/* =========================================================
   宋晓飞 · Personal Site
   Cosmic void + accretion amber — brand-first hero
   ========================================================= */

:root {
  --bg: #05060a;
  --bg-elev: #0c0e16;
  --ink: #f2efe8;
  --ink-dim: rgba(242, 239, 232, 0.62);
  --ink-faint: rgba(242, 239, 232, 0.38);
  --amber: #ff8a3d;
  --amber-soft: #ffc28a;
  --cyan: #7ec8ff;
  --line: rgba(242, 239, 232, 0.12);
  --line-strong: rgba(242, 239, 232, 0.22);
  --glass: rgba(12, 14, 22, 0.55);
  --radius: 2px;
  --font-display: "Syne", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", system-ui, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-h: 72px;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
  --max: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--amber) var(--bg);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.has-cursor {
  cursor: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input { font: inherit; color: inherit; }
strong { font-weight: 500; }

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Custom cursor */
.cursor,
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s;
}

body.has-cursor .cursor,
body.has-cursor .cursor-dot { opacity: 1; }

.cursor {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 138, 61, 0.55);
  mix-blend-mode: difference;
  transition: width 0.35s var(--ease-out), height 0.35s var(--ease-out), background 0.35s, border-color 0.35s;
}

.cursor.is-hover {
  width: 64px;
  height: 64px;
  background: rgba(255, 138, 61, 0.12);
  border-color: var(--amber);
}

.cursor-dot {
  width: 5px;
  height: 5px;
  background: var(--amber);
}

/* ---------- Site loader (event horizon entrance) ---------- */
body.is-loading {
  overflow: hidden;
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% 45%, rgba(255, 138, 61, 0.14), transparent 55%),
    #05060a;
  transition: opacity 0.85s var(--ease-out), visibility 0.85s;
}

.site-loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-stage {
  position: absolute;
  width: min(52vw, 280px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.loader-glow {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, 0.28), transparent 68%);
  animation: loader-pulse 2.4s ease-in-out infinite;
}

.loader-disk {
  position: absolute;
  width: 100%;
  height: 28%;
  border-radius: 50%;
  border: 1.5px solid transparent;
  border-top-color: rgba(255, 194, 138, 0.85);
  border-bottom-color: rgba(255, 138, 61, 0.35);
  box-shadow: 0 0 24px rgba(255, 138, 61, 0.18);
}

.loader-disk--a {
  transform: rotateX(68deg) rotateZ(-24deg);
  animation: loader-spin 3.2s linear infinite;
}

.loader-disk--b {
  width: 78%;
  height: 22%;
  border-top-color: rgba(255, 138, 61, 0.55);
  transform: rotateX(68deg) rotateZ(18deg);
  animation: loader-spin-rev 4.6s linear infinite;
  opacity: 0.7;
}

.loader-horizon {
  position: absolute;
  width: 38%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 194, 138, 0.45);
  box-shadow:
    0 0 0 10px rgba(255, 138, 61, 0.04),
    inset 0 0 24px rgba(0, 0, 0, 0.85);
  animation: loader-breathe 2.8s ease-in-out infinite;
}

.loader-core {
  position: absolute;
  width: 14%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #020308;
  box-shadow: 0 0 20px 6px rgba(255, 138, 61, 0.25);
}

.loader-copy {
  position: relative;
  margin-top: min(48vw, 260px);
  width: min(320px, 78vw);
  text-align: center;
  z-index: 1;
}

.loader-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 2.75rem);
  letter-spacing: 0.28em;
  padding-left: 0.28em;
  color: var(--ink);
  margin-bottom: 1.1rem;
  animation: loader-brand-in 1s var(--ease-out) both;
}

.loader-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.65rem;
}

.loader-pct {
  font-family: var(--font-display);
  color: var(--amber-soft);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

.loader-pct em {
  font-style: normal;
  font-weight: 700;
  color: var(--amber);
}

.loader-track {
  height: 1px;
  background: rgba(242, 239, 232, 0.12);
  overflow: hidden;
}

.loader-track i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, transparent, var(--amber), var(--amber-soft));
  box-shadow: 0 0 12px rgba(255, 138, 61, 0.55);
  transition: width 0.25s linear;
}

@keyframes loader-spin {
  from { transform: rotateX(68deg) rotateZ(-24deg); }
  to { transform: rotateX(68deg) rotateZ(336deg); }
}

@keyframes loader-spin-rev {
  from { transform: rotateX(68deg) rotateZ(18deg); }
  to { transform: rotateX(68deg) rotateZ(-342deg); }
}

@keyframes loader-pulse {
  0%, 100% { opacity: 0.55; transform: scale(0.96); }
  50% { opacity: 1; transform: scale(1.04); }
}

@keyframes loader-breathe {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.06); opacity: 1; }
}

@keyframes loader-brand-in {
  from { opacity: 0; letter-spacing: 0.55em; transform: translateY(12px); }
  to { opacity: 1; letter-spacing: 0.28em; transform: translateY(0); }
}

.site-loader.is-exiting .loader-stage {
  animation: loader-collapse 0.9s var(--ease-out) forwards;
}

.site-loader.is-exiting .loader-copy {
  animation: loader-copy-out 0.55s var(--ease-out) forwards;
}

@keyframes loader-collapse {
  to {
    transform: scale(0.15);
    opacity: 0;
    filter: blur(8px);
  }
}

@keyframes loader-copy-out {
  to {
    opacity: 0;
    transform: translateY(16px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .loader-glow,
  .loader-disk,
  .loader-horizon,
  .loader-brand {
    animation: none !important;
  }
  .site-loader.is-exiting .loader-stage,
  .site-loader.is-exiting .loader-copy {
    animation: none !important;
  }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(5, 6, 10, 0.72);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--ink);
}

.nav {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.nav a {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  position: relative;
  transition: color 0.3s;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}

.nav a:hover,
.nav a.active {
  color: var(--ink);
}

.nav a:hover::after,
.nav a.active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  width: 22px;
  background: var(--ink);
  transition: transform 0.35s var(--ease-out), opacity 0.25s;
}

.nav-toggle.is-open span:first-child {
  transform: translateY(4.25px) rotate(45deg);
}

.nav-toggle.is-open span:last-child {
  transform: translateY(-4.25px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5, 6, 10, 0.35) 0%, transparent 28%, transparent 55%, rgba(5, 6, 10, 0.85) 100%),
    radial-gradient(ellipse 70% 55% at 50% 48%, transparent 20%, rgba(5, 6, 10, 0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: calc(var(--header-h) + 2rem) var(--pad) 6rem;
  max-width: 920px;
  filter: drop-shadow(0 8px 40px rgba(5, 6, 10, 0.85));
}

.hero-content::before {
  content: "";
  position: absolute;
  inset: 8% -8% 12%;
  background: radial-gradient(ellipse at 50% 45%, rgba(5, 6, 10, 0.55) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: clamp(0.7rem, 1.2vw, 0.82rem);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--amber-soft);
  margin-bottom: 1.5rem;
}

.hero-name {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.name-zh {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.6rem, 12vw, 8.5rem);
  line-height: 0.95;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #fff 20%, var(--amber-soft) 55%, var(--amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 80px rgba(255, 138, 61, 0.25);
}

.name-en {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.hero-role {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  letter-spacing: 0.4em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.hero-tagline {
  max-width: 34em;
  margin: 0 auto 2rem;
  color: var(--ink-dim);
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  font-weight: 300;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.6rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  border: 1px solid transparent;
  transition: transform 0.4s var(--ease-out), background 0.3s, border-color 0.3s, color 0.3s;
}

.btn-primary {
  background: var(--amber);
  color: #1a0d05;
}

.btn-primary:hover {
  background: var(--amber-soft);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber-soft);
}

/* Blackhole controls */
.bh-panel {
  position: absolute;
  z-index: 3;
  right: var(--pad);
  bottom: 5.5rem;
  width: min(280px, calc(100vw - 2rem));
  background: var(--glass);
  backdrop-filter: blur(18px);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.bh-panel-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}

.bh-panel-toggle svg {
  transition: transform 0.35s var(--ease-out);
}

.bh-panel.is-collapsed .bh-panel-toggle svg {
  transform: rotate(-90deg);
}

.bh-panel-body {
  padding: 0 1rem 1rem;
  display: grid;
  gap: 0.75rem;
  max-height: 520px;
  overflow-x: hidden;
  overflow-y: auto;
  transition: max-height 0.45s var(--ease-out), opacity 0.3s, padding 0.3s;
}

.bh-panel.is-collapsed .bh-panel-body {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.preset-title {
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin-top: 0.15rem;
}

.preset-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  padding: 0.45rem 0.55rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.25s, background 0.25s, color 0.25s;
}

.preset-btn:hover {
  border-color: rgba(255, 138, 61, 0.45);
  background: rgba(255, 138, 61, 0.08);
}

.preset-btn.is-active {
  border-color: var(--amber);
  background: rgba(255, 138, 61, 0.14);
}

.preset-zh {
  font-size: 0.72rem;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.preset-en {
  font-family: var(--font-display);
  font-size: 0.58rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}

.preset-btn.is-active .preset-en {
  color: var(--amber-soft);
}

.ctrl {
  display: grid;
  gap: 0.35rem;
}

.ctrl span {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.ctrl em {
  font-style: normal;
  color: var(--amber-soft);
  font-variant-numeric: tabular-nums;
}

.ctrl input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--line-strong);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.ctrl input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--amber);
  border: 2px solid #1a0d05;
  box-shadow: 0 0 12px rgba(255, 138, 61, 0.45);
}

.ctrl input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--amber);
  border: 2px solid #1a0d05;
}

.bh-credit {
  font-size: 0.65rem;
  color: var(--ink-faint);
  line-height: 1.4;
  margin-top: 0.25rem;
}

.bh-credit a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.scroll-hint {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.scroll-hint i {
  display: block;
  width: 1px;
  height: 36px;
  background: linear-gradient(var(--amber), transparent);
  animation: scrollPulse 1.8s var(--ease-out) infinite;
}

@keyframes scrollPulse {
  0% { transform: scaleY(0.4); opacity: 0; transform-origin: top; }
  40% { opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; transform-origin: top; }
}

/* Sections shared */
.section {
  position: relative;
  padding: clamp(4.5rem, 10vw, 8rem) var(--pad);
  max-width: calc(var(--max) + var(--pad) * 2);
  margin: 0 auto;
}

.section-head {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  max-width: 40rem;
}

.section-index {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: 0.04em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--ink-dim);
  font-size: 1.02rem;
  font-weight: 300;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.about-card {
  padding: 2rem 1.75rem;
  background:
    linear-gradient(160deg, rgba(255, 138, 61, 0.06), transparent 45%),
    var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.12em;
  margin-bottom: 1.5rem;
  color: var(--amber-soft);
}

.info-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.info-list li:last-child { border-bottom: none; }

.info-list span {
  color: var(--ink-faint);
  flex-shrink: 0;
}

.info-list a:hover { color: var(--amber); }

.edu-school {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.edu-meta {
  color: var(--amber-soft);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.edu-note {
  color: var(--ink-dim);
  font-size: 0.95rem;
}

/* Skills */
.skills {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.skills .section-head {
  padding: 0 var(--pad);
  max-width: calc(var(--max) + var(--pad) * 2);
  margin-left: auto;
  margin-right: auto;
}

.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: center;
  padding: 0 var(--pad);
  max-width: 1100px;
  margin: 0 auto;
}

.skill-tag {
  padding: 0.65rem 1.1rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--ink-dim);
  transition: transform 0.4s var(--ease-out), border-color 0.3s, color 0.3s, background 0.3s;
}

.skill-tag:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
  color: var(--ink);
  background: rgba(255, 138, 61, 0.08);
}

/* Advantages */
.adv-list {
  display: grid;
  gap: 1rem;
}

.adv-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.adv-item:last-child {
  border-bottom: 1px solid var(--line);
}

.adv-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--amber);
  letter-spacing: 0.05em;
  padding-top: 0.15rem;
}

.adv-item p {
  color: var(--ink-dim);
  font-size: 0.98rem;
}

/* Experience */
.timeline {
  display: grid;
  gap: 2.5rem;
}

.job {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
}

.job:last-child { border-bottom: none; padding-bottom: 0; }

.job-meta time {
  display: block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--amber);
  margin-bottom: 0.75rem;
}

.job-meta h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}

.job-role {
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.job-lead {
  color: var(--ink);
  margin-bottom: 1.25rem;
  font-size: 1.02rem;
}

.job-body h4 {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--amber-soft);
  margin: 1.35rem 0 0.7rem;
}

.job-body ul {
  display: grid;
  gap: 0.55rem;
}

.job-body li {
  position: relative;
  padding-left: 1rem;
  color: var(--ink-dim);
  font-size: 0.94rem;
}

.job-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0.7;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink-dim);
  background: rgba(126, 200, 255, 0.04);
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.project {
  padding: 1.75rem;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  transition: border-color 0.35s, transform 0.45s var(--ease-out), background 0.35s;
}

.project:hover {
  border-color: rgba(255, 138, 61, 0.45);
  transform: translateY(-4px);
  background:
    linear-gradient(165deg, rgba(255, 138, 61, 0.07), transparent 50%),
    var(--bg-elev);
}

.project-top time {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin-bottom: 0.65rem;
}

.project-top h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.35rem;
}

.project-role {
  color: var(--ink-faint);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.project > p {
  color: var(--ink-dim);
  font-size: 0.92rem;
  margin-bottom: 0.85rem;
}

.project ul {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.project li {
  padding-left: 0.85rem;
  position: relative;
  color: var(--ink-faint);
  font-size: 0.86rem;
}

.project li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--amber);
}

.project-result {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  border-top: 1px solid var(--line);
  padding-top: 0.9rem;
}

/* Contact */
.contact-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 2rem 1.75rem;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  transition: border-color 0.35s, transform 0.4s var(--ease-out);
}

.contact-link:hover {
  border-color: var(--amber);
  transform: translateY(-3px);
}

.contact-link span {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}

.contact-link strong {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-footer {
  padding: 2.5rem var(--pad) 3rem;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--ink-faint);
  font-size: 0.8rem;
}

/* Reveal — content visible by default; only animate when JS is ready */
.reveal {
  opacity: 1;
  transform: none;
}

.js-ready .reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.js-ready .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .project-grid,
  .contact-row,
  .job {
    grid-template-columns: 1fr;
  }

  .bh-panel {
    right: 1rem;
    left: 1rem;
    width: auto;
    bottom: 4.5rem;
  }

  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    gap: 0;
    padding: 1rem var(--pad) 1.5rem;
    background: rgba(5, 6, 10, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.45s var(--ease-out), opacity 0.35s;
  }

  .nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }
}

@media (max-width: 600px) {
  .hero-content { padding-bottom: 9rem; }
  .name-zh { letter-spacing: 0.04em; }
  .hero-role { letter-spacing: 0.2em; }
  .adv-item { gap: 0.85rem; }
  .bh-panel { font-size: 0.9rem; }
}

@media (hover: none) {
  body.has-cursor { cursor: auto; }
  .cursor, .cursor-dot { display: none !important; }
}

.text-multiline {
  white-space: pre-wrap;
}

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