/* ========================================
   Utility
   ======================================== */
.nowrap { white-space: nowrap; }

/* ========================================
   CSS Variables
   ======================================== */
:root {
  /* Blue */
  --clr-blue:       #0d9ce4;;
  --clr-blue-rgb:   59, 174, 236;
  --clr-blue-dark:   #038ad3;
  --clr-blue-deeper: #024a96;
  --clr-blue-hdr:    rgba(2,67,154,0.85);

  /* Accent */
  --clr-accent:        #f8c830;
  --clr-accent-end:    #f3b820;
  --clr-accent-soft:   #fce07a;
  --clr-accent-deep:   #d49a10;
  --grad-accent:       linear-gradient(160deg, #ffe566 0%, #f8c830 40%, #edb000 78%, #d99a00 100%);
  --grad-accent-soft:  #fce07a;
  --grad-orange:       #f56315;
  --clr-card-label:    #888;
  --clr-card-white:    #fff;
  --clr-preseminar-label: #133661;
  --clr-faq-label: #333;
  --clr-cta-text: var(--clr-text);

  --grad-blue:         linear-gradient(90deg, var(--clr-blue-deeper) 0%, var(--clr-blue) 100%);
  --grad-blue-3d:      linear-gradient(160deg, #6ab2e8 0%, #2a72c0 40%, #1a52a0 78%, #0e3878 100%);

  /* Ink / Text */
  --clr-white:     #ffffff;
  --clr-white-rgb: 255,255,255;
  --clr-text:      #133661;
  --clr-text-rgb:  51,51,51;

  /* Background */
  --clr-bg-dark:    #e8e8e8;
  --clr-bg-light:   #f0f0f0;
  --clr-bg-lighter: #f5f5f5;
  --clr-bg-blue:    #eef8fd;
  --clr-bg-blue-dark: #cce9f7;
}

/* ── Reset ── */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--clr-blue);
  color: var(--clr-white);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 18px;
  line-height: 1.8;
  letter-spacing: 0.04em;
}

/* ── スムーススクロール ── */
/* 注: scroll-behavior:smooth はOSの「動きを減らす」設定で無効化されるため使わず、
   index.html 側の requestAnimationFrame による自前アニメーションで実装している。
   ここでは自前アニメと干渉しないよう auto を明示する。 */
html { scroll-behavior: auto; }
/* ネイティブのアンカー移動時に上部へ少し余白を確保（JS無効時のフォールバック用） */
section[id] { scroll-margin-top: 24px; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h3 { font-size: 22px; font-weight: 800; margin: 0; }

/* ── Scroll Fade ── */
[data-fade] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-fade].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Layout ── */
.drv-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 56px;
}

/* ── Sections ── */
.drv-section--navy       { background: var(--clr-blue); }
.drv-section--dark        { background: var(--clr-bg-dark); }
.drv-section--cream       { background: var(--clr-bg-light); }
.drv-section--cream-light { background: var(--clr-bg-lighter); }
.drv-section--blue        { background: var(--clr-bg-blue); }
.drv-section--accent      { background: var(--grad-accent); }
.drv-section--pad    { padding: 80px 0; }

/* ── Eyebrow labels ── */
.drv-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.32em;
  margin: 0 0 24px;
}
.drv-eyebrow--center { justify-content: center; text-align: center; width: 100%; display: flex; }
.drv-eyebrow--accent { background: var(--clr-card-label); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.drv-eyebrow--soft   { background: var(--clr-card-label); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.drv-eyebrow--soft .drv-eyebrow__line { background: var(--clr-card-label); }
.drv-eyebrow--muted  { color: rgba(var(--clr-white-rgb),0.65); }
.drv-eyebrow__line {
  display: inline-block;
  width: 24px; height: 3px;
  background: currentColor;
  -webkit-background-clip: border-box;
  background-clip: border-box;
}
.drv-eyebrow__line--long { width: 32px; }
.drv-eyebrow--accent .drv-eyebrow__line { background: var(--clr-card-label); }

/* ── SP改行制御 ── */
.drv-sp-br { display: none; }
.drv-pc-br { display: block; }

/* ── CTA Button ── */
.drv-cta-wrap {
  position: relative;
  display: inline-block;
}
.drv-cta-img {
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  height: 100px;
  width: auto;
  pointer-events: none;
  z-index: 2;
}
.drv-cta-btn {
  position: relative;
  transition: background-color 0.25s ease;
  overflow: hidden;
  border-radius: 100px;
  padding: 24px 24px 24px 36px;
}
.drv-cta-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 70%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
  transform: skewX(-12deg);
  transition: left 0s;
  pointer-events: none;
}
.drv-cta-btn:hover::before { left: 160%; transition: left 0.45s ease; }
.drv-cta-badge {
  display: inline-flex;
  align-items: center;
  align-self: stretch;
  background: var(--clr-text);
  color: var(--clr-white);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  margin: -12px 0 -12px -12px;
  padding: 0 18px 0 12px;
  border-radius: 100px 16px 16px 100px;
  flex-shrink: 0;
}
.drv-cta-btn .drv-cta-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: inset 0 2px 5px rgba(0,0,0,0.15);
  -webkit-mask: none;
  mask: none;
  flex-shrink: 0;
  vertical-align: middle;
  transition: transform 0.25s ease;
}
.drv-cta-btn .drv-cta-arrow::after {
  content: '';
  display: block;
  width: 22px;
  height: 12px;
  background-color: var(--clr-text);
  -webkit-mask: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2030%2028%22%3E%3Cpath%20d%3D%22M15.082%202.6665L26.3945%2013.979L15.082%2025.2915M24.8234%2013.979L1.88411%2013.979%22%20stroke%3D%22black%22%20stroke-width%3D%223.77083%22%20stroke-miterlimit%3D%2210%22%20stroke-linecap%3D%22square%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E") no-repeat center / contain;
  mask: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2030%2028%22%3E%3Cpath%20d%3D%22M15.082%202.6665L26.3945%2013.979L15.082%2025.2915M24.8234%2013.979L1.88411%2013.979%22%20stroke%3D%22black%22%20stroke-width%3D%223.77083%22%20stroke-miterlimit%3D%2210%22%20stroke-linecap%3D%22square%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E") no-repeat center / contain;
}
.drv-cta-btn:hover .drv-cta-arrow { transform: translateX(6px); }

/* ── FAQ Accordion ── */
.drv-faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.drv-faq-answer.open { max-height: 600px; }

/* ========================================
   Header
   ======================================== */
.drv-header {
  background: var(--clr-blue-hdr);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  /* position: sticky; */
  /* top: 0; */
  /* z-index: 50; */
  font-family: 'Noto Sans JP', sans-serif;
}
.drv-header__inner {
  width: 100%;
  padding: 20px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.drv-header__logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.drv-header__logo-texts {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.drv-header__logo-note {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--clr-blue);
  letter-spacing: 0.1em;
  background: #ffffff;
  padding: 4px 10px;
  white-space: nowrap;
}
.drv-header__logo-name {
  font-size: 16px;
  font-weight: 600;
  color: rgba(var(--clr-white-rgb),0.78);
  letter-spacing: 0.04em;
}
.drv-header__right {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 32px;
}
.drv-header__nav {
  display: flex;
  gap: 32px;
  font-size: 13px;
  font-weight: 700;
}
.drv-header__nav a {
  color: rgba(var(--clr-white-rgb),0.78);
  transition: color 0.2s;
}
.drv-header__nav a:hover { background: var(--grad-accent-soft); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.drv-header__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* ========================================
   Hero
   ======================================== */
.drv-hero {
  position: relative;
  overflow: hidden;
  color: var(--clr-white);
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
}
.drv-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: right top;
  filter: brightness(0.85) saturate(0.9);
  opacity: 1;
  z-index: 0;
}
.drv-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(var(--clr-blue-rgb),1) 0%, rgba(var(--clr-blue-rgb),0.7) 100%);
  clip-path: polygon(0 0, 61% 0, 49% 100%, 0 100%);
  z-index: 1;
  pointer-events: none;
}
.drv-hero__slash {
  position: absolute;
  inset: 0;
  background: var(--clr-blue-deeper);
  z-index: 0;
  opacity: 0.8;
}
.drv-hero__slash-line {
  position: absolute;
  top: -10%; right: -2%;
  width: 4px; height: 120%;
  background: var(--grad-accent);
  transform: skewX(-12deg);
  z-index: 1;
  opacity: 0.7;
}
.drv-hero__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 20% 30%,rgba(217,78,42,0.13) 0%,transparent 70%);
  z-index: 1;
  pointer-events: none;
}
.drv-hero__noise {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg,transparent 0,transparent 3px,rgba(255,255,255,0.018) 3px,rgba(255,255,255,0.018) 4px);
  z-index: 1;
  pointer-events: none;
}
.drv-hero__meta {
  position: absolute;
  top: 48px; left: 56px;
  font-family: 'Roboto', sans-serif;
  font-size: 10px;
  letter-spacing: 0.32em;
  color: rgba(var(--clr-white-rgb),0.5);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
}
.drv-hero__meta-dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--grad-accent);
  flex-shrink: 0;
}
.drv-hero__meta-vol {
  position: absolute;
  top: 48px; right: 56px;
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: rgba(var(--clr-white-rgb),0.5);
  z-index: 3;
}
.drv-hero__body {
  width: 100%;
  flex: 1;
  padding: 72px 56px 72px 15%;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.drv-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--clr-blue-deeper);
  color: var(--clr-white);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.18em;
  margin-bottom: 24px;
}
.drv-hero__badge-dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: #fff;
  border-radius: 50%;
}
.drv-hero__subtitle {
  font-size: 18px;
  font-weight: 600;
  color: rgba(var(--clr-white-rgb),0.78);
  letter-spacing: 0.18em;
  margin: 0 0 28px;
  text-transform: uppercase;
}
.drv-hero__h1 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 110px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0em;
  margin: 0;
  color: var(--clr-white);
}
.drv-hero__accent {
  font-style: normal;
  background: var(--grad-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  position: relative;
  display: inline-block;
}
.drv-hero__orange {
  font-style: normal;
  background: var(--grad-orange); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  position: relative;
  display: inline-block;
}
.drv-hero__marker {
  position: absolute;
  left: -8px; right: -8px; bottom: -2px;
  height: 20px;
  background: rgba(2,74,150,0.25);
  opacity: 1;
  z-index: -1;
}
.drv-hero__h1-sub {
  display: block;
  font-size: 0.75em;
  font-weight: 800;
  margin-top: 8px;
  color: var(--clr-white);
}
.drv-hero__rule {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 48px 0 28px;
  max-width: 755px;
}
.drv-hero__rule-accent {
  display: inline-block;
  width: 56px; height: 4px;
  background: var(--grad-accent);
  flex-shrink: 0;
}
.drv-hero__rule-line {
  flex: 1;
  height: 1px;
  background: var(--clr-text);
}
.drv-hero__lead {
  font-size: 18px;
  font-weight: 500;
  line-height: 2;
  color: rgba(var(--clr-white-rgb),0.78);
  margin: 0;
}
.drv-hero__actions {
  margin-top: 44px;
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}
.drv-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 16px rgba(120,60,0,0.3);
}
.drv-hero__note {
  margin-top: 16px;
}
.drv-hero__note span {
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  color: rgba(var(--clr-white-rgb),0.5);
  letter-spacing: 0.12em;
}

/* ========================================
   ② Problem
   ======================================== */
.drv-vision {
  position: relative;
  overflow: hidden;
  background: var(--clr-bg-lighter);
  padding-top: 160px;
}
.drv-vision .drv-timeline {
  margin-bottom: 160px;
}
.drv-vision::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.8), rgba(255,255,255,0.8)),
    url('images/bg/bg04.png') right top / 65% no-repeat;
  transform: scale(-1, 1);
  z-index: 0;
}
.drv-vision .drv-container {
  position: relative;
  z-index: 1;
}
.drv-problem { padding: 160px 0 160px; background: linear-gradient(rgba(246,244,238,0.7), rgba(246,244,238,0.7)), url('images/bg/bg04.png') right top / 65% no-repeat, var(--clr-bg-light); }
.drv-problem__header { margin-bottom: 72px; }
.drv-problem__header--right { text-align: right; }
.drv-problem__header--center { text-align: center; }
.drv-why .drv-problem__header { margin-bottom: 32px; }
.drv-problem__h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 64px;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0em;
  color: var(--clr-text);
  margin: 0;
}
.drv-problem__h2 em {
  font-style: normal;
  background: var(--grad-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.drv-problem .drv-problem__h2 em {
  margin: 0 -0.2em 0 -0.7em;
}
.drv-section--navy .drv-problem__h2 {
  color: var(--clr-white);
}
#faculty .drv-eyebrow__line,
#faq .drv-eyebrow__line { background: var(--clr-card-label); }
.drv-closing .drv-eyebrow__line { background: #444; }
.drv-closing .drv-eyebrow { color: #444; }
.drv-closing .drv-problem__h2 { color: var(--clr-text); }
.drv-closing .drv-why__lead { text-align: center; }
.drv-closing .drv-problem__header { margin-bottom: 32px; }
.drv-closing .drv-problem__h2 em {
  background: var(--grad-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-right: 0.2em;
}

.drv-cards-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.drv-card {
  position: relative;
  background: #ffffff;
  padding: 44px 32px 40px;
  border-left: 6px solid var(--clr-accent);
  box-shadow: 0 4px 16px rgba(var(--clr-blue-rgb),0.06);
  overflow: hidden;
}
.drv-card__bignum {
  position: absolute;
  top: 4px; right: 16px;
  font-family: 'Roboto', sans-serif;
  font-size: 88px;
  font-weight: 900;
  color: var(--clr-text);
  opacity: 0.08;
  line-height: 1;
  letter-spacing: -0.04em;
}
.drv-card__label {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  letter-spacing: 0.22em;
  color: var(--clr-card-label);
  margin: 0 0 14px;
  font-weight: 700;
}
.drv-card__title {
  font-size: 24px;
  line-height: 1.6;
  color: var(--clr-text);
  margin: 40px 0 28px;
}

.drv-conclusion {
  margin-top: 32px;
  background:
    linear-gradient(rgba(var(--clr-blue-rgb),0.92), rgba(var(--clr-blue-rgb),0.92)),
    url('images/bg/bg01.jpg') center/cover no-repeat;
  color: var(--clr-white);
  padding: 72px 56px 80px;
  text-align: center;
}
.drv-conclusion__eyebrow {
  font-family: 'Roboto', sans-serif;
  font-size: 20px;
  letter-spacing: 0.32em;
  background: var(--grad-accent-soft); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin: 0 0 28px;
  font-weight: 700;
}
.drv-conclusion__text {
  font-size: 24px;
  font-weight: 400;
  line-height: 2.1;
  color: var(--clr-white);
  margin: 0 auto 36px;
}
.drv-conclusion__text strong {
  font-weight: 600;
}
.drv-conclusion__rule {
  display: inline-block;
  width: 120px; height: 3px;
  background: var(--grad-accent-soft);
  margin-bottom: 36px;
}
.drv-conclusion__h3 {
  font-size: 40px;
  font-weight: 900;
  letter-spacing: 0em;
  line-height: 1.25;
  margin: 0;
  color: var(--clr-white);
}

/* ========================================
   ③ Vision
   ======================================== */
.drv-section-h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 900;
  letter-spacing: 0em;
  margin: 0;
  line-height: 1.25;
}
.drv-section-h2--dark  { color: var(--clr-text); }
.drv-section-h2--light { color: var(--clr-white); }

.drv-cards-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}
.drv-vision-card {
  background: #ffffff;
  border-bottom: 4px solid var(--clr-accent);
  box-shadow: 0 4px 12px rgba(var(--clr-blue-rgb),0.18);
}
.drv-vision-card__img {
  aspect-ratio: 4/3;
  background: #f0ece4;
  overflow: hidden;
}
.drv-vision-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.drv-vision-card__body { padding: 32px 28px 36px; }
.drv-vision-card__label {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  letter-spacing: 0.18em;
  background: var(--clr-card-label); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin: 0 0 10px;
  font-weight: 700;
}
.drv-vision-card__title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--clr-text);
  margin: 0;
  line-height: 1.7;
}

.drv-timeline {
  background:
    linear-gradient(rgba(var(--clr-blue-rgb),0.85), rgba(var(--clr-blue-rgb),0.85)),
    url('images/bg/bg03.png') center/cover no-repeat;
  padding: 56px 64px;
  position: relative;
  overflow: hidden;
}
.drv-timeline__slash {
  position: absolute;
  top: 0; right: -8%;
  width: 38%; height: 100%;
  background: var(--clr-blue-dark);
  transform: skewX(-12deg);
  opacity: 0.6;
}
.drv-timeline__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 5.5fr 4.5fr;
  gap: 56px;
  align-items: start;
}
.drv-timeline__left { padding-top: 4px; align-self: center; }
.drv-timeline__eyebrow {
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  letter-spacing: 0.32em;
  background: var(--clr-card-white); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin: 0 0 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}
.drv-timeline__eyebrow .drv-eyebrow__line { background: var(--clr-card-white); }
.drv-timeline__title {
  font-size: 40px;
  font-weight: 900;
  color: var(--clr-white);
  margin: 0 0 36px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.drv-timeline__list {
  position: relative;
  padding-left: 0;
}
.drv-timeline__list::before {
  content: '';
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: 4px;
  width: 2px;
  background: #ffd954;
}
.drv-timeline__row {
  position: relative;
  display: block;
  padding: 0 0 40px 44px;
}
.drv-timeline__row:last-child { padding-bottom: 0; }
.drv-timeline__row::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffd954;
  border: 3px solid var(--clr-blue);
  box-shadow: 0 0 0 1.5px var(--clr-accent-soft);
}
.drv-timeline__period {
  display: block;
  font-family: 'Roboto', sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: #ffd954;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}
.drv-timeline__text {
  display: block;
  font-size: 16px;
  color: rgba(var(--clr-white-rgb),0.9);
  line-height: 1.75;
}

/* ========================================
   ④ Features
   ======================================== */
.drv-features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 96px;
}
.drv-feature-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.drv-feature-card--wide { grid-column: 1 / -1; }
.drv-feature-card:nth-child(odd) .drv-feature-card__img { order: 2; }
.drv-feature-card--wide .drv-feature-card__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.drv-feature-card__img {
  aspect-ratio: unset;
  overflow: hidden;
  background: var(--clr-border);
  box-shadow: 0 4px 16px rgba(var(--clr-text-rgb),0.10);
  align-self: start;
}
.drv-feature-card__img img {
  width: 100%;
  height: auto;
  display: block;
}
.drv-feature-card__img--fill {
  aspect-ratio: unset;
  overflow: hidden;
  background: var(--clr-border);
}
.drv-feature-card__img--fill img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.drv-feature-card__body {
  padding: 48px 48px 72px;
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 24px;
  align-items: stretch;
}
.drv-feature-card__body--wide {
  padding: 48px 48px 48px;
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 24px;
  align-items: stretch;
}
.drv-feature-card__side {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 4px;
}
.drv-feature-card__side::after {
  content: '';
  flex: 1;
  width: 2px;
  background: #bbb;
  margin-top: 20px;
}
.drv-feature-card__label {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #bbb;
}
.drv-feature-card__num-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.drv-feature-card__num {
  font-family: 'Roboto', sans-serif;
  font-size: 48px;
  font-weight: 900;
  background: var(--grad-orange); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.drv-feature-card__num-rule { display: none; }
.drv-feature-card__h3 {
  font-size: 24px;
  font-weight: 800;
  background: var(--grad-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 24px;
  line-height: 1.5;
}
.drv-feature-card__p {
  font-size: 1rem;
  color: var(--clr-text);
  line-height: 2;
  margin: 0;
}
.drv-feature-card__p strong {
  font-weight: 800;
  color: var(--clr-text);
}

/* ========================================
   ⑤ Program
   ======================================== */
#program { position: relative; overflow: hidden; }
#faculty { position: relative; overflow: hidden; }
#faculty::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: url('images/bg/bg05.png') center bottom / 100% auto no-repeat;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
  transform: scaleY(-1.1);
}
#faculty .drv-container { position: relative; z-index: 1; }
#cta { position: relative; overflow: hidden; }
#cta::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: url('images/bg/bg05.png') center bottom / 100% auto no-repeat;
  opacity: 0.7;
  pointer-events: none;
  z-index: 0;
  transform: scaleY(-1.1);
}
#cta .drv-container { position: relative; z-index: 1; }
#program::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: url('images/bg/bg05.png') center bottom / 100% auto no-repeat;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}
#program .drv-container { position: relative; z-index: 1; }
.drv-phase-wrap { position: relative; }
.drv-phase-wrap__info {
  text-align: right;
  margin-bottom: 16px;
}
.drv-program__meta {
  font-size: 20px;
  color: var(--clr-text);
  margin: 0 0 4px;
  font-weight: 600;
}
.drv-program__date {
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  color: var(--clr-text);
  letter-spacing: 0.08em;
  margin: 0;
}
.drv-phase-cards { display: flex; flex-direction: column; gap: 24px; }
.drv-phase-card { background: var(--clr-white); overflow: hidden; box-shadow: 0 4px 12px rgba(var(--clr-text-rgb),0.12); }
.drv-phase-card__bar { height: 5px; }
.drv-phase-card__inner {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-top: 1px solid var(--clr-border);
}
.drv-phase-card__meta {
  padding: 40px 32px;
  border-right: 1px solid var(--clr-border);
}
.drv-phase-card__label {
  font-family: 'Roboto', sans-serif;
  font-style: normal;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  margin: 0 0 6px;
}
.drv-phase-card__sublabel {
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: rgba(var(--clr-text-rgb),0.4);
  text-transform: uppercase;
  margin: 0 0 20px;
}
.drv-phase-card__range {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  color: rgba(var(--clr-text-rgb),1);
  margin: 0;
}
.drv-phase-card__content { padding: 40px 48px; }
.drv-phase-card__h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--clr-text);
  margin: 0 0 6px;
  line-height: 1.55;
}
.drv-phase-card__desc {
  font-size: 18px;
  color: var(--clr-text);
  margin: 0 0 20px;
  line-height: 1.7;
}
.drv-phase-card__topics {
  font-size: 1rem;
  color: rgba(var(--clr-text-rgb),0.75);
  margin: 0;
  line-height: 1.85;
}
.drv-phase-card__topics::before {
  content: 'TOPICS';
  display: block;
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.28em;
  line-height: 1;
  background: #888;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 2px;
}
.drv-program__link {
  text-align: center;
  margin-top: 48px;
}
.drv-program__link a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--grad-blue-3d);
  color: var(--clr-white);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 100px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 16px rgba(2,74,150,0.35);
  transition: background-color 0.25s ease;
}
.drv-program__link a::before {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
  transform: skewX(-12deg);
  transition: left 0s;
  pointer-events: none;
}
.drv-program__link a:hover::before { left: 160%; transition: left 0.45s ease; }
.drv-program__link a .drv-cta-arrow { transition: transform 0.25s ease; }
.drv-program__link a:hover .drv-cta-arrow { transform: translateX(6px); }

/* ========================================
   ⑥ Faculty
   ======================================== */
.drv-faculty__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 40px;
}
.drv-faculty-card {
  display: flex;
  flex-direction: row;
  overflow: hidden;
  border-bottom: 2px solid var(--clr-text);
}
.drv-faculty-card__photo {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
}
.drv-faculty-card__photo img {
  display: block;
  width: auto;
  height: auto;
}
.drv-faculty-card__badge {
  display: inline-block;
  background: transparent;
  color: var(--clr-text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0;
}
.drv-faculty-card__badge--pc {
  display: none;
}
.drv-faculty-card__badge--sp {
  display: inline-block;
  margin-bottom: 0;
}
.drv-faculty-card__body {
  flex: 1;
  padding: 20px 20px 24px 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.drv-faculty-card__name {
  font-size: 24px;
  font-weight: 800;
  color: var(--clr-text);
  margin: 0 0 10px;
  line-height: 1.4;
}
.drv-faculty-card__bio {
  font-size: 1rem;
  color: var(--clr-text);
  line-height: 1.8;
  margin: 0 0 8px;
}
.drv-faculty-card__assignment {
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  color: var(--clr-text);
  margin: 0;
  letter-spacing: 0.05em;
}.drv-faculty__note {
  margin-top: 40px;
  text-align: center;
  font-size: 16px;
  color: var(--clr-text);
}

/* ========================================
   ⑦ Why Now
   ======================================== */
.drv-why { position: relative; overflow: hidden; }
.drv-why__slash {
  position: absolute;
  top: 0; right: -8%;
  width: 40%; height: 100%;
  background: var(--clr-bg-blue-dark);
  transform: skewX(-12deg);
  opacity: 0.6;
}
.drv-why__lead {
  text-align: left;
  font-size: 24px;
  color: var(--clr-text);
  line-height: 2;
  margin: 0 0 56px;
}
.drv-why__top {
  position: relative;
  min-height: 730px;
  margin-bottom: 64px;
}
.drv-why__steps {
  position: absolute;
  bottom: -40px;
  right: -80px;
  width: 75%;
  pointer-events: none;
}
.drv-why__steps img { width: 100%; display: block; }
.drv-why__sequence {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-text);
  padding: 20px 32px;
  text-align: center;
  margin-bottom: 16px;
}
.drv-why__sequence-label {
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  letter-spacing: 0.22em;
  background: var(--grad-accent-soft); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin: 0 0 8px;
  font-weight: 700;
}
.drv-why__sequence-text {
  font-size: 16px;
  font-weight: 800;
  color: var(--clr-white);
  margin: 0;
}
.drv-step {
  background: var(--clr-blue-dark);
  padding: 24px 32px;
  text-align: center;
  border-left: 6px solid var(--clr-accent);
}
.drv-step__label {
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  background: var(--grad-accent-soft); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin: 0 0 8px;
  letter-spacing: 0.1em;
  font-weight: 700;
}
.drv-step__text {
  font-size: 17px;
  font-weight: 800;
  color: var(--clr-white);
  margin: 0;
}
.drv-step-arrow {
  text-align: center;
  padding: 8px 0;
  background: var(--grad-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-size: 20px;
  font-weight: 900;
}
.drv-why__cta-box {
  max-width: fit-content;
  margin: 0 auto;
  padding: 64px;
  border: 2px solid rgba(248,200,48,0.5);
  background: rgba(248,200,48,0.07);
  text-align: center;
  position: relative;
}
.drv-why__cta-corner { position: absolute; width: 24px; height: 24px; }
.drv-why__cta-corner--tl { top: -2px; left: -2px; border-top: 4px solid var(--clr-accent); border-left: 4px solid var(--clr-accent); }
.drv-why__cta-corner--br { bottom: -2px; right: -2px; border-bottom: 4px solid var(--clr-accent); border-right: 4px solid var(--clr-accent); }
.drv-why__cta-date {
  margin: 0 0 64px;
}
.drv-why__cta-date__label {
  font-size: 22px;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: 0.08em;
  margin: 0 0 32px;
}
.drv-why__cta-date__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.drv-why__cta-date__list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.drv-why__cta-date__day {
  font-size: 22px;
  font-weight: 800;
  color: var(--clr-text);
  min-width: 7em;
}
.drv-why__cta-date__time {
  font-size: 16px;
  font-weight: 600;
  color: var(--clr-text);
  opacity: 0.75;
}
.drv-why__cta-date__tags {
  display: flex;
  flex-wrap: nowrap;
  gap: 32px;
  width: fit-content;
}
.drv-why__cta-date__tag {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  background: var(--clr-white);
  padding: 28px 20px 24px;
  min-width: 120px;
}
.drv-date-tag__num {
  font-size: 40px;
  font-weight: 300;
  color: var(--clr-text);
  letter-spacing: 0.04em;
  line-height: 1;
}
.drv-date-tag__slash {
  font-size: 22px;
  font-weight: 300;
  vertical-align: 6px;
}
.drv-date-tag__day {
  display: inline-block;
  background: var(--clr-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0 8px;
  border-radius: 2px;
}
.drv-date-tag__time {
  font-size: 20px;
  font-weight: 500;
  color: var(--clr-text);
  letter-spacing: 0.02em;
  line-height: 1;
}
.drv-why__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 0 8px 16px rgba(120,60,0,0.3);
}
/* ── Why Now 参加者特典 ── */
.drv-why__benefits {
  margin-top: 24px;
  margin-bottom: 64px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(2, 74, 150, 0.2);
  text-align: center;
}
.drv-why__benefits-label {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: 0.08em;
}
.drv-why__benefits-list {
  display: inline-flex;
  align-items: center;
  gap: 56px;
  padding: 0;
}
.drv-why__benefit-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: 0.04em;
}
.drv-why__benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.drv-why__closing em {
  font-style: normal;
  background: var(--grad-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.drv-why__closing {
  text-align: center;
  font-size: 40px;
  color: var(--clr-text);
  font-weight: 800;
  margin: 0 0 48px;
  line-height: 1.9;
}

/* ========================================
   ⑧ Pre-seminar
   ======================================== */
.drv-preseminar__lead {
  text-align: left;
  font-size: 1rem;
  color: rgba(var(--clr-text-rgb),0.75);
  line-height: 2;
  margin: 0 0 32px;
}
.drv-preseminar__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin: 0 0 56px;
}
.drv-preseminar-card {
  background: #ffffff;
  border-left: 6px solid var(--clr-accent);
  padding: 28px 32px;
  box-shadow: 0 4px 12px rgba(var(--clr-text-rgb),0.12);
}
.drv-preseminar-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--clr-accent);
}
.drv-preseminar-card__num {
  font-family: 'Roboto', sans-serif;
  font-size: 20px;
  font-weight: 900;
  color: var(--clr-preseminar-label);
  line-height: 1;
}
.drv-preseminar-card__h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--clr-preseminar-label);
  margin: 0;
}
.drv-preseminar-card__list {
  margin: 0; padding: 0;
  list-style: none;
}
.drv-preseminar-card__list li {
  font-size: 1rem;
  color: rgba(var(--clr-text-rgb),0.75);
  padding: 7px 0;
  line-height: 1.85;
  border-bottom: 1px solid rgba(var(--clr-blue-rgb),0.08);
}
.drv-preseminar-card__list li:last-child { border-bottom: none; }
.drv-preseminar-card__list--dates {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.drv-preseminar-card__list-date { padding-left: 20px !important; }
.drv-preseminar-card__list-sm { font-size: 0.85rem; }
.drv-preseminar__cta { text-align: center; }
.drv-preseminar__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 0 8px 16px rgba(120,60,0,0.3);
}

/* ========================================
   ⑨ FAQ
   ======================================== */
.drv-faq__list {
  border-top: 1px solid var(--clr-text);
}
.drv-faq__item { border-bottom: 1px solid var(--clr-text); }
.drv-faq__question {
  width: 100%;
  display: grid;
  grid-template-columns: 64px 1fr 30px;
  gap: 24px;
  align-items: center;
  padding: 24px 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: 'Noto Sans JP', sans-serif;
}
.drv-faq__q-num {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--clr-text);
}
.drv-faq__q-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.6;
}
.drv-faq__q-icon {
  font-size: 20px;
  color: var(--clr-text);
  text-align: right;
  transition: transform 0.25s ease;
  display: inline-block;
  font-weight: 900;
}
.drv-faq-answer { padding: 0 8px 0 88px; }
.drv-faq__answer-text {
  font-size: 16px;
  color: #333;
  line-height: 2.05;
  margin: 0 0 28px;
}
.drv-faq__answer-text a{
  color: #a80f0f;;
}

/* ========================================
   ⑩ Closing
   ======================================== */
.drv-closing {
  padding: 160px 0 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.drv-closing__slash {
  position: absolute;
  top: -10%; right: -6%;
  width: 45%; height: 120%;
  background: var(--clr-bg-blue-dark) url('images/bg/bg05.png') right bottom / cover no-repeat;
  transform: skewX(-12deg);
  opacity: 0.7;
  mix-blend-mode: multiply;
}
.drv-closing__h2 {
  font-size: 52px;
  font-weight: 900;
  color: var(--clr-text);
  margin: 0 0 32px;
  line-height: 1.2;
  letter-spacing: 0em;
}
.drv-closing__lead {
  font-size: 16px;
  color: rgba(var(--clr-text-rgb),0.85);
  margin: 0 0 8px;
  line-height: 2;
  font-weight: 500;
}
.drv-closing__lead--last { margin-bottom: 56px; }
.drv-closing__rule {
  width: 56px; height: 4px;
  background: var(--clr-text);
  margin: 0 auto 48px;
  opacity: 0.6;
}
.drv-closing__summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 56px;
}
.drv-closing__summary-item {
  background: var(--clr-white);
  padding: 24px 0;
  text-align: center;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(var(--clr-text-rgb),0.12);
}
.drv-closing__summary-illust {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--clr-bg-light);
  margin: 8px 0 12px;
  overflow: hidden;
}
.drv-closing__summary-illust img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.drv-closing__summary-num {
  display: inline-block;
  font-family: 'Roboto', sans-serif;
  font-size: 36px;
  font-weight: 900;
  color: #666;
  margin: 0 0 8px;
  line-height: 1;
}
.drv-closing__summary-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin: 0;
  line-height: 1.6;
}
.drv-closing__notice {
  font-size: 1rem;
  color: var(--clr-text);
  margin: 0 0 24px;
  font-weight: 500;
}
.drv-closing__actions {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
}
.drv-closing__cta-main {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 0 8px 16px rgba(120,60,0,0.3);
  transition: background-color 0.25s ease, color 0.25s ease;
}
.drv-closing__cta-sub {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--grad-blue-3d);
  color: var(--clr-white);
  border: none;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 100px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 16px rgba(2,74,150,0.35);
  transition: background-color 0.25s ease;
}
.drv-closing__cta-sub::before {
  content: '';
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
  transform: skewX(-12deg);
  transition: left 0s;
  pointer-events: none;
}
.drv-closing__cta-sub:hover::before { left: 160%; transition: left 0.45s ease; }
.drv-closing__cta-sub .drv-cta-arrow { transition: transform 0.25s ease; }
.drv-closing__cta-sub:hover .drv-cta-arrow { transform: translateX(6px); }
.drv-closing__disclaimer {
  margin-top: 56px;
  font-size: 14px;
  color: var(--clr-text);
  line-height: 1.85;
}
.drv-closing__footer {
  position: relative;
  z-index: 1;
  width: 100%;
  margin-top: 72px;
  padding: 24px 48px;
  border-top: 1px solid rgba(var(--clr-text-rgb),0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  color: var(--clr-text);
  letter-spacing: 0.1em;
  box-sizing: border-box;
}
.drv-closing__footer-edition {
  font-size: 13px;
  color: var(--clr-text);
  letter-spacing: 0.08em;
  font-weight: 700;
}
.drv-closing__footer-links a {
  font-size: 12px;
  color: var(--clr-text);
  letter-spacing: 0.08em;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s ease;
}
.drv-closing__footer-links a:hover { opacity: 0.65; }

/* ========================================
   Hero — Light Theme Test (A)
   ======================================== */
html, body { background: var(--clr-white); }
.drv-hero { background: var(--clr-white); }
.drv-hero__overlay {
  background: linear-gradient(to right, transparent 40%, rgba(var(--clr-blue-rgb),0.6) 100%);
  clip-path: none;
}
.drv-hero__slash {
  background: var(--clr-white);
  opacity: 0.9;
  clip-path: polygon(0 0, 61% 0, 49% 100%, 0 100%);
  bottom: -1px;
}
.drv-hero__glow {
  background: radial-gradient(ellipse 60% 50% at 20% 30%, rgba(255,168,78,0.1) 0%, transparent 70%);
}
.drv-hero__subtitle { color: rgba(var(--clr-text-rgb),0.9); }
.drv-hero__meta { color: rgba(var(--clr-text-rgb),0.5); }
.drv-hero__meta-dot { background: var(--clr-accent); }
.drv-hero__meta-vol { color: rgba(var(--clr-text-rgb),0.5); }
.drv-hero__badge { background: var(--clr-blue); color: var(--clr-white); }
.drv-hero__badge-dot { background: var(--clr-white); }
.drv-hero__h1 { color: var(--clr-text); }
.drv-hero__h1-sub { color: var(--clr-text); }
.drv-hero__rule-line { background: rgba(var(--clr-text-rgb),0.12); }
.drv-hero__lead { color: rgba(var(--clr-text-rgb),1); }
.drv-hero__note { color: rgba(var(--clr-text-rgb),0.5); }
.drv-hero__marker { background: rgba(2,74,150,0.25); }
.drv-hero__noise { background-image: repeating-linear-gradient(0deg,transparent 0,transparent 3px,rgba(var(--clr-blue-rgb),0.03) 3px,rgba(var(--clr-blue-rgb),0.03) 4px); }
.drv-header { background: rgba(255,255,255,0.7); backdrop-filter: blur(32px); -webkit-backdrop-filter: blur(32px); }
.drv-header__nav a { color: var(--clr-text); }
.drv-header__logo-name { color: var(--clr-text); }
.drv-header__logo-note { background: var(--clr-blue); color: var(--clr-white); }

/* ========================================
   Responsive — Header Nav (≤1200px)
   ======================================== */
@media (max-width: 1200px) {
  .drv-header__nav { display: none; }
}

/* ========================================
   Responsive — Tablet (≤1024px)
   ======================================== */
@media (max-width: 924px) {
  .drv-why__cta-box { max-width: 100%; }
  .drv-why__cta-date__tags { flex-wrap: wrap; gap: 16px; width: 100%; }
  .drv-why__cta-date__tag { gap: 16px; padding: 20px 16px; min-width: calc(50% - 8px); flex: 1 1 calc(50% - 8px); }
}

@media (max-width: 1024px) {
  .drv-container { padding: 0 32px; }
  .drv-section--pad { padding: 96px 0; }

  /* Header */
  .drv-header__inner { padding: 16px 32px; }
  .drv-header__nav { gap: 18px; font-size: 12px; }

  /* Hero */
  .drv-hero__h1 { font-size: 72px; }
  .drv-hero__body { padding: 56px 32px 56px 8%; }
  .drv-hero__meta { left: 32px; }
  .drv-hero__meta-vol { right: 32px; }

  /* h2 */
  .drv-problem__h2 { font-size: 48px; }
  .drv-problem { padding: 96px 0; }
  .drv-card__title br { display: none; }
  .drv-vision { padding-top: 96px; }
  .drv-vision .drv-timeline { margin-bottom: 96px; }

  /* Cards */
  .drv-cards-4col { grid-template-columns: repeat(2, 1fr); }
  .drv-faculty__grid { grid-template-columns: 1fr; gap: 16px; }
  .drv-faculty-card__photo { width: 160px; }

  /* Feature cards */
  .drv-feature-card__body { padding: 32px 32px 48px; }
  .drv-features__grid { gap: 72px; }

  /* Phase card */
  .drv-phase-card__inner { grid-template-columns: 160px 1fr; }
  .drv-phase-card__content { padding: 32px 36px; }

  /* Timeline */
  .drv-timeline { padding: 48px; }
  .drv-timeline__title { font-size: 28px; }

  /* Why Now */
  .drv-why__top { min-height: 560px; }
  .drv-why__steps { width: 60%; right: -40px; }
  .drv-why__closing { font-size: 32px; }

  /* Closing */
  .drv-closing__summary { max-width: 700px; }
  .drv-closing { padding: 96px 0 0; }
}

/* ========================================
   Responsive — Mobile (≤768px)
   ======================================== */
@media (max-width: 768px) {
  .drv-container { padding: 0 20px; }
  .drv-section--pad { padding: 64px 0; }

  /* ---- Header ---- */
  .drv-header { position: static; }
  .drv-header__inner { padding: 10px 20px; gap: 0; }
  /* ロゴを1行（横並び）にして高さを詰める */
  .drv-header__logo-texts { flex-direction: row; align-items: center; gap: 8px; }
  .drv-header__logo-note { font-size: 11px; padding: 3px 8px; }
  .drv-header__logo-name { font-size: 12px; white-space: nowrap; }
  .drv-header__nav { display: none; }
  .drv-header__cta { display: none; }

  /* ---- Hero (縦分割: 上=画像 / 下=ネイビー+テキスト) ---- */
  .drv-hero { min-height: calc(100svh - 54px); }
  .drv-hero__bg {
    background-position: 80% -10%;
    background-size: auto 75%;
    background-repeat: no-repeat;
    -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 75%);
    mask-image: linear-gradient(to bottom, black 50%, transparent 75%);
  }
  .drv-hero__slash { inset: 0; clip-path: polygon(0 calc(100% - 400px), 100% calc(100% - 440px), 100% 100%, 0 100%); }
  .drv-hero__overlay {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 440px), 0 calc(100% - 400px));
    background: rgba(var(--clr-blue-rgb),0.6);
    opacity: 0.8;
  }
  .drv-hero__slash-line {
    top: 0; right: 0; bottom: 0; left: 0;
    width: 100%; height: 100%;
    transform: none;
    clip-path: polygon(0 calc(100% - 400px), 100% calc(100% - 440px), 100% 100%, 0 100%);
    background: var(--clr-white);
    opacity: 0.9;
  }
  .drv-hero__body {
    padding: 20px 20px 40px;
    justify-content: flex-end;
  }
  .drv-hero__meta { display: none; }
  .drv-hero__meta-vol { display: none; }
  .drv-hero__subtitle { display: none; }
  .drv-hero__badge { margin-bottom: 16px; }
  .drv-hero__h1 { font-size: clamp(36px, 10vw, 48px); line-height: 1.4; }
  .drv-hero__rule { margin: 12px 0 8px; }
  .drv-hero__lead { font-size: 14px; }
  /* ---- CTA共通 ---- */
  .drv-cta-btn {
    padding: 14px 24px 14px 28px;
    font-size: 18px;
    line-height: 1.4;
    width: 100%;
    max-width: 560px;
  }
  .drv-program__link a {
    font-size: 18px;
  }
  .drv-cta-btn .drv-cta-text {
    flex: 1;
    text-align: left;
    padding-left: 0.5rem;   /* 左端に張り付かないよう少し隙間を空ける */
  }
  .drv-cta-wrap {
    display: block;
    width: 100%;
  }
  /* .drv-cta-img {
    left: 0;
    height: 72px;
    transform: translateY(-50%);
  } */
  .drv-cta-img { display: none; }
  .drv-sp-br { display: inline; }
  .drv-pc-br { display: none; }
  .drv-cta-badge {
    font-size: 12px;
    padding: 2px 10px;
  }

  /* ---- Hero CTA ---- */
  .drv-hero__actions { margin-top: 16px; }
  .drv-hero__note { display: none; }
  .drv-hero__marker { height: 12px; left: 0; right: 0; }

  /* ---- Section h2 ---- */
  .drv-problem__h2 { font-size: 32px; line-height: 1.6; }
  .drv-problem { padding: 64px 0; background-size: auto, 75%; }
  .drv-vision { padding-top: 64px; }
  .drv-vision::before { background-size: auto, 75%; }
  .drv-vision .drv-timeline { margin-bottom: 64px; }
  .drv-problem__header { margin-bottom: 36px; }
  .drv-problem__header--right { text-align: left; }

  /* ---- Problem cards ---- */
  .drv-cards-3col { grid-template-columns: 1fr; gap: 12px; }
  .drv-card { padding: 36px 26px 32px; }
  .drv-card__title { font-size: 22px; margin: 20px 0 12px; }
  .drv-card__bignum { font-size: 70px; }

  /* ---- Conclusion ---- */
  .drv-conclusion { padding: 48px 24px 56px; }
  .drv-conclusion__h3 { font-size: 26px; }
  .drv-conclusion__text { font-size: 15px; }

  /* ---- Vision cards ---- */
  .drv-cards-4col { grid-template-columns: 1fr; }

  /* ---- Timeline ---- */
  .drv-timeline { padding: 40px 24px; }
  .drv-timeline__inner { grid-template-columns: 1fr; gap: 32px; }
  .drv-timeline__title { font-size: 22px; margin-bottom: 0; }

  /* ---- Feature cards ---- */
  .drv-features__grid { gap: 48px; }
  .drv-feature-card { grid-template-columns: 1fr; }
  .drv-feature-card:nth-child(odd) .drv-feature-card__img { order: 0; }
  .drv-feature-card__body {
    grid-template-columns: 1fr;
    padding: 28px 20px 36px;
  }
  .drv-feature-card__side { display: none; }

  /* ---- Phase cards ---- */
  .drv-phase-card__inner { grid-template-columns: 1fr; }
  .drv-phase-card__meta {
    border-right: none;
    border-bottom: 1px solid var(--clr-border);
    padding: 20px 20px 16px;
  }
  .drv-phase-card__content { padding: 20px; }
  .drv-phase-wrap__info { text-align: left; }
  .drv-program__meta { font-size: 14px; }

  /* ---- Faculty ---- */
  .drv-faculty__note { margin-top: 20px; }
  .drv-faculty-card__photo { width: 110px; }
  .drv-faculty-card__name { font-size: 15px; }
  .drv-faculty-card__bio { font-size: 13px; }

  /* ---- Why Now ---- */
  .drv-why__top { min-height: auto; margin-bottom: 32px; }
  .drv-why__steps { position: static; width: 100%; }
  .drv-why__lead { font-size: 15px; margin-bottom: 36px; }
  .drv-why__closing { font-size: 26px; line-height: 1.6; }
  .drv-why__cta-box { padding: 32px 20px; max-width: 100%; }
  .drv-why__cta-date { margin: 0 0 36px; }
  .drv-why__cta-date__label { font-size: 16px; margin-bottom: 20px; }
  .drv-why__cta-date__tags { flex-wrap: wrap; gap: 12px; width: 100%; }
  .drv-why__cta-date__tag { gap: 12px; padding: 16px 12px; min-width: calc(50% - 6px); flex: 1 1 calc(50% - 6px); }
  .drv-date-tag__num { font-size: 28px; }
  .drv-date-tag__slash { font-size: 16px; }
  .drv-date-tag__time { font-size: 14px; }
  .drv-why__benefits-list { flex-direction: column; gap: 12px; padding: 0; width: 100%; }
  .drv-why__benefit-item { font-size: 14px; }
  /* ---- Preseminar ---- */
  .drv-preseminar__cards { grid-template-columns: 1fr; gap: 20px; }

  /* ---- FAQ ---- */
  .drv-faq__question {
    grid-template-columns: 36px 1fr 24px;
    gap: 12px;
    padding: 20px 4px;
  }
  .drv-faq__q-text { font-size: 15px; }
  .drv-faq-answer { padding: 0 4px 0 48px; }
  .drv-faq__answer-text { font-size: 14px; }

  /* ---- Closing ---- */
  .drv-closing { padding: 64px 0 0; }
  .drv-closing__slash { display: none; }
  .drv-closing__summary { grid-template-columns: 1fr; max-width: 360px; gap: 16px; }
  .drv-closing__summary-illust { width: 70%; margin-left: auto; margin-right: auto; }
  .drv-closing__footer {
    flex-direction: column;
    gap: 6px;
    text-align: center;
    padding: 20px 20px 120px;
  }
}

/* ========================================
   PC Fixed CTA（右下）
   ======================================== */
.drv-pc-cta-fixed {
  position: fixed;
  bottom: 60px;
  right: 40px;
  z-index: 100;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  padding-top: 48px;
}
.drv-pc-cta-fixed__img {
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  height: 70px;
  width: auto;
  pointer-events: none;
  z-index: 2;
}
.drv-pc-cta-fixed.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.drv-pc-cta-fixed__btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 160px;
  height: 160px;
  padding: 0 24px;
  background: var(--grad-accent);
  color: var(--clr-cta-text);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.6;
  text-align: center;
  white-space: normal;
  box-shadow: 0 8px 16px rgba(120,60,0,0.3);
  border-radius: 50%;
}
.drv-pc-cta-fixed__btn .drv-cta-arrow {
  width: 28px;
  height: 28px;
}
@media (max-width: 768px) {
  .drv-pc-cta-fixed { display: none; }
}

/* ========================================
   Mobile Fixed CTA Bar
   ======================================== */
.drv-mobile-cta-bar {
  display: none;
}
@media (max-width: 768px) {
  .drv-mobile-cta-bar {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(var(--clr-blue-rgb), 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 12px 20px;
  }
  .drv-mobile-cta-bar__inner {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .drv-mobile-cta-bar__btn {
    width: 70%;
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 18px;
    font-weight: 700;
    color: var(--clr-cta-text);
    background: var(--grad-accent);
  }
}

/* ========================================
   Responsive — Small Mobile (≤499px)
   ======================================== */
@media (max-width: 499px) {
  .drv-conclusion__text br { display: none; }
  .drv-problem { background-size: auto, 80%; }
  .drv-vision::before { background-size: auto, 80%; }
  .drv-mobile-cta-bar__btn { width: 100%; }
}

/* ========================================
   CTAボタン 狭幅対応
   （矢印の見切れ・不自然な改行を防止／お問い合わせページと同方針）
   ======================================== */
@media (max-width: 768px) {
  /* WHY枠の余白(64px)が大きすぎてボタンが収まらないため縮小 */
  .drv-why__cta-box { padding: 36px 20px; }
  /* モバイル固定バーのテキストは1行固定（変な位置で改行させない） */
  .drv-mobile-cta-bar__btn .drv-cta-text { white-space: nowrap; }
}
@media (max-width: 400px) {
  /* 狭幅では全CTAをコンパクト化し、矢印が枠から見切れないようにする */
  .drv-cta-btn { padding: 13px 16px; font-size: 15px; gap: 8px; }
  .drv-cta-btn .drv-cta-arrow { width: 28px; height: 28px; }
  .drv-cta-btn .drv-cta-arrow::after { width: 18px; }
  .drv-why__cta-box { padding: 24px 14px; }
}