/* ==========================================================================
   株式会社コーセンテック — サイト共通スタイル
   デザイン方針: 白基調 / ダークネイビー見出し / オレンジは小さなアクセントのみ
   ========================================================================== */

:root {
  --color-navy: #082F6C;
  --color-navy-2: #0649A5;
  --color-navy-3: #06439A;
  --color-orange: #F7941D;
  --color-purple: #7137A6;
  --color-green: #268B37;
  --color-text: #2b2b2b;
  --color-text-light: #555;
  --color-bg: #ffffff;
  --color-bg-soft: #F7F8FA;
  --color-border: #e3e6ea;
  --font-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-jp);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  section { padding: 56px 0; }
  .container { padding: 0 20px; }
}

/* ---------- Headings ---------- */
h1, h2, h3, h4 {
  color: var(--color-navy);
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 24px;
}

.section-title {
  font-size: clamp(26px, 4vw, 40px);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section-lead {
  text-align: center;
  color: var(--color-text-light);
  font-size: 16px;
  margin-bottom: 48px;
}

.section-sub {
  display: block;
  font-size: 14px;
  color: var(--color-orange);
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
  text-align: center;
}

.divider {
  width: 60px;
  height: 3px;
  background: var(--color-orange);
  margin: 0 auto 32px;
  border: none;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(6px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.03em;
}
.brand span { color: var(--color-orange); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-navy);
}

.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--color-orange);
}

.nav-cta {
  background: var(--color-orange);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 700;
}
.nav-cta:hover { background: #e07f0a; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--color-navy);
  cursor: pointer;
  padding: 4px 8px;
}

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(0,0,0,0.06);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }
  .main-nav a:last-child { border-bottom: none; }
  .nav-cta {
    text-align: center;
    margin-top: 10px;
  }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background: var(--color-navy);
  overflow: hidden;
}

.hero img.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,47,108,0.55) 0%, rgba(8,47,108,0.75) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 120px 24px 90px;
  text-align: center;
}

.hero-inner h1 {
  color: #fff;
  font-size: clamp(28px, 5vw, 48px);
  margin-bottom: 20px;
}

.hero-inner p {
  font-size: clamp(15px, 2vw, 18px);
  max-width: 640px;
  margin: 0 auto 32px;
  color: #f2f4f8;
}

@media (max-width: 768px) {
  .hero-inner { padding: 90px 20px 60px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--color-orange);
  color: #fff;
  border-radius: 4px;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: background .2s, transform .1s;
}
.btn:hover { background: #e07f0a; transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: #fff; }

.btn-block { width: 100%; justify-content: center; }

.btn-center-wrap { text-align: center; margin-top: 32px; }

/* ---------- Generic content blocks ---------- */
.narrative-block {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}
.narrative-block p { margin: 0 0 8px; }

.catchphrase {
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  color: var(--color-navy);
  text-align: center;
  margin: 0 0 28px;
  line-height: 1.6;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 768px) {
  .two-col { grid-template-columns: 1fr; gap: 24px; }
}

.img-rounded { border-radius: 6px; overflow: hidden; }
.img-rounded img { width: 100%; }

/* Photo grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 40px 0;
}
@media (max-width: 768px) {
  .photo-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
}
.photo-grid figure { margin: 0; }
.photo-grid img { border-radius: 6px; aspect-ratio: 4/3; object-fit: cover; }
.photo-grid figcaption {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 8px;
}

/* Step flow */
.flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 40px 0;
}
.flow-step {
  flex: 1 1 140px;
  max-width: 200px;
  text-align: center;
  padding: 20px 12px;
  background: var(--color-bg-soft);
  border-radius: 6px;
}
.flow-step .num {
  color: var(--color-orange);
  font-weight: 700;
  font-size: 22px;
  display: block;
  margin-bottom: 6px;
}
.flow-step .label { font-weight: 700; margin-bottom: 6px; }
.flow-step .desc { font-size: 13px; color: var(--color-text-light); }
.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--color-orange);
  font-size: 20px;
  padding: 0 2px;
}
@media (max-width: 768px) {
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); align-self: center; padding: 4px; }
  .flow-step { max-width: 100%; }
}

/* Framework 4-box (調べる/修繕する/交換する/設備を更新する) */
.framework-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 40px 0;
}
@media (max-width: 900px) {
  .framework-grid { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 560px) {
  .framework-grid { grid-template-columns: 1fr !important; }
}
.framework-box {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px 18px;
  text-align: center;
  background: #fff;
}
.framework-box.accent {
  border-color: var(--color-orange);
  background: #fffaf2;
}
.framework-box h3 {
  font-size: 20px;
  margin-bottom: 12px;
}
.framework-box.accent h3 { color: var(--color-orange); }
.framework-box p { font-size: 14px; color: var(--color-text-light); margin: 0; }

/* Pricing cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr !important; }
}
.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 36px 28px;
  text-align: center;
  background: #fff;
  display: flex;
  flex-direction: column;
}
.pricing-card.featured {
  border: 2px solid var(--color-navy);
  box-shadow: 0 12px 30px rgba(8,47,108,0.08);
}
.pricing-card .tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-orange);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.pricing-card h3 { font-size: 20px; margin-bottom: 14px; }
.pricing-card .scope {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 18px;
  min-height: 60px;
}
.pricing-card .price {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 4px;
}
.pricing-card .price strong {
  font-size: 40px;
  color: var(--color-navy);
  font-weight: 700;
}
.pricing-card .price small { font-size: 16px; }
.pricing-card .tax-note { font-size: 12px; color: #999; margin-bottom: 20px; }
.pricing-card ul {
  text-align: left;
  font-size: 13px;
  color: var(--color-text-light);
  padding-left: 18px;
  margin: 0 0 20px;
  flex-grow: 1;
}

/* Main plan (featured, large) */
.pricing-main {
  border: 2px solid var(--color-navy);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(8,47,108,0.10);
  padding: 44px 40px;
  margin: 40px 0 32px;
}
.pricing-main .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--color-navy);
  letter-spacing: 0.1em;
  padding: 6px 14px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.pricing-main h3 { font-size: 24px; margin-bottom: 8px; }
.pricing-main .scope {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}
.pricing-main .price {
  font-size: 17px;
  color: var(--color-text-light);
  margin-bottom: 4px;
}
.pricing-main .price strong {
  font-size: 56px;
  color: var(--color-navy);
  font-weight: 900;
  line-height: 1;
}
.pricing-main .price small { font-size: 20px; font-weight: 700; color: var(--color-navy); }
.pricing-main-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
@media (max-width: 768px) {
  .pricing-main-grid { grid-template-columns: 1fr; gap: 24px; }
  .pricing-main { padding: 32px 24px; }
  .pricing-main .price strong { font-size: 44px; }
}
.pricing-main ul {
  font-size: 14px;
  color: var(--color-text-light);
  padding-left: 20px;
  margin: 0;
}
.pricing-main ul li { margin-bottom: 6px; }

/* Options sub-heading + smaller option cards */
.pricing-options-label {
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.pricing-options-label::before,
.pricing-options-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.pricing-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 700px) {
  .pricing-options-grid { grid-template-columns: 1fr; }
}
.pricing-option-card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  padding: 24px 22px;
  text-align: center;
}
.pricing-option-card .tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-orange);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  display: block;
}
.pricing-option-card h3 { font-size: 16px; margin-bottom: 8px; }
.pricing-option-card .scope {
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}
.pricing-option-card .price {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}
.pricing-option-card .price strong {
  font-size: 26px;
  color: var(--color-navy);
  font-weight: 700;
}
.pricing-option-card .price small { font-size: 13px; }
.pricing-option-card ul {
  text-align: left;
  font-size: 12px;
  color: var(--color-text-light);
  padding-left: 16px;
  margin: 0;
}
.pricing-option-card ul li { margin-bottom: 4px; }

/* Comparison table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}
.compare-table th, .compare-table td {
  border: 1px solid var(--color-border);
  padding: 14px 16px;
  text-align: left;
}
.compare-table th {
  background: var(--color-bg-soft);
  color: var(--color-navy);
}

/* Timeline */
.timeline {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 4px;
  margin: 40px 0;
}
.timeline-seg {
  flex: 1;
  min-width: 120px;
  padding: 20px 14px;
  border-radius: 6px;
  text-align: center;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.timeline-seg strong { display: block; font-size: 15px; margin-bottom: 4px; }
.seg-navy { background: var(--color-navy-2); }
.seg-orange { background: var(--color-orange); }
.seg-purple { background: var(--color-purple); }

/* Options grid (decision cards e.g. 今の設備を活かす / 売却する / 終了する) */
.option-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 40px 0;
}
@media (max-width: 900px) {
  .option-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .option-grid { grid-template-columns: 1fr; }
}
.option-card {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
}
.option-card img { aspect-ratio: 4/3; object-fit: cover; }
.option-card .body { padding: 16px; }
.option-card .num { font-weight: 700; font-size: 22px; }
.option-card .title { font-weight: 700; font-size: 16px; margin: 6px 0 8px; }
.option-card .desc { font-size: 13px; color: var(--color-text-light); }
.option-card.color-navy .num,
.option-card.color-navy .title { color: var(--color-navy-2); }
.option-card.color-orange .num,
.option-card.color-orange .title { color: var(--color-orange); }
.option-card.color-green .num,
.option-card.color-green .title { color: var(--color-green); }
.option-card.color-purple .num,
.option-card.color-purple .title { color: var(--color-purple); }

/* Checklist */
.checklist { list-style: none; padding: 0; margin: 0 0 24px; }
.checklist li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 8px;
  font-size: 15px;
}
.checklist li::before {
  content: "\2611";
  position: absolute;
  left: 0;
  color: var(--color-navy);
}

/* Soft callout box */
.callout {
  background: var(--color-bg-soft);
  border-left: 4px solid var(--color-orange);
  border-radius: 4px;
  padding: 24px 28px;
  margin: 32px 0;
}

/* Season row */
.season-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 40px 0;
  text-align: center;
}
@media (max-width: 768px) {
  .season-grid { grid-template-columns: 1fr 1fr; }
}
.season-grid .season-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
}
.season-grid p { font-size: 13px; color: var(--color-text-light); margin: 0; }

/* Section bg variants */
.bg-soft { background: var(--color-bg-soft); }
.bg-navy { background: var(--color-navy); color: #fff; }
.bg-navy h1, .bg-navy h2, .bg-navy h3 { color: #fff; }

/* Final CTA section */
.final-cta { text-align: center; }
.final-cta h2 { margin-bottom: 16px; }
.final-cta p { color: var(--color-text-light); margin-bottom: 32px; }

/* Contact info row inside CTA */
.contact-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.contact-inline .divider-v {
  width: 1px;
  height: 32px;
  background: var(--color-border);
}
.contact-inline .label { font-weight: 700; color: var(--color-navy); }
.contact-inline .sub { font-size: 13px; color: var(--color-text-light); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy);
  color: #d8dfeb;
  padding: 60px 0 30px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 40px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
.footer-grid h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
}
.footer-grid p { margin: 0 0 6px; line-height: 1.7; }
.footer-grid a { display: block; margin-bottom: 8px; color: #d8dfeb; }
.footer-grid a:hover { color: var(--color-orange); }
.footer-line-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #06C755;
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 700;
  margin-top: 6px;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding: 20px 20px 0;
  font-size: 12px;
  color: #9fb0cc;
}
.footer-bottom a { color: inherit; }

/* Legal / policy page content */
.legal-content {
  max-width: 760px;
  margin: 0 auto;
}
.legal-content h2 {
  font-size: 20px;
  text-align: left;
  margin: 40px 0 16px;
}
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content p {
  margin: 0 0 16px;
  color: var(--color-text);
}
.legal-content .legal-updated {
  color: var(--color-text-light);
  font-size: 13px;
  text-align: right;
  margin-bottom: 40px;
}

/* Skip link / accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #fff;
  color: var(--color-navy);
  padding: 8px 16px;
  z-index: 2000;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }