| <!DOCTYPE html>
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| <html lang="zh-CN">
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| <head>
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| <meta charset="UTF-8">
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| <title>Impact & Bound Square - Enhanced</title>
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| <style>
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| body {
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| margin: 0;
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| overflow: hidden;
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| background-color: #000;
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| font-family: 'Inter', -apple-system, sans-serif;
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| }
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| canvas { display: block; }
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|
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| #loginForm {
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| position: absolute;
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| top: 50%;
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| left: 50%;
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| transform: translate(-50%, -40%);
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| opacity: 0;
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| visibility: hidden;
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| transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
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| z-index: 10;
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| width: 280px;
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| padding: 45px;
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| background: rgba(255, 255, 255, 0.02);
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| backdrop-filter: blur(20px);
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| -webkit-backdrop-filter: blur(20px);
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| border-radius: 40px;
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| border: 1px solid rgba(255, 255, 255, 0.08);
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| }
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|
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| #loginForm.visible {
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| opacity: 1;
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| visibility: visible;
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| transform: translate(-50%, -50%);
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| }
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|
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| .label {
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| color: rgba(255, 255, 255, 0.3);
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| font-size: 10px;
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| letter-spacing: 4px;
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| margin-bottom: 8px;
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| text-transform: uppercase;
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| }
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|
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| .form-group {
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| position: relative;
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| margin-bottom: 35px;
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| }
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|
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| .form-group input {
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| width: 100%;
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| padding: 12px 0;
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| background: transparent;
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| border: none;
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| border-bottom: 1px solid rgba(255, 255, 255, 0.1);
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| color: #fff;
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| font-size: 14px;
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| outline: none;
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| }
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|
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| .form-group::after {
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| content: '';
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| position: absolute;
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| bottom: 0; left: 0;
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| width: 0; height: 1px;
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| background: #fff;
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| transition: width 0.6s ease;
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| }
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|
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| .form-group input:focus ~ ::after { width: 100%; }
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|
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| #loginButton {
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| width: 100%;
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| padding: 16px;
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| background: #fff;
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| border: none;
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| border-radius: 50px;
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| color: #000;
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| font-size: 11px;
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| font-weight: 800;
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| letter-spacing: 6px;
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| cursor: pointer;
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| transition: all 0.4s;
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| margin-top: 10px;
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| }
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| #loginButton:hover {
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| transform: scale(1.05);
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| box-shadow: 0 0 40px rgba(255, 255, 255, 0.4);
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| }
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|
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| .timestamp {
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| position: absolute;
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| top: 40px;
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| right: 40px;
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| color: rgba(255, 255, 255, 0.15);
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| font-size: 10px;
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| font-family: monospace;
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| }
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| </style>
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| </head>
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| <body>
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| <div class="timestamp" id="timer"></div>
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| <canvas id="sandCanvas"></canvas>
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|
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| <div id="loginForm">
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| <div class="form-group">
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| <div class="label">Identity</div>
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| <input type="text" id="username" placeholder=" " autocomplete="off">
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| </div>
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| <div class="form-group">
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| <div class="label">Access Code</div>
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| <input type="password" id="password" placeholder=" " autocomplete="off">
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| </div>
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| <button id="loginButton">CONNECT</button>
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| </div>
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|
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| <script>
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| const canvas = document.getElementById('sandCanvas');
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| const ctx = canvas.getContext('2d');
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| const loginForm = document.getElementById('loginForm');
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| const timerEl = document.getElementById('timer');
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|
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| let width, height, particles = [];
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| const particleCount = 4500;
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| const mouseThreshold = 220;
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| let isHovering = false;
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| let noiseTimer = 0;
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|
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| function updateTimer() {
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| const now = new Date();
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| timerEl.innerText = now.toLocaleString('en-GB').toUpperCase();
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| }
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| setInterval(updateTimer, 1000);
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|
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| window.addEventListener('resize', init);
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| window.addEventListener('mousemove', (e) => {
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| const dx = e.clientX - width / 2;
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| const dy = e.clientY - height / 2;
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| isHovering = Math.sqrt(dx*dx + dy*dy) < mouseThreshold;
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| });
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|
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| function isInsideRoundedSquare(px, py, halfSide, radius) {
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| const dx = Math.abs(px - width / 2);
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| const dy = Math.abs(py - height / 2);
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| if (dx > halfSide || dy > halfSide) return false;
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| if (dx > halfSide - radius && dy > halfSide - radius) {
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| const cx = dx - (halfSide - radius);
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| const cy = dy - (halfSide - radius);
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| return (cx * cx + cy * cy <= radius * radius);
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| }
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| return true;
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| }
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|
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| class Particle {
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| constructor() {
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| this.init();
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| }
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|
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| init() {
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| const angle = Math.random() * Math.PI * 2;
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|
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| const r = 5 + Math.random() * 15;
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| this.x = width / 2 + Math.cos(angle) * r;
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| this.y = height / 2 + Math.sin(angle) * r;
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| this.vx = Math.cos(angle) * 2;
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| this.vy = Math.sin(angle) * 2;
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| this.size = Math.random() * 1.6;
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| this.alpha = Math.random() * 0.5 + 0.2;
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| this.isEscaping = false;
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| }
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|
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| update(breath) {
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| const dx = this.x - width / 2;
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| const dy = this.y - height / 2;
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| const dist = Math.sqrt(dx * dx + dy * dy) || 1;
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|
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| if (isHovering) {
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| this.vx += (Math.random() - 0.5) * 4;
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| this.vy += (Math.random() - 0.5) * 4;
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| } else {
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|
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| const repulsionRadius = 45;
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| if (dist < repulsionRadius) {
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| const force = (repulsionRadius - dist) / repulsionRadius;
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| this.vx += (dx / dist) * force * 6;
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| this.vy += (dy / dist) * force * 6;
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| }
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| const pushBase = Math.pow(breath, 5) * 14;
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| const randomScatter = (Math.random() - 0.5) * pushBase * 0.5;
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| this.vx += (dx / dist) * pushBase + randomScatter;
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| this.vy += (dy / dist) * pushBase + randomScatter;
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| if (breath > 0.88 && Math.random() > 0.98) {
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| this.isEscaping = true;
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| }
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| const side = 180;
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| const cornerR = 80;
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|
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| if (!this.isEscaping) {
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| if (!isInsideRoundedSquare(this.x + this.vx, this.y + this.vy, side, cornerR)) {
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| this.vx *= -0.4;
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| this.vy *= -0.4;
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| this.vx += (Math.random() - 0.5) * 2;
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| this.vy += (Math.random() - 0.5) * 2;
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| }
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|
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| const targetR = 140;
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| const pull = (targetR - dist) * 0.012;
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| this.vx += (dx / dist) * pull;
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| this.vy += (dy / dist) * pull;
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| }
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| }
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|
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| this.x += this.vx;
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| this.y += this.vy;
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| const friction = this.isEscaping ? 0.98 : 0.86;
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| this.vx *= friction;
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| this.vy *= friction;
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| if (dist > width * 0.6 || (this.isEscaping && Math.abs(this.vx) < 0.05)) {
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| this.init();
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| }
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| }
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|
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| draw(breath) {
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| const b = 180 + breath * 75;
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| const finalAlpha = this.isEscaping ? this.alpha * 0.4 : this.alpha;
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| ctx.fillStyle = `rgba(${b}, ${b}, ${b}, ${finalAlpha})`;
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| ctx.fillRect(this.x, this.y, this.size, this.size);
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| }
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| }
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|
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| function init() {
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| width = canvas.width = window.innerWidth;
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| height = canvas.height = window.innerHeight;
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| particles = [];
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| for (let i = 0; i < particleCount; i++) particles.push(new Particle());
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| }
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|
|
| function drawCore(breath) {
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| if (isHovering) return;
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| const size = 10 + breath * 4;
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| ctx.save();
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| ctx.shadowBlur = 40 * breath;
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| ctx.shadowColor = '#fff';
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| ctx.fillStyle = '#fff';
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| ctx.beginPath();
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| ctx.arc(width / 2, height / 2, size, 0, Math.PI * 2);
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| ctx.fill();
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| ctx.restore();
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| }
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|
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| function animate() {
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| ctx.fillStyle = 'rgba(0, 0, 0, 0.25)';
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| ctx.fillRect(0, 0, width, height);
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|
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| noiseTimer += 0.04;
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| const breath = Math.pow((Math.sin(noiseTimer) + 1) / 2, 2);
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|
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| if (isHovering) {
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| loginForm.classList.add('visible');
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| } else {
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| loginForm.classList.remove('visible');
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| }
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|
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| particles.forEach(p => {
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| p.update(breath);
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| p.draw(breath);
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| });
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|
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| drawCore(breath);
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| requestAnimationFrame(animate);
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| }
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|
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| init();
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| updateTimer();
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| animate();
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| </script>
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| </body>
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| </html> |
