/* ============================================
   LLMO診断ツール - TRILIA準拠スタイル
   ============================================ */

:root {
  --color-primary: #004aad;
  --color-primary-dark: rgba(0, 56, 130, 1);
  --color-bg: #fdfdfd;
  --color-text: #333;
  --color-text-light: #666;
  --color-border: #e0e0e0;
  --color-accent-light: #d8ffff;
  --color-pass: #3cd250;
  --color-warn: #ffa537;
  --color-fail: #f36060;
  --font-main: "Noto Sans JP", sans-serif;
  --width-container: 1200px;
  --radius-button: 80px;
  --radius-card: 12px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.12);
}

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

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-width: 0;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

/* Container */
.container {
  max-width: var(--width-container);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ============================================
   Header (trilia.co.jp 準拠)
   ============================================ */
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.site-header__inner {
  max-width: var(--width-container);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo img {
  height: 28px;
  width: auto;
  display: block;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-header__nav a {
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

.site-header__nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s;
}

.site-header__nav a:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.site-header__nav a:hover::after {
  width: 100%;
}

/* ハンバーガーメニュー（SPのみ） */
.site-header__menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
  position: relative;
  padding: 0;
}

.site-header__menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  left: 0;
  transition: all 0.3s;
}

.site-header__menu-btn span:nth-child(1) { top: 0; }
.site-header__menu-btn span:nth-child(2) { top: 9px; }
.site-header__menu-btn span:nth-child(3) { top: 18px; }

.site-header__menu-btn.is-open span:nth-child(1) {
  top: 9px;
  transform: rotate(45deg);
}

.site-header__menu-btn.is-open span:nth-child(2) {
  opacity: 0;
}

.site-header__menu-btn.is-open span:nth-child(3) {
  top: 9px;
  transform: rotate(-45deg);
}

/* ============================================
   Section Common
   ============================================ */
.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
  line-height: 1.5;
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 15px;
  margin-bottom: 48px;
  max-width: 640px;
  line-height: 1.8;
}

/* center variants */
.categories-section .section-label,
.categories-section .section-title,
.categories-section .section-subtitle,
.how-section .section-label,
.how-section .section-title { text-align: center; }
.categories-section .section-subtitle { margin-left: auto; margin-right: auto; }

/* ============================================
   How it works
   ============================================ */
.how-section {
  padding: 80px 0;
  background: #fff;
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 48px;
  counter-reset: none;
}

.how-step {
  position: relative;
  padding-top: 20px;
}

.how-step__num {
  font-size: 48px;
  font-weight: 700;
  color: rgba(0, 74, 173, 0.07);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.how-step__title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.how-step__text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* connector line between steps (PC) */
.how-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 40px;
  right: -24px;
  width: 1px;
  height: 48px;
  background: var(--color-border);
}

/* ============================================
   Categories
   ============================================ */
.categories-section {
  padding: 80px 0;
  background: #f8f9fb;
}

.cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.cat-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}

.cat-item:nth-child(odd) {
  border-right: 1px solid var(--color-border);
}

.cat-item:hover {
  background: #fff;
}

.cat-item__num {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
  width: 24px;
}

.cat-item__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  flex-shrink: 0;
  min-width: 120px;
}

.cat-item__desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ============================================
   Why LLMO
   ============================================ */
.why-section {
  padding: 80px 0;
  background: #fff;
}

.why-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.why-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: 20px;
}

.why-lead {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.9;
}

.why-right {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.why-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid #eee;
}

.why-item:first-child { padding-top: 0; }
.why-item:last-child { border-bottom: none; }

.why-item__kv {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  flex-shrink: 0;
  min-width: 72px;
}

.why-item__kv small {
  font-size: 16px;
  font-weight: 500;
}

.why-item__body strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text);
}

.why-item__body p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
  padding: 80px 0;
  background: #fff;
}

.faq-section .section-title {
  margin-bottom: 48px;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-item__q {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  padding: 20px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}

.faq-item__q::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.faq-item__q::after {
  content: "";
  margin-left: auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-light);
  border-bottom: 2px solid var(--color-text-light);
  transform: rotate(45deg);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item.is-open .faq-item__q::after {
  transform: rotate(-135deg);
}

.faq-item__a {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.9;
  padding: 0 0 20px 40px;
  display: none;
}

.faq-item.is-open .faq-item__a {
  display: block;
}

/* ============================================
   Bottom CTA
   ============================================ */
.bottom-cta {
  padding: 80px 0;
  text-align: center;
  background: #f8f9fb;
  border-top: 1px solid var(--color-border);
}

.bottom-cta__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.5;
}

.bottom-cta__text {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.bottom-cta__button {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 48px;
  border-radius: var(--radius-button);
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.bottom-cta__button:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 80px 0 60px;
  text-align: center;
}

.hero__badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.hero__title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: 16px;
  opacity: 0.85;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* URL Input Form */
.url-form {
  max-width: 680px;
  margin: 0 auto;
}

.url-form__input-group {
  display: flex;
  gap: 12px;
  background: #fff;
  border-radius: var(--radius-button);
  padding: 6px 6px 6px 24px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.url-form__input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  font-family: var(--font-main);
  color: var(--color-text);
  background: transparent;
  min-width: 0;
}

.url-form__input::placeholder {
  color: #aaa;
}

.url-form__button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-button);
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-main);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
}

.url-form__button:hover {
  background: var(--color-primary-dark);
}

.url-form__button:active {
  transform: scale(0.98);
}

.url-form__button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.url-form__error {
  color: #ffb3b3;
  font-size: 13px;
  margin-top: 12px;
  min-height: 20px;
}

.hero__features {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 32px;
  font-size: 14px;
  opacity: 0.85;
}

.hero__features span::before {
  content: "✓ ";
  font-weight: 700;
}

/* ============================================
   Progress Section
   ============================================ */
.progress-section {
  display: none;
  padding: 60px 0;
  text-align: center;
}

.progress-section.is-active { display: block; }

.progress__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--color-primary);
}

.progress__bar-wrap {
  max-width: 600px;
  margin: 0 auto 24px;
  background: #e8eef6;
  border-radius: 8px;
  height: 12px;
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #0066dd);
  border-radius: 8px;
  width: 0%;
  transition: width 0.4s ease;
}

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

.progress__categories {
  max-width: 600px;
  margin: 24px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
  text-align: left;
}

.progress__category {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.progress__category-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  flex-shrink: 0;
}

.progress__category.is-active .progress__category-icon {
  border-color: var(--color-primary);
  animation: pulse 1s infinite;
}

.progress__category.is-done .progress__category-icon {
  border-color: var(--color-pass);
  background: var(--color-pass);
  color: #fff;
}

.progress__category.is-done .progress__category-icon::after {
  content: "✓";
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============================================
   Results Section
   ============================================ */
.results-section {
  display: none;
  padding: 60px 0;
}

.results-section.is-active { display: block; }

/* Summary */
.summary {
  text-align: center;
  margin-bottom: 48px;
}

.summary__gauge-wrap {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto 24px;
}

.summary__gauge-svg {
  width: 220px;
  height: 220px;
  transform: rotate(-90deg);
}

.summary__gauge-bg {
  fill: none;
  stroke: #e8eef6;
  stroke-width: 12;
}

.summary__gauge-fill {
  fill: none;
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s ease, stroke 0.3s;
}

.summary__score-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.summary__score-number {
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

.summary__score-unit {
  font-size: 16px;
  color: var(--color-text-light);
  display: block;
}

.summary__grade {
  display: inline-block;
  font-size: 24px;
  font-weight: 700;
  padding: 8px 32px;
  border-radius: var(--radius-button);
  margin-bottom: 12px;
}

.summary__grade--S { background: #e8f5e9; color: #2e7d32; }
.summary__grade--A { background: #e3f2fd; color: #1565c0; }
.summary__grade--B { background: #fff3e0; color: #e65100; }
.summary__grade--C { background: #fff8e1; color: #f57f17; }
.summary__grade--D { background: #fce4ec; color: #c62828; }
.summary__grade--E { background: #ffebee; color: #b71c1c; }

.summary__comment {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Category Cards Grid */
.category-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.category-card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: box-shadow 0.2s;
}

.category-card:hover {
  box-shadow: var(--shadow-hover);
}

.category-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.category-card__name {
  font-size: 15px;
  font-weight: 700;
}

.category-card__score {
  font-size: 14px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
}

.category-card__score--high { background: #e8f5e9; color: #2e7d32; }
.category-card__score--mid  { background: #fff3e0; color: #e65100; }
.category-card__score--low  { background: #ffebee; color: #c62828; }

.category-card__bar {
  height: 6px;
  background: #e8eef6;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 12px;
}

.category-card__bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s ease;
}

.category-card__bar-fill--high { background: var(--color-pass); }
.category-card__bar-fill--mid  { background: var(--color-warn); }
.category-card__bar-fill--low  { background: var(--color-fail); }

.category-card__stats {
  display: flex;
  gap: 12px;
  font-size: 12px;
}

.category-card__stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.category-card__stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.category-card__stat-dot--pass { background: var(--color-pass); }
.category-card__stat-dot--warn { background: var(--color-warn); }
.category-card__stat-dot--fail { background: var(--color-fail); }

/* ============================================
   Lead Gate
   ============================================ */
.lead-gate {
  background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 100%);
  border-radius: var(--radius-card);
  padding: 48px;
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}

.lead-gate__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.lead-gate__text {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.lead-gate__benefits {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.lead-gate__benefit {
  font-size: 14px;
  color: var(--color-text);
}

.lead-gate__benefit::before {
  content: "✓ ";
  color: var(--color-pass);
  font-weight: 700;
}

#hubspot-form-container {
  max-width: 480px;
  margin: 0 auto;
}

/* ============================================
   Detail Report
   ============================================ */
.detail-report {
  position: relative;
}

.detail-report.is-locked {
  max-height: 400px;
  overflow: hidden;
}

.detail-report.is-locked::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(transparent, var(--color-bg));
  pointer-events: none;
}

.detail-section {
  margin-bottom: 32px;
}

.detail-section__title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  padding: 14px 24px;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.detail-section__title:hover {
  background: var(--color-primary-dark);
}

.detail-section__arrow {
  transition: transform 0.2s;
  font-size: 14px;
}

.detail-section.is-open .detail-section__arrow {
  transform: rotate(180deg);
}

.detail-section__body {
  display: none;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-card) var(--radius-card);
}

.detail-section.is-open .detail-section__body {
  display: block;
}

.check-item {
  padding: 16px 24px;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.check-item:last-child { border-bottom: none; }

.check-item__status {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  margin-top: 2px;
}

.check-item__status--pass { background: var(--color-pass); }
.check-item__status--warn { background: var(--color-warn); }
.check-item__status--fail { background: var(--color-fail); }

.check-item__content { flex: 1; }

.check-item__name {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.check-item__detail {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.check-item__advice {
  font-size: 13px;
  color: var(--color-primary);
  margin-top: 6px;
  padding: 8px 12px;
  background: #f0f5ff;
  border-radius: 6px;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
  margin-top: 48px;
}

.cta-section__title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section__text {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section__form {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 40px 48px;
  text-align: left;
}

@media (max-width: 600px) {
  .cta-section__form {
    padding: 24px 16px;
    border-radius: 8px;
    margin: 0 -4px;
  }
}

.cta-section__button {
  display: inline-block;
  background: #fff;
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 700;
  padding: 16px 48px;
  border-radius: var(--radius-button);
  transition: transform 0.2s, box-shadow 0.2s;
}

.cta-section__button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  text-decoration: none;
}

/* ============================================
   Footer (trilia.co.jp 準拠)
   ============================================ */
.site-footer {
  background: #fff;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 40px 0 24px;
}

.site-footer__inner {
  max-width: var(--width-container);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.site-footer__logo img {
  height: 24px;
  width: auto;
  display: block;
  opacity: 1;
}

.site-footer__nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.site-footer__nav a {
  color: var(--color-text-light);
  font-size: 13px;
  text-decoration: none;
}

.site-footer__nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.site-footer__copy {
  color: #aaa;
  font-size: 12px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 960px) {
  .hero__title { font-size: 28px; }
  .category-cards { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

  .how-steps { grid-template-columns: 1fr; gap: 32px; max-width: 480px; margin-left: auto; margin-right: auto; }
  .how-step::after { display: none; }
  .cat-grid { grid-template-columns: 1fr; }
  .cat-item:nth-child(odd) { border-right: none; }
  .why-layout { grid-template-columns: 1fr; gap: 40px; }

  /* ヘッダー: ナビ非表示、ハンバーガー表示 */
  .site-header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 20px 24px;
    gap: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  }

  .site-header__nav.is-open {
    display: flex;
  }

  .site-header__nav a {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 15px;
  }

  .site-header__nav a::after { display: none; }

  .site-header__nav a:last-child { border-bottom: none; }

  .site-header__menu-btn {
    display: block;
  }

  /* フッター */
  .site-footer__nav { gap: 16px; }
  .site-footer__nav a { font-size: 12px; }
}

@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .site-header__inner { padding: 12px 16px; }
  .site-footer__inner { padding: 0 16px; }
  .site-footer { padding: 32px 0 20px; }
  .cta-section { padding: 48px 16px; }

  .hero { padding: 48px 0 40px; }
  .hero__title { font-size: 22px; }
  .hero__subtitle { font-size: 14px; }
  .hero__features { flex-direction: column; gap: 8px; }

  .url-form__input-group {
    flex-direction: column;
    border-radius: var(--radius-card);
    padding: 12px;
  }

  .url-form__input {
    padding: 12px;
    font-size: 15px;
  }

  .url-form__button {
    width: 100%;
    padding: 14px;
  }

  .progress__categories {
    grid-template-columns: 1fr;
  }

  .category-cards {
    grid-template-columns: 1fr;
  }

  .detail-section__title {
    font-size: 15px;
    padding: 12px 16px;
  }

  .check-item {
    padding: 12px 16px;
  }

  .summary__gauge-wrap {
    width: 180px;
    height: 180px;
  }

  .summary__gauge-svg {
    width: 180px;
    height: 180px;
  }

  .summary__score-number {
    font-size: 44px;
  }

  .section-title { font-size: 20px; }
  .section-subtitle { font-size: 14px; }
  .how-section, .categories-section, .why-section, .faq-section { padding: 48px 0; }
  .faq-item__q { font-size: 14px; }
  .faq-item__a { font-size: 13px; padding-left: 40px; }
  .cat-item { padding: 16px; gap: 10px; }
  .cat-item__name { font-size: 14px; min-width: 0; }
  .cat-item__desc { display: none; }
  .why-title { font-size: 22px; }
  .why-item__kv { font-size: 26px; min-width: 56px; }
  .why-item { gap: 14px; }

  .cta-section__title { font-size: 20px; }
  .cta-section__button { padding: 14px 32px; font-size: 15px; }
}