:root {
  --ink: #101828;
  --muted: #475467;
  --paper: #fbfbfb;
  --white: #ffffff;
  --coral: #e85f4f;
  --line: rgba(16, 24, 40, 0.12);
  --lcd: #e85f4f;
  --lcd-light: #ffd8d2;
  --lcd-dark: #32110d;
  --font: Inter, "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --radius: 20px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 99;
  padding: 0.7rem 0.9rem;
  color: var(--white);
  background: var(--ink);
  border-radius: 999px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.footer-inner,
.section-inner,
.hero-inner {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0.9rem 0;
  background: rgba(251, 251, 251, 0.9);
  backdrop-filter: blur(16px);
}

.brand,
.footer-mark {
  display: block;
  width: clamp(138px, 16vw, 174px);
}

.brand {
  width: clamp(34px, 4vw, 48px);
}

.brand img,
.footer-mark img {
  width: 100%;
}

.site-nav,
.site-footer nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
}

.site-nav a,
.site-footer a {
  color: var(--ink);
  font-size: clamp(0.9rem, 1.45vw, 1.2rem);
  font-weight: 650;
  line-height: 1.2;
}

.site-nav a:hover,
.site-footer a:hover {
  color: var(--coral);
}

.hero {
  position: relative;
  min-height: 1124px;
  padding: 44px 0 46px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  min-height: 1000px;
}

.hero-copy {
  position: relative;
  z-index: 3;
  max-width: 1180px;
  padding-top: clamp(2rem, 5.4vw, 4.9rem);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 1180px;
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(3.1rem, 5.75vw, 4.5rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h1 span {
  display: block;
}

h2 {
  max-width: 800px;
  margin-bottom: 1.5rem;
  color: var(--ink);
  font-size: clamp(2.1rem, 4.4vw, 4.1rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.06;
}

h3 {
  margin-bottom: 0.7rem;
  color: var(--ink);
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.08;
}

p {
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 1.6;
}

.hero-game-stage {
  position: absolute;
  left: 0;
  right: 0;
  top: 282px;
  min-height: 718px;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--lcd);
  box-shadow:
    inset 0 0 0 1px rgba(50, 17, 13, 0.2),
    inset 0 28px 70px rgba(255, 255, 255, 0.1),
    inset 0 -42px 76px rgba(50, 17, 13, 0.12),
    0 24px 70px rgba(16, 24, 40, 0.1);
  touch-action: none;
}

.hero-game-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), transparent 36%),
    linear-gradient(325deg, rgba(50, 17, 13, 0.12), transparent 42%),
    repeating-linear-gradient(60deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(120deg, rgba(50, 17, 13, 0.11) 0 1px, transparent 1px 34px),
    radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.18), transparent 24%),
    radial-gradient(circle at 82% 76%, rgba(50, 17, 13, 0.16), transparent 32%);
  mix-blend-mode: soft-light;
  opacity: 0.86;
}

.hero-game-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(50, 17, 13, 0.045) 1px, transparent 1px);
  background-size: 100% 5px, 44px 100%;
  opacity: 0.44;
}

.hero-snake-canvas,
.hero-snake-ghost {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.hero-snake-canvas {
  z-index: 2;
}

.hero-snake-ghost {
  z-index: 5;
  pointer-events: none;
  mix-blend-mode: multiply;
}

.hero-portrait {
  position: absolute;
  left: clamp(-0.4rem, 2.6vw, 2rem);
  bottom: 0;
  z-index: 4;
  width: auto;
  height: min(690px, calc(100% - 28px));
  max-width: min(620px, 51vw);
  object-fit: contain;
  object-position: bottom center;
  filter: drop-shadow(0 24px 40px rgba(16, 24, 40, 0.22));
  pointer-events: none;
}

.hero-hud {
  position: absolute;
  right: clamp(1rem, 2.4vw, 1.6rem);
  top: clamp(1rem, 2.4vw, 1.5rem);
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.hero-score {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 42px;
  padding: 0.58rem 0.8rem;
  color: var(--lcd-dark);
  background: rgba(255, 216, 210, 0.58);
  border: 1px solid rgba(50, 17, 13, 0.18);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: clamp(0.78rem, 1.2vw, 0.96rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.hero-score strong {
  min-width: 2ch;
  color: var(--lcd-dark);
  font: inherit;
  text-align: right;
}

.hero-start {
  min-width: 118px;
  min-height: 48px;
  padding: 0.74rem 1.1rem;
  color: var(--lcd-light);
  background: var(--lcd-dark);
  border: 1px solid rgba(50, 17, 13, 0.62);
  border-radius: 999px;
  box-shadow: 0 12px 26px rgba(50, 17, 13, 0.16);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: opacity 160ms var(--ease), transform 160ms var(--ease), background 160ms var(--ease);
}

.hero-start:hover {
  color: var(--lcd-dark);
  background: rgba(255, 255, 255, 0.62);
  transform: translateY(-1px);
}

.hero-game-stage.is-running .hero-start {
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
}

.hero-high-scores {
  position: relative;
  z-index: 3;
  width: min(1200px, calc(100% - 2rem));
  min-height: 34px;
  overflow: hidden;
  display: flex;
  align-items: center;
  margin: 0 auto;
  color: rgba(16, 24, 40, 0.58);
  background: rgba(251, 251, 251, 0.58);
  border-top: 1px solid rgba(16, 24, 40, 0.08);
  border-bottom: 1px solid rgba(16, 24, 40, 0.08);
  backdrop-filter: blur(12px);
  mask-image: linear-gradient(90deg, transparent 0, #000 7%, #000 93%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 7%, #000 93%, transparent 100%);
  pointer-events: none;
}

.hero-high-score-track {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3.2vw, 2.7rem);
  width: max-content;
  padding: 0.58rem 0;
  white-space: nowrap;
  animation: high-score-scroll 42s linear infinite;
}

.hero-high-score-track span {
  font-family: var(--mono);
  font-size: clamp(0.62rem, 0.94vw, 0.76rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.hero-high-score-track span:nth-child(7n + 1) {
  color: rgba(232, 95, 79, 0.82);
}

@keyframes high-score-scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

.about {
  padding: 130px 0 80px;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.65fr) minmax(360px, 0.72fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

.kicker {
  margin-bottom: 0.8rem;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.about-copy {
  max-width: 680px;
}

.about-copy p {
  margin-bottom: 1.15rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 1.1rem;
  padding: 0.78rem 1rem;
  color: var(--white);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-weight: 650;
  letter-spacing: 0.03em;
  transition: transform 180ms var(--ease), background 180ms var(--ease);
}

.button:hover {
  background: var(--coral);
  transform: translateY(-2px);
}

.contact-page {
  min-height: calc(100svh - 122px);
  padding: clamp(5.5rem, 8.5vw, 8.4rem) 0 clamp(5rem, 8vw, 7rem);
  background: var(--paper);
}

.contact-page .section-inner {
  width: min(1200px, calc(100% - 2rem));
}

.contact-page h1 {
  max-width: 1120px;
  margin-bottom: clamp(2.6rem, 6vw, 5rem);
  font-size: clamp(4.2rem, 8vw, 7.1rem);
  line-height: 0.98;
}

.contact-intro {
  max-width: 1120px;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.contact-intro p {
  max-width: 1120px;
  margin-bottom: 1.2rem;
  color: #344054;
  font-size: clamp(1.14rem, 1.65vw, 1.45rem);
  line-height: 1.52;
}

.contact-intro a {
  display: inline-flex;
  align-items: flex-start;
  margin-top: 0.65rem;
  color: var(--ink);
  border-bottom: 2px solid rgba(16, 24, 40, 0.12);
  font-size: clamp(1.1rem, 1.7vw, 1.45rem);
  font-weight: 650;
  line-height: 1.25;
}

.contact-intro a::before {
  content: "→";
  flex: 0 0 auto;
  margin-right: 0.12rem;
}

.contact-form {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.1rem);
  width: 100%;
}

.contact-form label {
  display: grid;
  gap: 0.65rem;
}

.contact-form span {
  color: #344054;
  font-size: clamp(1.14rem, 1.55vw, 1.36rem);
  font-weight: 750;
  line-height: 1.2;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  min-height: 60px;
  padding: 0.8rem 0.9rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(16, 24, 40, 0.22);
  border-radius: 0;
  box-shadow: inset 0 1px 0 rgba(16, 24, 40, 0.04);
  font-size: 1.05rem;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-submit {
  justify-self: start;
  min-height: 58px;
  padding: 0.78rem 1.1rem;
  color: var(--white);
  background: var(--coral);
  border: 1px solid var(--coral);
  border-radius: 0;
  cursor: pointer;
  font-size: clamp(1.1rem, 1.55vw, 1.35rem);
  font-weight: 650;
  line-height: 1;
  transition: background 180ms var(--ease), transform 180ms var(--ease);
}

.contact-submit:hover {
  background: var(--ink);
  border-color: var(--ink);
  transform: translateY(-1px);
}

.results {
  padding: 100px 0 120px;
  background: var(--paper);
}

.results-page {
  min-height: calc(100svh - 122px);
  padding-top: clamp(5rem, 10vw, 8rem);
}

.results-page h1 {
  max-width: 920px;
  margin-bottom: 2.4rem;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 2.2rem;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.result-grid article {
  min-height: 260px;
  display: grid;
  align-content: end;
  padding: clamp(1rem, 2.2vw, 1.4rem);
  background: var(--white);
}

.result-grid span {
  margin-bottom: auto;
  color: var(--coral);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.result-grid p {
  margin-bottom: 0;
  font-size: 1rem;
}

.site-footer {
  padding: 15px 0;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
}

.site-footer a {
  color: var(--muted);
  font-weight: 450;
}

@media (max-width: 1080px) {
  .hero {
    min-height: auto;
    padding-bottom: 32px;
  }

  .hero-inner {
    min-height: auto;
    display: grid;
    gap: 2rem;
  }

  .hero-game-stage {
    position: relative;
    top: auto;
    min-height: 760px;
    margin-top: 0.2rem;
  }

  .hero-portrait {
    left: clamp(-2rem, -4vw, -0.6rem);
    height: min(575px, 76%);
    max-width: min(520px, 64vw);
  }

  .hero-high-scores {
    margin-top: 0.8rem;
  }

  .about-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header,
  .footer-inner,
  .section-inner,
  .hero-inner {
    width: min(100% - 1.5rem, 1200px);
  }

  .site-header {
    min-height: 68px;
  }

  .brand {
    width: 36px;
  }

  .footer-mark {
    width: 142px;
  }

  .site-nav {
    gap: 1rem;
  }

  .site-nav a {
    font-size: 0.84rem;
  }

  .site-nav a:nth-child(1) {
    display: none;
  }

  h1 {
    font-size: clamp(2.45rem, 12.6vw, 4rem);
    line-height: 1.05;
  }

  h2 {
    font-size: clamp(2rem, 9.5vw, 3.1rem);
  }

  p {
    font-size: 1rem;
  }

  .hero-copy {
    padding-top: 2rem;
  }

  .hero-game-stage {
    min-height: 690px;
    border-radius: 16px;
    margin-top: 0;
  }

  .hero-portrait {
    left: clamp(-5.5rem, -18vw, -2rem);
    height: min(490px, 71%);
    max-width: 86vw;
  }

  .hero-score {
    min-height: 36px;
    padding: 0.5rem 0.66rem;
    font-size: 0.7rem;
  }

  .hero-start {
    min-width: 86px;
    min-height: 36px;
    padding: 0.58rem 0.7rem;
    font-size: 0.72rem;
  }

  .about {
    padding: 78px 0 60px;
  }

  .contact-page {
    padding: 4.4rem 0 5rem;
  }

  .contact-page h1 {
    margin-bottom: 2.4rem;
    font-size: clamp(3.2rem, 17vw, 4.8rem);
  }

  .contact-form input,
  .contact-form textarea {
    min-height: 54px;
  }

  .results {
    padding: 72px 0 90px;
  }

  .result-grid article {
    min-height: 210px;
  }

  .site-footer nav {
    gap: 1rem;
  }
}