/* ===== BackScratcher LP — Chatwork風 暖色・丸み・フレンドリー ===== */
:root {
  --orange: #ff6b2b;
  --orange2: #e85a1f;
  --orange-soft: #fff4ef;
  --blue: #3b82f6;
  --blue-soft: #eff6ff;
  --green: #10b981;
  --green-soft: #f0fdf4;
  --yellow-soft: #fffbeb;
  --text: #1a1a2e;
  --muted: #64748b;
  --bg: #ffffff;
  --bg2: #fafaf8;
  --border: #e8e8e8;
  --shadow: 0 4px 24px rgba(0,0,0,0.07);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
  --r: 16px;
  --maxw: 1400px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",sans-serif;
  color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

/* ===== ヘッダー ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center;
  justify-content: space-between; height: 68px;
}
.logo {
  font-size: 20px; font-weight: 900;
  color: var(--orange); letter-spacing: -0.01em;
}
.nav { display: flex; gap: 30px; font-size: 14px; color: var(--muted); }
.nav a:hover { color: var(--orange); }
.header-right { display: flex; align-items: center; gap: 16px; }
.lang-switcher { display: flex; gap: 4px; }
.lang-btn {
  background: none; border: 1px solid var(--border);
  color: var(--muted); font-size: 12px; font-weight: 700;
  padding: 5px 10px; border-radius: 6px; cursor: pointer;
  transition: all 0.15s;
}
.lang-btn:hover { border-color: var(--orange); color: var(--orange); }
.lang-btn.active { background: var(--orange); border-color: var(--orange); color: #fff; }

.nav-cta {
  background: var(--orange); color: #fff;
  font-weight: 700; font-size: 14px;
  padding: 10px 24px; border-radius: 100px;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--orange2); transform: translateY(-1px); }

/* ===== ヒーロー ===== */
.hero {
  background: var(--bg);
  padding: 52px 0 0;
  overflow: hidden;
}
.hero .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: center;
}
.hero-text .badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--orange-soft); color: var(--orange);
  font-size: 12px; font-weight: 700; padding: 6px 16px;
  border-radius: 100px; margin-bottom: 24px;
  border: 1px solid rgba(255,107,43,0.2);
}
.hero-text h1 {
  font-size: clamp(32px, 4vw, 48px); font-weight: 900;
  color: var(--text); line-height: 1.3;
  letter-spacing: -0.025em; margin-bottom: 20px;
}
.hero-text h1 .hl { color: var(--orange); }
.hero-text p {
  font-size: 18px; color: var(--muted);
  line-height: 1.85; margin-bottom: 28px;
}
.btn-main {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--orange); color: #fff;
  font-weight: 800; font-size: 16px;
  padding: 16px 36px; border-radius: 100px;
  transition: background 0.2s, transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 18px rgba(255,107,43,0.35);
}
.btn-main:hover {
  background: var(--orange2); transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,107,43,0.4);
}
.btn-sub {
  display: inline-flex; align-items: center;
  color: var(--muted); font-size: 14px; font-weight: 600;
  margin-left: 20px; gap: 4px;
}
.btn-sub:hover { color: var(--orange); }

/* ===== ダッシュボードのCSSモックアップ ===== */
.hero-visual {
  padding: 20px 0 0;
  position: relative;
}
.mockup {
  background: #1e293b;
  border-radius: 16px 16px 0 0;
  padding: 14px 18px 0;
  box-shadow: 0 24px 60px rgba(0,0,0,0.2);
}
.mockup-bar {
  display: flex; gap: 6px; margin-bottom: 14px;
}
.mockup-bar span {
  width: 10px; height: 10px; border-radius: 50%;
}
.mockup-bar span:nth-child(1) { background: #ef4444; }
.mockup-bar span:nth-child(2) { background: #f59e0b; }
.mockup-bar span:nth-child(3) { background: #22c55e; }
.mockup-screen {
  background: #f1f5f9; border-radius: 8px 8px 0 0;
  padding: 16px; min-height: 300px;
}
.mockup-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 12px; }
.mockup-card {
  background: #fff; border-radius: 10px;
  padding: 14px 16px; font-size: 11px; color: #374151;
}
.mockup-card .m-label { color: #9ca3af; font-size: 10px; margin-bottom: 4px; }
.mockup-card .m-val { font-size: 20px; font-weight: 900; color: var(--text); }
.mockup-card .m-diff { font-size: 11px; color: var(--green); margin-top: 2px; }
.mockup-chart {
  background: #fff; border-radius: 10px;
  padding: 14px 16px; margin-bottom: 10px;
}
.mockup-chart .m-title { font-size: 11px; font-weight: 700; color: #374151; margin-bottom: 10px; }
.chart-bars {
  display: flex; gap: 6px; align-items: flex-end; height: 60px;
}
.chart-bars .bar {
  flex: 1; background: var(--orange);
  opacity: 0.8; border-radius: 4px 4px 0 0;
  transition: opacity 0.2s;
}
.mockup-table {
  background: #fff; border-radius: 10px;
  padding: 12px 14px; font-size: 10px;
}
.mockup-table .m-title { font-size: 11px; font-weight: 700; color: #374151; margin-bottom: 8px; }
.m-row {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 8px; padding: 6px 0;
  border-bottom: 1px solid #f1f5f9; color: #6b7280;
}
.m-row.head { color: #9ca3af; font-size: 9px; }
.m-row span:not(:first-child) { text-align: right; }

/* ===== 実績バー ===== */
.stat-strip {
  background: var(--orange-soft);
  border-top: 1px solid rgba(255,107,43,0.15);
  border-bottom: 1px solid rgba(255,107,43,0.15);
  padding: 16px 0;
}
.stat-strip .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: flex; justify-content: center;
  gap: 52px; flex-wrap: wrap; align-items: center;
}
.stat-strip .item { text-align: center; }
.stat-strip .fig {
  font-size: 30px; font-weight: 900; color: var(--orange); display: block;
}
.stat-strip .desc { font-size: 14px; color: var(--muted); }

/* ===== 課題セクション ===== */
.pain {
  padding: 56px 0;
  background: var(--bg2);
}
.sec-head { text-align: center; margin-bottom: 36px; }
.sec-head .ja {
  font-size: clamp(24px, 3vw, 36px); font-weight: 900;
  color: var(--text); letter-spacing: -0.02em;
}
.sec-head .en {
  font-size: 12px; letter-spacing: 0.2em; color: var(--muted);
  text-transform: uppercase; margin-top: 6px; display: block;
}
.pain-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.pain-card {
  background: #fff; border-radius: var(--r);
  padding: 28px; display: flex; gap: 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.pain-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--yellow-soft); color: #b45309;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; padding: 11px;
}
.pain-icon svg { width: 100%; height: 100%; }
.pain-card h3 { font-size: 17px; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.pain-card p { font-size: 15px; color: var(--muted); }

/* ===== 解決セクション ===== */
.solve { padding: 56px 0; background: #fff; }
.solve-head {
  text-align: center; margin-bottom: 36px;
}
.solve-head .big {
  font-size: clamp(26px, 3.5vw, 40px); font-weight: 900;
  color: var(--text); letter-spacing: -0.025em; line-height: 1.3;
}
.solve-head .big .hl { color: var(--orange); }
.solve-head p { font-size: 17px; color: var(--muted); margin-top: 12px; }

.feature-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; }
.feature-card {
  background: var(--bg2); border-radius: var(--r);
  padding: 30px 28px; border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.f-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center;
  justify-content: center; margin-bottom: 16px;
  padding: 13px; flex-shrink: 0;
}
.f-icon svg { width: 100%; height: 100%; }
.f-icon.o { background: var(--orange-soft); color: var(--orange2); }
.f-icon.b { background: var(--blue-soft); color: var(--blue); }
.f-icon.g { background: var(--green-soft); color: var(--green); }
.f-icon.y { background: var(--yellow-soft); color: #b45309; }
.feature-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { font-size: 15px; color: var(--muted); }

/* ===== Before / After ===== */
.compare { padding: 56px 0; background: var(--bg2); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.compare-col { border-radius: var(--r); overflow: hidden; }
.compare-col .c-head {
  padding: 18px 24px; font-size: 15px; font-weight: 800;
}
.before .c-head { background: #fef2f2; color: #dc2626; }
.after  .c-head { background: var(--orange-soft); color: var(--orange); }
.compare-list { background: #fff; border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--r) var(--r); }
.compare-list li {
  list-style: none; padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  font-size: 16px; display: flex; gap: 10px; align-items: flex-start;
}
.compare-list li:last-child { border-bottom: none; }
.before .compare-list li::before { content: "✕"; color: #dc2626; font-weight: 900; flex-shrink: 0; }
.after  .compare-list li::before { content: "✓"; color: var(--green); font-weight: 900; flex-shrink: 0; }

/* ===== CTAバナー ===== */
.cta-section {
  padding: 56px 0; background: var(--orange);
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(24px, 3vw, 36px); font-weight: 900;
  color: #fff; margin-bottom: 12px;
}
.cta-section p { font-size: 18px; color: rgba(255,255,255,0.85); margin-bottom: 28px; }
.btn-white {
  display: inline-block;
  background: #fff; color: var(--orange);
  font-weight: 800; font-size: 16px;
  padding: 16px 42px; border-radius: 100px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.12);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.18); }

/* ===== 会社概要 ===== */
.company { padding: 56px 0; background: #fff; }
.company-table {
  width: 100%;
  border-collapse: collapse;
}
.company-table th, .company-table td {
  padding: 18px 20px; border-bottom: 1px solid var(--border);
  font-size: 15px; text-align: left; vertical-align: top;
}
.company-table th { width: 160px; font-weight: 800; background: var(--bg2); }

/* ===== フッター ===== */
.site-footer {
  background: #1a1a2e; color: rgba(255,255,255,0.5);
  padding: 36px 0; font-size: 13px;
}
.site-footer .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 40px;
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: rgba(255,255,255,0.7); }
.footer-links a:hover { color: var(--orange); }

/* ===== プライバシーポリシー ===== */
.doc { padding: 70px 0 100px; }
.doc h1 { font-size: 30px; font-weight: 900; color: var(--text); margin-bottom: 6px; }
.doc .updated { color: var(--muted); font-size: 13px; margin-bottom: 40px; }
.doc p { font-size: 15px; margin-bottom: 14px; }
.doc h2 {
  font-size: 18px; font-weight: 800; color: var(--text);
  margin: 36px 0 12px; padding-left: 12px;
  border-left: 4px solid var(--orange);
}
.doc ul { margin: 10px 0 14px 22px; }
.doc li { font-size: 15px; margin-bottom: 8px; }
.doc .back { display: inline-block; margin-top: 40px; color: var(--orange); font-weight: 700; }
.todo { color: #b23b3b; font-weight: 600; }

/* ===== レスポンシブ ===== */
@media (max-width: 820px) {
  .hero .inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .pain-grid, .feature-grid, .compare-grid { grid-template-columns: 1fr; }
  .nav { display: none; }
  .hero { padding: 60px 0 0; }
}