/* PPT gallery: nine complete sets. Styles are deliberately scoped to this chapter. */
.ppt-gallery-page{--ppt-ink:#252b2b;--ppt-muted:#68716d;--ppt-line:#dce1dd;--ppt-accent:#2c5f4e;max-width:1680px;margin:0 auto;padding:50px 5.4vw 72px;color:var(--ppt-ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif;background:#f8f9f6}
.ppt-gallery-page *{box-sizing:border-box}
.ppt-gallery-page button,.ppt-gallery-page a{-webkit-tap-highlight-color:transparent}
.ppt-gallery-page button:focus-visible,.ppt-gallery-page a:focus-visible{outline:2px solid var(--ppt-accent);outline-offset:5px}
.ppt-gallery-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px}
.ppt-gallery-page .ppt-eyebrow{font-size:10px;line-height:1.5;letter-spacing:.14em;color:var(--ppt-accent);font-weight:600;margin:0 0 15px}
.ppt-eyebrow span{letter-spacing:.04em;margin-left:12px;color:var(--ppt-muted);font-weight:400}
.ppt-gallery-heading h1{font-size:clamp(29px,3.1vw,48px);line-height:1.3;letter-spacing:-.045em;font-weight:600;margin:0 0 16px;color:var(--ppt-ink)}
.ppt-gallery-page .ppt-gallery-intro{font-size:14px;line-height:1.85;color:var(--ppt-muted);margin:0}
.ppt-heading-aside{flex-shrink:0;display:flex;align-items:flex-end;flex-direction:column;gap:24px;padding-bottom:4px}
.ppt-heading-aside>span{color:var(--ppt-muted);font-size:12px}
.ppt-heading-aside i{display:inline-block;height:10px;border-left:1px solid #adb8b1;margin:0 12px}
.ppt-heading-aside a,.ppt-consult{display:inline-flex;align-items:center;gap:24px;background:var(--ppt-accent);color:#f8faf6;padding:13px 20px;font-size:13px;text-decoration:none;border-radius:3px;transition:background .18s}
.ppt-heading-aside a:hover,.ppt-consult:hover{background:#214a3c}
.ppt-gallery-caption{border-top:1px solid var(--ppt-line);padding:17px 0;display:flex;justify-content:space-between;font-size:11px;color:var(--ppt-muted)}
.ppt-gallery-caption>span:first-child{color:var(--ppt-ink);font-weight:500}
.ppt-deck-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:35px 26px}
.ppt-deck-card{min-width:0}
.ppt-deck-open{display:block;width:100%;padding:0;border:0;background:none;text-align:left;cursor:pointer;color:inherit;font:inherit}
.ppt-deck-art{display:block;position:relative;background:#e8eae5;overflow:hidden;aspect-ratio:1480/850;outline:1px solid #1d30220c;outline-offset:-1px}
.ppt-deck-art>img{display:block;width:100%;height:100%;object-fit:contain;transition:transform .35s ease}
.ppt-card-reveal{position:absolute;inset:auto 9px 9px auto;display:flex;align-items:center;gap:20px;padding:9px 12px;background:#f7faf6;color:#244b3d;font-size:11px;box-shadow:0 2px 10px #172c261c;opacity:0;transform:translateY(5px);transition:opacity .2s,transform .2s}
.ppt-deck-open:hover .ppt-card-reveal,.ppt-deck-open:focus-visible .ppt-card-reveal{opacity:1;transform:none}
.ppt-deck-open:hover .ppt-deck-art>img{transform:scale(1.015)}
.ppt-deck-meta{display:flex;align-items:flex-start;gap:10px;padding-top:16px}
.ppt-deck-index{font-family:"Helvetica Neue",sans-serif;font-size:11px;color:#84918a;line-height:24px;min-width:19px}
.ppt-deck-meta strong{display:block;font-size:17px;line-height:1.5;font-weight:600;letter-spacing:-.02em}
.ppt-deck-subtitle{display:block;margin-top:5px;font-size:12px;line-height:1.5;color:var(--ppt-muted)}
.ppt-deck-count{margin-left:auto;white-space:nowrap;font-size:11px;color:var(--ppt-muted);line-height:25px}
.ppt-deck-count b{margin-left:8px;font-size:17px;color:var(--ppt-accent);font-weight:400}
.ppt-deck-tags{margin:11px 0 0 29px;color:#7c837d;font-size:10px;line-height:1.6}
.ppt-deck-tags span{padding:0 5px;color:#b1b8b2}
.ppt-custom-section{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:62px;padding-top:35px;border-top:1px solid var(--ppt-line)}
.ppt-custom-section h2{font-size:25px;line-height:1.5;letter-spacing:-.03em;font-weight:500;margin:0 0 12px}
.ppt-custom-section p{font-size:12px;line-height:1.8;color:var(--ppt-muted);margin:0 0 12px}
.ppt-custom-details>p{display:flex;gap:24px}
.ppt-custom-details>p>span{color:#394a42;flex-shrink:0}
.ppt-custom-details>div{display:flex;gap:25px;align-items:center;margin-top:22px}
.ppt-price-link{font-size:12px;color:var(--ppt-accent);text-decoration:none}
.ppt-gallery-notice{padding:15px 20px;background:#f1ede3;color:#665539;font-size:13px;margin-bottom:20px}
body.ppt-reader-open{overflow:hidden}
.ppt-reader{position:fixed;inset:0;margin:auto;width:calc(100vw - 32px);max-width:1720px;height:calc(100dvh - 32px);max-height:none;padding:0;border:1px solid #d8ded7;background:#f8f9f6;color:#252b2b;box-shadow:0 20px 90px #12221b3b;overflow:hidden;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.ppt-reader[open]{display:flex;flex-direction:column}
.ppt-reader::backdrop{background:#18251cd1}
.ppt-reader-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 30px 19px;border-bottom:1px solid #dce1dd;flex-shrink:0}
.ppt-reader-header>div>span{font-size:11px;color:#637368}
.ppt-reader-header i{font-style:normal;margin:0 7px;color:#a2aca6}
.ppt-reader-header h2{font-size:24px;font-weight:500;margin:7px 0 0;line-height:1.4;letter-spacing:-.035em;text-wrap:balance}
.ppt-reader-close{display:flex;align-items:center;gap:20px;cursor:pointer;background:none;border:1px solid #c7d2ca;color:#385745;font:inherit;font-size:12px;padding:10px 14px;border-radius:3px;white-space:nowrap;flex-shrink:0}
.ppt-reader-close:hover{background:#e9eee7}
.ppt-reader-close b{font-size:24px;line-height:1;font-weight:300}
.ppt-reader-toolbar{display:flex;align-items:center;justify-content:space-between;padding:13px 30px;gap:15px;flex-shrink:0}
.ppt-reader-toolbar>div{display:flex;gap:3px;padding:3px;background:#e7ece5;border-radius:4px}
.ppt-reader-toolbar button{border:0;background:none;color:#627368;cursor:pointer;padding:9px 18px;font:inherit;font-size:12px;border-radius:2px}
.ppt-reader-toolbar button[aria-pressed=true]{background:#fcfdfa;color:#244b3a;box-shadow:0 1px 3px #30432c14}
.ppt-reader-toolbar p{font-size:11px;color:#79877c;margin:0}
.ppt-reader-main{min-height:0;overflow:auto;overscroll-behavior:contain;padding:8px 30px 28px;flex:1;outline:none}
.ppt-reader-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px 22px}
.ppt-reader-overview>button{border:0;padding:0;background:none;color:inherit;text-align:left;cursor:pointer;font:inherit;min-width:0}
.ppt-page-preview{display:block;position:relative;aspect-ratio:16/9;margin:0;background:#e2e8df;overflow:hidden}
.ppt-page-preview>img{display:block;width:100%;height:100%;object-fit:contain}
.ppt-page-enlarge{position:absolute;right:10px;bottom:10px;display:grid;place-items:center;background:#fcfdf9;color:#244b3a;width:28px;height:28px;font-size:18px;opacity:0;transition:opacity .15s}
.ppt-reader-overview>button:hover .ppt-page-enlarge,.ppt-reader-overview>button:focus-visible .ppt-page-enlarge{opacity:1}
.ppt-page-caption{display:flex;gap:10px;align-items:center;padding-top:10px;font-size:11px}
.ppt-page-caption b{font-weight:400;color:#819185}
.ppt-page-caption>span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ppt-page-caption small{margin-left:auto;flex-shrink:0;color:#829084;font-size:10px}
.ppt-reader-stage{display:grid;grid-template-columns:38px minmax(0,1fr) 38px;align-items:center;justify-content:center;gap:18px;max-width:1250px;margin:0 auto}
.ppt-reader-stage>.ppt-page-preview{width:100%;max-width:calc((100dvh - 390px) * 16 / 9);justify-self:center;box-shadow:0 8px 22px #253d2c15}
.ppt-reader-stage>button{width:38px;height:48px;background:none;border:1px solid #c9d4cb;border-radius:3px;font-size:19px;color:#31563e;cursor:pointer}
.ppt-reader-stage>button:hover:not(:disabled){background:#e4ece1}
.ppt-reader-stage>button:disabled{opacity:.25;cursor:default}
.ppt-current-caption{display:flex;gap:20px;justify-content:space-between;align-items:center;max-width:1125px;margin:14px auto 18px;font-size:11px;color:#748475}
.ppt-current-caption strong{font-size:13px;font-weight:500;color:#344a37}
.ppt-current-caption i{display:inline-block;border-left:1px solid #bdc9bb;height:9px;margin:0 10px}
.ppt-reader-filmstrip{position:relative;display:flex;justify-content:flex-start;gap:10px;margin:0 auto;padding:6px;width:max-content;max-width:min(1125px,100%);overflow:auto;scrollbar-width:thin;scrollbar-color:#9cac9d transparent}
.ppt-reader-filmstrip button{position:relative;display:block;flex:0 0 clamp(76px,8vw,110px);max-width:115px;min-width:55px;border:0;padding:3px;background:transparent;cursor:pointer;opacity:.55}
.ppt-reader-filmstrip button[aria-current=page]{opacity:1;outline:2px solid #38694d;outline-offset:0}
.ppt-reader-filmstrip button:hover{opacity:1}
.ppt-reader-filmstrip img{display:block;width:100%;height:auto}
.ppt-reader-filmstrip span{position:absolute;right:5px;bottom:5px;background:#182d24ba;color:#f5f9f2;font-size:9px;padding:1px 4px}
.ppt-image-error{height:100%;min-height:100px;display:grid;place-items:center;padding:24px;text-align:center;font-size:13px;color:#6f776b;background:#e9ece4}
.ppt-gallery-page [hidden]{display:none!important}
.ppt-reader-toolbar .ppt-reader-zoom{border:1px solid #c7d2ca;color:#31563e;margin-right:auto;background:transparent}
.ppt-reader-toolbar .ppt-reader-zoom[aria-pressed=true]{background:#e7ece5}
.ppt-reader-main.is-zoomed .ppt-reader-stage>.ppt-page-preview{max-width:none}
.ppt-reader-main.is-zoomed .ppt-reader-stage{align-items:start;min-width:1120px}
.ppt-reader-main.is-zoomed .ppt-reader-stage>button{position:sticky;top:16px}
@media(min-width:1750px){.ppt-gallery-page{padding-left:60px;padding-right:60px}.ppt-deck-grid{gap:44px 32px}.ppt-deck-meta strong{font-size:20px}}
@media(max-width:1000px){.ppt-gallery-page{padding:36px 28px 55px}.ppt-deck-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ppt-reader-overview{grid-template-columns:repeat(2,minmax(0,1fr))}.ppt-heading-aside{gap:17px}.ppt-custom-section{gap:30px}.ppt-custom-details>p{gap:15px}.ppt-reader-stage>.ppt-page-preview{max-width:none}}
@media(max-width:650px){.ppt-gallery-page{padding:28px 20px 45px}.ppt-gallery-heading{display:block}.ppt-gallery-heading h1{font-size:28px}.ppt-heading-aside{align-items:center;justify-content:space-between;flex-direction:row;margin-top:23px}.ppt-gallery-caption>span:last-child{font-size:9px}.ppt-deck-grid{grid-template-columns:1fr;gap:28px}.ppt-custom-section{grid-template-columns:1fr;gap:22px;margin-top:38px}.ppt-reader{width:100vw;height:100dvh;border:0}.ppt-reader-header{padding:17px 16px;gap:12px}.ppt-reader-header h2{font-size:20px}.ppt-reader-close{padding:8px;font-size:10px;gap:9px}.ppt-reader-toolbar{padding:10px 16px;flex-wrap:wrap}.ppt-reader-toolbar p{font-size:10px}.ppt-reader-main{padding:8px 16px 22px}.ppt-reader-overview{grid-template-columns:1fr}.ppt-reader-stage{grid-template-columns:27px minmax(0,1fr) 27px;gap:5px}.ppt-reader-stage>button{width:27px;height:38px}.ppt-reader-stage>.ppt-page-preview{max-width:none}.ppt-current-caption{flex-wrap:wrap;gap:8px}.ppt-current-caption>span:last-child{display:none}.ppt-reader-filmstrip{justify-content:flex-start}.ppt-reader-filmstrip button{min-width:76px}.ppt-reader-single{padding-top:30px}}
@media(prefers-reduced-motion:reduce){.ppt-deck-art>img,.ppt-card-reveal,.ppt-page-enlarge{transition:none}}