/* =========================================
   皮沙發工廠：子頁共用樣式（shop.html、game.html）
   顏色、字型、頂部列、終端機視窗、按鈕都跟首頁一致。
========================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0b0710;
    --surface: #140c19;
    --surface-deep: #0d0610;
    --text: #f4dce4;
    --text-strong: #ffffff;
    --muted: #a68a96;
    --pink: #ff2a7f;
    --blue: #00f0ff;
    --amber: #ffb347;
    --green: #3dff9a;
    --steam: #66c0f4;
    --line-pink: rgba(255, 42, 127, 0.32);
    --line-blue: rgba(0, 240, 255, 0.32);
    --font-mono: 'JetBrains Mono', ui-monospace, Consolas, 'Microsoft JhengHei', monospace;
    --font-body: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', system-ui, sans-serif;
    --bar-h: 60px;
    --cut: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
html[data-lang="hans"] { --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif; }
html[data-region="cn"] .only-tw, html[data-region="tw"] .only-cn { display: none !important; }
html.zh-pending body { visibility: hidden; animation: zh-failsafe 0s linear 1.5s forwards; }
@keyframes zh-failsafe { to { visibility: visible; } }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--bar-h) + 16px); overflow-x: clip; -webkit-text-size-adjust: 100%; }
body {
    min-height: 100vh;
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 42, 127, 0.16), transparent 70%),
        radial-gradient(ellipse 60% 40% at 100% 40%, rgba(0, 240, 255, 0.06), transparent 70%),
        linear-gradient(rgba(255, 42, 127, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.035) 1px, transparent 1px);
    background-size: auto, auto, 32px 32px, 32px 32px;
    background-attachment: fixed, fixed, scroll, scroll;
}
body::after {
    content: '';
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 30000;
    background:
        radial-gradient(ellipse at center, transparent 60%, rgba(0, 0, 0, 0.45) 100%),
        repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.12) 0 1px, transparent 1px 3px);
    opacity: 0.6;
}
::selection { background: var(--pink); color: #000; }
a { color: var(--pink); text-decoration: none; transition: color 0.2s, text-shadow 0.2s; }
a:hover { color: var(--blue); text-shadow: 0 0 8px var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.mono { font-family: var(--font-mono); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.lang-zh { color: var(--text); }
.lang-en { color: var(--muted); font-size: 0.9rem; line-height: 1.7; }
html[data-region="cn"] .lang-en.long { display: none; }

/* ---------- 頂部列 ---------- */
.site-bar {
    position: sticky; top: 0; z-index: 9999;
    height: var(--bar-h);
    background: rgba(11, 7, 16, 0.88);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    border-bottom: 1px solid var(--line-pink);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
}
.site-bar-inner {
    max-width: 1120px; height: 100%;
    margin: 0 auto; padding: 0 1.5rem;
    display: flex; align-items: center; gap: 1rem;
}
.site-back {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-mono); font-weight: 800; font-size: 0.82rem; letter-spacing: 0.5px;
    color: var(--blue);
    white-space: nowrap;
}
.site-back, .site-nav a { min-height: 40px; display: inline-flex; align-items: center; }
.site-back b { color: var(--pink); font-family: var(--font-body); font-weight: 900; text-shadow: 0 0 10px rgba(255, 42, 127, 0.5); }
.site-nav { display: flex; gap: 0.2rem; margin-left: auto; font-family: var(--font-mono); }
.site-nav a {
    position: relative;
    padding: 0.4rem 0.7rem;
    color: var(--muted);
    font-size: 0.78rem; font-weight: 700; letter-spacing: 0.5px;
}
.site-nav a:hover { color: var(--text-strong); text-shadow: none; }
.site-nav a[aria-current="page"] { color: var(--text-strong); }
.site-nav a[aria-current="page"]::after {
    content: ''; position: absolute; left: 0.7rem; right: 0.7rem; bottom: 0.15rem;
    height: 2px; background: var(--blue); box-shadow: 0 0 8px var(--blue);
}
.lang-switch { display: inline-flex; border: 1px solid var(--line-blue); flex-shrink: 0; }
.lang-switch button {
    min-width: 38px; min-height: 38px;
    background: none; border: none;
    color: var(--muted);
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Microsoft JhengHei', sans-serif;
    font-size: 0.85rem; font-weight: 700;
    cursor: pointer;
}
.lang-switch button:hover { color: var(--text-strong); }
.lang-switch button[aria-pressed="true"] { background: var(--blue); color: #000; }

/* ---------- 版面 ---------- */
.page { max-width: 1060px; margin: 0 auto; padding: 2.4rem 1.5rem 4rem; display: flex; flex-direction: column; gap: 2.4rem; }

.terminal-window { position: relative; background-color: rgba(8, 4, 10, 0.92); border: 1px solid var(--line-pink); }
.terminal-window::after {
    content: ''; position: absolute; top: 6px; left: 6px; right: -6px; bottom: -6px;
    border: 1px solid rgba(0, 240, 255, 0.28); z-index: -1; pointer-events: none;
}
.window-header {
    display: flex; justify-content: space-between; align-items: center; gap: 0.75rem;
    padding: 0.55rem 1.1rem;
    background: linear-gradient(90deg, rgba(255, 42, 127, 0.13), rgba(255, 42, 127, 0.03));
    border-bottom: 1px solid var(--line-pink);
    font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.5px;
}
.window-dots { display: inline-flex; gap: 6px; margin-right: 0.6rem; vertical-align: middle; }
.window-dots i { width: 8px; height: 8px; border: 1px solid var(--pink); display: block; }
.window-dots i:first-child { background: var(--pink); box-shadow: 0 0 6px var(--pink); }
.window-path { display: flex; align-items: center; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--blue); }
.window-mode { white-space: nowrap; flex-shrink: 0; color: var(--muted); }
.window-content { padding: 2.2rem 2.2rem 2.4rem; }

.sys-tag {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 800; letter-spacing: 1px;
    color: var(--pink);
    border: 1px solid var(--line-pink);
    background: rgba(255, 42, 127, 0.08);
    padding: 0.2rem 0.65rem;
    margin-bottom: 1.1rem;
}
.sys-tag::before { content: ''; width: 6px; height: 6px; background: var(--pink); box-shadow: 0 0 8px var(--pink); animation: blink 1.6s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }
.page-title {
    font-weight: 900;
    font-size: clamp(1.8rem, 4.4vw, 2.6rem);
    line-height: 1.2;
    color: var(--text-strong);
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(255, 42, 127, 0.7), 2px 2px 0 rgba(0, 240, 255, 0.85);
}
.page-title small {
    display: block;
    font-family: var(--font-mono);
    font-size: clamp(0.8rem, 1.7vw, 0.95rem);
    font-weight: 800; letter-spacing: 2px;
    color: var(--blue); text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
    margin-top: 0.5rem;
}
.section-title {
    display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.2rem 0.8rem;
    margin-bottom: 1.2rem; padding-bottom: 0.8rem;
    border-bottom: 1px dashed rgba(0, 240, 255, 0.28);
}
.sec-no { font-family: var(--font-mono); font-weight: 800; font-size: 0.8rem; color: #000; background: var(--blue); padding: 0.05rem 0.45rem; box-shadow: 0 0 14px rgba(0, 240, 255, 0.35); align-self: center; }
.sec-zh { font-size: 1.3rem; font-weight: 900; color: var(--text-strong); letter-spacing: 1px; }
.sec-en { font-family: var(--font-mono); font-size: 0.76rem; font-weight: 800; letter-spacing: 1.5px; color: var(--blue); }

.cyber-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    min-height: 44px;
    background: rgba(255, 42, 127, 0.06);
    color: var(--pink);
    border: 1px solid var(--pink);
    padding: 0.55rem 1.1rem;
    font-family: var(--font-mono); font-weight: 800; font-size: 0.85rem; letter-spacing: 0.4px;
    cursor: pointer;
    clip-path: var(--cut);
    transition: background-color 0.15s, color 0.15s, box-shadow 0.15s, opacity 0.15s;
}
.cyber-btn:hover:not(:disabled) { background: var(--pink); color: #000; text-shadow: none; box-shadow: 0 0 20px var(--pink); }
.cyber-btn:disabled { opacity: 0.4; border-color: var(--muted); color: var(--muted); cursor: not-allowed; }
.cyber-btn.blue { color: var(--blue); border-color: var(--blue); background: rgba(0, 240, 255, 0.05); }
.cyber-btn.blue:hover:not(:disabled) { background: var(--blue); color: #000; box-shadow: 0 0 20px rgba(0, 240, 255, 0.6); }

.back-to-top {
    position: fixed;
    right: max(1.25rem, env(safe-area-inset-right));
    bottom: max(1.25rem, env(safe-area-inset-bottom));
    z-index: 999;
    width: 46px; height: 46px;
    display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
    background: rgba(11, 7, 16, 0.82);
    color: var(--blue);
    border: 1px solid var(--blue);
    font-family: var(--font-mono); font-size: 0.58rem; font-weight: 800; letter-spacing: 1px; line-height: 1.1;
    cursor: pointer;
    opacity: 0; transform: translateY(10px); pointer-events: none;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    transition: opacity 0.25s, transform 0.25s, background-color 0.15s, color 0.15s;
}
.back-to-top b { font-size: 1rem; }
.back-to-top.visible { opacity: 0.9; transform: none; pointer-events: auto; }
.back-to-top:hover { opacity: 1; background: var(--blue); color: #000; }

.site-footer {
    border-top: 1px solid var(--line-pink);
    padding-top: 1.8rem;
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem;
    font-size: 0.84rem; color: var(--muted);
}
.site-footer .sig { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 1px; color: var(--pink); margin-top: 0.3rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; }
.site-footer nav a { color: var(--muted); display: inline-flex; align-items: center; min-height: 40px; }
.site-footer nav a:hover { color: var(--blue); }

@media (max-width: 768px) {
    :root { --bar-h: 56px; }
    .site-bar-inner { padding: 0 0.9rem; gap: 0.5rem; }
    .site-back span { display: none; }
    .site-nav a { padding: 0.4rem 0.45rem; font-size: 0.72rem; }
    .site-nav a .en { display: none; }
    .page { padding: 1.4rem 1rem 3rem; gap: 2rem; }
    .window-header { padding: 0.5rem 0.8rem; font-size: 0.68rem; }
    .window-content { padding: 1.4rem 1.1rem 1.6rem; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}