:root {
  --bg: #f4f2ff;
  --paper: #ffffff;
  --text: #504f52;
  --heading: #252525;
  --muted: #9c9c9c;
  --line: #eeeeee;
  --width: 1100px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.75 "Open Sans", "Helvetica Neue", Arial, sans-serif;
}

img { max-width: 100%; height: auto; display: block; }

.wrap {
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding: 0 15px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 12px rgba(37, 37, 37, .05);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 104px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo { display: block; line-height: 0; }

.logo img {
  width: 225px;
  height: auto;
  transition: opacity .25s ease;
}

.logo:hover img { opacity: .75; }

/* ---------- slider ---------- */

.slider {
  position: relative;
  margin: 0 -15px;
  background: #111;
  overflow: hidden;
}

.slider__track {
  position: relative;
  width: 100%;
  aspect-ratio: 11 / 5;
  max-height: 500px;
  overflow: hidden;
  perspective: 1400px;
}

.slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity .9s ease-in-out;
  pointer-events: none;
  backface-visibility: hidden;
}

.slide.is-active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
}

.slide.is-leaving {
  opacity: 0;
  z-index: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform, opacity, filter;
  transition: none !important;
}

/* Эффект запускается при появлении (.is-play) и продолжает играть, пока слайд
   уходит (.is-leaving). Снимаем класс только после затухания, поэтому картинка
   не прыгает в стартовую позицию. */

.slide.is-play img {
  animation-duration: 1.5s;
  animation-timing-function: cubic-bezier(.25, .46, .45, .94);
  animation-fill-mode: both;
}

.slide.is-play.fx-zoom img  { animation-name: fxZoom; animation-duration: 16s; animation-timing-function: linear; }
.slide.is-play.fx-right img { animation-name: fxRight; }
.slide.is-play.fx-left img  { animation-name: fxLeft; }
.slide.is-play.fx-up img    { animation-name: fxUp; }
.slide.is-play.fx-down img  { animation-name: fxDown; }
.slide.is-play.fx-flip img  { animation-name: fxFlip; animation-duration: 1.5s; }
.slide.is-play.fx-blur img  { animation-name: fxBlur; animation-duration: 1.8s; }
.slide.is-play.fx-iris img  { animation-name: fxIris; animation-duration: 1.6s; }

@keyframes fxZoom {
  from { transform: scale(1); }
  to   { transform: scale(1.15); }
}

@keyframes fxRight {
  from { transform: translate3d(100%, 0, 0); }
  to   { transform: translate3d(0, 0, 0); }
}

@keyframes fxLeft {
  from { transform: translate3d(-100%, 0, 0); }
  to   { transform: translate3d(0, 0, 0); }
}

@keyframes fxUp {
  from { transform: translate3d(0, 100%, 0); }
  to   { transform: translate3d(0, 0, 0); }
}

@keyframes fxDown {
  from { transform: translate3d(0, -100%, 0); }
  to   { transform: translate3d(0, 0, 0); }
}

@keyframes fxFlip {
  from { transform: perspective(1400px) rotateY(-45deg) scale(0.85); opacity: 0; }
  to   { transform: perspective(1400px) rotateY(0deg) scale(1); opacity: 1; }
}

@keyframes fxBlur {
  from { filter: blur(30px); opacity: 0; transform: scale(1.1); }
  to   { filter: blur(0); opacity: 1; transform: scale(1); }
}

@keyframes fxIris {
  from { clip-path: circle(0% at 50% 50%); }
  to   { clip-path: circle(100% at 50% 50%); }
}

@keyframes fxFlip {
  from { transform: perspective(1400px) rotateY(-32deg) scale(1.08); opacity: .35; }
  to   { transform: perspective(1400px) rotateY(0deg) scale(1); opacity: 1; }
}

@keyframes fxBlur {
  from { filter: blur(18px); transform: scale(1.12); }
  to   { filter: blur(0); transform: scale(1); }
}

@keyframes fxIris {
  from { clip-path: circle(12% at 50% 52%); transform: scale(1.14); }
  to   { clip-path: circle(100% at 50% 52%); transform: scale(1); }
}

.slide__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 22px;
  padding: 0 24px;
  margin: 0;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 55px;
  line-height: 1.15;
  text-align: center;
  text-transform: uppercase;
  text-shadow: 0 2px 14px rgba(0, 0, 0, .75), 0 0 40px rgba(0, 0, 0, .45);
  opacity: 0;
  transform: translateY(18px);
}

.slide.is-active .slide__caption {
  animation: fxCaption .7s .15s ease-out both;
}

@keyframes fxCaption {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.slider__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .72);
  color: #252525;
  font: 400 32px/1 Georgia, serif;
  cursor: pointer;
  opacity: 0;
  transition: opacity .25s ease, background .25s ease;
}

.slider:hover .slider__arrow,
.slider__arrow:focus-visible { opacity: 1; }

.slider__arrow:hover { background: #fff; }

.slider__arrow--prev { left: 16px; }
.slider__arrow--next { right: 16px; }

.slider__dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.slider__dots button {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .5);
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}

.slider__dots button.is-active {
  background: #fff;
  transform: scale(1.25);
}

/* ---------- article ---------- */

.post {
  background: var(--paper);
  padding: 46px 40px 30px;
  margin: 0 -15px 0;
  text-align: center;
}

.post h1 {
  margin: 0 0 22px;
  color: var(--heading);
  font-size: 34px;
  line-height: 1.3;
  font-weight: 600;
}

.post p {
  max-width: 720px;
  margin: 0 auto 18px;
}

.post__date {
  margin-top: 26px !important;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- footer ---------- */

.site-footer {
  padding: 34px 0 46px;
  text-align: center;
}

.site-footer .wrap {
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ---------- animated letters ---------- */

.letter {
  display: inline-block;
  opacity: 0;
  transform: scale(.25);
  transition: transform .45s cubic-bezier(.2, .8, .3, 1.25), opacity .3s ease;
}

.letter.is-in {
  opacity: 1;
  transform: none;
}

.letter--space {
  width: .32em;
}

/* ---------- preloader ---------- */

.preloader {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: var(--bg);
  place-items: center;
  transition: opacity .5s ease, visibility .5s;
}

html.js .preloader { display: grid; }

.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader__text {
  color: var(--heading);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 42px;
  letter-spacing: 4px;
  text-transform: uppercase;
  user-select: none;
}

@media (max-width: 640px) {
  .preloader__text { font-size: 26px; letter-spacing: 2px; }
}

/* ---------- small screens ---------- */

@media (max-width: 900px) {
  .slide__caption { font-size: 38px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .site-header .wrap { min-height: 82px; }
  .logo img { width: 170px; }

  .slide__caption {
    bottom: 14px;
    font-size: 24px;
    padding: 0 14px;
  }

  .slider__arrow { display: none; }
  .slider__dots { bottom: 4px; }

  .post { padding: 32px 20px 22px; }
  .post h1 { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .slide.is-play img,
  .slide__caption { animation: none !important; transition: none; }
  .slide { transition: opacity .2s linear; }
  .slide__caption { opacity: 1; transform: none; }
  .letter { opacity: 1; transform: none; transition: none; }
  .preloader { display: none !important; }
}