@charset "UTF-8";

/* =========================================================
   Zoho Vault 解説サイト 共通スタイル
   テーマ: 落ち着いたビジネスブルー / Noto Sans JP
   ========================================================= */

:root {
  --navy-900: #0b2545;
  --navy-800: #12365c;
  --navy-700: #1b4a75;
  --blue-600: #1565c0;
  --blue-500: #1f76d2;
  --blue-400: #4a90d9;
  --blue-100: #dce9f8;
  --blue-050: #f2f7fd;
  --ink: #1f2b3a;
  --ink-sub: #55647a;
  --line: #d8e3f0;
  --bg: #f6f9fc;
  --white: #ffffff;
  --warn-bg: #fff8e6;
  --warn-line: #e8c86a;
  --ok-bg: #eef7f0;
  --ok-line: #86bf95;
  --danger-bg: #fdf0ef;
  --danger-line: #dda29c;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(11, 37, 69, .06), 0 2px 8px rgba(11, 37, 69, .05);
  --shadow-md: 0 2px 6px rgba(11, 37, 69, .08), 0 10px 24px rgba(11, 37, 69, .07);
  --maxw: 1080px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
               "Yu Gothic", Meiryo, sans-serif;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.95;
  font-size: 16px;
  letter-spacing: .015em;
}

img, svg { max-width: 100%; height: auto; }

a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- ヘッダー / ナビゲーション ---------- */

.site-header {
  background: var(--navy-900);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(11, 37, 69, .25);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .02em;
  line-height: 1.4;
}
.brand:hover { text-decoration: none; opacity: .9; }
.brand .mark {
  width: 30px; height: 30px;
  flex: 0 0 30px;
  border-radius: 7px;
  background: linear-gradient(140deg, var(--blue-400), var(--blue-600));
  display: grid; place-items: center;
}
.brand .mark svg { width: 17px; height: 17px; display: block; }
.brand small {
  display: block;
  font-size: .68rem;
  font-weight: 400;
  color: #a9c4e2;
  letter-spacing: .04em;
  line-height: 1.3;
}

.site-nav { margin-left: auto; }
.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin: 0;
  padding: 0;
}
.site-nav a {
  display: block;
  color: #cddff0;
  font-size: .86rem;
  padding: 7px 11px;
  border-radius: 6px;
  white-space: nowrap;
  transition: background .15s, color .15s;
}
.site-nav a:hover { background: rgba(255,255,255,.1); color: #fff; text-decoration: none; }
.site-nav a[aria-current="page"] {
  background: var(--blue-600);
  color: #fff;
  font-weight: 500;
}
.site-nav .num {
  display: inline-block;
  font-size: .72rem;
  color: #7fa6cd;
  margin-right: 4px;
}
.site-nav a[aria-current="page"] .num { color: #cfe3fa; }

/* ---------- ヒーロー ---------- */

.hero {
  background: linear-gradient(160deg, var(--navy-800) 0%, var(--navy-900) 55%, #081c34 100%);
  color: #fff;
  padding: 54px 20px 58px;
  border-bottom: 4px solid var(--blue-600);
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; }
.hero .eyebrow {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .16em;
  color: #8fb8e2;
  border: 1px solid rgba(143, 184, 226, .45);
  border-radius: 999px;
  padding: 3px 14px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(1.6rem, 4.2vw, 2.5rem);
  line-height: 1.5;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: .01em;
}
.hero p {
  margin: 0;
  max-width: 760px;
  color: #d3e2f2;
  font-size: 1.02rem;
  line-height: 2.05;
}

/* ---------- レイアウト ---------- */

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

main { padding: 44px 0 64px; }

.breadcrumb {
  font-size: .82rem;
  color: var(--ink-sub);
  padding: 14px 0 0;
}
.breadcrumb a { color: var(--ink-sub); }
.breadcrumb span { margin: 0 6px; color: #a9b6c6; }

section.block {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 38px 38px;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
}

/* ---------- 見出し ---------- */

h2 {
  font-size: 1.42rem;
  line-height: 1.6;
  font-weight: 700;
  color: var(--navy-900);
  margin: 0 0 22px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--blue-100);
  position: relative;
  letter-spacing: .01em;
}
h2::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 76px; height: 2px;
  background: var(--blue-600);
}

h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--navy-800);
  margin: 34px 0 14px;
  padding-left: 13px;
  border-left: 4px solid var(--blue-500);
  line-height: 1.7;
}

h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy-800);
  margin: 24px 0 10px;
}

p { margin: 0 0 17px; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 700; color: var(--navy-800); }

.lead {
  font-size: 1.04rem;
  color: var(--ink-sub);
  line-height: 2.1;
  margin-bottom: 26px;
}

/* ---------- リスト ---------- */

ul.list, ol.list {
  margin: 0 0 18px;
  padding-left: 1.4em;
}
ul.list li, ol.list li { margin-bottom: 9px; }
ul.list li::marker { color: var(--blue-500); }
ol.list li::marker { color: var(--blue-600); font-weight: 700; }

ul.check { list-style: none; margin: 0 0 18px; padding: 0; }
ul.check li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 11px;
}
ul.check li::before {
  content: "";
  position: absolute;
  left: 4px; top: .62em;
  width: 12px; height: 7px;
  border-left: 2.4px solid var(--blue-600);
  border-bottom: 2.4px solid var(--blue-600);
  transform: rotate(-45deg);
}

/* ---------- カード ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
  margin: 22px 0;
}
.card {
  background: var(--blue-050);
  border: 1px solid var(--blue-100);
  border-radius: 8px;
  padding: 20px 22px;
}
.card h4 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--navy-900);
  display: flex;
  align-items: center;
  gap: 9px;
}
.card .badge {
  flex: 0 0 26px;
  width: 26px; height: 26px;
  border-radius: 6px;
  background: var(--blue-600);
  color: #fff;
  display: grid; place-items: center;
  font-size: .8rem;
  font-weight: 700;
}
.card p { font-size: .92rem; line-height: 1.9; color: var(--ink-sub); margin: 0; }

/* ---------- 注記ボックス ---------- */

.note {
  border-radius: 8px;
  padding: 18px 22px;
  margin: 22px 0;
  font-size: .94rem;
  line-height: 1.95;
  border-left: 4px solid var(--blue-500);
  background: var(--blue-050);
}
.note .note-title {
  display: block;
  font-weight: 700;
  color: var(--navy-800);
  margin-bottom: 6px;
  font-size: .95rem;
}
.note p { margin-bottom: 10px; }
.note ul { margin: 8px 0 0; padding-left: 1.3em; }
.note li { margin-bottom: 7px; }

.note.warn { background: var(--warn-bg); border-left-color: var(--warn-line); }
.note.ok { background: var(--ok-bg); border-left-color: var(--ok-line); }
.note.danger { background: var(--danger-bg); border-left-color: var(--danger-line); }

/* ---------- 用語解説 ---------- */

.term {
  background: #fbfcfe;
  border: 1px dashed var(--blue-100);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: .92rem;
  line-height: 1.9;
  color: var(--ink-sub);
}
.term b {
  display: inline-block;
  background: var(--navy-800);
  color: #fff;
  font-size: .74rem;
  font-weight: 500;
  padding: 1px 9px;
  border-radius: 4px;
  margin-right: 9px;
  letter-spacing: .05em;
  vertical-align: 2px;
}

/* ---------- テーブル ---------- */

.table-scroll {
  overflow-x: auto;
  margin: 22px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  -webkit-overflow-scrolling: touch;
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 560px;
  font-size: .92rem;
  background: #fff;
}
th, td {
  border-bottom: 1px solid var(--line);
  padding: 12px 15px;
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}
thead th {
  background: var(--navy-800);
  color: #fff;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: none;
}
tbody tr:nth-child(even) { background: #fafcfe; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: none; }
tbody th {
  background: var(--blue-050);
  font-weight: 700;
  color: var(--navy-800);
  white-space: nowrap;
}
td.c, th.c { text-align: center; }
.yes { color: #17794a; font-weight: 700; }
.no { color: #b0bcc9; }

/* ---------- 図解 ---------- */

figure.diagram {
  margin: 28px 0;
  padding: 24px 20px 18px;
  background: #fbfdff;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-align: center;
}
figure.diagram .svg-scroll { overflow-x: auto; }
figure.diagram svg { display: block; margin: 0 auto; height: auto; }
figure.diagram figcaption {
  margin-top: 16px;
  font-size: .84rem;
  color: var(--ink-sub);
  line-height: 1.8;
  text-align: center;
}

/* ---------- ステップ ---------- */

ol.steps { list-style: none; counter-reset: st; margin: 24px 0; padding: 0; }
ol.steps > li {
  counter-increment: st;
  position: relative;
  padding: 0 0 26px 56px;
  border-left: 2px solid var(--blue-100);
  margin-left: 17px;
}
ol.steps > li:last-child { border-left-color: transparent; padding-bottom: 4px; }
ol.steps > li::before {
  content: counter(st);
  position: absolute;
  left: -18px; top: -2px;
  width: 35px; height: 35px;
  border-radius: 50%;
  background: var(--blue-600);
  color: #fff;
  font-weight: 700;
  font-size: .92rem;
  display: grid; place-items: center;
  box-shadow: 0 0 0 4px #fff;
}
ol.steps > li h4 { margin: 4px 0 8px; }
ol.steps > li p { font-size: .94rem; color: var(--ink-sub); }

/* ---------- FAQ ---------- */

.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 14px;
  overflow: hidden;
  background: #fff;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 17px 52px 17px 56px;
  position: relative;
  font-weight: 700;
  color: var(--navy-800);
  background: var(--blue-050);
  line-height: 1.75;
  font-size: .98rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "Q";
  position: absolute;
  left: 18px; top: 16px;
  width: 26px; height: 26px;
  border-radius: 5px;
  background: var(--blue-600);
  color: #fff;
  display: grid; place-items: center;
  font-size: .82rem;
}
.faq-item summary::after {
  content: "";
  position: absolute;
  right: 22px; top: 25px;
  width: 9px; height: 9px;
  border-right: 2px solid var(--blue-600);
  border-bottom: 2px solid var(--blue-600);
  transform: rotate(45deg);
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item .faq-body {
  padding: 20px 24px 22px 56px;
  font-size: .95rem;
  line-height: 2;
  position: relative;
  border-top: 1px solid var(--line);
}
.faq-item .faq-body::before {
  content: "A";
  position: absolute;
  left: 18px; top: 20px;
  width: 26px; height: 26px;
  border-radius: 5px;
  background: var(--navy-800);
  color: #fff;
  display: grid; place-items: center;
  font-size: .82rem;
  font-weight: 700;
}

/* ---------- ページ内目次 ---------- */

.toc {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue-600);
  border-radius: 8px;
  padding: 22px 26px;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
}
.toc h2 {
  font-size: .95rem;
  border: none;
  padding: 0;
  margin: 0 0 12px;
  color: var(--navy-900);
}
.toc h2::after { display: none; }
.toc ol { margin: 0; padding-left: 1.35em; font-size: .93rem; }
.toc li { margin-bottom: 7px; }

/* ---------- 次ページ導線 ---------- */

.pager {
  display: flex;
  gap: 16px;
  margin-top: 34px;
  flex-wrap: wrap;
}
.pager a {
  flex: 1 1 240px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition: border-color .15s, box-shadow .15s;
}
.pager a:hover {
  text-decoration: none;
  border-color: var(--blue-400);
  box-shadow: var(--shadow-md);
}
.pager .dir { display: block; font-size: .76rem; color: var(--ink-sub); margin-bottom: 5px; letter-spacing: .08em; }
.pager .ttl { display: block; font-weight: 700; color: var(--navy-800); font-size: 1rem; }
.pager a.next { text-align: right; }

/* ---------- CTA ---------- */

.cta {
  background: linear-gradient(140deg, var(--navy-800), var(--navy-900));
  color: #fff;
  border-radius: 10px;
  padding: 34px 38px;
  margin-top: 30px;
}
.cta h2 { color: #fff; border-bottom-color: rgba(255,255,255,.2); }
.cta h2::after { background: var(--blue-400); }
.cta p { color: #cfe0f2; font-size: .96rem; }
.btn {
  display: inline-block;
  background: var(--blue-600);
  color: #fff;
  font-weight: 700;
  padding: 13px 30px;
  border-radius: 7px;
  margin-top: 10px;
  font-size: .96rem;
  transition: background .15s;
}
.btn:hover { background: var(--blue-500); text-decoration: none; }

/* ---------- 索引カード（トップ） ---------- */

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
  gap: 18px;
  margin: 24px 0 0;
}
.index-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 22px 24px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.index-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-400);
}
.index-card .no {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--blue-600);
  font-weight: 700;
  margin-bottom: 7px;
}
.index-card h3 {
  margin: 0 0 9px;
  padding: 0;
  border: none;
  font-size: 1.08rem;
  color: var(--navy-900);
}
.index-card p { font-size: .89rem; color: var(--ink-sub); line-height: 1.85; margin: 0; }

/* ---------- 統計 ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin: 22px 0;
}
.stat {
  background: var(--blue-050);
  border: 1px solid var(--blue-100);
  border-radius: 8px;
  padding: 18px 16px;
  text-align: center;
}
.stat .v {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-600);
  line-height: 1.4;
}
.stat .l { display: block; font-size: .82rem; color: var(--ink-sub); margin-top: 4px; line-height: 1.7; }

/* ---------- フッター ---------- */

.site-footer {
  background: var(--navy-900);
  color: #9fbcda;
  padding: 40px 20px 34px;
  font-size: .86rem;
  line-height: 1.9;
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  padding: 0;
  margin: 0 0 22px;
}
.footer-nav a { color: #cddff0; font-size: .87rem; }
.site-footer .disclaimer {
  border-top: 1px solid rgba(159, 188, 218, .22);
  padding-top: 18px;
  font-size: .8rem;
  color: #7fa0c0;
  line-height: 1.85;
}
.site-footer .disclaimer a { color: #a9c4e2; }

/* ---------- レスポンシブ ---------- */

@media (max-width: 900px) {
  .header-inner { padding: 12px 16px; }
  .site-nav { margin-left: 0; width: 100%; overflow-x: auto; }
  .site-nav ul { flex-wrap: nowrap; padding-bottom: 2px; }
  .site-nav a { font-size: .82rem; padding: 6px 9px; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; line-height: 1.9; }
  .hero { padding: 38px 16px 42px; }
  .wrap { padding: 0 16px; }
  section.block { padding: 24px 20px 28px; border-radius: 8px; }
  h2 { font-size: 1.22rem; }
  h3 { font-size: 1.04rem; }
  .cta { padding: 26px 22px; }
  .faq-item summary { padding: 15px 42px 15px 50px; font-size: .94rem; }
  .faq-item .faq-body { padding: 17px 20px 19px 50px; }
  ol.steps > li { padding-left: 46px; }
}

@media print {
  .site-header, .pager, .cta, .site-footer { display: none; }
  section.block { box-shadow: none; page-break-inside: avoid; }
}