/* ===================================
   ボイスログ LP - メインスタイル
   =================================== */

/* ── リセット & ベース ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --red:    #e8334a;
  --red-dk: #c0203a;
  --navy:   #0d1b2a;
  --navy-2: #152237;
  --blue:   #3a82f7;
  --blue-lt:#e8f0fe;
  --green:  #10b981;
  --purple: #8b5cf6;
  --orange: #f59e0b;
  --teal:   #06b6d4;
  --gray-1: #f4f6f9;
  --gray-2: #e5e9f0;
  --gray-3: #b0bac9;
  --gray-4: #6b7a93;
  --text:   #1a2438;
  --text-lt:#4a5568;
  --white:  #ffffff;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.15);
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── ボタン ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  color: var(--white);
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: .95rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(232,51,74,.35);
  cursor: pointer;
  border: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232,51,74,.45);
}
.btn-primary.btn-large { padding: 18px 40px; font-size: 1.05rem; }
.btn-primary.btn-xl    { padding: 20px 52px; font-size: 1.15rem; }
.btn-primary.btn-full  { width: 100%; justify-content: center; padding: 18px; font-size: 1rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--white);
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: .95rem;
  border: 2px solid rgba(255,255,255,.45);
  transition: var(--transition);
  cursor: pointer;
}
.btn-ghost:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.7);
  transform: translateY(-2px);
}
.btn-ghost.btn-large { padding: 18px 40px; font-size: 1.05rem; }

/* ── セクション共通 ── */
.section-label {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--red);
  background: rgba(232,51,74,.08);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--navy);
}
.section-title .accent { color: var(--red); }
.section-desc {
  font-size: 1rem;
  color: var(--text-lt);
  max-width: 580px;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .section-desc { margin: 0 auto; }

/* ── ナビ ── */
.nav-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .35s, box-shadow .35s;
  padding: 0;
}
.nav-header.scrolled {
  background: rgba(13,27,42,.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 24px rgba(0,0,0,.3);
}
.nav-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.2rem;
  color: var(--white);
}
.nav-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
  color: var(--white);
}
.nav-links {
  display: flex;
  gap: 32px;
  margin-left: auto;
}
.nav-links a {
  color: rgba(255,255,255,.8);
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta-btn {
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  color: var(--white);
  font-weight: 700;
  font-size: .85rem;
  padding: 10px 22px;
  border-radius: 50px;
  transition: var(--transition);
  box-shadow: 0 3px 12px rgba(232,51,74,.35);
  white-space: nowrap;
}
.nav-cta-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,51,74,.45); }

/* ── ヒーロー ── */
.hero {
  position: relative;
  background: #0a1520;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 100px;
}
.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 55% at 50% 30%, rgba(232,51,74,.18) 0%, transparent 65%),
    radial-gradient(ellipse 80% 50% at 80% 80%, rgba(58,130,247,.10) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 70%, rgba(6,182,212,.08) 0%, transparent 55%);
  pointer-events: none;
}
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* 中央対称レイアウト */
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
}

/* 上部ラベル行 */
.hero-top-labels {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero-label-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 50px;
  letter-spacing: .04em;
}
.chip-os      { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.75); }
.chip-price   { background: rgba(245,158,11,.12);  border: 1px solid rgba(245,158,11,.3);  color: #fbbf24; }
.chip-offline { background: rgba(16,185,129,.10);  border: 1px solid rgba(16,185,129,.28); color: #34d399; }

/* メインコピー */
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.hero-title-sub {
  font-size: clamp(.85rem, 1.5vw, 1rem);
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
  background: rgba(232,51,74,.08);
  border: 1px solid rgba(232,51,74,.22);
  padding: 5px 18px;
  border-radius: 50px;
}
.hero-title-main {
  display: block;
  font-size: clamp(2.3rem, 5.5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.22;
  letter-spacing: -.01em;
}
.hero-title-main em {
  font-style: normal;
  background: linear-gradient(90deg, #f87171, var(--red), #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* サブテキスト */
.hero-desc {
  font-size: clamp(.95rem, 1.4vw, 1.1rem);
  color: rgba(255,255,255,.68);
  line-height: 1.95;
  max-width: 560px;
}
.hero-desc strong { color: rgba(255,255,255,.95); }

/* 3つの強みカード */
.hero-pillars {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
}
.hero-pillar {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 14px;
  padding: 16px 20px;
  text-align: left;
  flex: 1;
  min-width: 185px;
  max-width: 220px;
  transition: border-color .3s, transform .3s;
}
.hero-pillar:hover {
  border-color: rgba(232,51,74,.3);
  transform: translateY(-4px);
}
.pillar-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--c) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--c);
}
.hero-pillar strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.hero-pillar p {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  line-height: 1.5;
  margin: 0;
}

/* CTA行 */
.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-hero-cta {
  padding: 20px 52px;
  font-size: 1.1rem;
  letter-spacing: .03em;
}
.hero-link {
  color: rgba(255,255,255,.6);
  font-size: .92rem;
  font-weight: 600;
  transition: color .2s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-link:hover { color: var(--white); }
.hero-link i { font-size: .8rem; }



/* ── 課題セクション ── */
.problem-section {
  background: var(--navy);
  padding: 80px 24px;
  text-align: center;
}
.problem-headline .section-label { margin-bottom: 40px; }
.problem-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto 48px;
}
.problem-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 28px 22px;
  color: rgba(255,255,255,.8);
  text-align: center;
  transition: transform .3s, border-color .3s;
}
.problem-card:hover { transform: translateY(-4px); border-color: rgba(232,51,74,.35); }
.problem-card strong { color: var(--white); }
.problem-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 14px;
  color: var(--red);
}
.problem-card p { font-size: .9rem; line-height: 1.7; }
.problem-arrow {
  color: rgba(255,255,255,.5);
  font-size: .9rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.problem-arrow i { font-size: 1.5rem; color: var(--red); animation: bounce 1.5s infinite; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(8px)} }

/* ── 機能セクション ── */
.features-section {
  background: var(--gray-1);
  padding: 100px 24px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
  border: 1px solid var(--gray-2);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.feature-icon-wrap {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.icon-red    { background: rgba(232,51,74,.1);  color: var(--red); }
.icon-blue   { background: rgba(58,130,247,.1); color: var(--blue); }
.icon-green  { background: rgba(16,185,129,.1); color: var(--green); }
.icon-purple { background: rgba(139,92,246,.1); color: var(--purple); }
.icon-orange { background: rgba(245,158,11,.1); color: var(--orange); }
.icon-teal   { background: rgba(6,182,212,.1);  color: var(--teal); }
.feature-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: var(--navy); }
.feature-card p  { font-size: .9rem; color: var(--text-lt); line-height: 1.75; }

/* ── 使い方セクション ── */
.how-section {
  background: var(--white);
  padding: 100px 24px;
}
.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  text-align: center;
  padding: 36px 24px;
  background: var(--gray-1);
  border-radius: var(--radius);
  border: 1px solid var(--gray-2);
  transition: transform .3s;
}
.step:hover { transform: translateY(-6px); }
.step-number {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(232,51,74,.12);
  line-height: 1;
  margin-bottom: 12px;
  font-family: 'Inter', sans-serif;
}
.step-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  color: var(--white);
  margin: 0 auto 18px;
  box-shadow: 0 6px 20px rgba(232,51,74,.3);
}
.step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; color: var(--navy); }
.step p  { font-size: .87rem; color: var(--text-lt); line-height: 1.75; }
.step-arrow {
  align-self: center;
  color: var(--gray-3);
  font-size: 1.2rem;
  padding: 0 4px;
  flex-shrink: 0;
}

/* ── 比較セクション ── */
.benefits-section {
  background: var(--gray-1);
  padding: 100px 24px;
}
.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: .9rem;
}
.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-2);
  text-align: center;
  vertical-align: middle;
}
.comparison-table th:first-child,
.comparison-table td:first-child { text-align: left; font-weight: 600; }
.comparison-table thead th {
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
  font-size: .85rem;
  border-bottom: none;
}
.comparison-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.comparison-table thead th:last-child  { border-radius: 0 var(--radius-sm) 0 0; }
.comparison-table tr:last-child td { border-bottom: none; }
.highlight-col { background: rgba(232,51,74,.04); }
.comparison-table thead .highlight-col { background: var(--red); }
.table-logo { display: flex; align-items: center; gap: 7px; justify-content: center; font-size: .88rem; }
.badge-good { display: inline-flex; align-items: center; gap: 5px; color: var(--green); font-weight: 600; font-size: .83rem; }
.badge-bad  { display: inline-flex; align-items: center; gap: 5px; color: #ef4444; font-weight: 500; font-size: .83rem; }
.badge-neutral { display: inline-flex; align-items: center; gap: 5px; color: var(--gray-4); font-weight: 500; font-size: .83rem; }
.comparison-table tbody tr:hover td { background: rgba(232,51,74,.025); }

/* ── 料金セクション ── */
.pricing-section {
  background: var(--white);
  padding: 100px 24px;
}
.pricing-card-wrap {
  display: flex;
  justify-content: center;
}
.pricing-card {
  background: var(--white);
  border: 2px solid var(--gray-2);
  border-radius: 24px;
  padding: 52px 48px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  transition: transform .3s;
}
.pricing-card:hover { transform: translateY(-6px); }
.pricing-card-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  color: var(--white);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  padding: 6px 20px;
  border-radius: 50px;
  box-shadow: 0 4px 14px rgba(232,51,74,.35);
}
.pricing-product-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 28px;
}
.pricing-product-name i { color: var(--red); margin-right: 6px; }
.pricing-price {
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.price-note  { font-size: .8rem; color: var(--gray-4); letter-spacing: .05em; font-weight: 500; }
.price-amount { font-size: 2.2rem; font-weight: 900; color: var(--navy); font-family: 'Inter', sans-serif; }
.price-amount strong { font-size: 2.8rem; }
.price-sub { font-size: .82rem; color: var(--text-lt); }

.pricing-features {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .92rem;
  color: var(--text);
}
.pricing-features li i { color: var(--green); font-size: .9rem; flex-shrink: 0; }
.pricing-note {
  margin-top: 16px;
  font-size: .78rem;
  color: var(--gray-4);
}

/* ── CTA セクション ── */
.cta-section {
  position: relative;
  background: var(--navy);
  padding: 120px 24px;
  text-align: center;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(232,51,74,.2) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 2; }
.cta-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.3;
}
.cta-accent {
  background: linear-gradient(90deg, #f87171, var(--red), var(--orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-desc {
  font-size: 1rem;
  color: rgba(255,255,255,.72);
  line-height: 1.8;
  margin-bottom: 44px;
}
.cta-actions { margin-bottom: 36px; }
.cta-reassurance {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  color: rgba(255,255,255,.55);
  font-size: .85rem;
}
.cta-reassurance span {
  display: flex;
  align-items: center;
  gap: 7px;
}
.cta-reassurance i { color: var(--teal); }

/* ── フッター ── */
.footer {
  background: #0a1520;
  padding: 36px 24px;
  text-align: center;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--white);
  margin-bottom: 12px;
}
.footer-logo .logo-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--red), var(--red-dk));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem;
  color: var(--white);
}
.footer-copy { font-size: .78rem; color: rgba(255,255,255,.35); }

/* ── スクロールアニメーション ── */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── パーティクル ── */
.particle {
  position: absolute;
  border-radius: 50%;
  opacity: .35;
  animation: particleDrift linear infinite;
}
@keyframes particleDrift {
  0%   { transform: translateY(0) translateX(0); opacity: .35; }
  50%  { opacity: .6; }
  100% { transform: translateY(-120px) translateX(30px); opacity: 0; }
}

/* ── レスポンシブ ── */
@media (max-width: 900px) {
  .hero { padding-top: 100px; padding-bottom: 60px; }
  .nav-links { display: none; }
  .steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); }
}

@media (max-width: 640px) {
  .hero-title-main { font-size: 2.2rem; }
  .hero-pillars { flex-direction: column; align-items: center; }
  .hero-pillar { max-width: 100%; width: 100%; }
  .btn-hero-cta { width: 100%; justify-content: center; padding: 18px 32px; }
  .hero-cta-row { flex-direction: column; gap: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .comparison-table { font-size: .8rem; }
  .comparison-table th, .comparison-table td { padding: 12px 14px; }
  .pricing-card { padding: 40px 24px; }
  .cta-reassurance { gap: 16px; font-size: .78rem; }
}