/* ============================================================
   n0d4 TSM Handbook — 記事共通CSS (article pages)
   build.py extract-css により自動抽出
   全記事ページ(growth-pm/communication/pricing/marketing)で共通
   ============================================================ */
/* ============================================================
   RESET / BASE
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px;overflow-x:hidden}
body{font-family:var(--font-sans);
  background:var(--n0d4-bg);
  color:var(--n0d4-text);line-height:1.75;font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
/* ============================================================
   HEADER
   ============================================================ */
.header{position:fixed;top:0;left:0;right:0;height:var(--header-height);
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--n0d4-border);
  display:flex;align-items:center;padding:0 24px;z-index:100;gap:12px}
.header-logo{font-weight:900;font-size:15px;letter-spacing:.12em;
  color:var(--n0d4-accent);text-decoration:none;white-space:nowrap}
.header-logo:hover{color:var(--n0d4-text)}
.header-title{font-size:13px;color:var(--n0d4-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.menu-toggle{display:none;background:0 0;border:1px solid var(--n0d4-border);color:var(--n0d4-text);font-size:22px;cursor:pointer;padding:4px 12px;border-radius:var(--card-radius);line-height:1}
.menu-toggle:hover{background:var(--n0d4-border)}
/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar{position:fixed;top:var(--header-height);left:0;width:var(--sidebar-width);bottom:0;
  background:var(--n0d4-surface);border-right:1px solid var(--n0d4-border);
  overflow-y:auto;padding:16px 0;z-index:99;
  scrollbar-width:thin;scrollbar-color:var(--n0d4-border) transparent}
.sidebar-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;z-index:98;
  background:rgba(0,0,0,.5);
  opacity:0;pointer-events:none}
.sidebar.open ~ .sidebar-backdrop,
.sidebar-backdrop.open{opacity:1;pointer-events:auto}
.sidebar-section-title{display:block;padding:7px 20px 7px 16px;font-size:11.5px;font-weight:700;letter-spacing:.08em;
  color:var(--n0d4-accent);text-transform:uppercase;border-left:2px solid var(--n0d4-accent)}
.sidebar-close:hover{background:var(--n0d4-border);color:var(--n0d4-text)}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-thumb{background:var(--n0d4-border);border-radius:var(--card-radius)}
.sidebar-section{margin-bottom:2px}
.sidebar-section-title:hover{color:var(--n0d4-text)}
.sidebar-link{display:block;padding:5px 20px 5px 22px;font-size:13px;
  color:var(--n0d4-muted);text-decoration:none;
  border-left:2px solid transparent}
.sidebar-link:hover{color:var(--n0d4-text);background:rgba(26,115,232,.025);border-left-color:var(--n0d4-border)}
.sidebar-link-sub{padding-left:34px;font-size:12px}
/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.main{margin-left:var(--sidebar-width);margin-top:var(--header-height);padding:48px 56px 100px;max-width:1000px}
/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1{font-size:28px;font-weight:700;margin-bottom:16px;color:var(--n0d4-text);
  letter-spacing:-.02em;line-height:1.4}
h2{font-size:22px;font-weight:700;margin:48px 0 20px;color:var(--n0d4-text);letter-spacing:-.01em}
h3{font-size:19px;font-weight:600;margin:32px 0 16px;color:var(--n0d4-text);letter-spacing:.01em}
h4{font-size:16px;font-weight:600;margin:24px 0 12px;color:var(--n0d4-text);letter-spacing:.01em}
p{margin-bottom:16px;max-width:75ch}
a{color:var(--n0d4-link);text-decoration:none}
a:hover{text-decoration:underline;color:#1a73e8}
strong{color:var(--n0d4-text);font-weight:600}
em{color:var(--n0d4-accent);font-style:normal;font-weight:500}
blockquote{border-left:3px solid var(--n0d4-accent);padding:16px 28px;margin:20px 0 28px;
  background:rgba(26,115,232,.04);border-radius:var(--card-radius);
  font-size:14.5px;color:var(--n0d4-muted);line-height:1.8}
blockquote p{margin-bottom:8px}
blockquote p:last-child{margin-bottom:0}
ul,ol{margin:12px 0 20px 24px}
li{margin-bottom:6px}
code{font-family:"SF Mono","Fira Code","Cascadia Code",monospace;font-size:13px;
  background:var(--n0d4-code-bg);padding:2px 8px;border-radius:var(--card-radius);color:#b8860b}
hr{border:none;height:1px;background:linear-gradient(to right,transparent,var(--n0d4-border),transparent);margin:64px 0}
/* ============================================================
   TABLE
   ============================================================ */
.table-wrap{overflow-x:auto;margin:20px 0 28px;border-radius:var(--card-radius);border:1px solid var(--n0d4-border)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
thead{background:var(--n0d4-surface)}
th{padding:12px 18px;text-align:left;font-weight:700;font-size:12.5px;letter-spacing:.04em;
  color:var(--n0d4-accent);border-bottom:2px solid var(--n0d4-border);white-space:nowrap}
td{padding:11px 18px;border-bottom:1px solid var(--n0d4-border);vertical-align:top;line-height:1.75}
tbody tr:nth-child(even){background:var(--n0d4-table-stripe)}
tbody tr:hover{background:var(--n0d4-accent-dim)}
/* ============================================================
   COMPONENTS
   ============================================================ */

/* Hero */
.hero{margin-bottom:40px}
.hero-meta{font-size:14px;color:var(--n0d4-muted);margin-top:12px}
.hero-tag{display:inline-block;padding:3px 14px;border:1px solid var(--n0d4-accent);
  color:var(--n0d4-accent);font-size:11px;font-weight:700;letter-spacing:.1em;
  border-radius:var(--card-radius);margin-right:10px;text-transform:uppercase}
/* Insight */
.insight{border:1px solid var(--n0d4-accent);border-radius:var(--card-radius);padding:18px 26px;
  margin:20px 0 28px;background:var(--n0d4-accent-dim);font-size:14.5px;line-height:1.8}
.insight strong{color:var(--n0d4-accent)}
/* Footer */
.footer{margin-top:72px;padding-top:28px;border-top:1px solid var(--n0d4-border);font-size:13px;color:var(--n0d4-muted);text-align:center;line-height:1.8}
/* Reference Links */
.ref-links{margin:16px 0 24px;padding:18px 22px;background:var(--n0d4-surface);border:1px solid var(--n0d4-border);border-radius:var(--card-radius)}
.ref-links-title{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--n0d4-muted);text-transform:uppercase;margin-bottom:12px}
.ref-links a{display:inline-block;margin:3px 6px 3px 0;font-size:13px;padding:4px 12px;
  background:rgba(26,115,232,.06);border:1px solid var(--n0d4-border);
  border-radius:var(--card-radius);color:var(--n0d4-link);white-space:normal}
.ref-links a:hover{background:rgba(26,115,232,.12);border-color:var(--n0d4-link);text-decoration:none}
.tactic-card-badge.cat{background:var(--n0d4-accent-dim);color:var(--n0d4-accent);border:1px solid rgba(26,115,232,.14)}
.tactic-card-badge.diff{background:rgba(26,115,232,.07);color:#7c7c88;border:1px solid rgba(26,115,232,.12)}
.tactic-card-badge.metric{background:rgba(26,115,232,.07);color:#a8a8b3;border:1px solid rgba(26,115,232,.12)}
.tactic-card-meta-item strong{color:var(--n0d4-accent);font-weight:600;font-size:12px}
.back-link:hover{color:var(--n0d4-accent);text-decoration:none}
.back-link::before{content:'←';font-size:14px}
.search-input:focus{border-color:var(--n0d4-accent)}
.search-input::placeholder{color:var(--n0d4-muted)}
.back-to-top.visible{opacity:1;pointer-events:auto}
.back-to-top:hover{background:var(--n0d4-border)}