/* =========================================
   1. Base & Variables
   ========================================= */
:root {
    --bg-color: #05070a;
    --card-bg: #0d121c;
    --accent-blue: #0ea5e9;
    --accent-blue-rgb: 14, 165, 233;
    --accent-green: #10b981;
    --accent-green-rgb: 16, 185, 129;
    --text-primary: #ffffff;
    --text-secondary: #8b9bb4;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --transition-standard: 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0; padding: 0; background-color: var(--bg-color);
    color: var(--text-primary); font-family: var(--font-main); line-height: 1.6; overflow-x: hidden;
    background-image: radial-gradient(rgba(var(--accent-blue-rgb), 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
}

::-webkit-scrollbar { width: 0px; background: transparent; }

/* =========================================
   2. Navbar & Universal
   ========================================= */
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 2.5rem 5%; position: fixed; top: 0; width: 100%; z-index: 100; backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 255, 255, 0.02); }
.logo { font-weight: 800; letter-spacing: 3px; color: var(--text-primary); font-size: 1.2rem; }
.nav-links a { color: var(--text-secondary); text-decoration: none; margin-left: 2.5rem; font-size: 0.8rem; font-weight: 600; letter-spacing: 1.5px; transition: var(--transition-standard); }
.nav-links a:hover { color: var(--accent-blue); }

section { padding: 10rem 5%; max-width: 1400px; margin: 0 auto; }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 6rem; font-weight: 200; letter-spacing: 4px; color: var(--text-primary); }

/* =========================================
   3. Hero Section
   ========================================= */
.hero-section { text-align: center; padding-top: 15rem; position: relative; }
.hero-content { position: relative; z-index: 10; }
.hero-logo-container { margin-bottom: 3rem; }
.hero-logo-img { width: 130px; height: 130px; border-radius: 32px; object-fit: cover; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 35px rgba(14, 165, 233, 0.15); border: 1px solid rgba(255,255,255,0.06); transition: transform 0.4s ease;}
.hero-logo-img:hover { transform: scale(1.05) translateY(-5px); }

.hero-title { font-size: 4.5rem; margin-bottom: 2rem; font-weight: 700; letter-spacing: -1px; line-height: 1.1; }
.hero-subtitle { color: var(--text-secondary); max-width: 650px; margin: 0 auto; font-size: 1.2rem; font-weight: 300; }

/* =========================================
   3.5 Neural Core Wrapper (3D WebGL Integration)
   ========================================= */
.neural-core-wrapper {
    position: relative;
    width: 100%; max-width: 800px; /* 控制 3D 画布的宽度 */
    height: 500px; /* 控制 3D 画布的高度 */
    margin: 6rem auto 2rem auto;
    background: radial-gradient(circle at center, rgba(14, 165, 233, 0.03), transparent 70%);
    border-radius: 24px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
}

#canvas-container {
    width: 100%; height: 100%;
    position: absolute; top: 0; left: 0;
    cursor: crosshair;
    border-radius: 24px;
    overflow: hidden;
    /* 蒙版使得边缘柔和融入背景 */
    -webkit-mask-image: radial-gradient(circle, white 50%, transparent 100%);
    mask-image: radial-gradient(circle, white 50%, transparent 100%);
}

#canvas-container canvas {
    display: block; width: 100% !important; height: 100% !important;
}

.core-status-tag {
    position: absolute; top: -2rem;
    font-family: var(--font-mono); color: var(--accent-green); font-size: 0.75rem; letter-spacing: 3px;
    text-transform: uppercase; z-index: 20; opacity: 0.8;
}
.core-status-tag::before { content:''; display:inline-block; width: 6px; height: 6px; background: var(--accent-green); border-radius: 50%; margin-right: 12px; box-shadow: 0 0 10px var(--accent-green);}
#shape-name { color: var(--text-primary); font-weight: bold; margin-left: 5px;}

.core-initialize-data {
    position: absolute; bottom: -2rem;
    font-family: var(--font-mono); color: var(--text-secondary); font-size: 0.7rem; letter-spacing: 2px;
    text-transform: uppercase; opacity: 0.4; z-index: 20;
}

/* =========================================
   4. Architecture Rows
   ========================================= */
.architecture-rows { display: flex; flex-direction: column; gap: 5rem; }
.security-row { display: flex; align-items: center; justify-content: space-between; gap: 5rem; background-color: var(--card-bg); border-radius: 24px; padding: 4.5rem; border: 1px solid rgba(255, 255, 255, 0.02); transition: var(--transition-standard); }
.security-row:hover { border-color: rgba(var(--accent-blue-rgb), 0.15); box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4); }
.security-row.reverse { flex-direction: row-reverse; }
.row-text { flex: 1.1; } .row-visual { flex: 0.9; width: 100%; }

@media (max-width: 1024px) { .security-row, .security-row.reverse { flex-direction: column; align-items: flex-start; padding: 3.5rem 2.5rem; gap: 3rem; } .row-text, .row-visual { flex: none; width: 100%; } }

.panel-tag { font-family: var(--font-mono); color: var(--accent-blue); font-size: 0.75rem; letter-spacing: 2px; margin-bottom: 1.2rem; text-transform: uppercase; }
.row-text h3 { margin: 0 0 1.5rem 0; font-size: 1.9rem; font-weight: 600; letter-spacing: 1.5px; }
.panel-desc { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.8; margin: 0; }

.crypto-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.8rem; }
.crypto-list li { font-family: var(--font-mono); font-size: 0.88rem; letter-spacing: 1px; padding: 1.1rem 1.5rem; background: rgba(0, 0, 0, 0.25); border-radius: 12px; border: 1px solid rgba(255, 255, 255, 0.01); display: flex; align-items: center; transition: var(--transition-standard); }
.crypto-list li:hover { background: rgba(239, 68, 68, 0.02); border-color: rgba(239, 68, 68, 0.12); transform: translateX(5px); }
.cross { color: #ef4444; font-weight: bold; margin-right: 15px; font-size: 1.1rem; text-shadow: 0 0 10px rgba(239, 68, 68, 0.3); }

.auth-steps-v3 { display: flex; align-items: center; justify-content: space-between; background: rgba(0, 0, 0, 0.25); padding: 2.5rem 2rem; border-radius: 16px; border: 1px solid rgba(255, 255, 255, 0.01); }
@media (max-width: 550px) { .auth-steps-v3 { flex-direction: column; gap: 2rem; text-align: center; } .auth-line { display: none; } }
.auth-step-v3 { flex: 1; text-align: center; }
.auth-step-v3 .step-num { font-family: var(--font-mono); color: var(--accent-blue); font-size: 0.72rem; letter-spacing: 1px; display: block; margin-bottom: 0.6rem; opacity: 0.8; }
.auth-step-v3 h4 { margin: 0 0 0.4rem 0; font-size: 1.1rem; font-weight: 600; letter-spacing: 1px; }
.auth-step-v3 p { margin: 0; font-size: 0.8rem; color: var(--text-secondary); }
.auth-line { width: 30px; height: 1px; background: linear-gradient(90deg, rgba(var(--accent-blue-rgb), 0.3), transparent); margin: 0 0.5rem; }

/* =========================================
   5. Interactive Experience Section
   ========================================= */
.features-list { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-bottom: 8rem; }
@media (max-width: 900px) { .features-list { grid-template-columns: 1fr; } }
.feature-item { background-color: var(--card-bg); padding: 4rem 3rem; border-radius: 16px; border: 1px solid rgba(255, 255, 255, 0.02); transition: var(--transition-standard); display: flex; flex-direction: column; align-items: center; text-align: center; }
.feature-item:hover { border-color: rgba(var(--accent-blue-rgb), 0.15); box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3); transform: translateY(-5px); }
.feature-item h3 { font-weight: 500; color: var(--text-primary); margin-bottom: 1.5rem; letter-spacing: 2px;}
.feature-item p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8; max-width: 90%; }
.icon-new, .icon-search { color: var(--accent-blue); font-size: 2.2rem; margin-bottom: 1.5rem; display: flex; align-items: center; justify-content: center; width: 60px; height: 60px; background: rgba(14, 165, 233, 0.05); border-radius: 50%; border: 1px solid rgba(14, 165, 233, 0.1); }

/* --- 3D Interactive Card --- */
.demo-wrapper { text-align: center; padding: 6rem 0; border-top: 1px solid rgba(255,255,255,0.03); }
.demo-instruction { color: var(--accent-blue); font-family: var(--font-mono); font-size: 0.9rem; margin-bottom: 5rem; text-transform: uppercase; letter-spacing: 3px; text-shadow: 0 0 15px rgba(14, 165, 233, 0.3);}
.demo-flex-container { display: flex; justify-content: center; position: relative; }
.perspective-wrapper { perspective: 1200px; }

.secret-card-v2 {
    position: relative; width: 420px; height: 560px; background-color: #080b10;
    border-radius: 24px; padding: 4rem 3rem; overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.08); cursor: crosshair;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.6s ease, border-color 0.6s ease;
    transform-style: preserve-3d; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}
.scanlines { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, transparent 50%, rgba(255, 255, 255, 0.02) 51%); background-size: 100% 4px; pointer-events: none; z-index: 1; }
.card-glow { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(circle at center, rgba(var(--accent-green-rgb), 0.08), transparent 70%); opacity: 0.1; transition: opacity 0.6s; z-index: 2; }
.card-glare { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 40%); opacity: 0; pointer-events: none; z-index: 11; transition: opacity 0.6s ease; }
.blur-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px); background-color: rgba(5, 7, 10, 0.85); z-index: 10; transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1); }

.card-content { position: relative; z-index: 12; height: 100%; display: flex; flex-direction: column; justify-content: space-between; transform: translateZ(30px); }
.lock-v2 { display: flex; justify-content: center; margin-bottom: 2rem; }
.lock-body { width: 90px; height: 90px; background: rgba(255, 255, 255, 0.01); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.6s ease; box-shadow: inset 0 0 20px rgba(0,0,0,0.5); }
.premium-lock { width: 36px; height: 36px; color: rgba(255,255,255,0.3); transition: all 0.6s ease; }
.lock-shackle { transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1); transform-origin: left bottom;}

.scramble-group { flex-grow: 1; display: flex; flex-direction: column; justify-content: center; text-align: center;}
.scramble-text { font-family: var(--font-mono); color: rgba(255, 255, 255, 0.2); transition: color 0.6s; }
.scramble-group h3 { font-size: 1.3rem; font-weight: 500; letter-spacing: 2px; margin-bottom: 1.5rem; text-shadow: 0 2px 10px rgba(0,0,0,0.5);}
.scramble-group p { font-size: 0.95rem; line-height: 1.8; color: rgba(255, 255, 255, 0.15); }

.card-tags { display: flex; justify-content: center; gap: 12px; margin-top: auto; }
.tag-v2 { font-size: 0.68rem; padding: 6px 12px; border: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.3); border-radius: 6px; font-family: var(--font-mono); letter-spacing: 1px; }

/* === HOVER STATES === */
.perspective-wrapper:hover .secret-card-v2 { box-shadow: 0 40px 80px rgba(var(--accent-green-rgb), 0.15), 0 0 0 1px rgba(var(--accent-green-rgb), 0.3); border-color: transparent; }
.perspective-wrapper:hover .card-glow { opacity: 1; }
.perspective-wrapper:hover .card-glare { opacity: 1; }
.perspective-wrapper:hover .blur-overlay { backdrop-filter: blur(0px); -webkit-backdrop-filter: blur(0px); background-color: transparent; pointer-events: none; }
.perspective-wrapper:hover .lock-body { background: rgba(var(--accent-green-rgb), 0.05); border-color: rgba(var(--accent-green-rgb), 0.4); box-shadow: 0 0 30px rgba(var(--accent-green-rgb), 0.2), inset 0 0 20px rgba(var(--accent-green-rgb), 0.1); }
.perspective-wrapper:hover .premium-lock { color: var(--accent-green); filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.5));}
.perspective-wrapper:hover .lock-shackle { transform: translateY(-4px); }
.perspective-wrapper:hover .scramble-text { color: var(--text-primary); }
.perspective-wrapper:hover .scramble-group p { color: var(--text-secondary); }
.perspective-wrapper:hover .tag-v2 { border-color: rgba(var(--accent-blue-rgb), 0.4); color: var(--accent-blue); }
.perspective-wrapper:hover .tag-v2.verified { border-color: rgba(var(--accent-green-rgb), 0.4); color: var(--accent-green); font-weight: bold;}

/* =========================================
   6. Footer
   ========================================= */
footer { text-align: center; padding: 4rem 5%; color: var(--text-secondary); font-size: 0.8rem; border-top: 1px solid rgba(255,255,255,0.02); display: flex; flex-direction: column; gap: 1.2rem; }
.footer-info { display: flex; justify-content: center; align-items: center; gap: 2rem; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 2px; opacity: 0.6; }
.badge-verified { color: var(--accent-green); font-weight: bold; border: 1px solid rgba(var(--accent-green-rgb), 0.3); padding: 4px 10px; border-radius: 4px; }