/* Oshi Life の LP の見た目。色はアプリのコードの値（設計書 8 節）。値を足すときは :root の名前つきの変数にする。 */

:root {
  --color-screen: #FBF6F8;
  --color-surface: #FFFFFF;
  --color-tint: #FBEAF0;
  --color-line: #EADFE6;
  --color-text: #2E2534;
  --color-text-secondary: #5F5368;
  --color-text-tertiary: #746982;
  --color-accent-text: #A23F66;
  --color-brand: #E86B8F;
  --color-on-ink: #FFFFFF;
  --color-on-gradient: #FFFFFF;
  --color-dark-screen: #141116;
  --color-dark-surface: #1E1A21;
  --color-dark-raised: #28232C;
  --color-dark-text: #F4EEF6;
  --color-dark-text-secondary: #C9BFD0;
  --color-dark-accent-text: #F08FAD;
  --color-header-glass: rgba(251, 246, 248, 0.92);
  --color-shadow: rgba(46, 37, 52, 0.10);
  --color-shadow-strong: rgba(46, 37, 52, 0.20);
  --gradient-brand-readable: linear-gradient(135deg, #B15C73 0%, #BA5673 50%, #7A69C6 100%);
  --gradient-wordmark: linear-gradient(135deg, #E8568E 0%, #8E5BD0 100%);
  --font-body: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  --font-rounded: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", var(--font-body);
  --content-width: 1120px;
  --text-width: 36rem;
  --radius-card: 20px;
  --radius-panel: 28px;
  --radius-phone: 34px;
  --phone-border: 7px;
  --phone-aspect-ratio: 640 / 1391;
  --shadow-card: 0 12px 32px var(--color-shadow);
  --shadow-phone: 0 24px 60px var(--color-shadow-strong);
  --space-section: clamp(72px, 10vw, 128px);
  --space-gutter: clamp(20px, 5vw, 40px);
  --header-height: 64px;
  --touch-target: 44px;
  --badge-height: 48px;
}

html:lang(en) {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

html:lang(ko) {
  --font-body: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

html:lang(zh-Hans) {
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

html:lang(zh-Hant) {
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  background: var(--color-screen);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  line-height: 1.3;
  text-wrap: balance;
}

a {
  color: var(--color-accent-text);
  text-underline-offset: 0.2em;
}

:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
  border-radius: 6px;
}

.phrase {
  display: inline-block;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -64px;
  left: 12px;
  z-index: 30;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--color-text);
  color: var(--color-on-ink);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

/* ヘッダー */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-header-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--content-width);
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}

.wordmark {
  margin-right: auto;
  color: var(--color-text);
  font-family: var(--font-rounded);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark__life {
  background: var(--gradient-wordmark);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.language-menu {
  position: relative;
}

.language-menu summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: var(--touch-target);
  padding: 0 12px;
  border-radius: 999px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

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

.language-menu summary:hover,
.language-menu[open] summary {
  background: var(--color-tint);
  color: var(--color-text);
}

.language-menu ul {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 11rem;
  margin: 0;
  padding: 6px;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  list-style: none;
}

.language-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--color-text);
  text-decoration: none;
}

.language-menu a:hover {
  background: var(--color-tint);
}

.language-menu a[aria-current="page"] {
  color: var(--color-accent-text);
  font-weight: 700;
}

/* ボタン */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: 0 22px;
  border-radius: 999px;
  background: var(--color-text);
  color: var(--color-on-ink);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.button:hover {
  background: var(--color-accent-text);
}

.button--small {
  padding: 0 16px;
  font-size: 0.875rem;
}

.button--large {
  min-height: 56px;
  padding: 0 32px;
  font-size: 1.0625rem;
}

/* 節の共通の形 */

.section {
  padding: var(--space-section) var(--space-gutter);
}

.section__inner {
  display: grid;
  align-items: center;
  gap: clamp(40px, 6vw, 72px);
  max-width: var(--content-width);
  margin: 0 auto;
}

/* 1列の節は、見出しと中身のあいだを中身の側の余白で取る。 */
.section__inner:not(.section__inner--split) {
  gap: 0;
}

.section__text {
  max-width: var(--text-width);
}

.section__media {
  min-width: 0;
  margin: 0;
}

@media (min-width: 880px) {
  .section__inner--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }

  .section--reverse .section__inner--split {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  }

  .section--reverse .section__media {
    order: -1;
  }

  /* ヒーローは見出しを2行に収めるため、文の列を広く取る。 */
  .hero .section__inner--split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  /* 文の長い節では、画面の画像を上にそろえ、読み進めるあいだ画面に残す。 */
  .section:not(.hero) .section__inner--split {
    align-items: start;
  }

  .section:not(.hero) .section__inner--split > .section__media {
    position: sticky;
    top: calc(var(--header-height) + 32px);
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--color-accent-text);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand);
}

.section__title {
  font-size: clamp(1.75rem, 1.15rem + 2.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section__lead {
  margin-top: 20px;
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
}

.section__note {
  margin-top: 12px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.section__caption {
  margin-top: 20px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  text-align: center;
}

/* 暗い節（推しの色とダークモード） */

.section--dark {
  background: var(--color-dark-screen);
  color: var(--color-dark-text);
}

.section--dark :focus-visible {
  outline-color: var(--color-dark-text);
}

.section--dark .eyebrow {
  color: var(--color-dark-accent-text);
}

.section--dark .section__lead,
.section--dark .point p {
  color: var(--color-dark-text-secondary);
}

.section--dark .point {
  border-color: var(--color-dark-raised);
  background: var(--color-dark-surface);
}

.section--dark .point__tag {
  background: var(--color-dark-raised);
  color: var(--color-dark-accent-text);
}

/* ヒーロー */

.hero {
  padding-top: clamp(40px, 8vw, 96px);
}

.hero__title {
  font-size: clamp(2.25rem, 1.3rem + 4.2vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero__lead {
  margin-top: 24px;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

/* Apple の決まり: 高さは 40px 以上、まわりにバッジの高さの 1/4 の余白。 */
.app-store-badge {
  display: inline-block;
  padding: calc(var(--badge-height) / 4) 0;
}

.app-store-badge img {
  width: auto;
  height: var(--badge-height);
}

.hero__note {
  margin-top: 8px;
  padding: 14px 18px;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.hero__requirements {
  margin-top: 12px;
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
}

/* 動画の枠と、端末の形の枠 */

.media-slot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 3vw, 24px);
  width: 100%;
  max-width: 560px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  padding: clamp(16px, 5vw, 40px);
  border-radius: var(--radius-panel);
}

.media-slot:has(video) {
  padding: 0;
  overflow: hidden;
}

.media-slot--light {
  background: var(--color-screen);
}

.media-slot--dark {
  background: var(--color-dark-screen);
}

.media-slot .phone {
  width: auto;
  height: 100%;
  aspect-ratio: var(--phone-aspect-ratio);
}

.media-slot .phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-slot__video,
.media-slot__still {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.media-slot__still {
  display: none;
}

.media-slot__toggle {
  position: absolute;
  right: 16px;
  bottom: 16px;
  display: grid;
  place-items: center;
  width: var(--touch-target);
  height: var(--touch-target);
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.media-slot__toggle[hidden] {
  display: none;
}

/* 再生中は一時停止の印（縦線2本）、止まっているときは再生の印（三角）。 */
.media-slot__toggle::before {
  content: "";
  width: 12px;
  height: 14px;
  border-inline: 4px solid currentColor;
}

.media-slot__toggle[data-state="paused"]::before {
  width: 14px;
  height: 16px;
  border: 0;
  background: currentColor;
  clip-path: polygon(15% 0, 100% 50%, 15% 100%);
}

.phone {
  overflow: hidden;
  border: var(--phone-border) solid var(--color-dark-surface);
  border-radius: var(--radius-phone);
  background: var(--color-dark-surface);
  box-shadow: var(--shadow-phone);
}

.phone img {
  width: 100%;
  height: auto;
}

.section__media > .phone {
  width: min(72vw, 300px);
  margin: 0 auto;
}

/* 要点の一覧 */

.points {
  display: grid;
  gap: 14px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .points--grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .points--grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.point {
  padding: 20px 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.point__title {
  font-size: 1.0625rem;
  font-weight: 700;
}

.point__tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--color-tint);
  color: var(--color-accent-text);
  font-size: 0.75rem;
  font-weight: 700;
  vertical-align: 0.15em;
}

.point p {
  margin-top: 8px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.callout {
  margin-top: 24px;
  padding: 16px 20px;
  border-radius: 16px;
  background: var(--color-tint);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 700;
}

/* 当落の流れ（画面に入ると順に現れる。動きを減らす設定と、対応しないブラウザでは初めから全部見せる） */

.timeline {
  display: grid;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: timeline-step;
}

.timeline__step {
  position: relative;
  padding: 0 0 24px 48px;
  counter-increment: timeline-step;
}

.timeline__step::before {
  content: counter(timeline-step);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-text);
  color: var(--color-on-ink);
  font-size: 0.875rem;
  font-weight: 700;
}

.timeline__step::after {
  content: "";
  position: absolute;
  top: 34px;
  bottom: 4px;
  left: 14px;
  width: 2px;
  background: var(--color-line);
}

.timeline__step:last-child {
  padding-bottom: 0;
}

.timeline__step:last-child::after {
  display: none;
}

.timeline__title {
  font-size: 1rem;
  font-weight: 700;
}

.timeline__step p {
  margin-top: 4px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

@keyframes timeline-reveal {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .timeline__step {
      animation: timeline-reveal linear both;
      animation-timeline: view();
      animation-range: entry 10% cover 30%;
    }
  }
}

/* Free と Premium */

.plans {
  display: grid;
  gap: 24px;
  margin-top: 40px;
}

@media (min-width: 880px) {
  .plans {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

.plan {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-surface);
}

.plan__header {
  padding: 22px 28px;
  border-bottom: 1px solid var(--color-line);
}

/* グラデーションの上の白い文字は 24px 以上の太字だけ（設計書 8 節）。 */
.plan--premium .plan__header {
  border-bottom: 0;
  background: var(--gradient-brand-readable);
  color: var(--color-on-gradient);
}

.plan__name {
  font-size: 1.75rem;
  font-weight: 800;
}

.plan__body {
  padding: 24px 28px 28px;
}

.plan__summary {
  font-weight: 700;
}

.plan__note {
  margin-top: 20px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.limits {
  width: 100%;
  margin-top: 16px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.limits caption {
  margin-bottom: 6px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 700;
  text-align: left;
}

.limits th,
.limits td {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-line);
  font-weight: 400;
  text-align: left;
}

.limits td {
  padding-left: 12px;
  font-weight: 700;
  text-align: right;
  white-space: nowrap;
}

.checklist {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 28px;
}

.checklist li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 3px;
  width: 13px;
  height: 7px;
  border-bottom: 2.5px solid var(--color-brand);
  border-left: 2.5px solid var(--color-brand);
  transform: rotate(-45deg);
}

/* よくある質問 */

.faq {
  display: grid;
  gap: 12px;
  max-width: 760px;
  margin-top: 32px;
}

.faq__item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}

.faq__item summary {
  position: relative;
  padding: 18px 56px 18px 22px;
  font-weight: 700;
  list-style: none;
  cursor: pointer;
}

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

.faq__item summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 24px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-secondary);
  border-bottom: 2px solid var(--color-text-secondary);
  transform: translateY(-70%) rotate(45deg);
}

.faq__item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.faq__answer {
  padding: 0 22px 20px;
  color: var(--color-text-secondary);
}

/* 最後の CTA */

.start .section__inner {
  justify-items: center;
  gap: 20px;
  text-align: center;
}

.start__icon {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}

.start__title {
  font-size: clamp(1.75rem, 1.15rem + 2.6vw, 2.75rem);
  font-weight: 800;
}

.start__lead {
  max-width: var(--text-width);
  color: var(--color-text-secondary);
}

/* フッター */

.site-footer {
  padding: 48px var(--space-gutter) 56px;
  border-top: 1px solid var(--color-line);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.site-footer__inner {
  display: grid;
  gap: 20px;
  max-width: var(--content-width);
  margin: 0 auto;
}

.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a {
  color: var(--color-text-secondary);
}

.site-footer a[aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
}

/* 動きを減らす設定 */

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

  .media-slot__video {
    display: none;
  }

  .media-slot__still {
    display: block;
  }
}