:root {
  --page-bg: #eee6da;
  --paper: #f8f2e9;
  --paper-deep: #efe3d3;
  --ink: #2d2a26;
  --ink-soft: #5d564d;
  --muted: #82786c;
  --red: #a82421;
  --red-deep: #841b1b;
  --red-faded: rgba(168, 36, 33, 0.12);
  --gold: #b79255;
  --gold-soft: rgba(183, 146, 85, 0.28);
  --line: rgba(84, 62, 40, 0.16);
  --shadow: 0 18px 48px rgba(58, 40, 24, 0.16);
  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --radius: 8px;
  --content-pad: clamp(20px, 5.6vw, 28px);
}

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

html {
  min-width: 320px;
  background: var(--page-bg);
  color: var(--ink);
  overflow-x: hidden;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  font-family: var(--sans);
  background:
    radial-gradient(circle at top, rgba(255, 252, 245, 0.72), transparent 42vh),
    linear-gradient(180deg, #f3eadf 0%, #e8ded0 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.35;
  background-image:
    linear-gradient(90deg, rgba(104, 75, 44, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(104, 75, 44, 0.025) 1px, transparent 1px);
  background-size: 19px 19px, 23px 23px;
}

p,
h1,
h2 {
  margin: 0;
}

.wechat-share-cover {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0.01;
  pointer-events: none;
  transform: translateX(-9999px);
}

ul {
  padding: 0;
  margin: 0;
}

.page-shell {
  width: 100%;
  max-width: 480px;
  min-height: 100dvh;
  padding:
    max(14px, env(safe-area-inset-top))
    clamp(10px, 3vw, 18px)
    max(28px, calc(env(safe-area-inset-bottom) + 22px));
  margin: 0 auto;
}

.document-sheet {
  position: relative;
  width: 100%;
  min-height: calc(100dvh - 34px);
  padding: clamp(28px, 7vw, 38px) var(--content-pad) 34px;
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 0, rgba(183, 146, 85, 0.18) 50%, transparent 100%) top / 100% 1px no-repeat,
    radial-gradient(circle at 20% 14%, rgba(255, 255, 255, 0.72), transparent 22%),
    linear-gradient(180deg, #fbf6ed 0%, var(--paper) 42%, #f5ecdf 100%);
  border: 1px solid rgba(136, 99, 58, 0.22);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  animation: sheetEnter 640ms ease-out both;
}

.document-sheet::before {
  position: absolute;
  inset: 9px;
  z-index: 0;
  pointer-events: none;
  content: "";
  border: 1px solid rgba(183, 146, 85, 0.34);
  border-radius: 5px;
}

.document-sheet::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
  opacity: 0.28;
  background-image:
    radial-gradient(rgba(78, 52, 29, 0.18) 0.55px, transparent 0.65px),
    radial-gradient(rgba(255, 255, 255, 0.56) 0.7px, transparent 0.8px);
  background-position: 0 0, 7px 11px;
  background-size: 11px 13px, 17px 19px;
  mix-blend-mode: multiply;
}

.document-header,
.preface,
.resolution-stack,
.formal-block,
.birthday-note,
.signature-block {
  position: relative;
  z-index: 1;
}

.document-header {
  padding-bottom: 20px;
  text-align: center;
  border-bottom: 2px solid var(--red);
}

.document-header::after {
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 6px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.redhead-label {
  margin-bottom: 18px;
  color: var(--red);
  font-family: var(--serif);
  font-size: clamp(22px, 7.2vw, 32px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0;
}

.document-header h1 {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(24px, 7vw, 34px);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: 0;
}

.document-meta {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.document-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 12px;
  color: var(--red-deep);
  font-size: 13px;
  line-height: 1.3;
  background: rgba(168, 36, 33, 0.055);
  border: 1px solid rgba(168, 36, 33, 0.28);
}

.preface {
  padding-top: 28px;
}

.preface p,
.resolution-card p,
.formal-block p,
.birthday-note p {
  color: var(--ink-soft);
  font-size: clamp(15.5px, 4.2vw, 17px);
  line-height: 1.84;
  text-align: left;
}

.preface p + p,
.resolution-card p + p,
.formal-block p + p,
.birthday-note p + p {
  margin-top: 12px;
}

.resolution-stack {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}

.resolution-card {
  position: relative;
  padding: 20px 0 20px 18px;
  border-left: 2px solid rgba(168, 36, 33, 0.72);
}

.resolution-card::before {
  position: absolute;
  top: 0;
  left: -2px;
  width: 2px;
  height: 36px;
  content: "";
  background: var(--gold);
}

.resolution-card::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 18px;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--line), transparent);
}

.resolution-card h2,
.birthday-note h2 {
  margin-bottom: 11px;
  color: var(--red-deep);
  font-family: var(--serif);
  font-size: clamp(18px, 5vw, 21px);
  font-weight: 700;
  line-height: 1.35;
}

.duty-list {
  display: grid;
  gap: 9px;
  list-style: none;
}

.duty-list li {
  position: relative;
  min-height: 30px;
  padding: 5px 0 5px 22px;
  color: var(--ink-soft);
  font-size: clamp(15.5px, 4.1vw, 16.5px);
  line-height: 1.55;
}

.duty-list li::before {
  position: absolute;
  top: 16px;
  left: 4px;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--red);
  border: 1px solid rgba(255, 255, 255, 0.65);
  transform: rotate(45deg);
}

.duty-list--new li::before {
  background: var(--gold);
}

.formal-block {
  margin-top: 34px;
  padding: 22px 18px 20px;
  background:
    linear-gradient(90deg, rgba(168, 36, 33, 0.08), transparent 38%),
    rgba(255, 250, 241, 0.42);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section-kicker {
  margin-bottom: 10px;
  color: var(--red-deep) !important;
  font-family: var(--serif);
  font-size: clamp(18px, 5vw, 21px) !important;
  font-weight: 700;
  line-height: 1.35 !important;
}

.board-comment {
  border-top-color: rgba(168, 36, 33, 0.34);
}

.effect-block {
  background:
    linear-gradient(180deg, rgba(183, 146, 85, 0.13), transparent 46%),
    rgba(255, 250, 241, 0.46);
}

.emphasis-line {
  padding: 11px 12px;
  color: var(--red-deep) !important;
  font-weight: 700;
  background: rgba(168, 36, 33, 0.07);
  border: 1px solid rgba(168, 36, 33, 0.18);
  border-radius: 4px;
}

.birthday-note {
  margin-top: 38px;
  padding: 24px 0 6px;
  border-top: 1px solid var(--gold-soft);
}

.birthday-note h2 {
  text-align: center;
}

.birthday-note p {
  color: #4b443d;
}

.signature-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px;
  gap: 12px;
  align-items: end;
  min-height: 168px;
  padding-top: 38px;
}

.signature-copy {
  padding-left: 6px;
  color: var(--ink);
  font-family: var(--serif);
  text-align: left;
}

.signature-copy p {
  font-size: clamp(18px, 5vw, 22px);
  font-weight: 700;
  line-height: 1.65;
}

.signature-copy time {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
}

.stamp {
  position: relative;
  display: grid;
  place-items: center;
  width: 124px;
  height: 124px;
  justify-self: end;
  margin-bottom: 4px;
  color: var(--red);
  font-family: var(--serif);
  text-align: center;
  border: 3px solid currentColor;
  border-radius: 50%;
  opacity: 0;
  transform: rotate(-10deg) scale(1.18);
  transform-origin: center;
}

.stamp::before,
.stamp::after {
  position: absolute;
  pointer-events: none;
  content: "";
  border-radius: 50%;
}

.stamp::before {
  inset: 7px;
  border: 1.5px solid currentColor;
}

.stamp::after {
  inset: -3px;
  opacity: 0.24;
  background-image:
    radial-gradient(circle at 20% 30%, transparent 0 2px, currentColor 2.4px 2.9px, transparent 3.4px),
    radial-gradient(circle at 64% 70%, transparent 0 1.6px, currentColor 2px 2.4px, transparent 3px),
    repeating-linear-gradient(12deg, transparent 0 8px, currentColor 8px 9px, transparent 9px 15px);
  mix-blend-mode: multiply;
}

.stamp__top,
.stamp__middle,
.stamp__bottom {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  padding: 0 12px;
  line-height: 1.2;
}

.stamp__top {
  align-self: end;
  padding-top: 21px;
  font-size: 15px;
  font-weight: 700;
}

.stamp__middle {
  color: var(--red-deep);
  font-size: 20px;
  font-weight: 800;
}

.stamp__bottom {
  align-self: start;
  font-size: 13px;
  font-weight: 700;
}

.stamp.is-stamped {
  animation: stampDrop 620ms cubic-bezier(0.18, 0.86, 0.3, 1.18) 160ms both;
}

.reveal {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
}

.reveal.is-visible {
  animation: revealUp 560ms ease-out both;
}

@keyframes sheetEnter {
  from {
    opacity: 0;
    transform: translate3d(0, 12px, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translate3d(0, 16px, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes stampDrop {
  0% {
    opacity: 0;
    transform: rotate(-10deg) scale(1.28) translate3d(8px, -18px, 0);
    filter: blur(1px);
  }

  48% {
    opacity: 0.92;
    transform: rotate(-10deg) scale(0.93) translate3d(0, 4px, 0);
    filter: blur(0);
  }

  70% {
    opacity: 0.82;
    transform: rotate(-10deg) scale(1.03) translate3d(0, -2px, 0);
  }

  100% {
    opacity: 0.86;
    transform: rotate(-10deg) scale(1) translate3d(0, 0, 0);
  }
}

@media (max-width: 374px) {
  .page-shell {
    padding-inline: 8px;
  }

  .document-sheet {
    padding-inline: 19px;
  }

  .signature-block {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .stamp {
    width: 112px;
    height: 112px;
    justify-self: end;
    margin-top: -8px;
  }

  .stamp__top {
    font-size: 14px;
  }

  .stamp__middle {
    font-size: 18px;
  }
}

@media (min-width: 431px) {
  .page-shell {
    max-width: 500px;
    padding-block: 22px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .reveal,
  .stamp {
    opacity: 1;
    transform: none;
  }
}