/* ============================================================
   阿七的小屋 · 全站样式
   配色：米白背景 / 深绿文字 / 少量橙色点缀
   ============================================================ */

:root {
  --bg: #FAF7EF;
  --surface: #FFFDF8;
  --ink: #1E3A2B;
  --ink-2: #45604F;
  --ink-3: #7C8C80;
  --accent: #D9773F;
  --accent-ink: #A8541F;
  --accent-soft: #F6E6D8;
  --line: #E6DFCC;
  --radius-l: 18px;
  --radius-m: 12px;
  --wrap: 1080px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; line-height: 1.4; font-weight: 700; letter-spacing: .01em; }
p { margin: 0; }
a { color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
img, svg { max-width: 100%; height: auto; }

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

/* ---------- 无障碍：跳转链接与键盘焦点 ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: #FFFDF8;
  padding: .6rem 1rem;
  text-decoration: none;
  border-radius: 0 0 var(--radius-m) 0;
}
.skip-link:focus { left: 0; }

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 页头与导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(250, 247, 239, .94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  padding: .8rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .02em;
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex: none;
  border-radius: 9px;
  background: var(--ink);
  color: #F7F2E6;
  font-size: .82rem;
  font-weight: 700;
  line-height: 1;
  display: grid;
  place-items: center;
}

.site-nav ul { display: flex; flex-wrap: wrap; gap: .25rem; }

.nav-link {
  display: inline-block;
  padding: .35rem .8rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-2);
  font-size: .98rem;
}
.nav-link:hover { background: #F1ECDD; color: var(--ink); }
.nav-link[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 700;
}

/* ---------- 通用区块 ---------- */

.section { padding: 2.5rem 0; }
.section + .section { border-top: 1px solid var(--line); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem 1rem;
  margin-bottom: 1.4rem;
}
.section-head h2 { font-size: 1.35rem; }

.section-note {
  color: var(--ink-3);
  font-size: .88rem;
  max-width: 62ch;
}

.eyebrow {
  color: var(--accent-ink);
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .16em;
  margin-bottom: .6rem;
}

/* ---------- 首页 · 首屏 ---------- */

.hero {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr);
  padding: 2.75rem 0 2.25rem;
}

.hero h1 { font-size: clamp(1.7rem, 1.05rem + 2.9vw, 2.9rem); }
.lede { margin-top: 1rem; color: var(--ink-2); font-size: 1.05rem; max-width: 34ch; }

.hero-art {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
  padding: 18px;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--surface);
}
.hero-art span { display: block; border-radius: 10px; }
.hero-art .blk-a { grid-row: 1 / span 2; background: #DDE8D9; }
.hero-art .blk-b { background: var(--accent-soft); }
.hero-art .blk-c { background: #EDE6D4; }

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 3rem;
    padding: 4.5rem 0 3.5rem;
  }
}

/* ---------- 作品卡片 ---------- */

.cards { display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 1fr); }

@media (min-width: 780px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
}

.card {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.card-art {
  position: relative;
  height: 118px;
  border-radius: var(--radius-m);
  overflow: hidden;
}

/* 装饰示意：分区布局（抽象几何，非产品截图） */
.art-blank {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
  padding: 10px;
  background: #F2F5EC;
}
.art-blank span { display: block; border-radius: 7px; }
.art-blank .z-a { grid-row: 1 / span 2; background: #CFDEC9; }
.art-blank .z-b { background: var(--accent-soft); }
.art-blank .z-c { background: #E7E1CF; }

/* 装饰示意：点阵网格（抽象几何，非产品截图） */
.art-bead {
  background-color: #F3F1E7;
  background-image: radial-gradient(circle, #CFD9CD 1.5px, transparent 1.6px);
  background-size: 14px 14px;
}
.art-bead::after {
  content: "";
  position: absolute;
  right: 16px;
  bottom: 14px;
  width: 62px;
  height: 38px;
  border-radius: 8px;
  background: var(--accent);
  opacity: .85;
}

.card-body { display: flex; flex-direction: column; gap: .6rem; flex: 1; }
.card-title { font-size: 1.15rem; }
.card-desc { color: var(--ink-2); font-size: .98rem; }

.card-usage {
  align-self: flex-start;
  padding: .18rem .65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #8A4A1E;
  font-size: .82rem;
  font-weight: 700;
}

.card-foot { display: flex; flex-wrap: wrap; gap: .6rem 1rem; }

.card-link {
  display: inline-block;
  padding-bottom: 1px;
  text-decoration: none;
  font-weight: 700;
  color: var(--accent-ink);
  border-bottom: 2px solid var(--accent-soft);
  overflow-wrap: anywhere;
}
.card-link:hover { border-bottom-color: var(--accent); }

/* ---------- 首页 · 记录入口 ---------- */

.note-teaser {
  display: grid;
  gap: .5rem;
  max-width: 760px;
  padding: 1.4rem;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  transition: transform .15s ease, border-color .15s ease;
}
.note-teaser:hover { transform: translateY(-2px); border-color: #D9CFB4; }
.note-teaser h3 { font-size: 1.15rem; }

.note-label {
  color: var(--accent-ink);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .14em;
}

.note-excerpt { color: var(--ink-2); font-size: .98rem; }
.note-more { color: var(--accent-ink); font-weight: 700; font-size: .95rem; }

/* ---------- 记录页 ---------- */

.article { max-width: 720px; padding: 3rem 0 3.5rem; }
.article h1 { font-size: clamp(1.5rem, 1rem + 2.2vw, 2.15rem); margin: .2rem 0 .7rem; }
.article-meta { color: var(--ink-3); font-size: .88rem; margin-bottom: 1.75rem; }
.article p { font-size: 1.05rem; color: #263F30; }
.article p + p { margin-top: 1.1rem; }

.back-link {
  display: inline-block;
  margin-top: 2.25rem;
  text-decoration: none;
  font-weight: 700;
  color: var(--accent-ink);
}

/* ---------- 关于页 ---------- */

.about {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: minmax(0, 1fr);
  padding: 3rem 0 3.5rem;
}

.avatar {
  width: 88px;
  height: 88px;
  margin-bottom: 1.25rem;
  border-radius: 24px;
  background: var(--ink);
  color: #F7F2E6;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  display: grid;
  place-items: center;
}

.about h1 { font-size: clamp(1.5rem, 1rem + 2.2vw, 2.15rem); margin-bottom: 1rem; }
.about-main p { font-size: 1.05rem; color: #263F30; max-width: 62ch; }

.panel {
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}
.panel h2 { font-size: 1.05rem; margin-bottom: .9rem; }

.fact-list { display: grid; gap: .7rem; font-size: .96rem; color: var(--ink-2); }
.fact-list strong { display: block; color: var(--ink); }
.fact-list a {
  color: var(--accent-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  overflow-wrap: anywhere;
}
.fact-list a:hover { border-bottom-color: var(--accent); }

@media (min-width: 900px) {
  .about {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: 1rem;
  padding: 1.6rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: .88rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .4rem 1.5rem;
}

/* ---------- 减少动态效果 ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}