/* Jimmie Ting · Landing
   仿 zhheo.com 极简语言 · 单文件 CSS */

:root {
  --bg: #fafafa;
  --card: #fff;
  --text: #111;
  --text-2: #5a5a5a;
  --text-3: #999;
  --border: #ececec;
  --accent: #357ef5;
  --accent-2: #43a6c6;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,.06);
  --shadow-lg: 0 16px 40px rgba(53,126,245,.12);
  --r: 16px;
  --r-lg: 22px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0f12;
    --card: #17191e;
    --text: #f3f4f6;
    --text-2: #b4b8c0;
    --text-3: #6e7280;
    --border: #24272e;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 8px 24px rgba(0,0,0,.4);
    --shadow-lg: 0 16px 40px rgba(53,126,245,.25);
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }

/* ── Nav ────────────────────────────── */
.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .5px;
}
.brand-mark.sm { width: 28px; height: 28px; font-size: 14px; border-radius: 7px; }
.brand-text { font-size: 15px; }
.nav-links { display: flex; gap: 24px; font-size: 14px; color: var(--text-2); }
.nav-links a:hover { color: var(--accent); }

/* ── Hero ────────────────────────────── */
.hero {
  max-width: 880px;
  margin: 60px auto 80px;
  padding: 0 24px;
  text-align: center;
}
.logo-mark {
  width: 88px; height: 88px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  margin: 0 auto 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  font-size: 44px;
  letter-spacing: 1px;
  box-shadow: var(--shadow-lg);
}
.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 2.5px;
  color: var(--text-3);
  margin: 0 0 16px;
  text-transform: uppercase;
  font-weight: 500;
}
.hero-title {
  font-size: clamp(32px, 5.4vw, 52px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.5px;
  margin: 0 0 20px;
}
.hero-title .dot { color: var(--accent); }
.hero-sub {
  font-size: 16px;
  color: var(--text-2);
  margin: 0 auto 36px;
  max-width: 560px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: all .2s;
  box-shadow: var(--shadow-sm);
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #2563eb;
  color: #fff;
  box-shadow: var(--shadow-lg);
}

/* ── Section ────────────────────────────── */
.section {
  max-width: 1080px;
  margin: 0 auto 80px;
  padding: 0 24px;
}
.section-head { margin-bottom: 28px; }
.section-eyebrow {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-3);
  margin: 0 0 6px;
  text-transform: uppercase;
  font-weight: 500;
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -.3px;
}

/* ── Cards ────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 820px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .cards { grid-template-columns: 1fr; } }

.card {
  position: relative;
  display: block;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: all .25s;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.card-static { cursor: default; }
.card:not(.card-static):hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.card-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--accent);
  background: rgba(53,126,245,.08);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
  font-weight: 500;
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -.2px;
}
.card-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.55;
}
.card-arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  font-size: 18px;
  color: var(--text-3);
  transition: all .25s;
}
.card:hover .card-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

/* ── Posts ────────────────────────────── */
.posts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 820px) { .posts { grid-template-columns: 1fr; } }

.post {
  display: block;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: all .25s;
  box-shadow: var(--shadow-sm);
}
.post:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.post-date {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 8px;
}
.post-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.post-desc {
  font-size: 13px;
  color: var(--text-2);
}
.posts-empty {
  grid-column: 1/-1;
  padding: 36px;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--r);
  color: var(--text-2);
  text-align: center;
  font-size: 14px;
}
.posts-empty a {
  color: var(--accent);
  margin-left: 6px;
  font-weight: 500;
}
.posts-empty a:hover { text-decoration: underline; }

/* ── Footer ────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-2);
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a:hover { color: var(--accent); }