/* SpoolForge 公式サイト 共通スタイル */

:root {
  --bg: #f5f7fb;
  --bg-alt: #eaeef6;
  --card-bg: #ffffff;
  --ink: #10203d;
  --ink-soft: #44536e;
  --ink-faint: #7c88a0;
  --line: #dbe2ee;
  --accent: #1f3a68;
  --accent-dark: #14294c;
  --accent-soft: #dde6f4;
  --accent-ink: #ffffff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow: 0 12px 32px -18px rgba(16, 32, 61, 0.35);
  --maxw: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", "Meiryo", sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", "Meiryo", sans-serif;
  font-weight: 800;
  line-height: 1.4;
  margin: 0 0 0.6em;
  letter-spacing: 0.01em;
  word-break: keep-all;
  overflow-wrap: break-word;
}

p {
  margin: 0 0 1.1em;
  color: var(--ink-soft);
  overflow-wrap: break-word;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

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

/* ---------- ヘッダー ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
/* 備考: backdrop-filterはposition:fixedの子要素(モバイルナビ)の containing block を
   ヘッダー自身に変えてしまい、パネルが画面全体に広がらなくなる副作用があるため使わない。 */

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  height: 26px;
  width: auto;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  flex: none;
}

.brand-mark img {
  height: 20px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.main-nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--ink);
  font-weight: 700;
  font-size: 0.94rem;
}

.main-nav a:hover {
  color: var(--accent-dark);
  text-decoration: none;
}

.nav-toggle {
  display: none;
}

/* ---------- ボタン ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--accent-dark);
  color: var(--accent-dark);
  text-decoration: none;
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.85rem;
}

/* ---------- ヒーロー ---------- */

.hero {
  padding: 104px 0 92px;
  text-align: center;
  background-image:
    linear-gradient(90deg, rgba(7, 16, 31, 0.94) 0%, rgba(10, 28, 53, 0.78) 48%, rgba(10, 28, 53, 0.46) 100%),
    url("../images/hero-manufacturing-logistics-v1.webp");
  background-size: cover;
  background-position: center 56%;
  border-bottom: 1px solid var(--line);
}

.hero .logo-hero {
  height: 64px;
  width: auto;
  margin: 0 auto 28px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
}

.hero .lead {
  width: 100%;
  max-width: none;
  margin: 0 0 34px;
  font-size: 1.08rem;
  color: #d7e1ef;
}

.hero h1 {
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35);
}

.hero .btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.8);
  background: rgba(7, 16, 31, 0.28);
}

.hero .btn-outline:hover {
  color: #fff;
  border-color: #fff;
  background: rgba(7, 16, 31, 0.55);
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- セクション共通 ---------- */

section {
  padding: 64px 0;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  width: 100%;
  max-width: none;
  margin: 0 0 42px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}

/* 見出しは中央に置いたまま、説明文は中央のコンテンツ幅の左端に揃える。 */
.section-head p,
.page-head .lead,
.hero .lead,
.card p,
.steps p,
.notice p,
.callout p,
.legal-copy p,
.legal-copy li {
  text-align: left;
}

.page-head {
  padding: 68px 0 62px;
  text-align: center;
  background-image:
    linear-gradient(90deg, rgba(7, 16, 31, 0.94) 0%, rgba(10, 28, 53, 0.79) 50%, rgba(10, 28, 53, 0.48) 100%),
    url("../images/hero-manufacturing-logistics-v1.webp");
  background-size: cover;
  background-position: center 54%;
  border-bottom: 1px solid var(--line);
}

.page-head .eyebrow {
  margin-bottom: 18px;
}

.page-head h1 {
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  color: #fff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.42);
}

.page-head .lead {
  width: 100%;
  max-width: none;
  margin: 0;
  color: #d7e1ef;
}

.page-head .eyebrow,
.hero .eyebrow {
  color: #e6eef9;
  background: rgba(31, 58, 104, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

@media (max-width: 700px) {
  .hero {
    padding: 76px 0 68px;
    background-position: 62% center;
  }

  .page-head {
    padding: 56px 0 50px;
    background-position: 62% center;
  }
}

/* ---------- グリッド／カード ---------- */

.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 860px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  text-align: left;
}

.card h3 {
  font-size: 1.12rem;
  margin-bottom: 0.5em;
}

.card p:last-child {
  margin-bottom: 0;
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 1.35rem;
  margin-bottom: 16px;
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-card .product-tag {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  text-transform: uppercase;
}

.product-card h3 {
  margin-bottom: 0.2em;
  font-size: 1.3rem;
}

.product-card .product-tag.tag-soon {
  color: var(--ink-faint);
}

.product-card .btn {
  margin-top: auto;
}

/* ---------- サブナビ（製品クラスタ内のページ切り替え） ---------- */

.subnav {
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
}

.subnav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 14px 0;
}

.subnav-list a {
  display: inline-block;
  padding: 7px 16px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 700;
}

.subnav-list a:hover {
  text-decoration: none;
  color: var(--accent-dark);
}

.subnav-list a[aria-current="page"] {
  background: var(--accent);
  color: #fff;
}

/* ---------- 言語切り替え ---------- */

.lang-switch {
  position: relative;
}

.lang-switch summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.85rem;
  font-weight: 700;
}

.lang-switch summary::-webkit-details-marker {
  display: none;
}

.lang-switch[open] summary {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.lang-switch-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  padding: 8px;
  min-width: 168px;
  z-index: 60;
}

.lang-switch-menu button {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
}

.lang-switch-menu button:hover {
  background: var(--bg-alt);
}

.lang-switch-menu button[disabled] {
  cursor: default;
  color: var(--ink-faint);
}

.lang-switch-menu button[disabled]:hover {
  background: none;
}

.lang-switch-menu small {
  color: var(--ink-faint);
  font-weight: 400;
}

.lang-switch-menu .lang-current {
  color: var(--accent-dark);
}

/* ---------- ボリュームライセンス ---------- */

.volume-table td.price-cell,
.volume-table th.price-cell {
  text-align: center;
}

.volume-table .volume-price {
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-dark);
}

.volume-table .volume-note {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-faint);
  font-weight: 400;
  margin-top: 2px;
}

/* ---------- 製品スクリーンショット ---------- */

figure.screenshot {
  margin: 0;
}

figure.screenshot img {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

figure.screenshot figcaption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--ink-faint);
  text-align: left;
}

/* ---------- 表 ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 10px;
  color: var(--ink-faint);
  font-size: 0.85rem;
}

th, td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  background: var(--bg-alt);
  font-family: inherit;
  font-size: 0.95rem;
}

tbody tr:last-child td {
  border-bottom: none;
}

.table-wrap {
  overflow-x: auto;
  margin-bottom: 1.5em;
}

/* ---------- 価格プラン ---------- */

.plan {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.plan.plan-featured {
  border-color: var(--accent);
  position: relative;
}

.plan-featured::before {
  content: "個人事業者・小規模現場向け";
  position: absolute;
  top: -14px;
  left: 30px;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
}

.plan h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.plan .price {
  font-size: 2.1rem;
  font-weight: 800;
  font-family: inherit;
  color: var(--accent-dark);
  margin: 10px 0 4px;
}

.plan .price small {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-faint);
}

.plan ul {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  flex: 1;
}

.plan ul li {
  padding: 8px 0 8px 26px;
  position: relative;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.plan ul li:first-child {
  border-top: none;
}

.plan ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-dark);
  font-weight: 700;
}

/* ---------- タイムライン／ステップ ---------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 18px;
}

.steps li {
  counter-increment: step;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 24px 20px 62px;
  position: relative;
  text-align: left;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps h4 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.steps p {
  margin: 0;
}

/* ---------- お知らせ／ノート ---------- */

.notice {
  background: var(--accent-soft);
  border: 1px solid #ecc6a4;
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 0 0 1.5em;
  text-align: left;
}

.notice p:last-child {
  margin-bottom: 0;
}

.notice-title {
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 6px;
  display: block;
}

.inquiry-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
  max-width: 900px;
  margin: 0 auto;
}

.inquiry-form-card {
  max-width: 920px;
  padding: 30px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.required,
.optional {
  display: inline-block;
  margin-left: 5px;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: .7rem;
  vertical-align: .1em;
}

.required {
  color: #fff;
  background: #9d2f2f;
}

.optional {
  color: var(--ink-soft);
  background: var(--bg-alt);
}

.form-trap {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

.form-action-center {
  text-align: center;
}

.form-status {
  max-width: 920px;
  margin: 0 auto 24px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-weight: 700;
}

.form-status.is-success {
  color: #155724;
  background: #dff3e4;
  border: 1px solid #a8d7b2;
}

.form-status.is-error {
  color: #842029;
  background: #f8d7da;
  border: 1px solid #e5aeb3;
}

.inquiry-form label {
  display: block;
  font-weight: 700;
  color: var(--ink);
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  margin-top: 7px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--ink);
  font: inherit;
  font-weight: 400;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  outline: 3px solid rgba(36, 99, 168, .2);
  border-color: var(--accent);
}

.inquiry-form .form-wide {
  grid-column: 1 / -1;
}

.inquiry-form .form-consent {
  display: block;
  font-weight: 400;
}

.inquiry-form .form-consent input {
  width: auto;
  margin-right: 6px;
}

@media (max-width: 700px) {
  .inquiry-form {
    grid-template-columns: 1fr;
  }

  .inquiry-form .form-wide {
    grid-column: auto;
  }
}

.callout {
  background: var(--ink);
  color: #f4ede1;
  border-radius: var(--radius-lg);
  padding: 46px 42px;
  text-align: center;
}

.callout h2 {
  color: #fff;
  margin-bottom: 10px;
}

.callout p {
  color: #cfc6b8;
  width: 100%;
  max-width: none;
  margin: 0 0 26px;
}

.callout .btn-outline {
  border-color: #cfc6b8;
  color: #fff;
}

.callout .btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- フッター ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
  background: var(--bg-alt);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.footer-brand img {
  height: 22px;
  margin-bottom: 10px;
}

.footer-brand p {
  max-width: 34ch;
  font-size: 0.9rem;
  margin: 0;
}

.footer-cols {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-col a {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--ink-faint);
}

.footer-bottom a {
  color: var(--ink-faint);
}

/* ---------- レスポンシブ：ナビ ---------- */

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    top: 76px;
    right: 0;
    bottom: 0;
    left: 0;
    background: var(--bg);
    padding: 28px 24px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
    overflow-y: auto;
  }

  .main-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }

  .main-nav a {
    font-size: 1.05rem;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: var(--card-bg);
    cursor: pointer;
  }

  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after {
    content: "";
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
    position: relative;
    transition: transform 0.18s ease, opacity 0.18s ease;
  }

  .nav-toggle span::before {
    position: absolute;
    top: -6px;
  }

  .nav-toggle span::after {
    position: absolute;
    top: 6px;
  }

  #nav-check:checked ~ .main-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  #nav-check:checked ~ .nav-toggle span {
    background: transparent;
  }

  #nav-check:checked ~ .nav-toggle span::before {
    transform: translateY(6px) rotate(45deg);
  }

  #nav-check:checked ~ .nav-toggle span::after {
    transform: translateY(-6px) rotate(-45deg);
  }

  .footer-top {
    flex-direction: column;
  }
}

/* ---------- ダークモード（OS設定追従） ---------- */

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #101a2e;
    --card-bg: #131f36;
    --ink: #eef2fb;
    --ink-soft: #b7c2d9;
    --ink-faint: #7c88a0;
    --line: #253253;
    --accent: #4d7fd6;
    --accent-dark: #7ea3e6;
    --accent-soft: #1c2c4d;
    --shadow: 0 12px 32px -18px rgba(0, 0, 0, 0.6);
  }

  .site-header {
    background: rgba(11, 18, 32, 0.92);
  }

  .callout {
    background: #070c16;
  }
}