:root {
  --ink: #111111;
  --paper: #f4f1ea;
  --paper-bright: #fffdf8;
  --halftone: #d8d2c6;
  --gold: #f0b429;
  --gold-deep: #c4890a;
  --blue: #1e5eff;
  --blue-deep: #0a2a6e;
  --navy: #0b1424;
  --speech: #ffffff;
  --font-impact: "Bangers", cursive;
  --font-manga: "Zen Kurenaido", sans-serif;
  --font-body: "Sora", sans-serif;
  --panel-border: 3px solid var(--ink);
  --traveler-size: clamp(88px, 14vw, 140px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  min-height: 100vh;
}

.page-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.07;
  background-image: radial-gradient(circle, #000 0.6px, transparent 0.7px);
  background-size: 4px 4px;
}

/* Traveler character */
.traveler {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--traveler-size);
  z-index: 40;
  pointer-events: none;
  will-change: transform;
  transition: filter 0.3s ease;
}

.traveler-img {
  width: 100%;
  height: auto;
  display: block;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--paper-bright);
  box-shadow: 4px 4px 0 var(--ink);
  animation: traveler-bob 2.4s ease-in-out infinite;
}

.traveler-burst {
  position: absolute;
  top: -0.35rem;
  right: -0.55rem;
  font-family: var(--font-impact);
  font-size: 1.35rem;
  color: var(--gold);
  text-shadow: 2px 2px 0 var(--ink);
  opacity: 0;
  transform: scale(0.4) rotate(-12deg);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.traveler.is-burst .traveler-burst {
  opacity: 1;
  transform: scale(1) rotate(-8deg);
}

.traveler.is-right .traveler-img {
  transform: scaleX(-1);
}

@keyframes traveler-bob {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -8px;
  }
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem clamp(0.9rem, 3vw, 2rem);
  background: rgba(244, 241, 234, 0.92);
  border-bottom: var(--panel-border);
  backdrop-filter: blur(6px);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.logo {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--ink);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-family: var(--font-impact);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.brand-text span {
  font-size: 0.75rem;
  font-weight: 700;
  color: #555;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  font-family: var(--font-impact);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--blue);
}

.buy-link {
  padding: 0.35rem 0.85rem;
  background: var(--gold);
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  color: var(--ink) !important;
}

.buy-link:hover {
  translate: -1px -1px;
  box-shadow: 3px 3px 0 var(--ink);
  color: var(--ink) !important;
}

/* Manga layout */
.manga {
  width: min(100%, 820px);
  margin-inline: auto;
  padding: 1.25rem clamp(0.75rem, 3vw, 1.25rem) 2rem;
}

.chapter {
  margin-bottom: 0.5rem;
}

.chapter-head {
  text-align: center;
  padding: 1.5rem 0.5rem 1.25rem;
  position: relative;
}

.chapter-num {
  display: inline-block;
  font-family: var(--font-impact);
  font-size: 1rem;
  letter-spacing: 0.12em;
  background: var(--ink);
  color: var(--paper);
  padding: 0.25rem 0.75rem;
  margin-bottom: 0.55rem;
}

.chapter-title {
  font-family: var(--font-impact);
  font-size: clamp(2.4rem, 8vw, 3.8rem);
  letter-spacing: 0.03em;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.chapter-sub {
  font-family: var(--font-manga);
  font-size: 1.2rem;
  color: #333;
}

.chapter-bw .chapter-title {
  color: var(--ink);
}

.chapter-color .chapter-title {
  color: var(--blue-deep);
  text-shadow: 3px 3px 0 var(--gold);
}

.chapter-break {
  text-align: center;
  padding: 1.5rem 0;
  font-family: var(--font-manga);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: #777;
}

.panel-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel {
  border: var(--panel-border);
  background: var(--paper-bright);
  position: relative;
  overflow: hidden;
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.12);
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.panel.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Splash / banner panel */
.panel-splash {
  min-height: min(72vh, 560px);
  background: var(--navy);
}

.panel-artframe {
  background: var(--ink);
  min-height: 0;
}

.panel-art {
  width: 100%;
  height: 100%;
  min-height: min(52vh, 420px);
  object-fit: cover;
  object-position: center;
  display: block;
  filter: contrast(1.05) saturate(1.08);
}

.panel-splash .panel-art {
  min-height: min(72vh, 560px);
  object-position: center top;
}

.speed-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      115deg,
      transparent 0 10px,
      rgba(255, 255, 255, 0.05) 10px 12px
    );
  mix-blend-mode: screen;
  animation: line-rush 1.8s linear infinite;
}

@keyframes line-rush {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 40px 20px;
  }
}

.speech {
  position: absolute;
  z-index: 2;
  background: var(--speech);
  border: 3px solid var(--ink);
  padding: 0.7rem 1rem;
  font-family: var(--font-impact);
  letter-spacing: 0.04em;
  box-shadow: 4px 4px 0 var(--ink);
}

.speech-impact {
  left: 1rem;
  bottom: 1.25rem;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  max-width: 12ch;
  transform: rotate(-3deg);
}

.speech-blurb {
  font-size: clamp(1rem, 2.8vw, 1.35rem);
  max-width: 16ch;
  line-height: 1.15;
}

.speech-blurb-bl {
  left: 1rem;
  bottom: 1rem;
  transform: rotate(-2deg);
}

.speech-blurb-br {
  right: 1rem;
  bottom: 1rem;
  left: auto;
  transform: rotate(2deg);
}

.speech-blurb-tl {
  left: 1rem;
  top: 1rem;
  bottom: auto;
  transform: rotate(-2deg);
}

.speech-blurb-tr {
  right: 1rem;
  top: 1rem;
  left: auto;
  bottom: auto;
  transform: rotate(2deg);
}

.speech-impact::after,
.speech-blurb-bl::after {
  content: "";
  position: absolute;
  right: 1.5rem;
  bottom: -14px;
  border: 10px solid transparent;
  border-top-color: var(--ink);
}

.speech-impact::before,
.speech-blurb-bl::before {
  content: "";
  position: absolute;
  right: 1.55rem;
  bottom: -9px;
  border: 8px solid transparent;
  border-top-color: var(--speech);
  z-index: 1;
}

.chapter-end .end-panel {
  border: var(--panel-border);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.12);
}

.panel-ink {
  background:
    radial-gradient(circle at 20% 10%, rgba(30, 94, 255, 0.08), transparent 40%),
    var(--paper-bright);
}

.panel-body {
  padding: clamp(1.1rem, 3vw, 1.75rem);
}

.narration {
  font-family: var(--font-manga);
  font-size: 1.25rem;
  line-height: 1.55;
  margin-bottom: 1rem;
  border-left: 4px solid var(--ink);
  padding-left: 0.85rem;
}

.dialogue {
  font-family: var(--font-manga);
  font-size: 1.15rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.ca-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  margin-bottom: 1.35rem;
}

.ca-label {
  font-family: var(--font-impact);
  font-size: 1.2rem;
  color: var(--blue);
}

.ca-value {
  font-family: var(--font-impact);
  font-size: clamp(1.05rem, 2.8vw, 1.55rem);
  letter-spacing: 0.02em;
  word-break: break-all;
  background: #fff;
  border: 3px solid var(--ink);
  padding: 0.35rem 0.6rem;
  box-shadow: 3px 3px 0 var(--ink);
}

.copy-btn {
  font-family: var(--font-impact);
  font-size: 1rem;
  letter-spacing: 0.04em;
  padding: 0.45rem 0.95rem;
  background: var(--gold);
  color: var(--ink);
  border: 2px solid var(--ink);
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--ink);
}

.copy-btn:hover {
  translate: -1px -1px;
  box-shadow: 3px 3px 0 var(--ink);
}

.copy-btn.is-copied {
  background: var(--blue);
  color: #fff;
}

.copy-btn-sm {
  font-size: 0.85rem;
  padding: 0.3rem 0.7rem;
}

.copied-toast {
  font-family: var(--font-impact);
  color: var(--blue);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.copied-toast.show {
  opacity: 1;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-impact);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.7rem 1.2rem;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transition: translate 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  translate: -2px -2px;
  box-shadow: 5px 5px 0 var(--ink);
}

.btn-buy {
  background: var(--gold);
  color: var(--ink);
}

.btn-x {
  background: #fff;
  color: var(--ink);
}

/* B&W chapter panels */
.chapter-bw {
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 18px,
      rgba(0, 0, 0, 0.03) 18px,
      rgba(0, 0, 0, 0.03) 19px
    );
  padding: 0.25rem;
}

.panel-row {
  display: grid;
  grid-template-columns: minmax(110px, 160px) 1fr;
  background: #fff;
  filter: grayscale(0.85) contrast(1.08);
}

.panel-row.panel-accent,
.panel-row.panel-flip {
  filter: none;
}

.panel-flip {
  background: linear-gradient(135deg, #111 0%, #222 100%);
  color: #f4f1ea;
}

.panel-flip .panel-tag,
.panel-flip h3,
.panel-flip p {
  color: #f4f1ea;
}

.panel-accent {
  background:
    linear-gradient(135deg, rgba(240, 180, 41, 0.2), transparent 50%),
    #fff;
}

.panel-thumb {
  position: relative;
  border-right: 3px solid var(--ink);
  background:
    radial-gradient(circle at center, #fff 30%, #ddd 100%);
  display: grid;
  place-items: center;
  padding: 0.75rem;
  overflow: hidden;
}

.panel-thumb img {
  width: 78%;
  max-width: 110px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  object-fit: cover;
}

.sfx {
  position: absolute;
  bottom: 0.4rem;
  left: 50%;
  translate: -50% 0;
  font-family: var(--font-impact);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--gold);
  text-shadow:
    1px 1px 0 #000,
    -1px 1px 0 #000,
    1px -1px 0 #000,
    -1px -1px 0 #000;
  white-space: nowrap;
}

.panel-tag {
  font-family: var(--font-impact);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: #666;
  display: block;
  margin-bottom: 0.25rem;
}

.panel-row h3 {
  font-family: var(--font-impact);
  font-size: 1.55rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.4rem;
}

.panel-row p {
  font-family: var(--font-manga);
  font-size: 1.1rem;
  line-height: 1.45;
  margin-bottom: 0.9rem;
}

.panel-row .btn {
  margin-top: 0.25rem;
}

/* Roadmap colorful panels */
.chapter-quest {
  background:
    radial-gradient(ellipse at top, rgba(30, 94, 255, 0.12), transparent 55%),
    var(--paper);
  padding: 0.25rem;
}

.roadmap-panels {
  gap: 1.15rem;
}

.panel-phase {
  padding: clamp(1.2rem, 3vw, 1.75rem);
  background: #fff;
  min-height: 160px;
}

.panel-phase:nth-child(odd) {
  margin-right: 8%;
  transform: rotate(-0.4deg);
}

.panel-phase:nth-child(even) {
  margin-left: 8%;
  transform: rotate(0.4deg);
}

.panel-phase.is-visible:nth-child(odd),
.panel-phase.is-visible:nth-child(even) {
  transform: rotate(0);
}

.phase-badge {
  display: inline-block;
  font-family: var(--font-impact);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  background: var(--blue);
  color: #fff;
  padding: 0.2rem 0.65rem;
  margin-bottom: 0.55rem;
  border: 2px solid var(--ink);
}

.panel-phase h3 {
  font-family: var(--font-impact);
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
}

.panel-phase p {
  font-family: var(--font-manga);
  font-size: 1.15rem;
  line-height: 1.45;
  margin-bottom: 0.85rem;
}

.mini-speech {
  display: inline-block;
  font-family: var(--font-impact);
  font-size: 1.1rem;
  background: #fff;
  border: 2px solid var(--ink);
  padding: 0.35rem 0.7rem;
  box-shadow: 2px 2px 0 var(--ink);
}

.mini-speech.impact {
  background: var(--gold);
  font-size: 1.35rem;
}

.panel-finale {
  background:
    linear-gradient(160deg, rgba(240, 180, 41, 0.35), #fff 55%);
}

/* End / TBC */
.chapter-end {
  padding: 2rem 0 1rem;
}

.end-panel {
  border: var(--panel-border);
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding: clamp(2rem, 5vw, 3.5rem) 1.25rem;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.2);
}

.end-logo {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--gold);
  margin-bottom: 1rem;
  animation: traveler-bob 2.4s ease-in-out infinite;
}

.end-stamp {
  font-family: var(--font-impact);
  font-size: clamp(2rem, 7vw, 3.2rem);
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.end-note {
  font-family: var(--font-manga);
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: #ccc;
}

.chapter-end .btn-x {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 3px 3px 0 rgba(255, 255, 255, 0.25);
}

.chapter-end .btn-x:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* Footer */
.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  padding: 1.25rem clamp(1rem, 3vw, 2rem);
  background: var(--navy);
  color: var(--paper);
  border-top: 3px solid var(--ink);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.logo-sm {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--gold);
}

.footer-brand strong {
  display: block;
  font-family: var(--font-impact);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--gold);
}

.footer-brand span {
  font-size: 0.8rem;
  color: #9eb0d0;
}

.footer-ca {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.7rem;
  font-size: 0.88rem;
}

.footer-ca span {
  font-family: var(--font-impact);
  color: var(--gold);
}

.footer-ca code {
  word-break: break-all;
  font-family: var(--font-body);
}

.footer .copy-btn {
  background: transparent;
  color: var(--paper);
  border-color: #9eb0d0;
  box-shadow: none;
}

.footer .copy-btn:hover {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--ink);
}

.footer-links {
  display: flex;
  gap: 1.15rem;
}

.footer-links a {
  color: var(--paper);
  font-family: var(--font-impact);
  font-size: 1.05rem;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--gold);
}

@media (max-width: 700px) {
  .brand-text {
    display: none;
  }

  .nav-links a:not(.buy-link) {
    font-size: 0.9rem;
  }

  .panel-row {
    grid-template-columns: 1fr;
  }

  .panel-thumb {
    border-right: none;
    border-bottom: 3px solid var(--ink);
    min-height: 140px;
  }

  .panel-phase:nth-child(odd),
  .panel-phase:nth-child(even) {
    margin-left: 0;
    margin-right: 0;
  }

  .traveler {
    opacity: 0.92;
  }

  .footer {
    flex-direction: column;
    text-align: center;
  }

  .footer-brand,
  .footer-ca {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .panel,
  .traveler-img,
  .speed-lines,
  .end-logo {
    animation: none !important;
    transition: none !important;
  }

  .panel {
    opacity: 1;
    transform: none;
  }
}