:root {
  --ink: #1c2a2e;
  --ink-soft: #3d5258;
  --paper: #f7f3ea;
  --foam: #e8f2f0;
  --sea: #1f6f6a;
  --sea-deep: #0f3d42;
  --gold: #d4a24c;
  --coral: #c45c48;
  --sky-top: #0b2c36;
  --sky-mid: #1a5560;
  --sky-low: #4f8f88;
  --line: rgba(28, 42, 46, 0.12);
  --font-display: "Kaisei Decol", serif;
  --font-body: "Zen Kaku Gothic New", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(79, 143, 136, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(212, 162, 76, 0.12), transparent 50%),
    linear-gradient(180deg, var(--foam) 0%, var(--paper) 40%, #efe8da 100%);
  min-height: 100vh;
}

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

a {
  color: inherit;
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-content: end;
  padding: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(2.5rem, 8vh, 5rem);
  overflow: hidden;
  color: #f4efe4;
  background:
    linear-gradient(180deg, transparent 40%, rgba(15, 61, 66, 0.55) 100%),
    linear-gradient(165deg, var(--sky-top) 0%, var(--sky-mid) 48%, var(--sky-low) 100%);
}

.hero__sky {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.star {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #f7e7b8;
  opacity: 0.85;
  animation: twinkle 3.6s ease-in-out infinite;
}

.star--1 { top: 14%; left: 18%; animation-delay: 0s; }
.star--2 { top: 22%; left: 72%; width: 3px; height: 3px; animation-delay: 0.8s; }
.star--3 { top: 34%; left: 48%; animation-delay: 1.4s; }
.star--4 { top: 18%; left: 88%; width: 2px; height: 2px; animation-delay: 2s; }
.star--5 { top: 40%; left: 28%; width: 3px; height: 3px; animation-delay: 1.1s; }

.tanzaku {
  position: absolute;
  width: 10px;
  height: 28px;
  border-radius: 1px;
  opacity: 0.7;
  transform-origin: top center;
  animation: sway 5s ease-in-out infinite;
}

.tanzaku--1 {
  top: 12%;
  left: 62%;
  background: #e8c56a;
  animation-delay: 0.2s;
}

.tanzaku--2 {
  top: 8%;
  left: 66%;
  height: 34px;
  background: #7eb8b0;
  animation-delay: 0.9s;
}

.tanzaku--3 {
  top: 15%;
  left: 70%;
  height: 24px;
  background: #d97868;
  animation-delay: 1.6s;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 40rem;
  animation: rise-in 1s ease-out both;
}

.brand {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.1;
}

.hero__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4.5vw, 2.6rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero__lead {
  margin: 0 0 1.75rem;
  max-width: 28rem;
  font-size: clamp(0.95rem, 2.2vw, 1.1rem);
  color: rgba(244, 239, 228, 0.88);
}

.hero__cta {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  border: 1px solid rgba(244, 239, 228, 0.55);
  background: rgba(244, 239, 228, 0.08);
  backdrop-filter: blur(6px);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.hero__cta:hover {
  background: rgba(244, 239, 228, 0.18);
  border-color: rgba(244, 239, 228, 0.9);
  transform: translateY(-2px);
}

.hero__visual {
  position: relative;
  z-index: 1;
  margin-top: clamp(2.5rem, 8vh, 4.5rem);
  animation: rise-in 1s ease-out 0.2s both;
}

.route-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  letter-spacing: 0.12em;
  color: rgba(244, 239, 228, 0.92);
}

.route-line__dash {
  display: block;
  width: clamp(2rem, 8vw, 4.5rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(244, 239, 228, 0.75), transparent);
}

/* —— Sections —— */
main {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 5rem) 0;
}

.overview {
  margin-bottom: clamp(3rem, 8vw, 4.5rem);
  animation: fade-up 0.8s ease both;
}

.overview h2,
.section-head h2,
.cast h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.overview p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

/* —— Timeline —— */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line);
}

.day {
  position: relative;
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem 1.25rem;
  padding: 0 0 2rem 1.35rem;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.day.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition-delay: calc(var(--i, 0) * 40ms);
}

.day::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.45rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sea);
  box-shadow: 0 0 0 4px rgba(31, 111, 106, 0.15);
}

.day--highlight::before { background: var(--gold); box-shadow: 0 0 0 4px rgba(212, 162, 76, 0.2); }
.day--stay::before { background: var(--coral); box-shadow: 0 0 0 4px rgba(196, 92, 72, 0.18); }
.day--live::before { background: #2d5a7b; box-shadow: 0 0 0 4px rgba(45, 90, 123, 0.18); }
.day--family::before { background: #6b8f71; box-shadow: 0 0 0 4px rgba(107, 143, 113, 0.18); }
.day--finale::before { background: var(--sea-deep); box-shadow: 0 0 0 4px rgba(15, 61, 66, 0.18); }

.day time {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.day time span {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}

.day__body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
}

.day__body p {
  margin: 0 0 0.75rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tags li {
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* —— Cast —— */
.cast {
  margin-top: clamp(2rem, 6vw, 3.5rem);
  padding-top: clamp(2rem, 6vw, 3rem);
  border-top: 1px solid var(--line);
}

.cast__grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

@media (min-width: 640px) {
  .cast__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
}

.cast article h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--sea-deep);
}

.cast article p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* —— Footer —— */
.footer {
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer__brand {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.1em;
}

.footer p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

/* —— Motion —— */
@keyframes twinkle {
  0%, 100% { opacity: 0.35; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.35); }
}

@keyframes sway {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(10deg); }
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .star,
  .tanzaku,
  .hero__content,
  .hero__visual,
  .overview,
  .day {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

@media (max-width: 520px) {
  .day {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .day time {
    font-size: 1rem;
  }
}