:root {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-bg-base);
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-bg-base);
  color: var(--color-text-default);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

button,
a {
  color: inherit;
}

a {
  text-decoration: none;
}

.nowrap {
  white-space: nowrap;
}

button {
  font: inherit;
}

.progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: calc(var(--z-sticky) + 1);
  height: 3px;
  pointer-events: none;
}

.progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--color-text-default);
  transform: scaleX(0);
  transform-origin: left;
}

.site-nav {
  position: fixed;
  z-index: var(--z-sticky);
  top: 18px;
  left: 50%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: min(calc(100% - 44px), 1160px);
  min-height: 56px;
  padding: 8px 10px 8px 16px;
  border: 1px solid color-mix(in srgb, var(--color-border-default) 74%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-bg-base) 88%, transparent);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--control-h);
  font-family: var(--font-fraunces);
  font-size: 18px;
  font-weight: var(--fw-semibold);
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 42% 58% 57% 43% / 48% 42% 58% 52%;
  background: var(--color-text-default);
  color: var(--color-action-primary-text);
  font-family: var(--font-fraunces);
  font-style: italic;
}

/* 导航标记换成 Suki 照片：圆形小头像，脸部特写裁切保证小尺寸可辨认 */
.brand-mark.brand-avatar {
  width: 40px;
  height: 40px;
  overflow: hidden;
  border: 1px solid var(--color-border-default);
  border-radius: 50%;
  background: none;
  object-fit: cover;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 42px);
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-h);
  border-bottom: 1px solid transparent;
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  border-color: var(--color-text-default);
  color: var(--color-text-default);
  outline: none;
}

.nav-status {
  justify-self: end;
  min-height: var(--control-h);
  padding-inline: var(--space-3);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  padding: 150px 24px 120px;
}

.hero::before {
  position: absolute;
  top: 30%;
  left: 50%;
  width: min(76vw, 920px);
  aspect-ratio: 1.9;
  border: 1px solid var(--color-border-subtle);
  border-radius: 50%;
  content: "";
  opacity: 0.7;
  transform: translate(-50%, -50%) rotate(-7deg);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(900px, 86vw);
  text-align: center;
}

.hero-kicker,
.hero h1 {
  margin: 0;
  font-size: clamp(24px, 3.05vw, 46px);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-tight);
  line-height: 1.28;
}

.hero h1 {
  text-wrap: balance;
}

.hero-cn {
  width: min(590px, 100%);
  margin: 26px auto 0;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: var(--lh-read);
}

.now-building {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: 42px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.now-building .badge {
  min-height: var(--control-h);
  padding-inline: var(--space-3);
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0;
}

.hero-dot {
  position: absolute;
  z-index: 1;
  width: clamp(24px, 3vw, 42px);
  height: clamp(24px, 3vw, 42px);
  animation: float 8s ease-in-out infinite;
}

.hero-dot::after {
  position: absolute;
  inset: 30%;
  border-radius: 40% 60% 70% 30%;
  background: currentColor;
  content: "";
  transform: rotate(24deg);
}

.dot-one { top: 21%; left: 16%; }
.dot-two { top: 14%; left: 55%; animation-delay: -2s; }
.dot-three { top: 43%; right: 17%; animation-delay: -3.5s; }
.dot-four { top: 61%; left: 45%; animation-delay: -5s; }
.dot-five { top: 50%; left: 12%; animation-delay: -6.5s; }

.hero-scroll {
  position: absolute;
  bottom: 7%;
  left: 50%;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transform: translateX(-50%);
}

.hero-scroll span,
.lab-heading h2 {
  font-family: var(--font-fraunces);
  font-size: clamp(62px, 8vw, 112px);
  font-style: italic;
  font-weight: var(--fw-black);
  letter-spacing: -0.08em;
  line-height: 0.8;
}

.hero-scroll i {
  font-family: var(--font-mono);
  font-size: 14px;
  font-style: normal;
  transition: transform var(--dur-slow) var(--ease-out);
}

.hero-scroll:hover i {
  transform: translateY(6px);
}

.section-shell {
  width: min(calc(100% - 48px), var(--container-shell));
  margin-inline: auto;
}

.work-section,
.about-section,
.experience-section {
  padding: 120px 0;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 80px;
  align-items: end;
  margin-bottom: 72px;
}

.section-kicker {
  margin: 0 0 18px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}

.section-intro h2,
.about-grid h2,
.experience-intro h2,
.contact-lead h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 68px);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-tight);
  line-height: 1.15;
  text-wrap: balance;
}

.section-intro > p,
.lab-heading > p,
.contact-lead > p,
.about-copy > p {
  margin: 0;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: var(--lh-read);
}

.about-section {
  border-top: 1px solid var(--color-border-subtle);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(60px, 10vw, 150px);
}

.about-grid h2 em,
.contact-lead h2 em {
  font-family: var(--font-fraunces);
  font-weight: var(--fw-regular);
}

.principles {
  margin-top: 54px;
  border-top: 2px solid var(--color-border-strong);
}

.principles article {
  display: grid;
  grid-template-columns: 48px 130px 1fr;
  gap: var(--space-4);
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border-default);
}

.principles span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.principles h3,
.principles p {
  margin: 0;
}

.principles h3 {
  font-family: var(--font-fraunces);
  font-size: 22px;
  font-weight: var(--fw-semibold);
}

.principles p {
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: var(--lh-read);
}

.lab-section {
  padding: 130px 0;
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
}

.lab-heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 50px;
  align-items: end;
  margin-bottom: 76px;
}

.lab-heading .section-kicker {
  color: var(--color-text-inverse-muted);
}

.lab-heading h2 {
  margin: 0;
  color: var(--color-text-inverse);
  text-align: center;
}

.lab-heading > p {
  max-width: 420px;
  color: var(--color-text-inverse-muted);
  font-size: 16px;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.lab-card {
  overflow: hidden;
  border-color: var(--color-border-inverse);
  border-radius: var(--radius-card);
}

.lab-card .card__body {
  gap: 10px;
  min-height: 190px;
}

.lab-card .card__kicker,
.lab-card .card__text {
  color: var(--color-text-inverse-muted);
}

.lab-card .card__body > p {
  margin: 0;
  color: var(--color-text-inverse-muted);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: var(--lh-read);
}

.lab-art {
  position: relative;
  display: grid;
  min-height: 310px;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-inverse);
  background: var(--color-bg-inverse-raised);
}

.art-lifeos span {
  position: absolute;
  top: 30px;
  left: 30px;
  color: var(--color-text-inverse-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--ls-label);
}

.art-lifeos strong {
  font-family: var(--font-fraunces);
  font-size: 56px;
  font-style: italic;
}

.art-lifeos i {
  position: absolute;
  right: 14%;
  bottom: 14%;
  width: 36%;
  height: 36%;
  border: 1px solid var(--color-border-inverse);
  border-radius: 50%;
  box-shadow: 0 0 0 24px color-mix(in srgb, var(--color-brand-blue) 8%, transparent), 0 0 0 48px color-mix(in srgb, var(--color-brand-purple) 6%, transparent);
}

.art-aiself {
  display: flex;
  gap: 12px;
}

.art-aiself .dot {
  width: 42px;
  height: 42px;
  filter: saturate(1.15);
}

.art-learning code {
  color: var(--color-text-inverse);
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.4vw, 17px);
  line-height: 2;
}

.experience-section {
  background: var(--color-bg-base);
}

.experience-list {
  border-top: 2px solid var(--color-border-strong);
}

.experience-list article {
  display: grid;
  grid-template-columns: 190px 1fr 1fr;
  gap: 36px;
  align-items: center;
  min-height: 118px;
  border-bottom: 1px solid var(--color-border-default);
}

.experience-list time,
.experience-list > article > span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
}

.experience-list h3,
.experience-list p {
  margin: 0;
}

.experience-list h3 {
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: var(--fw-semibold);
}

.experience-list p {
  margin-top: 5px;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 16px;
}

.contact-section {
  padding: 120px 0 28px;
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(70px, 10vw, 150px);
  padding-bottom: 110px;
}

.contact-lead .section-kicker,
.contact-lead > p {
  color: var(--color-text-inverse-muted);
}

.contact-lead h2 {
  color: var(--color-text-inverse);
}

.contact-lead > p {
  margin-top: 30px;
  font-size: 16px;
}

.contact-list {
  border-top: 1px solid var(--color-border-inverse);
}

.contact-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 24px;
  align-items: center;
  min-height: 92px;
  border-bottom: 1px solid var(--color-border-inverse);
  transition: background var(--dur) var(--ease-out), padding var(--dur) var(--ease-out);
}

.contact-row:hover {
  padding-inline: var(--space-4);
  background: color-mix(in srgb, var(--color-text-inverse) 5%, transparent);
}

.contact-row > span {
  color: var(--color-text-inverse-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
}

.contact-row strong {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2vw, 23px);
  font-weight: var(--fw-regular);
}

.contact-row i {
  font-family: var(--font-mono);
  font-style: normal;
}

.contact-row--pending {
  color: var(--color-text-inverse-muted);
}

.contact-row--pending:hover {
  padding-inline: 0;
  background: transparent;
}

.footer-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 24px;
  padding-top: 26px;
  border-top: 1px solid var(--color-border-inverse);
  color: var(--color-text-inverse-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.footer-row a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-h);
  color: var(--color-text-inverse);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0); }
  50% { transform: translate3d(0, -12px, 0) rotate(12deg); }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}