/*
  Breakthrough Secretary 商品説明トップページ 専用スタイル
  - このファイルは商品説明ページ（product.html）専用。
  - ログイン画面（/login）やWebアプリ本体（/app）のスタイルは含まない。
  - 既存の styles.css とは独立。product.html からのみ読み込む。
*/

:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #18202f;
  --muted: #697386;
  --line: #dbe1ea;
  --teal: #0f766e;
  --teal-soft: #e6f5f3;
  --amber: #b46a16;
  --shadow: 0 10px 30px rgba(26, 36, 54, 0.08);
  font-family:
    "Yu Gothic UI", "Meiryo", "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

html {
  scroll-behavior: smooth;
}

a {
  color: inherit;
}

.eyebrow {
  margin: 0;
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.product-page {
  min-height: 100vh;
  background: linear-gradient(180deg, #f7fbfb 0%, #ffffff 44%, #f6f7f9 100%);
}

.public-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.public-brand,
.public-nav,
.hero-actions {
  display: flex;
  align-items: center;
}

.public-brand {
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: #f3f7f6;
  color: var(--teal);
  font-weight: 800;
}

.public-nav {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.public-nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.public-nav a:hover,
.public-nav .nav-login {
  color: var(--teal);
  background: var(--teal-soft);
}

.public-nav .nav-apply {
  border: 1px solid var(--teal);
  background: var(--teal);
  color: #fff;
}

.public-nav .nav-apply:hover {
  background: #0b625b;
  color: #fff;
}

.product-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(28px, 5vw, 58px);
  align-items: center;
  width: min(1180px, calc(100% - 36px));
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: clamp(42px, 7vw, 76px) 0;
}

.hero-copy h1 {
  margin: 10px 0 12px;
  color: #10213b;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "MS Mincho", serif;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.04;
  letter-spacing: 0;
}

.sale-status {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin: 16px 0 4px;
  padding: 9px 12px;
  border-left: 4px solid var(--amber);
  background: #fff8e8;
  color: #6e430e;
}

.sale-status strong {
  font-size: 14px;
}

.sale-status span {
  font-size: 13px;
}

.tagline {
  display: inline-flex;
  margin: 0 0 22px;
  border-left: 4px solid var(--amber);
  background: #fff7e8;
  color: #7b4a11;
  padding: 8px 12px;
  font-weight: 800;
}

.hero-lead {
  max-width: 640px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.75;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.primary-link,
.secondary-link,
.text-link {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 11px 18px;
  font-weight: 800;
  text-decoration: none;
}

.text-link {
  color: var(--teal);
  background: transparent;
}

.primary-link {
  background: var(--teal);
  color: #fff;
}

.secondary-link {
  border: 1px solid #bfe0dc;
  background: #fff;
  color: var(--teal);
}

.hero-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.hero-product-shot {
  grid-column: 1 / -1;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-product-shot img {
  display: block;
  width: 100%;
  height: auto;
}

.summary-card,
.feature-card,
.policy-card,
.company-card,
.price-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 1px 0 rgba(26, 36, 54, 0.02);
}

.summary-card {
  display: grid;
  gap: 7px;
  min-height: 96px;
  padding: 16px;
}

.summary-card span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.summary-card strong {
  color: var(--ink);
  line-height: 1.35;
}

.product-section {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(44px, 7vw, 78px) 0;
}

.intro-section {
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 8px 0 0;
  color: #10213b;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "MS Mincho", serif;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
  letter-spacing: 0;
}

.section-lead {
  margin: 0;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.9;
}

.feature-grid,
.policy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.feature-card,
.policy-card {
  padding: 20px;
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--teal-soft);
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.feature-card h3,
.policy-card h3,
.company-card h3 {
  margin: 14px 0 8px;
  font-size: 18px;
  line-height: 1.45;
}

.feature-card p,
.policy-card p,
.company-card p,
.price-details dd {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.flow-section {
  width: 100%;
  background: #f1f7f6;
  padding-left: max(18px, calc((100% - 1080px) / 2));
  padding-right: max(18px, calc((100% - 1080px) / 2));
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  display: grid;
  gap: 10px;
  align-content: start;
  min-height: 156px;
  border: 1px solid #cfe1de;
  border-radius: 8px;
  background: #fff;
  padding: 16px;
}

.flow-list span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: var(--teal);
  color: #fff;
  font-weight: 900;
}

.flow-list p {
  margin: 0;
  font-weight: 800;
  line-height: 1.55;
}

.price-card {
  display: grid;
  grid-template-columns: 1fr minmax(230px, 0.45fr);
  gap: 26px;
  padding: clamp(22px, 4vw, 34px);
}

.price-plan {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  font-weight: 900;
}

.price-note {
  margin: 8px 0 0;
  color: var(--muted);
}

.price-main {
  display: grid;
  gap: 4px;
  justify-items: end;
  align-content: start;
}

.price-main span,
.price-main small,
.price-details dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.price-main strong {
  color: var(--teal);
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1;
}

.price-details {
  grid-column: 1 / -1;
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.price-details div {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.policy-section {
  border-top: 1px solid var(--line);
}

.company-card {
  padding: 24px;
}

.company-card h3 {
  margin-top: 0;
}

.company-info {
  margin: 18px 0 0;
  border-top: 1px solid var(--line);
}

.company-info div {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.company-info dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.company-info dd {
  margin: 0;
  line-height: 1.7;
}

.company-info a {
  color: var(--teal);
  font-weight: 700;
  text-decoration: none;
}

.company-info a:hover {
  text-decoration: underline;
}

.contact-mail {
  font-weight: 700;
  color: var(--ink);
}

.contact-mail .at-mark {
  margin: 0 1px;
  color: var(--amber);
  font-weight: 900;
}

.contact-note {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.security-note {
  display: inline-flex;
  margin-top: 18px !important;
  border: 1px solid #ecd6a5;
  border-radius: 6px;
  background: #fff8e8;
  color: #7b4a11 !important;
  padding: 8px 12px;
  font-weight: 800;
}

.price-apply,
.application-mail {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--teal);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.purchase-section {
  border-top: 1px solid var(--line);
}

.purchase-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.purchase-flow li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  min-height: 150px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.purchase-flow li > span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-weight: 900;
}

.purchase-flow strong {
  display: block;
  margin: 5px 0 8px;
}

.purchase-flow p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.purchase-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid #b9dcd7;
  border-radius: 6px;
  background: #eff9f7;
}

.purchase-cta div {
  display: grid;
  gap: 4px;
}

.purchase-cta span {
  color: var(--muted);
}

.application-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 36px;
  align-items: center;
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
  padding: 64px 0 36px;
}

.application-hero h1 {
  margin: 12px 0 16px;
  color: #10213b;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.2;
}

.application-hero p {
  color: var(--muted);
  line-height: 1.8;
}

.application-price {
  display: grid;
  gap: 7px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: var(--shadow);
}

.application-price strong {
  color: #10213b;
  font-size: 38px;
}

.application-content {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 18px;
  padding-top: 24px;
}

.application-main,
.application-notes {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.application-main h2,
.application-notes h2 {
  margin-top: 0;
  font-size: 21px;
}

.application-main > p,
.application-notes p,
.application-notes li {
  color: var(--muted);
  line-height: 1.75;
}

.application-fields {
  display: grid;
  margin: 20px 0;
  border-top: 1px solid var(--line);
}

.application-fields div {
  display: grid;
  grid-template-columns: 38px 1fr;
  border-bottom: 1px solid var(--line);
  padding: 11px 0;
}

.application-fields dt {
  color: var(--teal);
  font-weight: 900;
}

.application-fields dd {
  margin: 0;
}

.application-fallback {
  font-size: 13px;
}

.application-fallback span {
  color: var(--amber);
  font-weight: 900;
}

.site-foot {
  border-top: 1px solid var(--line);
  background: #fff;
}

.site-foot-inner {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: space-between;
  padding: 22px 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 980px) {
  .public-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .public-nav {
    justify-content: flex-start;
  }

  .product-hero,
  .feature-grid,
  .policy-grid,
  .flow-list,
  .price-card,
  .purchase-flow,
  .application-hero,
  .application-content {
    grid-template-columns: 1fr;
  }

  .product-hero {
    min-height: auto;
  }

  .price-main {
    justify-items: start;
  }
}

@media (max-width: 700px) {
  .public-header {
    gap: 12px;
  }

  .public-nav a {
    min-height: 34px;
    padding: 7px 8px;
    font-size: 13px;
  }

  .product-hero {
    width: min(100% - 24px, 1180px);
    padding: 32px 0 44px;
  }

  .hero-summary {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: 42px;
  }

  .hero-actions a {
    width: 100%;
  }

  .purchase-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .product-section {
    width: min(100% - 24px, 1080px);
    padding: 38px 0;
  }

  .flow-section {
    width: 100%;
    padding-left: 12px;
    padding-right: 12px;
  }

  .price-details div,
  .company-info div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}