/* =====================================================
   Claude Code 法人導入支援 LP - styles.css
   Tailwind (CDN) の補助。セクション固有のコンポーネント定義。
   ===================================================== */

:root {
  --ink: #1A1A1A;
  --ink-soft: #55514E;
  --sand: #FAFAF7;
  --sand-line: #E8E4DF;
  --clay: #CC785C;
  --clay-deep: #B66548;
}

html {
  scroll-behavior: smooth;
}

body {
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}

/* ---------- Hero grid overlay ---------- */
.hero-grid {
  background-image:
    linear-gradient(to right, rgba(26, 26, 26, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26, 26, 26, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 30% 40%, rgba(0, 0, 0, 0.8), transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 30% 40%, rgba(0, 0, 0, 0.8), transparent 75%);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.9s cubic-bezier(.2,.7,.2,1), transform 0.9s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Problem cards ---------- */
.problem-card {
  position: relative;
  padding: 28px 26px 30px;
  background: #fff;
  border: 1px solid var(--sand-line);
  border-radius: 8px;
  transition: transform 0.35s cubic-bezier(.2,.7,.2,1), border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--clay);
  transition: width 0.5s cubic-bezier(.2,.7,.2,1);
}
.problem-card:hover {
  transform: translateY(-3px);
  border-color: var(--ink);
  box-shadow: 0 18px 36px -24px rgba(0, 0, 0, 0.25);
}
.problem-card:hover::before {
  width: 100%;
}
.problem-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #FFF2EC;
  color: var(--clay);
  margin-bottom: 18px;
  transition: background 0.3s, color 0.3s;
}
.problem-icon svg {
  width: 22px;
  height: 22px;
}
.problem-card:hover .problem-icon {
  background: var(--clay);
  color: #fff;
}
.problem-title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
  margin-bottom: 8px;
}
.problem-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- Pillar cards (3 pillars) ---------- */
.pillar-card {
  position: relative;
  padding: 44px 32px 40px;
  border: 1px solid var(--sand-line);
  border-radius: 6px;
  background: #fff;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  overflow: hidden;
}
.pillar-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 32px;
  width: 28px;
  height: 3px;
  background: var(--clay);
  transition: width 0.5s cubic-bezier(.2,.7,.2,1);
}
.pillar-card:hover {
  border-color: var(--ink);
  transform: translateY(-3px);
  box-shadow: 0 18px 36px -24px rgba(0, 0, 0, 0.25);
}
.pillar-card:hover::after {
  width: calc(100% - 64px);
}
.pillar-num {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: 88px;
  line-height: 1;
  letter-spacing: -0.06em;
  color: var(--clay);
  margin-bottom: 18px;
  display: inline-block;
}
.pillar-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.pillar-desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- Staircase (Section 4) ---------- */
.staircase-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 32px 28px 36px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  position: relative;
  transition: background 0.3s, border-color 0.3s;
}
.staircase-row:hover {
  border-color: var(--clay);
  background: rgba(204, 120, 92, 0.05);
}
.staircase-row--mid {
  margin-left: 5%;
}
.staircase-row--top {
  margin-left: 10%;
  border-color: rgba(204, 120, 92, 0.4);
  background: rgba(204, 120, 92, 0.06);
}
.staircase-num {
  font-family: 'Inter', sans-serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--clay);
  letter-spacing: -0.03em;
  line-height: 1;
}
.staircase-head {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}
.staircase-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.staircase-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}
.staircase-price {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: #fff;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.staircase-price.free {
  color: var(--clay);
  font-size: 20px;
}
.staircase-price.highlight {
  color: var(--clay);
}
.staircase-price .unit {
  font-size: 13px;
  margin-left: 2px;
  color: rgba(255, 255, 255, 0.6);
}
.staircase-price.free .unit,
.staircase-price.highlight .unit {
  color: var(--clay);
  opacity: 0.8;
}
.staircase-desc {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}
.staircase-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
}
.staircase-list li {
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}
@media (max-width: 768px) {
  .staircase-row,
  .staircase-row--mid,
  .staircase-row--top {
    margin-left: 0;
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 24px 20px 28px;
  }
  .staircase-num {
    font-size: 32px;
  }
  .staircase-title {
    font-size: 20px;
  }
}

/* ---------- Package cards (Section 5) ---------- */
.pkg-card {
  position: relative;
  padding: 36px 32px 40px;
  border: 1px solid var(--sand-line);
  border-radius: 6px;
  background: #fff;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.pkg-card:hover {
  border-color: var(--ink);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px -20px rgba(0, 0, 0, 0.3);
}
.pkg-card--accent {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.pkg-card--accent:hover {
  border-color: var(--clay);
}
.pkg-tag {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--clay);
  margin-bottom: 20px;
}
.pkg-title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.pkg-target {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 20px;
}
.pkg-card--accent .pkg-target {
  color: rgba(255, 255, 255, 0.6);
}
.pkg-divider {
  width: 32px;
  height: 2px;
  background: var(--clay);
  margin-bottom: 20px;
}
.pkg-lead {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
  margin-bottom: 20px;
}
.pkg-list {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-top: auto;
}
.pkg-card--accent .pkg-list {
  color: rgba(255, 255, 255, 0.75);
}
.pkg-list li {
  padding-left: 18px;
  position: relative;
}
.pkg-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--clay);
}

/* ---------- Case cards (Section 6) - digirise style ---------- */
.case-card {
  padding: 32px 30px 30px;
  background: #fff;
  border: 1px solid var(--sand-line);
  border-radius: 8px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  border-color: var(--clay);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -28px rgba(0, 0, 0, 0.22);
}
.case-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.case-num-tag {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  color: var(--clay);
  letter-spacing: 0.18em;
  padding: 5px 10px 4px;
  border: 1px solid var(--clay);
  border-radius: 999px;
  line-height: 1;
}
.case-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #FFF2EC;
  color: var(--clay);
  transition: background 0.3s, color 0.3s;
  flex-shrink: 0;
}
.case-icon svg {
  width: 22px;
  height: 22px;
}
.case-card:hover .case-icon {
  background: var(--clay);
  color: #fff;
}
.case-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.case-desc {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 22px;
  flex: 1;
}
.case-result {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: stretch;
  padding: 20px 22px;
  background: var(--sand);
  border-radius: 8px;
}
.case-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
}
.compare-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.compare-label {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.compare-value {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  white-space: nowrap;
}
.compare-col.before .compare-value {
  color: var(--ink-soft);
  text-decoration: line-through;
  text-decoration-color: rgba(85, 81, 78, 0.5);
}
.compare-col.after .compare-value {
  color: var(--ink);
}
.compare-arrow {
  color: var(--clay);
  width: 18px;
  height: 18px;
}
.compare-arrow svg {
  width: 100%;
  height: 100%;
}
.case-rate {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-family: 'Inter', sans-serif;
  line-height: 1;
  border-left: 1px solid var(--sand-line);
  padding-left: 22px;
}
.case-rate .rate-arrow {
  font-size: 14px;
  color: var(--clay);
  margin-right: 4px;
  line-height: 1;
  position: relative;
  top: -4px;
}
.case-rate .rate-num {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--clay);
}
.case-rate .rate-unit {
  font-size: 16px;
  font-weight: 700;
  color: var(--clay);
  margin-left: 2px;
}
@media (max-width: 640px) {
  .case-result {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .case-rate {
    border-left: none;
    border-top: 1px solid var(--sand-line);
    padding-left: 0;
    padding-top: 16px;
    justify-content: flex-end;
  }
  .case-rate .rate-num {
    font-size: 36px;
  }
}

/* ---------- Process steps (Section 7) ---------- */
.process-step {
  position: relative;
  padding: 28px 24px 32px;
  background: var(--sand);
  border-radius: 6px;
  border: 1px solid var(--sand-line);
  transition: border-color 0.3s;
}
.process-step:hover {
  border-color: var(--clay);
}
.process-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--clay);
  letter-spacing: 0.2em;
  margin-bottom: 14px;
}
.process-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.process-desc {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- Onboarding cards (Section 8) ---------- */
.onb-card {
  padding: 28px 24px 32px;
  background: #fff;
  border: 1px solid var(--sand-line);
  border-radius: 6px;
  transition: border-color 0.3s, transform 0.3s;
}
.onb-card:hover {
  border-color: var(--clay);
  transform: translateY(-2px);
}
.onb-num {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}
.onb-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.onb-desc {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- Price rows (Section 9) ---------- */
.price-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.5fr) auto;
  align-items: center;
  gap: 24px;
  padding: 28px 0;
}
.price-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.price-id {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--clay);
  letter-spacing: 0.15em;
}
.price-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}
.price-amount {
  font-family: 'Inter', sans-serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: right;
  white-space: nowrap;
}
.price-amount .unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  margin-left: 2px;
}
.price-amount .free {
  color: var(--clay);
}
.price-amount.highlight {
  color: var(--clay);
}
@media (max-width: 768px) {
  .price-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 24px 0;
  }
  .price-desc {
    margin-bottom: 6px;
  }
  .price-amount {
    text-align: left;
    font-size: 22px;
  }
}

/* ---------- FAQ (Section 10) ---------- */
.faq-item {
  background: #fff;
  border: 1px solid var(--sand-line);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item[open] {
  border-color: var(--clay);
}
.faq-item summary {
  list-style: none;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '';
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23CC785C'><path d='M12 16l-6-6 1.41-1.41L12 13.17l4.59-4.58L18 10z'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
}
.faq-answer {
  padding: 0 28px 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- Contact form (Section 11) ---------- */
.form-field {
  display: block;
}
.form-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 8px;
}
.form-label em {
  font-style: normal;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  background: var(--clay);
  color: #fff;
  border-radius: 2px;
  letter-spacing: 0.05em;
}
.form-label .opt {
  font-size: 10px;
  font-weight: 500;
  padding: 2px 7px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.6);
  border-radius: 2px;
  letter-spacing: 0.05em;
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.2s, background 0.2s;
}
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--clay);
  background: rgba(255, 255, 255, 0.08);
}
.form-field textarea {
  resize: vertical;
  min-height: 120px;
}
.radio-opt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  cursor: pointer;
}
.radio-opt input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--clay);
  cursor: pointer;
}

/* ---------- Footer company table ---------- */
.company-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  align-items: start;
  padding: 6px 0;
}
.company-row dt {
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
  padding-top: 2px;
}
.company-row dd {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- Utilities ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* Selection color */
::selection {
  background: var(--clay);
  color: #fff;
}