/* ==========================================================
   読書ログ たどっきー LP専用CSS（自己完結・main.cssは読み込まない）
   ========================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand green */
  --tdk-green: #4a7c59;
  --tdk-green-dark: #3a6247;
  --tdk-green-deep: #2d4a37;
  --tdk-green-soft: #6f9b7d;
  --tdk-green-pale: #d7e5db;
  --tdk-green-wash: #eef5f0;

  /* Base / beige */
  --tdk-white: #ffffff;
  --tdk-beige: #f7f3e8;
  --tdk-beige-dark: #ece4d2;

  /* Text / accent */
  --tdk-ink: #2c3a31;
  --tdk-ink-sub: #5f6f64;
  --tdk-amber: #f09f3c;
  --tdk-amber-dark: #dd8a24;
  --tdk-line: #e2e8e3;

  /* Fonts */
  --ff-round: 'Zen Maru Gothic', sans-serif;
  --ff-ja: 'Zen Kaku Gothic New', system-ui, sans-serif;
  --ff-en: 'Outfit', sans-serif;

  /* Font sizes */
  --fs-hero: clamp(28px, 4vw, 44px);
  --fs-h2: clamp(26px, 3.6vw, 38px);
  --fs-h3: clamp(19px, 2.2vw, 24px);
  --fs-body: 16px;
  --fs-small: 13px;

  /* Radius / shadow */
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --shadow-card: 0 8px 28px rgba(45, 74, 55, .10);
  --shadow-btn: 0 6px 18px rgba(240, 159, 60, .35);

  --header-h: 56px;
}

@media (min-width: 960px) {
  :root { --header-h: 64px; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  margin: 0;
  font-family: var(--ff-ja);
  font-weight: 400;
  font-size: var(--fs-body);
  line-height: 1.9;
  color: var(--tdk-ink);
  background: var(--tdk-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--tdk-amber);
  outline-offset: 2px;
}

.container {
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: 20px;
}
@media (min-width: 960px) {
  .container { padding-inline: 24px; }
}

/* ---------- Scroll fade-in (js-fade) ---------- */
/* JS無効時は常に表示。html.js が付いた時のみ初期状態を透明化する */
html.js .js-fade {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.22, .61, .36, 1),
              transform .7s cubic-bezier(.22, .61, .36, 1);
}
html.js .js-fade.is-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html.js .js-fade {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ---------- Section head common ---------- */
.sec-head {
  text-align: center;
  margin-bottom: 36px;
}
@media (min-width: 960px) {
  .sec-head { margin-bottom: 48px; }
}
.sec-en {
  display: inline-block;
  font-family: var(--ff-en);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--tdk-green);
  position: relative;
  padding-bottom: 14px;
}
.sec-en::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  border-radius: 999px;
  background: var(--tdk-green);
}
.sec-en--white { color: rgba(255, 255, 255, .85); }
.sec-en--white::after { background: rgba(255, 255, 255, .6); }

.sec-ja {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: var(--fs-h2);
  line-height: 1.4;
  letter-spacing: .03em;
  color: var(--tdk-ink);
  margin-top: 12px;
}
.sec-lead {
  font-size: 15px;
  color: var(--tdk-ink-sub);
  margin-top: 12px;
}

/* ---------- Badge / pill ---------- */
.badge-pill {
  display: inline-block;
  background: var(--tdk-green-wash);
  color: var(--tdk-green);
  font-size: var(--fs-small);
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
}
.badge-pill--amber {
  background: rgba(240, 159, 60, .15);
  color: var(--tdk-amber-dark);
}

/* ---------- Buttons ---------- */
.btn-primary,
.btn-secondary,
.btn-ghost-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--ff-round);
  font-weight: 700;
  border-radius: 999px;
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--tdk-amber);
  color: var(--tdk-ink);
  padding: 16px 40px;
  font-size: 16px;
  box-shadow: var(--shadow-btn);
  transition: background .25s ease, transform .25s ease;
}
.btn-primary:hover {
  background: var(--tdk-amber-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background: #fff;
  border: 2px solid var(--tdk-green);
  color: var(--tdk-green);
  padding: 14px 38px;
  font-size: 16px;
  transition: background .25s ease;
}
.btn-secondary:hover { background: var(--tdk-green-wash); }

.btn-ghost-white {
  background: #fff;
  color: var(--tdk-green);
  padding: 18px 56px;
  font-size: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
  transition: transform .25s ease;
}
.btn-ghost-white:hover { transform: translateY(-2px); }

.btn-sm {
  padding: 10px 24px;
  font-size: 14px;
}

.btn-arrow { flex-shrink: 0; }

@media (max-width: 599px) {
  /* .sec-hero を付けて specificity を上げる（後方の .hero-cta { gap:16px } に order 負けしないため） */
  .sec-hero .hero-cta {
    flex-direction: row !important;
    gap: 10px;
    width: 100%;
  }
  .hero-cta .btn-primary,
  .hero-cta .btn-secondary {
    flex: 1;
    width: auto !important;
    max-width: none !important;
    padding: 14px 8px;
    font-size: 13px;
    text-align: center;
    justify-content: center;
  }
  .trial-copy .btn-ghost-white {
    width: 100%;
    max-width: 360px;
  }
}

/* ---------- Phone frame ---------- */
.phone-frame {
  width: 220px;
  margin-inline: auto;
  border-radius: 36px;
  border: 8px solid var(--tdk-ink);
  box-shadow: 0 20px 50px rgba(45, 74, 55, .18);
  overflow: hidden;
  background: #fff;
  flex-shrink: 0;
}
.phone-frame img,
.phone-frame picture { display: block; width: 100%; height: auto; }
@media (min-width: 960px) {
  .phone-frame { width: 270px; }
}

/* ==========================================================
   Header
   ========================================================== */
.lp-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  background: #c8c8c8;
  transition: background-color .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
}
.lp-header.is-scrolled {
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--tdk-line);
}
.lp-header-inner {
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
@media (min-width: 960px) {
  .lp-header-inner { padding-inline: 24px; }
}
.lp-header-brand {
  display: flex;
  align-items: center;
  gap: 6px;
}
.lp-header-pretext {
  font-size: 12px;
  color: var(--tdk-ink-sub);
  white-space: nowrap;
}
.lp-header-logo { height: 28px; width: auto; }
.lp-header-nav { display: none; }
@media (min-width: 960px) {
  .lp-header-nav { display: block; }
  .lp-header-nav ul { display: flex; gap: 32px; }
  .lp-header-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--tdk-ink);
    transition: color .2s ease;
  }
  .lp-header-nav a:hover { color: var(--tdk-green); }
}

/* ==========================================================
   ① Hero
   ========================================================== */
.sec-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--tdk-white);
  padding-top: calc(var(--header-h) + 24px);
  padding-bottom: 40px;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

/* Hero top label (SP: between header and video) */
.hero-top-label {
  display: none;
}
@media (max-width: 599px) {
  .hero-top-label {
    display: block;
    background-color: #c8c8c9;
    padding: calc(var(--header-h) + 12px) 20px 12px;
    text-align: center;
  }
  .hero-top-label p {
    display: inline-block;
    font-family: var(--ff-round);
    font-size: 13px;
    font-weight: 500;
    color: var(--tdk-green);
    border: 1.5px solid var(--tdk-green-pale);
    border-radius: 999px;
    padding: 6px 18px;
    background: rgba(255,255,255,0.7);
  }
}

/* Hero video background */
.hero-video-bg {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  overflow: hidden;
}
.hero-video-bg video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
@media (max-width: 599px) {
  .sec-hero {
    /* base の display:flex(row) が漏れると label とテキストが横並びになるため block 化 */
    display: block;
    /* 動画下のエリアは動画下端色 #cfced1 に厳密一致させる（グラデだと継ぎ目がずれる） */
    background: #cfced1;
    min-height: auto;
    padding-top: 0;
    padding-bottom: 24px;
  }
  .sec-hero::after {
    display: none;
  }
  .sec-hero .hero-content-delayed {
    padding-top: 8px;
    position: relative;
    z-index: 1;
  }
  .sec-hero .hero-grid {
    text-align: center !important;
    align-items: center !important;
    flex-direction: column !important;
  }
  .sec-hero .hero-copy {
    background-color: transparent;
    padding: 8px 16px 24px;
    text-align: center !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
  }
  .sec-hero .hero-copy * {
    text-align: center !important;
  }
  .sec-hero .hero-logo {
    margin-inline: auto !important;
  }
  .sec-hero .hero-logo-block {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .sec-hero .badge-pill {
    display: none;
  }
  .sec-hero .hero-top-label {
    position: relative;
    z-index: 2;
  }
  .hero-visual {
    display: none;
  }
  .hero-video-bg {
    /* SP はオーバーレイ背景ではなく通常フロー（label → 動画 → テキストの縦積み）にする */
    position: static;
    background-color: #c8c8c9;
  }
  .hero-video-bg .hero-video-pc {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
  }
}

/* Hero phone hide during wave (~5-7s in 8s loop) */
@media (min-width: 960px) {
  .hero-phone {
    animation: phoneHide 8s ease-in-out 1s infinite;
  }
}
@keyframes phoneHide {
  0%   { opacity: 1; }
  32%  { opacity: 1; }
  37%  { opacity: 0; }
  62%  { opacity: 0; }
  68%  { opacity: 1; }
  100% { opacity: 1; }
}

/* Hero content delayed entrance (1s after page load) */
.hero-content-delayed {
  opacity: 0;
  transform: translateY(24px);
  animation: heroContentReveal .8s ease-out 1s forwards;
}
@keyframes heroContentReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.sec-hero::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--tdk-beige));
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 48px;
  text-align: center;
  align-items: center;
}
@media (min-width: 960px) {
  .hero-grid {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    gap: 32px;
  }
  .hero-copy { flex: 0 0 55%; }
  .hero-visual { flex: 0 0 45%; display: flex; justify-content: center; }
}

.hero-logo-block { margin-top: 20px; }
.hero-logo { width: 240px; height: auto; margin-inline: auto; }
@media (min-width: 960px) {
  .hero-logo { width: 320px; margin-inline: 0; }
}
.hero-logo-caption {
  margin-top: 8px;
  font-size: 14px;
  color: var(--tdk-ink-sub);
  letter-spacing: .1em;
}

.hero-title {
  margin-top: 24px;
  font-family: var(--ff-round);
  font-weight: 900;
  font-size: var(--fs-hero);
  line-height: 1.4;
  letter-spacing: .03em;
  color: var(--tdk-ink);
}
.hero-title .mark {
  color: var(--tdk-green);
  background: linear-gradient(transparent 62%, var(--tdk-green-pale) 62%);
}

.hero-sub {
  margin-top: 20px;
  font-size: 16px;
  line-height: 2;
  color: var(--tdk-ink);
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
@media (min-width: 960px) {
  .hero-cta { flex-direction: row; align-items: center; }
}

.hero-store-note {
  margin-top: 16px;
  font-size: var(--fs-small);
  color: var(--tdk-ink-sub);
}

.hero-visual-inner {
  position: relative;
  width: 220px;
  padding-top: 40px;
}
.hero-phone {
  position: relative;
  z-index: 2;
  margin-left: auto;
}
@media (min-width: 960px) {
  .hero-visual-inner { width: 270px; padding-top: 30px; }
}

/* ==========================================================
   ② コンセプト（課題提起）
   ========================================================== */
.sec-problem {
  position: relative;
  background: var(--tdk-beige);
  padding: clamp(64px, 10vw, 96px) 0;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 600px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .problem-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
}

.problem-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 28px 22px;
  text-align: center;
}
.problem-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--tdk-green-wash);
  font-size: 24px;
  margin-bottom: 16px;
}
.problem-card h3 {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 15px;
  color: var(--tdk-ink);
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.problem-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--tdk-ink-sub);
}

.problem-arrow {
  width: 0;
  height: 0;
  margin: 32px auto;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-top: 24px solid var(--tdk-green);
  opacity: .5;
}

.problem-solution {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}
@media (min-width: 960px) {
  .problem-solution {
    flex-direction: row;
    text-align: left;
    padding: 40px;
    gap: 32px;
  }
}
.problem-solution-chara { width: 110px; height: auto; flex-shrink: 0; }
@media (min-width: 960px) {
  .problem-solution-chara { width: 140px; }
}
.problem-solution-text h3 {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.6;
  color: var(--tdk-ink);
}
.problem-solution-text .accent { color: var(--tdk-green); }
.problem-solution-text p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--tdk-ink-sub);
}

/* ==========================================================
   ③ 機能紹介
   ========================================================== */
.sec-features {
  background: var(--tdk-white);
  padding: clamp(64px, 10vw, 96px) 0;
}

.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 64px;
}
@media (min-width: 960px) {
  .feature-rows { gap: 88px; }
}

.feature-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
@media (min-width: 960px) {
  .feature-row {
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: 56px;
  }
  .feature-row--reverse { flex-direction: row-reverse; }
  .feature-visual { flex: 0 0 45%; display: flex; justify-content: center; }
  .feature-text { flex: 0 0 55%; }
}

.feature-en {
  display: inline-block;
  font-family: var(--ff-en);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: .22em;
  color: var(--tdk-green);
  text-transform: uppercase;
}
.feature-text h3 {
  margin-top: 10px;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: var(--fs-h3);
  color: var(--tdk-ink);
}
.feature-subcatch {
  margin-top: 10px;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 16px;
  color: var(--tdk-green);
}
.feature-body {
  margin-top: 12px;
  font-size: 15px;
  line-height: 2;
  color: var(--tdk-ink);
}
.feature-checklist {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
@media (min-width: 960px) {
  .feature-checklist { align-items: flex-start; }
}
.feature-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--tdk-ink);
}
.feature-checklist li .check-icon {
  flex-shrink: 0;
  margin-top: 4px;
}
.check-icon { color: var(--tdk-green); flex-shrink: 0; }

.feature-growth {
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
@media (min-width: 960px) {
  .feature-growth { justify-content: flex-start; }
}
.feature-growth img { width: 64px; height: 64px; }
.growth-arrow { font-size: 12px; color: var(--tdk-ink-sub); }
.feature-growth-caption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--tdk-ink-sub);
  text-align: center;
}
@media (min-width: 960px) {
  .feature-growth-caption { text-align: left; }
}

/* ==========================================================
   ④ 使用方法
   ========================================================== */
.sec-flow {
  background: var(--tdk-green-wash);
  padding: clamp(64px, 10vw, 96px) 0;
}

.flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  position: relative;
}
@media (min-width: 960px) {
  .flow-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
}

.step-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
}
@media (max-width: 959px) {
  .step-card { padding-left: 28px; border-left: 3px solid var(--tdk-green-pale); }
}
@media (min-width: 960px) {
  .step-card:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 10px solid var(--tdk-green-soft);
  }
}

.step-header {
  display: flex;
  align-items: center;
  gap: 12px;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tdk-green);
  color: #fff;
  font-family: var(--ff-en);
  font-weight: 600;
  font-size: 16px;
  flex-shrink: 0;
}
.step-header h3 {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 18px;
  color: var(--tdk-ink);
  margin: 0;
}
.step-photo {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
  margin-top: 16px;
}
.step-card p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--tdk-ink-sub);
}

.flow-note {
  margin-top: 32px;
  text-align: center;
  font-size: var(--fs-small);
  color: var(--tdk-ink-sub);
}

/* ==========================================================
   ⑤ 使用事例
   ========================================================== */
.sec-case {
  background: var(--tdk-white);
  padding: clamp(64px, 10vw, 96px) 0;
}

.case-card {
  max-width: 760px;
  margin-inline: auto;
  background: var(--tdk-beige);
  border-radius: var(--radius-lg);
  padding: 28px;
}
@media (min-width: 960px) {
  .case-card { padding: 48px; }
}
.case-name {
  margin-top: 16px;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 22px;
  color: var(--tdk-ink);
}
.case-body {
  margin-top: 16px;
  font-size: 15px;
  line-height: 2;
  color: var(--tdk-ink);
}
.case-divider {
  margin: 24px 0;
  border-top: 1px dashed var(--tdk-beige-dark);
}
.case-custom {
  font-size: 14px;
  color: var(--tdk-ink-sub);
  line-height: 1.9;
}

/* ==========================================================
   ⑥ 1ヶ月無料お試し
   ========================================================== */
.sec-trial {
  position: relative;
  overflow: hidden;
  background-color: var(--tdk-green);
  padding: 64px 0;
}
@media (min-width: 960px) {
  .sec-trial { padding: 88px 0; }
}
.trial-video-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.trial-video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.trial-video-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(45, 74, 55, .65);
}
.sec-trial .trial-inner {
  position: relative;
  z-index: 1;
}

/* ==========================================================
   3者視点（先生・生徒・保護者）
   ========================================================== */
.sec-value {
  background: var(--tdk-green-wash);
  padding: clamp(64px, 10vw, 96px) 0;
}
.value-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
@media (min-width: 960px) {
  .value-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}
.value-card {
  background: var(--tdk-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.value-photo {
  display: block;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
}
.value-role {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 20px;
  color: var(--tdk-green);
  margin-bottom: 12px;
}
.value-quote {
  font-size: 14px;
  color: var(--tdk-green-dark);
  margin-bottom: 12px;
  line-height: 1.7;
}
.value-card p:last-child {
  font-size: 15px;
  line-height: 1.9;
  color: var(--tdk-ink);
  text-align: left;
}
.value-closing {
  text-align: center;
  margin-top: 48px;
}
.value-bridge {
  font-size: 15px;
  color: var(--tdk-ink-sub);
  margin-bottom: 12px;
}
.value-catchcopy {
  font-family: var(--ff-round);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 36px);
  color: var(--tdk-green-dark);
  line-height: 1.4;
}
.value-sub {
  margin-top: 12px;
  font-size: 16px;
  color: var(--tdk-ink);
  line-height: 1.8;
}

/* ==========================================================
   開発者紹介
   ========================================================== */
.sec-developer {
  background: var(--tdk-white);
  padding: clamp(64px, 10vw, 96px) 0;
}
.developer-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--tdk-beige);
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
@media (min-width: 960px) {
  .developer-card { padding: 40px 36px; }
}
.developer-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
@media (min-width: 960px) {
  .developer-header {
    flex-direction: row;
    align-items: center;
    gap: 24px;
  }
}
.developer-photo {
  flex-shrink: 0;
}
.developer-photo img {
  width: 100%;
  max-width: 280px;
  height: auto;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  object-fit: cover;
  display: block;
}
@media (min-width: 960px) {
  .developer-photo img {
    width: 240px;
  }
}
.developer-name {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 22px;
  color: var(--tdk-ink);
}
.developer-role {
  display: block;
  font-family: var(--ff-ja);
  font-weight: 400;
  font-size: 13px;
  color: var(--tdk-ink-sub);
  margin-top: 4px;
}
.developer-bio {
  margin-top: 16px;
  font-size: 15px;
  line-height: 2;
  color: var(--tdk-ink);
}
.developer-bio:first-of-type {
  margin-top: 20px;
}
.developer-quote {
  margin: 20px 0;
  padding: 16px 20px;
  background: var(--tdk-green-wash);
  border-left: 4px solid var(--tdk-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.8;
  color: var(--tdk-green-dark);
}

.trial-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
@media (min-width: 960px) {
  .trial-inner { align-items: flex-start; text-align: left; padding-right: 180px; }
}
.trial-ja {
  margin-top: 12px;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: var(--fs-h2);
  line-height: 1.4;
  color: #fff;
}
.trial-body {
  margin-top: 16px;
  font-size: 16px;
  line-height: 2;
  color: rgba(255, 255, 255, .92);
}
.trial-copy .btn-ghost-white { margin-top: 32px; }
.trial-caption {
  margin-top: 16px;
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, .95);
}

/* セール価格ボックス */
.trial-price-box {
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 20px 0;
  text-align: center;
}
.trial-price-label {
  font-family: var(--ff-round);
  font-size: 14px;
  font-weight: 700;
  color: var(--tdk-amber);
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.trial-price-main {
  font-family: var(--ff-round);
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 900;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 8px;
}
.trial-price-old {
  text-decoration: line-through;
  opacity: .6;
  font-size: .7em;
}
.trial-price-sale {
  color: var(--tdk-amber);
}
.trial-price-unit {
  font-size: .5em;
  font-weight: 500;
  opacity: .8;
}
.trial-price-note {
  font-size: 13px;
  color: rgba(255, 255, 255, .85);
  margin: 0;
}

/* 一緒に育てよう */
.trial-community {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .2);
  text-align: center;
}
.trial-community-title {
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 17px;
  color: #fff;
  margin-bottom: 8px;
}
.trial-community-body {
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
  line-height: 1.9;
  margin: 0;
}

.trial-sp-video {
  display: block;
  margin: 24px auto;
  max-width: 400px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.trial-sp-video video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}
@media (min-width: 960px) {
  .trial-sp-video { display: none; }
}

/* ==========================================================
   ⑦ ダウンロード
   ========================================================== */
.sec-download {
  background: var(--tdk-white);
  padding: 56px 0 72px;
}

.download-cards {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
@media (min-width: 600px) {
  .download-cards { flex-direction: row; justify-content: center; gap: 32px; }
}

.download-card {
  background: var(--tdk-green-wash);
  border-radius: var(--radius);
  padding: 32px 40px;
  text-align: center;
  width: 100%;
  max-width: 280px;
}
.store-badge { margin-inline: auto; height: 56px; width: auto; }
.store-badge.is-grayscale { filter: grayscale(1); opacity: .55; }
.download-label {
  margin-top: 14px;
  font-size: var(--fs-small);
  font-weight: 700;
  color: var(--tdk-green);
}
.download-label--muted { color: var(--tdk-ink-sub); font-weight: 400; }

.download-note {
  margin-top: 32px;
  text-align: center;
  font-size: var(--fs-small);
  color: var(--tdk-ink-sub);
}

/* ==========================================================
   ⑧ フッター
   ========================================================== */
.lp-footer {
  background: var(--tdk-green-deep);
  color: rgba(255, 255, 255, .72);
  padding: 56px 0 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.footer-logo-card {
  background: #fff;
  border-radius: 12px;
  padding: 10px 18px;
  display: inline-flex;
}
.footer-app-name {
  margin-top: 12px;
  color: #fff;
  font-family: var(--ff-round);
  font-weight: 700;
  font-size: 15px;
}
.footer-company {
  margin-top: 24px;
  font-size: 14px;
  line-height: 2;
}
.footer-company a { color: rgba(255, 255, 255, .85); }
.footer-company a:hover { color: #fff; }

.footer-links { margin-top: 24px; width: 100%; }
.footer-links ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
}
.footer-links a:hover { color: #fff; }

@media (min-width: 600px) {
  .footer-links ul { flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 8px 24px; }
  .footer-links a { min-height: auto; }
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .15);
  width: 100%;
}
.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, .75);
  text-align: center;
}

/* ==========================================================
   PC段落修正
   ========================================================== */
/* reduced-motion: アニメーション無効時にコンテンツを即表示 */
@media (prefers-reduced-motion: reduce) {
  .hero-content-delayed {
    opacity: 1;
    transform: none;
    animation: none;
  }
  .js-fade {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

br.sp-only { display: none; }
@media (max-width: 599px) {
  br.sp-only { display: inline; }
}

.problem-title {
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.feature-text {
  letter-spacing: 0;
}