/* =========================================================
   杜の美透液C35 LP - Main Stylesheet
   Mobile-first / 10 sections + sticky CTA + footer
   ========================================================= */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #1B4B8F;
  --color-primary-dark: #133968;
  --color-primary-light: #3A6BAE;
  --color-accent: #E8743B;
  --color-accent-dark: #C85F2C;
  --color-bg-sub: #F5F8FB;
  --color-bg-soft: #FAFBFD;
  --color-text: #1A1A1A;
  --color-text-sub: #555555;
  --color-text-muted: #8A8A8A;
  --color-border: #E5E5E5;
  --color-border-strong: #CCD5E0;
  --color-success: #2E7D5B;
  --color-warning: #C44848;
  --color-white: #FFFFFF;
  --color-gold: #C9A961;

  --shadow-sm: 0 2px 6px rgba(20, 40, 80, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 40, 80, 0.08);
  --shadow-lg: 0 8px 28px rgba(20, 40, 80, 0.12);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --max-width: 1080px;
  --gutter: 20px;

  --font-base: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans",
    "Yu Gothic", Meiryo, sans-serif;
  --font-serif: "Noto Serif JP", "Yu Mincho", "YuMincho", serif;

  --easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Sticky CTA 用の下部余白 (モバイル) */
  padding-bottom: 80px;
}

img, picture, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ---------- Layout Utilities ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: 48px 0;
}

.section--alt {
  background-color: var(--color-bg-sub);
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  text-align: center;
  color: var(--color-text);
}

.section-title__sub {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 8px;
  letter-spacing: 0.08em;
}

.section-lead {
  font-size: 15px;
  line-height: 1.8;
  text-align: center;
  color: var(--color-text-sub);
  margin-bottom: 32px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-divider {
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 0 auto 28px;
  border-radius: var(--radius-pill);
}

/* ---------- Placeholder (画像差替え前の灰色プレースホルダー) ---------- */
.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #EEF2F7 0%, #D8DFE8 100%);
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  letter-spacing: 0.05em;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 16px;
  aspect-ratio: 4 / 5;
  position: relative;
  overflow: hidden;
}

.placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(255,255,255,0.4) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.4) 75%),
    linear-gradient(45deg, rgba(255,255,255,0.4) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.4) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  opacity: 0.3;
  pointer-events: none;
}

.placeholder > span {
  position: relative;
  z-index: 1;
  background: rgba(255,255,255,0.85);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
}

.placeholder--square { aspect-ratio: 1 / 1; }
.placeholder--wide { aspect-ratio: 16 / 9; }
.placeholder--portrait { aspect-ratio: 3 / 4; }
.placeholder--badge {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  transition: transform 0.15s var(--easing), box-shadow 0.15s var(--easing), background-color 0.15s var(--easing);
  min-height: 56px;
  width: 100%;
  letter-spacing: 0.02em;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-md), inset 0 -3px 0 rgba(0,0,0,0.12);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg), inset 0 -3px 0 rgba(0,0,0,0.12);
}

.btn--line {
  background-color: #06C755;
  color: var(--color-white);
  box-shadow: var(--shadow-md), inset 0 -3px 0 rgba(0,0,0,0.12);
}

.btn--line:hover {
  background-color: #05A648;
  transform: translateY(-1px);
}

.btn--ghost {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--ghost:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--lg {
  font-size: 17px;
  padding: 20px 28px;
  min-height: 64px;
}

.btn__caption {
  display: block;
  font-size: 11px;
  font-weight: 500;
  opacity: 0.92;
  margin-top: 2px;
  letter-spacing: 0;
}

.btn-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 380px;
  margin: 0 auto;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 var(--gutter);
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-header__brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.site-header__brand small {
  display: block;
  font-size: 9px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-top: 2px;
}

.site-header__cta {
  font-size: 12px;
  font-weight: 700;
  padding: 8px 16px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-pill);
  transition: background-color 0.15s var(--easing);
}

.site-header__cta:hover {
  background-color: var(--color-accent-dark);
}

/* =========================================================
   01. ファーストビュー (Hero)
   ========================================================= */
.hero {
  background: linear-gradient(180deg, #EDF2F8 0%, #FFFFFF 100%);
  padding: 32px 0 48px;
  position: relative;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  background-color: rgba(27, 75, 143, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.hero__eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

.hero__headline {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  color: var(--color-text);
}

.hero__headline strong {
  color: var(--color-primary);
  font-weight: 700;
  position: relative;
}

.hero__headline em {
  font-style: normal;
  color: var(--color-accent);
  font-weight: 700;
}

.hero__subcopy {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}

.hero__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.hero__highlight {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-white);
  border: 1px solid var(--color-border-strong);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.hero__visual {
  position: relative;
  margin: 24px 0;
}

.hero__visual-main {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  margin: 0 auto;
  max-width: 320px;
}

.hero__product {
  width: 100%;
  height: 100%;
}

.hero__badge {
  position: absolute;
  top: 8px;
  right: -8px;
  width: 96px;
  height: 96px;
  background: radial-gradient(circle at 30% 30%, #FFFFFF, #F2F5FA);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  box-shadow: var(--shadow-md);
  padding: 4px;
}

.hero__badge strong {
  display: block;
  font-size: 13px;
  margin-top: 2px;
}

.hero__pharmacist {
  position: absolute;
  bottom: -12px;
  left: -8px;
  width: 100px;
  height: 120px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 3px solid var(--color-white);
}

.hero__cta {
  margin-top: 28px;
}

.hero__trust {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-sub);
  line-height: 1.4;
}

.hero__trust-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  background-color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
}

/* =========================================================
   02. 悩み共感 (Sympathy)
   ========================================================= */
.sympathy {
  background-color: var(--color-bg-sub);
}

.sympathy__list {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sympathy__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 500;
}

.sympathy__check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.sympathy__caption {
  text-align: center;
  margin-top: 32px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.sympathy__caption strong {
  display: block;
  font-size: 18px;
  margin-top: 8px;
  color: var(--color-text);
}

/* =========================================================
   03. 解決策提示 (Solution)
   ========================================================= */
.solution {
  background: linear-gradient(180deg, #FFFFFF 0%, #EDF2F8 100%);
  text-align: center;
}

.solution__answer {
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 8px;
}

.solution__copy {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 32px;
}

.solution__copy em {
  font-style: normal;
  color: var(--color-accent);
}

.solution__pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.solution__pillar {
  background-color: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  position: relative;
}

.solution__pillar-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  background-color: var(--color-bg-sub);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.solution__pillar-number {
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-primary);
  margin: 8px 0;
  letter-spacing: -0.02em;
}

.solution__pillar-number small {
  font-size: 28px;
  font-weight: 700;
}

.solution__pillar-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.solution__pillar-desc {
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 1.6;
}

.solution__cross {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
  text-align: center;
  padding: 4px 0;
}

/* =========================================================
   04. 成分詳細 (Ingredients)
   ========================================================= */
.ingredients__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.ingredient-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 14px;
  padding: 14px;
  align-items: center;
  transition: transform 0.2s var(--easing), box-shadow 0.2s var(--easing);
}

.ingredient-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ingredient-card--featured {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, #FFFFFF 0%, #F0F5FB 100%);
}

.ingredient-card__visual {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
}

.ingredient-card__body {
  flex: 1;
  min-width: 0;
}

.ingredient-card__no {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

.ingredient-card__name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.3;
}

.ingredient-card__name small {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-left: 4px;
  vertical-align: middle;
}

.ingredient-card__desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--color-text-sub);
}

.price-justify {
  background-color: var(--color-bg-sub);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  text-align: center;
}

.price-justify__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.price-justify__compare {
  font-size: 13px;
  margin-bottom: 12px;
  color: var(--color-text-sub);
}

.price-justify__compare strong {
  font-size: 20px;
  color: var(--color-text);
  font-weight: 700;
}

.price-justify__arrow {
  display: block;
  font-size: 20px;
  margin: 8px 0;
  color: var(--color-accent);
}

.price-justify__ours {
  font-size: 14px;
  font-weight: 600;
}

.price-justify__ours strong {
  font-size: 26px;
  color: var(--color-accent);
  font-weight: 800;
  margin-right: 4px;
}

/* =========================================================
   05. vs オバジ比較表
   ========================================================= */
.comparison {
  background-color: var(--color-bg-sub);
}

.comparison__wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
  margin: 0 calc(var(--gutter) * -1);
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.comparison__table {
  width: 100%;
  min-width: 520px;
  border-collapse: separate;
  border-spacing: 0;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  font-size: 12px;
}

.comparison__table th,
.comparison__table td {
  padding: 12px 10px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.5;
}

.comparison__table th {
  font-weight: 700;
  background-color: #F0F4F9;
  font-size: 11px;
  color: var(--color-text-sub);
}

.comparison__table th[scope="row"] {
  text-align: left;
  background-color: #F8FAFC;
  white-space: nowrap;
  color: var(--color-text);
}

.comparison__col--ours {
  background-color: rgba(27, 75, 143, 0.06) !important;
  color: var(--color-primary);
  font-weight: 700;
  position: relative;
}

.comparison__col-header--ours {
  background-color: var(--color-primary) !important;
  color: var(--color-white) !important;
}

.comparison__col-header--ours small {
  display: block;
  font-size: 9px;
  font-weight: 500;
  opacity: 0.9;
  margin-top: 2px;
}

.comparison__highlight {
  color: var(--color-primary);
  font-weight: 700;
}

.comparison__weak {
  color: var(--color-warning);
  font-weight: 500;
  font-size: 11px;
}

.comparison__note {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 16px;
}

/* =========================================================
   06. 権威性 (Authority)
   ========================================================= */
.authority {
  background-color: var(--color-white);
}

.authority__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

.authority__visual {
  position: relative;
}

.authority__quote {
  background-color: var(--color-bg-sub);
  border-left: 4px solid var(--color-primary);
  padding: 20px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 16px;
  line-height: 1.7;
  font-weight: 500;
  margin-bottom: 20px;
  color: var(--color-text);
  position: relative;
}

.authority__quote::before {
  content: "“";
  position: absolute;
  top: -4px;
  left: 10px;
  font-size: 40px;
  color: var(--color-primary);
  font-family: serif;
  line-height: 1;
  opacity: 0.4;
}

.authority__body {
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}

.authority__profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.authority__profile-photo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
}

.authority__profile-name {
  font-size: 14px;
  font-weight: 700;
}

.authority__profile-role {
  font-size: 11px;
  color: var(--color-text-sub);
  margin-top: 2px;
}

.authority__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.authority__stat {
  background-color: var(--color-bg-sub);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
}

.authority__stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.authority__stat-number small {
  font-size: 14px;
}

.authority__stat-label {
  font-size: 11px;
  color: var(--color-text-sub);
  font-weight: 600;
}

/* =========================================================
   07. 社会的証明 (Social Proof)
   ========================================================= */
.proof {
  background-color: var(--color-bg-sub);
}

.proof__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.proof-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.proof-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.proof-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
}

.proof-card__name {
  font-size: 13px;
  font-weight: 700;
}

.proof-card__meta {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.proof-card__rating {
  margin-top: 4px;
  color: var(--color-gold);
  font-size: 14px;
  letter-spacing: 2px;
}

.proof-card__body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
}

.proof-card__disclaimer {
  display: block;
  font-size: 10px;
  color: var(--color-text-muted);
  margin-top: 12px;
  text-align: right;
}

.proof__monitor-cta {
  text-align: center;
  margin-top: 24px;
  padding: 20px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-primary);
}

.proof__monitor-cta strong {
  display: block;
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.proof__monitor-cta span {
  font-size: 12px;
  color: var(--color-text-sub);
}

/* =========================================================
   08. 使用方法 (How to use) + 肌タイプ診断
   ========================================================= */
.howto__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 36px;
}

.howto-step {
  background-color: var(--color-bg-sub);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
}

.howto-step__time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-white);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.howto-step__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.howto-step__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.howto-step__list li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-sub);
  padding-left: 20px;
  position: relative;
}

.howto-step__list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

/* 肌タイプ診断 */
.diagnose {
  background: linear-gradient(135deg, #1B4B8F 0%, #2D5DA8 100%);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
}

.diagnose__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.diagnose__lead {
  font-size: 13px;
  opacity: 0.9;
  margin-bottom: 20px;
  line-height: 1.7;
}

.diagnose__options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.diagnose__option {
  background-color: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 8px;
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s var(--easing);
}

.diagnose__option:hover,
.diagnose__option.is-active {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.diagnose__result {
  background-color: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 16px;
  text-align: left;
  display: none;
}

.diagnose__result.is-shown {
  display: block;
  animation: fadeIn 0.3s ease;
}

.diagnose__result-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.diagnose__result-body {
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 14px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   09. CTA セクション
   ========================================================= */
.cta-section {
  background: linear-gradient(135deg, #FFF6F0 0%, #FFFFFF 100%);
}

.cta-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px 20px;
  border: 2px solid var(--color-accent);
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.cta-card__ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.cta-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  margin-top: 8px;
}

.cta-card__lead {
  font-size: 13px;
  color: var(--color-text-sub);
  margin-bottom: 20px;
  line-height: 1.7;
}

.cta-price {
  margin-bottom: 24px;
  padding: 16px;
  background-color: var(--color-bg-sub);
  border-radius: var(--radius-md);
}

.cta-price__regular {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.cta-price__regular s {
  font-weight: 600;
  margin-left: 4px;
}

.cta-price__main {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

.cta-price__label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-white);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.cta-price__amount {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  line-height: 1;
}

.cta-price__amount small {
  font-size: 18px;
  font-weight: 700;
  margin-left: 2px;
}

.cta-price__off {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(232, 116, 59, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-top: 4px;
}

.cta-price__second {
  font-size: 12px;
  color: var(--color-text-sub);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
}

.cta-card__notes {
  margin-top: 16px;
  font-size: 11px;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
}

/* =========================================================
   10. 安心保証 (Guarantee)
   ========================================================= */
.guarantee {
  background-color: var(--color-bg-sub);
}

.guarantee__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}

.guarantee-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}

.guarantee-item__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
}

.guarantee-item__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.guarantee-item__desc {
  font-size: 12px;
  line-height: 1.65;
  color: var(--color-text-sub);
}

/* =========================================================
   Final CTA
   ========================================================= */
.final-cta {
  background: linear-gradient(180deg, #133968 0%, #1B4B8F 100%);
  color: var(--color-white);
  text-align: center;
  padding: 56px 0;
}

.final-cta__title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.5;
}

.final-cta__lead {
  font-size: 14px;
  opacity: 0.92;
  margin-bottom: 28px;
  line-height: 1.8;
}

/* =========================================================
   Sticky CTA (mobile bottom bar)
   ========================================================= */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-top: 1px solid var(--color-border);
  padding: 10px 12px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  display: flex;
  gap: 8px;
  transform: translateY(100%);
  transition: transform 0.3s var(--easing);
  box-shadow: 0 -4px 16px rgba(20, 40, 80, 0.08);
}

.sticky-cta.is-visible {
  transform: translateY(0);
}

.sticky-cta .btn {
  min-height: 50px;
  font-size: 13px;
  padding: 10px 12px;
  flex: 1;
}

.sticky-cta .btn__caption {
  font-size: 9px;
  margin-top: 1px;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background-color: #0F2746;
  color: rgba(255, 255, 255, 0.85);
  padding: 40px 0 24px;
  font-size: 12px;
}

.site-footer__brand {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 4px;
}

.site-footer__tagline {
  font-size: 11px;
  opacity: 0.7;
  margin-bottom: 20px;
}

.site-footer__company {
  line-height: 1.8;
  margin-bottom: 20px;
}

.site-footer__company dt {
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}

.site-footer__company dd {
  margin-bottom: 8px;
  opacity: 0.78;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 16px;
}

.site-footer__links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 12px;
}

.site-footer__disclaimer {
  font-size: 10px;
  line-height: 1.7;
  opacity: 0.6;
  margin-bottom: 16px;
}

.site-footer__copyright {
  font-size: 10px;
  opacity: 0.5;
  text-align: center;
}

/* =========================================================
   Responsive — tablet (768px+)
   ========================================================= */
@media (min-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 30px;
  }

  .section-lead {
    font-size: 16px;
  }

  body {
    padding-bottom: 0; /* スティッキーCTAはモバイルのみ */
  }

  .sticky-cta {
    display: none;
  }

  /* Hero 2カラム */
  .hero {
    padding: 56px 0 72px;
  }

  .hero__inner {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .hero__headline {
    font-size: 36px;
  }

  .hero__subcopy {
    font-size: 15px;
  }

  .hero__visual {
    margin: 0;
  }

  .hero__visual-main {
    max-width: 380px;
  }

  .hero__badge {
    width: 120px;
    height: 120px;
    font-size: 11px;
  }

  .hero__badge strong {
    font-size: 16px;
  }

  .hero__pharmacist {
    width: 130px;
    height: 160px;
    bottom: -20px;
  }

  .hero__trust {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Solution */
  .solution__copy {
    font-size: 32px;
  }

  .solution__pillars {
    grid-template-columns: 1fr auto 1fr;
    align-items: stretch;
    gap: 24px;
  }

  .solution__cross {
    align-self: center;
    font-size: 32px;
    padding: 0 8px;
  }

  .solution__pillar-number {
    font-size: 72px;
  }

  /* Ingredients */
  .ingredients__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .ingredient-card__visual {
    width: 96px;
    height: 96px;
  }

  /* Authority */
  .authority__inner {
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
  }

  .authority__quote {
    font-size: 18px;
    padding: 24px 28px;
  }

  /* Proof */
  .proof__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Howto */
  .howto__steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* CTA */
  .cta-price__amount {
    font-size: 56px;
  }

  .cta-card {
    padding: 36px 32px;
  }

  /* Guarantee */
  .guarantee__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* Final CTA */
  .final-cta__title {
    font-size: 28px;
  }

  /* Footer */
  .site-footer__inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: start;
  }

  /* Comparison */
  .comparison__table {
    font-size: 14px;
  }

  .comparison__table th,
  .comparison__table td {
    padding: 16px 12px;
  }
}

/* =========================================================
   Responsive — desktop (1024px+)
   ========================================================= */
@media (min-width: 1024px) {
  .hero__headline {
    font-size: 42px;
  }

  .solution__copy {
    font-size: 36px;
  }

  .section-title {
    font-size: 34px;
  }

  .ingredients__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Btn stack horizontal on desktop CTA blocks */
  .hero__cta .btn-stack,
  .final-cta .btn-stack {
    flex-direction: row;
    max-width: 600px;
  }

  .hero__cta .btn,
  .final-cta .btn {
    width: auto;
    flex: 1;
  }
}

/* =========================================================
   Print
   ========================================================= */
@media print {
  .sticky-cta,
  .site-header__cta {
    display: none;
  }
}

/* =========================================================
   Reduce motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}