/* ============================================================
   JejakKripto — design tokens & global styles (v2 · Indonesia-first)
   深青绿 + 深蓝 + 珊瑚 + 金色 + 暖米白
   字体: Plus Jakarta Sans (标题) + system sans-serif (正文)
   ============================================================ */

:root {
  /* 品牌色 */
  --primary: #0F766E;
  --primary-hover: #115E59;
  --primary-light: #EAF6F2;

  /* 功能色 */
  --blue: #1E3A5F;
  --blue-light: #EEF4F8;
  --coral: #E76F51;
  --coral-light: #FCEDE8;
  --gold: #D9A441;
  --gold-light: #FAF3DF;
  --indonesia-red: #D94B45;

  /* 背景 */
  --bg: #F7F5F0;
  --bg-secondary: #F2F4F3;
  --card: #FFFFFF;

  /* 文字 */
  --heading: #17211F;
  --text: #34413E;
  --text-muted: #66736F;
  --text-light: #8A9692;

  /* 边框 */
  --border: #DDE5E2;
  --border-hover: #B9D9D1;
  --border-line: #E5EAE8;

  /* 结构 */
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 18px;
  --nav-h: 72px;
  --content: 740px;
  --shadow: 0 4px 16px rgba(23, 33, 31, 0.06);

  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--heading);
  line-height: 1.22;
  font-weight: 700;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--nav-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--heading);
  white-space: nowrap;
}
.brand .mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}
/* Logo 双色文字：Jejak(深) Kripto(青绿)，不用 .com */
.brand .jk {
  color: var(--heading);
}
.brand .jk strong {
  color: var(--primary);
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links > li { position: relative; }
.nav-links a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
}
.nav-links a:hover { background: var(--primary-light); color: var(--primary); }
.nav-links a.active { color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.search-toggle {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  font-size: 17px;
  color: var(--heading);
}
.nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--primary-hover); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  font-size: 18px;
  cursor: pointer;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  border: 1.5px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-hover); }
.btn-lg { padding: 14px 24px; font-size: 16px; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--bg) 0%, var(--primary-light) 100%);
  padding: 64px 0 56px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 40px;
  align-items: center;
}
.hero h1 {
  font-size: 46px;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.hero h1 .accent { color: var(--primary); }
.hero .lede { color: var(--text-muted); font-size: 18px; margin: 0 0 20px; max-width: 560px; }
.hero-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 24px;
}
.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.hero-tags span .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-quick { margin-top: 20px; display: flex; gap: 8px; flex-wrap: wrap; }
.hero-quick a {
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text);
  background: var(--card);
}
.hero-quick a:hover { border-color: var(--primary); color: var(--primary); }

.hero-card-list { display: flex; flex-direction: column; gap: 12px; }
.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
}
.hero-card:hover { border-color: var(--border-hover); }
.hero-card .ic {
  width: 38px; height: 38px; flex: none;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.hero-card .ttl { font-weight: 700; color: var(--heading); font-size: 15px; }
.hero-card .sub { color: var(--text-muted); font-size: 13px; }

/* ---------- 区块通用 ---------- */
.section { padding: 52px 0; }
.section-alt { background: var(--bg-secondary); }
.section-head { margin-bottom: 28px; }
.section-head h2 { font-size: 28px; margin: 0 0 6px; }
.section-head p { color: var(--text-muted); margin: 0; }

/* ---------- 卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.card .cat {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--coral);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.card h3 { font-size: 18px; margin: 8px 0 8px; }
.card p { color: var(--text-muted); font-size: 14.5px; margin: 0 0 12px; }
.card .link { font-weight: 700; font-size: 14px; }

/* ---------- 平台卡片（币安 / OKX） ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.platform-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.platform-card .top { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.platform-card .logo {
  width: 44px; height: 44px; flex: none;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px;
  color: var(--heading);
}
.platform-card h3 { font-size: 20px; margin: 0; }
.platform-card .desc { color: var(--text-muted); font-size: 14.5px; margin: 0 0 16px; }
.platform-card .quick {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 18px;
}
.platform-card .quick a {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 13.5px;
  color: var(--text);
  text-align: center;
}
.platform-card .quick a:hover { border-color: var(--primary); color: var(--primary); }
.platform-card .meta { font-size: 12.5px; color: var(--text-muted); margin-top: 12px; }

/* ---------- 新手路径 ---------- */
.steps { counter-reset: step; display: grid; gap: 12px; }
.step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px 16px 58px;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 16px; top: 16px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
}
.step h4 { margin: 0 0 4px; font-size: 16px; }
.step p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* ---------- Lagi cari solusi?（搜索区 · 深蓝） ---------- */
.search-hero {
  background: var(--blue);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  color: #fff;
}
.search-hero h2 { color: #fff; font-size: 28px; margin: 0 0 8px; }
.search-hero .lead { color: #DCE6EE; margin: 0 0 24px; font-size: 16px; }
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  max-width: 560px;
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  color: var(--text);
  font-family: var(--font-body);
  background: transparent;
}
.search-box .btn { padding: 10px 18px; }
.search-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.search-chips a {
  background: rgba(255, 255, 255, 0.10);
  color: #fff;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13.5px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.search-chips a:hover { background: rgba(255, 255, 255, 0.18); color: #fff; }

/* ---------- Jelajahi（分类 5 卡） ---------- */
.explore-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.explore-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.explore-card:hover { border-color: var(--border-hover); }
.explore-card .ic {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px;
}
.explore-card h3 { font-size: 15px; margin: 0; }
.explore-card .sub { color: var(--text-muted); font-size: 12.5px; line-height: 1.4; }
.ic-green { background: var(--primary-light); }
.ic-blue { background: var(--blue-light); }
.ic-coral { background: var(--coral-light); }
.ic-gold { background: var(--gold-light); }

/* ---------- USDT & Rupiah ---------- */
.usdt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.usdt-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.usdt-card .amount { font-family: var(--font-heading); font-weight: 700; font-size: 20px; color: var(--heading); margin: 0 0 6px; }
.usdt-card p { color: var(--text-muted); font-size: 14px; margin: 0 0 12px; }
.usdt-card .link { font-weight: 700; font-size: 14px; }

/* ---------- Kripto di Indonesia ---------- */
.indo-section { background: #FFF9F5; }
.indonesia-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.indo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.indo-card:hover { border-color: var(--border-hover); }
.indo-card .ic {
  width: 42px; height: 42px; flex: none;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px;
}
.indo-card h3 { font-size: 16px; margin: 0 0 4px; }
.indo-card p { color: var(--text-muted); font-size: 13.5px; margin: 0; line-height: 1.5; }

/* ---------- 文章列表 ---------- */
.post-list { display: flex; flex-direction: column; }
.post-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--border-line);
}
.post-item:last-child { border-bottom: none; }
.post-item .ttl { font-weight: 700; color: var(--heading); }
.post-item .ttl:hover { color: var(--primary); }
.post-item .meta-line { display: flex; align-items: center; gap: 8px; flex: none; }
.post-item .tag {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 999px;
}
.tag-green { background: var(--primary-light) !important; color: var(--primary) !important; border-color: transparent !important; }
.tag-coral { background: var(--coral-light) !important; color: #B84D36 !important; border-color: transparent !important; }
.tag-blue { background: var(--blue-light) !important; color: var(--blue) !important; border-color: transparent !important; }
.tag-gold { background: var(--gold-light) !important; color: #96701C !important; border-color: transparent !important; }
.difficulty { color: var(--text-muted); font-size: 12.5px; font-weight: 600; }

/* ---------- Baru diperiksa ---------- */
.updated-section { background: var(--bg-secondary); }
.updated-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
}
.updated-item:last-child { margin-bottom: 0; }
.updated-item .ttl { font-weight: 700; color: var(--heading); }
.verified {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------- Trust / Cara kami bekerja ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.trust-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.trust-card:hover { border-color: var(--border-hover); }
.trust-card .ic {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--blue-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px;
  margin-bottom: 10px;
}
.trust-card h3 { font-size: 16px; margin: 0 0 6px; }
.trust-card p { color: var(--text-muted); font-size: 13.5px; margin: 0; line-height: 1.5; }

/* ---------- 文章页 ---------- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--content)) 260px;
  gap: 40px;
  padding: 40px 0;
}
.article-body { max-width: var(--content); }
.article-body h1 { font-size: 32px; margin: 8px 0 16px; }
.article-body h2 { font-size: 24px; margin: 32px 0 12px; }
.article-body p { margin: 0 0 16px; }
.article-meta {
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.breadcrumb { font-size: 13.5px; color: var(--text-muted); margin-bottom: 8px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }

.table-wrap { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
th { background: var(--bg-secondary); font-weight: 700; }

.toc {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  align-self: start;
  font-size: 14px;
}
.toc h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin: 0 0 10px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--border); }
.toc li { margin: 0; }
.toc a { display: block; padding: 5px 0 5px 14px; color: var(--text-muted); }
.toc a:hover { color: var(--primary); }

/* 披露 / 提示框 */
.disclose {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 3px solid var(--coral);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 16px 0;
}
.callout {
  background: var(--blue-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 16px 0;
}
.warn {
  background: #FFF5F2;
  border: 1px solid var(--border);
  border-left: 3px solid var(--coral);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 16px 0;
  color: #58403A;
}
.safe {
  background: var(--primary-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 16px 0;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #173B38;
  color: #DDE8E5;
  padding: 48px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
}
.site-footer .brand { color: #fff; }
.site-footer .brand .jk { color: #fff; }
.site-footer .brand .jk strong { color: #7FC9BF; }
.site-footer h4 { color: #fff; font-size: 14px; margin: 0 0 12px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0 0 8px; }
.site-footer a { color: #DDE8E5; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-brand p { color: #B9CEC9; font-size: 14px; }
.footer-bottom {
  background: #102F2D;
  margin: 0 -9999px;
  padding: 18px 9999px;
  color: #9FB8B2;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero-grid, .platform-grid, .article-layout, .footer-grid, .indonesia-grid {
    grid-template-columns: 1fr;
  }
  .toc { position: static; order: 2; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .hero { padding: 40px 0; }
  .hero h1 { font-size: 30px; }
  .search-hero { padding: 28px 20px; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 8px 16px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-cta { display: none; }
  .article-body h1 { font-size: 26px; }
  .article-body h2 { font-size: 21px; }
}