@charset "UTF-8";

.basic-verbs-page {
  --bv-theme: #438f86;
  --bv-dark: #2f7970;
  --bv-tint: #f4f8f7;
  background: #fff;
  line-height: 1.9;
}

.basic-verbs-page .top-line,
.basic-verbs-page .brand-mark,
.basic-verbs-page .nav-cta {
  background: var(--bv-theme);
}

.basic-verbs-page .nav-cta:hover {
  background: var(--bv-dark);
}

.basic-verbs-page :focus-visible {
  outline-color: var(--bv-dark);
}

.basic-verbs-page .brand-mark {
  font-family: var(--font-sans);
  font-weight: 800;
}

.basic-verbs-page .global-nav > a:not(.nav-cta):hover,
.basic-verbs-page .footer-links a:hover {
  color: var(--bv-dark);
}

.basic-verbs-page .global-nav > a:not(.nav-cta)::after {
  background: var(--bv-dark);
}

.basic-verbs-page .footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

.bv-main {
  padding-top: 106px;
}

.bv-shell {
  width: calc(100% - 40px);
  margin-inline: auto;
}

.bv-main figure,
.bv-main p {
  margin: 0;
}

.bv-main h1,
.bv-main h2,
.bv-main h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.bv-main h1 {
  font-size: clamp(28px, 8vw, 40px);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.bv-main h2 {
  margin-bottom: 32px;
  font-size: clamp(25px, 6.7vw, 34px);
  line-height: 1.5;
  letter-spacing: -0.025em;
}

.bv-main h3 {
  font-size: 20px;
  line-height: 1.6;
}

.bv-promo-frame {
  overflow: hidden;
  border: 1px solid rgba(21, 23, 40, 0.1);
  border-radius: 20px;
  background: var(--bv-tint);
}

.bv-main video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
}

.bv-promo-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 16px;
  color: #626767;
  font-size: 13px;
}

.bv-sound-button {
  min-height: 44px;
  padding: 8px 22px;
  border: 1px solid var(--bv-theme);
  border-radius: 999px;
  background: #fff;
  color: var(--bv-dark);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.bv-sound-button[aria-pressed="true"] {
  background: var(--bv-tint);
}

.bv-intro {
  padding-top: 56px;
}

.bv-intro p {
  margin-top: 24px;
}

/* 商品の正式名称（2026-09-15 ユーザー裁定「英語が９割わかる基本動詞図鑑」）。
   h1 の上に置く肩書き行。本文の呼称は従来どおり「図鑑」。 */
.bv-intro .bv-product-title {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bv-dark);
}

.bv-paths {
  display: grid;
  align-items: start;
  gap: 20px;
  padding-block: 56px;
}

.bv-button {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--bv-theme);
  border-radius: 999px;
  background: var(--bv-theme);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.6;
  text-align: center;
}

.bv-button:not([aria-disabled="true"]):hover {
  border-color: var(--bv-dark);
  background: var(--bv-dark);
  color: #fff;
}

.bv-button-secondary {
  background: #fff;
  color: var(--bv-dark);
}

.bv-free-path p {
  margin: 14px 4px 0;
  color: #626767;
  font-size: 14px;
}

.bv-free-path .bv-free-lead {
  color: #2f3535;
  font-weight: 700;
}

.bv-free-list {
  margin: 8px 4px 0;
  padding-left: 20px;
  color: #626767;
  font-size: 14px;
  line-height: 1.75;
}

.bv-free-list li + li {
  margin-top: 6px;
}

.bv-free-steps {
  margin: 8px 4px 0;
  padding-left: 22px;
  color: #626767;
  font-size: 14px;
  line-height: 1.75;
}

.bv-free-steps li + li {
  margin-top: 4px;
}

.bv-free-path .bv-free-note {
  margin-top: 8px;
}

.bv-section {
  padding-block: 64px;
  border-top: 1px dashed #d4d9d8;
}

.bv-tint {
  background: var(--bv-tint);
}

.bv-prose p + p {
  margin-top: 24px;
}

.bv-footnote {
  margin-top: 32px;
  color: #5b6360;
  font-size: 0.82rem;
  line-height: 1.8;
}

.bv-footnote a {
  color: var(--bv-dark);
  text-decoration: underline;
}

.bv-footnote cite {
  font-style: italic;
}

.bv-card {
  overflow: hidden;
  border: 1px solid rgba(21, 23, 40, 0.1);
  border-radius: 20px;
  background: #fff;
}

.bv-media-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.bv-core-card figcaption {
  padding: 20px;
  font-weight: 800;
}

.bv-main .bv-comparison {
  margin-top: 28px;
}

.bv-main .bv-shots {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px dashed #d4d9d8;
}

.bv-shots > figcaption {
  font-weight: 800;
}

/* 実際の語ページを内窓（iframe）で見せるカルーセル。
   枠の中は教材そのもの。読み込めない環境ではデモ版へのリンクだけを出す。 */
.bv-shots-hint {
  margin-top: 10px;
  color: #4a524f;
}

/* スマホでは内窓を画面幅いっぱい（左右16pxの余白のみ）にする。
   .bv-shell の内側余白を打ち消してトラックを画面幅まで広げ、
   1枠 = calc(100vw - 32px) を左端揃えでスナップさせる。 */
.bv-phones {
  display: grid;
  position: relative; /* JS が offsetLeft でスクロール位置を測るための基準 */
  grid-auto-flow: column;
  grid-auto-columns: calc(100vw - 32px);
  gap: 16px;
  width: 100vw;
  margin-top: 28px;
  margin-inline: calc(50% - 50vw);
  padding-inline: 16px;
  padding-bottom: 8px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: 16px;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.bv-phones::-webkit-scrollbar {
  display: none;
}

/* 全幅カルーセルでは start 揃え。center はトラック幅と枠幅が近いとき
   スナップ先が常に先頭になり、矢印を押しても動かなくなる（2026-09-17 実測）。 */
.bv-phone {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* 390x844 相当の内窓。幅は枠いっぱいを保ち、高さは 390:844 の比率で決める。
   画面の縦に収まらない場合だけ height で頭打ちにする（幅は縮めない）。
   はみ出したぶんは内窓（iframe）の中でスクロールさせる。 */
.bv-phone-frame {
  position: relative;
  width: 100%;
  height: min(calc((100vw - 32px) * 844 / 390), 844px, 78vh);
  overflow: hidden;
  border: 8px solid #151728;
  border-radius: 34px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(21, 23, 40, 0.18);
}

.bv-phone-screen {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}

/* 内窓が使えない環境向けの代替。iframe の下に敷き、
   iframe が描画されない・読み込めない場合だけ見える。 */
.bv-phone-fallback {
  display: grid;
  position: absolute;
  inset: 0;
  place-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
}

.bv-phone-fallback p {
  color: #4a524f;
  font-size: 14px;
}

.bv-phone-frame .bv-phone-screen {
  z-index: 1;
}

.bv-phone-label {
  margin-top: 12px;
  font-weight: 800;
  text-align: center;
}

.bv-phone-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 18px;
}

.bv-phone-arrow {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(21, 23, 40, 0.16);
  border-radius: 999px;
  background: #fff;
  color: var(--bv-dark);
  font-size: 18px;
  cursor: pointer;
}

.bv-phone-arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

.bv-phone-dots {
  display: flex;
  gap: 10px;
}

.bv-phone-dot {
  width: 11px;
  height: 11px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(21, 23, 40, 0.22);
  cursor: pointer;
}

.bv-phone-dot[aria-selected="true"] {
  background: var(--bv-theme);
}

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

/* 購入者限定メルマガの独立ブロック（2026-09-17） */
.bv-newsletter-sub {
  margin-top: 12px;
  color: var(--bv-theme);
  font-weight: 800;
}

.bv-main .bv-newsletter-sub + .bv-prose {
  margin-top: 28px;
}

.bv-newsletter-samples {
  margin-top: 36px;
  padding: 24px;
}

.bv-newsletter-samples h3 {
  font-size: 16px;
}

.bv-newsletter-subjects {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.bv-newsletter-subjects li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 7px 0;
  border-top: 1px solid #e6eceb;
}

.bv-newsletter-subjects li:first-child {
  border-top: 0;
}

.bv-nl-day {
  flex: 0 0 auto;
  min-width: 4.2em;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: #626767;
}

.bv-nl-subject {
  flex: 1 1 auto;
}

.bv-nl-arc {
  margin: 22px 0 0;
  font-size: 14px;
  font-weight: 700;
  color: #438F86;
}

.bv-newsletter-list > .bv-nl-arc:first-child {
  margin-top: 0;
}

.bv-newsletter-more {
  margin-top: 22px;
  border-top: 1px solid #e6eceb;
  padding-top: 16px;
}

.bv-newsletter-more > summary {
  cursor: pointer;
  font-weight: 700;
  color: #438F86;
}

.bv-newsletter-more > summary::marker {
  color: #438F86;
}

.bv-newsletter-more > .bv-newsletter-list {
  margin-top: 18px;
}

.bv-contents-list {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bv-contents-list li {
  padding: 24px;
}

.bv-contents-list h3 {
  display: flex;
  align-items: start;
  gap: 14px;
}

.bv-number {
  display: grid;
  flex: 0 0 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--bv-theme);
  color: #fff;
  font-size: 18px;
  line-height: 1;
}

.bv-contents-list p {
  margin-top: 18px;
}

.bv-audiences {
  display: grid;
  gap: 36px;
  margin-top: 56px;
}

.bv-audiences > div + div {
  padding-top: 32px;
  border-top: 1px dashed #d4d9d8;
}

.bv-audience-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.bv-audience-list li {
  padding-left: 1em;
  text-indent: -1em;
}

.bv-audience-list li + li {
  margin-top: 16px;
}

.bv-price-card {
  padding: 28px 24px;
}

.bv-product-name {
  font-weight: 800;
}

.bv-main .bv-price {
  margin-top: 24px;
}

.bv-price strong {
  display: block;
  margin-bottom: 12px;
  color: var(--bv-dark);
  font-size: 46px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.bv-terms {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px dashed #d4d9d8;
}

.bv-terms p + p {
  margin-top: 16px;
}

.bv-checkout .bv-button {
  max-width: 480px;
}

.bv-button[aria-disabled="true"] {
  border-color: #e0e5e4;
  background: #e0e5e4;
  color: #626767;
  cursor: not-allowed;
}

.bv-checkout [data-checkout-state] {
  margin-top: 20px;
  color: #626767;
  font-size: 14px;
}

.bv-faq {
  display: grid;
  gap: 16px;
}

.bv-faq summary {
  min-height: 56px;
  padding: 20px;
  font-weight: 800;
  cursor: pointer;
}

.bv-faq summary::marker {
  color: var(--bv-dark);
}

.bv-faq details[open] summary {
  border-bottom: 1px dashed #d4d9d8;
}

.bv-faq p {
  padding: 24px 20px;
}

.basic-verbs-page .site-footer {
  border-top: 1px dashed #d4d9d8;
}

@media (max-width: 860px) {
  .basic-verbs-page .global-nav {
    background: var(--bv-tint);
  }
}

@media (min-width: 900px) {
  .bv-shell {
    width: min(1040px, calc(100% - 80px));
  }

  .bv-main {
    padding-top: 122px;
  }

  .bv-intro {
    text-align: center;
  }

  .bv-intro h1,
  .bv-intro p {
    max-width: 800px;
    margin-inline: auto;
  }

  .bv-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding-block: 56px 72px;
  }

  .bv-section {
    padding-block: 80px;
  }

  .bv-prose p {
    max-width: 800px;
  }

  .bv-media-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* PC では3枠を並べる。横スクロールもスナップも不要になる。
     3枠 × 360px + gap 2本 = 1136px が必要なため、この節だけシェルより広く取る。 */
  .bv-phones {
    grid-auto-flow: initial;
    grid-auto-columns: initial;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    width: min(1136px, calc(100vw - 80px));
    margin-inline: auto;
    padding-inline: 0;
    overflow-x: visible;
    scroll-snap-type: none;
  }

  /* PC は枠の高さを縦横比だけで決める（画面高で頭打ちにしない）。 */
  .bv-phone-frame {
    height: auto;
    aspect-ratio: 390 / 844;
  }

  .bv-phone-nav {
    display: none;
  }

  .bv-contents-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bv-contents-list li,
  .bv-price-card {
    padding: 36px;
  }

  .bv-audiences {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
  }

  .bv-audiences > div + div {
    padding-top: 0;
    padding-left: 36px;
    border-top: 0;
    border-left: 1px dashed #d4d9d8;
  }

  .bv-faq summary,
  .bv-faq p {
    padding: 24px 28px;
  }
}

/* 購入者の声（reviews.json から描画、2026-09-24） */
.bv-reviews-lede {
  margin-top: 16px;
}

.bv-reviews-list {
  display: grid;
  gap: 16px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 768px) {
  .bv-reviews-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.bv-review {
  padding: 24px;
}

.bv-review[hidden] {
  display: none;
}

.bv-review-stars {
  color: #d4a017;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.bv-review-body {
  margin-top: 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.bv-review-meta {
  margin-top: 16px;
  color: #5b6360;
  font-size: 0.86rem;
}

.bv-reviews-more {
  margin-top: 24px;
}

.bv-reviews[hidden],
.bv-reviews-more[hidden] {
  display: none;
}

.bv-reviews-note {
  margin-top: 24px;
  color: #5b6360;
  font-size: 0.82rem;
}

/* Shared ten-verb book cover, 2026-09-24. */
.bv-intro { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 48px; align-items: center; text-align: left; }
.bv-intro .bv-intro-copy { min-width: 0; }
.bv-book-cover { display: block; width: 100%; height: auto; border-radius: 4px 10px 10px 4px; transform: perspective(1200px) rotateY(-5deg) rotate(1deg); box-shadow: 3px 3px 0 #d8dedb, 6px 6px 0 #edf0ec, 8px 8px 0 #b9c5bf, 0 12px 20px rgba(10,45,42,.2), 0 26px 38px -12px rgba(10,45,42,.38); }
@media (max-width: 700px) {
  .bv-intro { grid-template-columns: 1fr; gap: 30px; }
  .bv-book-cover { width: min(76%, 290px); margin: 0 auto 12px; }
}