:root {
  --ink: #17171a;
  --paper: #f7f6f2;
  --paper-deep: #eceae4;
  --quiet: #77747d;
  --memory-red: #e56b6f;
  --memory-amber: #e9b949;
  --memory-green: #70b88b;
  --memory-blue: #6d9ed6;
  --memory-violet: #9a7bc2;
  --measure: 33rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.01em;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3rem, 11vh, 7.5rem) 1.5rem 7rem;
}

section[id] { scroll-margin-top: 3rem; }

/* header */

header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding-bottom: 2.75rem;
  border-bottom: 1px solid var(--paper-deep);
}

.bottle { flex: 0 0 auto; margin-top: 0.35rem; }

.titles h1 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
}

.titles p {
  margin: 0.9rem 0 0;
  color: var(--quiet);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* nav */

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-top: 1.6rem;
}

nav a {
  color: var(--quiet);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 220ms ease, border-color 220ms ease;
}

nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--paper-deep);
}

nav a:focus-visible {
  outline: 1.5px solid var(--memory-blue);
  outline-offset: 4px;
  border-radius: 3px;
}

/* sections */

section { padding-top: 3.25rem; }

.section-label {
  margin: 0;
  color: var(--quiet);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
}

.prose p {
  margin: 1.25rem 0 0;
  font-size: 0.9375rem;
  color: #45434a;
}

.prose ul {
  margin: 1.25rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  color: #45434a;
}

.prose img { max-width: 100%; height: auto; }

/* 一张像：摆在「关于」里，不抢字的位置 */

.prose .portrait {
  margin: 1.6rem 0 0;
}

.prose .portrait img {
  max-width: 15rem;
  height: auto;
}

.placeholder {
  margin: 1.25rem 0 0;
  color: var(--quiet);
  font-size: 0.9375rem;
}

.quiet-note {
  margin: 2.75rem 0 0;
  color: var(--quiet);
  font-size: 0.9375rem;
}

/* entries */

#entries {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 月份：记录按月分成几段，翻的时候能看出哪几条挨在一起 */

.month-mark {
  padding: 3.5rem 0 0;
}

.month-mark:first-child {
  padding-top: 0.4rem;
}

.month-label {
  margin: 0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--paper-deep);
  color: var(--quiet);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
}

.entry {
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--paper-deep);
  animation: settle 900ms cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

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

.entry a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.entry a:focus-visible {
  outline: 1.5px solid var(--memory-blue);
  outline-offset: 6px;
  border-radius: 3px;
}

.meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--quiet);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
}

.entry .entry-title {
  margin: 0.85rem 0 0;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.entry p {
  margin: 0.6rem 0 0;
  color: #45434a;
  font-size: 0.9375rem;
}

.chips {
  display: flex;
  gap: 0.4rem;
  margin-top: 1.1rem;
}

.chip {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  box-shadow: 0 1px 2px rgb(23 23 26 / 0.14);
}

/* record pages: 每条记录自己的一页。回去的路、标题、开头与页尾的小字 */

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.3rem;
  margin: 0 0 2.5rem;
}

.page-nav a {
  color: var(--quiet);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 220ms ease, border-color 220ms ease;
}

.page-nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--paper-deep);
}

.page-nav a:focus-visible {
  outline: 1.5px solid var(--memory-blue);
  outline-offset: 4px;
  border-radius: 3px;
}

.page-head {
  display: block;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--paper-deep);
}

.page-head h1 {
  margin: 0.9rem 0 0;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.page-head .meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lede {
  margin: 0.85rem 0 0;
  color: var(--quiet);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-note {
  margin: 1.75rem 0 0;
  color: var(--quiet);
  font-size: 0.8125rem;
  line-height: 1.75;
}

/* quiet marks: 一次没东西可留的记录。很轻，不占分量，也不跟条目抢注意力 */

.entry.quiet {
  padding: 1.5rem 0;
  border-bottom: 0;
}

.entry.quiet .meta {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.entry.quiet .quiet-line {
  margin: 0.45rem 0 0;
  color: var(--quiet);
  font-size: 0.9375rem;
}

/* 同一天的轻记录挨在一起时，日期只出现一次 */

.entry.quiet.same-day {
  padding-top: 0.35rem;
}

.entry.quiet.same-day .quiet-line {
  margin-top: 0;
}

/* footer */

footer {
  margin-top: 4.5rem;
  color: var(--quiet);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

@keyframes settle {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .entry { animation: none; }
  nav a,
  .page-nav a { transition: none; }
}

@media (max-width: 30rem) {
  body { font-size: 16px; }
  header { gap: 1.1rem; }
  .bottle { width: 26px; }
  nav { gap: 0.8rem; }
  nav a { letter-spacing: 0.08em; }
}