/* 氷川の梨 — 応援のための静的 LP */

:root {
  /* 神田明神サイト準拠: 朱 #e71a1d / 金 #f1c015 / 文字灰 #6f6b69 / 墨 #1e1d1c */
  --color-bg: #ffffff;
  --color-bg-deep: #f7f5f3;
  --color-surface: #ffffff;
  --color-ink: #1e1d1c;
  --color-text: #1e1d1c;
  --color-text-secondary: #6f6b69;
  --color-accent: #e71a1d;
  --color-accent-hover: #af0800;
  --color-hope: #f1c015;
  --color-line: rgba(111, 107, 105, 0.28);
  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --max: 38rem;
  --max-wide: 64rem;
  --space: clamp(1.25rem, 4vw, 2rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--color-text);
  background:
    radial-gradient(85% 55% at 100% 0%, rgba(241, 192, 21, 0.14), transparent 52%),
    radial-gradient(70% 45% at 0% 20%, rgba(231, 26, 29, 0.06), transparent 50%),
    linear-gradient(180deg, #ffffff 0%, var(--color-bg) 50%, var(--color-bg-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-accent-hover);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--color-text);
  color: #fff;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* —— Header —— */
.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  padding: 1.25rem var(--space);
}

.site-header__inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__brand {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  color: #fff;
  text-decoration: none;
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.4);
}

.site-header__nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.35);
}

.site-header__nav a:hover {
  color: #fff;
}

/* —— Hero（モバイル前提: 画面高さの 2/3） —— */
.hero {
  position: relative;
  min-height: 66.666svh;
  min-height: 66.666vh;
  display: grid;
  align-items: end;
  color: #fff;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(30, 29, 28, 0.15) 0%, rgba(30, 29, 28, 0.35) 48%, rgba(30, 29, 28, 0.72) 100%),
    url("../images/top.png") center / cover no-repeat,
    linear-gradient(145deg, #af0800 0%, #e71a1d 40%, #f84624 68%, #1e1d1c 100%);
  transform: scale(1.04);
  animation: hero-drift 32s var(--ease) infinite alternate;
}

.hero__media--fallback::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 40% at 70% 28%, rgba(241, 192, 21, 0.35), transparent 60%),
    radial-gradient(circle at 18% 78%, rgba(248, 70, 36, 0.28), transparent 45%);
  pointer-events: none;
}

@keyframes hero-drift {
  from {
    transform: scale(1.04) translate(0, 0);
  }
  to {
    transform: scale(1.09) translate(-1.2%, 0.8%);
  }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--max-wide);
  width: 100%;
  margin: 0 auto;
  padding: 4.25rem var(--space) 1.25rem;
  opacity: 0;
  transform: translateY(0.75rem);
  animation: fade-up 1s var(--ease) 0.12s forwards;
}

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

.hero__brand {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 8vw, 2.6rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.08em;
}

.hero__headline {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3.8vw, 1.3rem);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.hero__lead {
  margin: 0 0 1rem;
  max-width: 26rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.88);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.7rem;
}

@media (min-width: 768px) {
  .hero__content {
    padding: clamp(5rem, 10vh, 6.5rem) var(--space) 1.5rem;
  }

  .hero__brand {
    font-size: clamp(2.4rem, 5.5vw, 3.5rem);
    margin-bottom: 0.65rem;
  }

  .hero__headline {
    font-size: clamp(1.2rem, 2.4vw, 1.55rem);
    margin-bottom: 0.85rem;
  }

  .hero__lead {
    font-size: 1rem;
    margin-bottom: 1.35rem;
  }
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.55rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-ghost {
  background: #fff;
  border-color: #fff;
  color: var(--color-accent);
}

.btn-ghost:hover {
  background: #fff;
  border-color: #fff;
  color: var(--color-accent-hover);
}

.btn--block {
  width: 100%;
}

/* —— Sections —— */
.section {
  padding: clamp(2.75rem, 8vw, 5.75rem) var(--space);
}

.section__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section__eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

.section__title {
  margin: 0 0 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.8vw, 1.85rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.55;
  text-wrap: balance;
}

.section__lead {
  margin: 0 0 1.35rem;
  color: var(--color-text-secondary);
  line-height: 1.9;
}

.prose p {
  margin: 0 0 1.1rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose--muted {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.voice-quote {
  margin: 2rem 0;
  padding: 1.25rem 0 1.25rem 0;
  border: none;
  text-align: center;
}

.voice-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.7rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--color-text);
}

.reveal {
  opacity: 0;
  transform: translateY(1.1rem);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

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

/* —— Facts —— */
.fact-list {
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.fact-list li {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem 1rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.98rem;
}

.fact-list .label {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.fact-list .value {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.fact-list .value-note {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

@media (max-width: 520px) {
  .fact-list li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* —— Cost breakdown —— */
#breakdown {
  background: var(--color-bg);
}

.breakdown-total {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.25rem;
  padding: 1.1rem 0 1.25rem;
  border-bottom: 1px solid var(--color-ink);
}

.breakdown-total__label {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.breakdown-total__value {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.65rem);
  letter-spacing: 0.04em;
}

.breakdown-total__value span {
  margin-left: 0.35rem;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
}

.breakdown-details {
  border-bottom: 1px solid var(--color-line);
}

.breakdown-details summary {
  cursor: pointer;
  padding: 1rem 0;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  list-style: none;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.breakdown-details summary::-webkit-details-marker {
  display: none;
}

.breakdown-details summary::after {
  content: "+";
  float: right;
  color: var(--color-text-secondary);
}

.breakdown-details[open] summary::after {
  content: "−";
}

.breakdown-details[open] summary {
  color: var(--color-text);
}

.breakdown-list {
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
}

.breakdown-list li {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.98rem;
}

.breakdown-list__name {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  letter-spacing: 0.04em;
}

.breakdown-list__name small {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

.breakdown-list__pct {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-align: right;
  min-width: 3.25rem;
}

.breakdown-list__yen {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-align: right;
  min-width: 4.5rem;
}

.breakdown-note {
  margin: 0.85rem 0 0;
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

@media (max-width: 520px) {
  .breakdown-list li {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name yen"
      "name pct";
    gap: 0.15rem 1rem;
  }

  .breakdown-list__name {
    grid-area: name;
  }

  .breakdown-list__pct {
    grid-area: pct;
    font-size: 0.78rem;
  }

  .breakdown-list__yen {
    grid-area: yen;
  }
}

/* —— Include / photos —— */
.include-list {
  margin: 1.25rem 0 0;
  padding-left: 1.15rem;
}

.include-list li {
  margin-bottom: 0.55rem;
}

.photo-slots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-top: 2rem;
}

.photo-slots--single {
  grid-template-columns: 1fr;
}

.photo-slot {
  aspect-ratio: 4 / 3;
  background:
    linear-gradient(160deg, #f7f0e8, #e8d4c4 55%, #c9a090);
  border-radius: 4px;
  display: grid;
  place-items: end start;
  padding: 0.75rem;
  overflow: hidden;
  position: relative;
}

.photo-slot--wide {
  aspect-ratio: 16 / 10;
}

.photo-slot--featured {
  aspect-ratio: 3 / 4;
  max-width: 22rem;
  margin-inline: auto;
  width: 100%;
}

.photo-slot img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-slot span {
  position: relative;
  z-index: 1;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(14, 28, 34, 0.45);
  padding: 0.25rem 0.5rem;
  border-radius: 2px;
}

@media (max-width: 520px) {
  .photo-slots {
    grid-template-columns: 1fr;
  }
}

/* —— Voices slider —— */
.voice-slider {
  margin-top: 2rem;
  --voice-slide-h: min(28rem, 58vh);
}

.voice-slider__viewport {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background:
    linear-gradient(160deg, #f7f0e8, #ebe3da 55%, #e2d6c8);
  border: 1px solid var(--color-line);
}

.voice-slider__viewport::before,
.voice-slider__viewport::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(1.25rem, 6vw, 3rem);
  z-index: 2;
  pointer-events: none;
}

.voice-slider__viewport::before {
  left: 0;
  background: linear-gradient(90deg, rgba(247, 240, 232, 0.95), transparent);
}

.voice-slider__viewport::after {
  right: 0;
  background: linear-gradient(270deg, rgba(247, 240, 232, 0.95), transparent);
}

.voice-slider__track {
  list-style: none;
  margin: 0;
  padding: 0.85rem max(1rem, calc((100% - min(14.5rem, 72vw)) / 2));
  display: flex;
  gap: 0.85rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.voice-slider__track::-webkit-scrollbar {
  display: none;
}

.voice-slider__slide {
  flex: 0 0 auto;
  width: min(14.5rem, 72vw);
  height: var(--voice-slide-h);
  scroll-snap-align: center;
  display: grid;
  place-items: center;
  background: #fff;
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(30, 29, 28, 0.04);
  overflow: hidden;
}

.voice-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top center;
  background: #fff;
}

.voice-slider__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.voice-slider__btn {
  appearance: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.voice-slider__btn:hover,
.voice-slider__btn:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
  outline: none;
}

.voice-slider__btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

.voice-slider__status {
  margin: 0;
  min-width: 4.5rem;
  text-align: center;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.voice-slider__dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.voice-slider__dot {
  appearance: none;
  width: 0.45rem;
  height: 0.45rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(111, 107, 105, 0.35);
  cursor: pointer;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.voice-slider__dot[aria-selected="true"] {
  background: var(--color-accent);
  transform: scale(1.25);
}

.voice-slider__dot:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .voice-slider {
    --voice-slide-h: min(32rem, 62vh);
  }

  .voice-slider__track {
    padding-inline: max(1rem, calc((100% - min(16.5rem, 42vw)) / 2));
  }

  .voice-slider__slide {
    width: min(16.5rem, 42vw);
  }
}

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

/* —— Cheer / buy —— */
.section--cheer {
  background:
    linear-gradient(180deg, rgba(231, 26, 29, 0.05), rgba(255, 255, 255, 0.95));
}

.cheer-panel {
  margin-top: 1.75rem;
  padding: 1.75rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-accent);
  border-radius: 2px;
  text-align: center;
}

.cheer-panel__name {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.cheer-panel__price {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.85rem;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.cheer-panel__note {
  margin: 0 0 1.35rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.stripe-buy-mount {
  margin: 0.5rem 0 0;
  display: flex;
  justify-content: center;
  min-height: 3rem;
}

.stripe-buy-mount stripe-buy-button {
  width: 100%;
  max-width: 100%;
}

.stripe-buy-mount--bar {
  margin: 0;
  min-height: 0;
}

.stripe-buy-mount--bar stripe-buy-button {
  width: max-content;
  max-width: 100%;
}

.config-warning {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(231, 26, 29, 0.35);
  background: rgba(231, 26, 29, 0.06);
  font-size: 0.88rem;
  color: var(--color-accent);
  border-radius: 2px;
}

.config-warning[hidden] {
  display: none !important;
}

/* —— Legal —— */
.section--legal {
  padding-bottom: 2rem;
}

.legal-details {
  border-top: 1px solid var(--color-line);
}

.legal-details summary {
  cursor: pointer;
  padding: 1rem 0;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  list-style: none;
}

.legal-details summary::-webkit-details-marker {
  display: none;
}

.legal-details summary::after {
  content: "+";
  float: right;
  color: var(--color-text-secondary);
}

.legal-details[open] summary::after {
  content: "−";
}

.legal-details .legal-body {
  padding: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.legal-body dl {
  margin: 0;
}

.legal-body dt {
  margin-top: 0.85rem;
  color: var(--color-text);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.legal-body dd {
  margin: 0.2rem 0 0;
}

/* —— Footer —— */
.site-footer {
  padding: 2.5rem var(--space) 3.5rem;
  border-top: 1px solid var(--color-line);
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
}

.site-footer .brand {
  font-family: var(--font-display);
  margin-bottom: 0.4rem;
  color: var(--color-text);
  letter-spacing: 0.1em;
}

/* —— Mobile sticky —— */
.mobile-buy-bar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  padding: 0.85rem var(--space) calc(0.85rem + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid var(--color-line);
  backdrop-filter: blur(10px);
}

.mobile-buy-bar.is-active {
  display: block;
}

@media (min-width: 768px) {
  .mobile-buy-bar.is-active {
    display: none;
  }
}

body.has-mobile-bar {
  padding-bottom: 5.25rem;
}

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

  .hero__media {
    animation: none;
  }

  .hero__content,
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }
}