/* Strict photographed-page correction for pages 242–245. No generic auto-layout. */
.v4strict-spread{font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;background:transparent}
.v4strict-page{position:absolute;background:#fffdf7;border:1px solid #d8d2c6;box-shadow:0 7px 23px rgba(55,46,35,.15);overflow:hidden;color:#3b3a37;z-index:0}
.v4strict-page:after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 18% 15%,rgba(173,142,88,.035),transparent 38%);z-index:-4}
.v4strict-footer{position:absolute;bottom:22px;left:44px;font-size:24px;text-decoration:underline;text-underline-offset:5px;color:#5f5b55}.v4strict-page:nth-of-type(even) .v4strict-footer{left:auto;right:42px}
.v4strict-header{position:absolute;left:4.5%;top:2%;width:91%;height:10.4%;display:flex;align-items:center;background:#e9c188;clip-path:polygon(0 3%,98% 0,100% 3%,99.3% 94%,0 100%);z-index:8}.v4strict-header:after{content:"";position:absolute;right:10px;top:8px;bottom:8px;width:12px;background:radial-gradient(circle,#fffdf7 4px,transparent 4.6px) center top/12px 15px repeat-y}.v4strict-header svg{width:116px;height:64px;margin-left:8px}.v4strict-header .v4strict-mini{font-size:10px;font-weight:900;line-height:1;color:#f5f8f6;text-align:right;margin-left:-14px;z-index:2}.v4strict-header>b{width:72px;height:72px;display:grid;place-items:center;border-radius:50%;background:#647fac;color:#fff;font-size:32px;margin-left:-4px;box-shadow:3px 4px 0 rgba(103,89,74,.14)}.v4strict-header h3{font-size:35px;letter-spacing:.04em;margin:0 0 0 20px;color:#37322e}.v4strict-header i{display:none}
.v4strict-ribbon{position:absolute;background:var(--rc);color:white;text-align:center;border-radius:10px 10px 9px 3px;padding:8px 12px;font-size:24px;font-weight:900;line-height:1;z-index:6;box-shadow:0 2px 0 rgba(0,0,0,.08)}
.v4strict-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}.v4strict-svg path{fill:none;stroke-linecap:round;stroke-linejoin:round}.v4strict-svg .purple{stroke:#7668a1;stroke-width:7}.v4strict-svg .blue{stroke:#5e7fac;stroke-width:7}.v4strict-svg .green{stroke:#629665;stroke-width:7}.v4strict-svg .orange{stroke:#d48745;stroke-width:7}.v4strict-svg .mustard{stroke:#d0a337;stroke-width:7}.v4strict-svg .red{stroke:#b24e49;stroke-width:5}.v4strict-svg .spine{stroke-width:18}.v4strict-svg .dark{stroke:#555450}.v4strict-svg .pink{stroke:#bf5367}.v4strict-svg .slate{stroke:#71888d}.v4strict-svg .arrow{stroke:#555450;stroke-width:24}.v4strict-svg .stair{stroke:#9a978e;stroke-width:18}.v4strict-svg .blue-dash{stroke:#5e7fac;stroke-width:4;stroke-dasharray:9 8}.v4strict-svg .node{fill:#fffdf7;stroke:#555;stroke-width:4}
.v4strict-q{position:absolute;font-size:15px;line-height:1.42;z-index:4}.v4strict-q strong{font-weight:900}.v4strict-num{font-size:10px;vertical-align:super;margin:0 3px;color:#555;white-space:nowrap}.v4strict-box{border:1px solid #8b8984;padding:8px 10px;background:rgba(255,255,255,.26)}.v4strict-oval{border:2px solid #5e5d59;border-radius:999px;padding:3px 8px;text-align:center}.v4strict-cloud{background:#d7e4ea;border-radius:48% 52% 45% 55%/47% 43% 57% 53%;padding:12px 14px;text-align:center;color:#49617b}.v4strict-cloud.small{padding:5px 9px;border-radius:42% 58% 50% 50%}.v4strict-cloud.current{padding:9px 12px}.v4strict-atmo-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px 8px;margin-top:6px}.v4strict-q ol{margin:3px 0 0 18px;padding:0}.v4strict-q li{margin:2px 0}
.v4strict-fill{display:inline-flex;align-items:center;vertical-align:baseline;position:relative;min-width:var(--fw);height:22px;margin:0 2px;border-bottom:1.8px solid #595b5b}.v4strict-fill input{height:21px;padding:0 2px;border:0!important;background:transparent!important;outline:0;text-align:center;font:800 14px/20px inherit;color:#3d5268}.v4strict-fill i{position:absolute;right:-9px;top:2px;font:800 9px/1 sans-serif;color:#777}.v4strict-fill.is-ok{border-bottom-color:#488e57}.v4strict-fill.is-ok input,.v4strict-fill.is-ok i{color:#3e7d4b}.v4strict-fill.is-wrong{border-bottom-color:#b84f4a}.v4strict-fill.is-wrong input,.v4strict-fill.is-wrong i{color:#9d4540}.v4strict-fill.learn{padding:0 3px;color:#355f8c;font-weight:900;justify-content:center}.v4strict-fill:focus-within{background:rgba(98,115,185,.07);border-bottom-color:#6876bd}
.v4strict-bigbang-burst{position:absolute;left:24%;top:32%;padding:13px 28px;color:#fff;background:#7668a1;clip-path:polygon(11% 22%,22% 22%,28% 8%,37% 20%,48% 7%,57% 21%,70% 7%,77% 24%,94% 22%,88% 44%,99% 52%,87% 63%,93% 79%,75% 77%,67% 94%,54% 79%,42% 94%,35% 78%,18% 91%,20% 69%,4% 66%,13% 51%,2% 38%,18% 36%);font-size:20px;font-weight:900;z-index:3}.v4strict-singularity{position:absolute;left:28.5%;top:40.8%;width:132px;height:132px;border-radius:50%;display:grid;place-items:center;background:#4d4c49;color:white;font-size:20px;font-weight:900;z-index:2}.v4strict-nebula{position:absolute;left:13%;top:60%;width:37%;height:15%;z-index:2}.v4strict-earth-hot{position:absolute;left:71%;top:53%;width:74px;height:74px;border-radius:50%;background:radial-gradient(circle,#df7b4d 0 22%,#a24b36 23% 40%,#8a4432 42% 60%,#be6745 62% 100%);box-shadow:inset 0 0 0 2px rgba(89,42,31,.25);z-index:3}.v4strict-earth-hot:after{content:"初期地球呈";position:absolute;top:82px;left:-14px;width:120px;font-size:18px;font-weight:800}.v4strict-earth-wedge{position:absolute;right:4%;bottom:7%;width:22%;height:18%;z-index:2}
.v4strict-geology-title{position:absolute;left:5%;top:2%;background:#ef7e43;color:#fff;padding:8px 14px;border-radius:12px 12px 12px 3px;font-size:23px;font-weight:900;z-index:4}.v4strict-decay{position:absolute;right:5%;top:4%;width:36%;height:20%;z-index:2}.v4strict-strata{position:absolute;right:6%;top:25%;width:31%;height:16%;z-index:2}.v4strict-fossils{position:absolute;right:4%;top:42%;width:42%;height:10%;z-index:3}.v4strict-243:before{content:"地質年代";position:absolute;left:6%;top:10%;padding:9px 14px;border:2px solid #676560;border-radius:18px;background:#fffdf7;font-size:18px;font-weight:900;z-index:5}.v4strict-243 .v4strict-footer{right:42px;left:auto}
.v4strict-starcolor{position:absolute;left:12%;top:14.2%;width:54%;height:7%;border:1px solid #777;z-index:2}.v4strict-starcolor:before{content:"";position:absolute;left:18%;right:9%;top:22px;height:2px;background:#565656}.v4strict-starcolor:after{content:"";position:absolute;left:18%;right:9%;top:22px;height:2px;background:linear-gradient(90deg,#5f72c2,#e7e8ed,#e4c34d,#d78a48,#c65b52);transform:translateY(22px)}.v4strict-starcolor span{position:absolute;left:8%;top:3px;font-size:14px}.v4strict-starcolor em{position:absolute;right:4%;top:3px;font-size:14px;font-style:normal}.v4strict-starcolor b{position:absolute;left:49%;top:30px;background:#d5c43f;border-radius:50%;padding:9px 6px;font-size:12px}.v4strict-starbox{position:absolute;left:17%;top:42%;background:#71639b;color:#fff;font-size:27px;font-weight:900;padding:8px 17px;border-radius:4px;z-index:4}.v4strict-brightbox{position:absolute;left:42%;top:44%;background:#d78a46;color:#fff;font-size:27px;font-weight:900;padding:8px 17px;border-radius:4px;z-index:4}.v4strict-celestial{position:absolute;left:15%;top:54%;width:36%;height:20%;z-index:2}.v4strict-parallax{position:absolute;right:11%;top:88%;width:25%;height:10%;z-index:2}
.v4strict-blackbody{position:absolute;left:4%;top:8%;width:33%;height:25%;z-index:2}.v4strict-telescope{position:absolute;border:1px solid #777;background:#fff;padding:7px 12px;font-size:17px;font-weight:800;z-index:3}.v4strict-telescope.xray{left:38%;top:30%;width:27%;text-align:center}.v4strict-telescope.ir{right:9%;top:7%;width:37%;text-align:center}.v4strict-telescope.micro{right:5%;top:29%;width:34%;text-align:center}.v4strict-universe-title{position:absolute;left:4%;top:39%;background:#5579ad;color:#fff;padding:10px 18px;border-radius:8px;font-size:30px;font-weight:900;z-index:4}.v4strict-step{position:absolute;height:39px;background:linear-gradient(180deg,#486e9e 0 50%,#6799c1 51% 100%);clip-path:polygon(0 0,88% 0,100% 30%,87% 100%,0 100%);z-index:3}.v4strict-step i{position:absolute;width:17px;height:17px;border-radius:50%;border:4px solid #5a5b59;background:#fffdf7;left:48%;top:8px}.v4strict-galaxy-icon{position:absolute;left:48%;top:45%;font-size:62px;color:#466c96;transform:rotate(-25deg);z-index:2}.v4strict-solar-chart{position:absolute;left:45%;top:70%;width:47%;height:18%;z-index:2}.v4strict-comet{position:absolute;left:43%;top:90%;width:21%;height:10%;z-index:2}
.v4strict-qa-panel{position:fixed;right:16px;bottom:16px;z-index:99999;display:flex;align-items:center;gap:6px;padding:8px 10px;background:#111d;color:#fff;border-radius:10px;font:700 11px/1.2 sans-serif}.v4strict-qa-panel label{display:flex;align-items:center;gap:4px}.v4strict-qa-panel input{width:145px;font-size:10px}.v4strict-qa-panel button{border:1px solid #777;background:#222;color:#fff;border-radius:6px;padding:5px 7px;font:inherit}.v4strict-qa-source{display:none;position:fixed;z-index:99990;pointer-events:none;object-fit:contain;background:#fff}.v4strict-qa-source.show{display:block}body[data-v4strict-qa="overlay"] .v4strict-qa-source{left:calc(50% - 455px);top:70px;width:910px;height:1270px;opacity:.5}body[data-v4strict-qa="side"] .v4strict-qa-source{right:8px;top:80px;width:min(46vw,680px);height:calc(100vh - 100px);opacity:1}
@media(max-width:900px){.v4strict-q{font-size:15px}.v4strict-ribbon{font-size:24px}.v4strict-header h3{font-size:35px}.v4strict-fill input{font-size:14px}.v4strict-qa-panel{display:none}}