/* GFlyer 產品網站：和 jetpiggy.com、ginput.jetpiggy.com 同一套墨線語言；GFlyer 用飛豬風鏡的藍色。暫時只有私隱政策和 404。 */
/* 「JetPiggy GFlyer UI」是 jf open 粉圓的子集：原字型的授權保留了名稱，子集不可以用（見 fonts/README.txt）。 */
@font-face { font-family: "JetPiggy GFlyer UI"; src: url(fonts/JetPiggyGFlyerUI.woff2) format("woff2"); font-display: swap; }
@font-face { font-family: "Nunito"; src: url(fonts/Nunito.woff2) format("woff2"); font-weight: 300 900; font-display: swap; }

:root {
  --paper: #F7F3E8;
  --paper-2: #FFFDF6;
  --ink: #161616;
  --muted: #5B564E;
  --pink: #F3A6A4;
  --pink-soft: #F9D9D8;
  --red: #E3312D;
  --red-text: #C4201B;
  --blue: #5DA6E8;
  --blue-text: #2A63A5;
  --blue-soft: #D3E6F8;
  --zh: "JetPiggy GFlyer UI", "Nunito", system-ui, -apple-system, "PingFang HK", "Microsoft JhengHei", sans-serif;
  --body: "Nunito", "JetPiggy GFlyer UI", system-ui, -apple-system, "PingFang HK", "Microsoft JhengHei", sans-serif;
  --wobble: 255px 18px 225px 18px / 18px 225px 18px 255px;
  --wobble-2: 18px 160px 18px 150px / 140px 18px 160px 18px;
  --gutter: clamp(16px, 4vw, 48px);
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; overflow-x: clip; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  mix-blend-mode: multiply;
  opacity: .55;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.25  0 0 0 0 0.2  0 0 0 0 0.12  0 0 0 0.16 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-text); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--red-text); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--zh); font-weight: 400; line-height: 1.25; margin: 0; }
p { margin: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* 導航：飛豬眨眼的臉 + GFlyer；右邊只有語言 */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 var(--gutter);
  background: var(--paper);
  box-shadow: 0 3px 0 var(--ink);
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-family: var(--body); font-weight: 900; font-size: 24px; letter-spacing: -.01em; }
.nav-brand img { width: 44px; height: 44px; }
.nav-brand b { font-weight: 900; color: var(--blue-text); }
.nav-right { display: flex; align-items: center; gap: clamp(16px, 2.4vw, 32px); }
.nav ul { display: flex; gap: clamp(14px, 2.2vw, 32px); list-style: none; margin: 0; padding: 0; font-family: var(--zh); font-size: 18px; }
.nav ul li, .nav ul a { white-space: nowrap; }
.nav ul a { color: var(--ink); text-decoration: none; border-bottom: 3px solid transparent; padding-bottom: 2px; -webkit-tap-highlight-color: transparent; }
@media (hover: hover) { .nav ul a:hover { border-bottom-color: var(--red); } }
.nav .short { display: none; }
.nav .by { font-family: var(--zh); font-size: 15px; color: var(--muted); text-decoration: none; white-space: nowrap; }
.nav .by:hover { color: var(--red-text); }

/* 按鈕（404） */
.btn {
  display: inline-block;
  font-family: var(--zh);
  font-size: 19px;
  line-height: 1.3;
  color: #fff;
  background: var(--ink);
  text-decoration: none;
  padding: 13px 26px;
  border: 3px solid var(--ink);
  border-radius: var(--wobble-2);
  box-shadow: 4px 4px 0 var(--blue);
  transition: box-shadow .15s ease, transform .15s ease;
}
.btn:hover { color: #fff; box-shadow: 6px 6px 0 var(--blue); transform: translate(-1px, -1px); }
.btn:active { box-shadow: 0 0 0 var(--blue); transform: translate(4px, 4px); transition-duration: .08s; }

/* 私隱政策頁 */
.doc { max-width: 780px; margin: 0 auto; padding: clamp(32px, 5vw, 64px) var(--gutter) 40px; }
.doc .lang { display: flex; gap: 18px; font-family: var(--zh); font-size: 17px; margin-bottom: 28px; }
/* 中文標題只在空格斷行，「飛豬人」不會斷開；不用 balance，窄屏才會是「GFlyer - 飛豬人」一行、「私隱政策」一行 */
.doc h1 { font-size: clamp(32px, 3.6vw, 44px); margin-bottom: 6px; word-break: keep-all; }
.doc h1 + .muted { margin-bottom: 28px; }
.doc h2 { font-size: 24px; margin: 44px 0 10px; display: inline-block; position: relative; }
.doc h2::after {
  content: "";
  position: absolute;
  left: -2px; right: -2px; bottom: 0;
  height: 8px;
  z-index: -1;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 14' preserveAspectRatio='none'><path d='M2 9 C 60 4, 120 12, 200 7 S 340 3, 398 8' stroke='%235DA6E8' stroke-width='7' fill='none' stroke-linecap='round' opacity='.7'/></svg>") no-repeat;
  background-size: 100% 100%;
}
.doc p { margin: 0 0 14px; line-height: 1.8; }
.doc ul { padding-left: 1.4em; margin: 0 0 14px; }
.doc li { margin-bottom: 8px; line-height: 1.75; }
.doc li > ul { margin: 8px 0 0; }
.doc li::marker { color: var(--blue-text); }
.doc strong { font-weight: 800; }
.doc a { overflow-wrap: anywhere; }
.doc code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .86em; background: var(--paper-2); border: 1.5px solid rgba(22, 22, 22, .18); padding: 1px 6px; border-radius: 5px; overflow-wrap: anywhere; }
.doc .muted { color: var(--muted); font-family: var(--zh); }
html[lang="en"] .doc h2 { font-family: var(--body); font-weight: 800; }

/* 「重點」：墨線框的便條，政策其餘部分照常排 */
.doc .key {
  margin: 8px 0 12px;
  padding: clamp(18px, 3vw, 30px) clamp(20px, 3.4vw, 36px) clamp(10px, 2vw, 18px);
  border: 3.5px solid var(--ink);
  border-radius: var(--wobble);
  background: rgba(255, 253, 246, .7);
  box-shadow: 5px 5px 0 var(--blue-soft);
  isolation: isolate; /* 標題的底線（z-index: -1）畫在框的底色上面 */
}
.doc .key h2 { margin-top: 0; }
.doc .key ul { margin-bottom: 8px; }

/* 頁尾 */
.footer {
  border-top: 3px solid var(--ink);
  margin-top: clamp(56px, 8vw, 112px);
  padding: 28px 0 44px;
  font-family: var(--zh);
  font-size: 16px;
  color: var(--muted);
}
.footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px 28px; flex-wrap: wrap; }
.footer a { color: var(--muted); }
.footer .links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer .fine { flex-basis: 100%; margin: 0; font-size: 15px; }

/* 404 */
.lost { min-height: calc(100vh - 68px); display: grid; place-items: center; text-align: center; padding: 60px var(--gutter); }
.lost img { width: min(520px, 80vw); margin: 0 auto 10px; }
.lost h1 { font-size: clamp(30px, 4vw, 48px); word-break: keep-all; }
.lost h1 b { font-family: var(--body); font-weight: 900; color: var(--red-text); margin-right: 12px; }
.lost p { font-size: 19px; margin: 10px 0 28px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

/* 窄屏 */
@media (max-width: 899px) {
  body { font-size: 17px; }
  .nav { height: 62px; }
  .nav-brand { font-size: 21px; }
  .nav-brand img { width: 38px; height: 38px; }
  .nav ul { font-size: 16px; gap: 12px; }
  .nav .long { display: none; }
  .nav .short { display: inline; }
  .nav .by { display: none; }
  .doc h2 { font-size: 22px; margin-top: 38px; }
  .lost { min-height: calc(100vh - 62px); }
  .btn { font-size: 18px; padding: 12px 22px; }
}

/* 錨點跳轉時不被固定導航遮住 */
[id] { scroll-margin-top: 88px; }