/* =========================
   Base & Design Tokens
   優しい印象：柔らかい角丸 / 淡い影 / 余白広め
========================= */
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans JP",sans-serif;
  line-height:1.65;
  color:var(--ink-900);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}

:root{
  --container:1200px;
  --space-0:0;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--space-20:80px;--space-24:96px;
  --radius-10:10px;--radius-12:12px;--radius-16:16px;--radius-20:20px;
  --shadow-sm:0 2px 10px rgba(0,0,0,.06);
  --shadow-md:0 10px 24px rgba(0,0,0,.10);
  --shadow-lg:0 18px 40px rgba(0,0,0,.14);

  /* Accent = Amazon系オレンジ */
  --accent-800:#cc7a00;
  --accent-700:#e08500;
  --accent-600:#ff9900;
  --accent-500:#ffb84d;
  --accent-100:#fff2db;
  --accent-50:#fff9ef;

  /* CTA専用パレット（目立たせる） */
  --cta-800:#cc6a00;
  --cta-700:#ff7a00; /* 主色：強め */
  --cta-600:#ffb300; /* ハイライト */
  --cta-100:#fff0dc;

  /* Ink / Line / Background */
  --ink-900:#0f172a;--ink-800:#1f2937;--ink-700:#334155;--ink-600:#475569;--ink-500:#64748b;--ink-300:#cbd5e1;--ink-200:#e2e8f0;
  --line-200:#e5e7eb;
  --bg-0:#ffffff;
  --bg-soft:#f8fafc;
}

@media (prefers-color-scheme: dark){
  body{background:#0b1020;color:#e6ebf3}
  :root{
    --accent-800:#ffad33;--accent-700:#ff9900;--accent-600:#ff9900;--accent-500:#ffc266;--accent-100:#2a1b00;--accent-50:#1b1405;

    --cta-800:#ff8f2b;
    --cta-700:#ff9900;
    --cta-600:#ffbf4d;
    --cta-100:#2a1600;

    --ink-900:#e6ebf3;--ink-800:#dbe3ef;--ink-700:#c7d0df;--ink-600:#afbbcf;--ink-500:#95a3bd;--ink-300:#2f3a59;--ink-200:#1b2441;
    --line-200:#233055;
    --bg-0:#0b1020;--bg-soft:#0e1530;
  }
}

/* Layout */
.container{max-width:var(--container);padding:0 var(--space-6);margin:0 auto}
.section{padding:var(--space-20) 0}
.section.tight{padding:var(--space-12) 0}
.grid{display:grid;gap:var(--space-8)}
@media(min-width:1024px){.grid-2{grid-template-columns:1.05fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}

/* Type scale */
h1{font-size:clamp(28px,4vw,40px);line-height:1.2;margin:0 0 var(--space-4)}
h2{font-size:clamp(22px,3vw,28px);line-height:1.25;margin:0 0 var(--space-4)}
h3{font-size:clamp(18px,2.4vw,22px);line-height:1.3;margin:0 0 var(--space-3)}
p{margin:0 0 var(--space-4)}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-500)}
.muted{color:var(--ink-600)}
.accent{color:var(--accent-700)}
.small-note{font-size:13px}

/* Header */
header{position:sticky;top:0;z-index:50;background:linear-gradient(180deg,var(--bg-0),rgba(255,255,255,.78));backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--line-200)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:var(--space-6)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand .logo{width:28px;height:28px;border-radius:10px;background:linear-gradient(135deg,var(--accent-600),#ffb700)}
.links{display:none;gap:var(--space-6)}
@media(min-width:860px){.links{display:flex}}

/* CTA Button（目立たせる） */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 20px;border-radius:999px;
  background:linear-gradient(180deg,var(--cta-600),var(--cta-700));
  color:#111;
  border:1px solid #cc6a00;
  font-weight:800;letter-spacing:.02em;
  box-shadow:0 1px 0 rgba(0,0,0,.12), 0 10px 24px rgba(255,153,0,.28);
  transition:transform .06s ease,box-shadow .2s ease,filter .2s ease,background .2s ease;
}
.btn:hover{
  background:linear-gradient(180deg,#ffc24d,#ff8a00);
  box-shadow:0 2px 0 rgba(0,0,0,.12), 0 16px 38px rgba(255,153,0,.34);
  transform:translateY(-1px);
}
.btn:active{transform:translateY(0);box-shadow:0 1px 0 rgba(0,0,0,.18),0 8px 16px rgba(255,153,0,.25)}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,153,0,.45),0 6px 24px rgba(255,153,0,.30)}
.btn.ghost{background:transparent;color:var(--accent-700);border-color:var(--accent-700);box-shadow:none}

/* Card components */
.card{
  background:var(--bg-0);
  border:1px solid var(--line-200);
  border-radius:var(--radius-16);
  padding:var(--space-6);
  box-shadow:var(--shadow-sm);
}
.card-gradient{
  background:linear-gradient(135deg,var(--accent-50),var(--bg-0),var(--bg-0),var(--accent-50));
  border:1px solid var(--line-200);
  border-radius:var(--radius-16);
  padding:var(--space-6);
  box-shadow:var(--shadow-sm);
}

/* Icon badge */
.icon-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:14px;
  background:linear-gradient(180deg,var(--bg-0),var(--bg-soft));
  border:1px solid var(--line-200);
  box-shadow:var(--shadow-sm);
}
.icon-badge img{width:24px;height:24px;object-fit:contain}

/* Feature grid */
.feature-grid{
  display:grid;gap:24px;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
}

/* Solution card */
.solution-card{
  position:relative;
  padding:var(--space-5) var(--space-6);
  border:1px solid var(--line-200);
  border-radius:var(--radius-16);
  box-shadow:var(--shadow-sm);
  background:linear-gradient(180deg,var(--bg-0),var(--bg-soft) 90%);
}

/* Icon helpers */
.icon24{width:24px;height:24px;flex:0 0 24px}
.icon48{width:48px;height:48px;flex:0 0 48px}
.illu{width:100%;aspect-ratio:3/2;border-radius:14px;border:1px solid var(--line-200);background:var(--bg-soft) center/cover no-repeat;object-fit:cover}
.icon-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:640px){.icon-row{grid-template-columns:1fr 1fr}}

/* Hero */
.hero{
  padding:var(--space-24) 0 var(--space-16);
  background:radial-gradient(1200px 380px at 50% -10%, var(--accent-50), transparent 60%), linear-gradient(180deg, var(--bg-0), var(--bg-0));
}
.kv{position:relative;aspect-ratio:16/10;border:1px solid var(--line-200);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-md)}
.kv::before{
  content:"";position:absolute;inset:0;
  background:url('/img/amazon_kv.jpg') center/cover no-repeat;
  filter:saturate(1.05) brightness(.9);
  opacity:.85;
}
.kv .note{
  position:absolute;bottom:12px;left:12px;
  background:rgba(15,23,42,.72);color:#fff;border:1px solid rgba(255,255,255,.08);
  padding:8px 12px;border-radius:12px;font-size:12px;
  backdrop-filter:blur(6px)
}

ul {
  padding-left: 1.5rem;
  margin: 0;
}

li {
  margin-bottom: 0.5rem;
}

.muted {
  color: var(--text-muted);
}

.center {
  text-align: center;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-6 {
  margin-top: 1.5rem;
}

.mt-8 {
  margin-top: 2rem;
}

.mt-12 {
  margin-top: 3rem;
}

.mb-0 {
  margin-bottom: 0;
}

.small-note {
  font-size: 0.875rem;
}

.accent {
  color: var(--accent);
}

/* このセクションは削除（上部の同様のヘッダー定義と重複）*/

.links a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* ヒーローセクション */
.hero {
  padding: 4rem 0;
  background-color: var(--bg-dark);
  color: white;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.kv {
  position: relative;
  height: 100%;
  margin: 0;
  background: url('/img/amazon_kv.jpg') center center no-repeat;
  background-size: cover;
  min-height: 400px;
  border-radius: 8px;
  overflow: hidden;
}

.kv::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.2);
}

.kv .note {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.5);
  color: white;
  padding: 0.5rem;
  font-size: 0.75rem;
  text-align: center;
  z-index: 1;
}

/* ボタン */
.btn {
  display: inline-block;
  background-color: var(--accent);
  color: white;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: var(--accent-dark);
  color: white;
  text-decoration: none;
}

/* カード */
.card {
  background-color: var(--card-bg);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* アイコン */
.icon24 {
  width: 24px;
  height: 24px;
}

.icon-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(255,255,255,0.1);
  padding: 0.5rem 0.75rem;
  border-radius: 100px;
  font-size: 0.875rem;
}

.badge {
  display: inline-block;
  background-color: var(--accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* KPIセクション */
.kpi {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.kpi .card {
  text-align: center;
  padding: 1rem;
}

.kpi .num {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 0.5rem;
}

.kpi .accent {
  color: var(--accent);
}

/* 特徴セクション */
.feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.iconbox {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background-color: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* フローセクション */
.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.flow .step {
  text-align: center;
}

/* ロードマップ */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step .num {
  display: inline-block;
  background-color: var(--accent);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.illu {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

/* 料金プラン */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Pricing table */
.price-card {
  background-color: var(--bg-0);
  border-radius: var(--radius-16);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line-200);
  position: relative;
}

.price-card.highlight{
  background: linear-gradient(160deg, var(--accent-50), var(--bg-0), var(--accent-50));
  box-shadow: var(--shadow-md);
  border: 1px solid var(--accent-600);
}

.price-card.highlight {
  box-shadow: 0 8px 16px rgba(255,153,0,0.2);
  border: 2px solid var(--accent);
}

.price-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(255,153,0,0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.price {
  font-size: 1.5rem;
  font-weight: 700;
}

.price small {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-muted);
}

.price-note {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-list {
  border-top: 1px solid var(--line-200);
}

details {
  border-bottom: 1px solid var(--line-200);
}

details summary {
  padding: var(--space-6) 0;
  position: relative;
  list-style: none;
  cursor: pointer;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details summary::-webkit-details-marker {
  display: none;
}

details .q {
  position: relative;
  padding-left: 30px;
}

details .q::before {
  content: "Q";
  position: absolute;
  left: 0;
  top: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--accent-600);
  color: #111;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
}

details .pm {
  color: var(--ink-500);
}

details .pm::before {
  content: "+";
  font-size: 20px;
  margin-left: var(--space-4);
}

details[open] .pm::before {
  content: "−";
}

.faq-body {
  padding: 0 0 var(--space-6) 30px;
  color: var(--ink-600);
}

/* CTA Section */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, var(--accent-800), var(--accent-700));
  color: white;
  padding: var(--space-12) var(--space-10);
  border-radius: var(--radius-20);
  position: relative;
  overflow: hidden;
}

.cta-band h2 {
  color: white;
  font-size: clamp(24px, 4vw, 32px);
  margin-bottom: var(--space-4);
}

.cta-band p {
  color: rgba(255, 255, 255, 0.9);
}

.cta-band::after {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 70%);
  z-index: 1;
  opacity: 0.4;
}

.cta-band .btn {
  background: white;
  color: var(--accent-700);
  border: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  z-index: 2;
}

.cta-band .btn:hover {
  background: #f8f9fa;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.25);
}

/* Footer */
footer {
  background: var(--ink-900);
  color: var(--ink-300);
  padding: var(--space-16) 0 var(--space-8);
}

footer h3 {
  color: #fff;
  margin-bottom: var(--space-6);
  font-size: 16px;
  font-weight: 600;
}

footer a {
  color: white;
}

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

footer ul {
  list-style: none;
  padding-left: 0;
}

footer li {
  margin-bottom: 0.75rem;
}

/* フローティングCTA */
.float-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: white;
  padding: 1rem;
  box-shadow: 0 -4px 6px rgba(0,0,0,0.1);
  text-align: center;
  z-index: 10;
  display: none;
}

/* Mobile responsive */
@media(max-width:1023px){
  .section{padding:var(--space-16) 0}
  .kv{aspect-ratio:16/12}
  
  .cta-band{
    flex-direction:column;text-align:center;align-items:center;
    padding:var(--space-10) var(--space-6);
  }
  .cta-band h2{margin-bottom:var(--space-5)}
  .cta-actions{margin-top:var(--space-6)}
}

@media(max-width:767px){
  .section{padding:var(--space-12) 0}
  .hero{padding:var(--space-12) 0 var(--space-10)}
  
  .pricing-grid{grid-template-columns:1fr}
  
  .icon-row{gap:8px}
  
  .footer-grid{grid-template-columns:1fr}
  .footer-menu{margin-bottom:var(--space-10)}
  
  .float-cta{display:flex}
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  .links {
    width: 100%;
    justify-content: space-between;
  }
  
  .hidden-sm {
    display: none;
  }
  
  .kpi {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}