Product Landing Page

:root {
  --page-bg: #0a0a0f;
  --page-surface: #141418;
  --page-text: #f5f5f7;
  --page-muted: #86868b;
  --page-accent: #2997ff;
  --page-accent-alt: #bf5af2;
  --page-gold: #ffd60a;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--page-bg);
  color: var(--page-text);
  font-family: "SF Pro Display", "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Three.js canvas ── */
#canvas-container {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

#canvas-container canvas {
  width: 100%;
  height: 100%;
}

/* ── Sections ── */
.section {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
}

/* ── Hero ── */
.hero-section {
  text-align: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
  perspective: 800px;
}

.hero-tagline {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--page-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
  opacity: 0;
}

.scroll-indicator {
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--page-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
}

.scroll-indicator svg {
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%,
  100% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(6px);
    opacity: 0.4;
  }
}

.reduced-motion .scroll-indicator svg {
  animation: none;
}

/* ── Feature Track (pinned) ── */
.feature-track {
  position: relative;
  z-index: 1;
  height: 300vh;
}

.feature-container {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 8%;
}

.feature-content {
  max-width: 420px;
  position: relative;
}

/* Step dots */
.step-dots {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: background 0.4s ease, transform 0.4s ease;
}

.step-dot.active {
  background: var(--page-accent);
  transform: scale(1.3);
}

/* Feature cards */
.feature-card {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.feature-card.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  position: relative;
}

.reduced-motion .feature-card {
  transition: none;
}

.feature-icon {
  width: 48px;
  height: 48px;
  color: var(--page-accent);
  margin-bottom: 1.5rem;
}

.feature-label {
  font-size: 0.7rem;
  color: var(--page-accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
}

.feature-heading {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 1rem;
  line-height: 1.15;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--page-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.feature-stat {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--page-accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: 0.8rem;
  color: var(--page-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Specs Grid ── */
.specs-section {
  padding: 8rem 2rem;
}

.specs-heading {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4rem;
  text-align: center;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 800px;
  width: 100%;
}

.spec-card {
  background: var(--page-surface);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transform: translateY(30px) scale(0.95);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.spec-card:hover {
  border-color: rgba(41, 151, 255, 0.2);
  box-shadow: 0 8px 32px rgba(41, 151, 255, 0.08);
}

.reduced-motion .spec-card {
  opacity: 1;
  transform: none;
}

.spec-icon {
  width: 24px;
  height: 24px;
  color: var(--page-accent);
}

.spec-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--page-text);
}

.spec-label {
  font-size: 0.7rem;
  color: var(--page-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── CTA Section ── */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-price {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 1rem;
  color: var(--page-text);
}

.cta-tagline {
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  color: var(--page-muted);
  margin-bottom: 3rem;
  opacity: 0;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.9rem 2.5rem;
  border-radius: 999px;
  font: 600 0.9rem / 1 "SF Pro Display", "Inter", system-ui, sans-serif;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  opacity: 0;
  transform: translateY(20px);
}

.btn-primary {
  background: var(--page-gold);
  color: #0a0a0f;
}

.btn-primary:hover {
  background: #ffe040;
  box-shadow: 0 0 24px rgba(255, 214, 10, 0.3);
}

.btn-secondary {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  color: var(--page-accent);
}

.btn-secondary:hover {
  border-color: var(--page-accent);
  box-shadow: 0 0 16px rgba(41, 151, 255, 0.15);
}

.reduced-motion .btn,
.reduced-motion .cta-tagline {
  opacity: 1;
  transform: none;
}

/* Gradient orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(41, 151, 255, 0.12);
  bottom: -100px;
  left: -100px;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(191, 90, 242, 0.1);
  top: -50px;
  right: -80px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .feature-container {
    justify-content: center;
    padding: 0 2rem;
  }

  .specs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 4rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .specs-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .spec-card {
    padding: 1.5rem 1rem;
  }
}

if (!window.MotionPreference) {
  const __mql = window.matchMedia("(prefers-reduced-motion: reduce)");
  const __listeners = new Set();

  const MotionPreference = {
    prefersReducedMotion() {
      return __mql.matches;
    },
    setOverride(value) {
      const reduced = Boolean(value);
      document.documentElement.classList.toggle("reduced-motion", reduced);
      window.dispatchEvent(new CustomEvent("motion-preference", { detail: { reduced } }));
      for (const listener of __listeners) {
        try {
          listener({ reduced, override: reduced, systemReduced: __mql.matches });
        } catch {}
      }
    },
    onChange(listener) {
      __listeners.add(listener);
      try {
        listener({
          reduced: __mql.matches,
          override: null,
          systemReduced: __mql.matches,
        });
      } catch {}
      return () => __listeners.delete(listener);
    },
    getState() {
      return { reduced: __mql.matches, override: null, systemReduced: __mql.matches };
    },
  };

  window.MotionPreference = MotionPreference;
}

function prefersReducedMotion() {
  return window.MotionPreference.prefersReducedMotion();
}

function initDemoShell() {
  // No-op shim in imported standalone snippets.
}

import * as THREE from "three";
import gsap from "gsap";
import { ScrollTrigger } from "gsap/ScrollTrigger";
import { SplitText } from "gsap/SplitText";
import { ScrambleTextPlugin } from "gsap/ScrambleTextPlugin";
import Lenis from "lenis";

gsap.registerPlugin(ScrollTrigger, SplitText, ScrambleTextPlugin);

// ── Demo Shell ──
initDemoShell({
  title: "Product Landing Page",
  category: "pages",
  tech: ["three.js", "gsap", "lenis", "splittext"],
});

// ── Lenis ──
const lenis = new Lenis({ lerp: 0.1, smoothWheel: true });
lenis.on("scroll", ScrollTrigger.update);
gsap.ticker.add((time) => lenis.raf(time * 1000));
gsap.ticker.lagSmoothing(0);

let reduced = prefersReducedMotion();
if (reduced) document.documentElement.classList.add("reduced-motion");

window.addEventListener("motion-preference", (e) => {
  reduced = e.detail.reduced;
  document.documentElement.classList.toggle("reduced-motion", reduced);
  ScrollTrigger.refresh();
});

const dur = (d) => (reduced ? 0 : d);

// ═══════════════════════════════════════════════════════════════════════
// THREE.JS SETUP
// ═══════════════════════════════════════════════════════════════════════

const container = document.getElementById("canvas-container");
const scene = new THREE.Scene();
scene.background = new THREE.Color("#0a0a0f");

const camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 100);
camera.position.set(0, 0.5, 5);

const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
renderer.toneMapping = THREE.ACESFilmicToneMapping;
renderer.toneMappingExposure = 1.3;
container.appendChild(renderer.domElement);

// ── Lighting ──
scene.add(new THREE.AmbientLight(0x111122, 0.4));

const keyLight = new THREE.DirectionalLight(0xffffff, 2.5);
keyLight.position.set(4, 5, 5);
scene.add(keyLight);

const fillLight = new THREE.DirectionalLight(0x2997ff, 1.2);
fillLight.position.set(-4, 2, -3);
scene.add(fillLight);

const rimLight = new THREE.DirectionalLight(0xbf5af2, 1.5);
rimLight.position.set(0, -2, -5);
scene.add(rimLight);

// ── Product — AirPods-style Earbuds ──
const productMat = new THREE.MeshPhysicalMaterial({
  color: 0xf5f5f7,
  metalness: 0.95,
  roughness: 0.05,
  clearcoat: 1.0,
  clearcoatRoughness: 0.03,
  reflectivity: 1.0,
});

// Earbud body profile (LatheGeometry) — traces cross-section of an earbud
const earbudProfile = [
  new THREE.Vector2(0.0, -0.3), // Bottom center (stem junction)
  new THREE.Vector2(0.12, -0.25), // Slight outward taper at base
  new THREE.Vector2(0.22, -0.15), // Widening toward body
  new THREE.Vector2(0.32, 0.0), // Main body widest point (lower)
  new THREE.Vector2(0.35, 0.15), // Body maximum width
  new THREE.Vector2(0.34, 0.3), // Still wide, slight taper
  new THREE.Vector2(0.3, 0.42), // Tapering toward speaker face
  new THREE.Vector2(0.24, 0.5), // Speaker face edge
  new THREE.Vector2(0.15, 0.55), // Speaker face rounding
  new THREE.Vector2(0.0, 0.57), // Top center (speaker face)
];

function createEarbud() {
  const group = new THREE.Group();

  // Body — revolved earbud shape
  const bodyGeo = new THREE.LatheGeometry(earbudProfile, 48);
  const bodyMesh = new THREE.Mesh(bodyGeo, productMat);
  group.add(bodyMesh);

  // Stem — capsule extending downward
  const stemGeo = new THREE.CapsuleGeometry(0.04, 0.52, 8, 16);
  const stemMesh = new THREE.Mesh(stemGeo, productMat);
  stemMesh.position.y = -0.56;
  group.add(stemMesh);

  return { group, bodyGeo, stemGeo };
}

const leftEarbud = createEarbud();
const rightEarbud = createEarbud();

// Position pair: tilted outward like resting earbuds
leftEarbud.group.position.x = -0.55;
leftEarbud.group.rotation.z = 0.15;

rightEarbud.group.position.x = 0.55;
rightEarbud.group.rotation.z = -0.15;

// Parent group — this is the `product` used by all animation code
const product = new THREE.Group();
product.add(leftEarbud.group);
product.add(rightEarbud.group);
product.position.set(0, 0.3, 0);
scene.add(product);

// ── Fog ──
scene.fog = new THREE.FogExp2(0x0a0a0f, 0.03);

// ── Animation state ──
const state = {
  productScale: 0.6,
  productX: 0,
  productRotY: 0,
  activeFeature: 0,
};

// ═══════════════════════════════════════════════════════════════════════
// HERO ENTRANCE
// ═══════════════════════════════════════════════════════════════════════

const heroTitle = document.querySelector(".hero-title");
const heroTagline = document.querySelector(".hero-tagline");

// SplitText for hero
const titleSplit = new SplitText(heroTitle, { type: "chars", charsClass: "char" });
gsap.set(titleSplit.chars, {
  opacity: 0,
  y: reduced ? 0 : 60,
  rotateX: reduced ? 0 : -90,
});

const heroTl = gsap.timeline({ delay: 0.3 });

// Scale product in
heroTl
  .to(state, {
    productScale: 1,
    duration: dur(1.4),
    ease: "expo.out",
  })
  .to(
    titleSplit.chars,
    {
      opacity: 1,
      y: 0,
      rotateX: 0,
      duration: dur(0.6),
      ease: "back.out(1.4)",
      stagger: { each: 0.03 },
    },
    0.3
  )
  .to(
    heroTagline,
    {
      opacity: 1,
      y: 0,
      duration: dur(0.8),
      ease: "expo.out",
    },
    0.7
  )
  .to(
    "#scroll-indicator",
    {
      opacity: 1,
      duration: dur(0.6),
      ease: "expo.out",
    },
    1.2
  );

// ═══════════════════════════════════════════════════════════════════════
// SCROLL: Hero → Features transition (product shifts right)
// ═══════════════════════════════════════════════════════════════════════

gsap.to(state, {
  productX: 2.5,
  productScale: 0.7,
  ease: "none",
  scrollTrigger: {
    trigger: ".hero-section",
    start: "bottom bottom",
    end: "+=300",
    scrub: 1.5,
  },
});

// ═══════════════════════════════════════════════════════════════════════
// FEATURES: Pinned section with content swap
// ═══════════════════════════════════════════════════════════════════════

const featureCards = document.querySelectorAll(".feature-card");
const stepDots = document.querySelectorAll(".step-dot");

// Show first card initially
featureCards[0].classList.add("active");

// Feature stat targets
const statTargets = [
  { id: "stat-anc", target: 40, suffix: "" },
  { id: "stat-spatial", target: 360, suffix: "°" },
  { id: "stat-battery", target: 50, suffix: "" },
];

// Product rotation angles per feature
const featureRotations = [0, Math.PI * 0.6, Math.PI * 1.2];
const featureColors = [
  new THREE.Color(0xf5f5f7), // White/silver
  new THREE.Color(0x2997ff), // Blue
  new THREE.Color(0xffd60a), // Gold
];

function setActiveFeature(index) {
  if (index === state.activeFeature && featureCards[index].classList.contains("active")) return;

  featureCards.forEach((c) => c.classList.remove("active"));
  stepDots.forEach((d) => d.classList.remove("active"));

  featureCards[index].classList.add("active");
  stepDots[index].classList.add("active");

  // Animate product rotation and color
  if (!reduced) {
    gsap.to(state, {
      productRotY: featureRotations[index],
      duration: 0.8,
      ease: "expo.out",
    });
  }

  // Animate counter
  const stat = statTargets[index];
  const el = document.getElementById(stat.id);
  if (el && el.dataset.animated !== "true") {
    el.dataset.animated = "true";
    if (reduced) {
      el.textContent = stat.target + stat.suffix;
    } else {
      const counter = { val: 0 };
      gsap.to(counter, {
        val: stat.target,
        duration: 1.2,
        ease: "power2.out",
        onUpdate: () => {
          el.textContent = Math.round(counter.val) + stat.suffix;
        },
      });
    }
  }

  state.activeFeature = index;
}

// ScrollTrigger for feature track
ScrollTrigger.create({
  trigger: ".feature-track",
  start: "top top",
  end: "bottom bottom",
  scrub: 0,
  onUpdate: (self) => {
    const p = self.progress;
    if (p < 0.33) setActiveFeature(0);
    else if (p < 0.66) setActiveFeature(1);
    else setActiveFeature(2);

    // Color lerp
    const colorProgress = p * (featureColors.length - 1);
    const ci = Math.floor(colorProgress);
    const ct = colorProgress - ci;
    const c1 = featureColors[Math.min(ci, featureColors.length - 1)];
    const c2 = featureColors[Math.min(ci + 1, featureColors.length - 1)];
    productMat.color.lerpColors(c1, c2, ct);
  },
});

// ═══════════════════════════════════════════════════════════════════════
// SPECS GRID: Staggered entrance
// ═══════════════════════════════════════════════════════════════════════

const specsHeading = document.querySelector(".specs-heading");
if (specsHeading) {
  const specsSplit = new SplitText(specsHeading, { type: "chars", charsClass: "char" });
  gsap.set(specsSplit.chars, { opacity: 0, y: reduced ? 0 : 30 });

  gsap.to(specsSplit.chars, {
    opacity: 1,
    y: 0,
    duration: dur(0.5),
    ease: "back.out(1.2)",
    stagger: { each: 0.02 },
    scrollTrigger: {
      trigger: ".specs-section",
      start: "top 75%",
      toggleActions: "play none none reverse",
    },
  });
}

gsap.to(".spec-card", {
  opacity: 1,
  y: 0,
  scale: 1,
  duration: dur(0.6),
  ease: "expo.out",
  stagger: {
    each: 0.08,
    from: "center",
    grid: [2, 3],
  },
  scrollTrigger: {
    trigger: ".specs-grid",
    start: "top 80%",
    toggleActions: "play none none reverse",
  },
});

// ═══════════════════════════════════════════════════════════════════════
// CTA: ScrambleText price reveal
// ═══════════════════════════════════════════════════════════════════════

const ctaPrice = document.getElementById("cta-price");

if (reduced) {
  ctaPrice.textContent = "$299";
  gsap.set(".cta-tagline", { opacity: 1 });
  gsap.set(".btn", { opacity: 1, y: 0 });
} else {
  gsap.set(ctaPrice, { opacity: 0 });

  ScrollTrigger.create({
    trigger: ".cta-section",
    start: "top 60%",
    once: true,
    onEnter: () => {
      const ctaTl = gsap.timeline();

      ctaTl
        .to(ctaPrice, { opacity: 1, duration: 0.1 })
        .to(ctaPrice, {
          duration: 1.0,
          scrambleText: {
            text: "$299",
            chars: "0123456789$",
            speed: 0.3,
          },
        })
        .to(
          ".cta-tagline",
          {
            opacity: 1,
            duration: 0.6,
            ease: "expo.out",
          },
          "-=0.3"
        )
        .to(
          ".btn",
          {
            opacity: 1,
            y: 0,
            duration: 0.5,
            ease: "back.out(1.7)",
            stagger: 0.1,
          },
          "-=0.2"
        );
    },
  });
}

// ═══════════════════════════════════════════════════════════════════════
// THREE.JS ANIMATION LOOP
// ═══════════════════════════════════════════════════════════════════════

const clock = new THREE.Clock();

function animate() {
  requestAnimationFrame(animate);
  const elapsed = clock.getElapsedTime();

  // Apply scale and position from scroll state
  product.scale.setScalar(state.productScale);
  product.position.x = state.productX;

  // Rotation: base from scroll + slow auto-rotation
  if (!reduced) {
    product.rotation.y = state.productRotY + elapsed * 0.15;
    product.rotation.x = Math.sin(elapsed * 0.1) * 0.05;
  } else {
    product.rotation.y = state.productRotY;
  }

  renderer.render(scene, camera);
}

animate();

// ── Resize ──
window.addEventListener("resize", () => {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
});

// ── Cleanup ──
window.addEventListener("beforeunload", () => {
  leftEarbud.bodyGeo.dispose();
  leftEarbud.stemGeo.dispose();
  rightEarbud.bodyGeo.dispose();
  rightEarbud.stemGeo.dispose();
  productMat.dispose();
  renderer.dispose();
});

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Product Landing Page — stealthisdesign</title>
  <link rel="stylesheet" href="style.css">
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</head>
<body>
  <!-- Three.js canvas (fixed behind everything) -->
  <div id="canvas-container" aria-hidden="true"></div>

  <!-- Hero -->
  <section class="section hero-section" id="hero">
    <div class="hero-content">
      <h1 class="hero-title">Aether Pro</h1>
      <p class="hero-tagline">Sound, Reimagined.</p>
      <div class="scroll-indicator" id="scroll-indicator">
        <span>Discover</span>
        <svg width="14" height="20" viewBox="0 0 14 20" fill="none">
          <path d="M7 0v16M1 10l6 6 6-6" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
        </svg>
      </div>
    </div>
  </section>

  <!-- Feature Showcase (pinned) -->
  <section class="feature-track" id="features">
    <div class="feature-container">
      <div class="feature-content">
        <!-- Step indicators -->
        <div class="step-dots">
          <span class="step-dot active" data-step="0"></span>
          <span class="step-dot" data-step="1"></span>
          <span class="step-dot" data-step="2"></span>
        </div>

        <!-- Feature cards -->
        <div class="feature-card" id="feature-0">
          <div class="feature-icon">
            <svg viewBox="0 0 48 48" fill="none" aria-hidden="true">
              <path d="M6 24h4M10 16l3 2M10 32l3-2M38 24h4M35 16l-3 2M35 32l-3-2" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
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            </svg>
          </div>
          <span class="feature-label">01 — Silence</span>
          <h2 class="feature-heading">Active Noise Cancellation</h2>
          <p class="feature-desc">Adaptive hybrid ANC with dual microphones eliminates up to 40dB of ambient noise. The world disappears, and only your music remains.</p>
          <div class="feature-stat">
            <span class="stat-value" id="stat-anc">0</span>
            <span class="stat-unit">dB noise cancelled</span>
          </div>
        </div>

        <div class="feature-card" id="feature-1">
          <div class="feature-icon">
            <svg viewBox="0 0 48 48" fill="none" aria-hidden="true">
              <circle cx="24" cy="24" r="18" stroke="currentColor" stroke-width="1.5" stroke-dasharray="4 3"/>
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              <path d="M24 6v4M24 38v4M6 24h4M38 24h4" stroke="currentColor" stroke-width="1" stroke-linecap="round"/>
            </svg>
          </div>
          <span class="feature-label">02 — Dimension</span>
          <h2 class="feature-heading">Spatial Audio</h2>
          <p class="feature-desc">Dynamic head tracking places sound precisely in 3D space. Turn your head and the soundstage stays anchored to the world around you.</p>
          <div class="feature-stat">
            <span class="stat-value" id="stat-spatial">0</span>
            <span class="stat-unit">degrees of immersion</span>
          </div>
        </div>

        <div class="feature-card" id="feature-2">
          <div class="feature-icon">
            <svg viewBox="0 0 48 48" fill="none" aria-hidden="true">
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            </svg>
          </div>
          <span class="feature-label">03 — Endurance</span>
          <h2 class="feature-heading">50-Hour Battery</h2>
          <p class="feature-desc">Marathon listening sessions without interruption. Quick charge delivers 5 hours of playback from just 10 minutes of charging.</p>
          <div class="feature-stat">
            <span class="stat-value" id="stat-battery">0</span>
            <span class="stat-unit">hours total playtime</span>
          </div>
        </div>
      </div>
    </div>
  </section>

  <!-- Specs Grid -->
  <section class="section specs-section" id="specs">
    <h2 class="specs-heading">Built for the future.</h2>
    <div class="specs-grid">
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2z" stroke="currentColor" stroke-width="1.5"/><path d="M8 12l3 3 5-5" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>
        </span>
        <span class="spec-value">IP68</span>
        <span class="spec-label">Water Resistant</span>
      </div>
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><path d="M12 18.5a6.5 6.5 0 100-13 6.5 6.5 0 000 13zM12 2v2M12 20v2M4.22 4.22l1.42 1.42M18.36 18.36l1.42 1.42M2 12h2M20 12h2M4.22 19.78l1.42-1.42M18.36 5.64l1.42-1.42" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
        </span>
        <span class="spec-value">11mm</span>
        <span class="spec-label">Custom Driver</span>
      </div>
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><path d="M5 12.55a11 11 0 0114.08 0M1.42 9a16 16 0 0121.16 0M8.53 16.11a6 6 0 016.95 0M12 20h.01" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>
        </span>
        <span class="spec-value">BT 5.3</span>
        <span class="spec-label">Bluetooth</span>
      </div>
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><circle cx="12" cy="12" r="3" stroke="currentColor" stroke-width="1.5"/><path d="M12 1v4M12 19v4M4.22 4.22L7.05 7.05M16.95 16.95l2.83 2.83M1 12h4M19 12h4M4.22 19.78l2.83-2.83M16.95 7.05l2.83-2.83" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
        </span>
        <span class="spec-value">4.2g</span>
        <span class="spec-label">Per Earbud</span>
      </div>
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><path d="M19 11H5a2 2 0 00-2 2v6a2 2 0 002 2h14a2 2 0 002-2v-6a2 2 0 00-2-2zM7 11V7a5 5 0 0110 0v4" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
        </span>
        <span class="spec-value">LDAC</span>
        <span class="spec-label">Hi-Res Codec</span>
      </div>
      <div class="spec-card">
        <span class="spec-icon">
          <svg viewBox="0 0 24 24" fill="none"><rect x="2" y="6" width="20" height="12" rx="2" stroke="currentColor" stroke-width="1.5"/><path d="M6 10h4v4H6z" stroke="currentColor" stroke-width="1"/><path d="M14 10h4" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/><path d="M14 14h4" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/></svg>
        </span>
        <span class="spec-value">USB-C</span>
        <span class="spec-label">Quick Charge</span>
      </div>
    </div>
  </section>

  <!-- CTA -->
  <section class="section cta-section" id="cta">
    <div class="cta-content">
      <div class="cta-price" id="cta-price">$299</div>
      <p class="cta-tagline">Silence has never sounded so good.</p>
      <div class="cta-buttons">
        <button class="btn btn-primary">Buy Now</button>
        <button class="btn btn-secondary">Learn More</button>
      </div>
    </div>
    <!-- Gradient orbs -->
    <div class="orb orb-1" aria-hidden="true"></div>
    <div class="orb orb-2" aria-hidden="true"></div>
  </section>

  <script type="module" src="script.js"></script>
</body>
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