/* ============================================
   XIONG WENRUI PORTFOLIO
   赛博风 · 高级感 · 单色点缀
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg-alt: #0f0f0f;
  --fg: #e8e8e8;
  --fg-dim: #888;
  --fg-mute: #444;
  --accent: #00f0ff;
  --accent-dim: rgba(0, 240, 255, 0.15);
  --accent-glow: rgba(0, 240, 255, 0.4);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 240, 255, 0.5);
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --font-sans: "Space Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  overflow-x: hidden;
  cursor: crosshair;
  min-height: 100vh;
}

/* ============= AUDIO TOGGLE ============= */
.audio-toggle {
  position: fixed;
  right: 32px;
  bottom: 32px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px 14px 18px;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 4px;
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.25),
    inset 0 0 12px rgba(0, 240, 255, 0.05);
  overflow: hidden;
  animation: audio-invite 3.5s ease-in-out infinite;
}

.audio-toggle::before,
.audio-toggle::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--accent);
  pointer-events: none;
}

.audio-toggle::before {
  top: 4px;
  left: 4px;
  border-top: 1px solid;
  border-left: 1px solid;
}

.audio-toggle::after {
  right: 4px;
  bottom: 4px;
  border-right: 1px solid;
  border-bottom: 1px solid;
}

.audio-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 30px rgba(0, 240, 255, 0.5),
    inset 0 0 15px rgba(0, 240, 255, 0.1);
  animation: none;
}

.audio-toggle.playing {
  background: rgba(0, 240, 255, 0.08);
  box-shadow: 0 0 32px rgba(0, 240, 255, 0.55),
    inset 0 0 20px rgba(0, 240, 255, 0.12);
  animation: none;
}

@keyframes audio-invite {
  0%,
  100% {
    box-shadow: 0 0 24px rgba(0, 240, 255, 0.25),
      inset 0 0 12px rgba(0, 240, 255, 0.05);
    transform: translateY(0);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.55),
      inset 0 0 20px rgba(0, 240, 255, 0.15);
    transform: translateY(-3px);
  }
}

.audio-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.06);
  flex-shrink: 0;
}

.audio-bars {
  display: inline-flex;
  gap: 2px;
  align-items: flex-end;
  height: 18px;
}

.audio-bars span {
  display: block;
  width: 2px;
  height: 4px;
  background: currentColor;
  border-radius: 1px;
  transition: height 0.2s ease;
}

.audio-toggle.playing .audio-bars span {
  animation: audio-bar 0.9s ease-in-out infinite;
}

.audio-toggle.playing .audio-bars span:nth-child(1) {
  animation-delay: 0s;
}
.audio-toggle.playing .audio-bars span:nth-child(2) {
  animation-delay: 0.12s;
}
.audio-toggle.playing .audio-bars span:nth-child(3) {
  animation-delay: 0.24s;
}
.audio-toggle.playing .audio-bars span:nth-child(4) {
  animation-delay: 0.36s;
}
.audio-toggle.playing .audio-bars span:nth-child(5) {
  animation-delay: 0.48s;
}

@keyframes audio-bar {
  0%,
  100% {
    height: 3px;
  }
  50% {
    height: 18px;
  }
}

.audio-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
  text-align: left;
}

.audio-title {
  font-size: 12px;
  letter-spacing: 0.28em;
  font-weight: 700;
}

.audio-hint {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--fg-dim);
  opacity: 0.85;
}

.audio-toggle.playing .audio-hint {
  color: var(--accent);
  opacity: 1;
}

.audio-pulse {
  position: absolute;
  right: 8px;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 1.8s infinite;
}

.audio-toggle.playing .audio-pulse {
  animation: pulse 0.9s infinite;
}

@media (max-width: 768px) {
  .audio-toggle {
    right: 16px;
    bottom: 16px;
    padding: 10px 16px 10px 14px;
    gap: 10px;
  }
  .audio-icon {
    width: 28px;
    height: 28px;
  }
  .audio-bars {
    height: 14px;
  }
  .audio-title {
    font-size: 11px;
  }
  .audio-hint {
    font-size: 8px;
  }
}

/* ============= 全局背景效果 ============= */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 3px,
    rgba(255, 255, 255, 0.015) 3px,
    rgba(255, 255, 255, 0.015) 4px
  );
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9997;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' /%3E%3C/svg%3E");
}

.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
}

/* ============= NAV ============= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 48px;
  z-index: 100;
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.nav-logo {
  font-weight: 700;
  letter-spacing: 0.2em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bracket {
  color: var(--accent);
}

.nav-sub {
  color: var(--fg-dim);
  font-weight: 300;
  font-size: 10px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 0.3s;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.nav-links a span {
  color: var(--fg-mute);
  font-size: 10px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-links a:hover span,
.nav-links a.active span {
  color: var(--accent);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-dim);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* ============= SIDE INFO ============= */
.side-info {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  font-family: var(--font-mono);
  font-size: 10px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px 16px;
  border-left: 1px solid var(--accent-dim);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.side-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-item .label {
  color: var(--fg-mute);
  letter-spacing: 0.2em;
}

.side-item .value {
  color: var(--fg-dim);
  letter-spacing: 0.15em;
}

/* ============= HERO ============= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 120px 48px 60px;
  position: relative;
  z-index: 1;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -3;
  opacity: 0.58;
  filter: grayscale(20%) contrast(1.2) brightness(0.9) saturate(0.9);
  transform: scale(1.04);
  animation: hero-video-breathe 9s ease-in-out infinite alternate;
}

@keyframes hero-video-breathe {
  0% {
    transform: scale(1.035) translate3d(0, 0, 0);
  }
  100% {
    transform: scale(1.075) translate3d(-0.6%, -0.4%, 0);
  }
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 45%, rgba(0, 240, 255, 0.16), transparent 38%),
    linear-gradient(180deg, rgba(10, 10, 10, 0.58) 0%, rgba(10, 10, 10, 0.36) 42%, rgba(10, 10, 10, 0.78) 100%),
    linear-gradient(90deg, rgba(10, 10, 10, 0.82) 0%, transparent 22%, transparent 78%, rgba(10, 10, 10, 0.82) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent 0%, black 22%, black 72%, transparent 100%);
}

.hero-corner {
  position: absolute;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 32px;
  opacity: 0.6;
}

.hero-corner.tl {
  top: 100px;
  left: 40px;
}

.hero-corner.tr {
  top: 100px;
  right: 40px;
}

.hero-corner.bl {
  bottom: 100px;
  left: 40px;
}

.hero-corner.br {
  bottom: 100px;
  right: 40px;
}

.hero-content {
  max-width: 1100px;
  width: 100%;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--fg-dim);
  margin-bottom: 40px;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s infinite;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(60px, 14vw, 180px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}

.title-line {
  display: block;
  position: relative;
}

.title-line::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  text-stroke: 1px var(--accent);
  transform: translate(4px, 4px);
  opacity: 0.5;
  z-index: -1;
}

.title-line.accent {
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  margin-bottom: 60px;
  min-height: 24px;
}

.cursor {
  color: var(--accent);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%,
  50% {
    opacity: 1;
  }
  51%,
  100% {
    opacity: 0;
  }
}

.hero-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.meta-item {
  text-align: left;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-mute);
  letter-spacing: 0.2em;
  margin-bottom: 6px;
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg);
  letter-spacing: 0.05em;
}

.meta-divider {
  width: 1px;
  height: 30px;
  background: var(--border);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-decoration: none;
  transition: all 0.3s;
  border: 1px solid;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-dim);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

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

.btn-arrow {
  transition: transform 0.3s;
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--fg-dim);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-drop 2s infinite;
}

@keyframes scroll-drop {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ============= SECTION 通用 ============= */
.section {
  padding: 120px 48px;
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 80px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.3em;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-sans);
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 24px;
}

.accent {
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-dim);
}

.section-line {
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 20px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.section-desc {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
  max-width: 600px;
}

/* ============= WORKS ============= */
.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.work-card {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  overflow: hidden;
  transition: all 0.4s;
  position: relative;
  cursor: pointer;
}

.work-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  transition: border-color 0.3s;
  pointer-events: none;
  z-index: 2;
}

.work-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 240, 255, 0.1);
}

.work-preview {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #000;
}

.work-preview video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(1.1);
  transition: all 0.5s;
}

.work-card:hover .work-preview video {
  filter: grayscale(0%) contrast(1.15);
  transform: scale(1.03);
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(0, 0, 0, 0.7));
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s;
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
}

.work-info {
  padding: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: center;
}

.work-num {
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--fg-mute);
  font-weight: 300;
}

.work-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}

.work-title {
  font-size: 20px;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.work-desc {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
}

.work-arrow {
  color: var(--fg-mute);
  font-size: 20px;
  transition: all 0.3s;
}

.work-card:hover .work-arrow {
  color: var(--accent);
  transform: translateX(6px);
}

/* ============= SKILLS ============= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.skill-block {
  border: 1px solid var(--border);
  padding: 32px 24px;
  background: var(--bg-alt);
  transition: all 0.3s;
  position: relative;
}

.skill-block:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.skill-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-mute);
  letter-spacing: 0.3em;
  margin-bottom: 12px;
}

.skill-block h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
}

.skill-name {
  color: var(--fg-dim);
}

.skill-lvl {
  color: var(--accent);
  letter-spacing: 2px;
  font-size: 10px;
}

/* ============= ABOUT ============= */
.about-wrap {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 60px;
}

.about-card {
  border: 1px solid var(--border);
  padding: 32px;
  background: var(--bg-alt);
  position: sticky;
  top: 100px;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 2 / 3;
  margin-bottom: 28px;
  overflow: hidden;
  border: 1px solid var(--border-hover);
  background: #000;
  box-shadow: 0 0 32px rgba(0, 240, 255, 0.08);
}

.portrait-frame::before,
.portrait-frame::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  z-index: 3;
  pointer-events: none;
}

.portrait-frame::before {
  top: 10px;
  left: 10px;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--accent);
}

.portrait-frame::after {
  right: 10px;
  bottom: 10px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.08) brightness(0.82);
  transform: scale(1.02);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.about-card:hover .portrait-frame img {
  transform: scale(1.055);
  filter: grayscale(80%) contrast(1.12) brightness(0.88);
}

.portrait-scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.12) 50%, transparent 100%),
    repeating-linear-gradient(0deg, transparent 0, transparent 4px, rgba(255, 255, 255, 0.025) 4px, rgba(255, 255, 255, 0.025) 5px);
  mix-blend-mode: screen;
  opacity: 0.45;
}

.portrait-tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 4;
  padding: 5px 9px;
  background: rgba(0, 0, 0, 0.58);
  border: 1px solid rgba(0, 240, 255, 0.35);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  backdrop-filter: blur(10px);
}

.about-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.3em;
  margin-bottom: 24px;
}

.about-name {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.about-role {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.about-lines {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
}

.about-lines span {
  color: var(--accent);
  margin-right: 8px;
}

.about-bio {
  font-size: 16px;
  line-height: 1.9;
  color: var(--fg);
  margin-bottom: 60px;
  padding: 32px;
  border-left: 2px solid var(--accent);
  background: rgba(0, 240, 255, 0.02);
}

.hl {
  color: var(--accent);
  font-weight: 500;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 6px;
  width: 1px;
  background: var(--border);
}

.tl-item {
  position: relative;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 13px;
  height: 13px;
  border: 2px solid var(--accent);
  background: var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-glow);
}

.tl-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.tl-role {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 2px;
}

.tl-company {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.tl-desc {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* ============= CONTACT ============= */
.contact-wrap {
  text-align: center;
}

.contact-big {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 300;
  line-height: 1.4;
  margin-bottom: 80px;
  letter-spacing: -0.01em;
}

.mail-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  transition: all 0.3s;
  padding-bottom: 4px;
  font-weight: 500;
  cursor: pointer;
  display: inline-block;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.mail-link:hover {
  text-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

.mail-link:active {
  transform: translateY(0);
}

.at {
  opacity: 0.5;
  margin: 0 2px;
}

.contact-hint {
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-mute);
  letter-spacing: 0.15em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.hint-arrow {
  color: var(--accent);
  animation: bounce-up 2s infinite;
}

@keyframes bounce-up {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

.copied-toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--accent);
  color: var(--bg);
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  z-index: 9999;
  box-shadow: 0 0 20px var(--accent-glow);
}

.copied-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-item {
  padding: 24px;
  border: 1px solid var(--border);
  text-align: left;
  transition: all 0.3s;
}

.contact-item:hover {
  border-color: var(--border-hover);
}

.ci-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-mute);
  letter-spacing: 0.3em;
  margin-bottom: 12px;
}

.ci-value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg);
  letter-spacing: 0.05em;
}

/* ============= FOOTER ============= */
.footer {
  padding: 40px 48px;
  position: relative;
  z-index: 1;
}

.footer-line {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-dim),
    transparent
  );
  margin-bottom: 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-mute);
  letter-spacing: 0.2em;
}

/* ============= 响应式 ============= */
@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: 1fr;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-wrap {
    grid-template-columns: 1fr;
  }
  .about-card {
    position: static;
  }
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .side-info {
    display: none;
  }
  .hero-corner {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 16px 20px;
    flex-wrap: wrap;
    gap: 12px;
  }
  .nav-links {
    gap: 16px;
    font-size: 10px;
  }
  .nav-links a span {
    display: none;
  }
  .hero {
    padding: 100px 20px 60px;
  }
  .section {
    padding: 80px 20px;
  }
  .hero-meta {
    gap: 20px;
  }
  .meta-divider {
    display: none;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .work-info {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    align-items: center;
  }
}