/* NAKATOMI BCF-60L(N) — PDF準拠カタログ */
:root {
  --blue: #005bac;
  --blue-deep: #00479d;
  --blue-title: #0062af;
  --teal: #0097a7;
  --teal-dark: #007a82;
  --line: #7eb8d8;
  --table-bg: #dceaf7;
  --table-border: #b8d4e8;
  --panel-border: #9ec5e0;
  --text: #1a1a1a;
  --muted: #333;
  --logo-red: #d30000;
  --max: 1100px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    "Yu Gothic", YuGothic, Meiryo, sans-serif;
  color: var(--text);
  background: #e4e8ec;
  line-height: 1.5;
}

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

ul {
  list-style: none;
}

.catalog {
  max-width: var(--max);
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 0 28px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

/* ========== ヘッダー ========== */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: stretch;
  min-height: 380px;
  position: relative;
}

.hero__left {
  padding: 1.35rem 1.5rem 1rem 1.6rem;
  position: relative;
  z-index: 2;
  background: linear-gradient(
    90deg,
    #fff 0%,
    #fff 70%,
    rgba(255, 255, 255, 0.55) 100%
  );
}

.hero__logo {
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 900;
  font-style: italic;
  color: var(--logo-red);
  letter-spacing: 0.02em;
  line-height: 1;
}

.hero__logo::after {
  content: "";
  display: block;
  width: 6rem;
  height: 4px;
  margin-top: 0.12rem;
  background: var(--logo-red);
  border-radius: 1px;
  transform: skewX(-12deg);
}

.hero__category {
  margin-top: 0.9rem;
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero__model {
  margin-top: 0.05rem;
  font-size: clamp(2.2rem, 5.5vw, 3.15rem);
  font-weight: 900;
  color: var(--blue);
  letter-spacing: 0.01em;
  line-height: 1.05;
}

.hero__model-n {
  font-size: 0.42em;
  font-weight: 700;
  margin-left: 0.15em;
  vertical-align: 0.15em;
}

.hero__tagline {
  margin-top: 0.4rem;
  font-size: clamp(0.88rem, 2vw, 1.02rem);
  font-weight: 700;
  color: var(--blue-title);
  line-height: 1.45;
}

.hero__desc {
  margin-top: 0.7rem;
  font-size: clamp(0.78rem, 1.7vw, 0.88rem);
  font-weight: 500;
  line-height: 1.8;
  color: var(--muted);
}

.hero__badges {
  margin-top: 1rem;
  width: min(100%, 300px);
}

.hero__right {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0.5rem 0.75rem 0;
  background: #fff;
  overflow: hidden;
}

.hero__product {
  position: relative;
  z-index: 2;
  width: min(100%, 340px);
}

/* ========== セクションタイトル（斜めタブ） ========== */
.sec-title {
  display: inline-block;
  position: relative;
  margin: 0 0 0.7rem;
  padding: 0.32rem 1.6rem 0.32rem 1.1rem;
  background: var(--blue-deep);
  color: #fff;
  font-size: clamp(0.9rem, 2vw, 1.02rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.35;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 100%, 0 100%);
}

.sec-title::after {
  content: "";
  position: absolute;
  left: 0;
  right: calc(-100vw + 100%);
  bottom: 0;
  height: 2px;
  background: var(--blue-deep);
  z-index: -1;
}

.panel {
  position: relative;
  min-width: 0;
}

/* ========== 中段：特長 ＋ 使用シーン ========== */
.row-mid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 0.9rem 1.1rem;
  padding: 0.4rem 1.1rem 0.75rem;
  align-items: start;
}

.panel--features {
  border: 2px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.75rem 0.85rem 0.5rem;
}

.feature-list__item {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0.55rem;
  align-items: center;
  padding: 0.55rem 0;
  border-bottom: 1px solid #d6e6f2;
}

.feature-list__item:last-child {
  border-bottom: none;
}

.feature-list__icon {
  width: 58px;
  height: 58px;
  border-radius: 6px;
  object-fit: cover;
}

.feature-list__heading {
  font-size: clamp(0.8rem, 1.8vw, 0.9rem);
  font-weight: 700;
  color: var(--blue-title);
  line-height: 1.3;
}

.feature-list__text {
  margin-top: 0.15rem;
  font-size: clamp(0.7rem, 1.5vw, 0.78rem);
  color: var(--muted);
  line-height: 1.5;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem 0.45rem;
}

.scene-grid li {
  text-align: center;
}

.scene-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 6px;
}

.scene-grid span {
  display: block;
  margin-top: 0.22rem;
  font-size: clamp(0.72rem, 1.5vw, 0.82rem);
  font-weight: 700;
  color: var(--blue-title);
  letter-spacing: 0.12em;
}

/* ========== 下段：安全 ＋ 仕様 ＋ 図面 ========== */
.row-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr 0.95fr;
  gap: 0.75rem 0.85rem;
  padding: 0.25rem 1.1rem 0.85rem;
  align-items: start;
}

.safety-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0.45rem;
  align-items: start;
  padding: 0.42rem 0;
  border-bottom: 1px solid #d6e6f2;
}

.safety-list li:last-child {
  border-bottom: none;
}

.safety-list img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
}

.safety-list h3 {
  font-size: clamp(0.74rem, 1.6vw, 0.82rem);
  font-weight: 700;
  color: var(--blue-title);
  line-height: 1.3;
}

.safety-list p {
  margin-top: 0.1rem;
  font-size: clamp(0.66rem, 1.4vw, 0.72rem);
  color: var(--muted);
  line-height: 1.45;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: clamp(0.66rem, 1.4vw, 0.74rem);
}

.specs-table th,
.specs-table td {
  border: 1px solid var(--table-border);
  padding: 0.36rem 0.4rem;
  vertical-align: middle;
  line-height: 1.35;
}

.specs-table th {
  width: 36%;
  background: var(--table-bg);
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.specs-table td {
  text-align: center;
  font-weight: 500;
  background: #fff;
}

.specs-table tr:nth-child(even) td {
  background: #f4f9fc;
}

.panel--diagram {
  padding-top: 0.15rem;
}

.diagram__img {
  width: 100%;
  margin-bottom: 0.5rem;
}

.diagram__title {
  font-size: clamp(0.78rem, 1.7vw, 0.88rem);
  font-weight: 700;
  color: var(--blue-title);
  padding-bottom: 0.2rem;
  border-bottom: 2px solid var(--blue-title);
  margin-bottom: 0.4rem;
}

.diagram__text {
  font-size: clamp(0.66rem, 1.4vw, 0.72rem);
  line-height: 1.6;
  color: var(--muted);
}

.diagram__note {
  margin-top: 0.3rem;
  font-size: clamp(0.6rem, 1.3vw, 0.66rem);
  color: #555;
  line-height: 1.5;
}

/* ========== フッター ========== */
.catalog-footer {
  padding: 0.15rem 1.1rem 1.1rem;
}

.footer-row {
  display: grid;
  grid-template-columns: 1.15fr 2fr;
  gap: 0.5rem;
  align-items: stretch;
}

.footer-banner {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
  min-height: 88px;
}

.highlight-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}

.highlight-cards li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.4rem;
  border: 2px solid var(--teal);
  border-radius: 8px;
  background: #fff;
}

.highlight-cards img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
}

.highlight-cards__tank {
  width: 40px !important;
  height: auto !important;
}

.highlight-cards p {
  font-size: clamp(0.58rem, 1.25vw, 0.68rem);
  font-weight: 700;
  color: var(--teal-dark);
  line-height: 1.4;
}

.highlight-cards span {
  display: block;
  font-size: clamp(0.64rem, 1.35vw, 0.74rem);
  margin-bottom: 0.05rem;
}

.disclaimer {
  margin-top: 0.55rem;
  text-align: right;
  font-size: clamp(0.6rem, 1.3vw, 0.68rem);
  color: #666;
}

/* ========== レスポンシブ ========== */
@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__left {
    background: #fff;
    text-align: center;
    padding-bottom: 0.5rem;
  }

  .hero__logo::after {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__badges {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__right {
    min-height: 280px;
    order: -1;
  }

  .hero__product {
    width: min(58%, 280px);
  }

  .row-mid {
    grid-template-columns: 1fr;
  }

  .row-bottom {
    grid-template-columns: 1fr;
  }

  .footer-row {
    grid-template-columns: 1fr;
  }

  .highlight-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .hero__left {
    padding: 1rem 1rem 0.75rem;
  }

  .row-mid,
  .row-bottom,
  .catalog-footer {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .feature-list__item {
    grid-template-columns: 48px 1fr;
  }

  .feature-list__icon {
    width: 48px;
    height: 48px;
  }

  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .specs-table th {
    letter-spacing: 0.04em;
  }

  .highlight-cards li {
    flex-direction: column;
    text-align: center;
    padding: 0.55rem 0.35rem;
  }

  .disclaimer {
    text-align: left;
  }
}

@media (max-width: 400px) {
  .scene-grid {
    grid-template-columns: 1fr;
  }

  .highlight-cards {
    grid-template-columns: 1fr;
  }
}