:72px;background:linear-gradient(135deg,#d1684e,#f37a5c);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:18px;color:#888;max-width:480px;margin:0 auto 40px;line-height:1.8}
.hero-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:60px}
.hero-screenshot{
    width:150px;height:150px;margin:0 auto;overflow:hidden;
    position:relative;
	margin-bottom:30px;
}

/* Features */
#features{background:#141414}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.feature-card{background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:32px 24px;transition:all .25s}
.feature-card:hover{background:rgba(255,255,255,.05);border-color:rgba(209,104,78,.25);transform:translateY(-3px)}
.feature-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px}
.feature-card h3{font-size:17px;color:#fff;margin-bottom:10px;font-weight:600}
.feature-card p{font-size:14px;color:#888;line-height:1.7}
.ic-wx{background:rgba(7,193,96,.12);color:#07c160}
.ic-brain{background:rgba(209,104,78,.12);color:#d1684e}
.ic-flash{background:rgba(255,186,73,.12);color:#ffba49}
.ic-shield{background:rgba(100,149,237,.12);color:#6495ed}

/* Memory */
#memory{background:linear-gradient(180deg,#141414 0%,#0f0f0f 100%)}
.memory-layout{display:flex;gap:60px;align-items:center;margin-top:48px}
.memory-text{flex:1}
.memory-text .section-desc{max-width:100%}
.memory-note{margin-top:20px;font-size:13px;color:#d1684e;padding:12px 16px;border-radius:8px;background:rgba(209,104,78,.06);border:1px solid rgba(209,104,78,.12);display:inline-block}
.memory-visual{flex:1;min-width:0}
.memory-diagram{background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.06);border-radius:16px;padding:40px 24px}
.dg-flow{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.dg-node{padding:14px 20px;border-radius:10px;font-size:14px;font-weight:600;text-align:center;white-space:nowrap}
.n-in{background:rgba(255,186,73,.1);color:#ffba49;border:1px solid rgba(255,186,73,.15)}
.n-pro{background:rgba(209,104,78,.1);color:#d1684e;border:1px solid rgba(209,104,78,.15)}
.n-out{background:rgba(209,104,78,.06);color:#e8785a;border:1px solid rgba(209,104,78,.12)}
.dg-arrow{color:#444;font-size:20px}
.dg-mid{text-align:center;padding:16px 0;color:#444;font-size:13px}

/* Capabilities */
#capabilities{background:#0f0f0f}
.caps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px}
.cap-item{display:flex;align-items:flex-start;gap:14px;padding:24px;border-radius:12px;background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.05);transition:all .2s}
.cap-item:hover{background:rgba(255,255,255,.05);border-color:rgba(209,104,78,.15)}
.cap-emoji{font-size:24px;flex-shrink:0;margin-top:2px}
.cap-item h4{font-size:15px;color:#fff;margin-bottom:4px;font-weight:600}
.cap-item p{font-size:13px;color:#777;line-height:1.6}

/* CTA */
#cta{background:#141414;text-align:center}
.cta-steps{display:flex;justify-content:center;gap:48px;margin:48px 0 40px}
.cta-step{text-align:center}
.cta-step-num{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#d1684e,#f37a5c);color:#fff;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.cta-step-text{font-size:14px;color:#aaa}
.cta-step-text strong{color:#fff;display:block;margin-bottom:2px}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
footer{border-top:1px solid rgba(255,255,255,.06);padding:32px 0}
footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.footer-logo{font-size:16px;font-weight:700;color:#555}
.footer-logo em{color:#d1684e;font-style:normal}
.footer-links{display:flex;gap:24px;font-size:13px;color:#444}
.footer-links a:hover{color:#888}

/* Responsive */
@media(max-width:900px){
    .features-grid{grid-template-columns:repeat(2,1fr)}
    .caps-grid{grid-template-columns:repeat(2,1fr)}
    .memory-layout{flex-direction:column;gap:32px}
    .hero-title{font-size:38px}
    .cta-steps{gap:28px}
}
@media(max-width:560px){
    .features-grid{grid-template-columns:1fr}
    .caps-grid{grid-template-columns:1fr}
    .hero-title{font-size:30px}
    .hero-screenshot{height:240px}
    .hero-buttons,.cta-buttons{flex-direction:column;align-items:center}
    .cta-steps{flex-direction:column;gap:20px}
    .dg-flow{flex-direction:column}
    .dg-arrow{transform:rotate(90deg)}
    .nav-links{display:none}
    section{padding:64px 0}
    #hero{padding-top:120px}
}