/* ============================================
   数字媒体技术专业作品集 — 暗黑先锋风
   ============================================ */
:root {
  --bg: #0a0a0f;
  --bg-soft: #12121a;
  --ink: #f2f2f0;
  --ink-dim: #8b8b96;
  --acid: #c6ff3a;      /* 酸性绿 */
  --cyan: #46e0ff;      /* 电子青 */
  --line: rgba(242, 242, 240, 0.12);
  --font-zh: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Courier New", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-zh);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--acid); color: #0a0a0f; }

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

.outline {
  color: var(--ink);
  -webkit-text-stroke: 0;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 4vw;
  transition: background 0.35s ease, backdrop-filter 0.35s ease;
}
.site-header.scrolled {
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand-mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--ink);
}
.brand-sub { font-size: 13px; color: var(--ink-dim); letter-spacing: 4px; }
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--ink-dim);
  position: relative;
  transition: color 0.25s;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--acid);
  transition: width 0.3s ease;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { width: 100%; }

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  height: 100dvh;          /* 动态视口高度，自适应手机地址栏伸缩 */
  min-height: 480px;
  overflow: hidden;
}
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.hero-overlay {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 6vw;
  pointer-events: none;
}
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--ink);
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(48px, 10vw, 128px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
}
.hero-title .line { display: block; }
.hero-desc {
  margin-top: 28px;
  font-size: 15px;
  color: var(--ink-dim);
  letter-spacing: 2px;
}
.hero-hint {
  position: absolute;
  bottom: 34px;
  left: 6vw;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--ink);
}
.hero-meta {
  position: absolute;
  bottom: 34px;
  right: 6vw;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--ink);
}
.mouse {
  width: 20px; height: 32px;
  border: 1.5px solid var(--ink);
  border-radius: 11px;
  position: relative;
}
.mouse::after {
  content: "";
  position: absolute;
  left: 50%; top: 6px;
  width: 3px; height: 7px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: var(--ink);
  animation: wheel 1.6s ease-in-out infinite;
}
@keyframes wheel {
  0%   { transform: translateY(0);    opacity: 1; }
  70%  { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

/* ---------- 跑马灯 ---------- */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 14px 0;
  background: var(--bg-soft);
}
.marquee-track {
  display: flex;
  white-space: nowrap;
  width: max-content;
  animation: marquee 26s linear infinite;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--ink-dim);
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- 通用区块头 ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 0 6vw;
  margin-bottom: 48px;
}
.section-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.01em;
}
.section-note {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--ink-dim);
  padding-bottom: 8px;
}

/* ---------- 作品区：两排卡片 ---------- */
.works { padding: 110px 0 90px; }
.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 0 6vw;
}
.card {
  position: relative;
  display: block;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.card:hover { border-color: var(--acid); transform: translateY(-6px); }
.card figure {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.card figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(45%) contrast(1.05);
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1), filter 0.4s;
  display: block;
}
.card:hover figure img {
  transform: scale(1.07);
  filter: grayscale(0%) contrast(1.1);
}
.card-meta {
  position: relative;
  padding: 18px 18px 20px;
}
.card-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--acid);
  letter-spacing: 2px;
}
.card-meta h3 {
  margin-top: 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 1px;
}
.card-en {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.card-arrow {
  position: absolute;
  right: 18px;
  bottom: 18px;
  font-size: 20px;
  color: var(--ink-dim);
  transition: transform 0.3s ease, color 0.3s ease;
}
.card:hover .card-arrow { transform: translateX(6px); color: var(--acid); }

/* CTA 卡片 */
.card-cta {
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(198, 255, 58, 0.1), rgba(70, 224, 255, 0.06));
  border-style: dashed;
}

/* ---------- 专业简介 ---------- */
.about { padding: 100px 0 110px; border-top: 1px solid var(--line); }
.about-body { padding: 0 6vw; max-width: 980px; }
.about-lead {
  font-size: clamp(18px, 2.4vw, 26px);
  line-height: 1.8;
  font-weight: 500;
}
.about-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}
.about-tags li {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-dim);
  transition: color 0.25s, border-color 0.25s;
}
.about-tags li:hover { color: var(--acid); border-color: var(--acid); }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 90px 6vw 40px;
  background: var(--bg-soft);
}
.footer-big {
  font-size: clamp(40px, 8vw, 100px);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 60px;
}
.footer-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--ink-dim);
  letter-spacing: 1px;
}
.footer-small { font-size: 12px; }

/* ---------- 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .works-grid { grid-template-columns: 1fr; }
  .site-nav { gap: 18px; }
  .section-head { flex-direction: column; align-items: flex-start; }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
  .mouse::after { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .card figure img, .card-arrow { transition: none; }
}

/* ============================================
   子页面通用
   ============================================ */
.page-main { padding: 140px 0 90px; min-height: 70vh; }
.site-nav a.active { color: var(--ink); }
.site-nav a.active::after { width: 100%; }
.site-footer { padding: 50px 6vw; }

/* ---------- 作品筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 6vw;
  margin-bottom: 42px;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: none;
  color: var(--ink-dim);
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.filter-btn:hover { color: var(--ink); border-color: var(--ink); }
.filter-btn.active { color: #0a0a0f; background: var(--ink); border-color: var(--ink); }
.empty-state {
  display: none;
  padding: 40px 6vw 80px;
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 2px;
}
.empty-state.show { display: block; }

/* ---------- 首页“查看全部” ---------- */
.more-link {
  display: inline-block;
  margin: 46px 6vw 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
  transition: opacity 0.25s;
}
.more-link:hover { opacity: 0.5; }

/* ---------- 作品详情页 ---------- */
.back-link {
  display: inline-block;
  margin: 0 6vw 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--ink-dim);
  transition: color 0.25s;
}
.back-link:hover { color: var(--ink); }
.detail-head { padding: 0 6vw; margin-bottom: 40px; }
.detail-cat {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--ink-dim);
}
.detail-title {
  font-size: clamp(34px, 5.5vw, 64px);
  font-weight: 900;
  letter-spacing: 0.01em;
  margin-top: 12px;
}
.detail-cover { padding: 0 6vw; margin-bottom: 60px; }
.detail-cover img { width: 100%; display: block; border: 1px solid var(--line); }
.detail-body { padding: 0 6vw; max-width: 860px; margin-bottom: 70px; }
.detail-body h2 { font-size: 20px; letter-spacing: 3px; margin-bottom: 20px; }
.detail-body p { font-size: 16px; line-height: 1.9; color: #c9c9cf; margin-bottom: 14px; }
.detail-gallery {
  padding: 0 6vw;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 70px;
}
.detail-gallery img { width: 100%; display: block; border: 1px solid var(--line); }
.detail-video { padding: 0 6vw; margin-bottom: 90px; }
.detail-video h2 { font-size: 20px; letter-spacing: 3px; margin-bottom: 20px; }
.detail-video video { width: 100%; display: block; border: 1px solid var(--line); }
.video-placeholder {
  border: 1px dashed var(--line);
  padding: 70px 20px;
  text-align: center;
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  line-height: 2;
}
@media (max-width: 700px) {
  .detail-gallery { grid-template-columns: 1fr; }
}

/* ---------- 关于 / 联系页 ---------- */
.page-lead {
  padding: 0 6vw;
  max-width: 900px;
  font-size: clamp(18px, 2.4vw, 26px);
  line-height: 1.8;
  font-weight: 500;
}
.info-grid {
  padding: 60px 6vw 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.info-box { border: 1px solid var(--line); padding: 26px; background: var(--bg-soft); }
.info-box h3 { font-size: 16px; letter-spacing: 2px; margin-bottom: 10px; }
.info-box p { font-size: 14px; color: var(--ink-dim); line-height: 1.8; }
.contact-list { padding: 40px 6vw 0; list-style: none; max-width: 1000px; }
.contact-list li {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}
.contact-list .k {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--ink-dim);
}
.contact-list .v { font-size: 18px; letter-spacing: 1px; }
@media (max-width: 900px) {
  .info-grid { grid-template-columns: 1fr; }
}