@font-face{font-family:Geologica;src:url('../assets/Geologica-Bold.ttf') format('truetype');font-weight:700;font-display:swap}
#embeddedVideoGuide{--paper:#fff8ec;--ink:#75443b;--muted:#98736a;--coral:#d84c3f;--line:#e3b3a8}
#embeddedVideoGuide *{box-sizing:border-box}
#embeddedVideoGuide a{color:inherit}
#embeddedVideoGuide button{font:inherit;cursor:pointer}
#embeddedVideoGuide [hidden]{display:none!important}
#embeddedVideoGuide :focus-visible{outline:3px solid var(--coral);outline-offset:5px}
#embeddedVideoGuide .skip-link{position:fixed;top:12px;left:16px;z-index:3;transform:translateY(-160%);padding:10px 16px;background:var(--paper);border-radius:12px}
#embeddedVideoGuide .skip-link:focus{transform:none}
#embeddedVideoGuide .guide-backdrop{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;background:#f8efdd}
#embeddedVideoGuide .guide-backdrop video{display:block;width:100%;height:100%;object-fit:cover;object-position:center}
#embeddedVideoGuide .guide-backdrop::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,248,236,.72),rgba(255,248,236,.28) 45%,rgba(255,248,236,.7))}
#embeddedVideoGuide .guide-shell{position:relative;z-index:1;width:min(1480px,calc(100% - clamp(36px,7vw,112px)));min-height:100vh;min-height:100svh;margin:auto;display:flex;flex-direction:column}
#embeddedVideoGuide .guide-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 0}
#embeddedVideoGuide .guide-brand{font-size:21px;font-weight:700;text-decoration:none;letter-spacing:.02em}
#embeddedVideoGuide .guide-brand span{display:block;font-size:11px;font-weight:400;color:var(--muted)}
#embeddedVideoGuide .home-link{flex-shrink:0;border:1px solid var(--line);background:rgba(255,250,241,.86);border-radius:999px;padding:10px 20px;text-decoration:none;font-size:14px}
#embeddedVideoGuide .home-link:hover{background:#fffaf1;border-color:var(--coral)}
#embeddedVideoGuide [data-guide-main]{display:flex;flex:1;align-items:center;min-width:0;padding:24px 0 56px}
#embeddedVideoGuide .science-overview{width:100%;padding-top:32px;border-top:1px solid rgba(181,111,97,.32)}
#embeddedVideoGuide .science-kicker h2{margin:0;color:#a66d60;font-size:clamp(26px,3vw,38px);font-weight:600;letter-spacing:.08em;line-height:1.3}
#embeddedVideoGuide .science-kicker p{margin:6px 0 0;color:#a66d60;font-size:15px;letter-spacing:.12em}
#embeddedVideoGuide .science-overview-copy{margin:22px 0 26px;color:#76564f;font-size:16px;line-height:1.85;overflow-wrap:anywhere}
#embeddedVideoGuide .science-overview-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
#embeddedVideoGuide .science-overview-item{display:flex;flex-direction:column;position:relative;min-width:0;min-height:220px;padding:26px 24px;border:1px solid var(--line);border-radius:22px;background:rgba(255,250,241,.87);text-decoration:none;box-shadow:0 8px 24px rgba(140,74,61,.04);transition:transform .2s,border-color .2s,background .2s}
#embeddedVideoGuide .science-overview-item:hover{transform:translateY(-4px);border-color:#cf8172;background:rgba(255,250,241,.97)}
#embeddedVideoGuide .science-overview-item b{padding-right:40px;font-family:Geologica,Arial,sans-serif;font-size:30px;font-weight:700;font-style:italic;line-height:1.3;color:var(--coral)}
#embeddedVideoGuide .science-overview-item strong{display:block;margin-top:12px;font-size:18px;line-height:1.5}
#embeddedVideoGuide .science-overview-item>span:not(.play-icon){display:block;margin-top:6px;color:var(--muted);font-size:14px;line-height:1.7;overflow-wrap:anywhere}
#embeddedVideoGuide .science-overview-item .play-icon{display:grid;place-items:center;position:absolute;top:22px;right:20px;width:34px;height:34px;border:1px solid rgba(216,76,63,.42);border-radius:50%;background:#fff9ef;color:var(--coral);font-size:12px;box-shadow:0 5px 14px rgba(140,74,61,.1)}
#embeddedVideoGuide .guide-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:22px 0;border-top:1px solid rgba(181,111,97,.25);font-size:12px;color:#876358}
#embeddedVideoGuide .guide-footer p{margin:0}
#embeddedVideoGuide .guide-footer button{padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,250,241,.82);color:var(--ink);font-size:12px}
#embeddedVideoGuide .science-video-dialog{position:fixed;width:min(1080px,calc(100% - 32px));max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);margin:auto;padding:28px;border:1px solid #dfa99d;border-radius:26px;background:#fff4df;color:var(--ink);overflow:auto;box-shadow:0 28px 90px rgba(83,48,40,.3)}
#embeddedVideoGuide .science-video-dialog::backdrop{background:rgba(77,52,45,.65);backdrop-filter:blur(8px)}
#embeddedVideoGuide .science-video-close{position:absolute;right:18px;top:18px;width:40px;height:40px;border:1px solid #dfafa4;border-radius:50%;background:#fff9ef;color:#94574d;font-size:24px;line-height:1}
#embeddedVideoGuide .science-video-head{padding-right:48px;margin-bottom:18px}
#embeddedVideoGuide .science-video-head p{margin:0;color:#a66d60;font-size:12px;letter-spacing:.1em}
#embeddedVideoGuide .science-video-head h2{margin:4px 0 0;font-size:clamp(22px,3vw,32px);font-weight:500;line-height:1.4}
#embeddedVideoGuide .science-module-video{display:block;width:100%;max-height:calc(100vh - 210px);max-height:calc(100dvh - 210px);border-radius:16px;background:#2d2725;object-fit:contain}
#embeddedVideoGuide .video-hint,#embeddedVideoGuide .video-error{margin:14px 0 0;font-size:13px;color:#876358}
#embeddedVideoGuide .video-error a{color:#a33d31}
@media(max-width:1100px){#embeddedVideoGuide .science-overview-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){#embeddedVideoGuide .science-overview-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}#embeddedVideoGuide .science-overview-item{min-height:205px;padding:24px 20px}#embeddedVideoGuide .guide-header{padding:22px 0}#embeddedVideoGuide .guide-brand span{font-size:10px}#embeddedVideoGuide .home-link{padding:8px 14px}#embeddedVideoGuide .science-overview-copy{font-size:15px}}
@media(max-width:520px){#embeddedVideoGuide .science-overview-grid{grid-template-columns:1fr}#embeddedVideoGuide .science-overview-item{min-height:0;padding:22px}#embeddedVideoGuide .science-overview-item strong{padding-right:32px}#embeddedVideoGuide .guide-shell{width:calc(100% - 36px)}#embeddedVideoGuide [data-guide-main]{padding:12px 0 32px}#embeddedVideoGuide .science-overview{padding-top:24px}#embeddedVideoGuide .science-overview-copy{margin:18px 0 22px}#embeddedVideoGuide .science-video-dialog{width:calc(100% - 20px);max-height:calc(100dvh - 20px);padding:18px;border-radius:18px}#embeddedVideoGuide .science-video-close{top:12px;right:12px}#embeddedVideoGuide .science-module-video{border-radius:12px}}
@media(prefers-reduced-motion:reduce){#embeddedVideoGuide .science-overview-item{transition:none}#embeddedVideoGuide .science-overview-item:hover{transform:none}}


/* Adapt only the embedded copy; keep the original homepage and guide styles intact. */
#embeddedVideoGuide { position: relative; isolation: isolate; width: 100%; min-width: 0; scroll-margin-top: 76px; background: var(--paper); color: var(--ink); font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif; line-height: 1.6; }
#embeddedVideoGuide .guide-backdrop { position: absolute; }
#embeddedVideoGuide .guide-shell { min-height: 0; }
#embeddedVideoGuide [data-guide-main] { display: flex; flex-direction: column; align-items: stretch; gap: clamp(36px,5vw,64px); }
#embeddedVideoGuide .science-video-dialog { display: none; }
#embeddedVideoGuide .science-video-dialog[open] { display: block; }
#embeddedVideoGuide .science-video-head { display: block; }
#embeddedVideoGuide .science-overview { height: auto; min-height: 0; margin: 0 !important; padding: 32px 0 0 !important; }
#embeddedVideoGuide .science-overview-grid { gap: 18px !important; margin-top: 0; }
#embeddedVideoGuide .science-overview-copy { max-width: none; }
#embeddedVideoGuide .science-overview-item { height: auto; min-height: 220px !important; padding: 26px 24px !important; }
#embeddedVideoGuide .science-overview-item .play-icon { margin-top: 0; }
@media(max-width:760px) { #embeddedVideoGuide .science-overview-grid { gap: 14px !important; } #embeddedVideoGuide .science-overview-item { min-height: 205px !important; padding: 24px 20px !important; } }
@media(max-width:520px) { #embeddedVideoGuide .science-overview-item { min-height: 0 !important; padding: 22px !important; } }
@media(max-width:520px) { #embeddedVideoGuide { scroll-margin-top: 112px; } #embeddedVideoGuide .guide-header { gap: 12px; } #embeddedVideoGuide .guide-brand { font-size: 18px; } }