:root {
  --bg: #080B14;
  --bg2: #0E1220;
  --card: #131829;
  --card-hover: #1A2035;
  --primary: #00D4AA;
  --primary-glow: rgba(0,212,170,0.15);
  --accent: #6366F1;
  --accent-glow: rgba(99,102,241,0.15);
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --text: #E5E7EB;
  --text-dim: #9CA3AF;
  --text-muted: #6B7280;
  --border: #1E293B;
  --border-hover: #334155;
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:25px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;min-height:100vh}
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(ellipse 60% 40% at 50% 0%, rgba(0,212,170,.05) 0%, transparent 60%),radial-gradient(ellipse 30% 25% at 80% 80%, rgba(99,102,241,.04) 0%, transparent 50%)}
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 2.5rem;display:flex;justify-content:space-between;align-items:center;background:rgba(8,11,20,.88);backdrop-filter:blur(24px);border-bottom:1px solid var(--border)}
.nav-logo{font-size:1.25rem;font-weight:800;color:#fff;display:flex;align-items:center;gap:.5rem;text-decoration:none;letter-spacing:-.01em}
.nav-logo .icon{font-size:1.5rem}
.nav-center{display:flex;gap:2rem;align-items:center}
.nav-center a{color:var(--text-dim);text-decoration:none;font-size:.9rem;font-weight:500;transition:color .2s}
.nav-center a:hover{color:#fff}
.nav-right{display:flex;align-items:center;gap:.75rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.65rem 1.5rem;border-radius:50px;font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all .25s;text-decoration:none;border:none;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg, var(--primary), #00B894);color:#000;box-shadow:0 4px 24px rgba(0,212,170,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,212,170,.4)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border-hover)}
.btn-outline:hover{background:rgba(255,255,255,.03);border-color:var(--text-dim)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{box-shadow:0 6px 25px rgba(99,102,241,.35)}
.btn-danger{background:rgba(239,68,68,.15);color:var(--danger);border:1px solid rgba(239,68,68,.3)}
.btn-sm{padding:.4rem 1rem;font-size:.8rem}
.btn-lg{padding:.85rem 2.2rem;font-size:1rem}
.btn-block{width:100%;justify-content:center}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}
.form-group{margin-bottom:1.2rem}
.form-group label{display:block;font-size:.85rem;color:var(--text-dim);margin-bottom:.4rem;font-weight:500}
.form-input{width:100%;padding:.75rem 1rem;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.95rem;font-family:inherit;outline:none;transition:border-color .2s,box-shadow .2s}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.form-input::placeholder{color:var(--text-muted)}
textarea.form-input{resize:vertical;min-height:100px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;transition:all .3s}
.card:hover{border-color:var(--border-hover)}
.card-header{padding-bottom:1rem;margin-bottom:1rem;border-bottom:1px solid var(--border)}
.card-header h3{font-size:1.1rem;color:#fff;font-weight:700}
.badge{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .7rem;border-radius:100px;font-size:.75rem;font-weight:600}
.badge-success{background:rgba(16,185,129,.15);color:var(--success)}
.badge-warning{background:rgba(245,158,11,.15);color:var(--warning)}
.badge-danger{background:rgba(239,68,68,.15);color:var(--danger)}
.badge-info{background:rgba(99,102,241,.15);color:var(--accent)}
.badge-primary{background:rgba(0,212,170,.15);color:var(--primary)}
.alert{padding:.8rem 1rem;border-radius:var(--radius-sm);font-size:.9rem;margin-bottom:1rem}
.alert-success{background:rgba(16,185,129,.1);color:var(--success);border:1px solid rgba(16,185,129,.2)}
.alert-error{background:rgba(239,68,68,.1);color:var(--danger);border:1px solid rgba(239,68,68,.2)}
.alert-info{background:rgba(99,102,241,.1);color:var(--accent);border:1px solid rgba(99,102,241,.2)}
.alert-warning{background:rgba(245,158,11,.1);color:var(--warning);border:1px solid rgba(245,158,11,.2)}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:.75rem 1rem;text-align:left;font-size:.9rem}
th{background:var(--bg);color:var(--text-muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
tr{border-bottom:1px solid var(--border)}
tr:hover{background:rgba(255,255,255,.02)}
.modal-overlay{position:fixed;inset:0;z-index:999;background:rgba(0,0,0,.8);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s}
.modal-overlay.active{opacity:1;visibility:visible}
.modal{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;max-width:500px;width:90%;animation:modalIn .3s ease-out}
@keyframes modalIn{from{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}
.modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;color:var(--text-muted);font-size:1.3rem;cursor:pointer}
.modal-close:hover{color:#fff}
.toast-container{position:fixed;top:1rem;right:1rem;z-index:9999;display:flex;flex-direction:column;gap:.5rem}
.toast{padding:.8rem 1.2rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;animation:slideIn .3s ease-out;max-width:400px;box-shadow:0 10px 30px rgba(0,0,0,.5)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}
.toast-success{background:#065F46;color:#D1FAE5;border:1px solid var(--success)}
.toast-error{background:#7F1D1D;color:#FEE2E2;border:1px solid var(--danger)}
.toast-info{background:#1E3A5F;color:#DBEAFE;border:1px solid var(--accent)}
section{padding:5rem 2rem;position:relative;z-index:1}
.container{max-width:1200px;margin:0 auto}
.section-header{text-align:center;margin-bottom:3rem}
.section-label{display:inline-block;font-size:.8rem;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.8rem}
.section-title{font-size:2.5rem;font-weight:800;color:#fff;line-height:1.2;margin-bottom:1rem}
.section-desc{color:var(--text-dim);font-size:1.05rem;max-width:600px;margin:0 auto 2rem;line-height:1.7}
.hero{min-height:100vh;display:flex;align-items:center;position:relative;z-index:1;padding:5rem 2.5rem 3rem}
.hero-grid{max-width:1150px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;width:100%}
.hero h1{font-size:2.8rem;font-weight:900;color:#fff;line-height:1.2;margin-bottom:1rem;letter-spacing:-.01em}
.hero h1 .hl{background:linear-gradient(135deg, #00D4AA, #00F5D4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1rem;color:var(--text-dim);margin-bottom:1.5rem;line-height:1.7}
.hero-btns{display:flex;gap:1rem}
.hero-visual{background:var(--card);border-radius:var(--radius);padding:2rem;position:relative;box-shadow:0 30px 60px rgba(0,0,0,.4)}
.hero-visual::before{content:'';position:absolute;inset:-1px;border-radius:var(--radius);background:linear-gradient(135deg, rgba(0,212,170,.3), transparent 40%, rgba(99,102,241,.2));z-index:-1}
.demo-title{font-size:.85rem;color:var(--text-muted);margin-bottom:1rem}
.divider{height:2px;background:linear-gradient(90deg, transparent, rgba(0,212,170,.5), transparent);margin:.5rem 0 1.2rem}
.risk-demo{display:flex;flex-direction:column;gap:.5rem}
.addr-row{display:flex;justify-content:space-between;align-items:center;padding:.6rem 1rem;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.04);border-radius:10px;font-size:.82rem}
.addr-text{color:var(--text);flex:1}
.dot{width:8px;height:8px;border-radius:50%;margin:0 .75rem;flex-shrink:0}
.dot.safe{background:var(--success);box-shadow:0 0 8px rgba(16,185,129,.5)}
.dot.warn{background:var(--warning);box-shadow:0 0 8px rgba(245,158,11,.5)}
.dot.danger{background:var(--danger);box-shadow:0 0 8px rgba(239,68,68,.5)}
.risk-label{font-size:.75rem;font-weight:700;width:48px;text-align:right;flex-shrink:0}
.risk-label.safe{color:var(--success)}
.risk-label.warn{color:var(--warning)}
.risk-label.danger{color:var(--danger)}
/* ©¤©¤ FEATURES ©¤©¤ */
#features{background:var(--bg2)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;max-width:1100px;margin:0 auto}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;transition:all .3s;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 20px 40px rgba(0,0,0,.3)}
.feature-card .icon{font-size:2rem;margin-bottom:1rem}
.feature-card h3{color:#fff;font-size:1.1rem;margin-bottom:.6rem}
.feature-card p{color:var(--text-dim);font-size:.9rem;line-height:1.6}
#stats{background:var(--bg)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;max-width:1100px;margin:0 auto}
.stat-card{text-align:center;padding:2rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:9rem}
.stat-card .num{font-size:2.5rem;font-weight:900;color:var(--primary);margin-bottom:.3rem}
.stat-card .label{color:var(--text-dim);font-size:.9rem}
#cta{text-align:center;padding:6rem 2rem;background:radial-gradient(ellipse at 50% 0%, rgba(0,212,170,.06) 0%, transparent 70%), var(--bg)}
#cta h2{font-size:2.5rem;color:#fff;margin-bottom:1rem}
footer{padding:2rem;text-align:center;border-top:1px solid var(--border);color:var(--text-muted);font-size:.85rem}
.hero-subtitle{font-size:.78rem;color:var(--text-muted);letter-spacing:.15em;text-transform:uppercase;margin-bottom:.5rem;font-weight:500}
.auth-page,.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}
.auth-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem;width:100%;max-width:420px}
.auth-card h1{color:#fff;font-size:1.6rem;text-align:center;margin-bottom:.5rem}
.auth-card .subtitle{color:var(--text-dim);text-align:center;margin-bottom:1.5rem;font-size:.9rem}
.auth-card .alt-link{text-align:center;margin-top:1.5rem;color:var(--text-dim);font-size:.9rem}
.auth-card .alt-link a{color:var(--primary);text-decoration:none;font-weight:500}
.auth-card .alt-link a:hover{text-decoration:underline}
.dashboard{padding:6rem 2rem 2rem}
.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}
.dashboard-header h1{color:#fff;font-size:1.8rem}
.credits-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.2rem;border-radius:100px;background:rgba(0,212,170,.08);border:1px solid rgba(0,212,170,.3);color:var(--primary);font-weight:700;font-size:.95rem}
.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.tab-nav{display:flex;gap:.3rem;margin-bottom:1.5rem}
.tab-btn{padding:.6rem 1.2rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s;background:transparent;color:var(--text-dim);border:1px solid var(--border)}
.tab-btn.active{background:var(--primary);color:#000;border-color:var(--primary)}
.tab-btn:hover:not(.active){border-color:var(--border-hover);color:var(--text)}
.tab-content{display:none}
.tab-content.active{display:block}
.analysis-result{border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-bottom:.8rem}
.analysis-result.safe{border-left:3px solid var(--success)}
.analysis-result.warning{border-left:3px solid var(--warning)}
.analysis-result.danger{border-left:3px solid var(--danger)}
.result-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}
.result-header .addr{font-size:.85rem;color:var(--text);word-break:break-all}
.result-detail{font-size:.8rem;color:var(--text-dim);margin-top:.4rem}
.risk-tag{font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:100px}
.risk-tag.safe{background:rgba(16,185,129,.15);color:var(--success)}
.risk-tag.medium{background:rgba(245,158,11,.15);color:var(--warning)}
.risk-tag.high{background:rgba(239,68,68,.15);color:var(--danger)}
.submit-info-box{background:rgba(99,102,241,.06);border:1px solid rgba(99,102,241,.15);border-radius:var(--radius-sm);padding:1rem;font-size:.85rem;color:var(--text-dim);margin-bottom:1rem}
.admin-page{padding:6rem 2rem 2rem}
.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:2rem}
.admin-stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;text-align:center}
.admin-stat .num{font-size:2rem;font-weight:800;color:var(--primary)}
.admin-stat .lbl{color:var(--text-muted);font-size:.8rem;margin-top:.3rem}
.admin-actions{display:flex;gap:.8rem;margin-bottom:1.5rem;flex-wrap:wrap}
.admin-filter{display:flex;gap:.5rem}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate{animation:fadeUp .8s ease-out both}
.animate-d1{animation-delay:.1s}
.animate-d2{animation-delay:.2s}
.animate-d3{animation-delay:.3s}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.pulse{animation:pulse 2s ease-in-out infinite}
@keyframes glow{0%,100%{box-shadow:0 0 20px var(--primary-glow)}50%{box-shadow:0 0 40px rgba(0,212,170,.3)}}
.glow{animation:glow 2s ease-in-out infinite}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;text-align:center;gap:2rem}.hero h1{font-size:2rem}.hero-btns{justify-content:center}.features-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}.admin-stats{grid-template-columns:repeat(2,1fr)}.admin-actions{flex-direction:column}}
.loading{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:2rem;color:var(--text-dim)}
.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hidden{display:none!important}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}