/* =========================================================
   Norro 官網首頁（../index.html）
   配色和模擬器一致：深色底、藍色重點、亮黃色代表「亮起來的 1」
   ========================================================= */
:root{
  --bg:#0b0f17; --bg2:#0f1522; --panel:#151d2e; --panel2:#1a2334;
  --line:#26324a; --line-soft:#1e2839;
  --txt:#e6ecf8; --dim:#a3b0cb; --faint:#6f7e9c;
  --accent:#4ea1ff; --accent2:#6db3ff; --hot:#ffc247; --hot-soft:#ffe3a1;
  --r:14px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font:16px/1.7 "Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
[hidden]{display:none !important}
.wrap{width:min(1160px,100% - 40px);margin:0 auto}
.narrow{width:min(780px,100% - 40px)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- 標誌（和模擬器同一個 NOR 閘） ---------- */
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;font-weight:800;letter-spacing:.8px;font-size:18px}
.logo-mark{width:32px;height:24px;overflow:visible;flex:none}
.logo-mark .pin{fill:none;stroke:var(--hot);stroke-width:1.8;stroke-linecap:round}
.logo-mark .gate{fill:rgba(255,194,71,.18);stroke:var(--hot);stroke-width:2.2;stroke-linejoin:round;filter:drop-shadow(0 0 3px rgba(255,194,71,.6))}
.logo-mark .led{fill:var(--hot-soft);filter:drop-shadow(0 0 3px #ffc247) drop-shadow(0 0 7px rgba(255,170,40,.8))}

/* ---------- 按鈕 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:700;
  border-radius:10px;border:1px solid var(--line);padding:10px 18px;transition:.15s;white-space:nowrap}
.btn.sm{padding:7px 14px;font-size:14px}
.btn.lg{padding:13px 24px;font-size:16px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#08111f;box-shadow:0 6px 24px rgba(78,161,255,.25)}
.btn.primary:hover{background:var(--accent2)}
.btn.ghost{background:rgba(255,255,255,.02);color:var(--txt)}
.btn.ghost:hover{border-color:var(--accent);background:rgba(78,161,255,.08)}

/* ---------- 頂列 ---------- */
.nav{position:sticky;top:0;z-index:10;background:rgba(11,15,23,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft)}
.nav-in{display:flex;align-items:center;gap:24px;height:62px}
.nav-links{display:flex;gap:22px;margin-left:auto}
.nav-links a{text-decoration:none;color:var(--dim);font-size:14.5px}
.nav-links a:hover{color:var(--txt)}
.nav-end{display:flex;align-items:center;gap:12px}
.lang{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang button{background:none;border:0;color:var(--faint);font:700 13px/1 inherit;padding:7px 10px;cursor:pointer}
.lang button.on{background:var(--accent);color:#08111f}

/* ---------- 主視覺 ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 40px;
  background:
    radial-gradient(600px 380px at 78% 28%, rgba(255,194,71,.10), transparent 70%),
    radial-gradient(700px 420px at 10% 0%, rgba(78,161,255,.12), transparent 70%),
    radial-gradient(circle, rgba(163,176,203,.10) 1px, transparent 1.5px) 0 0/22px 22px,
    var(--bg)}
.hero-in{display:grid;grid-template-columns:1fr 1.08fr;gap:48px;align-items:center}
.eyebrow{margin:0 0 14px;color:var(--hot);font-weight:700;letter-spacing:1.5px;font-size:13.5px}
h1{margin:0;font-size:clamp(36px,5.2vw,60px);line-height:1.15;font-weight:900;letter-spacing:.5px}
h1 .glow{color:var(--hot);text-shadow:0 0 18px rgba(255,194,71,.55),0 0 42px rgba(255,170,40,.35)}
.lead{margin:20px 0 0;color:var(--dim);font-size:18px;max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-cta.center{justify-content:center}
.hero-note{margin:16px 0 0;color:var(--faint);font-size:14px}

/* 瀏覽器外框 */
.frame{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--bg2);
  box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.02)}
.frame-bar{display:flex;align-items:center;gap:7px;height:34px;padding:0 14px;background:var(--panel);border-bottom:1px solid var(--line)}
.frame-bar i{width:10px;height:10px;border-radius:50%;background:#34405a}
.frame-bar i:first-child{background:#ff6b6b99}.frame-bar i:nth-child(2){background:#ffc24799}.frame-bar i:nth-child(3){background:#5fd38d99}
.frame-bar span{margin-left:10px;font-size:12.5px;color:var(--faint)}
.hero-demo{margin:0}
.hero-demo iframe{display:block;width:100%;height:380px;border:0;background:var(--bg)}
.hero-demo figcaption{margin-top:12px;text-align:center;color:var(--dim);font-size:14px}
.hero-demo figcaption b{color:var(--hot)}

.pills{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;list-style:none;padding:0;margin-top:48px}
.pills li{border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-size:13.5px;color:var(--dim);background:rgba(255,255,255,.02)}
.pills li::before{content:'';display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--hot);
  box-shadow:0 0 8px var(--hot);margin-right:8px;vertical-align:1px}

/* ---------- 區塊 ---------- */
.sec{padding:88px 0}
.sec.alt{background:var(--bg2);border-block:1px solid var(--line-soft)}
h2{margin:0;font-size:clamp(26px,3.4vw,38px);line-height:1.25;font-weight:800;text-align:center}
.sub{margin:12px auto 0;color:var(--dim);text-align:center;max-width:40em;text-wrap:balance}
h1,h2,.lead,.shot figcaption,.hero-demo figcaption{text-wrap:balance}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;transition:.2s}
.card:hover{border-color:#3a4c72;transform:translateY(-2px)}
.card h3{margin:14px 0 6px;font-size:18px}
.card p{margin:0;color:var(--dim);font-size:15px}
.ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(78,161,255,.12);color:var(--accent);border:1px solid rgba(78,161,255,.25)}
.ic svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ic svg .fill{fill:currentColor;stroke:none}

/* 畫面展示 */
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:32px 0 26px}
.tabs button{background:var(--panel);border:1px solid var(--line);color:var(--dim);font:600 14.5px/1 inherit;
  padding:10px 16px;border-radius:999px;cursor:pointer}
.tabs button:hover{color:var(--txt)}
.tabs button.on{background:var(--accent);border-color:var(--accent);color:#08111f}
.shot{margin:0 auto;max-width:1040px}
.shot figcaption{margin-top:16px;text-align:center;color:var(--dim)}

/* 三步 */
.steps{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.steps li{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.steps .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--hot);color:#2a1c02;
  font-weight:900;box-shadow:0 0 14px rgba(255,194,71,.5)}
.steps b{display:block;margin:14px 0 4px;font-size:18px}
.steps p{margin:0;color:var(--dim);font-size:15px}

/* 常見問題 */
#faq h2{margin-bottom:30px}
details{border:1px solid var(--line);border-radius:12px;background:var(--panel);margin-bottom:10px}
summary{cursor:pointer;padding:16px 18px;font-weight:700;list-style:none;display:flex;align-items:center;gap:10px}
summary::-webkit-details-marker{display:none}
summary::after{content:'+';margin-left:auto;color:var(--faint);font-size:20px;line-height:1}
details[open] summary::after{content:'−'}
details p{margin:0;padding:0 18px 16px;color:var(--dim)}
details a{color:var(--accent)}

/* 最後 */
.final{padding:90px 0;text-align:center;
  background:radial-gradient(520px 260px at 50% 40%, rgba(255,194,71,.10), transparent 70%), var(--bg)}
.final p{color:var(--dim);margin:12px 0 0}

/* 頁尾 */
.foot{border-top:1px solid var(--line-soft);padding:36px 0;background:var(--bg2)}
.foot-in{display:grid;grid-template-columns:1fr auto;gap:10px 30px;align-items:center}
.foot-brand p{margin:8px 0 0;color:var(--faint);font-size:14px}
.foot-links{display:flex;flex-wrap:wrap;gap:20px}
.foot-links a{color:var(--dim);text-decoration:none;font-size:14.5px}
.foot-links a:hover{color:var(--txt)}
.copy{grid-column:1/-1;margin:14px 0 0;color:var(--faint);font-size:13px}

/* ---------- 窄螢幕 ---------- */
@media (max-width:920px){
  .hero-in{grid-template-columns:1fr}
  .hero{padding-top:48px}
  .grid3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav-links{display:none}
  .nav-end{margin-left:auto}
  .grid3{grid-template-columns:1fr}
  .sec{padding:64px 0}
  .lead{font-size:16.5px}
  .hero-demo iframe{height:320px}
  .foot-in{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} .card{transition:none} }