/* 梯子宝 tizib.mom — 原创二次元风格设计系统。
   配色/命名/组件与 mtizi.mom、itizi 系站点均不相同，独立设计。 */

:root {
  --bg: #fff8fb;
  --bg-panel: #ffffff;
  --bg-card-2: #fef1f7;
  --text-main: #2a1f33;
  --text-muted: #6b5b73;
  --border-color: #f3d9e8;
  --border-soft: #f8e6f0;
  --primary: #a855f7;
  --primary-dark: #7e22ce;
  --primary-rgb: 168, 85, 247;
  --accent: #ec4899;
  --accent-dark: #be185d;
  --accent-rgb: 236, 72, 153;
  --mint: #2dd4bf;
  --mint-dark: #0f766e;
  --gold: #f59e0b;
  --gold-dark: #b45309;
  --shadow-card: 0 6px 20px rgba(168, 85, 247, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
}

:root[data-theme="dark"] {
  --bg: #1a1024;
  --bg-panel: #24162f;
  --bg-card-2: #2c1a3a;
  --text-main: #f5ecfa;
  --text-muted: #c3aed6;
  --border-color: #3d2650;
  --border-soft: #33204399;
  --primary: #c084fc;
  --primary-dark: #a855f7;
  --primary-rgb: 192, 132, 252;
  --accent: #f472b6;
  --accent-dark: #ec4899;
  --accent-rgb: 244, 114, 182;
  --mint: #5eead4;
  --mint-dark: #2dd4bf;
  --gold: #fbbf24;
  --gold-dark: #f59e0b;
  --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ---------------- header ---------------- */
.site-header {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 2px 12px rgba(168, 85, 247, 0.25);
}
.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px;
  background: rgba(255,255,255,0.22);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-cn { font-weight: 800; font-size: 17px; }
.brand-en { font-size: 10px; letter-spacing: 2px; opacity: 0.85; }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 34px; height: 34px; flex-direction: column; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 100%; height: 2.5px; background: #fff; border-radius: 2px; }

.nav-wrap { display: flex; align-items: center; gap: 18px; }
.site-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  color: #fff; font-weight: 700; font-size: 14px; padding: 8px 12px;
  border-radius: 999px; opacity: 0.92;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: rgba(255,255,255,0.22); text-decoration: none; opacity: 1;
}
.theme-toggle {
  background: rgba(255,255,255,0.2); border: none; border-radius: 999px;
  width: 34px; height: 34px; cursor: pointer; font-size: 15px;
}

/* ---------------- breadcrumb ---------------- */
.breadcrumb {
  max-width: 1180px; margin: 14px auto 0; padding: 0 20px;
  font-size: 13px; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }

/* ---------------- layout ---------------- */
.page-wrap { max-width: 1180px; margin: 0 auto; padding: 20px 20px 60px; }

/* ---------------- hero ---------------- */
.hero {
  background: linear-gradient(160deg, rgba(var(--primary-rgb),0.14), rgba(var(--accent-rgb),0.10));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  margin: 10px 0 26px;
}
.hero h1 { font-size: 28px; margin: 0 0 10px; color: var(--primary-dark); }
.hero .lede { font-size: 15.5px; color: var(--text-muted); margin: 0 0 18px; max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

h1 { font-size: 26px; margin: 4px 0 14px; }
h2 { font-size: 21px; margin: 34px 0 12px; color: var(--primary-dark); }
h3 { font-size: 16.5px; margin: 18px 0 8px; }
p { font-size: 15.5px; color: var(--text-main); margin: 0 0 14px; }
ul, ol { margin: 0 0 16px 22px; }
li { margin-bottom: 6px; font-size: 15px; }

/* ---------------- quad nav cards (五宫格 Pillar 入口) ---------------- */
.pillar-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 24px 0;
}
.pillar-card {
  background: var(--bg-panel); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 18px 14px; text-align: center;
  box-shadow: var(--shadow-card); transition: transform .15s ease;
}
.pillar-card:hover { transform: translateY(-3px); text-decoration: none; }
.pillar-card .emoji { font-size: 30px; display: block; margin-bottom: 8px; }
.pillar-card h3 { margin: 0 0 4px; font-size: 15px; color: var(--text-main); }
.pillar-card p { font-size: 12.5px; color: var(--text-muted); margin: 0; }

/* ---------------- buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 22px; border-radius: 999px; font-weight: 800; font-size: 14.5px;
  border: 2px solid transparent; cursor: pointer; line-height: 1.2;
}
.btn-cta { background: linear-gradient(135deg, var(--accent), var(--primary)); color: #fff; box-shadow: 0 4px 14px rgba(var(--accent-rgb),0.4); }
.btn-cta:hover { filter: brightness(1.07); text-decoration: none; }
.btn-outline { background: transparent; color: var(--primary-dark); border-color: var(--primary); }
.btn-outline:hover { background: rgba(var(--primary-rgb), 0.08); text-decoration: none; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------------- brand cards (Top3 编辑推荐) ---------------- */
.brand-card-row { display: flex; flex-wrap: wrap; gap: 16px; margin: 20px 0; }
.brand-card {
  flex: 1 1 260px; background: var(--bg-panel); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-card); position: relative;
}
.brand-card.is-first { border: 2px solid var(--accent); background: linear-gradient(160deg, rgba(var(--accent-rgb),0.10), var(--bg-panel)); }
.rank-badge {
  position: absolute; top: -12px; left: 16px; background: var(--accent); color: #fff;
  font-weight: 800; font-size: 12px; padding: 4px 10px; border-radius: 999px;
}
.brand-card h3 { margin: 10px 0 6px; font-size: 17px; }
.brand-card p { font-size: 13.5px; color: var(--text-muted); margin-bottom: 12px; }

/* ---------------- badges/tags ---------------- */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700;
  background: var(--bg-card-2); color: var(--primary-dark); margin: 0 6px 6px 0;
}
.tag-mint { background: rgba(45, 212, 191, 0.15); color: var(--mint-dark); }
.tag-gold { background: rgba(245, 158, 11, 0.15); color: var(--gold-dark); }

/* ---------------- checklist / steps ---------------- */
.step-list { list-style: none; margin: 0 0 18px; padding: 0; counter-reset: step; }
.step-list li {
  counter-increment: step; position: relative; padding-left: 40px; margin-bottom: 14px; font-size: 15px;
}
.step-list li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px;
}

/* ---------------- card grid (工具/教程列表) ---------------- */
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 18px 0; }
.mini-card {
  background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: var(--radius-md);
  padding: 16px; box-shadow: var(--shadow-card);
}
.mini-card h3 { margin: 0 0 6px; font-size: 15.5px; }
.mini-card p { font-size: 13.5px; color: var(--text-muted); margin-bottom: 10px; }

/* ---------------- callout / disclosure ---------------- */
.callout {
  background: var(--bg-card-2); border: 1px solid var(--border-color); border-radius: var(--radius-md);
  padding: 16px 18px; margin: 18px 0; font-size: 14px; color: var(--text-muted);
}
.callout strong { color: var(--text-main); }

/* ---------------- faq ---------------- */
.faq-item {
  background: var(--bg-panel); border: 1px solid var(--border-color); border-radius: var(--radius-md);
  padding: 14px 18px; margin-bottom: 10px;
}
.faq-item summary { cursor: pointer; font-weight: 700; font-size: 15px; }
.faq-a { margin-top: 10px; color: var(--text-muted); }

/* ---------------- related links ---------------- */
.related-links { background: var(--bg-card-2); border-radius: var(--radius-md); padding: 18px 20px; margin-top: 30px; }
.related-links h4 { margin: 0 0 10px; }
.related-links ul { margin: 0; padding-left: 20px; }

/* ---------------- footer ---------------- */
.site-footer { background: var(--bg-panel); border-top: 1px solid var(--border-color); margin-top: 50px; }
.footer-inner { max-width: 1180px; margin: 0 auto; padding: 40px 20px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.footer-col h4 { font-size: 14px; margin: 0 0 12px; color: var(--text-main); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; font-size: 13.5px; }
.footer-col a { color: var(--text-muted); }
.footer-logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 16px; margin-bottom: 8px; }
.footer-bottom { border-top: 1px solid var(--border-color); padding: 16px 20px 30px; max-width: 1180px; margin: 0 auto; font-size: 12px; color: var(--text-muted); }
.footer-disclosure { max-width: 900px; }

/* ---------------- mobile ---------------- */
@media (max-width: 860px) {
  .pillar-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-wrap {
    position: absolute; top: 100%; left: 0; right: 0; background: var(--primary-dark);
    flex-direction: column; align-items: stretch; padding: 10px 20px 16px; gap: 10px;
    display: none;
  }
  .nav-wrap.is-open { display: flex; }
  .site-nav ul { flex-direction: column; gap: 2px; }
  .site-nav a { display: block; }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 22px; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .pillar-grid { grid-template-columns: 1fr; }
}