:root {
  --primary: #f28b00;
  --primary-hover: #d97700;
  --bg: #f8f9fa;
  --card-bg: #ffffff;
  --text: #212529;
  --text-muted: #6c757d;
  --border: #e9ecef;
  --tag-active-bg: #212529;
  --tag-active-text: #ffffff;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 広告表記（ステマ規制対応） */
.pr-banner {
  background: #f1f3f5;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
}

header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  margin-bottom: 1.5rem;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

.site-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* ナビゲーション */
.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background-color: #fff3e0;
}

/* ヒーロー導線 */
.hero {
  background: linear-gradient(135deg, #fff3e0, #ffe0b2);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 2rem;
  border: 1px solid #ffd180;
}

.hero h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.cta-btn {
  display: inline-block;
  background-color: var(--primary);
  color: #fff;
  font-weight: bold;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: background-color 0.2s;
}

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

.sub-btn {
  display: inline-block;
  background-color: #fff;
  color: var(--text);
  border: 1px solid #ced4da;
  font-weight: 600;
  text-decoration: none;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.sub-btn:hover {
  background-color: #f8f9fa;
  border-color: #adb5bd;
}

/* セクション共通 */
.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background-color: var(--primary);
  border-radius: 2px;
}

/* 検索 & フィルター */
.controls {
  margin-bottom: 1.5rem;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  border: 1px solid #ced4da;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-btn {
  border: 1px solid #ced4da;
  background: #fff;
  padding: 0.4rem 0.85rem;
  border-radius: 20px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.tag-btn.active {
  background: var(--tag-active-bg);
  color: var(--tag-active-text);
  border-color: var(--tag-active-bg);
}

/* 作品リスト */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 1.25rem;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: #fff8e1;
  color: #f57f17;
  font-weight: 600;
  margin-bottom: 0.5rem;
  align-self: flex-start;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.85rem;
  color: #495057;
  margin-bottom: 0.75rem;
  flex-grow: 1;
}

.card-impression {
  font-size: 0.8rem;
  color: var(--text);
  background-color: #fff8e1;
  border-left: 3px solid var(--primary);
  padding: 0.5rem 0.75rem;
  border-radius: 0 6px 6px 0;
  margin-bottom: 1.25rem;
}

.card-impression--empty {
  color: var(--text-muted);
  background-color: var(--bg);
  border-left-color: var(--border);
  font-style: italic;
}

.card-action .btn {
  display: block;
  text-align: center;
  background-color: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 0.6rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background-color 0.2s;
}

.card-action .btn:hover {
  background-color: var(--primary-hover);
}

/* ガイドページ用スタイル */
.guide-article {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 2rem;
  margin-bottom: 3rem;
}

.guide-article h2 {
  font-size: 1.3rem;
  border-bottom: 2px solid #f1f3f5;
  padding-bottom: 0.5rem;
  margin: 2rem 0 1rem;
}

.guide-article h2:first-of-type {
  margin-top: 0;
}

.guide-article h3 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.5rem;
}

.guide-article p {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* ステップボックス */
.step-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.step-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  background-color: #fafafa;
  position: relative;
}

.step-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.step-num {
  background-color: var(--primary);
  color: #fff;
  font-weight: bold;
  font-size: 0.85rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
}

/* 注意書き・重要ボックス */
.notice-box {
  background-color: #e8f4fd;
  border-left: 4px solid #2196f3;
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.warning-box {
  background-color: #fff8e1;
  border-left: 4px solid #ffc107;
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

/* 比較テーブル */
.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table.custom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.custom-table th,
table.custom-table td {
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  text-align: left;
}

table.custom-table th {
  background-color: #f1f3f5;
  font-weight: 600;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.faq-q {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.faq-q::before {
  content: "Q.";
  color: var(--primary);
  font-weight: 800;
}

.faq-a {
  font-size: 0.9rem;
  color: #495057;
  padding-left: 1.5rem;
}

footer {
  border-top: 1px solid var(--border);
  background: var(--card-bg);
  padding: 2rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* A8バナー素材の置き場 */
.banner-block {
  text-align: center;
  margin: 0 0 3rem;
}

.banner-lead {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

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

.guide-article .banner-block {
  margin: 2rem 0 0;
}