:root {
  --paper: #EDEFEA;
  --ink:   #151A17;
  --mute:  #5F6A62;
  --rule:  #C4CAC2;
  --amber: #D8A24A;

  --serif: Georgia, "Songti SC", "SimSun", "Noto Serif CJK SC",
           "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
          "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;

  --measure: 34rem;
  --gutter: 1.5rem;
  --rail: 1.4rem;   /* 竖排眉题 */
  --stamp: 5.5rem;  /* 日期 */
  --colgap: 2rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--amber); color: var(--ink); }

.page {
  max-width: 50rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 跳到正文：只在键盘聚焦时出现 */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: .6rem 1rem;
  font-family: var(--sans);
  font-size: .75rem;
  letter-spacing: .08em;
  text-decoration: none;
  z-index: 9;
}

.skip:focus { left: .5rem; top: .5rem; }

/* 片头：一条负片，穿孔露出纸色 */
.band {
  background: var(--ink);
  color: var(--paper);
  padding-block: 9px;
}

.perf {
  height: 14px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--paper) 0 14px,
    transparent 14px 23px
  );
  background-size: 100% 6px;
  background-position: center;
  background-repeat: repeat-x;
  opacity: .92;
}

.band__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.15rem 1.3rem;
}

.band__name {
  margin: 0;
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .1em;
}

.band__sub {
  margin: .6rem 0 0;
  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .16em;
  color: #A3AEA6;
  white-space: nowrap;
}

.band__edge {
  margin: 0;
  font-family: var(--sans);
  font-size: .7rem;
  line-height: 1.8;
  letter-spacing: .1em;
  color: var(--amber);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* 404 页里站名兼作回首页的入口 */
.band__home { color: inherit; text-decoration: none; }

.band__home:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  text-decoration-color: var(--amber);
}

.band a:focus-visible { outline-color: var(--paper); }

.lede {
  margin: 2.8rem 0 0;
  max-width: 30rem;
  font-size: 1.12rem;
  line-height: 1.85;
}

/* 区块：眉题 / 日期 / 正文 三列共用一条正文左缘 */
.block {
  display: grid;
  grid-template-columns: var(--rail) var(--stamp) minmax(0, 1fr);
  column-gap: var(--colgap);
  margin-top: 2.4rem;
  padding: 2.2rem 0;
  border-top: 1px solid var(--rule);
}

.rail {
  grid-column: 1;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  justify-self: start;
  margin: 0;
  font-family: var(--sans);
  font-size: .74rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .34em;
  color: var(--mute);
}

.prose { grid-column: 3; }

.prose p {
  max-width: var(--measure);
  margin: 0 0 1rem;
}

.prose p:last-child { margin-bottom: 0; }

/* 手记 */
.entries {
  grid-column: 2 / -1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry {
  display: grid;
  grid-template-columns: var(--stamp) minmax(0, 1fr);
  column-gap: var(--colgap);
  margin-bottom: 1.9rem;
  padding-bottom: 1.9rem;
  border-bottom: 1px solid var(--rule);
}

.entry:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.entry__date {
  margin: 0;
  font-family: var(--sans);
  font-size: .74rem;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.entry__text {
  margin: 0;
  max-width: var(--measure);
}

.entry__meta {
  margin: .55rem 0 0;
  font-family: var(--sans);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--mute);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem 1.6rem;
  margin-top: 3rem;
  padding-top: 1.3rem;
  padding-bottom: 3.2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.foot p { margin: 0; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--mute);
  text-underline-offset: 3px;
  transition: text-decoration-color .15s ease, text-decoration-thickness .15s ease;
}

a:hover {
  text-decoration-color: var(--ink);
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

@supports not selector(:focus-visible) {
  a:focus {
    outline: 2px solid var(--ink);
    outline-offset: 3px;
  }
}

@media (max-width: 40rem) {
  body { font-size: 16.5px; }

  .band__inner { align-items: flex-start; gap: 1rem; padding-block: 1rem 1.15rem; }
  .band__name { font-size: 1.95rem; }
  .band__edge { font-size: .66rem; line-height: 1.7; }

  .lede { margin-top: 2.1rem; font-size: 1.05rem; }

  .block {
    grid-template-columns: minmax(0, 1fr);
    column-gap: 0;
    margin-top: 1.9rem;
    padding: 1.8rem 0;
  }

  .rail {
    grid-column: 1;
    writing-mode: horizontal-tb;
    width: 100%;
    margin-bottom: 1.15rem;
    padding-bottom: .55rem;
    border-bottom: 1px solid var(--rule);
    font-size: .7rem;
    letter-spacing: .3em;
  }

  .prose,
  .entries { grid-column: 1; }

  .entry { grid-template-columns: minmax(0, 1fr); column-gap: 0; }
  .entry__date { margin-bottom: .45rem; }

  .foot { flex-direction: column; gap: .3rem; }
}

@media (prefers-reduced-motion: reduce) {
  a { transition: none; }
}