/* ============================================================
   文雪怡 · 数字媒体作品集
   配色体系：米白基底 + 炭黑正文 + 赭石强调 + 深青辅助
   ============================================================ */

:root {
  /* 基底色 */
  --bg-cream: #FAF7F2;
  --bg-cream-warm: #F5EFE6;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F8F4EE;

  /* 文本色 */
  --text-ink: #1A1614;
  --text-primary: #2C2623;
  --text-secondary: #6B625D;
  --text-tertiary: #9A918B;

  /* 强调色 — 赭石 */
  --accent-ochre: #B8623D;
  --accent-ochre-light: #D48A65;
  --accent-ochre-dark: #8F492A;
  --accent-ochre-soft: rgba(184, 98, 61, 0.08);

  /* 辅助色 — 深青 */
  --accent-teal: #3D6B6F;
  --accent-teal-light: #5A8A8E;
  --accent-teal-soft: rgba(61, 107, 111, 0.08);

  /* 边框与分割 */
  --border-hair: rgba(26, 22, 20, 0.08);
  --border-light: rgba(26, 22, 20, 0.12);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(26, 22, 20, 0.04), 0 2px 8px rgba(26, 22, 20, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 22, 20, 0.06), 0 12px 32px rgba(26, 22, 20, 0.08);
  --shadow-lg: 0 8px 24px rgba(26, 22, 20, 0.08), 0 24px 64px rgba(26, 22, 20, 0.12);

  /* 字体 */
  --font-display: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;

  /* 尺寸 */
  --nav-height: 72px;
  --content-max: 1280px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* 动效 */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   顶部导航
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-hair);
  transition: box-shadow 0.3s var(--ease-out);
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--content-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-ink);
  flex-shrink: 0;
}

.nav-brand-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--accent-ochre);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-ochre);
  letter-spacing: 0.5px;
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-ink);
  letter-spacing: 1px;
}

.nav-brand-sub {
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: color 0.2s var(--ease-out);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-ochre);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--accent-ochre);
  border-radius: 50%;
}

.nav-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0;
  flex-shrink: 0;
}

.nav-hamburger svg {
  width: 22px;
  height: 22px;
}

/* 移动端菜单遮罩 */
.mobile-menu-backdrop {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(26, 22, 20, 0.4);
  z-index: 98;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.mobile-menu-backdrop.open {
  opacity: 1;
}

/* ============================================================
   Hero 区域
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 32px 80px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(184, 98, 61, 0.06), transparent 70%),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(61, 107, 111, 0.05), transparent 70%),
    var(--bg-cream);
}

.hero-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-line {
  position: absolute;
  top: 0;
  height: 100%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border-light), transparent);
  opacity: 0.5;
}

.hero-line:nth-child(1) { left: 8%; }
.hero-line:nth-child(2) { left: 24%; }
.hero-line:nth-child(3) { left: 42%; }
.hero-line:nth-child(4) { left: 58%; }
.hero-line:nth-child(5) { left: 76%; }
.hero-line:nth-child(6) { left: 92%; }

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px;
  margin-bottom: 28px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent-ochre);
  background: var(--accent-ochre-soft);
  border-radius: 100px;
  border: 1px solid rgba(184, 98, 61, 0.15);
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-ochre);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-ink);
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero-title-accent {
  color: var(--accent-ochre);
  position: relative;
  display: inline-block;
}

.hero-title-accent::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--accent-ochre-soft);
  z-index: -1;
  transform: skewX(-8deg);
}

.hero-subtitle {
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 620px;
  margin: 0 auto 40px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 52px;
}

.hero-tag {
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: 100px;
  transition: all 0.2s var(--ease-out);
}

.hero-tag:hover {
  color: var(--accent-ochre);
  border-color: var(--accent-ochre-light);
  transform: translateY(-1px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-tertiary);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-tertiary), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  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; }
}

/* ============================================================
   分区通用样式
   ============================================================ */
.section {
  padding: 96px 32px;
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 56px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.section-title-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent-ochre);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  color: var(--text-ink);
  letter-spacing: 1px;
}

.section-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.8;
}

.section-divider {
  height: 1px;
  background: linear-gradient(to right, var(--border-hair), var(--border-light), var(--border-hair));
  margin: 0 32px;
  max-width: var(--content-max);
  margin-left: auto;
  margin-right: auto;
}

/* 分类序号 */
.section-number {
  font-family: var(--font-display);
  font-size: 80px;
  font-weight: 700;
  color: var(--accent-ochre-soft);
  line-height: 1;
  letter-spacing: -4px;
  user-select: none;
}

/* ============================================================
   作品卡片网格
   ============================================================ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.work-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.35s var(--ease-out);
  cursor: pointer;
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.work-card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-surface-alt);
  overflow: hidden;
}

.work-card-media video,
.work-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease-out);
}

.work-card:hover .work-card-media video,
.work-card:hover .work-card-media img {
  transform: scale(1.04);
}

.work-card-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--bg-surface-alt) 0%, var(--bg-cream-warm) 100%);
  z-index: 1;
  transition: opacity 0.3s var(--ease-out);
}

.work-card-fallback .work-fallback-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-ochre);
  opacity: 0.6;
}

.work-card-fallback .work-fallback-icon svg {
  width: 32px;
  height: 32px;
}

.work-fallback-text {
  font-size: 13px;
  color: var(--text-tertiary);
  letter-spacing: 1px;
}

/* 视频加载后隐藏占位 */
.work-card-media video[src] + .work-card-fallback {
  opacity: 0;
  pointer-events: none;
}

.work-card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(26, 22, 20, 0) 40%, rgba(26, 22, 20, 0.6) 100%);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
  z-index: 2;
}

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

.work-play-btn {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  color: var(--accent-ochre);
  transition: all 0.3s var(--ease-bounce);
}

.work-card:hover .work-play-btn {
  transform: scale(1.1);
}

.work-play-btn svg {
  width: 22px;
  height: 22px;
  margin-left: 3px;
}

.work-card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  color: #fff;
  background: rgba(26, 22, 20, 0.7);
  backdrop-filter: blur(8px);
  border-radius: 100px;
  text-transform: uppercase;
}

.work-card-body {
  padding: 20px 22px 24px;
}

.work-card-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
  line-height: 1.4;
}

.work-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.work-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-hair);
}

.work-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.work-meta-item svg {
  width: 14px;
  height: 14px;
}

/* ============================================================
   海报设计专区
   ============================================================ */
.poster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 28px;
}

.poster-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.35s var(--ease-out);
}

.poster-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.poster-card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--bg-surface-alt);
}

.poster-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.poster-card:hover .poster-card-media img {
  transform: scale(1.05);
}

.poster-card-body {
  padding: 22px 24px 26px;
}

.poster-card-title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.poster-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================================
   音频设计专区
   ============================================================ */
.audio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 24px;
}

.audio-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-lg);
  padding: 28px 28px 24px;
  transition: all 0.35s var(--ease-out);
}

.audio-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.audio-waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 60px;
  margin-bottom: 24px;
  padding: 0 4px;
}

.audio-bar {
  flex: 1;
  background: linear-gradient(to top, var(--accent-ochre-soft), var(--accent-ochre));
  border-radius: 2px;
  opacity: 0.6;
  animation: wave 1.2s ease-in-out infinite;
}

.audio-card:hover .audio-bar {
  animation-play-state: running;
}

.audio-bar:nth-child(1) { animation-delay: 0s; height: 30%; }
.audio-bar:nth-child(2) { animation-delay: 0.1s; height: 55%; }
.audio-bar:nth-child(3) { animation-delay: 0.2s; height: 80%; }
.audio-bar:nth-child(4) { animation-delay: 0.3s; height: 45%; }
.audio-bar:nth-child(5) { animation-delay: 0.4s; height: 70%; }
.audio-bar:nth-child(6) { animation-delay: 0.5s; height: 90%; }
.audio-bar:nth-child(7) { animation-delay: 0.4s; height: 60%; }
.audio-bar:nth-child(8) { animation-delay: 0.3s; height: 40%; }
.audio-bar:nth-child(9) { animation-delay: 0.2s; height: 75%; }
.audio-bar:nth-child(10) { animation-delay: 0.1s; height: 50%; }
.audio-bar:nth-child(11) { animation-delay: 0s; height: 65%; }
.audio-bar:nth-child(12) { animation-delay: 0.1s; height: 35%; }

@keyframes wave {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(1.3); }
}

.audio-card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.audio-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.audio-player {
  width: 100%;
  margin-top: auto;
}

.audio-player audio {
  width: 100%;
  height: 36px;
}

/* ============================================================
   视频弹窗
   ============================================================ */
.video-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 12, 10, 0.85);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease-out), visibility 0.3s;
}

.video-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.video-modal {
  position: relative;
  width: 100%;
  max-width: 960px;
  background: var(--text-ink);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.3s var(--ease-out);
}

.video-modal-backdrop.open .video-modal {
  transform: scale(1);
}

.video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: #1a1614;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.video-modal-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.5px;
}

.video-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}

.video-modal-close:hover {
  background: rgba(255,255,255,0.16);
}

.video-modal-close svg {
  width: 16px;
  height: 16px;
}

.video-modal-player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
}

.video-modal-player video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ============================================================
   底部联系方式
   ============================================================ */
.footer {
  position: relative;
  background: var(--text-ink);
  color: rgba(255, 255, 255, 0.85);
  padding: 80px 32px 40px;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 2px;
}

.footer-brand-title {
  font-size: 13px;
  color: var(--accent-ochre-light);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.footer-brand-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.8;
  max-width: 360px;
}

.footer-col-title {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-ochre-light);
  margin-bottom: 20px;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  flex-shrink: 0;
}

.footer-contact-icon svg {
  width: 18px;
  height: 18px;
  color: var(--accent-ochre-light);
}

.footer-contact-placeholder {
  color: rgba(255, 255, 255, 0.35);
  font-size: 13px;
  font-style: italic;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
}

.footer-nav-item a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-nav-item a:hover {
  color: var(--accent-ochre-light);
}

.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.5px;
}

.footer-tags-line {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   响应式适配
   ============================================================ */
@media (max-width: 960px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .works-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
  }

  .poster-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
  }

  .audio-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .nav-inner {
    padding: 0 20px;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px;
    background: var(--bg-cream);
    border-bottom: 1px solid var(--border-hair);
    transform: translateY(-110%);
    transition: transform 0.3s var(--ease-out);
    overflow-y: auto;
    max-height: calc(100vh - var(--nav-height));
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-link {
    padding: 14px 8px;
    font-size: 15px;
    border-bottom: 1px solid var(--border-hair);
    border-radius: 0;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link.active::after {
    left: 0;
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    border-radius: 2px;
  }

  .nav-hamburger {
    display: flex;
  }

  .mobile-menu-backdrop.open {
    display: block;
  }

  .hero {
    padding: calc(var(--nav-height) + 32px) 20px 60px;
    min-height: auto;
  }

  .hero-line:nth-child(2),
  .hero-line:nth-child(4) {
    display: none;
  }

  .section {
    padding: 64px 20px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 40px;
  }

  .section-number {
    font-size: 56px;
  }

  .works-grid,
  .poster-grid,
  .audio-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer {
    padding: 56px 20px 28px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 36px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .video-modal-backdrop {
    padding: 0;
    align-items: flex-start;
  }

  .video-modal {
    border-radius: 0;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-eyebrow {
    font-size: 11px;
    letter-spacing: 2px;
    padding: 5px 14px;
  }

  .hero-title {
    letter-spacing: 1px;
  }

  .hero-tags {
    gap: 8px;
  }

  .hero-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .nav-brand-sub {
    display: none;
  }
}

/* ============================================================
   滚动揭示动画
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}