/* ========================================
   WonderPAW Studio - 中小企業AI業務効率化伴走スタジオ
   LP Stylesheet v1.0
   ベース: ベージュ + ネイビーグレー + アクセント橙
   フォントサイズ最小16px (本文) — feedback_html_min_font_size 準拠
   ======================================== */

:root {
  --c-bg: #FAFAF8;
  --c-bg-alt: #F4F1EC;
  --c-card: #FFFFFF;
  --c-text: #1F2937;
  --c-text-sub: #4B5563;
  --c-text-muted: #6B7280;
  --c-accent: #C4986B;
  --c-accent-hover: #B07D55;
  --c-accent-pale: #EFE6D9;
  --c-orange: #E97B3C;
  --c-border: #E5E0D6;

  --font-sans-jp: 'Noto Sans JP', system-ui, -apple-system, sans-serif;
  --font-sans-en: 'Inter', system-ui, -apple-system, sans-serif;

  --container: 1080px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(31, 41, 55, 0.06), 0 1px 2px rgba(31, 41, 55, 0.04);
  --shadow-md: 0 4px 12px rgba(31, 41, 55, 0.08), 0 2px 4px rgba(31, 41, 55, 0.04);
  --shadow-lg: 0 12px 32px rgba(31, 41, 55, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans-jp);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

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

a {
  color: var(--c-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover { color: var(--c-accent-hover); }

/* ========================================
   Header
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--c-text);
}

.logo-mark {
  font-family: var(--font-sans-en);
  font-size: 20px;
  color: var(--c-accent);
  letter-spacing: -0.05em;
}

.logo-text {
  font-family: var(--font-sans-en);
  font-size: 17px;
  letter-spacing: -0.01em;
}

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

.nav a {
  color: var(--c-text-sub);
  font-size: 15px;
  font-weight: 500;
}

.nav a:hover { color: var(--c-accent); }

.nav-cta {
  background: var(--c-accent);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
}

.nav-cta:hover {
  background: var(--c-accent-hover);
  color: #fff !important;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  padding: 96px 0 80px;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-accent-pale) 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--c-accent) 0%, transparent 70%);
  opacity: 0.12;
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-sans-en);
  font-size: 14px;
  font-weight: 500;
  color: var(--c-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin-bottom: 28px;
}

.hero-lead {
  font-size: 17px;
  line-height: 2;
  color: var(--c-text-sub);
  margin-bottom: 40px;
  max-width: 720px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  text-align: center;
  min-height: 52px;
}

.btn-primary {
  background: var(--c-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--c-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border);
}

.btn-secondary:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.btn-submit {
  width: 100%;
  padding: 18px 32px;
  font-size: 17px;
}

/* ========================================
   Section common
   ======================================== */
section {
  padding: 96px 0;
}

.section-title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-lead {
  font-size: 16px;
  color: var(--c-text-sub);
  text-align: center;
  margin-bottom: 56px;
}

/* ========================================
   Empathy
   ======================================== */
.empathy {
  background: var(--c-card);
}

.empathy .section-title {
  margin-bottom: 56px;
}

.empathy-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.empathy-list li {
  background: var(--c-bg);
  padding: 32px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.empathy-icon {
  font-family: var(--font-sans-en);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.empathy-list p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
}

.empathy-cta {
  text-align: center;
  font-size: 16px;
  color: var(--c-text-sub);
}

/* ========================================
   Solution
   ======================================== */
.solution {
  background: var(--c-bg-alt);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 64px;
}

.step {
  background: var(--c-card);
  padding: 28px 24px;
  border-radius: var(--radius);
  position: relative;
}

.step-num {
  display: inline-block;
  font-family: var(--font-sans-en);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-sub);
}

.solution-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.point {
  background: var(--c-card);
  padding: 28px;
  border-radius: var(--radius);
  border-left: 4px solid var(--c-accent);
}

.point h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c-text);
}

.point p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-sub);
}

/* ========================================
   Service / Plans
   ======================================== */
.service {
  background: var(--c-card);
}

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.plan {
  background: var(--c-bg);
  padding: 36px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  position: relative;
  display: flex;
  flex-direction: column;
}

.plan-featured {
  background: var(--c-card);
  border: 2px solid var(--c-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-8px);
}

.plan-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.plan-header { margin-bottom: 20px; }

.plan-tag {
  font-family: var(--font-sans-en);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.plan-name {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.plan-price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px; }
.price-num {
  font-family: var(--font-sans-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
}
.price-unit { font-size: 14px; color: var(--c-text-sub); }
.plan-note { font-size: 13px; color: var(--c-text-muted); margin-top: 4px; }

.plan-target {
  font-size: 14px;
  color: var(--c-text-sub);
  padding: 12px 16px;
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  line-height: 1.7;
}

.plan-includes {
  list-style: none;
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-includes li {
  font-size: 15px;
  line-height: 1.7;
  padding: 10px 0 10px 24px;
  position: relative;
  border-bottom: 1px solid var(--c-border);
}

.plan-includes li:last-child { border-bottom: 0; }

.plan-includes li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-accent-pale);
  border: 2px solid var(--c-accent);
}

.plan-delivery {
  font-size: 13px;
  color: var(--c-text-muted);
  padding-top: 12px;
  border-top: 1px solid var(--c-border);
}

.service-note {
  text-align: center;
  font-size: 14px;
  color: var(--c-text-muted);
  margin-top: 16px;
}

/* ========================================
   Works
   ======================================== */
.works {
  background: var(--c-bg-alt);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.work {
  background: var(--c-card);
  padding: 32px 28px;
  border-radius: var(--radius);
  border-top: 4px solid var(--c-accent);
}

.work-label {
  font-family: var(--font-sans-en);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.work-name {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.work-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-sub);
}

/* ========================================
   Flow
   ======================================== */
.flow {
  background: var(--c-card);
}

.flow-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: flow;
}

.flow-steps li {
  background: var(--c-bg);
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
}

.flow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-sans-en);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.flow-steps h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.flow-steps p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-sub);
}

.flow-note {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.7;
}

/* ========================================
   FAQ
   ======================================== */
.faq {
  background: var(--c-bg-alt);
}

.faq-item {
  background: var(--c-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--c-border);
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 56px 20px 24px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  list-style: none;
  line-height: 1.6;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  font-weight: 300;
  color: var(--c-accent);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 24px 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-sub);
}

/* ========================================
   Contact form
   ======================================== */
.contact {
  background: var(--c-card);
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c-text);
}

.required {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  background: var(--c-orange);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 6px;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  font-family: var(--font-sans-jp);
  color: var(--c-text);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-pale);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
}

.form-note {
  text-align: center;
  font-size: 14px;
  color: var(--c-text-muted);
  margin-top: 16px;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--c-text);
  color: #D1D5DB;
  padding: 64px 0 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-logo {
  font-family: var(--font-sans-en);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.footer-tagline {
  font-size: 14px;
  line-height: 1.7;
  color: #9CA3AF;
}

.footer-contact p {
  font-size: 14px;
  line-height: 2;
  color: #D1D5DB;
}

.footer-label {
  display: inline-block;
  min-width: 64px;
  font-size: 12px;
  color: #9CA3AF;
  letter-spacing: 0.05em;
  margin-right: 8px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid #374151;
  border-bottom: 1px solid #374151;
  margin-bottom: 24px;
}

.footer-nav a {
  font-size: 14px;
  color: #D1D5DB;
}

.footer-nav a:hover { color: #fff; }

.footer-copyright {
  font-family: var(--font-sans-en);
  font-size: 13px;
  color: #6B7280;
  text-align: center;
  letter-spacing: 0.02em;
}

/* ========================================
   Responsive
   ======================================== */
.pc-only { display: inline; }

@media (max-width: 768px) {
  section { padding: 64px 0; }

  .container { padding: 0 20px; }

  .header-inner { height: 60px; }

  .nav { gap: 16px; }

  .nav a:not(.nav-cta) { display: none; }

  .nav-cta { padding: 8px 16px; font-size: 14px; }

  .hero { padding: 64px 0 56px; }

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

  .hero-cta .btn { width: 100%; }

  .pc-only { display: none; }

  .plan-featured { transform: none; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  section { padding: 48px 0; }
  .hero { padding: 48px 0 40px; }
}