:root {
  --color-primary: #2d5a3f;
  --color-primary-dark: #1e4030;
  --color-primary-light: #c8e6d0;
  --color-accent: #3a7d44;
  --color-accent-light: #a8d5b0;
  --color-accent-bg: #f0f8f2;
  --color-progress: #3a7d44;
  --color-cta: #3a7d44;
  --color-cta-dark: #2d6a30;
  --color-text: #222;
  --color-text-light: #777;
  --color-white: #fff;
  --color-bg: #f5f7f5;
  --color-bg-warm: #eef3ef;
  --color-card: rgba(255, 255, 255, 0.97);
  --color-overlay: rgba(20, 40, 25, 0.4);
  --shadow-card: 0 2px 16px rgba(45, 90, 63, 0.08);
  --shadow-button: 0 4px 20px rgba(58, 125, 68, 0.35);
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 50px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  -webkit-font-smoothing: antialiased;
}

/* ===== LP Wrapper ===== */
.lp-wrapper {
  width: 100%;
  max-width: 480px;
  min-height: 100vh;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  background: var(--color-white);
}

/* ===== Step Bar ===== */
.step-bar {
  display: flex;
  gap: 8px;
  padding: 16px 24px 0;
  position: relative;
  z-index: 10;
  background: var(--color-bg-warm);
}

.step-bar__item {
  flex: 1;
  height: 5px;
  background: #e0d6cc;
  border-radius: 3px;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.step-bar__item.active {
  background: var(--color-primary);
  box-shadow: 0 0 6px rgba(30, 58, 95, 0.3);
}

/* ===== Header ===== */
.lp-header {
  background: var(--color-bg-warm);
  text-align: center;
  padding: 16px 24px 24px;
  color: var(--color-text);
}

.lp-header__sub {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  letter-spacing: 0.08em;
}

.lp-header__badge {
  display: inline-block;
  background: var(--color-white);
  color: var(--color-accent);
  padding: 5px 18px;
  border-radius: var(--radius-xl);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 8px;
  border: 1px solid #e0d6cc;
  letter-spacing: 0.05em;
}

.lp-header__title {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

/* ===== Main ===== */
.lp-main {
  position: relative;
  min-height: 500px;
}

.lp-main__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #f5f0eb 0%, #ebe4db 100%);
  z-index: 0;
}

.lp-main__bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(60, 40, 30, 0.08);
}

.lp-content {
  position: relative;
  z-index: 1;
}

/* ===== Step Screens ===== */
.step-screen {
  display: none;
  animation: fadeSlideIn 0.5s ease;
}

.step-screen.active {
  display: block;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== Question Area ===== */
.question-area {
  padding: 24px 20px 32px;
}

.question-area__title {
  color: var(--color-text);
  font-size: 18px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}

/* ===== Campaign Box ===== */
.campaign-box {
  text-align: center;
  margin-bottom: 20px;
}

.campaign-box__ribbon {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 22px;
  border-radius: var(--radius-xl);
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.campaign-box__name {
  display: inline-block;
  background: var(--color-white);
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 700;
  padding: 6px 22px;
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  border: 2px solid var(--color-primary);
}

.campaign-box__price {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.campaign-box__price-original {
  font-size: 18px;
  color: var(--color-text-light);
  text-decoration: line-through;
  font-weight: 700;
}

.campaign-box__price-arrow {
  color: var(--color-text-light);
  font-size: 14px;
}

.campaign-box__price-off {
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-xl);
}

.campaign-box__price-new {
  font-size: 44px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
}

.campaign-box__price-new small {
  font-size: 18px;
}

/* ===== Question Card ===== */
.question-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.question-card__header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.question-card__text {
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  flex: 1;
}

.question-card__nav {
  display: flex;
  gap: 8px;
  margin-left: 12px;
}

.nav-arrow {
  width: 38px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  font-size: 22px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  line-height: 1;
  backdrop-filter: blur(4px);
}

.nav-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: var(--color-white);
  transform: scale(1.08);
}

.nav-arrow:active {
  transform: scale(0.92);
}

.question-card__options {
  padding: 16px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ===== Transition Hint ===== */
.question-card__hint {
  text-align: center;
  padding: 0 20px 16px;
  font-size: 12px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.question-card__hint-arrow {
  display: inline-block;
  animation: bounceRight 1.2s ease infinite;
  font-size: 14px;
}

@keyframes bounceRight {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

/* ===== Option Buttons ===== */
.option-btn {
  width: 100%;
  padding: 15px 16px;
  border: 2px solid #e8e0d8;
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.option-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.option-btn:hover {
  border-color: var(--color-primary-light);
  background: #f0f3f8;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(30, 58, 95, 0.1);
}

.option-btn:active {
  transform: translateY(0) scale(0.98);
}

.option-btn.selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  box-shadow: 0 2px 12px rgba(30, 58, 95, 0.25);
  transform: scale(1.02);
}

.option-btn.selected::before {
  content: "\2713";
  margin-right: 6px;
  font-weight: 700;
}

/* ===== Result Area (Step 5) ===== */
.result-area {
  padding: 24px 20px 32px;
  position: relative;
}


.result-area__thanks {
  color: var(--color-text);
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  line-height: 1.7;
  margin-bottom: 16px;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ===== Result Detail ===== */
.result-detail {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  margin: 16px 0 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.result-detail__title {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  padding: 8px 20px;
  border-radius: var(--radius-md);
  margin: 0 auto 8px;
  width: 100%;
}

.result-detail__plus-label {
  text-align: center;
  font-size: 20px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  font-weight: 600;
}

.result-detail__images {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
}

.result-detail__item {
  text-align: center;
  flex: 1;
}

.result-detail__img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--color-bg-warm);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--color-text-light);
  margin-bottom: 6px;
  border: 1px solid #e8e0d8;
}

.result-detail__item p {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 2px;
  border-radius: 4px;
}

.result-detail__plus {
  color: var(--color-text-light);
  font-size: 16px;
  font-weight: 700;
  margin-top: 20px;
  align-self: center;
}

/* ===== CTA Button ===== */
.cta-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 18px 24px;
  background: linear-gradient(135deg, var(--color-cta), var(--color-cta-dark));
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-xl);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-button);
  transition: transform 0.2s, box-shadow 0.2s;
  animation: ctaPulse 2s ease infinite;
  letter-spacing: 0.05em;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(30, 58, 95, 0.35);
}

.cta-button:active {
  transform: translateY(0);
}

.cta-button__arrow {
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
}

@keyframes ctaPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

/* ===== CTA Sub Text ===== */
.cta-sub {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 8px;
}

/* ===== Footer ===== */
.lp-footer {
  padding: 24px 24px;
  text-align: center;
  background: var(--color-bg-warm);
}

.lp-footer__links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 24px;
}

.lp-footer__links a {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.lp-footer__links a:hover {
  text-decoration: underline;
  color: var(--color-primary);
}

/* ===== Timeout Bar ===== */
.timeout-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  height: 3px;
  background: rgba(0, 0, 0, 0.06);
  z-index: 100;
}

.timeout-bar__fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform linear;
}

.timeout-bar__fill.running {
  transform: scaleX(1);
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  .lp-wrapper {
    max-width: 100%;
  }

  .timeout-bar {
    max-width: 100%;
  }
}