:root{
  --bg:#0a0a0c;
  --fg:#f0f0f0;
  --muted:rgba(240,240,240,.55);

  --img-1200: 66%;
  --txt-1200: 34%;

  --img-900:  64%;
  --txt-900:  36%;

  --img-320:  60%;
  --txt-320:  40%;

  --gap-1200: 56px;
  --gap-900:  36px;
  --gap-320:  16px;

  --radius: 10px;
  --shadow: 0 30px 80px rgba(0,0,0,.55);
  --ring: 0 0 0 1px rgba(255,255,255,.08);

  /* 视差偏移（JS 写入） */
  --mx: 0px;
  --my: 0px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }

body{
  margin:0;
  font-family:"Space Grotesk", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--fg);
  background:
    radial-gradient(1200px 700px at 18% 30%, rgba(255,255,255,.08), transparent 55%),
    radial-gradient(900px 700px at 82% 42%, rgba(255,255,255,.06), transparent 60%),
    radial-gradient(1200px 900px at 55% 85%, rgba(0,0,0,.7), transparent 55%),
    var(--bg);
  overflow-x:hidden;

  /* 原来鼠标互动：隐藏系统鼠标 */
  cursor: none;
}

.serif{ font-family:"Playfair Display", serif; }

/* =========================
   1) Canvas 背景层
   ========================= */
#bg-canvas{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  pointer-events:none;
}

/* =========================
   2) 自定义鼠标（可见 + 居中）
   ========================= */
#cursor{
  width:12px;
  height:12px;
  border-radius:999px;
  background:rgba(255,255,255,.95);
  position:fixed;
  left:-100px;
  top:-100px;
  z-index:9999;
  pointer-events:none;
  mix-blend-mode:difference;

  /* 默认状态放大一倍 */
  transform: translate(-50%, -50%) scale(2);

  transition: transform 0.18s ease, opacity 0.25s ease;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.20), 0 0 18px rgba(255,255,255,0.18);
}

/* 触控设备：恢复系统鼠标、隐藏自定义鼠标 */
@media (pointer: coarse){
  body{ cursor:auto; }
  #cursor{ display:none !important; }
}

/* 颗粒层 */
.bg-grain{
  position:fixed;
  inset:0;
  background-image:url("https://grainy-gradients.vercel.app/noise.svg");
  opacity:.055;
  pointer-events:none;
  z-index:1;
}

/* 视差：极简 transform（JS 写入变量） */
.parallax{
  will-change: transform;
  transform: translate3d(calc(var(--mx) * var(--d, 0)), calc(var(--my) * var(--d, 0)), 0);
}

/* -------- Nav / Hero -------- */
.nav{
  position:fixed;
  top:0; left:0; right:0;
  padding:28px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  z-index:50;
  mix-blend-mode:difference;
  --d: 1;
}
.brand{ font-weight:700; letter-spacing:-.02em; font-size:22px; }
.navlinks{
  display:flex;
  gap:40px;
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
}
.nav a{ color:var(--fg); text-decoration:none; }
.nav a:hover{ text-decoration:line-through; }

.hero{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:0 16px;
  position:relative;
  z-index:2;
}
.hero-sub{
  font-size:11px;
  letter-spacing:.5em;
  text-transform:uppercase;
  opacity:.55;
  margin:0 0 18px 0;
  --d: 1;
}
.hero-title{
  font-weight:800;
  line-height:.9;
  margin:0 0 16px 0;
  font-size:clamp(56px, 8vw, 160px);
  --d: 1;
}
.hero-quote{
  margin:0;
  max-width:720px;
  font-weight:300;
  color:rgba(240,240,240,.62);
  line-height:1.7;
  --d: 1;
}
.hero-scroll{
  position:absolute;
  bottom:28px;
  font-size:12px;
  letter-spacing:.18em;
  opacity:.32;
  animation:bounce 1.8s infinite;
  --d: 1;
}
@keyframes bounce{
  0%,100%{ transform:translateY(0); }
  50%{ transform:translateY(-8px); }
}

/* -------- Layout wrapper -------- */
.wrap{
  width:min(1200px, calc(100% - 80px));
  margin:0 auto;
  padding:72px 0 96px;
  position:relative;
  z-index:2;
}

/* 每一行固定“图片 + 文字”结构 */
.row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--gap-1200);
  margin:0 0 160px 0;
  z-index:2;
  --d: 1;
}
.row.reverse{ flex-direction:row-reverse; }

/* 图片容器 */
.media{
  flex:0 0 var(--img-1200);
  position:relative;
  padding:22px;
  border-radius: calc(var(--radius) + 2px);
  background:
    radial-gradient(120% 140% at 30% 25%, rgba(255,255,255,.08), transparent 55%),
    rgba(0,0,0,.55);
  box-shadow: var(--shadow);
  outline:none;
}
.media img{
  display:block;
  width:100%;
  height:auto;
  border-radius: var(--radius);
  box-shadow: var(--ring);
}

/* 文字区：默认隐藏（hover 图片显现） */
.copy{
  flex:0 0 var(--txt-1200);
  opacity:0;
  filter: blur(10px);
  transform: translateY(12px);
  transition: opacity 800ms ease, filter 900ms ease, transform 900ms ease;
  pointer-events:none;
}
.copy h3{
  margin:10px 0 10px 0;
  font-size:38px;
  letter-spacing:-.02em;
  line-height:1.05;
}
.copy p{
  margin:0;
  font-size:16px;
  line-height:1.8;
}
.muted{ color:var(--muted); }
.italic{ font-style:italic; }

.align-right{ text-align:right; }

.idx{
  font-weight:700;
  letter-spacing:.03em;
  font-size:14px;
}
.idx-red{ color:#ff3b30; }
.idx-blue{ color:#007aff; }
.idx-green{ color:#34c759; }
.idx-white{ color:#f0f0f0; }
.idx-dim{ color:rgba(240,240,240,.75); }

/* hover 显示文字 */
.row.show .copy{
  opacity:1;
  filter: blur(0);
  transform: translateY(0);
}

/* 入场动画（JS 加 .in） */
.row.enter{
  opacity:0;
  transform: translateY(50px);
  transition: opacity 900ms ease, transform 900ms ease;
}
.row.enter.in{
  opacity:1;
  transform: translateY(0);
}

/* -------- Footer -------- */
.footer{
  padding:96px 24px 64px;
  text-align:center;
  border-top:1px solid rgba(255,255,255,.08);
  position:relative;
  z-index:2;
  --d: 1;
}
.footer h4{
  font-weight:300;
  font-size:26px;
  margin:0 0 22px 0;
}
.cta{
  border:0;
  cursor:pointer;
  padding:14px 34px;
  border-radius:999px;
  background:#fff;
  color:#000;
  font-weight:800;
  letter-spacing:-.02em;
  text-transform:uppercase;
  transition: transform 200ms ease;
}
.cta:hover{ transform: scale(1.08); }
.footnote{
  margin-top:42px;
  font-size:11px;
  letter-spacing:.28em;
  opacity:.35;
}

/* ===================== 新增：左下角音乐按钮（图二） ===================== */
.music-btn{
  position:fixed;
  left:18px;
  bottom:18px;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:80;
  color:rgba(255,255,255,.78);
  cursor:pointer;
  pointer-events:auto;
  transition: transform 180ms ease, opacity 220ms ease, border-color 220ms ease;
  mix-blend-mode: normal;
}
.music-btn:hover{ transform: scale(1.06); border-color: rgba(255,255,255,.28); }
.music-btn:active{ transform: scale(0.98); }
.music-ico{ width:22px; height:22px; display:block; }

/* paused 状态：更淡一点 */
.music-btn.is-paused{
  opacity:.62;
}

/* ===================== 900px ===================== */
@media (max-width: 900px){
  .wrap{
    width:min(900px, calc(100% - 48px));
    padding:56px 0 80px;
  }
  .nav{ padding:22px 24px; }
  .navlinks{ gap:26px; }

  .row{ gap:var(--gap-900); margin-bottom:120px; }

  .media{ flex-basis: var(--img-900); padding:16px; }
  .copy{ flex-basis: var(--txt-900); }

  .copy h3{ font-size:30px; }
  .copy p{ font-size:14px; }
}

/* ===================== 320px (<=420) ===================== */
@media (max-width: 420px){
  .wrap{
    width:calc(100% - 22px);
    padding:44px 0 64px;
  }
  .nav{ padding:18px 16px; }
  .brand{ font-size:18px; }
  .navlinks{ gap:14px; letter-spacing:.18em; }

  .row{ gap:var(--gap-320); margin-bottom:86px; }

  .media{
    flex-basis: var(--img-320);
    padding:10px;
    border-radius:10px;
  }
  .media img{ border-radius:8px; }

  .copy{ flex-basis: var(--txt-320); }
  .copy h3{ font-size:18px; margin:6px 0 8px 0; }
  .copy p{ font-size:11px; line-height:1.65; }
  .idx{ font-size:12px; }

  .music-btn{
    left:12px;
    bottom:12px;
    width:40px;
    height:40px;
    border-radius:12px;
  }
  .music-ico{ width:20px; height:20px; }
}

/* =========================================================
   FIX: 320px–900px 文字不穿出屏幕（保持你原逻辑）
   ========================================================= */
.copy, .copy *{
  max-width:100%;
  overflow-wrap:anywhere;
  word-break:break-word;
  hyphens:auto;
}
.copy{ overflow:hidden; }

@media (max-width: 900px){
  .copy{
    flex: 0 0 calc(var(--txt-900) - var(--gap-900));
    max-width: calc(var(--txt-900) - var(--gap-900));
  }
  .media{
    flex: 0 0 var(--img-900);
    max-width: var(--img-900);
  }
  .copy h3{
    font-size: clamp(22px, 4.5vw, 30px);
    line-height:1.15;
  }
  .copy p{ line-height:1.75; }
}

@media (max-width: 420px){
  .copy{
    flex: 0 0 calc(var(--txt-320) - var(--gap-320) - 4px);
    max-width: calc(var(--txt-320) - var(--gap-320) - 4px);
  }
  .media{
    flex: 0 0 var(--img-320);
    max-width: var(--img-320);
  }
  .copy h3{
    font-size:18px;
    line-height:1.2;
    letter-spacing:-0.01em;
  }
  .idx{ font-size:11px; }
}

.video-links {
  margin-top: 18px;
  display: flex;
  gap: 30px;
  align-items: center;
}

.video-links a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0.75;
  transition: opacity 0.3s ease;
}

.video-links a:hover {
  opacity: 1;
}

/* 让“图片 + 视频链接”在同一列里上下排列 */
.media-stack{
  display: flex;
  flex-direction: column;
}

/* 链接在图片正下方，跟随图片宽度 */
.video-links{
  margin-top: 18px;
  display: flex;
  gap: 30px;
  align-items: center;
  width: 100%;
}

/* 链接样式（保持你当前高级暗黑风） */
.video-links a{
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0.75;
  transition: opacity 0.3s ease;
}

.video-links a:hover{
  opacity: 1;
}

.cta {
  display: inline-block;
  padding: 20px 50px;
  background: white;
  border-radius: 50px;
  text-align: center;
}