@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 20px #7c5cfc0f}50%{box-shadow:0 0 40px #7c5cfc1f}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.landing-page{min-height:100vh;background:#f5f4f8;color:#1a1a2e;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;overflow-x:hidden}.landing-nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 48px;height:64px;background:#ffffffe0;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.06);transition:background .3s}.landing-nav-brand{display:flex;align-items:center;gap:12px;text-decoration:none}.landing-nav-brand img{width:36px;height:36px;border-radius:8px}.landing-nav-brand span{font-size:16px;font-weight:600;color:#1a1a2e;letter-spacing:.5px}.landing-nav-links{display:flex;align-items:center;gap:32px}.landing-nav-links a{color:#1a1a2e99;text-decoration:none;font-size:14px;transition:color .2s}.landing-nav-links a:hover{color:#1a1a2e}.landing-nav-login{display:inline-flex;align-items:center;gap:6px;padding:8px 24px;background:linear-gradient(135deg,#7c5cfc,#5b8def);color:#fff!important;border-radius:8px;font-weight:500;font-size:14px;text-decoration:none;transition:transform .2s,box-shadow .2s}.landing-nav-login:hover{transform:translateY(-1px);box-shadow:0 4px 20px #7c5cfc66}.landing-hero{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:120px 24px 80px;text-align:center;overflow:hidden;background:linear-gradient(180deg,#fff,#f5f4f8)}.landing-hero:before{content:"";position:absolute;top:-40%;left:-20%;width:140%;height:140%;background:radial-gradient(ellipse at 30% 20%,rgba(124,92,252,.06) 0%,transparent 60%),radial-gradient(ellipse at 70% 60%,rgba(91,141,239,.05) 0%,transparent 50%),radial-gradient(ellipse at 50% 80%,rgba(168,85,247,.03) 0%,transparent 40%);pointer-events:none;z-index:0}.landing-hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:#7c5cfc14;border:1px solid rgba(124,92,252,.2);border-radius:100px;font-size:13px;color:#7c5cfc;margin-bottom:32px;position:relative;z-index:1;animation:fadeInUp .6s ease-out}.landing-hero h1{position:relative;z-index:1;font-size:clamp(2.5rem,5vw,4.5rem);font-weight:800;line-height:1.15;margin:0 0 24px;max-width:800px;color:#1a1a2e;animation:fadeInUp .6s ease-out .1s both}.landing-hero h1 .gradient-text{background:linear-gradient(135deg,#7c5cfc,#5b8def,#38bdf8);background-size:200% 200%;animation:gradientShift 4s ease infinite;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.landing-hero-sub{position:relative;z-index:1;font-size:clamp(1rem,2vw,1.25rem);color:#1a1a2e8c;max-width:600px;line-height:1.7;margin:0 0 48px;animation:fadeInUp .6s ease-out .2s both}.landing-hero-actions{position:relative;z-index:1;display:flex;gap:16px;animation:fadeInUp .6s ease-out .3s both}.landing-btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:linear-gradient(135deg,#7c5cfc,#5b8def);color:#fff;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;text-decoration:none;transition:transform .2s,box-shadow .2s}.landing-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px #7c5cfc59}.landing-btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:#fff;color:#1a1a2e;border:1px solid rgba(0,0,0,.12);border-radius:12px;font-size:16px;font-weight:500;cursor:pointer;text-decoration:none;transition:background .2s,border-color .2s,box-shadow .2s}.landing-btn-secondary:hover{background:#f5f3ff;border-color:#7c5cfc4d;box-shadow:0 2px 12px #7c5cfc14}.landing-hero-visual{position:relative;z-index:1;margin-top:64px;width:100%;max-width:900px;animation:scaleIn .8s ease-out .4s both}.landing-hero-diagram{background:#1e1b3a;border:1px solid rgba(124,92,252,.15);border-radius:20px;padding:40px;animation:pulseGlow 4s ease-in-out infinite}.landing-diagram-flow{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}.landing-diagram-node{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 20px;background:#7c5cfc1a;border:1px solid rgba(124,92,252,.25);border-radius:12px;min-width:100px;transition:transform .3s}.landing-diagram-node:hover{transform:translateY(-4px)}.landing-diagram-node-icon{font-size:24px}.landing-diagram-node-label{font-size:12px;color:#ffffffb3;white-space:nowrap}.landing-diagram-arrow{color:#a78bfa99;font-size:24px;animation:float 2s ease-in-out infinite}.landing-diagram-center{background:linear-gradient(135deg,#7c5cfc2e,#5b8def2e);border-color:#7c5cfc73;padding:20px 28px}.landing-diagram-center .landing-diagram-node-icon{font-size:32px}.landing-diagram-center .landing-diagram-node-label{font-size:14px;font-weight:600;color:#a78bfa}.landing-section{padding:100px 24px;max-width:1200px;margin:0 auto}.landing-section-header{text-align:center;margin-bottom:64px}.landing-section-header h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;margin:0 0 16px;color:#1a1a2e}.landing-section-header p{font-size:16px;color:#1a1a2e80;max-width:560px;margin:0 auto;line-height:1.7}.landing-features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}@media(max-width:900px){.landing-features{grid-template-columns:1fr}.landing-nav{padding:0 20px}.landing-nav-links a:not(.landing-nav-login){display:none}.landing-diagram-flow{gap:12px}.landing-stats{grid-template-columns:repeat(2,1fr)!important}}.landing-feature-card{background:#1e1b3a;border:1px solid rgba(124,92,252,.12);border-radius:16px;padding:32px 28px;transition:transform .3s,border-color .3s,box-shadow .3s}.landing-feature-card:hover{transform:translateY(-4px);border-color:#7c5cfc59;box-shadow:0 12px 40px #7c5cfc1f}.landing-feature-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:12px;font-size:24px;margin-bottom:20px}.landing-feature-card h3{font-size:18px;font-weight:600;color:#fff;margin:0 0 10px}.landing-feature-card p{font-size:14px;color:#ffffff8c;line-height:1.7;margin:0}.landing-stats-section{background:#1e1b3a}.landing-stats-section .landing-section-header h2{color:#fff}.landing-stats-section .landing-section-header p{color:#ffffff80}.landing-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}.landing-stat-value{font-size:clamp(2rem,4vw,3rem);font-weight:800;background:linear-gradient(135deg,#a78bfa,#5b8def);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.landing-stat-label{font-size:14px;color:#ffffff8c}.landing-how-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}@media(max-width:900px){.landing-how-steps{grid-template-columns:1fr 1fr}}.landing-step{position:relative;text-align:center;padding:32px 20px;background:#1e1b3a;border-radius:16px;border:1px solid rgba(124,92,252,.12)}.landing-step:before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:40px;height:40px;margin:0 auto 20px;background:linear-gradient(135deg,#7c5cfc,#5b8def);border-radius:50%;font-size:16px;font-weight:700;color:#fff}.landing-step h3{font-size:16px;font-weight:600;color:#fff;margin:0 0 8px}.landing-step p{font-size:13px;color:#ffffff80;line-height:1.6;margin:0}.landing-models-section{text-align:center}.landing-model-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}.landing-model-tag{padding:10px 24px;background:#1e1b3a;border:1px solid rgba(124,92,252,.15);border-radius:100px;font-size:14px;color:#ffffffbf;transition:border-color .2s,background .2s,box-shadow .2s}.landing-model-tag:hover{border-color:#7c5cfc73;background:#2a2650;box-shadow:0 2px 16px #7c5cfc1f}.landing-cta-section{text-align:center;padding:120px 24px;background:#1e1b3a}.landing-cta-section h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;color:#fff;margin:0 0 16px}.landing-cta-section p{font-size:16px;color:#ffffff80;margin:0 0 40px}.landing-footer{background:#16132e;border-top:1px solid rgba(124,92,252,.1);padding:40px 48px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#fff6}.landing-footer a{color:#ffffff8c;text-decoration:none;transition:color .2s}.landing-footer a:hover{color:#a78bfa}