:root {
  --paper: #f7f1e8;
  --paper-deep: #efe5d7;
  --card: rgba(255, 250, 243, 0.84);
  --card-strong: rgba(255, 252, 247, 0.94);
  --ink: #172023;
  --muted: #425154;
  --line: rgba(23, 32, 35, 0.16);
  --green: #1c5a50;
  --green-soft: rgba(28, 90, 80, 0.1);
  --warm: #9f6132;
  --warm-soft: rgba(159, 97, 50, 0.14);
  --shadow: 0 24px 70px rgba(36, 45, 45, 0.12);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --content: 1180px;
  --nav-width: 150px;
  --page-max: calc(var(--content) + var(--nav-width) + 28px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 10%, rgba(159, 97, 50, 0.18), transparent 22%),
    radial-gradient(circle at 88% 18%, rgba(28, 90, 80, 0.16), transparent 24%),
    linear-gradient(180deg, var(--paper) 0%, #f4ece1 48%, var(--paper-deep) 100%);
  font: 16px/1.75 "Avenir Next", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

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

a:hover {
  color: var(--green);
}

.page {
  width: min(var(--page-max), calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.content-main {
  width: calc(100% - var(--nav-width) - 28px);
  max-width: var(--content);
}

.topbar-shell {
  position: fixed;
  top: 28px;
  right: max(14px, calc((100vw - min(var(--page-max), calc(100% - 28px))) / 2));
  width: var(--nav-width);
  z-index: 20;
}

.topbar {
  position: static;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 24px;
  background: rgba(255, 250, 243, 0.7);
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 40px rgba(26, 31, 32, 0.08);
}

h2,
h3,
.about-name {
  font-family: "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
}

.nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
}

section[id] {
  scroll-margin-top: 32px;
}

.nav a {
  padding: 9px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.94rem;
  transition: 180ms ease;
}

.nav a:hover {
  background: var(--green-soft);
  color: var(--green);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 42px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.8);
  background:
    linear-gradient(135deg, rgba(255, 252, 246, 0.96), rgba(249, 241, 231, 0.9)),
    #fff;
  box-shadow: var(--shadow);
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto -90px -120px auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 90, 80, 0.18), transparent 68%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: stretch;
}

.hero p {
  margin: 0;
  max-width: none;
  color: var(--muted);
  font-size: 1.04rem;
}

.about-copy {
  display: grid;
  gap: 14px;
}

.about-copy p {
  margin: 0;
}

.about-copy a {
  color: var(--green);
  text-decoration: underline;
  text-decoration-color: rgba(28, 90, 80, 0.3);
  text-underline-offset: 0.12em;
}

.about-copy a:hover {
  color: #154b42;
  text-decoration-color: currentColor;
}

.about-name {
  margin: 0 0 12px;
  font-size: 1.35rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.about-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(23, 32, 35, 0.08);
  transition: 180ms ease;
}

.about-links a:hover {
  color: var(--green);
  border-color: rgba(28, 90, 80, 0.18);
  background: rgba(255, 255, 255, 0.82);
  transform: translateY(-1px);
}

.icon-github svg,
.icon-zhihu svg,
.icon-scholar svg,
.icon-email svg {
  display: block;
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.icon-zhihu text {
  fill: currentColor;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  font-weight: 700;
}

.layout {
  display: block;
  margin-top: 26px;
}

.column {
  display: grid;
  gap: 24px;
}

.section-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.74);
  background: rgba(255, 250, 243, 0.78);
  box-shadow: 0 18px 48px rgba(30, 35, 37, 0.08);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

h2 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.pub-shell {
  display: grid;
  gap: 10px;
}

.pub-group {
  display: grid;
  gap: 18px;
}

.pub-card {
  position: relative;
  padding: 14px 16px 8px 18px;
  border-radius: 16px;
  border: 1px solid rgba(29, 38, 41, 0.08);
  background: rgba(255, 255, 255, 0.82);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.pub-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--green), rgba(28, 90, 80, 0.18));
}

.pub-card:hover {
  border-color: rgba(28, 90, 80, 0.16);
  box-shadow: 0 10px 24px rgba(33, 38, 39, 0.06);
}

.pub-top {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge.venue {
  background: var(--green-soft);
  color: var(--green);
}

.badge.award {
  background: rgba(181, 108, 56, 0.12);
  color: #9a5d31;
  box-shadow: none;
}

.badge.kind {
  background: rgba(29, 38, 41, 0.06);
  color: var(--muted);
}

.pub-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
}

.authors {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.authors .note {
  color: #7b4a88;
  font-weight: 700;
}

.pub-meta-line {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.pub-meta-line a {
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.pub-meta-line a:hover {
  color: var(--green);
  text-decoration: underline;
}

.pub-meta-line a[href*="slides"],
.pub-meta-line a[href*="Slides"] {
  color: #5a6d67;
}

.pub-meta-line a[href*="github.com"] {
  color: #46535e;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  position: relative;
  padding-left: 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 6px rgba(28, 90, 80, 0.12);
}

.timeline-item::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 23px;
  bottom: -14px;
  width: 2px;
  background: rgba(28, 90, 80, 0.16);
}

.timeline-item:last-child::after {
  display: none;
}

.timeline-item strong {
  display: block;
  font-size: 1rem;
}

.timeline-item span,
.timeline-item p,
.simple-list li {
  color: var(--muted);
}

.timeline-item p {
  margin: 6px 0 0;
}

.simple-list {
  margin: 0;
  padding-left: 18px;
}

.simple-list li + li {
  margin-top: 10px;
}

@media (max-width: 1024px) {
  .page {
    padding: 104px 0 56px;
  }

  .content-main {
    width: auto;
    max-width: none;
  }

  .topbar-shell {
    top: 0;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(var(--content), calc(100% - 28px));
    padding-top: 14px;
  }

  .topbar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    border-radius: 999px;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
  }

  .nav a {
    padding: 8px 14px;
    border-radius: 999px;
  }

  section[id] {
    scroll-margin-top: 104px;
  }

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

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }

  .page {
    width: min(100% - 18px, var(--content));
    padding-top: 100px;
    padding-right: 0;
  }

  .topbar-shell {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    width: min(100% - 18px, var(--content));
    padding-top: 10px;
  }

  .topbar {
    border-radius: 28px;
    padding: 14px;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero,
  .section-card {
    padding: 22px;
  }

  .section-head {
    flex-direction: column;
    align-items: start;
  }
}