/* lp.css
   マーケティングLP（/lp）のページエントリーポイント。
   トークンは .lp-page にスコープし、:root には追加しない。
   Marketing LP (/lp) page entry point.
   Tokens are scoped to .lp-page; nothing is added to :root. */

.lp-page {
  /* 深緑インク×白磁×若葉のグリーン基調パレット
     Green-anchored palette: deep green ink, porcelain white, young-leaf green */
  --lp-ink: #182d1e;
  --lp-paper: #f9fbf8;
  --lp-paper-tint: #eef4ec;
  --lp-green: #50a35b;
  --lp-green-deep: #367540;
  --lp-green-soft: #e3efe3;
  --lp-text: #26362b;
  --lp-muted: #5c6b60;
  --lp-line: rgba(24, 45, 30, 0.12);
  --lp-card: #ffffff;
  --lp-header-bg: rgba(249, 251, 248, 0.88);
  --lp-font-display: "Shippori Mincho", "Noto Serif JP", serif;
  --lp-shadow-card: 0 16px 40px rgba(24, 45, 30, 0.1);
  --lp-max-width: 1080px;

  background: var(--lp-paper);
  color: var(--lp-text);
  font-size: 1rem;
  line-height: var(--leading-relaxed);
  min-height: 100vh;
}

:root[data-theme="dark"] .lp-page {
  --lp-ink: #0b1610;
  --lp-paper: #101b13;
  --lp-paper-tint: #16241a;
  --lp-green: #5cb267;
  --lp-green-deep: #7ac785;
  --lp-green-soft: rgba(92, 178, 103, 0.16);
  --lp-text: #e2ece4;
  --lp-muted: #9db2a2;
  --lp-line: rgba(226, 236, 228, 0.16);
  --lp-card: #16241a;
  --lp-header-bg: rgba(16, 27, 19, 0.88);
  --lp-shadow-card: 0 16px 40px rgba(0, 0, 0, 0.4);
}

/* ---- 共通パーツ / Shared building blocks ---- */

.lp-container {
  margin: 0 auto;
  max-width: var(--lp-max-width);
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.lp-section {
  padding-block: clamp(4rem, 9vw, 6.5rem);
}

.lp-eyebrow {
  color: var(--lp-green-deep);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.14em;
  margin-bottom: var(--space-3);
}

.lp-heading {
  font-family: var(--lp-font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.35;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.lp-page a {
  color: inherit;
  text-decoration: none;
}

.lp-page :focus-visible {
  border-radius: var(--radius-s);
  outline: 2px solid var(--lp-green);
  outline-offset: 3px;
}

/* 改行をスマホ表示のみに限定する / Line break shown only on small screens */
.lp-br-sp {
  display: none;
}

/* ---- ボタン / Buttons ---- */

.lp-btn {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  display: inline-flex;
  font-size: var(--text-base);
  font-weight: 700;
  gap: var(--space-2);
  justify-content: center;
  min-height: var(--tap-target-min);
  padding: 0.6rem 1.4rem;
  transition: background-color var(--transition-normal), color var(--transition-normal),
    border-color var(--transition-normal), transform var(--transition-fast);
}

.lp-btn--large {
  font-size: var(--text-lg);
  padding: 0.8rem 2rem;
}

.lp-page .lp-btn--primary {
  background: var(--lp-green);
  box-shadow: 0 10px 24px rgba(80, 163, 91, 0.32);
  color: #ffffff;
}

.lp-page .lp-btn--primary:hover {
  background: var(--lp-green-deep);
  transform: translateY(-1px);
}

:root[data-theme="dark"] .lp-page .lp-btn--primary {
  color: #0b1610;
}

:root[data-theme="dark"] .lp-page .lp-btn--primary:hover {
  background: var(--lp-green);
  filter: brightness(1.1);
}

.lp-page .lp-btn--ghost {
  border-color: var(--lp-line);
  color: var(--lp-text);
}

.lp-page .lp-btn--ghost:hover {
  background: var(--lp-green-soft);
  border-color: var(--lp-green);
}

.lp-page .lp-btn--inverse {
  background: var(--lp-paper);
  color: var(--lp-ink);
}

.lp-page .lp-btn--inverse:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

/* ---- ヘッダー / Header ---- */

.lp-header {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: var(--lp-header-bg);
  border-bottom: 1px solid var(--lp-line);
  inset-inline: 0;
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.lp-header__inner {
  align-items: center;
  display: flex;
  gap: var(--space-6);
  min-height: 68px;
}

.lp-header__brand {
  align-items: center;
  display: inline-flex;
  gap: var(--space-2);
}

.lp-header__brand-mark {
  align-items: center;
  border-radius: var(--radius-sm);
  display: inline-flex;
  height: 30px;
  justify-content: center;
  overflow: hidden;
  width: 30px;
}

.lp-header__brand-mark img,
.lp-feature-card__icon img {
  display: block;
  height: 100%;
  object-fit: contain;
  width: 100%;
}

.lp-header__brand-name {
  font-family: var(--lp-font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.lp-header__nav {
  display: flex;
  gap: var(--space-6);
  margin-inline: auto;
}

.lp-header__nav a {
  color: var(--lp-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.lp-header__nav a:hover {
  color: var(--lp-green-deep);
}

.lp-header__actions {
  align-items: center;
  display: flex;
  gap: var(--space-3);
  margin-left: auto;
}

/* ---- ヒーロー / Hero ---- */

.lp-hero {
  background:
    radial-gradient(60% 80% at 85% 10%, rgba(80, 163, 91, 0.12), transparent 70%),
    var(--lp-paper);
  overflow: hidden;
  padding-block: clamp(4rem, 9vw, 7rem);
  position: relative;
}

/* 縦書きのキッカー：このLPの和文らしさを担う小さなアクセント
   Vertical-writing kicker: a small accent that carries the page's Japanese character */
.lp-hero__kicker {
  color: var(--lp-green-deep);
  font-family: var(--lp-font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.42em;
  opacity: 0.55;
  position: absolute;
  right: clamp(0.75rem, 2.5vw, 2rem);
  top: clamp(4rem, 9vw, 7rem);
  writing-mode: vertical-rl;
}

.lp-hero__inner {
  align-items: center;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
  grid-template-columns: minmax(0, 7fr) minmax(0, 6fr);
}

.lp-hero__title {
  font-family: var(--lp-font-display);
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin-bottom: var(--space-6);
}

.lp-hero__lead {
  color: var(--lp-muted);
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  margin-bottom: var(--space-8);
  max-width: 34em;
}

.lp-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.lp-hero__trust {
  color: var(--lp-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: var(--text-sm);
  gap: var(--space-2) var(--space-5);
  list-style: none;
}

.lp-hero__trust li {
  align-items: center;
  display: inline-flex;
  gap: var(--space-1);
}

.lp-hero__trust li::before {
  color: var(--lp-green);
  content: "✓";
  font-weight: 700;
}

/* ---- 会話デモ（シグネチャ）/ Conversation demo (signature) ---- */

.lp-demo__window {
  background: var(--lp-card);
  border: 1px solid var(--lp-line);
  border-radius: var(--radius-l);
  box-shadow: var(--lp-shadow-card);
  overflow: hidden;
}

.lp-demo__titlebar {
  align-items: center;
  border-bottom: 1px solid var(--lp-line);
  display: flex;
  gap: 6px;
  padding: 0.7rem 1rem;
}

.lp-demo__dot {
  background: var(--lp-line);
  border-radius: 50%;
  height: 9px;
  width: 9px;
}

.lp-demo__title {
  color: var(--lp-muted);
  font-size: var(--text-2xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-left: var(--space-2);
}

.lp-demo__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.lp-demo__msg {
  border-radius: var(--radius-m);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 88%;
  padding: 0.7rem 0.95rem;
}

.lp-demo__msg--user {
  align-self: flex-end;
  background: var(--lp-green-deep);
  border-bottom-right-radius: var(--radius-xs);
  color: #ffffff;
}

:root[data-theme="dark"] .lp-page .lp-demo__msg--user {
  color: #0b1610;
}

.lp-demo__msg--ai {
  align-self: flex-start;
  background: var(--lp-paper-tint);
  border-bottom-left-radius: var(--radius-xs);
}

.lp-demo__msg--ai p {
  margin-bottom: var(--space-2);
}

.lp-demo__msg--ai ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
}

.lp-demo__msg--ai li {
  padding-left: 1.1em;
  position: relative;
}

.lp-demo__msg--ai li::before {
  color: var(--lp-green);
  content: "・";
  left: 0;
  position: absolute;
}

.lp-demo__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.lp-demo__chip {
  align-items: center;
  border-radius: var(--radius-full);
  display: inline-flex;
  font-size: var(--text-2xs);
  font-weight: 600;
  gap: var(--space-1);
  padding: 0.35rem 0.8rem;
}

.lp-demo__chip--memo {
  background: var(--lp-green-soft);
  color: var(--lp-green-deep);
}

.lp-demo__chip--share {
  border: 1px dashed var(--lp-green);
  color: var(--lp-green-deep);
}

/* デモの登場アニメーション（reduced-motion時は無効）
   Demo entrance animation (disabled under reduced motion) */
@media (prefers-reduced-motion: no-preference) {
  .lp-demo__msg,
  .lp-demo__actions {
    animation: lp-rise 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .lp-demo__msg--user {
    animation-delay: 0.3s;
  }

  .lp-demo__msg--ai {
    animation-delay: 1s;
  }

  .lp-demo__actions {
    animation-delay: 1.9s;
  }

  .lp-hero__copy {
    animation: lp-rise 0.7s ease-out both;
  }
}

@keyframes lp-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- 機能紹介 / Features ---- */

.lp-features {
  background: var(--lp-paper-tint);
}

.lp-features__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lp-feature-card {
  background: var(--lp-card);
  border: 1px solid var(--lp-line);
  border-radius: var(--radius-l);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: clamp(1.5rem, 3vw, 2rem);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.lp-feature-card:hover {
  box-shadow: var(--lp-shadow-card);
  transform: translateY(-3px);
}

.lp-feature-card__icon {
  align-items: center;
  background: var(--lp-green-soft);
  border-radius: var(--radius-m);
  color: var(--lp-green-deep);
  display: inline-flex;
  font-size: var(--icon-size-md);
  height: 46px;
  justify-content: center;
  width: 46px;
}

.lp-feature-card__name {
  color: var(--lp-green-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
}

.lp-feature-card__title {
  font-family: var(--lp-font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.4;
}

.lp-feature-card__description {
  color: var(--lp-muted);
  flex-grow: 1;
  font-size: var(--text-sm);
}

.lp-page .lp-feature-card__link {
  align-items: center;
  color: var(--lp-green-deep);
  display: inline-flex;
  font-size: var(--text-sm);
  font-weight: 700;
  gap: var(--space-2);
}

.lp-page .lp-feature-card__link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---- 利用フロー / Flow ---- */

.lp-flow__list {
  counter-reset: lp-step;
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  list-style: none;
}

.lp-flow__step {
  border-top: 2px solid var(--lp-green);
  padding-top: var(--space-5);
  position: relative;
}

.lp-flow__number {
  color: var(--lp-green);
  display: block;
  font-family: var(--lp-font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  margin-bottom: var(--space-3);
}

.lp-flow__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.lp-flow__description {
  color: var(--lp-muted);
  font-size: var(--text-sm);
}

/* ---- FAQ ---- */

.lp-faq {
  background: var(--lp-paper-tint);
}

.lp-faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin: 0;
  max-width: 760px;
}

.lp-faq__item {
  background: var(--lp-card);
  border: 1px solid var(--lp-line);
  border-radius: var(--radius-m);
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
}

.lp-faq__question {
  font-size: var(--text-md);
  font-weight: 700;
  margin-bottom: var(--space-2);
  padding-left: 1.6em;
  position: relative;
}

.lp-faq__question::before {
  color: var(--lp-green);
  content: "Q";
  font-family: var(--lp-font-display);
  left: 0;
  position: absolute;
}

.lp-faq__answer {
  color: var(--lp-muted);
  font-size: var(--text-sm);
  margin: 0;
  padding-left: 1.85em;
}

/* ---- 最終CTA / Final CTA ---- */

.lp-final-cta {
  background: var(--lp-ink);
  color: #f2f7f2;
  padding-block: clamp(4.5rem, 10vw, 7rem);
}

.lp-final-cta__inner {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  text-align: center;
}

.lp-final-cta__title {
  font-family: var(--lp-font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.lp-final-cta__note {
  color: rgba(242, 247, 242, 0.72);
  font-size: var(--text-sm);
}

/* ---- フッター / Footer ---- */

.lp-footer {
  border-top: 1px solid var(--lp-line);
  padding-block: var(--space-8);
}

.lp-footer__inner {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-8);
}

.lp-footer__brand {
  font-family: var(--lp-font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.lp-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}

.lp-footer__nav a {
  color: var(--lp-muted);
  font-size: var(--text-sm);
}

.lp-footer__nav a:hover {
  color: var(--lp-green-deep);
}

.lp-footer__copyright {
  color: var(--lp-muted);
  font-size: var(--text-xs);
  margin-left: auto;
}

/* ---- レスポンシブ / Responsive ---- */

@media (max-width: 992px) {
  .lp-hero__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .lp-demo {
    margin-inline: auto;
    max-width: 560px;
    width: 100%;
  }

  .lp-hero__kicker {
    display: none;
  }

  .lp-features__grid,
  .lp-flow__list {
    grid-template-columns: minmax(0, 1fr);
    max-width: 560px;
  }
}

@media (max-width: 768px) {
  .lp-header__nav {
    display: none;
  }

  .lp-header__actions .lp-btn--ghost {
    display: none;
  }

  .lp-br-sp {
    display: inline;
  }

  .lp-hero__cta .lp-btn {
    flex-grow: 1;
  }

  .lp-footer__copyright {
    margin-left: 0;
  }
}