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14px;font-size:13px;font-weight:500;transition:background .15s,color .15s}.btn-send-code:hover:not(:disabled){background:var(--primary);color:#fff}.btn-send-code:disabled{opacity:.55;cursor:not-allowed}.auth-link{color:var(--primary);cursor:pointer;background:0 0;border:0;margin:12px auto 0;font-size:13px;display:block}.modal-close{background:var(--bg);cursor:pointer;width:32px;height:32px;color:var(--text-secondary);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:18px;transition:background .15s;display:flex;position:absolute;top:16px;right:16px}.modal-close:hover{background:var(--border);color:var(--text)}.auth-modal-wrap{position:relative}@media (max-width:900px){.chart-sidebar{width:52px;min-width:52px}.chart-sidebar-title,.chart-sidebar-search,.chart-nav-group-title,.chart-nav-item span:not(.chart-nav-icon){display:none}.chart-nav-item{justify-content:center;padding:10px}.center-panel{width:320px;min-width:280px}}@media (max-width:640px){.main{flex-direction:column}.chart-sidebar{flex-direction:row;width:100%;min-width:100%;height:auto;padding:8px}.chart-sidebar-title,.chart-sidebar-search,.chart-nav-group-title{display:none}.chart-nav-scroll{overflow:auto visible}.chart-nav-group{margin-bottom:0;display:inline-block}.chart-nav-list{gap:4px;padding:0;display:flex}.chart-nav-item span:not(.chart-nav-icon){display:none}.center-panel{width:100%;min-width:0;height:40vh}.right-panel{height:40vh}}.landing{background:linear-gradient(#f8fafc 0%,#eef2ff 40%,#f1f5f9 100%);min-height:100vh;position:relative;overflow-x:hidden}.landing-bg{pointer-events:none;position:absolute;top:0;bottom:0;left:0;right:0;overflow:hidden}.landing-blob{filter:blur(80px);opacity:.45;border-radius:50%;position:absolute}.landing-blob.blob-1{background:#93c5fd;width:520px;height:520px;animation:18s ease-in-out infinite blobFloat;top:-120px;right:-80px}.landing-blob.blob-2{background:#c4b5fd;width:400px;height:400px;animation:22s ease-in-out infinite reverse blobFloat;bottom:20%;left:-100px}.landing-blob.blob-3{background:#7dd3fc;width:300px;height:300px;animation:16s ease-in-out 2s infinite blobFloat;top:40%;right:30%}@keyframes blobFloat{0%,to{transform:translate(0)scale(1)}33%{transform:translate(30px,-20px)scale(1.05)}66%{transform:translate(-20px,15px)scale(.95)}}.hero{z-index:1;justify-content:center;align-items:center;gap:60px;max-width:1140px;margin:0 auto;padding:48px 24px 80px;display:flex;position:relative}.hero-inner{flex:1;max-width:540px}.hero-badge{color:var(--primary);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffffd9;border:1px solid #2563eb33;border-radius:20px;margin-bottom:16px;padding:6px 14px;font-size:13px;font-weight:500;display:inline-block}.hero-logo{margin-bottom:16px}.hero-logo :deep(.brand-name){font-size:32px}.hero-brand{background:linear-gradient(135deg, var(--primary), #7c3aed);-webkit-text-fill-color:transparent;letter-spacing:4px;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:48px;font-weight:800}.hero-slogan{color:var(--text);letter-spacing:-.02em;margin-bottom:16px;font-size:34px;font-weight:800;line-height:1.25}.hero-highlight{background:linear-gradient(135deg, var(--primary), #7c3aed);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-desc{color:var(--text-secondary);margin-bottom:28px;font-size:16px;line-height:1.75}.hero-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.btn-hero{cursor:pointer;border:none;border-radius:12px;align-items:center;gap:8px;padding:14px 28px;font-size:15px;font-weight:600;text-decoration:none;transition:transform .1s,box-shadow .2s,background .2s;display:inline-flex}.btn-hero:active{transform:scale(.98)}.btn-hero-primary{background:linear-gradient(135deg, var(--primary), #4f46e5);color:#fff;box-shadow:0 4px 20px #2563eb66}.btn-hero-primary:hover{transform:translateY(-1px);box-shadow:0 8px 28px #2563eb73}.btn-arrow{transition:transform .2s}.btn-hero-primary:hover .btn-arrow{transform:translate(3px)}.btn-hero-outline{color:var(--primary);border:2px solid var(--primary);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#ffffffe6}.btn-hero-outline:hover{background:var(--primary-light)}.btn-hero-ghost{color:var(--text-secondary);border:1px solid var(--border);background:0 0;padding:14px 20px}.btn-hero-ghost:hover{color:var(--primary);border-color:var(--primary);background:#fffc}.hero-highlights{flex-wrap:wrap;gap:24px;margin-top:32px;display:flex}.highlight-item{flex-direction:column;gap:2px;display:flex}.highlight-value{background:linear-gradient(135deg, var(--primary), #7c3aed);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:22px;font-weight:800}.highlight-label{color:var(--text-secondary);font-size:12px}.hero-tip{color:var(--text-secondary);margin-top:20px;font-size:13px}.hero-visual{flex:1;max-width:480px;position:relative}.hero-card{box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff2;border:1px solid #fffc;border-radius:20px;overflow:hidden}.hero-card-float{animation:6s ease-in-out infinite cardFloat}@keyframes cardFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.hero-float-card{color:var(--text);border:1px solid var(--border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffffff2;border-radius:12px;align-items:center;gap:8px;padding:10px 16px;font-size:13px;font-weight:600;display:flex;position:absolute;box-shadow:0 8px 24px #0f172a1f}.float-card-1{animation:5s ease-in-out .5s infinite cardFloat;top:-12px;right:-16px}.float-card-2{animation:5.5s ease-in-out 1s infinite cardFloat;bottom:24px;left:-24px}.float-icon{font-size:18px}.hero-card-header{border-bottom:1px solid var(--border);background:linear-gradient(#f8fafc,#f1f5f9);align-items:center;gap:6px;padding:12px 16px;display:flex}.hero-card-header .dot{border-radius:50%;width:10px;height:10px}.hero-card-header .dot.red{background:#ef4444}.hero-card-header .dot.yellow{background:#f59e0b}.hero-card-header .dot.green{background:#22c55e}.hero-card-title{color:var(--text-secondary);margin-left:8px;font-size:12px}.hero-card-body{min-height:240px;display:flex}.mock-sidebar{background:var(--sidebar-bg);flex-direction:column;gap:4px;width:48px;padding:8px 4px;display:flex}.mock-nav{text-align:center;color:var(--sidebar-text);border-radius:6px;padding:8px 4px;font-size:14px;transition:all .2s}.mock-nav.active{background:var(--sidebar-active);color:#fff}.mock-chart{background:linear-gradient(#fafbfc,#fff);flex-direction:column;flex:1;align-items:center;gap:12px;padding:28px 24px;display:flex}.mock-line{background:linear-gradient(180deg, var(--primary), transparent);border-radius:1px;width:2px;height:20px}.mock-node{background:var(--primary-light);color:var(--primary);border:1px solid #2563eb4d;border-radius:8px;padding:8px 16px;font-size:13px;transition:transform .2s}.mock-node:hover{transform:scale(1.02)}.mock-node.root{background:linear-gradient(135deg, var(--primary), #4f46e5);color:#fff;border:none;font-weight:600;box-shadow:0 4px 12px #2563eb4d}.mock-children{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.section{z-index:1;max-width:1140px;margin:0 auto;padding:72px 24px;position:relative}.section-header{text-align:center;margin-bottom:40px}.section-tag{background:var(--primary-light);color:var(--primary);letter-spacing:.05em;border-radius:6px;margin-bottom:12px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-block}.section-title{color:var(--text);letter-spacing:-.02em;margin-bottom:10px;font-size:30px;font-weight:800}.section-subtitle{color:var(--text-secondary);max-width:560px;margin:0 auto;font-size:15px;line-height:1.6}.chart-types-section{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fff9;border:1px solid #fffc;border-radius:24px;max-width:1092px;margin:0 24px}.chart-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:14px;display:grid}.chart-type-card{background:var(--card);border:1px solid var(--border);cursor:default;border-radius:14px;flex-direction:column;align-items:center;gap:10px;padding:22px 12px;transition:box-shadow .2s,transform .2s,border-color .2s;display:flex}.chart-type-card:hover{box-shadow:var(--shadow);border-color:#2563eb4d;transform:translateY(-3px)}.chart-type-icon{font-size:28px}.chart-type-name{color:var(--text);font-size:13px;font-weight:600}.feature-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.feature-card{border:1px solid var(--border);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#ffffffd9;border-radius:16px;padding:28px;transition:box-shadow .2s,transform .2s}.feature-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.feature-icon-wrap{background:linear-gradient(135deg, var(--primary-light), #ede9fe);border-radius:14px;justify-content:center;align-items:center;width:52px;height:52px;margin-bottom:16px;display:flex}.feature-icon{font-size:26px}.feature-card h3{color:var(--text);margin-bottom:8px;font-size:17px;font-weight:700}.feature-card p{color:var(--text-secondary);font-size:14px;line-height:1.65}.steps-row{grid-template-columns:repeat(3,1fr);gap:24px;display:grid;position:relative}.step-card{text-align:center;border:1px solid var(--border);background:#ffffffe6;border-radius:16px;padding:32px 24px;transition:box-shadow .2s;position:relative}.step-card:hover{box-shadow:var(--shadow)}.step-num{background:linear-gradient(135deg, var(--primary), #4f46e5);color:#fff;border-radius:50%;width:44px;height:44px;margin:0 auto 18px;font-size:18px;font-weight:700;line-height:44px;box-shadow:0 4px 12px #2563eb59}.step-card h3{margin-bottom:8px;font-size:17px;font-weight:700}.step-card p{color:var(--text-secondary);font-size:14px;line-height:1.6}.cta-section{padding-bottom:80px}.cta-box{text-align:center;color:#fff;background:linear-gradient(135deg,#4f46e5 0%,#7c3aed 50%,#6366f1 100%);border-radius:24px;padding:56px 40px;position:relative;overflow:hidden}.cta-glow{filter:blur(40px);background:#ffffff26;border-radius:50%;width:300px;height:300px;position:absolute;top:-100px;right:-50px}.cta-box h2{margin-bottom:10px;font-size:26px;font-weight:800;position:relative}.cta-box p{opacity:.92;margin-bottom:28px;font-size:15px;position:relative}.cta-actions{justify-content:center;position:relative}.btn-hero-light{color:var(--primary);background:#fff;box-shadow:0 4px 16px #00000026}.btn-hero-light:hover{transform:translateY(-1px);box-shadow:0 8px 24px #0003}.btn-hero-outline-light{color:#fff;background:0 0;border:2px solid #ffffffb3}.btn-hero-outline-light:hover{background:#ffffff26}.footer-brand{color:var(--text);justify-content:center;align-items:center;gap:10px;margin-bottom:16px;font-size:16px;font-weight:700;display:flex}.footer-culture{color:var(--text-secondary);margin:-6px 0 16px;font-size:14px;font-weight:600}.footer-links{justify-content:center;gap:24px;margin-bottom:16px;display:flex}.footer-links a{color:var(--text-secondary);font-size:14px;text-decoration:none;transition:color .15s}.footer-links a:hover{color:var(--primary)}.footer-copy{color:var(--text-secondary);margin:0;font-size:13px}.footer-sep{margin:0 8px}@media (max-width:900px){.hero{flex-direction:column;gap:40px;padding:32px 20px 60px}.hero-slogan{font-size:28px}.hero-brand{font-size:36px}.hero-visual{width:100%}.hero-float-card{display:none}.chart-types-section{margin:0 16px}.steps-row{grid-template-columns:1fr}.cta-box{padding:40px 24px}}