/* ==========================================================================
   你的名字 · 个人主页
   纯静态样式表，无构建步骤。修改配色请从 :root 的变量入手。
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  color-scheme: light;

  --paper:    #f6f2ea;
  --paper-2:  #efe9de;
  --ink:      #17140f;
  --ink-soft: #3d362d;
  --muted:    #6f6659;
  --line:     rgba(23, 20, 15, 0.14);
  --line-2:   rgba(23, 20, 15, 0.07);
  --accent:   #bc4127;
  --accent-q: rgba(188, 65, 39, 0.12);
  --on-accent:#fbf7f0;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC",
           "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
           "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono:  ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
           "Liberation Mono", monospace;

  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 56px);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper:    #141210;
    --paper-2:  #1c1916;
    --ink:      #f2ece1;
    --ink-soft: #d8d0c2;
    --muted:    #a2978a;
    --line:     rgba(242, 236, 225, 0.16);
    --line-2:   rgba(242, 236, 225, 0.08);
    --accent:   #ef6f4d;
    --accent-q: rgba(239, 111, 77, 0.14);
    --on-accent:#1a1512;
  }
}

/* 手动切换覆盖系统偏好 */
html[data-theme="light"] {
  color-scheme: light;
  --paper:    #f6f2ea;
  --paper-2:  #efe9de;
  --ink:      #17140f;
  --ink-soft: #3d362d;
  --muted:    #6f6659;
  --line:     rgba(23, 20, 15, 0.14);
  --line-2:   rgba(23, 20, 15, 0.07);
  --accent:   #bc4127;
  --accent-q: rgba(188, 65, 39, 0.12);
  --on-accent:#fbf7f0;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --paper:    #141210;
  --paper-2:  #1c1916;
  --ink:      #f2ece1;
  --ink-soft: #d8d0c2;
  --muted:    #a2978a;
  --line:     rgba(242, 236, 225, 0.16);
  --line-2:   rgba(242, 236, 225, 0.08);
  --accent:   #ef6f4d;
  --accent-q: rgba(239, 111, 77, 0.14);
  --on-accent:#1a1512;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(15.5px, 0.55vw + 14px, 17px);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 极细颗粒，给大色块一点纸质触感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, p, dl, dd, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }

::selection { background: var(--accent); color: var(--on-accent); }

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 16px; }

/* ---------- 通用文字样式 ---------- */
.eyebrow,
.facts dt,
.section__index,
.project__year,
.timeline__year,
.section__note,
.site-footer {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  justify-content: space-between;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 18px var(--gutter);
  border-bottom: 1px solid var(--line-2);
  background: var(--paper);                                   /* 旧浏览器兜底 */
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(12px) saturate(120%);
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-q);
}
.brand__text {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.02em;
}

.nav { display: flex; gap: clamp(14px, 3vw, 34px); margin-left: auto; }
.nav a {
  position: relative;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), rotate 0.4s var(--ease);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink); rotate: -18deg; }
.theme-toggle .icon { width: 16px; height: 16px; grid-area: 1 / 1; }
.icon--sun { display: none; }
@media (prefers-color-scheme: dark) {
  .icon--sun { display: block; }
  .icon--moon { display: none; }
}
html[data-theme="light"] .icon--sun { display: none; }
html[data-theme="light"] .icon--moon { display: block; }
html[data-theme="dark"] .icon--sun { display: block; }
html[data-theme="dark"] .icon--moon { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(56px, 11vw, 128px) var(--gutter) clamp(48px, 8vw, 96px);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -12%;
  right: -8%;
  width: min(46vw, 520px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--accent-q), transparent 68%);
  filter: blur(6px);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}
.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: breathe 3.2s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.35; transform: scale(0.7); }
}

.hero__title {
  margin-top: clamp(18px, 2.4vw, 30px);
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(46px, 9.2vw, 112px);
  line-height: 1.02;
  letter-spacing: -0.025em;
}
.hero__title em {
  font-style: italic;
  color: var(--accent);
}

.hero__lede {
  max-width: 44ch;
  margin-top: clamp(22px, 3vw, 34px);
  font-size: clamp(16px, 0.5vw + 14.6px, 18.5px);
  color: var(--ink-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14.5px;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease),
              color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.btn svg { width: 16px; height: 16px; transition: transform 0.3s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn--solid { background: var(--ink); color: var(--paper); }
.btn--solid:hover { background: var(--accent); color: var(--on-accent); transform: translateY(-2px); }
.btn--ghost { border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: clamp(44px, 6vw, 76px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.facts dt { color: var(--muted); font-size: 11px; }
.facts dd { margin-top: 6px; font-size: 14.5px; display: flex; align-items: center; gap: 8px; }
.facts a { border-bottom: 1px solid var(--line); transition: border-color 0.25s var(--ease); }
.facts a:hover { border-color: var(--accent); color: var(--accent); }
.pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #3f9d5a;
  box-shadow: 0 0 0 0 rgba(63, 157, 90, 0.55);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(63, 157, 90, 0.5); }
  70%  { box-shadow: 0 0 0 7px rgba(63, 157, 90, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 157, 90, 0); }
}

/* ---------- 区块骨架 ---------- */
.section {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(60px, 8vw, 108px) var(--gutter);
  border-top: 1px solid var(--line);
}

.section__head {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) minmax(0, 0.9fr);
  align-items: baseline;
  gap: 20px;
  margin-bottom: clamp(34px, 5vw, 56px);
}
.section__index { color: var(--accent); letter-spacing: 0.12em; }
.section__head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.section__note { color: var(--muted); text-transform: none; letter-spacing: 0.02em; font-size: 13px; }

/* ---------- 作品 ---------- */
.projects { display: grid; gap: 0; }

.project { border-top: 1px solid var(--line); }
.project:last-child { border-bottom: 1px solid var(--line); }

.project__link {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) 48px;
  gap: 24px;
  align-items: start;
  padding: clamp(22px, 3vw, 34px) 8px;
  transition: background-color 0.35s var(--ease), padding-inline 0.35s var(--ease);
}
.project__link:hover {
  background: color-mix(in srgb, var(--paper-2) 70%, transparent);
  padding-inline: 20px 16px;
}

.project__year { color: var(--muted); padding-top: 6px; }
.project__title {
  display: block;
  font-family: var(--serif);
  font-size: clamp(21px, 2.5vw, 29px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  transition: color 0.25s var(--ease);
}
.project__link:hover .project__title { color: var(--accent); }
.project__desc {
  display: block;
  max-width: 58ch;
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}
.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}
.project__tags span {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.project__arrow {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
              background-color 0.3s var(--ease), transform 0.35s var(--ease);
}
.project__arrow svg { width: 16px; height: 16px; }
.project__link:hover .project__arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  transform: rotate(45deg);
}

/* ---------- 关于 ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(36px, 6vw, 80px);
}
.about__text p {
  max-width: 46ch;
  font-size: clamp(16px, 0.4vw + 15px, 18px);
  color: var(--ink-soft);
}
.about__text p + p { margin-top: 1.1em; }

.meta-title {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.meta-title + * { margin-bottom: 32px; }

.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chips li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.chips li:hover { border-color: var(--accent); color: var(--accent); }

.timeline { display: grid; gap: 14px; }
.timeline li {
  display: grid;
  gap: 2px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}
.timeline__year { font-size: 11px; color: var(--muted); }
.timeline__what { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 联系 ---------- */
.section--contact { border-top: 1px solid var(--line); }

.contact { max-width: 780px; }
.contact__lede {
  max-width: 50ch;
  font-size: clamp(16px, 0.4vw + 15px, 18px);
  color: var(--ink-soft);
}

.contact__mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 40px);
}

.mailto {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-size: clamp(22px, 4.6vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.mailto svg { width: 0.62em; height: 0.62em; flex: none; transition: transform 0.3s var(--ease); }
.mailto:hover { color: var(--accent); border-color: var(--accent); }
.mailto:hover svg { transform: translate(2px, -2px); }

.copy {
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--muted);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.copy:hover { color: var(--ink); border-color: var(--ink); }
.copy[data-state="done"] { color: #3f9d5a; border-color: #3f9d5a; }

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: clamp(30px, 4vw, 46px);
}
.socials a {
  position: relative;
  font-size: 14.5px;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}
.socials a::before {
  content: "↗";
  margin-right: 6px;
  font-size: 12px;
  opacity: 0.5;
}
.socials a:hover { color: var(--accent); }

/* ---------- 页脚 ---------- */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 26px var(--gutter) 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}
.site-footer__meta { display: flex; gap: 18px; }
.site-footer__meta a:hover { color: var(--accent); }

/* ---------- 入场动效（无 JS 时内容照常可见） ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
}
.js .reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .section__head { grid-template-columns: 46px minmax(0, 1fr); row-gap: 6px; }
  .section__note { grid-column: 2; }
  .about { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-header { gap: 12px; }
  .nav { gap: 14px; }
  .nav a { font-size: 13px; }
  .brand__text { font-size: 15.5px; }

  .hero { padding-top: 52px; }
  .facts { grid-template-columns: 1fr; gap: 16px; }
  .facts > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
  .facts dd { margin-top: 0; }

  .project__link {
    grid-template-columns: minmax(0, 1fr) 40px;
    gap: 14px;
    padding-inline: 0;
  }
  .project__year { grid-column: 1; padding-top: 0; order: -1; }
  .project__body { grid-column: 1; }
  .project__arrow { grid-column: 2; grid-row: 1; align-self: center; }
}

@media (max-width: 420px) {
  .hero__actions { gap: 10px; }
  .btn { padding: 11px 18px; font-size: 14px; }
  .copy { display: none; }
}

/* ---------- 工具类 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 404 ---------- */
.notfound {
  display: grid;
  justify-items: start;
  align-content: center;
  gap: 18px;
  min-height: 100svh;
  max-width: 640px;
  margin-inline: auto;
  padding: 40px var(--gutter);
}
.notfound__code {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.notfound h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 7vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.notfound__text { color: var(--muted); max-width: 38ch; }

/* ==========================================================================
   研究档案：索引列表
   ========================================================================== */
.hero--compact { padding-top: clamp(40px, 6vw, 76px); padding-bottom: clamp(36px, 5vw, 64px); }
.hero--compact .hero__title { font-size: clamp(38px, 7.4vw, 88px); }
.hero--compact .hero__lede { max-width: 48ch; }

.archive { max-width: var(--wrap); margin-inline: auto; padding: clamp(20px, 3vw, 36px) var(--gutter) clamp(60px, 8vw, 100px); }

.year-group {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: clamp(16px, 3vw, 40px);
  padding-top: clamp(30px, 4vw, 46px);
}
.year-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 26px;
}

.entries { border-top: 1px solid var(--line); }
.entry { border-bottom: 1px solid var(--line); }

.entry__link {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) 44px;
  gap: clamp(14px, 2.4vw, 28px);
  align-items: start;
  padding: clamp(20px, 2.6vw, 30px) 8px;
  transition: background-color 0.35s var(--ease), padding-inline 0.35s var(--ease);
}
.entry__link:hover {
  background: color-mix(in srgb, var(--paper-2) 70%, transparent);
  padding-inline: 20px 14px;
}

.entry__meta { display: grid; gap: 8px; justify-items: start; padding-top: 4px; }
.entry__date { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.06em; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}
.badge--accent { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.entry__title {
  display: block;
  font-family: var(--serif);
  font-size: clamp(20px, 2.3vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  transition: color 0.25s var(--ease);
}
.entry__link:hover .entry__title { color: var(--accent); }
.entry__summary {
  display: block;
  max-width: 62ch;
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--muted);
}
.entry__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.entry__tags span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.entry__tags span + span::before { content: "·"; margin-right: 6px; }

.entry__arrow {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
              background-color 0.3s var(--ease), transform 0.35s var(--ease);
}
.entry__arrow svg { width: 16px; height: 16px; }
.entry__link:hover .entry__arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  transform: rotate(45deg);
}

/* ==========================================================================
   研究档案：文章页
   ========================================================================== */
.article {
  max-width: 760px;
  margin-inline: auto;
  padding: clamp(36px, 6vw, 72px) var(--gutter) clamp(60px, 8vw, 96px);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}
.back-link::before { content: "←"; }
.back-link:hover { color: var(--accent); }

.kicker {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.article h1 {
  margin-top: 14px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 5.4vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.article__lede {
  margin-top: 18px;
  font-size: clamp(16px, 0.4vw + 15px, 18.5px);
  color: var(--ink-soft);
  max-width: 56ch;
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 26px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.abstract {
  margin-top: 32px;
  padding: 20px 24px;
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--paper-2) 60%, transparent);
  font-size: 15px;
  color: var(--ink-soft);
}
.abstract p + p { margin-top: 0.9em; }
.abstract p { margin: 0; }

/* ---------- 正文排版 ---------- */
.prose {
  margin-top: 40px;
  font-size: clamp(16px, 0.3vw + 15.2px, 17.5px);
  line-height: 1.85;
  color: var(--ink-soft);
  overflow-wrap: break-word;
}
.prose > * + * { margin-top: 1.35em; }

.prose h2 {
  margin-top: 2.4em;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(23px, 2.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  scroll-margin-top: 96px;
}
.prose h2 + * { margin-top: 0.9em; }

.prose h3 {
  margin-top: 2em;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}
.prose h3 + * { margin-top: 0.7em; }

.prose ul, .prose ol { padding-left: 1.3em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.45em; }
.prose li::marker { color: var(--accent); }

.prose strong { color: var(--ink); font-weight: 600; }

.prose a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.prose a:hover { color: var(--accent); border-color: var(--accent); }

.prose blockquote {
  margin-inline: 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-style: italic;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 0.16em 0.42em;
  border-radius: 4px;
  background: var(--paper-2);
  color: var(--ink);
}

.prose pre {
  padding: 18px 20px;
  border-radius: 8px;
  overflow-x: auto;
  background: #1a1713;
  color: #efe8dc;
  font-size: 13.5px;
  line-height: 1.65;
  border: 1px solid rgba(0, 0, 0, 0.08);
}
.prose pre code { padding: 0; background: none; color: inherit; font-size: inherit; }

.prose table {
  display: block;
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.6;
  overflow-x: auto;
}
.prose th, .prose td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-2);
  vertical-align: top;
}
.prose th {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom-color: var(--line);
}

.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.6em 0; }

.prose figure { margin: 2.2em 0; }
.prose figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-2);
}
.prose figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 附件 ---------- */
.attachments {
  margin-top: clamp(44px, 6vw, 64px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.attachments h2 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.attachment-list { margin-top: 14px; }
.attachment {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line-2);
}
.attachment a {
  font-size: 15px;
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.attachment a:hover { color: var(--accent); border-color: var(--accent); }
.attachment__meta { font-family: var(--mono); font-size: 11px; color: var(--muted); }

.article-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: clamp(46px, 6vw, 70px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.article-foot a { transition: color 0.2s var(--ease); }
.article-foot a:hover { color: var(--accent); }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .year-group { grid-template-columns: 1fr; gap: 6px; padding-top: 26px; }
  .year-label { padding-top: 0; }
  .entry__link { grid-template-columns: minmax(0, 1fr) 40px; gap: 12px; padding-inline: 0; }
  .entry__meta { grid-column: 1; grid-auto-flow: column; justify-content: start; align-items: center; gap: 10px; order: -1; }
  .entry__body { grid-column: 1; }
  .entry__arrow { grid-column: 2; grid-row: 1; align-self: center; }
}

@media (prefers-color-scheme: dark) {
  .prose pre { background: #0f0d0b; border-color: rgba(255, 255, 255, 0.06); }
}
html[data-theme="light"] .prose pre { background: #1a1713; border-color: rgba(0, 0, 0, 0.08); }
html[data-theme="dark"] .prose pre { background: #0f0d0b; border-color: rgba(255, 255, 255, 0.06); }

/* ---------- 打印时去掉装饰，保留正文 ---------- */
@media print {
  body::before, .theme-toggle, .site-footer__meta a { display: none; }
  .site-header { position: static; }
  .js .reveal { opacity: 1; transform: none; }
}