/* ==========================================================
   首页：横翻作品档案（全屏，一张作品一页）
   ========================================================== */

body.home { height: 100svh; overflow: hidden; overscroll-behavior: none; }

.deck {
    position: fixed; inset: var(--nav-h) 0 0 0;
    display: grid; grid-template-rows: 1fr auto;
}
.deck-view { position: relative; overflow: hidden; touch-action: pan-y; }
.deck-track {
    display: flex; height: 100%;
    transition: transform 1s var(--ease-io);
    will-change: transform;
}
.deck.dragging .deck-track { transition: none; }

/* 左侧竖排标尺 */
.deck-rail {
    position: absolute; left: 0; top: 0; bottom: 0; z-index: 3; width: 36px;
    border-right: 1px solid var(--line);
    background:
        repeating-linear-gradient(to bottom, var(--line) 0 1px, transparent 1px 12px) right 0 top 0 / 6px 100% no-repeat,
        repeating-linear-gradient(to bottom, var(--fg-3) 0 1px, transparent 1px 60px) right 0 top 0 / 12px 100% no-repeat;
    pointer-events: none;
}
.deck-rail span {
    position: absolute; left: 10px; top: 24px;
    writing-mode: vertical-rl; color: var(--fg-3); white-space: nowrap;
}

/* ---------- 单页 ---------- */
.slide {
    position: relative; flex: 0 0 100%; height: 100%;
    display: grid; grid-template-columns: minmax(380px, 40%) 1fr;
    padding-left: 36px;
    overflow: hidden;
}

.slide-info {
    position: relative; z-index: 2;
    display: flex; flex-direction: column; justify-content: center;
    padding: 32px clamp(20px, 3.2vw, 52px) 40px;
    min-height: 0;
}
.si-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.si-head .mono { color: var(--fg-2); display: inline-flex; align-items: center; gap: 8px; }
.si-en {
    margin: 0 0 6px; font-family: var(--f-sans); font-weight: 700; font-size: clamp(13px, 1.05vw, 16px);
    letter-spacing: 0.32em; color: var(--blue);
}
.si-title {
    margin: 0; font-size: clamp(44px, 5.4vw, 92px); font-weight: 900; line-height: 1.02; letter-spacing: -0.01em;
}
.si-tagline { margin: 16px 0 0; font-size: clamp(16px, 1.3vw, 20px); font-weight: 600; }
.si-desc { margin: 14px 0 0; max-width: 34em; color: var(--fg-2); font-size: 14.5px; }
.spec {
    display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 0;
    margin: 26px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.spec div { padding: 10px 22px 10px 0; margin-right: 22px; border-right: 1px solid var(--line-2); }
.spec div:last-child { border-right: 0; margin-right: 0; }
.spec dt { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; color: var(--fg-3); }
.spec dd { margin: 2px 0 0; font-weight: 700; font-size: 14px; white-space: nowrap; }
.si-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }

/* 文字依次进场 */
.slide-info > * { opacity: 0; transform: translateX(-24px); transition: opacity 0.6s, transform 0.8s var(--ease); }
.slide.on .slide-info > * { opacity: 1; transform: none; }
.slide.on .slide-info > :nth-child(2) { transition-delay: 0.08s; }
.slide.on .slide-info > :nth-child(3) { transition-delay: 0.14s; }
.slide.on .slide-info > :nth-child(4) { transition-delay: 0.2s; }
.slide.on .slide-info > :nth-child(5) { transition-delay: 0.26s; }
.slide.on .slide-info > :nth-child(6) { transition-delay: 0.32s; }
.slide.on .slide-info > :nth-child(7) { transition-delay: 0.38s; }

/* ---------- 主视觉 ---------- */
.slide-media {
    position: relative; margin: 20px 20px 20px 0; min-height: 0;
    clip-path: polygon(48px 0, 100% 0, 100% calc(100% - 48px), calc(100% - 48px) 100%, 0 100%, 0 48px);
    background: var(--bg-2);
}
.slide-media .kv {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    image-rendering: pixelated;
    transform: scale(1.08); transition: transform 1.6s var(--ease);
}
.slide.on .slide-media .kv { transform: scale(1); }
/* 进场擦除 */
.slide-media::before {
    content: ""; position: absolute; inset: 0; z-index: 3; background: var(--fg);
    transform-origin: right; transform: scaleX(1); transition: transform 0.9s var(--ease-io) 0.15s;
}
.slide.on .slide-media::before { transform: scaleX(0); }
/* 扫描线 + 暗角 */
.slide-media::after {
    content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
    background:
        repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.07) 0 1px, transparent 1px 3px),
        linear-gradient(to top, rgba(0, 0, 0, 0.45), transparent 32%);
}
.sm-hud {
    position: absolute; inset: 18px; z-index: 2; pointer-events: none; color: #fff;
    --c: rgba(255, 255, 255, 0.9);
}
.sm-hud .mono { position: absolute; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5); }
.sm-hud .tl { left: 34px; top: 14px; }
.sm-hud .tr { right: 14px; top: 14px; text-align: right; }
.sm-hud .bl { left: 14px; bottom: 34px; }
.sm-hud .br { right: 34px; bottom: 14px; }
.sm-hud .cross {
    position: absolute; left: 50%; top: 50%; width: 28px; height: 28px; margin: -14px 0 0 -14px; opacity: 0.6;
    background: linear-gradient(var(--c), var(--c)) center / 1px 100% no-repeat, linear-gradient(var(--c), var(--c)) center / 100% 1px no-repeat;
}
.sm-play {
    position: absolute; right: 28px; bottom: 56px; z-index: 4;
    display: flex; align-items: center; gap: 14px; padding: 14px 20px 14px 16px;
    background: var(--signal); color: var(--ink);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
    font-weight: 800; transition: background-color 0.25s, color 0.25s;
}
.sm-play:hover { background: #fff; }
.sm-play i { width: 0; height: 0; border-left: 12px solid currentColor; border-top: 8px solid transparent; border-bottom: 8px solid transparent; }
.sm-play span { display: grid; line-height: 1.2; }
.sm-play small { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; font-weight: 500; }

/* 大号编号 */
.slide-num {
    position: absolute; left: 36px; bottom: -0.16em; z-index: 1; pointer-events: none;
    font-family: var(--f-sans); font-weight: 700; font-size: clamp(140px, 19vw, 300px); line-height: 1; letter-spacing: -0.06em;
    color: transparent; -webkit-text-stroke: 1px var(--line);
}

/* ---------- 占位卡 ---------- */
.slide.placeholder .slide-media { background: var(--ink); }
.ph-art { position: absolute; inset: 0; display: grid; place-items: center; overflow: hidden; }
.ph-art::before { content: ""; position: absolute; inset: 0; opacity: 0.07; background: repeating-linear-gradient(-45deg, var(--signal) 0 18px, transparent 18px 36px); }
.ph-box { position: relative; text-align: center; color: #e8eae4; padding: 36px 48px; --c: var(--signal); }
.ph-box .ph-code { font-family: var(--f-sans); font-weight: 700; font-size: clamp(48px, 7vw, 120px); letter-spacing: -0.03em; line-height: 1; }
.ph-box .ph-code span { color: var(--signal); }
.ph-box .mono { margin-top: 14px; color: rgba(232, 234, 228, 0.6); }
.ph-strip { position: absolute; left: 0; right: 0; height: 26px; }
.ph-strip.t { top: 0; }
.ph-strip.b { bottom: 0; }
.redact { background: var(--fg); color: transparent; user-select: none; box-decoration-break: clone; -webkit-box-decoration-break: clone; }

/* ---------- 底栏 ---------- */
.deck-bar {
    position: relative; z-index: 5;
    display: grid; grid-template-columns: 1fr auto auto; align-items: stretch;
    height: 64px; border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
}
.deck-index { display: flex; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.deck-index::-webkit-scrollbar { display: none; }
.di-item {
    position: relative; display: flex; align-items: center; gap: 12px;
    padding: 0 26px; border-right: 1px solid var(--line); white-space: nowrap;
    color: var(--fg-3); transition: color 0.3s, background-color 0.3s;
}
.di-item b { font-family: var(--f-mono); font-size: 12px; }
.di-item span { font-weight: 700; font-size: 14px; }
.di-item::after {
    content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 3px; background: var(--blue);
    transform: scaleX(0); transform-origin: left; transition: transform 0.6s var(--ease);
}
.di-item:hover { color: var(--fg); }
.di-item.on { color: var(--fg); background: var(--panel); }
.di-item.on::after { transform: scaleX(1); }
.deck-meta { display: flex; align-items: center; gap: 14px; padding: 0 22px; border-left: 1px solid var(--line); color: var(--fg-3); }
.deck-count { font-family: var(--f-mono); font-size: 13px; color: var(--fg); letter-spacing: 0.08em; }
.deck-count b { font-size: 22px; font-weight: 700; }
.deck-nav { display: flex; }
.deck-nav button {
    width: 64px; display: grid; place-items: center; border-left: 1px solid var(--line);
    font-family: var(--f-mono); font-size: 18px; transition: background-color 0.25s, color 0.25s;
}
.deck-nav button:hover:not(:disabled) { background: var(--fg); color: var(--inv); }
.deck-nav button:disabled { color: var(--fg-3); cursor: default; }

/* ---------- 窄屏：上图下文，单页内可纵向滚动 ---------- */
@media (max-width: 900px) {
    .deck-rail { display: none; }
    .slide {
        grid-template-columns: 1fr; grid-template-rows: auto 1fr;
        padding-left: 0; overflow-y: auto; overscroll-behavior: contain;
    }
    .slide-media { order: -1; margin: 12px 12px 0; aspect-ratio: 16 / 9; clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px); }
    .sm-hud { inset: 10px; }
    .sm-hud .tr, .sm-hud .br { display: none; }
    .sm-play { right: 14px; bottom: 34px; padding: 10px 14px 10px 12px; }
    .slide-info { justify-content: flex-start; padding: 22px 18px 28px; }
    .si-head { margin-bottom: 14px; }
    .spec { grid-template-columns: repeat(2, auto); }
    .spec div:nth-child(2) { border-right: 0; }
    .slide-num { display: none; }
    .deck-meta .mono { display: none; }
    .di-item { padding: 0 16px; }
    .deck-nav button { width: 52px; }
}
@media (max-height: 520px) and (orientation: landscape) {
    .slide { grid-template-columns: 1fr 1fr; grid-template-rows: none; }
    .slide-media { order: 0; aspect-ratio: auto; margin: 10px 10px 10px 0; }
    .si-title { font-size: 36px; }
    .si-desc { display: none; }
    .deck-bar { height: 48px; }
}