/* 彌散風（aurora / mesh gradient）白底櫥窗街：純白底 + 大面積淡彩模糊色團 + 細顆粒；櫥窗為白玻璃框，內部場景各自成風格，標題文字畫在場景圖裡。 */
:root {
  color-scheme: light;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC","PingFang HK","Hiragino Sans TC","Microsoft JhengHei","Noto Sans CJK TC","Noto Sans TC",Roboto,sans-serif;
  --bg:#ffffff;
  --text:#17141f;
  --text-2:rgba(23,20,31,.64);
  --text-3:rgba(23,20,31,.46);
  --line:rgba(23,20,31,.08);
  --glass:rgba(255,255,255,.55);
  --glass-strong:rgba(255,255,255,.85);
  --violet:#8b6cff; --coral:#ff7f61; --mint:#2fd1a8; --gold:#f5b942; --sky:#5aa9ff;
  --radius:28px;
}
*,*::before,*::after { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body { margin:0; font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.6; font-size:16px; -webkit-font-smoothing:antialiased; min-height:100vh; overflow-x:hidden; }
h1,h2,h3,p { margin:0; }
a { color:inherit; text-decoration:none; }
:focus-visible { outline:3px solid var(--coral); outline-offset:3px; border-radius:6px; }

/* ---- 彌散背景（白底淡彩） ---- */
.aurora { position:fixed; inset:-20vh -20vw; z-index:-2; overflow:hidden; pointer-events:none; }
.blob { position:absolute; border-radius:50%; filter:blur(90px); opacity:.5; will-change:transform; animation:drift 26s ease-in-out infinite alternate; }
.b1 { width:60vw; height:60vw; left:-10vw; top:-15vh; background:radial-gradient(circle at 40% 40%, var(--violet), transparent 65%); }
.b2 { width:50vw; height:50vw; right:-8vw; top:5vh; background:radial-gradient(circle at 50% 50%, var(--coral), transparent 65%); animation-delay:-8s; animation-duration:32s; opacity:.4; }
.b3 { width:55vw; height:55vw; left:20vw; bottom:-25vh; background:radial-gradient(circle at 50% 50%, var(--mint), transparent 65%); animation-delay:-14s; animation-duration:38s; opacity:.36; }
.b4 { width:35vw; height:35vw; right:15vw; bottom:5vh; background:radial-gradient(circle at 50% 50%, var(--sky), transparent 65%); animation-delay:-20s; animation-duration:29s; opacity:.4; }
.b5 { width:28vw; height:28vw; left:45vw; top:15vh; background:radial-gradient(circle at 50% 50%, var(--gold), transparent 65%); animation-delay:-4s; animation-duration:35s; opacity:.34; }
@keyframes drift {
  0%   { transform:translate(0,0) scale(1); }
  50%  { transform:translate(6vw,-4vh) scale(1.12); }
  100% { transform:translate(-5vw,6vh) scale(.94); }
}
.grain { position:fixed; inset:0; z-index:-1; pointer-events:none; opacity:.05; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:220px 220px; }

/* ---- 版面 ---- */
#app { max-width:1120px; margin:auto; padding:22px 32px 80px; }
header { display:flex; align-items:center; justify-content:space-between; gap:20px; padding:6px 0; }
.brand { display:inline-flex; align-items:center; gap:10px; font-weight:700; letter-spacing:-.2px; font-size:17px; }
.brand-dot { width:14px; height:14px; border-radius:50%; background:conic-gradient(from 200deg, var(--violet), var(--coral), var(--mint), var(--violet)); box-shadow:0 0 0 4px rgba(255,255,255,.9), 0 6px 18px rgba(139,108,255,.35); }
.glass-nav { display:flex; gap:4px; padding:4px; border-radius:999px; background:var(--glass); border:1px solid var(--line); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px); box-shadow:0 4px 18px rgba(23,20,31,.05); }
.glass-nav a { display:inline-flex; align-items:center; min-height:38px; padding:0 16px; border-radius:999px; font-size:14px; font-weight:600; color:var(--text-2); transition:background .2s,color .2s; }
.glass-nav a:hover { background:var(--glass-strong); color:var(--text); }

.hero { margin:72px 0 48px; max-width:720px; }
.eyebrow { font-size:12px; letter-spacing:2.5px; text-transform:uppercase; color:var(--text-3); font-weight:600; margin-bottom:16px; }
.hero h1 { font-size:clamp(34px,5.2vw,58px); line-height:1.12; letter-spacing:-1px; font-weight:800; text-wrap:balance; }
.hero h1 em { font-style:normal; background:linear-gradient(95deg, var(--gold) 0%, var(--coral) 45%, var(--violet) 100%); -webkit-background-clip:text; background-clip:text; color:transparent; }
.lede { margin-top:18px; font-size:17px; color:var(--text-2); max-width:540px; }

/* ---- 街道與櫥窗 ---- */
.street { position:relative; }
.street + .street { margin-top:60px; }
.street-head { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:22px; flex-wrap:wrap; }
.street-head .eyebrow { margin-bottom:8px; }
.street-head h2 { font-size:24px; font-weight:800; letter-spacing:-.5px; line-height:1.2; }
.street-naissy .street-head h2 { background:linear-gradient(95deg, var(--mint) 0%, var(--sky) 60%, var(--violet) 100%); -webkit-background-clip:text; background-clip:text; color:transparent; }
.street-head .note { font-size:14px; color:var(--text-3); max-width:460px; }
.street-head .note a { color:var(--text-2); font-weight:600; display:inline-flex; align-items:center; gap:4px; }
.street-head .note a i { font-style:normal; transition:transform .3s; }
.street-head .note a:hover { color:var(--text); }
.street-head .note a:hover i { transform:translateX(3px); }
.window-row { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; align-items:stretch; }
.sidewalk { height:1px; margin-top:34px; background:linear-gradient(90deg, transparent, rgba(23,20,31,.14) 20%, rgba(23,20,31,.14) 80%, transparent); position:relative; }
.sidewalk::after { content:""; position:absolute; left:0; right:0; top:1px; height:40px; background:linear-gradient(180deg, rgba(23,20,31,.025), transparent); pointer-events:none; }

.window { --accent:hsl(var(--hue) 80% 58%); display:flex; flex-direction:column; padding:12px; border-radius:var(--radius); background:linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.62)); border:1px solid rgba(255,255,255,.9); backdrop-filter:blur(22px); -webkit-backdrop-filter:blur(22px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,1), 0 1px 2px rgba(23,20,31,.04), 0 24px 60px rgba(40,30,80,.12);
  transition:transform .45s cubic-bezier(.2,.8,.2,1), box-shadow .45s; position:relative; isolation:isolate; }
.window::before { content:""; position:absolute; inset:-1px; border-radius:inherit; z-index:-1; opacity:0; transition:opacity .45s;
  background:radial-gradient(120% 80% at 50% 0%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 60%); filter:blur(26px); }
a.window:hover, a.window:focus-visible { transform:translateY(-8px); box-shadow:inset 0 1px 0 rgba(255,255,255,1), 0 1px 2px rgba(23,20,31,.04), 0 40px 80px rgba(40,30,80,.18); }
a.window:hover::before { opacity:1; }

.pane { position:relative; aspect-ratio:3/3.6; border-radius:calc(var(--radius) - 10px); overflow:hidden; background:#f1eef8; box-shadow:inset 0 0 0 1px rgba(23,20,31,.06); }
.pane::after { content:""; position:absolute; inset:0; pointer-events:none; border-radius:inherit;
  background:linear-gradient(118deg, rgba(255,255,255,.28) 0%, rgba(255,255,255,.08) 28%, transparent 46%); }
.scene { position:absolute; inset:0; }
.scene picture, .scene img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; object-position:center 50%; }
.scene img { transform:scale(1.03); transition:transform .8s cubic-bezier(.2,.8,.2,1), filter .8s; }
a.window:hover .scene img { transform:scale(1.08); }

/* C4D 風格：3D 渲染圖 + 頂部射燈，輕微漂浮。 */
.scene-c4d img { animation:bob 7s ease-in-out infinite; }
.scene-c4d .spot { position:absolute; left:50%; top:-20%; width:120%; height:70%; transform:translateX(-50%); background:radial-gradient(50% 60% at 50% 20%, rgba(255,255,255,.45), transparent 70%); mix-blend-mode:soft-light; pointer-events:none; }
@keyframes bob { 0%,100% { translate:0 0; } 50% { translate:0 -6px; } }

/* 霓虹風格：夜景招牌，懸停時燈管更亮，加一層呼吸光暈。 */
.scene-neon { background:#06110f; }
.scene-neon img { filter:saturate(1.05); }
a.window:hover .scene-neon img, .window-wip:hover .scene-neon img { filter:saturate(1.2) brightness(1.08); }
.scene-neon .glow { position:absolute; inset:0; pointer-events:none; mix-blend-mode:screen; opacity:.55; animation:breathe 4.5s ease-in-out infinite;
  background:radial-gradient(45% 32% at 50% 44%, hsl(var(--hue) 90% 60% / .55), transparent 70%); }
@keyframes breathe { 0%,100% { opacity:.4; } 50% { opacity:.7; } }

/* 水粉繪本風格：紙紋 + 暖邊暈影，懸停時微微傾斜。 */
.scene-gouache { background:#fbf4ea; }
.scene-gouache img { transition:transform .8s cubic-bezier(.2,.8,.2,1), filter .8s, rotate .8s cubic-bezier(.2,.8,.2,1); }
.window-wip:hover .scene-gouache img { rotate:-1.2deg; transform:scale(1.07); }
.scene-gouache .paper { position:absolute; inset:0; pointer-events:none; mix-blend-mode:multiply; opacity:.6;
  background:radial-gradient(120% 100% at 50% 50%, transparent 55%, hsl(var(--hue) 50% 60% / .35) 100%); }

/* 銘牌 */
.plate { padding:18px 10px 8px; display:flex; flex-direction:column; gap:6px; flex:1; }
.plate-top { display:flex; justify-content:space-between; align-items:center; gap:10px; }
.plate h3 { font-size:17px; font-weight:700; letter-spacing:-.2px; line-height:1.4; }
.desc { font-size:14px; color:var(--text-3); flex:1; }
.credit { margin-top:10px; align-self:flex-start; display:inline-flex; align-items:center; gap:7px; font-size:12px; letter-spacing:.4px; color:var(--text-2); padding:4px 10px 4px 6px; border-radius:999px; background:rgba(255,255,255,.7); border:1px solid var(--line); }
.credit b { width:14px; height:14px; border-radius:50%; background:conic-gradient(from 120deg, var(--mint), var(--sky), var(--violet), var(--mint)); box-shadow:0 0 0 2px rgba(255,255,255,.9); }
.host { margin-top:14px; align-self:flex-start; font-size:13px; color:var(--text-3); font-variant-numeric:tabular-nums; display:inline-flex; align-items:center; gap:6px; }
.host i { font-style:normal; transition:transform .3s; }
a.window:hover .host { color:var(--accent); }
a.window:hover .host i { transform:translateX(4px); }
.pill { font-size:12px; padding:4px 11px; border-radius:999px; border:1px solid var(--line); color:var(--text-2); background:rgba(23,20,31,.04); white-space:nowrap; letter-spacing:.5px; }
.pill-live { color:#0f7a5a; border-color:rgba(47,209,168,.4); background:rgba(47,209,168,.12); }
.pill-live::before { content:""; display:inline-block; width:7px; height:7px; border-radius:50%; background:var(--mint); margin-right:7px; vertical-align:1px; box-shadow:0 0 0 0 rgba(47,209,168,.6); animation:pulse 2.4s infinite; }
@keyframes pulse { 0% { box-shadow:0 0 0 0 rgba(47,209,168,.6); } 70% { box-shadow:0 0 0 7px rgba(47,209,168,0); } 100% { box-shadow:0 0 0 0 rgba(47,209,168,0); } }
.window-wip { cursor:default; }

footer { margin-top:64px; padding-top:20px; border-top:1px solid var(--line); font-size:13px; color:var(--text-3); display:flex; gap:8px; flex-wrap:wrap; }
.sep { opacity:.5; }

@media (max-width:640px) {
  #app { padding:16px 18px 60px; }
  .hero { margin:48px 0 32px; }
  .window-row { grid-template-columns:1fr; max-width:420px; margin:auto; }
  .street + .street { margin-top:44px; }
  .street-head { align-items:flex-start; flex-direction:column; gap:8px; max-width:420px; margin-left:auto; margin-right:auto; }
  .blob { filter:blur(70px); }
}
@media (prefers-reduced-motion: reduce) {
  .blob, .scene-c4d img, .scene-neon .glow, .pill-live::before { animation:none; }
  .window, .scene img, .host i, .street-head .note a i { transition:none; }
}