*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0a0a0a;
  --surface:#111;
  --surface2:#1a1a1a;
  --border:#222;
  --text:#e0e0e0;
  --text2:#999;
  --accent:#ff6b2b;
  --accent2:#ff8f5e;
  --gold:#ffc857;
}
body{
  font-family:'Noto Sans JP','Inter',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.9;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}

/* Top Bar */
.top-bar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,10,10,.92);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  padding:12px 24px;
  display:flex;align-items:center;gap:12px;
}
.top-bar .rocket{font-size:24px}
.top-bar h1{font-size:16px;font-weight:700;letter-spacing:.5px}
.top-bar .date{margin-left:auto;font-size:12px;color:var(--text2);font-family:'Inter',monospace}

/* Sidebar Navigation */
nav.toc{
  position:fixed;top:56px;left:0;bottom:0;width:220px;
  background:var(--surface);border-right:1px solid var(--border);
  padding:24px 16px;overflow-y:auto;z-index:90;
}
nav.toc a{
  display:block;padding:10px 14px;margin:2px 0;
  color:var(--text2);text-decoration:none;font-size:13px;font-weight:500;
  border-radius:8px;transition:all .2s;
}
nav.toc a:hover{
  color:var(--accent);background:rgba(255,107,43,.08);
}
nav.toc a.active{
  color:#fff;background:var(--accent);font-weight:700;
}
nav.toc .section-label{
  font-size:11px;color:var(--text2);text-transform:uppercase;letter-spacing:1.5px;
  padding:16px 12px 6px;font-weight:700;opacity:.5;
}

/* Main Content - Centered */
.page-wrapper{
  margin-left:220px;
  margin-top:56px;
  display:flex;
  justify-content:center;
  min-height:calc(100vh - 56px);
}
main{
  max-width:780px;
  width:100%;
  padding:48px 48px 120px;
}

/* Section Title */
section > h2{
  font-size:28px;font-weight:900;letter-spacing:1px;
  border-bottom:3px solid var(--accent);
  padding-bottom:12px;margin-bottom:32px;
}

/* Cards */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:12px;
  padding:28px 32px;
  margin-bottom:20px;
  transition:border-color .3s;
}
.card:hover{border-color:var(--accent)}
.card h3{
  font-size:17px;font-weight:700;margin-bottom:14px;
  line-height:1.6;
}
.card p{margin-bottom:10px;color:var(--text)}
.card .highlight{
  color:var(--accent2);font-weight:700;
}
.card blockquote{
  border-left:3px solid var(--accent);
  padding:12px 16px;margin:16px 0;
  background:rgba(255,107,43,.05);
  border-radius:0 8px 8px 0;
  font-weight:500;
}

/* Table */
.goal-table{
  width:100%;border-collapse:collapse;margin:16px 0;
  font-size:14px;
}
.goal-table th{
  background:rgba(255,107,43,.15);color:var(--accent2);font-weight:700;
  padding:10px 14px;text-align:left;border-bottom:2px solid var(--accent);
}
.goal-table td{
  padding:10px 14px;border-bottom:1px solid var(--border);
}
.goal-table tr:hover td{background:rgba(255,107,43,.05)}

/* Lists */
.habit-list{list-style:none;padding:0}
.habit-list li{
  padding:8px 0 8px 28px;position:relative;
}
.habit-list li::before{
  content:'';position:absolute;left:4px;top:14px;
  width:12px;height:12px;border-radius:50%;
  border:2px solid var(--accent);
}

/* Personal Goals Grid */
.personal-goals{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0;
}
.personal-goals .goal-item{
  background:var(--surface2);border-radius:8px;padding:12px 16px;
  font-size:14px;
}

/* Page Navigation (Prev/Next) */
.page-nav{
  display:flex;
  justify-content:space-between;
  align-items:stretch;
  gap:16px;
  margin-top:60px;
  padding-top:32px;
  border-top:1px solid var(--border);
}
.page-nav a{
  display:flex;flex-direction:column;
  padding:20px 24px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:12px;
  text-decoration:none;
  transition:all .3s;
  min-width:0;
  flex:1;
}
.page-nav a:hover{
  border-color:var(--accent);
  background:rgba(255,107,43,.05);
}
.page-nav a.next{
  text-align:right;
  align-items:flex-end;
}
.page-nav .nav-label{
  font-size:12px;color:var(--text2);margin-bottom:4px;font-weight:600;
  text-transform:uppercase;letter-spacing:1px;
}
.page-nav .nav-title{
  font-size:16px;font-weight:700;color:var(--accent2);
}
.page-nav .spacer{flex:1}

/* Scroll Progress */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--gold));
  z-index:200;transition:width .1s;
}

/* Mobile Bottom Nav */
.mobile-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;
  background:rgba(10,10,10,.95);backdrop-filter:blur(20px);
  border-top:1px solid var(--border);
  padding:8px;overflow-x:auto;white-space:nowrap;z-index:100;
}
.mobile-nav a{
  display:inline-block;padding:8px 14px;
  color:var(--text2);text-decoration:none;font-size:12px;font-weight:600;
  border-radius:20px;
}
.mobile-nav a.active{background:var(--accent);color:#fff}

/* Responsive */
@media(max-width:900px){
  nav.toc{display:none}
  .page-wrapper{margin-left:0}
  main{padding:32px 20px 140px}
  section > h2{font-size:22px}
  .personal-goals{grid-template-columns:1fr}
  .mobile-nav{display:block}
  .page-nav{flex-direction:column}
}

/* 矢印行: bullet非表示 */
.habit-list li.no-bullet::before{display:none}
.habit-list li.no-bullet{padding-left:8px}

/* 白文字の強調（accent色を使わない） */
.plain-strong{color:#fff;font-weight:700}