:root {
  --paper: #f7f4ed;
  --paper-deep: #efebe1;
  --ink: #2f3b34;
  --ink-soft: #5d6a60;
  --ink-faint: #8b9188;
  --line: #d9d6cb;
  --ochre: #a8795a;
  --ochre-soft: #f1e8dc;
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", "Source Han Serif SC", "Georgia", serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(255,255,255,0.72) 0, rgba(255,255,255,0) 42%),
    radial-gradient(circle at 82% 68%, rgba(214,208,190,0.20) 0, rgba(214,208,190,0) 46%),
    repeating-linear-gradient(96deg, rgba(120,116,100,0.014) 0 1px, rgba(120,116,100,0) 1px 5px);
}

.paper {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 30px 80px;
}

a { color: var(--ink-soft); text-decoration: none; }
a:hover { color: var(--ochre); }

/* ---------- masthead ---------- */
.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 14px; }
.brand-name {
  font-size: 30px;
  letter-spacing: 0.22em;
  font-weight: 400;
  color: var(--ink);
}
.brand-sub {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}
.today {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  white-space: nowrap;
}

/* ---------- intro ---------- */
.intro { padding: 68px 0 42px; text-align: center; }
.lede {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--ink);
}
.lede-sub {
  margin: 12px 0 0;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

/* ---------- window ---------- */
.scene-block { margin: 0 0 46px; }
.window {
  position: relative;
  height: 268px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 3px;
  box-shadow: 0 14px 40px -28px rgba(47,59,52,0.5), inset 0 0 44px rgba(255,255,255,0.55);
}
.scene { display: block; width: 100%; height: 100%; }
.window-light {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(112deg, rgba(255,255,255,0.30) 0%, rgba(255,255,255,0) 38%, rgba(255,255,255,0) 72%, rgba(255,255,255,0.16) 100%);
}
.cloud-a { animation: drift 118s linear infinite; }
.cloud-b { animation: drift 166s linear infinite reverse; }
.bamboo { transform-origin: 748px 300px; animation: sway 14s ease-in-out infinite; }
@keyframes drift {
  from { transform: translateX(-190px); }
  to   { transform: translateX(860px); }
}
@keyframes sway {
  0%, 100% { transform: rotate(-1.2deg); }
  50%      { transform: rotate(1.4deg); }
}

.verse { margin: 34px 0 0; text-align: center; }
.verse-text {
  margin: 0;
  font-size: 23px;
  line-height: 2;
  letter-spacing: 0.10em;
  color: var(--ink);
}
.verse-from {
  margin: 12px 0 0;
  font-size: 13px;
  letter-spacing: 0.10em;
  color: var(--ink-faint);
}
.verse-note {
  margin: 16px 0 0;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #a3a79e;
}

/* ---------- entries ---------- */
.entries {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 30px;
  padding: 26px 0 46px;
  border-bottom: 1px solid var(--line);
}
.entries a {
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.6s ease, color 0.6s ease;
}
.entries a:hover { border-bottom-color: var(--ochre); color: var(--ochre); }

/* ---------- blocks ---------- */
.block { padding: 58px 0 10px; scroll-margin-top: 24px; }
.block h2, .help h2 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--ink);
}
.hint {
  margin: 0 0 30px;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}

/* ---------- breathe ---------- */
.breath-stage {
  display: flex;
  justify-content: center;
  padding: 18px 0 34px;
}
.breath-ring {
  width: 172px;
  height: 172px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(93,106,96,0.42);
  background: radial-gradient(circle at 50% 45%, rgba(255,255,255,0.82) 0%, rgba(206,216,205,0.30) 62%, rgba(168,183,169,0.10) 100%);
  box-shadow: 0 0 46px rgba(143,160,149,0.20), inset 0 0 26px rgba(255,255,255,0.6);
  animation: breathe 12s ease-in-out infinite;
}
.breath-ring span {
  font-size: 15px;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
}
@keyframes breathe {
  0%   { transform: scale(0.84); opacity: 0.62; }
  33%  { transform: scale(1.10); opacity: 1; }
  50%  { transform: scale(1.10); opacity: 1; }
  100% { transform: scale(0.84); opacity: 0.62; }
}
.timer-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.timer-text {
  font-size: 15px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  min-width: 62px;
}
.end-note {
  margin: 24px 0 0;
  text-align: center;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.btn {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 10px 26px;
  cursor: pointer;
  transition: border-color 0.5s ease, color 0.5s ease, background-color 0.5s ease;
}
.btn:hover:not(:disabled) { border-color: var(--ochre); color: var(--ochre); background: rgba(168,121,90,0.04); }
.btn:disabled { opacity: 0.38; cursor: default; }
.btn-quiet { border-color: transparent; color: var(--ink-faint); }

/* ---------- let go ---------- */
.write-box { transition: opacity 1.8s ease, filter 1.8s ease, transform 1.8s ease; }
.write-box.dissolve {
  opacity: 0;
  filter: blur(14px);
  transform: scale(1.03) translateY(-10px);
  pointer-events: none;
}
#note {
  display: block;
  width: 100%;
  min-height: 132px;
  resize: vertical;
  padding: 18px 20px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: rgba(255,255,255,0.46);
  border: 1px solid var(--line);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.5s ease, background-color 0.5s ease;
}
#note::placeholder { color: #b3b6ad; }
#note:focus { border-color: #b7bdb2; background: rgba(255,255,255,0.66); }
.write-actions { display: flex; justify-content: flex-end; margin-top: 16px; }

.released { text-align: center; padding: 20px 0 8px; }
.released p { margin: 0 0 18px; font-size: 17px; letter-spacing: 0.12em; color: var(--ink-soft); }
.ink {
  width: 86px;
  height: 86px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(64,84,74,0.30) 0%, rgba(64,84,74,0.10) 52%, rgba(64,84,74,0) 72%);
  animation: inkSpread 2.4s ease-out forwards;
}
@keyframes inkSpread {
  from { transform: scale(0.25); opacity: 0.9; }
  to   { transform: scale(3.4); opacity: 0; }
}

.privacy {
  margin: 28px 0 0;
  padding: 18px 22px;
  font-size: 13px;
  line-height: 2;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  background: rgba(255,255,255,0.40);
  border-left: 2px solid #cfd4ca;
}
.privacy strong { font-weight: 400; color: var(--ink); letter-spacing: 0.10em; }

/* ---------- small things ---------- */
.small-list { list-style: none; margin: 0; padding: 0; }
.small-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 15px 2px;
  border-bottom: 1px solid rgba(217,214,203,0.7);
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}
.small-list li::before {
  content: "";
  flex: 0 0 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #b6bdb1;
  transform: translateY(-3px);
}

/* ---------- help ---------- */
.help {
  margin: 72px 0 0;
  padding: 34px 34px 30px;
  background: var(--ochre-soft);
  border-radius: 3px;
}
.help h2 { font-size: 19px; }
.help > p { margin: 0 0 20px; font-size: 14px; color: var(--ink-soft); letter-spacing: 0.04em; }
.hotlines { list-style: none; margin: 0 0 22px; padding: 0; }
.hotlines li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  padding: 9px 0;
  border-bottom: 1px solid rgba(168,121,90,0.16);
}
.hot-num {
  font-size: 24px;
  letter-spacing: 0.10em;
  color: var(--ochre);
  font-variant-numeric: tabular-nums;
  min-width: 82px;
}
.hot-desc { font-size: 14px; color: var(--ink-soft); letter-spacing: 0.04em; }
.help-note { margin: 0 !important; font-size: 12px !important; color: #947a66 !important; line-height: 1.9; }

/* ---------- footer ---------- */
.footer { margin-top: 68px; padding-top: 26px; border-top: 1px solid var(--line); }
.about { font-size: 14px; color: var(--ink-soft); }
.about summary {
  cursor: pointer;
  list-style: none;
  letter-spacing: 0.10em;
  color: var(--ink-faint);
  padding: 6px 0;
}
.about summary::-webkit-details-marker { display: none; }
.about summary::before { content: "○ "; color: #b6bdb1; }
.about[open] summary::before { content: "● "; }
.about summary:hover { color: var(--ochre); }
.about-body {
  padding: 20px 4px 4px;
  font-size: 13px;
  line-height: 2.05;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.about-body p { margin: 0 0 18px; }
.about-body strong { font-weight: 400; color: var(--ink); letter-spacing: 0.08em; }
.about-body ul { margin: -8px 0 18px; padding-left: 20px; }
.about-body li { margin-bottom: 10px; }
.foot-line {
  margin: 30px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  text-align: center;
  line-height: 2.2;
}
.foot-line .dot { margin: 0 10px; color: #c6c2b6; }

/* ---------- responsive ---------- */
@media (max-width: 600px) {
  .paper { padding: 36px 20px 60px; }
  .masthead { flex-direction: column; gap: 6px; align-items: flex-start; }
  .brand-name { font-size: 26px; }
  .intro { padding: 48px 0 32px; }
  .lede { font-size: 20px; }
  .window { height: 200px; }
  .verse-text { font-size: 19px; }
  .block { padding: 46px 0 8px; }
  .breath-ring { width: 148px; height: 148px; }
  .help { padding: 26px 20px 24px; }
  .hot-num { min-width: 70px; font-size: 21px; }
  .foot-line span:last-child { display: block; }
  .foot-line .dot { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cloud-a, .cloud-b, .bamboo, .breath-ring, .ink { animation: none !important; }
  .breath-ring { transform: scale(1); opacity: 1; }
  .write-box { transition: opacity 0.2s ease; }
}