/*
 * 玩法页（/plays.html、/plays/<id>.html，8 语言，scripts/build_plays_pages.py 生成）。
 * 页头 / 页脚 / breadcrumb 沿用 css/style.css；这里只管 .kp-*。
 * 少字（founder）：常驻只有标题、一句介绍、素材短语、每步一句；细节都在可展开的 <details> 里。
 */
.kp { --kp-ink: #1C1814; --kp-ink2: #5C544B; --kp-line: #E6DCC6; --kp-cream: #FFF8E8; --kp-green: #0F7B66; }
/* 容器 / 面包屑：和 animate-drawing.html 等落地页一致（那边写在页内 <style> 里） */
.kp.lp-container { max-width: 1040px; margin: 0 auto; padding: 28px 20px 40px; box-sizing: border-box; width: 100%; min-width: 0; }
.kp .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 0.9em; color: #666; margin-bottom: 18px; }
.kp .breadcrumb a { color: var(--kp-green); text-decoration: none; }
.kp .breadcrumb a:hover { text-decoration: underline; }
.kp .breadcrumb-separator { color: #ccc; }
.kp h1 { margin: 0; font-size: 1.9rem; line-height: 1.2; color: var(--kp-ink); letter-spacing: -0.01em; }
.kp-h { margin: 0 0 10px; font-size: 1.05rem; font-weight: 800; color: var(--kp-ink); }
.kp-lead { margin: 8px 0 16px; font-size: 1rem; line-height: 1.5; color: var(--kp-ink2); }

/* 首屏：示例（画 → 视频）+ 名字 / 一句 / 做同款 / 需要准备 */
.kp-hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 28px; align-items: start; margin: 12px 0 32px; }
/* 示例：视频大图占满整列，原画小图叠在左下角；点小图两者交换（js/plays.js），位置 / 大小过渡动画 */
.kp-media { position: relative; width: 100%; aspect-ratio: var(--ar, 4 / 3); }
.kp-slot { position: absolute; overflow: hidden; background: #F3EEE4; transition: left .45s cubic-bezier(.2, .8, .2, 1), top .45s cubic-bezier(.2, .8, .2, 1), width .45s cubic-bezier(.2, .8, .2, 1), height .45s cubic-bezier(.2, .8, .2, 1), border-radius .45s, box-shadow .45s; }
.kp-slot img, .kp-slot video { display: block; width: 100%; height: 100%; object-fit: contain; }
.kp-main { left: 0; top: 0; width: 100%; height: 100%; z-index: 1; border-radius: 16px; box-shadow: 0 10px 30px rgba(28, 24, 20, .14); }
.kp-mini { left: 3.5%; top: 59%; width: 34%; height: 37%; z-index: 2; border-radius: 12px; outline: 3px solid #fff; box-shadow: 0 8px 22px rgba(28, 24, 20, .28); cursor: pointer; }
.kp-mini:hover { box-shadow: 0 10px 26px rgba(28, 24, 20, .36); }
.kp-mini { touch-action: none; cursor: grab; user-select: none; -webkit-user-select: none; }
.kp-mini img, .kp-mini video { pointer-events: none; -webkit-user-drag: none; }
.kp-mini.kp-dragging { transition: none; cursor: grabbing; box-shadow: 0 16px 34px rgba(28, 24, 20, .38); }
.kp-mini:focus-visible { outline-color: #E89A1A; }
.kp-tag { position: absolute; left: 10px; top: 10px; padding: 3px 9px; border-radius: 999px; background: rgba(28, 24, 20, .62); color: #fff; font-size: 12px; font-weight: 700; line-height: 1.4; pointer-events: none; }
.kp-mini .kp-tag { left: 6px; top: 6px; font-size: 11px; padding: 2px 7px; }
.kp-swap { position: absolute; right: 6px; bottom: 6px; width: 26px; height: 26px; border-radius: 50%; background: #fff; color: #0F7B66; display: none; place-items: center; box-shadow: 0 1px 4px rgba(0, 0, 0, .2); }
.kp-mini .kp-swap { display: grid; }
.kp-sound { position: absolute; right: 12px; top: 12px; z-index: 3; width: 38px; height: 38px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .94); color: var(--kp-ink); display: grid; place-items: center; cursor: pointer; box-shadow: 0 1px 4px rgba(0, 0, 0, .2); }
.kp-sound.on { background: var(--kp-green); color: #fff; }
.kp-sound { transition: top .25s, bottom .25s, left .25s, right .25s; }
.kp-media[data-snd="br"] .kp-sound { top: auto; bottom: 12px; }
.kp-media[data-snd="bl"] .kp-sound { top: auto; bottom: 12px; right: auto; left: 12px; }

.kp-cta { display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 52px; padding: 8px 28px; border-radius: 999px; background: var(--kp-green); color: #fff; text-decoration: none; font-weight: 800; font-size: 1.05rem; line-height: 1.2; box-shadow: 0 6px 18px rgba(15, 123, 102, .28); }
.kp-cta small { font-size: .78rem; font-weight: 600; opacity: .9; }
.kp-cta:hover { background: #0B6555; color: #fff; }
.kp-side .kp-cta { width: 100%; box-sizing: border-box; margin-bottom: 22px; }
/* 先上色的玩法：做同款下面的两步小图 / 新用户一句 / 「用我的作品」（founder 10-25 原型） */
.kp-steps2 { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; margin: -12px 0 14px; font-size: .85rem; color: var(--kp-ink); }
.kp-steps2 > span:not(.kp-arr) { display: inline-flex; align-items: center; gap: 6px; background: #fff; border: 1px solid var(--kp-line); border-radius: 999px; padding: 3px 11px 3px 4px; font-weight: 600; }
.kp-steps2 i { font-style: normal; width: 20px; height: 20px; border-radius: 50%; background: var(--kp-green); color: #fff; display: inline-grid; place-items: center; font-size: .72rem; font-weight: 800; }
.kp-arr { color: var(--kp-green); font-weight: 800; }
.kp-newbie { margin: 0 0 12px; text-align: center; font-size: .85rem; line-height: 1.45; color: #8A5A00; background: #FDF1D8; border-radius: 10px; padding: 7px 10px; }
.kp-works { display: block; margin: 0 0 22px; text-align: center; font-size: .9rem; font-weight: 700; color: var(--kp-green); text-decoration: underline; text-underline-offset: 3px; }
.kp-works:focus-visible { outline: 2px solid #E89A1A; outline-offset: 2px; }
.kp-works + .kp-tutbtn { margin-top: 0; }

.kp-mats { display: flex; flex-direction: column; gap: 8px; }
.kp-mat { border: 1px solid var(--kp-line); border-radius: 12px; background: #fff; }
.kp-mat summary { display: flex; align-items: center; gap: 10px; padding: 10px 12px; cursor: pointer; list-style: none; font-weight: 600; color: var(--kp-ink); }
.kp-mat summary::-webkit-details-marker { display: none; }
.kp-mat summary::after { content: ''; margin-left: auto; width: 8px; height: 8px; border-right: 2px solid #B3A48C; border-bottom: 2px solid #B3A48C; transform: rotate(45deg); transition: transform .15s; }
.kp-mat[open] summary::after { transform: rotate(-135deg); }
.kp-mat-ic { flex: none; width: 34px; height: 34px; border-radius: 10px; background: var(--kp-cream); color: var(--kp-green); display: grid; place-items: center; }
.kp-mat p { margin: 0; padding: 0 12px 12px 56px; font-size: .92rem; line-height: 1.5; color: var(--kp-ink2); }

/* 步骤：一图一句 */
.kp-steps { margin: 0 0 30px; }
.kp-steps ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.kp-steps li { margin: 0; }
.kp-steps img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 12px; border: 1px solid var(--kp-line); background: #fff; }
.kp-steps img.kp-illus { height: auto; background: #fff; object-fit: contain; border-radius: 14px; }
.kp-steps p { margin: 8px 0 0; font-size: .92rem; line-height: 1.45; color: var(--kp-ink2); }
.kp-steps p b { display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 6px; border-radius: 50%; background: var(--kp-green); color: #fff; font-size: 12px; }

/* 折叠：描述草稿 / 教程 / FAQ */
.kp-folds { margin: 0 0 30px; display: flex; flex-direction: column; gap: 8px; }
.kp-folds .kp-h { margin-top: 14px; }
.kp-fold { border: 1px solid var(--kp-line); border-radius: 12px; background: #fff; }
.kp-fold summary { padding: 12px 14px; cursor: pointer; font-weight: 600; color: var(--kp-ink); list-style: none; display: flex; align-items: center; gap: 10px; }
.kp-fold summary::-webkit-details-marker { display: none; }
.kp-fold summary::after { content: ''; margin-left: auto; width: 8px; height: 8px; flex: none; border-right: 2px solid #B3A48C; border-bottom: 2px solid #B3A48C; transform: rotate(45deg); transition: transform .15s; }
.kp-fold[open] summary::after { transform: rotate(-135deg); }
.kp-fold-b { padding: 0 14px 14px; color: var(--kp-ink2); line-height: 1.55; }
.kp-fold-b p { margin: 0; }
.kp-prompt { padding: 12px 14px !important; border-radius: 10px; background: var(--kp-cream); color: var(--kp-ink) !important; }
.kp-copy { margin-top: 10px; min-height: 36px; padding: 0 16px; border: 1px solid #D9CFBE; border-radius: 999px; background: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.kp-copy.done { border-color: var(--kp-green); color: var(--kp-green); }
.kp-note { margin-top: 8px !important; font-size: .85rem; }
/* 「看教程」按钮（做同款下面）+ 浮层播放器 */
.kp-tutbtn { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; min-height: 46px; margin: -10px 0 22px; padding: 0 18px; border: 1px solid #CFE8DF; border-radius: 999px; background: #F2FAF7; color: #0B5E4E; font: inherit; font-weight: 700; font-size: .95rem; cursor: pointer; }
.kp-tutbtn:hover { border-color: var(--kp-green); }
.kp-tutbtn small { font-weight: 600; color: #4E7F73; }
.kp-tutbtn:focus-visible, .kp-tut-x:focus-visible { outline: 2px solid #E89A1A; outline-offset: 2px; }
html.kp-noscroll { overflow: hidden; }
.kp-tut-layer { position: fixed; inset: 0; z-index: 3000; background: rgba(28, 24, 20, .72); display: flex; align-items: center; justify-content: center; padding: 16px; box-sizing: border-box; animation: kpFade .18s ease-out; }
.kp-tut-box { position: relative; width: min(960px, 100%); }
.kp-tut-box video { display: block; width: 100%; max-height: 82vh; border-radius: 14px; background: #000; box-shadow: 0 18px 52px rgba(0, 0, 0, .4); }
.kp-tut-x { position: absolute; right: -10px; top: -14px; z-index: 1; width: 40px; height: 40px; border-radius: 50%; border: 0; background: #fff; color: #1C1814; display: grid; place-items: center; cursor: pointer; box-shadow: 0 2px 8px rgba(0, 0, 0, .3); }
@keyframes kpFade { from { opacity: 0; } }
@media (max-width: 760px) { .kp-tut-x { right: 4px; top: -48px; } }

/* 卡片：列表页 + 相关玩法 */
.kp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.kp-card { display: flex; flex-direction: column; border: 1px solid var(--kp-line); border-radius: 14px; overflow: hidden; background: #fff; text-decoration: none; color: var(--kp-ink); transition: transform .15s, box-shadow .15s; }
.kp-card:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(28, 24, 20, .1); }
.kp-card video, .kp-card img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; background: #F3EEE4; }
.kp-card-t { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px 12px; }
.kp-card-t b { font-size: 1rem; }
.kp-card-t small { font-size: .82rem; color: var(--kp-ink2); }
.kp-related { margin: 0 0 30px; }
/* 卡片里的原画小图（叠在示例视频左下角）+ 专题页卡片的一句介绍 */
.kp-card-m { position: relative; display: block; }
.kp-card .kp-card-in { position: absolute; left: 8px; bottom: 8px; width: 34%; height: auto; aspect-ratio: auto; object-fit: contain; background: #fff; border-radius: 8px; outline: 2px solid #fff; box-shadow: 0 4px 12px rgba(28, 24, 20, .25); }
.kp-card-d { margin: 2px 0 4px; font-size: .86rem; line-height: 1.4; color: var(--kp-ink2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 专题页（/plays.html）：标题 + 三条示例拼贴，下面按 config/web_plays.json 的 groups 分组 */
.kp-lh { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px; align-items: center; margin: 4px 0 40px; }
.kp-lh h1 { font-size: 2.4rem; }
.kp-lh p { margin: 10px 0 16px; font-size: 1.1rem; line-height: 1.5; color: var(--kp-ink2); }
.kp-lh-n { display: inline-block; padding: 5px 12px; border-radius: 999px; background: var(--kp-cream); border: 1px solid var(--kp-line); font-size: .85rem; font-weight: 700; color: var(--kp-green); }
.kp-mos { position: relative; aspect-ratio: 16 / 11; }
.kp-mos a { position: absolute; display: block; overflow: hidden; border-radius: 16px; outline: 4px solid #fff; background: #F3EEE4; box-shadow: 0 14px 34px rgba(28, 24, 20, .18); transition: transform .2s; }
.kp-mos video { display: block; width: 100%; height: 100%; object-fit: cover; }
.kp-mos a span { position: absolute; left: 10px; bottom: 10px; padding: 3px 10px; border-radius: 999px; background: rgba(28, 24, 20, .62); color: #fff; font-size: 12px; font-weight: 700; }
.kp-mos-1 { left: 0; top: 8%; width: 52%; height: 74%; transform: rotate(-3deg); z-index: 2; }
.kp-mos-2 { left: 46%; top: 0; width: 42%; height: 50%; transform: rotate(2.5deg); z-index: 1; }
.kp-mos-3 { left: 50%; top: 46%; width: 48%; height: 54%; transform: rotate(-1.5deg); z-index: 3; }
.kp-mos a:hover { transform: rotate(0) scale(1.02); z-index: 4; }
.kp-mos .kp-mos-2 span { left: auto; right: 10px; bottom: auto; top: 10px; }   /* its lower-left corner sits under the big tile */
.kp-grp { margin: 0 0 36px; }
.kp-grp-h { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; font-size: 1.35rem; font-weight: 800; color: var(--kp-ink); }
.kp-grp-h::before { content: ''; flex: none; width: 6px; height: 1.1em; border-radius: 3px; background: #E89A1A; }

.kp-final { text-align: center; margin: 8px 0 36px; }
.kp-sticky { position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 50; display: none; }
.kp-sticky .kp-cta { width: 100%; box-sizing: border-box; }

@media (max-width: 760px) {
    .kp.lp-container { padding: 16px 16px 96px; }
    .kp h1 { font-size: 1.55rem; }
    .kp-hero { grid-template-columns: minmax(0, 1fr); gap: 18px; }
    .kp-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .kp-lh { grid-template-columns: minmax(0, 1fr); gap: 20px; margin-bottom: 28px; }
    .kp-lh h1 { font-size: 1.9rem; }
    .kp-mos { aspect-ratio: 4 / 3; }
    .kp-grp-h { font-size: 1.15rem; }
    .kp-steps ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .kp-sticky.show { display: block; }
}
@media (prefers-reduced-motion: reduce) { .kp-tut-layer { animation: none; } .kp-card, .kp-slot, .kp-mos a, .kp-mat summary::after, .kp-fold summary::after { transition: none; } }
/* 还没有示例的玩法（只在本地 --preview 页面出现） */
.kp-pending { display: grid; place-items: center; border: 2px dashed #D9CFBF; background: #FBF7EF; color: #8A7F70; font-weight: 700; }
.kp-card-pending { display: grid; place-items: center; aspect-ratio: 4 / 3; background: #FBF7EF; color: #8A7F70; font-size: .85rem; font-weight: 700; }