:root {
  --bg: #ffffff;
  --surface: #f0f7fb;
  --text: #1c2430;
  --muted: #5c6b7a;
  --accent: #5eb8e8;
  --accent-deep: #3a9fd4;
  --accent-soft: rgba(94, 184, 232, 0.18);
  --border: rgba(94, 184, 232, 0.22);
  --radius: 12px;
  --font: system-ui, "Segoe UI", Roboto, Ubuntu, sans-serif;
  --font-pixel: "Press Start 2P", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: #000;
  font-size: 18px;
  line-height: 1.7;
  position: relative;
  overflow-x: hidden;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5rem) clamp(1.5rem, 5vw, 2.5rem);
  position: relative;
  z-index: 2;
}

.star-field {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.pixel-star {
  position: absolute;
  width: var(--star-size, 36px);
  height: var(--star-size, 36px);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cpath d='M32 4 39 24 60 24 43 37 49 58 32 46 15 58 21 37 4 24 25 24Z' fill='none' stroke='%23000' stroke-width='4' stroke-linejoin='miter' shape-rendering='crispEdges'/%3E%3C/svg%3E");
}

.star-sm {
  --star-size: 24px;
}

.star-md {
  --star-size: 36px;
}

.star-lg {
  --star-size: 52px;
}

.s1 { top: 4%; left: 3%; }
.s2 { top: 10%; right: 6%; }
.s3 { top: 23%; left: 8%; }
.s4 { top: 28%; right: 12%; }
.s5 { top: 45%; left: 2%; }
.s6 { top: 52%; right: 4%; }
.s7 { top: 66%; left: 10%; }
.s8 { top: 74%; right: 8%; }
.s9 { top: 86%; left: 6%; }
.s10 { top: 90%; right: 3%; }

@media (max-width: 900px) {
  .pixel-star {
    opacity: 0.85;
  }
  .s3,
  .s5,
  .s7,
  .s9 {
    display: none;
  }
}

header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-family: var(--font-pixel);
  font-size: clamp(1.35rem, 7vw, 2.35rem);
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0.08em;
  margin: 0 0 1rem;
  color: #000;
  text-align: center;
  text-shadow: 2px 2px 0 var(--accent-soft);
}

.tagline {
  font-family: "Montserrat", var(--font);
  color: var(--accent-deep);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  text-align: center;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  font-size: clamp(0.9rem, 2.4vw, 1.1rem);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 1rem;
  font-weight: 600;
}

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

.project-list li {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.6rem 1.85rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.project-list li:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent-soft);
}

.project-list a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.project-list a:hover {
  color: var(--accent-deep);
}

.project-list .desc {
  display: block;
  font-size: 1rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: #000;
}

footer a {
  color: var(--accent-deep);
}

footer code {
  background: var(--accent-soft);
  color: #000;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.85em;
}

.tabs {
  margin-top: 1.5rem;
}

.tablist {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.tablist li {
  margin: 0;
}

.tablist button {
  margin: 0;
  background: #fff;
  color: #000;
  border: 2px solid #000;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 500;
  padding: 0.7rem 1.05rem;
  cursor: pointer;
  line-height: 1.2;
  transition: transform 0.12s ease, background 0.2s ease;
  position: relative;
}

.tablist button:hover {
  background: #f5f5f5;
}

.tablist button:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 2px;
}

.tablist button[aria-selected="true"] {
  font-weight: 700;
  background: #fff;
  transform: scale(1.07);
  z-index: 1;
}

.tab-panel {
  display: none;
  background: #fff;
  color: #000;
  border: 2px solid #000;
  padding: 2.6rem 3rem;
  min-height: 20rem;
}

.tab-panel.is-active {
  display: block;
}

.tab-panel h2 {
  font-family: var(--font-pixel);
  color: #000;
  font-size: clamp(0.9rem, 2.2vw, 1.2rem);
  text-transform: none;
  letter-spacing: 0.08em;
  line-height: 1.5;
  margin-bottom: 1.75rem;
}

.tab-panel .project-list li {
  background: #fff;
  border: 2px solid #000;
  border-radius: 0;
  padding: 1.9rem 2rem;
}

.tab-panel .project-list li:hover {
  border-color: #000;
  background: #fafafa;
  box-shadow: none;
}

.tab-panel .project-list a:hover {
  color: var(--accent-deep);
}

.tab-panel .project-list a {
  font-size: 1.18rem;
}

.tab-panel .project-list .desc {
  font-size: 1.05rem;
  margin-top: 0.55rem;
}

.project-embed {
  margin-top: 0.9rem;
  width: 100%;
  height: clamp(420px, 70vh, 900px);
  min-height: 420px;
  border: 2px solid #000;
  background: #fff;
  display: block;
  max-width: 100%;
  min-width: 100%;
  overflow: auto;
  box-sizing: border-box;
}

.mini-game-frame {
  margin: 0.25rem 0 0 0;
  width: min(520px, 100%);
  height: min(520px, 65vh);
  min-width: 240px;
  min-height: 240px;
  max-width: 100%;
  max-height: 720px;
  border: 2px solid #000;
  background: #fff;
  resize: both;
  overflow: auto;
  /* Keep a tiny buffer so browser resize handle isn't occluded by iframe. */
  padding: 2px;
  box-sizing: border-box;
}

.mini-game-embed {
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
  display: block;
}

.tab-panel .lead {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.22rem;
  line-height: 1.75;
  max-width: 52ch;
}

.about-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  align-items: flex-start;
}

.about-portrait {
  flex: 0 0 auto;
  width: min(340px, 56vw);
  max-width: 100%;
  height: auto;
  border: 2px solid #000;
  display: block;
}

.about-text {
  flex: 1 1 16rem;
  margin: 0;
  max-width: none;
}

.about-text a {
  color: #000;
}

.about-figure {
  margin: 0;
  padding: 0;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
}

.about-caption {
  margin-top: 0.5rem;
  color: var(--text);
  font-size: 1.2rem;
  line-height: 1.3;
  text-align: center;
  width: 100%;
}

.about-school-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text);
  font-size: 1.15rem;
}

.about-school-list li {
  margin: 0.15rem 0;
}

.about-certificates {
  margin: 0.25rem 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--text);
  font-size: 1.08rem;
}

.about-certificates li {
  margin: 0.15rem 0;
  position: relative;
  padding-left: 1.2rem;
}

.about-certificates li::before {
  content: "->";
  position: absolute;
  left: 0;
  top: 0;
}

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

.certificate-list li {
  background: #fff;
  border: 2px solid #000;
  padding: 0.8rem 0.9rem;
  margin-bottom: 0.75rem;
}

.panel-next {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.9rem;
}

.next-button {
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.next-arrow-image {
  width: 56px;
  height: 28px;
  display: block;
}

.fruit-icons {
  display: inline-flex;
  gap: 0.35rem;
  margin-left: 0.45rem;
  vertical-align: middle;
  transform: translateY(2px);
}

.fruit-icon {
  width: 22px;
  height: 22px;
  display: block;
  shape-rendering: crispEdges;
}

.bb-cafe-link {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  flex-wrap: wrap;
}

.bb-cafe-thumb {
  width: 380px;
  height: 220px;
  border: 2px solid #000;
  display: block;
  position: relative;
  overflow: hidden;
  background: #dff4ff;
}

.bb-cafe-thumb svg {
  width: 100%;
  height: 100%;
  display: block;
}

.bb-cafe-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bb-cafe-title {
  font-weight: 700;
  font-size: 1.18rem;
  color: #000;
}

.bb-play-badge {
  width: 44px;
  height: 44px;
  border: 2px solid #000;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.dpr-carousel {
  margin-top: 1rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
}

.dpr-carousel-stage {
  position: relative;
  width: 100%;
  max-width: 680px;
  height: clamp(240px, 40vw, 420px);
  min-height: 240px;
  background: #fff;
  border: 2px solid #000;
  overflow: hidden;
}

.dpr-carousel-nav {
  appearance: none;
  background: #fff;
  border: 2px solid #000;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  cursor: pointer;
  flex: 0 0 auto;
  position: relative;
}

.dpr-prev::before,
.dpr-next::before {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-pixel);
  font-size: 2rem;
  line-height: 1;
  color: #000;
}

.dpr-prev::before {
  content: "<";
  transform: translateX(-2px);
}

.dpr-next::before {
  content: ">";
  transform: translateX(2px);
}

.dpr-slide {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: translate(-50%, -50%) scale(0.88);
  opacity: 0;
  filter: saturate(0.95);
  transition: transform 220ms ease, opacity 220ms ease, filter 220ms ease;
  pointer-events: none;
}

.dpr-slide.is-active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
  transform: translate(-50%, -50%) scale(1);
}

.dpr-slide.is-left {
  opacity: 0.72;
  pointer-events: auto;
  z-index: 1;
  transform: translate(-50%, -50%) translateX(-32%) scale(0.75);
}

.dpr-slide.is-right {
  opacity: 0.72;
  pointer-events: auto;
  z-index: 1;
  transform: translate(-50%, -50%) translateX(32%) scale(0.75);
}

@media (max-width: 520px) {
  .dpr-carousel-nav {
    width: 42px;
    height: 42px;
  }

  .dpr-prev::before,
  .dpr-next::before {
    font-size: 1.75rem;
  }

  .dpr-carousel-stage {
    height: clamp(220px, 55vw, 360px);
    min-height: 220px;
  }

  .dpr-slide.is-left {
    transform: translate(-50%, -50%) translateX(-28%) scale(0.72);
  }

  .dpr-slide.is-right {
    transform: translate(-50%, -50%) translateX(28%) scale(0.72);
  }
}