/* ==========================================================================
   Roompia LP - デザインシステム（仮）
   Apple の製品ページを参考にした巨大タイポ + 余白 + ダーク/ライト交互構成
   ========================================================================== */

:root {
  /* カラー */
  --c-black: #000000;
  --c-ink: #0b0b0d;        /* ダークセクション背景 */
  --c-ink-2: #16161a;      /* ダークセクション上のカード */
  --c-paper: #f5f5f7;      /* ライトセクション背景 */
  --c-white: #ffffff;
  --c-text: #1d1d1f;       /* ライト上の本文 */
  --c-text-invert: #f5f5f7;/* ダーク上の本文 */
  --c-muted: #86868b;      /* ライト上の補助テキスト */
  --c-muted-dark: #a1a1a6; /* ダーク上の補助テキスト */
  --c-line: #d2d2d7;
  --c-line-dark: #2a2a2e;
  --c-blue: #0071e3;       /* ボタン */
  --c-blue-light: #2997ff; /* ダーク上のリンク */

  /* アクセントグラデーション */
  --grad-accent: linear-gradient(100deg, #5ac8fa 0%, #4b7bec 45%, #a855f7 100%);
  --grad-glow: radial-gradient(60% 50% at 50% 40%, rgba(75, 123, 236, 0.35) 0%, rgba(168, 85, 247, 0.16) 45%, rgba(0, 0, 0, 0) 72%);

  /* レイアウト */
  --w-wide: 1180px;
  --w-text: 760px;
  --r-card: 22px;
  --r-card-lg: 30px;

  /* タイポ */
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro JP", "Inter",
          "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
          "Yu Gothic", Meiryo, sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--c-black);
  color: var(--c-text-invert);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--c-blue-light); text-decoration: none; }

/* --------------------------------------------------------------------------
   共通レイアウト
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap--text { max-width: var(--w-text); }

.sec { padding: clamp(88px, 13vw, 176px) 0; position: relative; }
.sec--dark { background: var(--c-ink); color: var(--c-text-invert); }
.sec--black { background: var(--c-black); color: var(--c-text-invert); }
.sec--light { background: var(--c-paper); color: var(--c-text); }
.sec--tight { padding-top: clamp(56px, 8vw, 96px); }

/* --------------------------------------------------------------------------
   タイポグラフィ
   -------------------------------------------------------------------------- */
.t-eyebrow {
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0 0 12px;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.t-display {
  font-size: clamp(44px, 8.6vw, 104px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
  margin: 0;
}

.t-h2 {
  font-size: clamp(32px, 5.4vw, 68px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.028em;
  margin: 0 0 24px;
}

.t-h3 {
  font-size: clamp(21px, 2.4vw, 28px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin: 0 0 10px;
}

.t-lead {
  font-size: clamp(18px, 2.1vw, 26px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--c-muted-dark);
  margin: 0;
}
.sec--light .t-lead { color: var(--c-muted); }

.t-body {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.68;
  color: var(--c-muted-dark);
  margin: 0;
}
.sec--light .t-body { color: var(--c-muted); }

.t-grad {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.t-center { text-align: center; }

/* --------------------------------------------------------------------------
   ボタン / リンク
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 0 30px;
  border: 0;
  border-radius: 999px;
  font-family: inherit;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.005em;
  cursor: pointer;
  transition: background-color 0.25s var(--ease), transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.btn--fill {
  background: var(--c-blue);
  color: #fff;
}
.btn--fill:hover { background: #0077ed; transform: translateY(-1px); }
.btn--light {
  background: var(--c-white);
  color: var(--c-text);
}
.btn--light:hover { transform: translateY(-1px); opacity: 0.9; }
.btn--outline {
  background: transparent;
  color: var(--c-blue-light);
  box-shadow: inset 0 0 0 1.5px currentColor;
}
.btn--outline:hover { background: rgba(41, 151, 255, 0.1); }

/* Apple風のシェブロン付きテキストリンク */
.chev {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: clamp(16px, 1.8vw, 21px);
  font-weight: 400;
  color: var(--c-blue-light);
}
.sec--light .chev { color: var(--c-blue); }
.chev::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.8px solid currentColor;
  border-bottom: 1.8px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.25s var(--ease);
}
.chev:hover { text-decoration: underline; }
.chev:hover::after { transform: rotate(-45deg) translate(2px, 2px); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}
.actions--center { justify-content: center; }

/* --------------------------------------------------------------------------
   仮コンテンツ告知バー
   -------------------------------------------------------------------------- */
.notice {
  background: #1c1c1e;
  border-bottom: 1px solid var(--c-line-dark);
  color: var(--c-muted-dark);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  text-align: center;
  padding: 9px 20px;
}
.notice strong { color: #e8e8ed; font-weight: 600; }

/* --------------------------------------------------------------------------
   グローバルナビ（半透明 + blur）
   -------------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}
.nav__inner {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__logo {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #f5f5f7;
}
.nav__logo em {
  font-style: normal;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 40px);
}
.nav__menu a {
  font-size: 13px;
  font-weight: 400;
  color: #d6d6db;
  opacity: 0.86;
  transition: opacity 0.2s var(--ease);
}
.nav__menu a:hover { opacity: 1; }
.nav__cta {
  font-size: 13px !important;
  font-weight: 500 !important;
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--c-blue);
  color: #fff !important;
  opacity: 1 !important;
}
.nav__cta:hover { background: #0077ed; }

/* --------------------------------------------------------------------------
   ヒーロー
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: min(92vh, 900px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(80px, 14vh, 150px) 0 clamp(70px, 12vh, 120px);
  background: var(--c-black);
  overflow: hidden;
}
.hero__glow {
  position: absolute;
  inset: -20% -10% auto;
  height: 110%;
  background: var(--grad-glow);
  pointer-events: none;
  animation: glow-drift 14s ease-in-out infinite alternate;
}
@keyframes glow-drift {
  from { transform: translate3d(-3%, 0, 0) scale(1); }
  to   { transform: translate3d(3%, 3%, 0) scale(1.08); }
}
.hero__inner { position: relative; z-index: 1; }
.hero__badge {
  display: inline-block;
  padding: 6px 14px;
  margin-bottom: clamp(22px, 3vw, 32px);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #e8e8ed;
}
.hero__title { margin-bottom: clamp(22px, 3vw, 34px); }
.hero__lead {
  max-width: 640px;
  margin: 0 auto clamp(30px, 4vw, 46px);
}
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 1;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(245, 245, 247, 0.42);
}
.hero__scroll span {
  display: block;
  width: 1px;
  height: 34px;
  margin: 10px auto 0;
  background: linear-gradient(to bottom, rgba(245,245,247,0.5), rgba(245,245,247,0));
  animation: scroll-cue 2.2s ease-in-out infinite;
}
@keyframes scroll-cue {
  0%, 100% { transform: scaleY(0.4); opacity: 0.3; transform-origin: top; }
  50%      { transform: scaleY(1);   opacity: 1;   transform-origin: top; }
}

/* --------------------------------------------------------------------------
   デバイスモックアップ（CSSのみで作った端末フレーム）
   -------------------------------------------------------------------------- */
.showcase {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: clamp(40px, 7vw, 100px);
  align-items: center;
}
.showcase__copy .t-lead { margin-bottom: 28px; }

.device-stage {
  display: flex;
  justify-content: center;
  perspective: 1400px;
}
.device {
  position: relative;
  width: min(330px, 82vw);
  aspect-ratio: 330 / 672;
  padding: 11px;
  border-radius: 56px;
  background: linear-gradient(150deg, #3a3a3f 0%, #17171a 26%, #08080a 55%, #2e2e33 100%);
  box-shadow:
    0 2px 4px rgba(255, 255, 255, 0.12) inset,
    0 40px 90px -20px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(255, 255, 255, 0.06);
  transform: rotateY(-11deg) rotateX(3deg);
  transition: transform 1s var(--ease);
}
.device:hover { transform: rotateY(-4deg) rotateX(1deg) translateY(-6px); }
.device__screen {
  position: relative;
  height: 100%;
  border-radius: 46px;
  overflow: hidden;
  background: linear-gradient(180deg, #f7f8fb 0%, #eef0f6 100%);
  color: var(--c-text);
}
.device__island {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 92px;
  height: 26px;
  border-radius: 999px;
  background: #000;
  z-index: 5;
}

/* 端末内アプリUI（ダミー） */
.app { height: 100%; display: flex; flex-direction: column; }
.app__status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 26px 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #1d1d1f;
}
.app__status-icons { display: flex; gap: 4px; align-items: center; }
.app__status-icons i {
  display: block;
  width: 13px;
  height: 9px;
  border-radius: 2px;
  background: #1d1d1f;
  opacity: 0.75;
}
.app__status-icons i:last-child { width: 18px; border-radius: 3px; }

.app__head {
  padding: 22px 20px 12px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.app__head h4 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.app__head p {
  margin: 2px 0 0;
  font-size: 11px;
  color: var(--c-muted);
}
.app__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--grad-accent);
  flex: 0 0 auto;
}

.app__body { flex: 1; overflow: hidden; padding: 0 14px; }

.app__hero-card {
  border-radius: 18px;
  padding: 16px 18px;
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 10px 22px -8px rgba(75, 123, 236, 0.6);
}
.app__hero-card small { font-size: 10px; opacity: 0.9; letter-spacing: 0.04em; }
.app__hero-card strong {
  display: block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-top: 2px;
}
.app__hero-card span { font-size: 11px; opacity: 0.92; }

.app__label {
  margin: 16px 6px 8px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.app__row {
  display: flex;
  align-items: center;
  gap: 11px;
  background: #fff;
  border-radius: 14px;
  padding: 11px 12px;
  margin-bottom: 7px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
.app__row-icon {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 13px;
}
.app__row-icon--a { background: #e5f0ff; color: #0071e3; }
.app__row-icon--b { background: #fdeee2; color: #e8833a; }
.app__row-icon--c { background: #e6f7ee; color: #1c9e5f; }
.app__row-text { min-width: 0; flex: 1; }
.app__row-text b {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.app__row-text span {
  font-size: 10.5px;
  color: var(--c-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}
.app__row-time { font-size: 10px; color: var(--c-muted); flex: 0 0 auto; }

.app__tabs {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 9px 6px 16px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(0, 0, 0, 0.07);
}
.app__tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 9px;
  color: var(--c-muted);
}
.app__tab i {
  width: 17px;
  height: 17px;
  border-radius: 5px;
  background: currentColor;
  opacity: 0.55;
  display: block;
}
.app__tab--on { color: var(--c-blue); font-weight: 600; }
.app__tab--on i { opacity: 1; }

.caption {
  margin: 26px 0 0;
  font-size: 13px;
  color: rgba(245, 245, 247, 0.45);
  text-align: center;
}
.sec--light .caption { color: var(--c-muted); }

/* --------------------------------------------------------------------------
   ベントーグリッド（機能紹介）
   -------------------------------------------------------------------------- */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.bento__item {
  background: var(--c-white);
  border-radius: var(--r-card-lg);
  padding: clamp(26px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 280px;
  overflow: hidden;
  position: relative;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.sec--dark .bento__item,
.sec--black .bento__item {
  background: var(--c-ink-2);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07);
}
.bento__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -18px rgba(0, 0, 0, 0.28);
}
.bento__item--wide { grid-column: span 2; }
.bento__item--tall { grid-row: span 2; }
.bento__item--accent {
  background: var(--grad-accent);
  color: #fff;
}
.bento__item--accent .t-body { color: rgba(255, 255, 255, 0.88); }

.bento__num {
  font-size: clamp(46px, 6vw, 78px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 6px;
}
.bento__glyph {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: auto;
  background: rgba(0, 113, 227, 0.1);
  color: var(--c-blue);
}
.sec--dark .bento__glyph {
  background: rgba(41, 151, 255, 0.14);
  color: var(--c-blue-light);
}
.bento__item--accent .bento__glyph {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

/* --------------------------------------------------------------------------
   数値バンド
   -------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(32px, 5vw, 64px);
  text-align: center;
}
.stats__num {
  font-size: clamp(46px, 7.5vw, 96px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stats__num small { font-size: 0.42em; font-weight: 600; letter-spacing: -0.01em; }
.stats__label {
  margin: 14px 0 0;
  font-size: clamp(13px, 1.4vw, 16px);
  color: var(--c-muted-dark);
}

/* --------------------------------------------------------------------------
   ステップ
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}
.sec--dark .steps, .sec--black .steps { border-color: var(--c-line-dark); }
.steps li {
  counter-increment: step;
  padding: clamp(28px, 3.4vw, 44px) clamp(20px, 2.6vw, 36px) clamp(28px, 3.4vw, 44px) 0;
  border-right: 1px solid var(--c-line);
}
.sec--dark .steps li, .sec--black .steps li { border-color: var(--c-line-dark); }
.steps li:last-child { border-right: 0; }
.steps li::before {
  content: "0" counter(step);
  display: block;
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 16px;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --------------------------------------------------------------------------
   課題リスト
   -------------------------------------------------------------------------- */
.problems {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 clamp(28px, 5vw, 72px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.problems li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line-dark);
  font-size: clamp(15px, 1.7vw, 19px);
  letter-spacing: -0.01em;
}
.sec--light .problems li { border-color: var(--c-line); }
.problems li::before {
  content: "";
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border-radius: 50%;
  background:
    linear-gradient(#fff, #fff) center/2px 9px no-repeat,
    linear-gradient(#fff, #fff) center/9px 2px no-repeat,
    rgba(255, 255, 255, 0.16);
  transform: rotate(45deg);
}
.sec--light .problems li::before {
  background:
    linear-gradient(#1d1d1f, #1d1d1f) center/2px 9px no-repeat,
    linear-gradient(#1d1d1f, #1d1d1f) center/9px 2px no-repeat,
    rgba(0, 0, 0, 0.08);
}

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq { max-width: var(--w-text); margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--c-line);
  padding: 4px 0;
}
.sec--dark .faq details { border-color: var(--c-line-dark); }
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 2px;
  font-size: clamp(16px, 1.9vw, 21px);
  font-weight: 500;
  letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  background:
    linear-gradient(currentColor, currentColor) center/1.8px 15px no-repeat,
    linear-gradient(currentColor, currentColor) center/15px 1.8px no-repeat;
  color: var(--c-blue);
  transition: transform 0.3s var(--ease);
}
.faq details[open] summary::after { transform: rotate(135deg); }
.faq__answer { padding: 0 2px 26px; }

/* --------------------------------------------------------------------------
   CTA
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  padding: clamp(88px, 13vw, 168px) 0;
  background: var(--c-black);
  text-align: center;
  overflow: hidden;
}
.cta__glow {
  position: absolute;
  inset: -30% 0 auto;
  height: 150%;
  background: var(--grad-glow);
  pointer-events: none;
}
.cta__inner { position: relative; z-index: 1; }

/* --------------------------------------------------------------------------
   フォーム
   -------------------------------------------------------------------------- */
.form {
  max-width: 620px;
  margin: 0 auto;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--c-muted-dark);
  margin-bottom: 7px;
}
.sec--light .field label { color: var(--c-muted); }
.field .req { color: #ff6b6b; margin-left: 5px; font-size: 11px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 15px 17px;
  border: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  color: var(--c-text-invert);
  font-family: inherit;
  font-size: 16px;
  letter-spacing: -0.005em;
  transition: box-shadow 0.2s var(--ease), background-color 0.2s var(--ease);
}
.field textarea { min-height: 140px; resize: vertical; line-height: 1.6; }
.field input::placeholder, .field textarea::placeholder { color: rgba(245, 245, 247, 0.34); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.09);
  box-shadow: inset 0 0 0 2px var(--c-blue-light);
}
.field select option { color: #1d1d1f; }
.form__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(245, 245, 247, 0.45);
  margin: 0 0 26px;
}
.form__submit { text-align: center; }

.form__done {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form__done.is-shown { display: block; }
.form__done-mark {
  width: 58px;
  height: 58px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--grad-accent);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 26px;
}

/* --------------------------------------------------------------------------
   フッター
   -------------------------------------------------------------------------- */
.footer {
  background: var(--c-ink);
  border-top: 1px solid var(--c-line-dark);
  padding: 44px 0 52px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(245, 245, 247, 0.42);
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 32px;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--c-line-dark);
}
.footer__links { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer__links a { color: rgba(245, 245, 247, 0.66); }
.footer__links a:hover { color: #f5f5f7; }
.footer__note { margin: 22px 0 0; }

/* --------------------------------------------------------------------------
   スクロール連動アニメーション
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.09s; }
.reveal[data-delay="2"] { transition-delay: 0.18s; }
.reveal[data-delay="3"] { transition-delay: 0.27s; }
.reveal[data-delay="4"] { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__glow, .hero__scroll span { animation: none; }
  .device { transform: none; }
}

/* --------------------------------------------------------------------------
   レスポンシブ
   -------------------------------------------------------------------------- */
@media (max-width: 1000px) {
  .showcase { grid-template-columns: 1fr; text-align: center; }
  .showcase__copy .actions { justify-content: center; }
  .device { transform: none; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento__item--wide { grid-column: span 2; }
  .bento__item--tall { grid-row: auto; }
}

@media (max-width: 720px) {
  .nav__menu a:not(.nav__cta) { display: none; }
  .bento { grid-template-columns: 1fr; }
  .bento__item--wide { grid-column: auto; }
  .bento__item { min-height: 220px; }
  .stats { grid-template-columns: 1fr; gap: 44px; }
  .steps { grid-template-columns: 1fr; }
  .steps li {
    border-right: 0;
    border-bottom: 1px solid var(--c-line);
    padding-right: 0;
  }
  .sec--dark .steps li, .sec--black .steps li { border-color: var(--c-line-dark); }
  .steps li:last-child { border-bottom: 0; }
  .problems { grid-template-columns: 1fr; }
}