/* =========================================================
   极简个人主页 · 样式
   主题通过 <html data-theme="light|dark"> 切换，
   颜色全部走下面的 CSS 变量，改配色只需要动这一块。
   ========================================================= */

:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --bg: #ffffff;
  --bg-soft: #f7f7f6;
  --text: #101012;
  --muted: #6c6c72;
  --line: #e6e6e3;
  --accent: #101012;
  --accent-ink: #ffffff;
  --focus: rgba(16, 16, 18, .45);

  --maxw: 720px;
  --pad: 24px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

[data-theme="dark"] {
  --bg: #0a0a0b;
  --bg-soft: #121214;
  --text: #f3f3f1;
  --muted: #93939a;
  --line: #232326;
  --accent: #f3f3f1;
  --accent-ink: #0a0a0b;
  --focus: rgba(243, 243, 241, .5);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.7 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 0 0 10px 0; z-index: 100;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------- 顶栏 ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 18px;
  min-height: 60px;
}
.brand {
  font-weight: 600; letter-spacing: -.01em; text-decoration: none;
}
.nav {
  display: flex; gap: 20px; margin-inline-start: auto;
  font-size: 14.5px; color: var(--muted);
}
.nav a { text-decoration: none; transition: color .2s var(--ease); }
.nav a:hover { color: var(--text); }

.theme-toggle {
  display: grid; place-items: center;
  width: 36px; height: 36px; padding: 0;
  background: transparent; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.theme-toggle:hover { color: var(--text); border-color: var(--muted); }
.theme-toggle:active { transform: scale(.94); }
.theme-toggle svg {
  width: 17px; height: 17px;
  fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
}
[data-theme="light"] .i-moon { display: none; }
[data-theme="dark"] .i-sun { display: none; }

/* ---------------- 首屏 ---------------- */
.hero { padding-block: clamp(56px, 12vw, 104px) clamp(40px, 8vw, 72px); }

.status {
  display: inline-flex; align-items: center; gap: 8px;
  margin: 0 0 22px;
  font-size: 13.5px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 13px 5px 11px;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 3px color-mix(in srgb, #22c55e 22%, transparent);
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(29px, 6.2vw, 47px);
  line-height: 1.16;
  font-weight: 500;
  letter-spacing: -.028em;
}
.hero h1 b { font-weight: 650; }

.lede {
  margin: 0 0 30px;
  max-width: 56ch;
  font-size: clamp(15.5px, 2.1vw, 17px);
  color: var(--muted);
}

.hero-links { display: flex; flex-wrap: wrap; gap: 11px; margin: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 21px;
  font-size: 15px; font-weight: 500; text-decoration: none;
  background: var(--accent); color: var(--accent-ink);
  border: 1px solid var(--accent); border-radius: 999px;
  transition: opacity .2s var(--ease), transform .2s var(--ease),
              background-color .3s var(--ease), color .3s var(--ease);
}
.btn:hover { opacity: .85; }
.btn:active { transform: scale(.98); }
.btn.ghost {
  background: transparent; color: var(--text); border-color: var(--line);
}
.btn.ghost:hover { border-color: var(--muted); opacity: 1; }

/* ---------------- 分隔与区块 ---------------- */
.rule {
  height: 1px; border: 0; margin: 0;
  background: var(--line);
}
.section { padding-block: clamp(44px, 8vw, 72px); }

.eyebrow {
  margin: 0 0 26px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted);
}

.prose p { margin: 0 0 18px; max-width: 62ch; }
.prose p:last-of-type { margin-bottom: 26px; }

.tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 0; padding: 0; list-style: none;
}
.tags li {
  font-size: 13.5px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 13px;
}

/* ---------------- 作品列表 ---------------- */
.works { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.work { border-bottom: 1px solid var(--line); }

.work-link {
  display: block;
  padding: 26px 2px;
  text-decoration: none;
  transition: padding-inline .28s var(--ease), background-color .28s var(--ease);
}
.work-link:hover { padding-inline: 12px; background: var(--bg-soft); }

.work-head {
  display: flex; align-items: baseline; gap: 14px;
  justify-content: space-between;
}
.work-head h3 {
  margin: 0;
  font-size: clamp(17px, 2.6vw, 19.5px);
  font-weight: 550; letter-spacing: -.012em;
}
.work-year { font-size: 13.5px; color: var(--muted); font-variant-numeric: tabular-nums; }

.work-role {
  margin: 6px 0 0; font-size: 13.5px; color: var(--muted);
  letter-spacing: .01em;
}
.work-desc {
  margin: 10px 0 0; max-width: 60ch;
  font-size: 15px; color: var(--muted);
}
.work-cta {
  display: inline-block; margin-top: 12px;
  font-size: 14px; font-weight: 500;
  opacity: 0; transform: translateX(-4px);
  transition: opacity .28s var(--ease), transform .28s var(--ease);
}
.work-link:hover .work-cta,
.work-link:focus-visible .work-cta { opacity: 1; transform: translateX(0); }

/* ---------------- 联系 ---------------- */
.contact-mail {
  margin: 4px 0 26px;
  font-size: clamp(20px, 4vw, 27px);
  letter-spacing: -.02em;
}
.contact-mail a {
  text-decoration: none;
  border-bottom: 1.5px solid var(--line);
  padding-bottom: 3px;
  transition: border-color .25s var(--ease);
}
.contact-mail a:hover { border-color: var(--text); }

.socials {
  display: flex; flex-wrap: wrap; gap: 20px;
  margin: 0; padding: 0; list-style: none;
  font-size: 15px;
}
.socials a {
  color: var(--muted); text-decoration: none;
  transition: color .2s var(--ease);
}
.socials a:hover { color: var(--text); }

/* ---------------- 页脚 ---------------- */
.site-footer { border-top: 1px solid var(--line); }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
  padding-block: 26px;
  font-size: 13.5px; color: var(--muted);
}
.muted { color: var(--muted); }

/* ---------------- 滚动出现（JS 开启，无 JS 也能看） ---------------- */
.reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------------- 手机端微调 ---------------- */
@media (max-width: 560px) {
  :root { --pad: 20px; }
  .nav { gap: 15px; font-size: 14px; }
  .header-inner { gap: 12px; }
  .work-link:hover { padding-inline: 8px; }
  .work-cta { opacity: 1; transform: none; }
  .footer-inner { flex-direction: column; }
}
