:root {
  --bg: #0c0c0c;
  --panel: #525252;
  --panel-border: #696969;
  --text: #989898;
  --muted: #7c7c7c;
  --line: #3a3a3a;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", sans-serif;
}

a {
  color: var(--muted);
  text-decoration: none;
  transition:
    color 0.2s ease,
    opacity 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

a:hover,
a:focus-visible {
  color: #ffffff;
}

.page {
  width: min(100%, 430px);
  margin: 0 auto;
  padding: 42px 22px 36px;
}

.hero {
  padding-top: 18px;
}

.hero__logo-link {
  display: block;
  width: fit-content;
  margin: 0 auto;
  pointer-events: none;
  cursor: default;
}

.hero__logo-link.is-ready {
  pointer-events: auto;
  cursor: pointer;
}

.hero__logo-wrap {
  position: relative;
  width: 120px;
  max-width: 45vw;
  margin: 0 auto 40px;
  transition: opacity 0.2s ease;
  container-type: inline-size;
}

.hero__logo {
  display: block;
  width: 100%;
  height: auto;
}

.hero__logo--animated {
  overflow: visible;
  color: #ffffff;
  animation: logo-tone-settle 7s linear forwards;
  transition: color 0.2s ease;
}

.logo-cup,
.logo-base,
.logo-pencil,
.logo-pencil-cap,
.logo-drop,
.logo-steam,
.logo-splash__dot {
  fill: currentColor;
}

.logo-pencil,
.logo-pencil-cap {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center center;
  animation: pencil-sequence 7s cubic-bezier(0.2, 0.9, 0.25, 1) forwards;
}

.logo-cup,
.logo-base {
  opacity: 1;
}

.logo-drop {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center top;
  animation: drop-sequence 7s ease-in-out forwards;
}

.logo-splash {
  opacity: 0;
  animation: splash-burst 7s ease-out forwards;
}

.logo-splash__dot {
  transform-box: fill-box;
  transform-origin: center center;
}

.dot-1 {
  animation: splash-dot-1 7s ease-out forwards;
}

.dot-2 {
  animation: splash-dot-2 7s ease-out forwards;
}

.dot-3 {
  animation: splash-dot-3 7s ease-out forwards;
}

.dot-4 {
  animation: splash-dot-4 7s ease-out forwards;
}

.dot-5 {
  animation: splash-dot-5 7s ease-out forwards;
}

.logo-steam {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center bottom;
}

.steam-1 {
  animation: steam-sequence-right 7s ease-out forwards;
}

.steam-2 {
  animation: steam-sequence-center 7s ease-out forwards;
}

.steam-3 {
  animation: steam-sequence-left 7s ease-out forwards;
}

.hero__logo-wordmark {
  position: relative;
  left: 40.6%;
  width: 126%;
  margin: -4px 0 0;
  color: #ffffff;
  font-size: clamp(1.18rem, 19.5cqw, 1.72rem);
  font-weight: 800;
  letter-spacing: 0.005em;
  text-align: center;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-50%) translateY(8px);
  animation: wordmark-in 7s ease forwards;
  transition: color 0.2s ease;
}

.hero__logo-link.is-ready.is-complete .hero__logo--animated,
.hero__logo-link.is-ready.is-complete .hero__logo-wordmark {
  animation: none;
  color: var(--text);
  opacity: 1;
}

.hero__logo-link.is-ready.is-complete .hero__logo-wordmark {
  transform: translateX(-50%) translateY(0);
}

.hero__logo-link.is-ready.is-complete:hover .hero__logo--animated,
.hero__logo-link.is-ready.is-complete:focus-visible .hero__logo--animated,
.hero__logo-link.is-ready.is-complete:hover .hero__logo-wordmark,
.hero__logo-link.is-ready.is-complete:focus-visible .hero__logo-wordmark {
  color: #ffffff;
}

.hero__logo-wordmark-tight {
  letter-spacing: -0.03em;
}

.divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.caption {
  padding: 34px 0;
}

.caption p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  font-weight: 500;
  color: #959595;
}

.content-section {
  margin-top: 34px;
}

.section-title {
  margin: 0 0 14px;
  font-size: 1.17rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.card {
  background: rgba(44, 44, 44, 0.94);
  border: 0;
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(4px);
}

.activity-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.activity-list li {
  margin-bottom: 16px;
  color: #959595;
  font-size: 0.98rem;
  line-height: 1.55;
}

.activity-date {
  font-size: 0.84em;
  margin-left: 8px;
}

.activity-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.2rem;
  padding: 0 0.55rem;
  border-radius: 999px;
  background: var(--text);
  color: #121212;
  font-size: 0.64em;
  font-weight: 700;
  letter-spacing: 0.01em;
  vertical-align: middle;
}

.activity-body {
  display: block;
  margin-top: 0.45rem;
  margin-left: 0.9rem;
}

.activity-list li:last-child {
  margin-bottom: 0;
}

.link-card,
.contact-card {
  display: grid;
  gap: 18px;
}

.link-card--plain,
.contact-card--plain {
  padding: 0;
}

.link-card a,
.contact-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid #6f6f6f;
  border-radius: 7px;
  background: #858585;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.09);
  font-size: 0.86rem;
  font-weight: 500;
  color: #272727;
  text-align: center;
}

.link-card a:hover,
.link-card a:focus-visible,
.contact-card a:hover,
.contact-card a:focus-visible {
  background: #a6a6a6;
  border-color: #8b8b8b;
  color: #111111;
  transform: translateY(-1px);
}

.footer {
  padding: 34px 0 10px;
}

.footer p {
  margin: 0;
  color: #737373;
  font-size: 0.88rem;
  text-align: right;
}

.js-enabled .card.is-visible,
.js-enabled .hero.is-visible {
  animation: rise-in 0.7s ease forwards;
}

.js-enabled .hero,
.js-enabled .card {
  opacity: 0;
  transform: translateY(14px);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pencil-sequence {
  0%,
  10% {
    opacity: 0;
    transform: translateY(0);
  }

  20%,
  42% {
    opacity: 1;
    transform: translateY(0);
  }

  46.1% {
    opacity: 0;
    transform: translateY(0);
  }

  46.6%,
  82% {
    opacity: 0;
    transform: translateY(0);
    animation-timing-function: ease-in-out;
  }

  90%,
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drop-sequence {
  0%,
  20% {
    opacity: 0;
    transform: translateY(-22px) scale(0.6);
  }

  24% {
    opacity: 1;
    transform: translateY(-8px) scale(0.82);
  }

  35% {
    opacity: 1;
    transform: translateY(34px) scale(1);
  }

  38% {
    opacity: 1;
    transform: translateY(46px) scale(1.02);
  }

  43%,
  77% {
    opacity: 0;
    transform: translateY(50px) scale(1.02);
  }

  82% {
    opacity: 0;
    transform: translateY(0) scale(1);
    animation-timing-function: ease-in-out;
  }

  90%,
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes steam-sequence-left {
  0%,
  48% {
    opacity: 0;
    transform: translateY(18px) scale(0.82);
  }

  53% {
    opacity: 0.92;
    transform: translateY(4px) scale(0.92);
  }

  63% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  67% {
    opacity: 1;
    transform: translateY(-4px) scale(1.02);
  }

  71% {
    opacity: 1;
    transform: translateY(-4px) scale(1.02);
  }

  86%,
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes steam-sequence-center {
  0%,
  51% {
    opacity: 0;
    transform: translateY(18px) scale(0.82);
  }

  56% {
    opacity: 0.92;
    transform: translateY(4px) scale(0.92);
  }

  67% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  71% {
    opacity: 1;
    transform: translateY(-4px) scale(1.02);
  }

  71% {
    opacity: 1;
    transform: translateY(-4px) scale(1.02);
  }

  86%,
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes steam-sequence-right {
  0%,
  54% {
    opacity: 0;
    transform: translateY(18px) scale(0.82);
  }

  59% {
    opacity: 0.92;
    transform: translateY(4px) scale(0.92);
  }

  71% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  75% {
    opacity: 1;
    transform: translateY(-4px) scale(1.02);
  }

  86%,
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes wordmark-in {
  0%,
  82% {
    opacity: 0;
    transform: translateX(-50%) translateY(0);
    color: #ffffff;
    animation-timing-function: ease-in-out;
  }

  90%,
  100% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    color: var(--text);
  }
}

@keyframes logo-tone-settle {
  0%,
  82% {
    color: #ffffff;
  }

  90%,
  100% {
    color: var(--text);
  }
}

@keyframes splash-burst {
  0%,
  38% {
    opacity: 0;
  }

  41% {
    opacity: 1;
  }

  48%,
  100% {
    opacity: 0;
  }
}

@keyframes splash-dot-1 {
  0%,
  38% {
    opacity: 0;
    transform: translate(0, 0) scale(0.25);
  }

  41% {
    opacity: 1;
    transform: translate(-4px, -2px) scale(1);
  }

  48%,
  100% {
    opacity: 0;
    transform: translate(-20px, -10px) scale(0.15);
  }
}

@keyframes splash-dot-2 {
  0%,
  38% {
    opacity: 0;
    transform: translate(0, 0) scale(0.25);
  }

  41% {
    opacity: 1;
    transform: translate(2px, -4px) scale(1);
  }

  48%,
  100% {
    opacity: 0;
    transform: translate(14px, -14px) scale(0.15);
  }
}

@media (min-width: 744px) {
  .page {
    width: min(100%, 520px);
    padding: 54px 28px 42px;
  }

  .hero__logo-wrap {
    width: 136px;
    margin-bottom: 46px;
  }

  .section-title {
    font-size: 1.22rem;
  }

  .card {
    padding: 20px 22px;
  }
}

@media (min-width: 1024px) {
  .page {
    width: min(100%, 560px);
    padding: 62px 32px 48px;
  }

  .hero {
    padding-top: 26px;
  }

  .hero__logo-wrap {
    width: 144px;
    margin-bottom: 52px;
  }

  .caption {
    padding: 38px 0;
  }

  .content-section {
    margin-top: 40px;
  }

  .card {
    padding: 22px 24px;
  }
}

@keyframes splash-dot-3 {
  0%,
  38% {
    opacity: 0;
    transform: translate(0, 0) scale(0.25);
  }

  41% {
    opacity: 1;
    transform: translate(4px, -1px) scale(1);
  }

  48%,
  100% {
    opacity: 0;
    transform: translate(22px, -7px) scale(0.15);
  }
}

@keyframes splash-dot-4 {
  0%,
  38% {
    opacity: 0;
    transform: translate(0, 0) scale(0.2);
  }

  42% {
    opacity: 0.9;
    transform: translate(-2px, -3px) scale(0.9);
  }

  48%,
  100% {
    opacity: 0;
    transform: translate(-12px, -14px) scale(0.1);
  }
}

@keyframes splash-dot-5 {
  0%,
  38% {
    opacity: 0;
    transform: translate(0, 0) scale(0.2);
  }

  42% {
    opacity: 0.9;
    transform: translate(2px, -2px) scale(0.9);
  }

  48%,
  100% {
    opacity: 0;
    transform: translate(12px, -12px) scale(0.1);
  }
}

@media (max-width: 380px) {
  .page {
    padding: 34px 20px 28px;
  }

  .section-title {
    font-size: 1.05rem;
  }

  .card {
    padding: 16px 18px;
  }
}