/* =====================================================
   ロジどら２ — Full White & Stylish Design
   Palette:
     --blue        : #1565C0  (deep brand blue)
     --blue-light  : #1E88E5
     --blue-soft   : #E3F0FB
     --ink         : #0D1117  (near-black text)
     --ink-2       : #2D3748
     --muted       : #64748B
     --border      : #E2E8F0
     --bg-pale     : #F7F9FC
     --white       : #FFFFFF
   ===================================================== */

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

:root {
  --blue:       #1565C0;
  --blue-l:     #1E88E5;
  --blue-soft:  #E3F0FB;
  --blue-glow:  rgba(21,101,192,0.18);
  --ink:        #0D1117;
  --ink-2:      #2D3748;
  --muted:      #64748B;
  --border:     #E2E8F0;
  --bg-pale:    #F7F9FC;
  --white:      #FFFFFF;
  --font:       'Noto Sans JP','Inter',sans-serif;
  --hh:         72px;
  --r:          12px;
  --rl:         20px;
  --sh:         0 2px 16px rgba(0,0,0,.07);
  --sh-blue:    0 6px 28px rgba(21,101,192,.22);
  --tr:         .28s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--ink-2);
  line-height: 1.75;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-l); text-decoration: none; transition: color var(--tr); }
a:hover { color: var(--blue); }
ul, ol { list-style: none; }

/* ---------- Container ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 50px;
  font-size: .93rem; font-weight: 700; cursor: pointer;
  transition: all var(--tr); border: 2px solid transparent;
  line-height: 1.4; white-space: nowrap; font-family: var(--font);
}
.btn-primary {
  background: var(--blue); color: var(--white); border-color: var(--blue);
}
.btn-primary:hover {
  background: var(--blue-l); border-color: var(--blue-l);
  color: var(--white); transform: translateY(-2px); box-shadow: var(--sh-blue);
}
.btn-outline {
  background: transparent; color: var(--blue); border-color: var(--blue);
}
.btn-outline:hover {
  background: var(--blue-soft); color: var(--blue);
  transform: translateY(-2px);
}
.btn-header {
  background: var(--blue); color: var(--white);
  padding: 8px 22px; font-size: .85rem;
}
.btn-header:hover {
  background: var(--blue-l); color: var(--white); transform: translateY(-1px);
}
.btn-large { padding: 16px 52px; font-size: 1.05rem; }

/* ---------- Section Common ---------- */
.section-pad { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 64px; }

.section-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .72rem; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--blue-l); margin-bottom: 14px;
}
.section-eyebrow::before, .section-eyebrow::after {
  content: ''; display: block; width: 20px; height: 1.5px;
  background: var(--blue-l); border-radius: 2px;
}

.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 900; line-height: 1.3; color: var(--ink);
  margin-bottom: 16px;
}

.section-sub {
  font-size: .97rem; color: var(--muted);
  max-width: 560px; margin: 0 auto; line-height: 1.8;
}

/* =====================================================
   HEADER — White / glass
   ===================================================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--tr), background var(--tr);
}
.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(0,0,0,.09);
  background: rgba(255,255,255,.98);
}

.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 28px;
  height: var(--hh); display: flex; align-items: center; gap: 32px;
}

.site-logo { flex-shrink: 0; }
.site-logo a { display: flex; align-items: center; }
.site-logo img {
  height: 40px; width: auto;
  /* 黒背景をCSSで透過: multiply で白背景に馴染む */
  mix-blend-mode: multiply;
  transition: opacity var(--tr);
}
.site-logo a:hover img { opacity: .82; }

.site-nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list a {
  color: var(--ink-2); font-size: .88rem; font-weight: 500;
  padding: 7px 14px; border-radius: 8px; transition: all var(--tr);
}
.nav-list a:hover { color: var(--blue); background: var(--blue-soft); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; width: 38px; height: 38px; background: none; border: none;
  cursor: pointer; padding: 5px; border-radius: 8px;
  transition: background var(--tr); margin-left: auto;
}
.hamburger:hover { background: var(--bg-pale); }
.hamburger span {
  display: block; height: 2px; background: var(--ink-2);
  border-radius: 2px; transition: all var(--tr);
}

/* Mobile Menu */
.mobile-menu {
  background: var(--white); border-top: 1px solid var(--border);
  overflow: hidden; max-height: 0; transition: max-height .4s ease;
}
.mobile-menu.open { max-height: 420px; }
.mobile-menu ul { padding: 14px 24px 24px; display: flex; flex-direction: column; gap: 3px; }

.mobile-link {
  display: block; color: var(--ink-2); font-size: .97rem;
  padding: 12px 16px; border-radius: 8px; transition: all var(--tr);
}
.mobile-link:hover { background: var(--blue-soft); color: var(--blue); }
.mobile-cta {
  margin-top: 8px; background: var(--blue);
  color: var(--white) !important; text-align: center; font-weight: 700;
}
.mobile-cta:hover { background: var(--blue-l) !important; color: var(--white) !important; }

/* =====================================================
   HERO — White, 2-column, logo showcase
   ===================================================== */
.hero {
  position: relative; min-height: 100vh; display: flex;
  align-items: center; overflow: hidden; padding-top: var(--hh);
  background: var(--white);
}

/* Subtle gradient bg */
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 70% 60% at 90% 20%, rgba(21,101,192,.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 0% 100%, rgba(30,136,229,.05) 0%, transparent 55%),
    linear-gradient(160deg, #fff 0%, #f4f8ff 60%, #eef4fd 100%);
}

/* Dot grid */
.hero-overlay {
  position: absolute; inset: 0; z-index: 0;
  background-image: radial-gradient(circle, rgba(21,101,192,.10) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 80% 80% at 80% 20%, rgba(0,0,0,.6) 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 80% 20%, rgba(0,0,0,.6) 0%, transparent 70%);
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 1120px; margin: 0 auto; padding: 88px 28px 80px;
  width: 100%; display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px; align-items: center;
}

/* Left */
.hero-text-col { display: flex; flex-direction: column; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .75rem; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--blue-l); margin-bottom: 18px;
}
.hero-eyebrow::before {
  content: ''; display: inline-block; width: 28px; height: 2px;
  background: var(--blue-l); border-radius: 2px; flex-shrink: 0;
}

.hero-title {
  font-size: clamp(2.2rem, 4.2vw, 3.8rem);
  font-weight: 900; line-height: 1.14; color: var(--ink); margin-bottom: 22px;
}
.hero-accent { color: var(--blue); }

.hero-sub {
  font-size: clamp(.9rem, 1.4vw, 1.05rem);
  color: var(--muted); line-height: 1.9; margin-bottom: 36px; max-width: 480px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Right */
.hero-visual-col { display: flex; flex-direction: column; align-items: center; gap: 24px; }

/* Product showcase card */
.hero-logo-showcase {
  background: var(--white); border-radius: 24px;
  width: 100%; max-width: 440px;
  display: flex; flex-direction: column; align-items: center; gap: 0;
  box-shadow: 0 24px 64px rgba(21,101,192,.14), 0 4px 20px rgba(0,0,0,.08);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--tr), transform var(--tr);
}
.hero-logo-showcase:hover {
  box-shadow: 0 32px 80px rgba(21,101,192,.20), 0 6px 28px rgba(0,0,0,.10);
  transform: translateY(-4px);
}

/* 製品写真 */
.hero-product-img {
  width: 100%; height: auto; display: block;
  background: #f4f6f8;
  mix-blend-mode: normal;
}

/* カード下部バー: ロゴ＋型番 */
.hero-showcase-footer {
  width: 100%; display: flex; align-items: center;
  justify-content: space-between; padding: 14px 24px;
  background: #000; gap: 12px;
}
.hero-showcase-logo {
  height: 26px; width: auto;
}
.hero-logo-model {
  font-size: .7rem; font-weight: 700; letter-spacing: .2em;
  color: rgba(255,255,255,.45); text-transform: uppercase;
}
.hero-logo-tagline {
  font-size: .82rem; color: rgba(30,136,229,.9);
  font-weight: 600; text-align: center; line-height: 1.6;
}

/* Stat grid */
.hero-stats {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 12px; width: 100%; max-width: 420px;
}
.stat-item {
  display: flex; flex-direction: column; align-items: center;
  padding: 18px 12px; gap: 4px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: 16px; box-shadow: var(--sh);
  transition: box-shadow var(--tr), transform var(--tr), border-color var(--tr);
}
.stat-item:hover {
  box-shadow: var(--sh-blue); transform: translateY(-3px);
  border-color: rgba(21,101,192,.3);
}
.stat-value { font-size: 1.4rem; font-weight: 900; color: var(--blue); line-height: 1.2; }
.stat-label { font-size: .67rem; color: var(--muted); text-align: center; line-height: 1.4; }
.stat-label small { font-size: .62rem; color: var(--blue); font-weight: 600; display: block; margin-top: 1px; }
.stat-divider { display: none; }

.hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 1; display: flex; flex-direction: column; align-items: center;
  gap: 5px; color: var(--muted); font-size: .68rem; letter-spacing: .14em;
  text-transform: uppercase; animation: scrollBounce 2.2s infinite;
}
.hero-scroll:hover { color: var(--blue); }
@keyframes scrollBounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  55%      { transform: translateX(-50%) translateY(9px); }
}

/* =====================================================
   PROBLEMS — Light bg
   ===================================================== */
.problems { padding: 100px 0; background: var(--bg-pale); }

.problems-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 20px; margin-bottom: 52px;
}

.problem-card {
  background: var(--white); border-radius: var(--rl);
  padding: 36px 24px; text-align: center;
  border: 1px solid var(--border); box-shadow: var(--sh);
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.problem-card:hover {
  transform: translateY(-5px); box-shadow: 0 12px 40px rgba(0,0,0,.10);
  border-color: rgba(21,101,192,.2);
}
.problem-icon {
  width: 60px; height: 60px; margin: 0 auto 18px;
  background: var(--blue-soft); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--blue);
}
.problem-card h3 { font-size: .98rem; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.5; }
.problem-card p  { font-size: .84rem; color: var(--muted); line-height: 1.75; }

.problems-solve { text-align: center; }
.solve-text {
  display: inline-block; font-size: 1.2rem; font-weight: 900;
  color: var(--blue); padding: 16px 44px;
  border: 2px solid var(--blue); border-radius: 50px;
  background: var(--blue-soft); letter-spacing: .04em;
}

/* =====================================================
   FEATURES — White + pale alternating
   ===================================================== */
.features { padding: 100px 0; background: var(--white); }

.feature-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px; align-items: center; margin-bottom: 88px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row-reverse { direction: rtl; }
.feature-row-reverse > * { direction: ltr; }

/* Visual card */
.feature-img-wrap {
  border-radius: var(--rl); aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 18px; overflow: hidden;
  position: relative;
  border: 1px solid var(--border); box-shadow: var(--sh);
  transition: box-shadow var(--tr);
}
.feature-row:hover .feature-img-wrap { box-shadow: 0 12px 40px rgba(21,101,192,.13); }

.feature-img-dark    { background: linear-gradient(135deg, #0d1829 0%, #1a3052 100%); }
.feature-img-night   { background: linear-gradient(135deg, #0d1117 0%, #1a2540 100%); }
.feature-img-gps     { background: linear-gradient(135deg, #0d1e30 0%, #0a2744 100%); }
.feature-img-multicam{ background: linear-gradient(135deg, #0a1f1a 0%, #0d2e26 100%); }
.feature-img-link    { background: linear-gradient(135deg, #1a0d2e 0%, #2a1248 100%); }

.feature-big-icon { font-size: 3.6rem; color: rgba(30,136,229,.8); }
.feature-badge {
  background: rgba(30,136,229,.15); border: 1px solid rgba(30,136,229,.35);
  color: #64b5f6; font-size: .78rem; font-weight: 700;
  padding: 5px 16px; border-radius: 50px; letter-spacing: .06em;
}

/* Text side */
.feature-num {
  font-size: .68rem; font-weight: 700; letter-spacing: .22em;
  color: var(--blue-l); margin-bottom: 6px;
}
.feature-title {
  font-size: clamp(1.35rem, 2.3vw, 1.8rem); font-weight: 900;
  line-height: 1.3; color: var(--ink); margin-bottom: 18px;
}
.feature-desc { font-size: .92rem; color: var(--muted); line-height: 1.9; margin-bottom: 22px; }
.feature-list { display: flex; flex-direction: column; gap: 10px; }
.feature-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .88rem; color: var(--ink-2);
}
.feature-list li .fas.fa-check {
  color: var(--blue); font-size: .78rem; margin-top: 5px; flex-shrink: 0;
}

/* =====================================================
   SPEC — Very light blue tint
   ===================================================== */
.spec-section { padding: 100px 0; background: var(--bg-pale); }

.spec-wrap {
  display: grid; grid-template-columns: 1fr 2fr;
  gap: 52px; margin-bottom: 60px; align-items: start;
}

/* Product card */
.spec-img-placeholder {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--rl); padding: 44px 28px;
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  text-align: center; box-shadow: var(--sh);
}
.spec-img-placeholder img {
  /* 白背景カード内 → multiply で透過 */
  mix-blend-mode: multiply;
  max-width: 240px;
}
.spec-model-label {
  font-size: .95rem; font-weight: 700; color: var(--ink); letter-spacing: .1em;
}
.spec-badges-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.spec-badge {
  background: var(--blue-soft); border: 1px solid rgba(21,101,192,.25);
  color: var(--blue); font-size: .72rem; font-weight: 700;
  padding: 4px 12px; border-radius: 50px;
}

/* Spec table */
.spec-table-wrap { overflow-x: auto; }
.spec-table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--r); overflow: hidden; box-shadow: var(--sh); }
.spec-table caption { font-size: 0; visibility: hidden; height: 0; }
.spec-table th, .spec-table td {
  padding: 15px 22px; text-align: left;
  border-bottom: 1px solid var(--border); font-size: .88rem; line-height: 1.65;
}
.spec-table th {
  background: var(--bg-pale); color: var(--muted);
  font-weight: 600; white-space: nowrap; width: 170px;
}
.spec-table td { color: var(--ink-2); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover td { background: #f0f6ff; }

/* Recording time */
.rec-time-section {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--rl); padding: 44px; box-shadow: var(--sh);
}
.rec-time-title {
  font-size: 1.05rem; font-weight: 700; color: var(--ink);
  margin-bottom: 24px; text-align: center;
}
.rec-time-wrap { overflow-x: auto; }
.rec-table { width: 100%; border-collapse: collapse; }
.rec-table caption { font-size: 0; visibility: hidden; height: 0; }
.rec-table th {
  background: var(--blue-soft); color: var(--blue);
  font-size: .82rem; font-weight: 700; padding: 12px 20px;
  text-align: center; border-bottom: 2px solid rgba(21,101,192,.2);
}
.rec-table td {
  color: var(--ink-2); font-size: .88rem; padding: 12px 20px;
  text-align: center; border-bottom: 1px solid var(--border);
}
.rec-table tr:last-child td { border-bottom: none; }
.rec-table tr:hover td { background: #f4f8ff; }
.rec-note {
  font-size: .76rem; color: var(--muted); margin-top: 14px; text-align: center;
}

/* =====================================================
   FLOW — White
   ===================================================== */
.flow-section { padding: 100px 0; background: var(--white); }

.flow-steps {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; position: relative;
}
.flow-steps::before {
  content: ''; position: absolute;
  top: 56px; left: 12.5%; right: 12.5%; height: 2px;
  background: linear-gradient(90deg, var(--blue) 0%, #42a5f5 100%);
  opacity: .35; z-index: 0;
}

.flow-step { position: relative; z-index: 1; text-align: center; padding: 0 18px; }
.flow-step-num {
  font-size: .68rem; font-weight: 700; letter-spacing: .15em;
  color: var(--blue-l); margin-bottom: 6px;
}
.flow-step-icon {
  width: 72px; height: 72px;
  background: var(--white); border: 2.5px solid var(--blue);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: var(--blue); margin: 0 auto 20px;
  box-shadow: 0 0 0 7px var(--white), var(--sh-blue);
  position: relative; z-index: 2;
  transition: transform var(--tr), box-shadow var(--tr);
}
.flow-step:hover .flow-step-icon {
  transform: scale(1.08); box-shadow: 0 0 0 7px var(--white), 0 8px 32px rgba(21,101,192,.32);
}
.flow-step h3 { font-size: .97rem; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.4; }
.flow-step p  { font-size: .83rem; color: var(--muted); line-height: 1.75; }

/* =====================================================
   FAQ — Pale bg
   ===================================================== */
.faq-section { padding: 100px 0; background: var(--bg-pale); }

.faq-list {
  max-width: 780px; margin: 0 auto;
  border: 1px solid var(--border); border-radius: var(--rl);
  overflow: hidden; background: var(--white); box-shadow: var(--sh);
}
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }

.faq-question {
  width: 100%; background: none; border: none;
  padding: 22px 28px; display: flex; align-items: center;
  justify-content: space-between; gap: 16px;
  font-size: .92rem; font-weight: 600; color: var(--ink);
  cursor: pointer; text-align: left; transition: background var(--tr);
  font-family: var(--font); line-height: 1.55;
}
.faq-question:hover { background: var(--bg-pale); }
.faq-question[aria-expanded="true"] { color: var(--blue); background: var(--blue-soft); }

.faq-icon { flex-shrink: 0; color: var(--blue); transition: transform var(--tr); font-size: .88rem; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }

.faq-answer {
  padding: 4px 28px 22px;
  font-size: .88rem; color: var(--muted); line-height: 1.85;
  border-top: 1px solid var(--border);
}

/* =====================================================
   RELATED PRODUCTS — Banner grid
   ===================================================== */
.related-section {
  padding: 100px 0;
  background: var(--bg-pale);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.related-card {
  display: block;
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--sh);
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
  line-height: 0; /* 画像下の余白を消す */
}
.related-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 12px 40px rgba(21,101,192,.16);
  border-color: rgba(21,101,192,.25);
}
.related-card img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity var(--tr);
}
.related-card:hover img { opacity: .92; }

/* =====================================================
   CONTACT — Light blue-tinted bg, white form card
   ===================================================== */
.contact-section {
  padding: 100px 0;
  background: linear-gradient(160deg, #eef4fd 0%, #f4f8ff 50%, #eef4fd 100%);
  position: relative;
}
.contact-section::before {
  content: ''; position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(21,101,192,.07) 1px, transparent 1px);
  background-size: 32px 32px; z-index: 0; pointer-events: none;
}

.contact-section .container { position: relative; z-index: 1; }

/* Override section-header for light bg */
.contact-section .section-title  { color: var(--ink); }
.contact-section .section-sub    { color: var(--muted); }

.contact-form {
  max-width: 740px; margin: 0 auto;
  background: var(--white); border-radius: 28px;
  padding: 52px 52px 44px; box-shadow: 0 12px 56px rgba(21,101,192,.12);
  border: 1px solid rgba(21,101,192,.1);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }

.form-group label { font-size: .84rem; font-weight: 600; color: var(--ink-2); }

.required {
  display: inline-block; background: var(--blue); color: var(--white);
  font-size: .62rem; font-weight: 700; padding: 1px 7px;
  border-radius: 4px; margin-left: 6px; vertical-align: middle;
}

.form-group input, .form-group select, .form-group textarea {
  background: var(--bg-pale); border: 1.5px solid var(--border);
  border-radius: 10px; padding: 12px 16px;
  color: var(--ink); font-size: .92rem; font-family: var(--font);
  transition: border-color var(--tr), background var(--tr), box-shadow var(--tr);
  outline: none;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: #b0bec5; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--blue-l); background: var(--white);
  box-shadow: 0 0 0 3px rgba(30,136,229,.12);
}
.form-group input.error, .form-group textarea.error { border-color: #e53935; }
.form-group select option { background: var(--white); color: var(--ink); }

.field-error { font-size: .76rem; color: #e53935; min-height: 18px; }

.contact-form-embed { border-radius: 14px; overflow: hidden; margin-bottom: 20px; }
.contact-form-embed iframe { display: block; width: 100%; border: 0; }

.privacy-note {
  font-size: .78rem; color: var(--muted); margin-bottom: 28px; line-height: 1.6;
}
.privacy-note a { color: var(--blue-l); text-decoration: underline; }

.form-submit { text-align: center; }

.form-success {
  margin-top: 24px; background: #e8f5e9; border: 1px solid #a5d6a7;
  border-radius: 10px; padding: 18px 22px;
  display: flex; align-items: center; gap: 12px;
  color: #2e7d32; font-size: .92rem; font-weight: 600;
}
.form-success i { font-size: 1.4rem; }

/* =====================================================
   FOOTER — White with blue accent line
   ===================================================== */
.site-footer {
  background: var(--white); border-top: 1px solid var(--border); padding: 0;
}
.site-footer::before {
  content: ''; display: block; height: 4px;
  background: linear-gradient(90deg, var(--blue) 0%, #42a5f5 100%);
}

.footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 56px 28px 48px;
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 48px; align-items: start;
  border-bottom: 1px solid var(--border);
}

.footer-logo { display: flex; flex-direction: column; gap: 12px; }

.footer-logo-card {
  display: inline-flex; flex-direction: column;
  background: transparent; border-radius: 0; padding: 0;
  align-items: flex-start; gap: 6px;
  box-shadow: none; border: none;
  transition: opacity var(--tr), transform var(--tr);
  text-decoration: none;
}
.footer-logo-card:hover {
  opacity: .72;
  transform: translateY(-2px);
}
.footer-logo-card img {
  height: 36px; width: auto;
  mix-blend-mode: multiply; /* 白フッター上で黒背景を透過 */
}
.footer-tagline { font-size: .74rem; color: var(--muted); font-weight: 500; }

.footer-nav ul { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.footer-nav a { font-size: .85rem; color: var(--muted); transition: color var(--tr); }
.footer-nav a:hover { color: var(--blue); }

.footer-company { text-align: right; }
.footer-company p { font-size: .8rem; color: var(--muted); line-height: 1.9; }
.footer-company strong { color: var(--ink); }
.footer-company a { color: var(--blue-l); }
.footer-company a:hover { color: var(--blue); }

.footer-bottom {
  max-width: 1120px; margin: 0 auto; padding: 18px 28px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; background: var(--bg-pale);
}
.footer-bottom p { font-size: .76rem; color: var(--muted); }
.footer-bottom nav a { font-size: .76rem; color: var(--muted); transition: color var(--tr); }
.footer-bottom nav a:hover { color: var(--blue); }

/* =====================================================
   BACK TO TOP
   ===================================================== */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 900;
  width: 48px; height: 48px; background: var(--blue); color: var(--white);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: .95rem; box-shadow: var(--sh-blue);
  opacity: 0; transform: translateY(16px);
  transition: opacity var(--tr), transform var(--tr), background var(--tr);
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--blue-l); color: var(--white); transform: translateY(-3px); }

/* =====================================================
   ANIMATIONS
   ===================================================== */
[data-aos] { opacity: 0; transform: translateY(28px); transition: opacity .65s ease, transform .65s ease; }
[data-aos].visible { opacity: 1; transform: translateY(0); }

/* =====================================================
   COMPETITOR COMPARISON — 縦型比較テーブル（vtable）
   比較項目：縦軸　製品：横軸
   ===================================================== */
.comp-rival-section {
  padding: 100px 0;
  background: var(--bg-pale);
}

.vtable-wrap {
  overflow-x: auto;
  border-radius: var(--rl);
  box-shadow: 0 6px 40px rgba(21,101,192,.13);
  border: 1px solid rgba(21,101,192,.14);
  margin-bottom: 20px;
}

.vtable-scroll-hint {
  display: none;
  align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 600; color: var(--blue);
  margin-bottom: 10px;
}

.vtable {
  width: 100%; border-collapse: collapse; min-width: 760px;
  background: var(--white); table-layout: fixed;
}
.vtable caption { font-size: 0; visibility: hidden; height: 0; }

/* 列幅 */
.vtable-feature-col { width: 17%; }
.vtable-col         { width: 13.8%; }

/* ヘッダー行 */
.vtable thead tr {
  background: var(--white);
  border-bottom: 3px solid rgba(21,101,192,.18);
}
.vtable thead th {
  padding: 20px 10px 16px;
  text-align: center; vertical-align: top; font-weight: 700;
}
.vtable thead th.vtable-feature-col {
  background: linear-gradient(160deg, var(--blue) 0%, #1e7fd6 100%);
  color: var(--white); font-size: .8rem; letter-spacing: .1em;
  text-align: center; vertical-align: middle;
}
.vtable-head-inner {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
}
.vtable-head-maker-label {
  font-size: .68rem; font-weight: 800; letter-spacing: .12em;
  color: var(--muted); text-transform: uppercase;
}
.vtable-head-model {
  font-size: .82rem; font-weight: 700; color: var(--ink-2); line-height: 1.35;
}

/* ロジどら２列ヘッダー */
.vtable-col--ours {
  background: linear-gradient(160deg, #e6f2ff 0%, #d4eaff 100%);
  border-left: 3px solid var(--blue);
  border-right: 3px solid var(--blue);
}
.vtable-rec-badge {
  display: inline-block; font-size: .62rem; font-weight: 800;
  color: var(--white); background: var(--blue);
  padding: 2px 10px; border-radius: 50px;
  letter-spacing: .04em; margin-bottom: 2px;
}
.vtable-head-name {
  font-size: .88rem; font-weight: 900; color: var(--blue); line-height: 1.3;
}
.vtable-head-maker {
  font-size: .65rem; color: var(--muted); font-weight: 500; margin-top: 2px;
}

/* tbody 行 */
.vtable-row td,
.vtable-row th { border-bottom: 1px solid var(--border); }
.vtable-row:last-child td,
.vtable-row:last-child th { border-bottom: none; }

/* 比較項目ラベルセル（th） */
.vtable-feature {
  padding: 16px 14px 16px 18px;
  font-size: .82rem; font-weight: 700; color: var(--ink-2);
  text-align: left; white-space: nowrap; vertical-align: middle;
  background: #f0f5fb;
  border-right: 2px solid var(--border);
}
.vtable-feature-icon {
  color: var(--blue-l); margin-right: 7px; font-size: .8rem;
}

/* データセル */
.vtable-cell {
  padding: 14px 10px;
  font-size: .82rem; color: var(--ink-2);
  text-align: center; vertical-align: middle;
}

/* 交互ストライプ */
.vtable-row--alt .vtable-feature { background: #e8f1fb; }
.vtable-row--alt .vtable-cell    { background: #fafcff; }

/* ロジどら２列 */
.vtable-cell--ours {
  background: linear-gradient(160deg, #eaf4ff 0%, #ddeeff 100%) !important;
  border-left: 3px solid var(--blue);
  border-right: 3px solid var(--blue);
  font-weight: 600;
}

/* ハイライト行（重要訴求） */
.vtable-row--highlight .vtable-feature { background: #deeaf8; }
.vtable-row--highlight .vtable-cell    { background: #f4f9ff; }
.vtable-row--highlight .vtable-cell--ours {
  background: linear-gradient(160deg, #ddf0ff 0%, #c8e4ff 100%) !important;
}

/* ホバー */
.vtable-row:hover .vtable-feature { background: #d4e5f8; }
.vtable-row:hover .vtable-cell     { background: #eef6ff; }
.vtable-row:hover .vtable-cell--ours {
  background: linear-gradient(160deg, #d0eaff 0%, #bdd9ff 100%) !important;
}

/* ○ 対応 */
.vtable-yes {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 5px; color: var(--blue); font-size: .82rem; font-weight: 700;
  flex-wrap: wrap;
}
.vtable-yes i { font-size: .95rem; flex-shrink: 0; }
.vtable-yes--dual { flex-direction: column; gap: 2px; text-align: center; }
.vtable-yes--dual strong { font-size: .88rem; }

/* ✗ 非対応 */
.vtable-no {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 5px; color: #bdbdbd; font-size: .82rem;
}
.vtable-no i { font-size: .95rem; }

/* － 未確認 */
.vtable-na  { color: #c8c8c8; font-size: .95rem; font-weight: 500; }

/* 固定表記 */
.vtable-fix { font-size: .78rem; color: var(--muted); }

/* 価格バッジ */
.vtable-price-tag {
  display: inline-block;
  background: var(--blue); color: var(--white);
  font-size: .8rem; font-weight: 800;
  padding: 4px 12px; border-radius: 50px; white-space: nowrap;
}

/* 用途バッジ */
.vtable-badge {
  display: inline-block; font-size: .72rem; font-weight: 800;
  padding: 3px 12px; border-radius: 50px; white-space: nowrap;
}
.vtable-badge--blue {
  background: var(--blue-soft); border: 1px solid rgba(21,101,192,.25);
  color: var(--blue);
}
.vtable-badge--gray {
  background: var(--bg-pale); border: 1px solid var(--border);
  color: var(--muted);
}

/* 注記 */
.comp-rival-note {
  font-size: .75rem; color: var(--muted);
  text-align: center; line-height: 1.8; margin-top: 16px;
}

/* =====================================================
   訴求ポイント バナーグリッド（comp-appeal-grid）
   ===================================================== */
.comp-appeal-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-bottom: 44px;
}
.comp-appeal-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; text-align: center;
  background: var(--white);
  border: 1.5px solid rgba(21,101,192,.15);
  border-radius: var(--r);
  padding: 20px 12px 18px;
  box-shadow: 0 3px 16px rgba(21,101,192,.08);
  transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr);
}
.comp-appeal-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(21,101,192,.16);
  border-color: var(--blue);
}
.comp-appeal-icon {
  font-size: 1.6rem; color: var(--blue);
}
.comp-appeal-item strong {
  font-size: .82rem; font-weight: 800; color: var(--ink); line-height: 1.4;
}
.comp-appeal-item span {
  font-size: .72rem; color: var(--muted); line-height: 1.5;
}

/* =====================================================
   比較項目 重要行（vtable-row--key）
   ===================================================== */
.vtable-row--key .vtable-feature {
  background: #cce0f8;
  border-left: 4px solid var(--blue);
}
.vtable-row--key .vtable-cell {
  background: #f0f7ff;
}
.vtable-row--key .vtable-cell--ours {
  background: linear-gradient(160deg, #d4eeff 0%, #bbd9ff 100%) !important;
  border-left: 3px solid var(--blue);
  border-right: 3px solid var(--blue);
}
.vtable-row--key.vtable-row--alt .vtable-feature {
  background: #bdd6f5;
}
.vtable-row--key.vtable-row--alt .vtable-cell {
  background: #e8f3ff;
}

/* 重要ラベル（★重要） */
.vtable-feature-note {
  display: block;
  font-size: .62rem; font-weight: 800;
  color: var(--blue); letter-spacing: .04em;
  margin-top: 3px;
}

/* 用途タグ（ヘッダー内） */
.vtable-head-tag {
  display: inline-block; font-size: .6rem; font-weight: 700;
  padding: 2px 8px; border-radius: 50px; margin-top: 2px;
}
.vtable-head-tag--consumer {
  background: var(--bg-pale);
  border: 1px solid var(--border);
  color: var(--muted);
}
.vtable-head-tag--biz {
  background: var(--blue-soft);
  border: 1px solid rgba(21,101,192,.2);
  color: var(--blue);
}

/* 用途行 強調（vtable-row--emphasis） */
.vtable-row--emphasis .vtable-feature {
  background: #deeaf8; font-size: .84rem;
}
.vtable-row--emphasis .vtable-cell { background: #f6faff; }
.vtable-row--emphasis .vtable-cell--ours {
  background: linear-gradient(160deg, #e0f0ff 0%, #cde4ff 100%) !important;
}

/* =====================================================
   ポジショニング補足ブロック（comp-position-block）
   ===================================================== */
.comp-position-block {
  margin: 36px 0 20px;
}
.comp-position-inner {
  background: linear-gradient(135deg, #f4f9ff 0%, #e8f3ff 100%);
  border: 1.5px solid rgba(21,101,192,.18);
  border-radius: var(--rl);
  padding: 32px 36px;
}
.comp-position-lead {
  font-size: .72rem; font-weight: 800; color: var(--blue);
  letter-spacing: .12em; text-transform: uppercase;
  margin-bottom: 16px;
}
.comp-position-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.comp-position-card {
  background: var(--white);
  border-radius: var(--r);
  padding: 20px 22px;
  border-left: 4px solid;
}
.comp-position-card--vs { border-color: var(--blue); }
.comp-position-label {
  font-size: .7rem; font-weight: 800;
  color: var(--blue); letter-spacing: .06em;
  margin-bottom: 8px;
}
.comp-position-text {
  font-size: .84rem; color: var(--ink-2);
  line-height: 1.7;
}
.comp-position-text strong {
  color: var(--blue); font-weight: 700;
}

/* =====================================================
   vtable-cell-sub（セル内補足テキスト）
   ===================================================== */
.vtable-cell-sub {
  display: block;
  font-size: .68rem; color: var(--muted);
  font-weight: 400; margin-top: 4px; line-height: 1.4;
}

/* =====================================================
   訴求バナー 6列モード（comp-appeal-grid--6）
   ===================================================== */
.comp-appeal-grid--6 {
  grid-template-columns: repeat(6, 1fr);
}
/* 車両信号カードは強調色 */
.comp-appeal-item--signal {
  background: linear-gradient(150deg, #e8f3ff 0%, #d4eaff 100%);
  border-color: rgba(21,101,192,.3);
}
.comp-appeal-item--signal .comp-appeal-icon {
  color: var(--blue);
}
.comp-appeal-item--signal strong {
  color: var(--blue);
}

/* =====================================================
   車両信号取得 詳細解説ブロック（signal-explain-block）
   ===================================================== */
.signal-explain-block {
  margin: 48px 0 36px;
  background: linear-gradient(150deg, #f0f7ff 0%, #e6f2ff 100%);
  border: 1.5px solid rgba(21,101,192,.18);
  border-radius: var(--rl);
  padding: 52px 48px 44px;
}

/* ヘッダー */
.signal-explain-header {
  text-align: center;
  margin-bottom: 40px;
}
.signal-explain-eyebrow {
  font-size: .7rem; font-weight: 800; letter-spacing: .2em;
  color: var(--blue); text-transform: uppercase; margin-bottom: 12px;
}
.signal-explain-title {
  font-size: 1.5rem; font-weight: 900; color: var(--ink);
  line-height: 1.5; margin-bottom: 16px;
}
.signal-explain-lead {
  font-size: .92rem; color: var(--ink-2); line-height: 1.9;
  max-width: 660px; margin: 0 auto;
}
.signal-explain-lead strong { color: var(--blue); }

/* 3枚カードグリッド */
.signal-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.signal-card {
  background: var(--white);
  border-radius: var(--r);
  border: 1.5px solid rgba(21,101,192,.12);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(21,101,192,.08);
  transition: transform var(--tr), box-shadow var(--tr);
}
.signal-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(21,101,192,.16);
}

/* アイコンバー */
.signal-card-icon {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-l) 100%);
  color: var(--white);
  font-size: 1.8rem;
  padding: 24px 0;
  text-align: center;
}

/* 本文 */
.signal-card-body {
  padding: 22px 22px 16px;
  flex: 1;
}
.signal-card-title {
  font-size: .95rem; font-weight: 900; color: var(--ink);
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.signal-card-text {
  font-size: .82rem; color: var(--ink-2);
  line-height: 1.85; margin-bottom: 14px;
}
.signal-card-text strong { color: var(--blue); font-weight: 700; }

/* 箇条書き */
.signal-card-points {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.signal-card-points li {
  font-size: .78rem; color: var(--ink-2);
  display: flex; align-items: flex-start; gap: 8px; line-height: 1.5;
}
.signal-card-points li i {
  color: var(--blue); font-size: .75rem; margin-top: 2px; flex-shrink: 0;
}

/* vs 民生用バー */
.signal-card-vs {
  background: #f8f9fc;
  border-top: 1px solid var(--border);
  padding: 12px 22px;
  display: flex; flex-direction: column; gap: 4px;
}
.signal-card-vs-label {
  font-size: .65rem; font-weight: 800;
  color: var(--muted); letter-spacing: .08em; text-transform: uppercase;
}
.signal-card-vs-text {
  font-size: .75rem; color: var(--muted); line-height: 1.5;
}

/* サマリーバー */
.signal-summary {
  background: var(--white);
  border: 1.5px solid rgba(21,101,192,.2);
  border-radius: var(--r);
  padding: 20px 28px;
  display: flex; align-items: flex-start; gap: 16px;
}
.signal-summary-icon {
  font-size: 1.4rem; color: #f5a623; flex-shrink: 0; margin-top: 2px;
}
.signal-summary p {
  font-size: .88rem; color: var(--ink-2); line-height: 1.85; margin: 0;
}
.signal-summary strong { color: var(--blue); font-weight: 700; }

/* =====================================================
   レスポンシブ（比較セクション）
   ===================================================== */
@media (max-width: 1100px) {
  .comp-appeal-grid--6 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 960px) {
  .comp-appeal-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .signal-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .signal-explain-block {
    padding: 36px 28px 32px;
  }
}
@media (max-width: 640px) {
  .comp-appeal-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .comp-appeal-grid--6 {
    grid-template-columns: repeat(2, 1fr);
  }
  .comp-appeal-item {
    padding: 16px 10px 14px;
  }
  .comp-appeal-icon { font-size: 1.3rem; }
  .comp-appeal-item strong { font-size: .76rem; }
  .comp-appeal-item span { font-size: .68rem; }

  .comp-position-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .comp-position-inner {
    padding: 22px 18px;
  }

  .signal-explain-block {
    padding: 28px 18px 24px;
  }
  .signal-explain-title { font-size: 1.2rem; }
  .signal-summary {
    flex-direction: column; gap: 10px; padding: 16px 18px;
  }
}

/* =====================================================
   OPTION CAMERAS — 2-card grid in spec section
   ===================================================== */
.option-cameras {
  margin-top: 52px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--rl); padding: 44px; box-shadow: var(--sh);
}
.option-cameras-title {
  font-size: 1.05rem; font-weight: 800; color: var(--ink);
  text-align: center; margin-bottom: 32px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.option-cameras-title i { color: var(--blue); }

.option-cameras-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 24px; margin-bottom: 20px;
}

.option-cam-card {
  border: 1.5px solid var(--border); border-radius: var(--r);
  overflow: hidden; background: var(--bg-pale);
  display: flex; flex-direction: column;
  transition: box-shadow var(--tr), transform var(--tr), border-color var(--tr);
}
.option-cam-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(21,101,192,.13);
  border-color: rgba(21,101,192,.25);
}

/* 画像エリア */
.option-cam-img-wrap {
  background: var(--white); padding: 32px 24px;
  display: flex; align-items: center; justify-content: center;
  min-height: 180px; border-bottom: 1px solid var(--border);
}
.option-cam-img-wrap img {
  max-width: 100%; max-height: 140px;
  object-fit: contain; display: block;
}

/* テキストエリア */
.option-cam-body {
  padding: 22px 24px; display: flex; flex-direction: column; gap: 8px;
}
.option-cam-model {
  font-size: .68rem; font-weight: 700; letter-spacing: .22em;
  color: var(--blue-l); text-transform: uppercase;
}
.option-cam-name {
  font-size: 1rem; font-weight: 800; color: var(--ink); line-height: 1.35;
}
.option-cam-name span {
  font-size: .78rem; font-weight: 600; color: var(--muted);
}
.option-cam-specs {
  display: flex; flex-direction: column; gap: 7px; margin: 6px 0;
}
.option-cam-specs li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .83rem; color: var(--ink-2);
}
.option-cam-specs li .fas.fa-check {
  color: var(--blue); font-size: .75rem; margin-top: 4px; flex-shrink: 0;
}

/* バッジ */
.option-cam-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .72rem; font-weight: 700; padding: 4px 12px;
  border-radius: 50px; margin-top: 4px; align-self: flex-start;
  letter-spacing: .03em;
}
.option-cam-badge--indoor {
  background: #f0f4ff; color: #5c6bc0;
  border: 1px solid rgba(92,107,192,.25);
}
.option-cam-badge--outdoor {
  background: #e8f5e9; color: #2e7d32;
  border: 1px solid rgba(46,125,50,.25);
}

.option-cameras-note {
  font-size: .78rem; color: var(--muted); text-align: center; line-height: 1.7;
}

/* Responsive */
@media (max-width: 600px) {
  .option-cameras { padding: 28px 20px; }
  .option-cameras-grid { grid-template-columns: 1fr; gap: 16px; }
  .option-cam-img-wrap { min-height: 150px; padding: 24px 20px; }
}

/* =====================================================
   FEATURE 05 — Upgrade Visual Enhancement
   ===================================================== */
/* アップグレードビジュアル（3パーツ：standalone → arrow → connected） */
.feature-upgrade-visual {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; padding: 24px 16px 8px;
}
.upgrade-step {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 18px; border-radius: 14px;
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  min-width: 80px;
}
.upgrade-step i { font-size: 1.8rem; }
.upgrade-step-standalone {
  background: rgba(255,255,255,.1); border: 1.5px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.8);
}
.upgrade-step-connected {
  background: rgba(30,136,229,.22); border: 1.5px solid rgba(30,136,229,.55);
  color: #64b5f6;
  box-shadow: 0 0 22px rgba(30,136,229,.28);
}
.upgrade-arrow {
  display: flex; align-items: center; color: rgba(100,181,246,.7);
  font-size: 1.3rem;
}
.upgrade-badge {
  display: flex; align-items: center; gap: 6px;
  margin-top: 4px;
}
.feature-upgrade-cta {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 18px; padding: 10px 20px;
  background: var(--blue-soft); color: var(--blue);
  border-radius: 50px; font-size: .84rem; font-weight: 700;
  border: 1.5px solid rgba(21,101,192,.22);
  transition: all var(--tr);
  text-decoration: none;
}
.feature-upgrade-cta:hover {
  background: var(--blue); color: var(--white);
  transform: translateX(4px);
}

/* =====================================================
   UPGRADE COMPARISON SECTION
   ===================================================== */
.upgrade-section {
  padding: 100px 0;
  background: var(--white);
  position: relative;
}
.upgrade-section::before {
  content: ''; position: absolute;
  left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, #42a5f5 50%, var(--blue) 100%);
  opacity: .18;
}

/* ---- Upgrade flow cards ---- */
.upgrade-flow {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 0; align-items: center;
  max-width: 820px; margin: 0 auto 64px;
}
.upgrade-flow-card {
  border-radius: var(--rl); padding: 40px 36px;
  text-align: center; border: 1.5px solid var(--border);
  box-shadow: var(--sh);
  transition: transform var(--tr), box-shadow var(--tr);
}
.upgrade-flow-card:hover {
  transform: translateY(-5px);
}
.upgrade-flow-card--standalone {
  background: var(--bg-pale);
  border-color: var(--border);
}
.upgrade-flow-card--standalone .upgrade-flow-icon {
  background: var(--white); border: 2px solid var(--border);
  color: var(--muted);
}
.upgrade-flow-card--connected {
  background: linear-gradient(135deg, #eef6ff 0%, #ddeeff 100%);
  border-color: rgba(21,101,192,.25);
  box-shadow: 0 8px 36px rgba(21,101,192,.13);
}
.upgrade-flow-card--connected .upgrade-flow-icon {
  background: var(--blue); color: var(--white);
  box-shadow: var(--sh-blue);
}
.upgrade-flow-card--connected h3 { color: var(--blue); }

.upgrade-flow-icon {
  width: 68px; height: 68px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.7rem; margin: 0 auto 18px;
  transition: transform var(--tr);
}
.upgrade-flow-card:hover .upgrade-flow-icon { transform: scale(1.08); }
.upgrade-flow-label {
  font-size: .68rem; font-weight: 700; letter-spacing: .18em;
  color: var(--blue-l); text-transform: uppercase; margin-bottom: 6px;
}
.upgrade-flow-card h3 {
  font-size: 1.05rem; font-weight: 800; color: var(--ink);
  margin-bottom: 12px; line-height: 1.35;
}
.upgrade-flow-card p {
  font-size: .84rem; color: var(--muted); line-height: 1.8;
}

.upgrade-flow-arrow {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 0 24px; color: var(--blue);
}
.upgrade-flow-arrow i { font-size: 1.6rem; }
.upgrade-flow-arrow span {
  font-size: .68rem; font-weight: 700; color: var(--blue-l);
  letter-spacing: .05em; text-align: center; line-height: 1.4;
  white-space: nowrap;
}

/* ---- Comparison table ---- */
.comparison-wrap {
  max-width: 820px; margin: 0 auto 56px;
  background: var(--white); border-radius: var(--rl);
  border: 1px solid var(--border); box-shadow: var(--sh);
  overflow: hidden;
}
.comparison-title {
  font-size: 1rem; font-weight: 800; color: var(--ink);
  text-align: center; padding: 28px 28px 0;
  margin-bottom: 20px;
}
.comparison-table-wrap { overflow-x: auto; padding: 0 0 4px; }
.comparison-table {
  width: 100%; border-collapse: collapse; min-width: 520px;
}
.comparison-table caption {
  font-size: 0; visibility: hidden; height: 0;
}
/* Header row */
.comparison-table thead tr {
  background: var(--bg-pale); border-bottom: 2px solid var(--border);
}
.comparison-table thead th {
  padding: 18px 20px; text-align: center; font-weight: 700;
  vertical-align: middle;
}
.comp-feature-col { text-align: left !important; width: 46%; }
.comp-standalone-col { width: 27%; }
.comp-connected-col  {
  width: 27%;
  background: linear-gradient(135deg, rgba(21,101,192,.07) 0%, rgba(30,136,229,.1) 100%);
  border-left: 2px solid rgba(21,101,192,.2);
}
.comp-plan-icon {
  display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--white); border: 1.5px solid var(--border);
  margin: 0 auto 8px; font-size: 1.05rem; color: var(--muted);
}
.comp-plan-icon--blue {
  background: var(--blue); border-color: var(--blue); color: var(--white);
  box-shadow: var(--sh-blue);
}
.comp-plan-name {
  display: block; font-size: .9rem; font-weight: 800; color: var(--ink);
  margin-bottom: 3px;
}
.comp-connected-col .comp-plan-name { color: var(--blue); }
.comp-plan-sub {
  display: block; font-size: .7rem; color: var(--muted); font-weight: 500;
}

/* Body rows */
.comparison-table tbody td {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  font-size: .87rem;
}
.comp-feature {
  color: var(--ink-2); font-weight: 500; text-align: left;
}
.comp-check { text-align: center; }
.comp-yes  { color: var(--blue); font-size: 1.05rem; }
.comp-no   { color: #b0bec5; font-size: 1rem; }

/* Upgrade rows (highlight) */
.comp-row-upgrade td { background: linear-gradient(135deg, #f0f6ff 0%, #e8f2ff 100%); }
.comp-row-upgrade .comp-feature {
  color: var(--blue); font-weight: 600;
}
.comp-connected-col ~ td.comp-check,
.comp-row-upgrade td.comp-check:last-child {
  background: rgba(21,101,192,.06);
  border-left: 2px solid rgba(21,101,192,.15);
}
.comp-upgrade-label {
  display: inline-block; font-size: .64rem; font-weight: 700;
  color: var(--white); background: var(--blue);
  padding: 1px 8px; border-radius: 50px; margin-right: 6px;
  vertical-align: middle; white-space: nowrap;
}
/* 連動列を常にハイライト */
.comparison-table tbody tr td:last-child {
  border-left: 2px solid rgba(21,101,192,.1);
  background: rgba(21,101,192,.03);
}
.comparison-table tbody tr:last-child td { border-bottom: none; }
.comparison-table tbody tr:hover td { background: #f4f8ff; }
.comparison-note {
  font-size: .76rem; color: var(--muted);
  text-align: center; padding: 16px 28px 24px;
  line-height: 1.7;
}

/* ---- Upgrade CTA ---- */
.upgrade-cta-wrap {
  text-align: center; max-width: 560px; margin: 0 auto;
}
.upgrade-cta-lead {
  font-size: 1.08rem; font-weight: 600; color: var(--ink);
  line-height: 1.75; margin-bottom: 28px;
}
.upgrade-cta-btns {
  display: flex; justify-content: center; gap: 14px; flex-wrap: wrap;
}

/* =====================================================
   RESPONSIVE — 1100px
   ===================================================== */
@media (max-width: 1100px) {
  .problems-grid { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================
   RESPONSIVE — 1024px
   ===================================================== */
@media (max-width: 1024px) {
  .upgrade-flow { grid-template-columns: 1fr; gap: 20px; max-width: 480px; }
  .upgrade-flow-arrow { flex-direction: row; padding: 0; }
  .upgrade-flow-arrow i { transform: rotate(90deg); }
  .upgrade-flow-card { padding: 32px 24px; }

  /* 縦型比較テーブルはスクロール許容 */
  .vtable-wrap { border-radius: var(--r); }
  .hero-content { grid-template-columns: 1fr; gap: 48px; padding: 80px 28px 64px; }
  .hero-visual-col { order: -1; }
  .hero-logo-showcase { max-width: 100%; }
  .hero-stats { max-width: 100%; }

  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row-reverse { direction: ltr; }

  .spec-wrap { grid-template-columns: 1fr; }
  .spec-img-placeholder { max-width: 380px; margin: 0 auto; }

  .flow-steps { grid-template-columns: repeat(2, 1fr); gap: 44px; }
  .flow-steps::before { display: none; }
  .flow-step-icon { box-shadow: var(--sh-blue); }
}

/* =====================================================
   RESPONSIVE — 900px
   ===================================================== */
@media (max-width: 900px) {
  .site-nav, .btn-header { display: none; }
  .hamburger { display: flex; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-company { text-align: left; }
  .footer-bottom { justify-content: center; text-align: center; }
}

/* =====================================================
   RESPONSIVE — 768px
   ===================================================== */
@media (max-width: 768px) {
  :root { --hh: 60px; }
  .hero-title { font-size: 2.1rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 36px 28px 32px; }
  .comparison-table { min-width: 440px; font-size: .8rem; }
  .comparison-table thead th { padding: 14px 12px; }
  .comparison-table tbody td { padding: 12px 12px; }
  .comp-plan-icon { width: 36px; height: 36px; font-size: .9rem; }
  .comp-plan-name { font-size: .82rem; }
  .upgrade-cta-btns { flex-direction: column; align-items: center; }

  /* 縦型比較テーブル：スマホでは列幅を保って横スクロールで見せる（560pxまで圧縮すると列が狭すぎて折り返しで崩れるため） */
  .vtable-scroll-hint { display: flex; }
  .vtable { min-width: 760px; }
  .vtable-feature { font-size: .72rem; padding: 11px 8px 11px 10px; }
  .vtable-cell { font-size: .72rem; padding: 10px 5px; }
  .vtable-head-model { font-size: .72rem; }
  .vtable-yes, .vtable-no { font-size: .72rem; }
  .vtable-price-tag { font-size: .7rem; padding: 2px 7px; }
  .vtable-wrap { -webkit-overflow-scrolling: touch; }
}

@media (max-width: 600px) {
  .related-grid { grid-template-columns: 1fr; max-width: 480px; }
}

/* =====================================================
   RESPONSIVE — 480px
   ===================================================== */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-content { padding: 56px 16px 60px; }
  .hero-title { font-size: 1.85rem; }
  .hero-actions { flex-direction: column; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }

  .problems-grid { grid-template-columns: 1fr; }
  .flow-steps    { grid-template-columns: 1fr; }

  .rec-time-section { padding: 28px 16px; }
  .contact-form { padding: 28px 20px 24px; }

  .faq-question { padding: 18px 20px; font-size: .88rem; }
  .faq-answer   { padding: 4px 20px 18px; }

  .back-to-top { bottom: 16px; right: 16px; width: 44px; height: 44px; }
  .site-logo img { height: 32px; mix-blend-mode: multiply; }

  .comparison-wrap { border-radius: var(--r); }
  .upgrade-flow { max-width: 100%; }
  .upgrade-flow-card { padding: 24px 16px; }
  .feature-upgrade-visual { gap: 8px; }
  .upgrade-step { padding: 12px 10px; min-width: 68px; }
  .upgrade-step i { font-size: 1.4rem; }
}