:root {
  --blue: #002fa7;
  --blue-2: #0a58ff;
  --ink: #162033;
  --muted: #657189;
  --line: #dbe1ee;
  --paper: #f4f7fb;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(0, 47, 167, 0.13);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(0, 47, 167, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(0, 47, 167, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
  font-family:
    "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

:focus-visible {
  outline: 3px solid rgba(10, 88, 255, 0.72);
  outline-offset: 4px;
}

button,
a,
.flip-card {
  cursor: pointer;
}

.liquid-ether {
  --ether-x: 50%;
  --ether-y: 48%;
  --ether-x-soft: 52%;
  --ether-y-soft: 42%;
  --ether-scale: 1;
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.62;
  filter: saturate(1.08);
}

.liquid-ether::before,
.liquid-ether::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle 58px at var(--ether-x) var(--ether-y),
      rgba(0, 47, 167, 0.34) 0,
      rgba(10, 88, 255, 0.55) 32px,
      rgba(0, 47, 167, 0.10) 48px,
      transparent 62px
    ),
    radial-gradient(
      circle 86px at var(--ether-x-soft) var(--ether-y-soft),
      rgba(0, 47, 167, 0.16) 0,
      rgba(10, 88, 255, 0.10) 44px,
      transparent 92px
    ),
    linear-gradient(120deg, rgba(255, 255, 255, 0.12), rgba(0, 47, 167, 0.035));
  transform: scale(var(--ether-scale));
  transition: transform 220ms ease-out;
}

.liquid-ether::before {
  filter: blur(14px);
  animation: ether-breathe 11s ease-in-out infinite alternate;
}

.liquid-ether::after {
  mix-blend-mode: soft-light;
  opacity: 0.64;
  filter: blur(24px);
  transform: scale(calc(var(--ether-scale) + 0.03)) rotate(8deg);
  animation: ether-drift 17s ease-in-out infinite alternate;
}

.site-nav {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 6px;
  width: min(92vw, 940px);
  padding: 8px;
  border: 1px solid rgba(219, 225, 238, 0.8);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 18px 48px rgba(22, 32, 51, 0.08);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: fit-content;
  padding: 8px 14px 8px 10px;
  color: var(--blue);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 55px;
  height: 35px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--blue);
  font-size: 16px;
}

.nav-links {
  display: flex;
  justify-content: flex-end;
  gap: 2px;
  width: 100%;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--blue);
  background: rgba(0, 47, 167, 0.08);
}

main {
  position: relative;
  z-index: 1;
}

section {
  scroll-margin-top: 92px;
}

.hero {
  position: relative;
  display: grid;
  min-height: 92vh;
  padding: 132px 6vw 62px;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 36%, rgba(10, 88, 255, 0.18), transparent 28%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.72), rgba(244, 247, 251, 0.58));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: clamp(36px, 7vw, 96px);
  width: min(1160px, 100%);
  margin: 0 auto;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--blue);
}

h1 {
  max-width: 790px;
  margin: 12px 0 18px;
  color: var(--ink);
  font-size: clamp(48px, 8vw, 80px);
  line-height: 1.2;
  letter-spacing: 0;
}

.role {
  display: block;
  color: var(--blue);
  font-size: clamp(28px, 4vw, 52px);
}

.shiny-text {
  display: inline-block;
  background-image: linear-gradient(
    120deg,
    currentColor 0%,
    currentColor 35%,
    color-mix(in srgb, currentColor 14%, var(--white)) 50%,
    currentColor 65%,
    currentColor 100%
  );
  background-size: 200% auto;
  background-position: 150% center;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shiny-text 2.6s linear infinite;
}

.role.shiny-text {
  display: block;
  animation-delay: 0.25s;
}

@keyframes shiny-text {
  0% {
    background-position: 150% center;
  }

  78%,
  100% {
    background-position: -50% center;
  }
}

.positioning {
  max-width: 690px;
  margin: 0;
  color: #33405a;
  font-size: clamp(18px, 2.1vw, 25px);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 34px;
  padding: 0;
  list-style: none;
}

.chip {
  border: 1px solid rgba(0, 47, 167, 0.16);
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  font-weight: 800;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  font-weight: 850;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button.primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 16px 36px rgba(0, 47, 167, 0.22);
}

.hero .hero-cta {
  gap: 8px;
  min-height: 42px;
  padding: 8px 0;
  border-color: transparent;
  border-radius: 999px;
  color: var(--blue);
  background:
    linear-gradient(currentColor, currentColor) left bottom / 56% 1px no-repeat,
    transparent;
  box-shadow: none;
  transition:
    transform 180ms ease,
    background-size 180ms ease;
}

.hero .hero-cta:hover {
  transform: translateY(-2px);
  background-size: 100% 1px, auto;
  box-shadow: none;
}

.cta-arrow {
  font-size: 1.05em;
  line-height: 1;
  transition: transform 180ms ease;
}

.hero .hero-cta:hover .cta-arrow {
  transform: translateX(4px);
}

.button.secondary {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.64);
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 44px rgba(0, 47, 167, 0.22);
}

.hero-visual {
  position: relative;
  min-height: 470px;
}

.avatar-card {
  position: relative;
  width: min(100%, 410px);
  margin-left: auto;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.46);
  box-shadow: 0 14px 34px rgba(0, 47, 167, 0.08);
  backdrop-filter: blur(12px);
}

.avatar {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(0, 47, 167, 0.98), rgba(10, 88, 255, 0.78)),
    var(--blue);
}

.avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 24%;
}

.avatar::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(0, 47, 167, 0.12);
}

.avatar::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(0, 47, 167, 0.04), rgba(0, 47, 167, 0.12)),
    linear-gradient(90deg, transparent 49%, rgba(255, 255, 255, 0.14) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(255, 255, 255, 0.14) 50%, transparent 51%);
  background-size: 42px 42px;
  opacity: 0.2;
  pointer-events: none;
}

.signal-panel {
  position: absolute;
  right: -40px;
  bottom: -103px;
  width: 268px;
  padding: 18px;
  border: 1px solid rgba(219, 225, 238, 0.72);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 44px rgba(22, 32, 51, 0.12);
}

.signal-title {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.signal-line {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  align-items: center;
  min-height: 22px;
  margin: 8px 0;
  font-size: 12px;
  font-weight: 800;
}

.meter {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7edf8;
}

.meter span {
  display: block;
  width: var(--w);
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.next-hint {
  position: absolute;
  bottom: 22px;
  left: 50%;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  transform: translateX(-50%);
}

.section-wrap {
  width: min(1160px, 88vw);
  margin: 0 auto;
  padding: 82px 0;
}

.section-head {
  display: block;
  margin-bottom: 34px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  color: var(--muted);
  font-size: clamp(32px, 4.6vw, 35px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0;
}

.timeline {
  position: relative;
  display: flex;
  gap: 22px;
  overflow-x: auto;
  overflow-y: visible;
  padding: 18px 8px 42px;
  scroll-padding-left: 2px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.timeline::-webkit-scrollbar {
  height: 8px;
}

.timeline::-webkit-scrollbar-track {
  background: rgba(0, 47, 167, 0.07);
  border-radius: 999px;
}

.timeline::-webkit-scrollbar-thumb {
  background: rgba(0, 47, 167, 0.38);
  border-radius: 999px;
}

.experience-item {
  position: relative;
  display: grid;
  grid-template-rows: 430px 40px;
  gap: 16px;
  flex: 0 0 294px;
  scroll-snap-align: start;
}

.experience-item::before {
  content: "";
  position: absolute;
  top: 456px;
  left: 18px;
  right: -40px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), rgba(0, 47, 167, 0.08));
}

.experience-item:last-child::before {
  right: 50%;
}

.dot {
  position: relative;
  grid-row: 2;
  z-index: 1;
  width: 38px;
  height: 38px;
  border: 8px solid var(--paper);
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 1px rgba(0, 47, 167, 0.2);
}

.dot::before {
  content: attr(data-year);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  transform: translateX(-50%);
}

.flip-card {
  grid-row: 1;
  min-height: 430px;
  perspective: 1200px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  min-height: 430px;
  transform-style: preserve-3d;
  transition: transform 520ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.flip-card:hover .flip-card-inner,
.flip-card.is-flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 14px;
  border: 1px solid rgba(219, 225, 238, 0.9);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 22px 64px rgba(22, 32, 51, 0.12);
  backface-visibility: hidden;
}

.card-back {
  justify-content: center;
  gap: 16px;
  transform: rotateY(180deg);
}

.card-back .tag-row {
  margin-top: 8px;
}

.back-heading h3 {
  margin-top: 2px;
}

.experience-art,
.project-art {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(0, 47, 167, 0.12), rgba(10, 88, 255, 0.02)),
    #eef3fb;
}

.experience-art::before {
  content: attr(data-initial);
  position: absolute;
  inset: auto 12px 10px auto;
  color: rgba(0, 47, 167, 0.16);
  font-size: 42px;
  font-weight: 950;
  line-height: 1;
}

.experience-art {
  flex: 0 0 132px;
  width: 100%;
  margin-bottom: 18px;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.experience-art-aipm {
  background-image:
    linear-gradient(135deg, rgba(0, 47, 167, 0.08), rgba(10, 88, 255, 0.02)),
    url("assets/experience/experience_aipm.JPG");
  background-position: center 31%;
}

.experience-art-zego {
  background-image:
    linear-gradient(135deg, rgba(0, 47, 167, 0.06), rgba(10, 88, 255, 0.01)),
    url("assets/experience/experience_zego.png");
}

.experience-art-kuaishou {
  background-image:
    linear-gradient(135deg, rgba(0, 47, 167, 0.04), rgba(10, 88, 255, 0.01)),
    url("assets/experience/experience_kuaishou.png");
}

.experience-art-zju {
  background-image:
    linear-gradient(135deg, rgba(0, 47, 167, 0.08), rgba(10, 88, 255, 0.02)),
    url("assets/experience/experience_zju.jpg");
  background-position: center 35%;
}

.experience-art-uestc {
  background-image:
    linear-gradient(135deg, rgba(0, 47, 167, 0.08), rgba(10, 88, 255, 0.02)),
    url("assets/experience/experience_uestc.jpg");
  background-position: 43% 35%;
}

.experience-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.experience-copy .tag-row {
  margin-top: auto;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.role-label {
  margin: -2px 0 8px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
}

h3 {
  margin: 8px 0 8px;
  font-size: 23px;
  line-height: 1.2;
}

.summary,
.detail {
  margin: 0;
  color: #46516a;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(0, 47, 167, 0.08);
  font-size: 12px;
  font-weight: 850;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.project-card,
.doc-card,
.tool-card,
.contact-panel {
  border: 1px solid rgba(219, 225, 238, 0.92);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 58px rgba(22, 32, 51, 0.08);
}

.project-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 0.48fr) minmax(0, 0.52fr);
  min-height: 100%;
  border: 2px solid transparent;
  background:
    linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)) padding-box,
    linear-gradient(135deg, rgba(160, 184, 235, 0.62), rgba(219, 225, 238, 0.9)) border-box;
  overflow: hidden;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.project-card:hover {
  background:
    linear-gradient(rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.94)) padding-box,
    linear-gradient(135deg, #0062ff 0%, #26d6ff 46%, #7b3cff 100%) border-box;
  box-shadow:
    0 26px 80px rgba(0, 47, 167, 0.16),
    0 0 0 4px rgba(38, 214, 255, 0.16);
  transform: translateY(-5px);
}

.project-art {
  position: relative;
  height: clamp(210px, 18vw, 248px);
  border-radius: 0;
  overflow: hidden;
  background: #eef5ff;
}

.project-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  box-sizing: border-box;
}

.project-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: 18px 22px;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.project-card h3 {
  margin: 8px 0;
}

.project-link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: 14px;
  padding-top: 0;
  color: var(--blue);
  font-weight: 900;
}

.split-grid,
.cookbook-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.42fr) minmax(0, 0.58fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
}

.cookbook-intro {
  position: sticky;
  top: 112px;
}

#cookbook.is-open .cookbook-intro {
  position: static;
  grid-column: 1 / -1;
}

#cookbook.is-open .doc-list {
  display: none;
}

.book-cover {
  position: relative;
  display: flex;
  width: min(100%, 360px);
  min-height: 440px;
  flex-direction: column;
  justify-content: flex-end;
  margin-top: 30px;
  padding: 42px 34px;
  overflow: visible;
  border: 1px solid rgba(0, 47, 167, 0.34);
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.14), transparent 9%),
    linear-gradient(135deg, #002fa7, #083ec4);
  box-shadow: 0 28px 70px rgba(0, 47, 167, 0.22);
  text-align: left;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.book-cover::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 22px;
  width: 1px;
  background: rgba(255, 255, 255, 0.22);
}

.book-cover::after {
  content: "> 点击展开";
  position: absolute;
  top: 50%;
  right: 22px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 999px;
  padding: 8px 14px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
  transform: translateY(-50%);
  transition:
    background 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.book-cover:hover {
  box-shadow: 0 34px 86px rgba(0, 47, 167, 0.3);
  transform: translateY(-4px) rotate(-1deg);
}

.book-cover:hover::after {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: none;
  transform: translate(2px, -50%);
}

.book-title {
  max-width: 230px;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 29px;
  font-weight: 700;
  line-height: 1.25;
}

.book-subtitle {
  margin-bottom: auto;
  color: rgba(255, 255, 255, 0.56);
  font-size: 16px;
  font-weight: 700;
}

.book-meta {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.34);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.book-name {
  font-size: 24px;
  font-weight: 900;
}

.doc-list,
.tool-list {
  display: grid;
  gap: 12px;
}

.doc-card,
.tool-card {
  position: relative;
  display: grid;
  align-items: center;
  padding: 16px;
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.doc-card {
  grid-template-columns: 34px 40px minmax(0, 1fr) 38px;
  gap: 14px;
}

.doc-card:hover,
.doc-card.is-active,
.tool-card:hover {
  border-color: rgba(0, 47, 167, 0.28);
  transform: translateY(-3px);
}

.doc-card.is-active {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 22px 68px rgba(0, 47, 167, 0.11);
}

.doc-card h3,
.tool-card h3 {
  margin-top: 0;
  font-size: 19px;
}

.doc-card p,
.tool-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.doc-index {
  color: rgba(0, 47, 167, 0.42);
  font-size: 13px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.doc-icon {
  position: relative;
  display: block;
  width: 34px;
  height: 40px;
  border: 1px solid rgba(0, 47, 167, 0.18);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(0, 47, 167, 0.08), rgba(255, 255, 255, 0.88));
}

.doc-icon::before,
.doc-icon::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  border-radius: 999px;
  background: rgba(0, 47, 167, 0.32);
}

.doc-icon::before {
  top: 14px;
  box-shadow: 0 7px 0 rgba(0, 47, 167, 0.22);
}

.doc-icon::after {
  bottom: 8px;
  right: 14px;
}

.doc-content {
  min-width: 0;
}

.jump-icon {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue);
  background: rgba(0, 47, 167, 0.08);
  font-size: 15px;
  font-weight: 900;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.doc-card .jump-icon {
  background: var(--white);
}

.doc-card:hover .jump-icon,
.tool-card:hover .jump-icon {
  color: var(--white);
  background: var(--blue);
  transform: translate(2px, -2px);
}

.book-reader {
  position: relative;
  display: none;
  margin-top: 30px;
}

#cookbook.is-open .book-reader {
  display: block;
}

#cookbook.is-open .book-cover {
  display: none;
}

.book-spread {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 520px;
  overflow: hidden;
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 34px 110px rgba(22, 32, 51, 0.18);
}

.book-page {
  position: relative;
  padding: clamp(26px, 4vw, 48px);
  background:
    linear-gradient(90deg, rgba(0, 47, 167, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(0, 47, 167, 0.03) 1px, transparent 1px),
    #ffffff;
  background-size: 36px 36px;
}

.book-page:first-child {
  border-right: 1px solid rgba(22, 32, 51, 0.08);
  box-shadow: inset -20px 0 28px rgba(22, 32, 51, 0.06);
}

.book-page.flow-page {
  box-shadow: inset 20px 0 28px rgba(22, 32, 51, 0.05);
}

.doc-page {
  display: none;
}

.doc-page.is-active {
  display: block;
}

.reader-index {
  margin: 0 0 12px;
  color: rgba(0, 47, 167, 0.42);
  font-size: 14px;
  font-weight: 900;
}

.book-page h3 {
  margin-top: 0;
  font-size: clamp(24px, 3vw, 36px);
}

.book-page p {
  color: var(--muted);
}

.reader-link {
  display: inline-flex;
  margin-top: 26px;
  min-height: 44px;
  align-items: center;
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--white);
  background: var(--blue);
  font-weight: 900;
}

.flow-page {
  display: flex;
  min-width: 0;
}

.flow-page-content {
  display: none;
  width: 100%;
  min-width: 0;
}

.flow-page-content.is-active {
  display: flex;
  flex-direction: column;
}

.flow-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  color: var(--blue);
}

.flow-title-icon {
  position: relative;
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(0, 47, 167, 0.22);
  border-radius: 10px;
  background:
    linear-gradient(135deg, rgba(0, 47, 167, 0.12), rgba(255, 255, 255, 0.92)),
    var(--white);
}

.flow-title-icon::before,
.flow-title-icon::after {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  height: 2px;
  border-radius: 999px;
  background: rgba(0, 47, 167, 0.42);
}

.flow-title-icon::before {
  top: 13px;
  box-shadow: 0 7px 0 rgba(0, 47, 167, 0.28);
}

.flow-title-icon::after {
  bottom: 8px;
  right: 16px;
}

.flow-image {
  display: block;
  width: 100%;
  max-height: clamp(320px, 48vw, 640px);
  flex: 1;
  object-fit: contain;
  object-position: center top;
  border: 1px solid rgba(0, 47, 167, 0.12);
  border-radius: 10px;
  background: var(--white);
  box-shadow: 0 18px 42px rgba(22, 32, 51, 0.08);
}

.book-nav {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 44px rgba(22, 32, 51, 0.12);
  font-size: 30px;
  transform: translateY(-50%);
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.book-nav:hover {
  color: var(--white);
  background: var(--blue);
  transform: translateY(-50%) scale(1.04);
}

.book-nav.prev {
  left: -28px;
}

.book-nav.next {
  right: -28px;
}

.tool-card {
  grid-template-columns: minmax(160px, 0.22fr) minmax(250px, 0.38fr) minmax(0, 1fr) 34px;
  gap: 16px;
  min-height: 72px;
}

.tool-card .tag-row {
  margin-top: 0;
}

.tool-card h3 {
  margin: 0;
}

.tool-card strong {
  color: var(--ink);
}

.contact {
  position: relative;
  overflow: hidden;
}

.contact-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100vw;
  min-height: 320px;
  margin-right: calc(50% - 50vw);
  margin-left: calc(50% - 50vw);
  padding: clamp(28px, 5vw, 54px);
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  text-align: center;
  overflow: hidden;
}

.galaxy-container {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
}

.galaxy-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.contact-copy,
.contact-actions {
  z-index: 1;
}

.contact-copy {
  position: relative;
}

.contact-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 4px;
  border: 0;
  color: var(--blue);
  background:
    linear-gradient(currentColor, currentColor) left bottom / 0 1px no-repeat,
    transparent;
  font-weight: 600;
  transition:
    color 180ms ease,
    transform 180ms ease,
    background-size 180ms ease;
}

.contact-link:hover {
  color: var(--blue-2);
  background-size: 100% 1px, auto;
  transform: translateY(-2px);
}

.footer-note {
  margin: 22px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes breathe {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-22px, -16px, 0) scale(1.08);
  }
}

@media (max-width: 900px) {
  .liquid-ether {
    opacity: 0.48;
  }

  .site-nav {
    align-items: flex-start;
    border-radius: 22px;
  }

  .brand {
    padding-right: 8px;
  }

  .nav-links {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-links a {
    white-space: nowrap;
  }

  .hero {
    min-height: 94vh;
    padding-top: 124px;
  }

  .hero-inner,
  .split-grid,
  .cookbook-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 360px;
  }

  .avatar-card {
    margin: 0;
  }

  .signal-panel {
    right: 0;
    bottom: -24px;
  }

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

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

  .project-art {
    height: auto;
    aspect-ratio: 3 / 2;
    min-height: auto;
  }

  .experience-item {
    flex-basis: 300px;
  }

  .cookbook-intro {
    position: static;
  }

  .book-cover {
    width: 100%;
    min-height: 320px;
    margin-top: 20px;
    overflow: hidden;
  }

  .book-cover::after {
    top: 24px;
    right: 24px;
    border-color: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.76);
    background: transparent;
    box-shadow: none;
    font-size: 12px;
    transform: none;
  }

  .book-cover:hover::after {
    background: transparent;
    box-shadow: none;
    transform: none;
  }

  .book-spread {
    grid-template-columns: 1fr;
  }

  .book-page:first-child {
    border-right: 0;
    border-bottom: 1px solid rgba(22, 32, 51, 0.08);
    box-shadow: inset 0 -18px 24px rgba(22, 32, 51, 0.05);
  }

  .book-nav {
    top: auto;
    bottom: -28px;
    transform: none;
  }

  .book-nav:hover {
    transform: scale(1.04);
  }

  .book-nav.prev {
    left: calc(50% - 68px);
  }

  .book-nav.next {
    right: calc(50% - 68px);
  }

  .tool-card {
    grid-template-columns: minmax(140px, 0.24fr) minmax(0, 1fr) 34px;
  }

  .tool-card p {
    grid-column: 1 / -1;
  }

  .tool-card .jump-icon {
    grid-column: 3;
    grid-row: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .liquid-ether::before,
  .liquid-ether::after {
    animation: none;
  }

  .galaxy-container {
    display: none;
  }
}

@keyframes ether-breathe {
  from {
    transform: scale(var(--ether-scale)) rotate(-3deg);
  }

  to {
    transform: scale(calc(var(--ether-scale) + 0.05)) rotate(4deg);
  }
}

@keyframes ether-drift {
  from {
    transform: translate3d(-2%, 1%, 0) scale(calc(var(--ether-scale) + 0.04)) rotate(6deg);
  }

  to {
    transform: translate3d(2%, -2%, 0) scale(calc(var(--ether-scale) + 0.12)) rotate(-7deg);
  }
}

@media (max-width: 640px) {
  .site-nav {
    top: 10px;
    width: calc(100vw - 20px);
  }

  .brand span:last-child {
    display: none;
  }

  .hero {
    padding-right: 20px;
    padding-left: 20px;
  }

  .section-wrap {
    width: calc(100vw - 36px);
    padding: 64px 0;
  }

  .timeline {
    gap: 14px;
    padding-top: 28px;
  }

  .doc-card,
  .tool-card {
    padding: 14px;
  }

  .project-body {
    padding: 16px;
  }

  .book-reader {
    margin-top: 30px;
    padding-bottom: 34px;
  }

  .book-page {
    padding: 22px;
  }

  .flow-title {
    align-items: flex-start;
    font-size: 22px;
  }

  .flow-image {
    max-height: 68vh;
  }

  .doc-card {
    grid-template-columns: 30px minmax(0, 1fr) 34px;
  }

  .doc-icon {
    display: none;
  }

  .tool-card {
    grid-template-columns: minmax(0, 1fr) 34px;
    gap: 10px;
  }

  .tool-card .tag-row,
  .tool-card p {
    grid-column: 1 / -1;
  }

  .tool-card .jump-icon {
    grid-column: 2;
    grid-row: 1;
  }

  .dot {
    width: 28px;
    height: 28px;
    border-width: 6px;
  }

  .experience-item {
    grid-template-rows: 430px 34px;
    flex-basis: min(292px, calc(100vw - 48px));
  }

  .flip-card,
  .flip-card-inner,
  .card-face {
    min-height: 430px;
  }

  .signal-panel {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 14px;
  }

  .cta-row .button {
    width: 100%;
  }

  .hero .cta-row .button {
    width: auto;
  }
}