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HTML

              
                 <section id="intro" class="section section--intro">
  <!-- mousemove event layer (for background effect) -->
  <div class="mouse-tracker-layer"></div>

  <div class="square-dark-wrapper">
    <div class="square-dark"></div>
  </div>

  <div class="pango-logo-group">
    <!-- Outer logo outline animation -->
    <svg class="outer-logo-circle" viewBox="0 0 700 700">
      <circle class="circle" fill="none" cx="350" cy="350" r="330"/>
    </svg>

    <!-- Pango SVG logo -->
    <svg class="pango-logo" viewBox="91 185 700 700" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
      <defs>
        <circle id="a" cx="350.5" cy="351" r="329"/>
        <mask id="b" x="-4" y="-4" width="666" height="666">
          <path fill="#fff" d="M17.5 18h666v666h-666z"/>
          <use xlink:href="#a"/>
        </mask>
        <path d="M183 154c-12.15 0-183-49-183-49L154 0s51 119.85 51 132c0 12.15-9.85 22-22 22z" id="d"/>
        <path d="M22 154c12.15 0 183-49 183-49L51 0S0 119.85 0 132c0 12.15 9.85 22 22 22z" id="f"/>
      </defs>
      <g fill="none" fill-rule="evenodd" transform="translate(91 185)">
        <circle cx="350" cy="350" r="350"/>
        <mask id="c" fill="#fff">
          <use xlink:href="#a"/>
        </mask>
        <use fill="#672F56" xlink:href="#a"/>
        <use stroke-opacity="0" stroke="#979797" mask="url(#b)" stroke-width="8" xlink:href="#a"/>
        <g mask="url(#c)">
          <path d="M667.8 262.12c-9.42-4.4-20.14-8.7-30.63-12.65 3.38-15.18 5.72-30.57 7-46.07 4.8-57-4.3-78.25-32.27-99.45-27.96-21.2-74.86-19.9-109.56-10.53-10.65 2.86-22.4 6.7-33.56 10.7-6.58-11.4-13.94-23.4-21-33.56-20.62-29.46-55.66-60.64-90.7-62.38-35.06-1.74-55.74 8.66-88.74 55.45-9 12.7-17.1 25.98-24.26 39.78-10.57-3.7-21.56-7.3-31.58-10-34.73-9.3-81.62-10.6-109.58 10.6-27.96 21.2-37.07 42.4-32.27 99.5 1.27 15.5 3.6 30.9 7 46.1-10.5 4-21.2 8.3-30.62 12.7-32.6 15.2-69.4 44.3-77.18 78.5-7.8 34.2-1.13 56.4 39.2 97C27.35 456 42 471.1 52.52 482.1c-3.14 14.3-5.35 28.76-6.63 43.33-5.2 57 3.8 78.3 31.7 99.66 27.8 21.3 94 24.2 128.7 15.1 34.7-9.2 59.1-31.6 59.1-31.6l176.3 5.7s48 20.3 84 29.7c36 9.4 84.5 10.6 113.4-11.6 28.8-22.1 38.1-44.1 32.8-103.1-1.4-16.3-4-32.5-7.7-48.4 9.8-10.9 23.5-25.7 41.3-43.6 40.3-40.6 47-62.7 39.2-96.9-7.8-34.2-44.6-63.3-77.2-78.5z" fill="#873158"/>
          <path d="M611.05 285.6c-6.66-3.07-14.07-6.08-21.52-8.92 2.44-11.6 4.2-23.33 5.23-35.14 4.43-49.2-3.3-67.42-27.23-85.55-23.93-18.2-64.28-16.8-94.2-8.5-7.52 2-15.68 4.7-23.7 7.5-5-8.6-10.33-17.3-15.54-24.8-17.7-25.6-47.7-52.6-77.6-54.1-30-1.5-47.7 7.5-75.9 48-6.8 9.7-13 19.8-18.6 30.3-7.6-2.6-15.2-5.1-22.2-7-29.9-8.2-70.3-9.7-94.2 8.5-24 18.1-31.7 36.3-27.2 85.5 1 11.8 2.7 23.5 5.2 35.1-7.5 2.8-14.9 5.8-21.5 8.9-28.2 12.9-60 37.8-66.7 67-6.7 29.3-.9 48.2 34.1 83 20 20 37.9 32.5 49.5 39.5-1.4 6.1-2.6 12.6-3.7 19.7-7.5 48.8-.9 67.5 21.9 87 22.7 19.6 63.1 20.44 93.5 14.1 30.3-6.33 71.4-21.4 71.4-21.4h110.8s41 15.1 71.3 21.44c30.3 6.32 70.7 5.33 93.5-14.25 22.7-19.57 29.3-38.2 21.8-87-1.2-7.4-2.5-14.3-3.9-20.67 11.6-7.2 28.7-19.47 47.9-38.5 35-34.9 40.8-53.8 34.1-83.05-6.7-29.26-38.5-54.1-66.7-67.05z" fill="#A83956"/>
          <path d="M555.53 308.96c-3.9-1.76-8.13-3.5-12.45-5.18 1.4-7.2 2.64-15.26 3.52-24.2 4.05-41.32-2.3-56.6-22.2-71.64-19.9-15.05-53.7-13.58-78.8-6.48-4.42 1.25-9.1 2.75-13.82 4.36-3.3-5.6-6.72-11.1-10.06-16-14.67-21.58-39.6-44.42-64.53-45.7-25-1.26-39.6 6.36-63.1 40.63-5.1 7.4-9.3 14.4-12.9 20.8-4.4-1.5-8.8-2.88-12.9-4-25.1-7.1-58.9-8.6-78.8 6.47-19.9 15.06-26.3 30.3-22.2 71.65.8 8.93 2.1 17 3.5 24.2-4.3 1.68-8.6 3.42-12.5 5.17-23.8 10.7-50.6 31.28-56.2 55.6-5.6 24.34-.7 40.1 29 69.17 10.4 10.3 21.7 19.6 33.8 27.9-1.7 5.8-3.2 12-4.6 18.8-8.4 40.7-3.6 56.6 14.6 73.6 18.2 17.1 52 19.3 77.7 14.9 25.7-4.4 60.6-15.6 60.6-15.6H402s53.6 14.4 60.7 15.6c25.7 4.5 59.44 2.3 77.7-14.7 18.22-17 23-32.9 14.6-73.6-1.47-7.2-3.14-13.8-4.9-19.9 11.5-7.9 22.3-16.9 32.27-26.7 29.6-29.1 34.6-44.8 29-69.2-5.6-24.3-32.4-44.9-56.2-55.6z" fill="#C34057"/>
          <path d="M497.6 332.45c-1.1-.5-2.27-1-3.46-1.46.72-4.2 1.36-8.6 1.88-13.3 3.68-33.5-1.28-45.8-17.17-57.8-15.9-12-43.12-10.5-63.4-4.5l-3.93 1.2c-1.53-2.6-3.08-5-4.6-7.3-11.7-17.6-31.56-36.3-51.43-37.4-19.9-1.1-31.6 5.2-50.3 33.2-2.7 3.9-5 7.7-7.1 11.3-1.2-.4-2.4-.8-3.6-1.1-20.3-6-47.5-7.6-63.4 4.4-15.9 12-20.9 24.2-17.2 57.7.5 4.7 1.1 9.1 1.9 13.2-1.2.42-2.4 1-3.5 1.4-19.4 8.42-41.3 24.8-45.7 44.14-4.5 19.4-.4 32 24 55.3 7 6.8 14.6 13.1 22.5 18.8-1.5 4.9-2.9 10.23-4.1 16.1-7 32.94-3.3 45.65 11.3 59.16 14.6 13.5 41.8 14.6 62.6 10.6 20.8-3.9 49.1-13.7 49.1-13.7h47.4s32.4 10.6 49.1 13.7c20.8 4 48 2.87 62.6-10.64 14.6-13.5 18.3-26.2 11.3-59.13-1.4-6.3-2.9-12-4.4-17.18 7.4-5.44 14.4-11.36 21-17.7 24.3-23.2 28.4-35.8 23.9-55.2-4.47-19.4-26.3-35.7-45.7-44.17z" fill="#E14756"/>
          <g transform="translate(134 527)">
            <mask id="e" fill="#fff">
              <use xlink:href="#d"/>
            </mask>
            <path d="M149.34 22.85l16.63-.86 48.8 134s-51.8-62-93.7-110.7c.4-.8.8-1.7 1.27-2.5 6.35-11.8 18.9-17.7 27-20z" fill="#C3C3C3" mask="url(#e)"/>
            <path d="M115 44.65c1.84.33 3.8.8 5.74 1.33l.3-.6c41.93 48.7 93.7 110.65 93.7 110.65s-84.72-33.83-138.5-70.6c2.08-17.78-.82-25 7.53-32.82 8.35-7.8 22.93-9.4 31.23-7.9z" fill="#AAA" mask="url(#e)"/>
            <path d="M55.87 97.54c3-4.9 20.2-10.85 20.35-12.1 53.8 36.77 138.52 70.6 138.52 70.6s-96.9-.96-159.53-39.5c-.5-1.03-2.7-13.55.7-19z" fill="#909090" mask="url(#e)"/>
          </g>
          <g transform="translate(365 527)">
            <mask id="g" fill="#fff">
              <use xlink:href="#f"/>
            </mask>
            <path d="M54.4 24.86l-16.6-.83-48.8 134S40.8 96.1 82.7 47.4c-.44-.83-.8-1.66-1.3-2.54-6.34-11.73-18.9-17.67-27-20z" fill="#C3C3C3" mask="url(#g)"/>
            <path d="M88.75 46.65c-1.84.33-3.8.8-5.74 1.33l-.3-.6C40.8 96.1-11 158.04-11 158.04s84.73-33.83 138.52-70.6c-2.1-17.78.8-25-7.54-32.82-8.35-7.8-22.93-9.4-31.23-7.95z" fill="#AAA" mask="url(#g)"/>
            <path d="M147.88 99.54c-3-4.9-20.2-10.85-20.35-12.1C73.73 124.2-11 158.04-11 158.04s97.56-3.63 160.2-42.18c.58-1.02 2.06-10.84-1.32-16.33z" fill="#909090" mask="url(#g)"/>
          </g>
          <path d="M473.6 388.62c-3-12.73-16.14-23.6-29.55-30.27.12-.83.37-1.64.48-2.5 3.3-25.62-.2-34.93-12.07-43.83-9-6.72-22.9-7.46-35.85-5.32-8.8-12.94-22.7-25.86-36.7-26.62-14.8-.8-23.5 4-37.4 25.8-.8 1.27-1.6 2.52-2.3 3.76-15.6-4.9-36.3-6.48-48.1 2.43-11.8 8.9-15.4 18.16-12.1 43.8.1.84.3 1.65.4 2.48-13.4 6.65-26.8 17.53-29.8 30.27-1.9 8.27-1.6 14.9 2.5 22.33 16.6 44.65 75 181.64 75 181.64 7.6 16.2 25.5 31.8 44.4 31.8 21.8 0 39-19.4 44.4-34.2 0 0 59.2-136.7 75.3-179.6 1.2-2.5 2-5.1 2.4-7.9 1.5-4.5.6-9-.6-14.3z" fill="#F67958"/>
        </g>
      </g>
    </svg>
    <div class="square-wrapper">
      <div class="line"></div>
      <div class="line"></div>
      <div class="line"></div>
      <div class="line"></div>
    </div>
    <div class="sparks">
      <svg class="spark" viewBox="91 -1 94 94" xmlns="http://www.w3.org/2000/svg">
        <path d="M184 92c0-50.8-41.2-92-92-92" stroke="#f0f0f0" fill="none"/>
      </svg>
      <svg class="spark" viewBox="91 -1 94 94" xmlns="http://www.w3.org/2000/svg">
        <path d="M184 92c0-50.8-41.2-92-92-92" stroke="#f0f0f0" fill="none"/>
      </svg>
    </div>
  </div>

  <h1 class="pango-words">
    <span class="pango-word">PANGO</span>
    <div class="line-separator"></div>
    <span class="pango-word">INTERACTIVE</span>
  </h1>

  <div class="bg-lines-wrapper"></div>
</section>
              
            
!

CSS

              
                @import 'nib';
introBg = #1E1E20;

.absolute-center {
  absolute: top 0 right 0 bottom 0 left 0;
  margin: auto;
}

.section {
  position: relative;
  width: 100%;
  min-height: 100vh;
}

.section--intro {
  overflow: hidden;
}

html, body {
  width: 100%;
  min-height: 100%;
  background: #f0f0f0;
  overflow-x: hidden;
}

.wrapper {
  size: 960px 100%;
  margin: auto;
  z-index: 14;
  position: relative;
}

.square-wrapper {
  @extend .absolute-center;
  size: 200px;
  background: #f0f0f0;
}

.line {
  absolute: top 0 left 0;
  width: 100%;
  size: 100% 4px;
  background: introBg;
  &:nth-child(3) {
    top: auto;
    bottom: 0;
  }
  &:nth-child(2), &:nth-child(4) {
    top: 50%;
    left: -50%;
    margin-top: -2px;
    transform: rotate(90deg);
  }
  &:nth-child(2) {
    left: 50%;
  }
}

.square-dark-wrapper {
  @extend .absolute-center;
  size: 0;
  will-change: transform;
  transform: scale(0);
}

.square-dark {
  background: introBg;
  border-radius: 50%;
  transform: translateX(-50%) translateY(-50%);
}

.sparks {
  @extend .absolute-center;
  size: 100px;
}

.spark {
  transform: rotate(45deg);
  size: 100%;
  absolute: top 0 right -200%;
  will-change: stroke-dashoffset;
  stroke-dasharray: 145;
  stroke-dashoffset: -145;
  &:last-child {
    left: -200%;
    right: auto;
    transform: rotate(-135deg);
  }
}

.pango-logo-group {
  @extend .absolute-center;
  margin-top: -5rem;
  z-index: 15;
}

.pango-logo {
  @extend .absolute-center;
  size: 190px;
  z-index: 16;
  opacity: 0;
  transform: scale(.9);
}

.pango-words {
  size: 190px 120px;
  font-family: 'Lato';
  font-size: 3rem;
  font-weight: 300;
  color: #f0f0f0;
  @extend .absolute-center;
  top: auto;
  bottom: 10%;
  overflow: hidden;
  will-change: opacity;

  .line-separator {
    size: 90% 1px;
    background: #f0f0f0;
    will-change: transform;
    margin: .2em auto;
  }
}

.pango-word {
  text-align: center;
  display: block;
  overflow: hidden;
  line-height: 1;
  span {
    will-change: transform;
    display: inline-block;
  }
  &:last-of-type {
    letter-spacing: 0.11em;
    font-size: 1.4rem;
    font-weight: 100;
  }
}

.outer-logo-circle {
  @extend .absolute-center;
  size: 190px;
  z-index: 14;
  transform-origin: 50% 50%;
  transform: rotate(-90deg) scale(.9);
  .circle {
    transform: translateZ(1px);
    stroke: introBg;
    stroke-dasharray: 2072;
    stroke-dashoffset: 2072;
    stroke-width: 16px;
  }
}

.bg-lines-wrapper {
  size: 100%;
  absolute: top 0 left 0;
  z-index: 10;
  will-change: transform;
  transform: perspective(1000px) rotateX(45deg);
  transform-style: preserve-3d;
  .line {
    absolute: top 0 left 0;
    background: rgba(255,255,255,.2);
    size: 2px;
    transform: scaleX(0);
    transform-origin: 0 50%;
  }
}

.mouse-tracker-layer {
  absolute: top 0 left 0;
  size: 100%;
  z-index: 18;
}

.top-nav {
  absolute: top 0 right 0;
  z-index: 19;
}

.nav-list {
  list-style: none;
  padding: 1rem 2rem;
}

.nav-list--item {
  display: inline-block;
  a {
    color: #f0f0f0;
    padding: .4rem;
    margin: 0 .4rem;
    display: block;
    text-transform: uppercase;
    text-decoration: none;
    transition: all .2s ease;
    border: 1px solid transparent;
    &:hover {
      border-color: currentColor;
    }
  }
}
              
            
!

JS

              
                // Replaces the element text with an array of spans
// and returns it
function splitTextInSpans(elem) {
  const letters = elem.textContent.split('')
  elem.innerHTML = ''
  return letters.map(letter => {
    const span = document.createElement('span')
    span.textContent = letter
    elem.appendChild(span)
    return span
  })
}

function intro() {
  function animateLogo(tl) {
    const maxWindowSize = Math.max(window.innerHeight, window.innerWidth)

    const squareDarkWrapper = document.querySelector('.square-dark-wrapper')
    const squareDark = squareDarkWrapper.querySelector('.square-dark')

    const square = document.querySelector('.square-wrapper')
    const lines = square.querySelectorAll('.line')

    const sparks = document.querySelectorAll('.spark')
    const outerCircle = document.querySelector('.outer-logo-circle .circle')
    const logo = document.querySelector('.pango-logo')

    tl.set(squareDark, {
        height: maxWindowSize,
        width: maxWindowSize
      })
      .set(lines, { scaleX: 0 })

    _.forEach(lines, (line, i) => {
      tl.to(lines[i], 2, {
        scaleX: 1,
        ease: 'Expo.easeOut'
      }, i / 10)
    })

    tl.to(lines, .05, {
        opacity: 0
      }, 1)
      .to(squareDarkWrapper, 1.5, {
        scale: 1.4,
        ease: 'Expo.easeOut'
      }, 1)
      .to(square, 2, {
        rotationZ: 45,
        ease: 'Expo.easeOut'
      }, 1.5)
      .to(sparks, 1, {
        strokeDashoffset: 0,
        ease: 'Expo.easeOut'
      }, 1.5)
      .to(sparks, 1, {
        strokeDashoffset: 145,
        ease: 'Expo.easeOut'
      }, 1.5)
      .to(outerCircle, 1.4, {
        strokeDashoffset: 0,
        ease: 'Expo.easeInOut'
      }, 1.7)
      .to(outerCircle, .4, {
        opacity: 0,
        ease: 'Power4.easeOut'
      }, 2.7)
      .to(logo, 1, {
        opacity: 1,
        scale: 1,
        ease: 'Power4.easeOut'
      }, 2.7)

    return tl
  }

  function animateWords(tl) {
    const wordsWrapper  = document.querySelector('.pango-words')
    const words         = wordsWrapper.querySelectorAll('.pango-word')
    const lineSeparator = wordsWrapper.querySelector('.line-separator')

    tl.set(lineSeparator, { scaleX: 0 })
      .to(lineSeparator, 1, {
        scaleX: 1,
        ease: 'Expo.easeOut'
      }, 3)

    _.forEach(words, word => {
      const spans = splitTextInSpans(word)
      _.forEach(spans, (span, j) => {
        let tlWords = new TimelineMax()

        tlWords.set(span, { y: span.clientHeight, opacity: 1 })
        const delay = (3 + ((Math.abs(spans.length / 2 - j)) / 20)).toFixed(2)
        tlWords.to(span, 1.4, {
          y: 0,
          ease: 'Expo.easeOut'
        }, delay)
      })
    })
    return tl
  }

  function animateBackground(tl) {
    const wrapper = document.querySelector('.bg-lines-wrapper')
    const createLines = qty => {
      for (let i = 0; i < qty; i++) {
        const line = document.createElement('div')
        line.classList.add('line')
        wrapper.appendChild(line)
        tl.set(line, {
            x: _.random(window.innerWidth),
            y: _.random(window.innerHeight),
            z: _.random(-200, 200),
            width: _.random(0, 100) + 50,
            scaleX: 0
          })
      }
    }

    function animateLines(lines) {
      for (let line of lines) {
        const startTime = _.random(5, true)
        tl.to(line, .4, {
            scaleX: 1,
            ease: 'Expo.Power4'
          }, startTime)
          .to(line, 2, {
            scaleX: 0,
            x: '+=' + line.style.width,
            ease: 'Power4.easeOut'
          }, startTime + .4)
      }

      // 3d rotation
      const rotate = (rx, ry) => {
        TweenMax.to(wrapper, .75, {
            rotationX: ry,
            rotationY: rx,
            ease: 'Power0.easenone'
          })
      }

      // update rotation values
      function update(elem, event, tilt) {
        if (tilt) {
          const tiltLR = event.gamma
          const tiltFB = event.beta
          rotate(tiltLR / 1.5, tiltFB / 1.5)

          return
        }

        const xpos = event.layerX || event.offsetX
        const ypos = event.layerY || event.offsetY

        const ax = -(window.innerWidth / 2 - xpos) / 40
        const ay = (window.innerHeight / 2 - ypos) / 10
        rotate(ax, ay)
      }

      // get element for mousemove event tracking
      // on top of all other layers
      const trackerLayer = document.querySelector('.mouse-tracker-layer')
      trackerLayer.addEventListener('mousemove', e => window.requestAnimationFrame(() => update(wrapper, e)))

      if (window.DeviceOrientationEvent) {
        window.addEventListener('deviceorientation', e =>
          window.requestAnimationFrame(() => update(wrapper, e, true)))
      }
    }

    createLines(50)
    animateLines(wrapper.querySelectorAll('.line'))
  }

  return {
    animateLogo,
    animateWords,
    animateBackground
  }
}

/*intro().animateBackground(new TimelineMax({
  delay: 2.8,
  repeat: -1,
  repeatDelay: 0
}))*/
intro().animateLogo(new TimelineMax())
intro().animateWords(new TimelineMax())

              
            
!
999px

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