style: drop icon slop, swap primary to caramel, kill particles

- Remove 8 duplicated generic SVG icons from tech cards
- Switch --color-primary from teal (#1D7874) to gold (#D4A574)
- Remove particle canvas system (~70 lines JS, canvas element, CSS)
- Grain texture + steam now carry atmosphere alone

main.js

@@ -55,75 +55,8 @@ function initSkillBars() {
   skillItems.forEach(item => observer.observe(item));
 }
 
-// ===== PARTICLE BACKGROUND =====
-function initParticles() {
-  const canvas = document.getElementById('particles');
-  if (!canvas) return;
-  
-  const ctx = canvas.getContext('2d');
-  let particles = [];
-  let animationId;
-  
-  function resize() {
-    canvas.width = window.innerWidth;
-    canvas.height = window.innerHeight;
-  }
-  
-  class Particle {
-    constructor() {
-      this.x = Math.random() * canvas.width;
-      this.y = Math.random() * canvas.height;
-      this.vx = (Math.random() - 0.5) * 0.3;
-      this.vy = (Math.random() - 0.5) * 0.3;
-      this.radius = Math.random() * 1.5 + 0.5;
-      this.opacity = Math.random() * 0.3 + 0.1;
-    }
-    
-    update() {
-      this.x += this.vx;
-      this.y += this.vy;
-      
-      if (this.x < 0 || this.x > canvas.width) this.vx *= -1;
-      if (this.y < 0 || this.y > canvas.height) this.vy *= -1;
-    }
-    
-    draw() {
-      ctx.beginPath();
-      ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
-      ctx.fillStyle = `rgba(111, 78, 55, ${this.opacity})`;
-      ctx.fill();
-    }
-  }
-  
-  function init() {
-    resize();
-    particles = [];
-    const particleCount = Math.floor((canvas.width * canvas.height) / 15000);
-    for (let i = 0; i < particleCount; i++) {
-      particles.push(new Particle());
-    }
-  }
-  
-  function animate() {
-    ctx.clearRect(0, 0, canvas.width, canvas.height);
-    
-    particles.forEach(particle => {
-      particle.update();
-      particle.draw();
-    });
-    
-    animationId = requestAnimationFrame(animate);
-  }
-  
-  window.addEventListener('resize', () => {
-    cancelAnimationFrame(animationId);
-    init();
-    animate();
-  });
-  
-  init();
-  animate();
-}
+// ===== PARTICLE BACKGROUND (removed) =====
+// initParticles removed — grain texture + steam carry the atmosphere
 
 // ===== INTERACTIVE TESTIMONIALS =====
 function initTestimonials() {
@@ -246,7 +179,6 @@ document.addEventListener('DOMContentLoaded', () => {
   initTypewriter();
   initScrollProgress();
   initSkillBars();
-  initParticles();
   initTestimonials();
   initParallax();
   initMetricsCounter();