:root {
  color-scheme: light;
  --paper: #f6efe2;
  --sheet: #fffaf0;
  --sheet-warm: #eadcc6;
  --ink: #251d18;
  --ink-soft: #67584c;
  --oxblood: #7f241e;
  --redwood: #a44236;
  --clay: #c98562;
  --olive: #6f7358;
  --line: rgba(85, 62, 45, 0.18);
  --line-strong: rgba(127, 36, 30, 0.35);
  --shadow: rgba(61, 37, 25, 0.14);
  --body: "Segoe UI", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  --display: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  --mono: "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.65;
  background:
    radial-gradient(circle at 14% 9%, rgba(164, 66, 54, 0.12), transparent 24rem),
    radial-gradient(circle at 88% 16%, rgba(111, 115, 88, 0.14), transparent 22rem),
    linear-gradient(90deg, rgba(85, 62, 45, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(85, 62, 45, 0.03) 1px, transparent 1px),
    var(--paper);
  background-size: auto, auto, 28px 28px, 28px 28px, auto;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.38;
  background-image:
    linear-gradient(115deg, transparent 0 47%, rgba(255, 255, 255, 0.55) 48%, transparent 51%),
    radial-gradient(circle at 20% 30%, rgba(37, 29, 24, 0.055) 0 1px, transparent 1.4px),
    radial-gradient(circle at 80% 70%, rgba(127, 36, 30, 0.05) 0 1px, transparent 1.5px);
  background-size: 100% 100%, 19px 19px, 23px 23px;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(127, 36, 30, 0.52);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 70px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(246, 239, 226, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.brand img {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--sheet);
  box-shadow: 0 5px 18px rgba(127, 36, 30, 0.16);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(12px, 3vw, 28px);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.nav a {
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  color: var(--oxblood);
  border-bottom-color: var(--oxblood);
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.32fr) minmax(270px, 0.68fr);
  align-items: stretch;
  gap: clamp(24px, 5vw, 68px);
  width: min(1180px, calc(100% - clamp(28px, 8vw, 112px)));
  margin: clamp(22px, 4vw, 54px) auto 28px;
  padding: clamp(26px, 5vw, 58px);
  border: 1px solid var(--line);
  border-left: 10px solid var(--oxblood);
  border-radius: 7px;
  background:
    linear-gradient(90deg, rgba(127, 36, 30, 0.08) 0 3px, transparent 3px 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 250, 240, 0.9)),
    var(--sheet);
  box-shadow:
    0 24px 70px var(--shadow),
    0 2px 0 rgba(255, 255, 255, 0.75) inset;
}

.hero::after {
  position: absolute;
  top: 16px;
  right: 18px;
  bottom: 16px;
  width: 22px;
  border-right: 1px solid rgba(127, 36, 30, 0.2);
  border-left: 1px solid rgba(127, 36, 30, 0.1);
  content: "";
  opacity: 0.72;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 760px;
  min-height: 100%;
  padding-block: clamp(12px, 2.5vw, 32px);
}

.kicker {
  margin: 0 0 14px;
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: clamp(0.74rem, 1vw, 0.88rem);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 11.8ch;
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(3.1rem, 7.3vw, 7.35rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 0.95;
  overflow-wrap: normal;
  word-break: normal;
}

h1::first-line {
  color: var(--oxblood);
}

.hero-subtitle {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--oxblood);
  font-family: var(--display);
  font-size: clamp(1.35rem, 1.9vw, 1.95rem);
  font-weight: 700;
  line-height: 1.22;
}

.hero-text {
  max-width: 560px;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 800;
  background: rgba(255, 250, 240, 0.72);
  box-shadow: 0 8px 22px rgba(127, 36, 30, 0.1);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  background: var(--sheet);
  box-shadow: 0 12px 30px rgba(127, 36, 30, 0.15);
}

.button-primary {
  color: var(--sheet);
  background: var(--oxblood);
  border-color: var(--oxblood);
}

.button-primary:hover {
  background: #6f1f1a;
}

.identity-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    linear-gradient(180deg, rgba(234, 220, 198, 0.34), rgba(255, 250, 240, 0.56)),
    var(--sheet);
}

.identity-panel::before {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 3px 7px;
  border-radius: 999px;
  color: var(--sheet);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  content: "ORG CARD";
  background: var(--oxblood);
}

.identity-avatar {
  width: min(100%, 178px);
  height: auto;
  aspect-ratio: 1;
  margin-top: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--sheet);
  object-fit: cover;
  filter: sepia(0.12) saturate(0.92);
}

.identity-section {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(127, 36, 30, 0.16);
  border-radius: 4px;
  background: rgba(255, 250, 240, 0.58);
  font-family: var(--mono);
}

.identity-section strong {
  color: var(--oxblood);
  font-size: 0.7rem;
  letter-spacing: 0;
}

.identity-section > span,
.identity-section > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 30px;
  padding: 7px 9px;
  border-left: 3px solid var(--redwood);
  color: var(--ink-soft);
  font-size: 0.76rem;
  background: rgba(127, 36, 30, 0.05);
  text-decoration: none;
}

.friend-link {
  gap: 10px;
  min-height: 50px;
}

.friend-link img {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(127, 36, 30, 0.2);
  border-radius: 50%;
  object-fit: cover;
}

.friend-link span {
  display: grid;
  min-width: 0;
  margin-right: auto;
  line-height: 1.25;
}

.friend-link b {
  color: var(--ink);
  font-size: 0.78rem;
}

.friend-link small {
  color: var(--ink-soft);
  font-size: 0.68rem;
}

.identity-links a::after {
  flex: 0 0 auto;
  color: var(--muted);
  content: "↗";
}

.identity-links a:hover {
  color: var(--oxblood);
  background: rgba(127, 36, 30, 0.1);
}

.identity-memes {
  margin-top: auto;
}

.readme-section,
.projects-section {
  padding: clamp(46px, 8vw, 96px) clamp(18px, 6vw, 96px);
}

.section-heading {
  display: grid;
  gap: 8px;
  max-width: 1120px;
  margin: 0 auto 26px;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 4.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
}

.readme-body {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(24px, 4.5vw, 54px);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(127, 36, 30, 0.08) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, var(--sheet), #fbf3e4);
  background-size: 34px 100%, auto;
  box-shadow: 0 22px 64px var(--shadow);
}

.readme-body::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: clamp(18px, 3vw, 34px);
  width: 1px;
  content: "";
  background: rgba(127, 36, 30, 0.28);
}

.readme-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 280px);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.readme-body h3,
.readme-body h4,
.readme-body p {
  position: relative;
  z-index: 1;
}

.readme-body h3 {
  max-width: 860px;
  margin: 0 0 24px;
  color: var(--oxblood);
  font-family: var(--display);
  font-size: clamp(1.55rem, 3vw, 2.9rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0;
}

.readme-title-main,
.readme-title-sub {
  display: block;
}

.readme-title-main {
  color: var(--oxblood);
}

.readme-title-sub {
  margin-top: 8px;
  color: var(--ink);
  font-family: var(--body);
  font-size: clamp(1.15rem, 1.9vw, 1.55rem);
  font-weight: 800;
  line-height: 1.28;
}

.readme-body h4 {
  margin: 34px 0 9px;
  color: var(--oxblood);
  font-family: var(--body);
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  font-weight: 800;
  letter-spacing: 0;
}

.readme-body p {
  max-width: 78ch;
  margin: 0;
  color: #3f342c;
  font-size: clamp(1rem, 1.25vw, 1.1rem);
}

.readme-body p + p {
  margin-top: 18px;
}

.chronicle-panel {
  position: sticky;
  top: 96px;
  padding: 16px;
  border: 1px solid rgba(127, 36, 30, 0.18);
  border-radius: 5px;
  background:
    linear-gradient(180deg, rgba(255, 250, 240, 0.88), rgba(234, 220, 198, 0.26)),
    var(--sheet);
  box-shadow: 0 14px 36px rgba(61, 37, 25, 0.08);
}

.chronicle-label {
  margin: 0 0 12px;
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.chronicle-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chronicle-list li {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
  padding: 0 0 12px;
  border-bottom: 1px solid rgba(127, 36, 30, 0.12);
}

.chronicle-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.chronicle-list time {
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.5;
}

.chronicle-list span {
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
}

.project-card {
  position: relative;
  display: grid;
  align-content: start;
  min-height: 232px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background:
    linear-gradient(180deg, rgba(255, 250, 240, 0.92), rgba(241, 229, 209, 0.7)),
    var(--sheet);
  box-shadow: 0 16px 44px rgba(61, 37, 25, 0.1);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.project-card::after {
  position: absolute;
  inset: 12px 12px auto auto;
  width: 34px;
  height: 6px;
  border-top: 1px solid rgba(127, 36, 30, 0.26);
  border-bottom: 1px solid rgba(127, 36, 30, 0.26);
  content: "";
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(127, 36, 30, 0.42);
  box-shadow: 0 22px 56px rgba(61, 37, 25, 0.15);
}

.project-card.featured {
  border-color: rgba(127, 36, 30, 0.42);
  background:
    linear-gradient(135deg, rgba(127, 36, 30, 0.12), rgba(255, 250, 240, 0.86) 42%, rgba(111, 115, 88, 0.08)),
    var(--sheet);
}

.project-lang,
.project-meta {
  color: var(--olive);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.project-card h3 {
  margin: 18px 0 10px;
  color: var(--oxblood);
  font-family: var(--display);
  font-size: clamp(1.42rem, 2.2vw, 2.05rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0;
}

.project-card p {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.project-meta {
  align-self: end;
  margin-top: auto;
  color: var(--redwood);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px clamp(18px, 6vw, 96px);
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.78rem;
  background: rgba(234, 220, 198, 0.42);
}

.site-footer a {
  color: var(--oxblood);
  border-bottom: 1px solid var(--line-strong);
}

@media (max-width: 880px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero::after {
    display: none;
  }

  .identity-panel {
    max-width: 420px;
  }

  .readme-layout {
    grid-template-columns: 1fr;
  }

  .chronicle-panel {
    position: relative;
    top: auto;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 520px) {
  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    width: calc(100% - 28px);
    margin-top: 14px;
    padding: 22px;
    border-left-width: 6px;
  }

  h1 {
    font-size: clamp(2.6rem, 13vw, 3.7rem);
    line-height: 0.98;
  }

  .hero-text {
    margin-top: 16px;
  }

  .hero-actions {
    margin-top: 20px;
    width: 100%;
  }

  .button {
    flex: 1 1 150px;
  }

  .readme-body {
    padding: 20px;
  }

  .readme-body::before {
    display: none;
  }

  .identity-panel {
    display: none;
  }
}

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