/* =============================================================
   JET OPTO — Hero 概念審閱框架（9 變體共用）
   編輯級排版系統 + 審閱切換 chrome
   ============================================================= */
:root {
  --ent: #F06FA7; --ent-rgb: 240, 111, 167;
  --ckpt: #38BDF8; --ckpt-rgb: 56, 189, 248;
  --safe: #34D399; --safe-rgb: 52, 211, 153;

  --font-sans: "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei",
               -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-mono: "Cascadia Code", "SF Mono", Consolas, "Courier New", monospace;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --gutter: clamp(22px, 5vw, 84px);
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: var(--font-sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
h1, h2, p { margin: 0; }

/* ---------- 編輯排版 ---------- */
.kicker {
  font-family: var(--font-mono);
  font-size: clamp(11px, 1vw, 13px); font-weight: 500;
  letter-spacing: .34em; text-transform: uppercase;
  display: flex; align-items: center; gap: 14px;
}
.kicker::before { content: ""; width: 40px; height: 1px; background: currentColor; opacity: .6; }
.display {
  font-size: clamp(40px, 6.2vw, 92px);
  font-weight: 900; line-height: 1.08; letter-spacing: -.02em;
}
.display .sl { display: block; overflow: hidden; }
.display .sl i { display: inline-block; font-style: normal; transform: translateY(112%); }
html.no-motion .display .sl i { transform: none; }
.lead { font-size: clamp(14.5px, 1.25vw, 17.5px); line-height: 1.85; }
.lead strong { font-weight: 700; }

/* ---------- 按鈕 ---------- */
.hbtn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 15px 30px; border-radius: 99px;
  font-size: 15px; font-weight: 700; letter-spacing: .02em;
  border: 1.5px solid currentColor;
  transition: transform .45s var(--ease-out), box-shadow .45s, background .3s, color .3s;
}
.hbtn:hover { transform: translateY(-3px); }
.hbtn .arr { transition: transform .4s var(--ease-out); }
.hbtn:hover .arr { transform: translateX(5px); }

/* ---------- 工程讀數（右緣直列） ---------- */
.readout {
  position: absolute; right: clamp(18px, 3.2vw, 48px); top: 50%; transform: translateY(-50%);
  z-index: 12; display: grid; gap: clamp(18px, 3.2vh, 30px);
  font-family: var(--font-mono); text-align: right;
}
.readout .v { font-size: clamp(17px, 1.7vw, 24px); font-weight: 600; letter-spacing: .02em; }
.readout .k { font-size: 10px; letter-spacing: .22em; text-transform: uppercase; opacity: .55; margin-top: 3px; }

/* ---------- 審閱頂欄 ---------- */
.hr-top {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  pointer-events: none;
}
.hr-top > * { pointer-events: auto; }
.hr-top .brand img { height: 36px; width: auto; }
.hr-lang {
  display: flex; gap: 2px; padding: 3px; border-radius: 99px;
  border: 1px solid currentColor;
}
.hr-lang a {
  padding: 5px 13px; border-radius: 99px;
  font-family: var(--font-mono); font-size: 12px; font-weight: 600; letter-spacing: .1em;
  opacity: .55; transition: opacity .3s, background .3s, color .3s;
}
.hr-lang a:hover { opacity: 1; }
.hr-lang a.on { opacity: 1; }

/* ---------- 底部概念 dock ---------- */
.hr-dock {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  z-index: 100;
  display: flex; align-items: center; gap: 4px;
  padding: 6px;
  border-radius: 99px;
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  font-family: var(--font-mono);
  box-shadow: 0 12px 40px rgba(10, 14, 20, .18);
}
.hr-dock .lbl { font-size: 10px; letter-spacing: .22em; text-transform: uppercase; opacity: .55; padding: 0 12px 0 14px; }
.hr-dock a {
  padding: 9px 16px; border-radius: 99px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .08em;
  opacity: .6; transition: opacity .3s, background .3s, color .3s;
  white-space: nowrap;
}
.hr-dock a:hover { opacity: 1; }
.hr-dock a.on { opacity: 1; }

/* 亮色/暗色主題掛鉤（各 hero 蓋掉） */
.theme-light .hr-dock { background: rgba(255, 255, 255, .72); border: 1px solid rgba(15, 22, 30, .1); color: #10161e; }
.theme-light .hr-dock a.on, .theme-light .hr-lang a.on { background: #10161e; color: #fff; opacity: 1; }
.theme-light .hr-lang { border-color: rgba(15, 22, 30, .22); color: #10161e; }
.theme-dark .hr-dock { background: rgba(14, 18, 24, .6); border: 1px solid rgba(255, 255, 255, .12); color: #f2f5f8; }
.theme-dark .hr-dock a.on, .theme-dark .hr-lang a.on { background: #f2f5f8; color: #10161e; opacity: 1; }
.theme-dark .hr-lang { border-color: rgba(255, 255, 255, .28); color: #f2f5f8; }

/* SCROLL 提示 */
.scroll-cue {
  position: absolute; left: var(--gutter); bottom: 26px; z-index: 12;
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .34em; text-transform: uppercase;
  opacity: .55;
}
.scroll-cue i {
  width: 44px; height: 1px; background: currentColor; position: relative; overflow: visible;
}
.scroll-cue i::after {
  content: ""; position: absolute; right: -2px; top: -2.5px;
  width: 6px; height: 6px; border-top: 1px solid currentColor; border-right: 1px solid currentColor;
  transform: rotate(45deg);
}

@media (max-width: 700px) {
  .readout { display: none; }
  .hr-dock { max-width: calc(100vw - 24px); overflow-x: auto; }
  .hr-dock .lbl { display: none; }
  .scroll-cue { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}