/* 明暗两版 —— 夜版（本站原始观感）是基准，系统亮色时翻昼版，顶栏控件把选择写进 `<html data-scheme>` 锁死。
   「锁亮」那条必须把昼版值**再写一遍**（CSS 没法把一组变量整体引过来），两块逐字相同，改一处要一起改。
   「锁暗」不带颜色也能成立，全靠系统亮那条被 `:not([data-scheme="dark"])` 挡在门外——别删那个 `:not()`。
   昼版与戏梦奇点官网的昼版同族（同一套素白 + 压深的湖蓝），也与「点鲸科技」选择页同色系，
   三站看着仍是一家的东西。2026-09-11 王导定：昼版不带米黄，走白。
   选择存在同域 localStorage，与选择页、戏梦奇点官网共用一档。控件在 ./scheme-toggle.js。 */
:root{color-scheme:light dark;--bg:#06161e;--panel:#0a2430;--line:#294651;--text:#eaf2f4;--muted:#a8bfc7;--lake:#9ad2e2;--warm:#f2e5c8;--on-lake:#08222c;--status-line:#8a8474;--status-bg:#f2e5c808;--release-glow:#123746;font:16px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
@media(prefers-color-scheme:light){:root:not([data-scheme="dark"]){--bg:#f4f3f1;--panel:#fbfbfa;--line:#dcdad7;--text:#23211e;--muted:#55504a;--lake:#2f6b86;--warm:#1f5064;--on-lake:#fff;--status-line:#b9ccd4;--status-bg:rgba(31,80,100,.06);--release-glow:#dcebef}}
:root[data-scheme="light"]{--bg:#f4f3f1;--panel:#fbfbfa;--line:#dcdad7;--text:#23211e;--muted:#55504a;--lake:#2f6b86;--warm:#1f5064;--on-lake:#fff;--status-line:#b9ccd4;--status-bg:rgba(31,80,100,.06);--release-glow:#dcebef;color-scheme:light}
:root[data-scheme="dark"]{color-scheme:dark}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,summary:focus-visible{outline:2px solid var(--lake);outline-offset:6px}header,main,footer{width:min(1120px,calc(100% - 48px));margin:auto}.brand{display:flex;align-items:center;justify-content:center;gap:12px;padding:24px 0}.brand img{border-radius:9px}.brand strong{font-size:20px}.brand span{font-size:12px;letter-spacing:2px;color:var(--muted)}nav{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;font-size:14px}nav div{display:flex;align-items:center;gap:28px}.nav-status{color:var(--warm)}section{padding:88px 0;border-bottom:1px solid var(--line);scroll-margin-top:24px}.hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:64px;align-items:center;padding-top:100px;padding-bottom:100px}.eyebrow{color:var(--lake);font-size:12px;letter-spacing:3px;margin:0 0 22px}h1,h2{font-family:"Songti SC","STSong","SimSun",serif;font-weight:500;line-height:1.3;margin:0 0 28px}h1{font-size:clamp(36px,4.6vw,60px);line-height:1.4}h1 span,h1 em{display:block;white-space:nowrap}h1 em{font-style:normal;color:var(--warm)}h2{font-size:clamp(28px,3.2vw,40px);text-wrap:balance}h3{font-size:20px;margin:14px 0 10px}p{margin:0 0 18px;color:var(--muted);text-wrap:pretty;overflow-wrap:break-word}section>p:not(.eyebrow){max-width:76ch}.release>p{margin-left:auto;margin-right:auto}nav a{white-space:nowrap}.two-column>* ,.features>*{min-width:0}summary{overflow-wrap:break-word}.intro{font-size:17px}.actions{display:flex;flex-wrap:wrap;gap:20px;align-items:center;margin-top:30px;font-size:14px}.status{display:inline-block;padding:10px 18px;border:1px solid var(--status-line);border-radius:5px;color:var(--warm);background:var(--status-bg)}.note{font-size:12px;margin:18px 0 0}.process{border:1px solid var(--line);background:var(--panel);padding:28px;border-radius:8px}.process-title{display:flex;justify-content:space-between;gap:12px;font-size:15px;border-bottom:1px solid var(--line);padding-bottom:18px}.process-title span{font-size:10px;letter-spacing:2px;color:var(--lake)}ol{list-style:none;margin:0;padding:0}.process li{display:flex;gap:24px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.process li>span{font:26px Georgia,serif;color:var(--lake)}.process li p{font-size:13px;margin:4px 0 0}.process-note{margin:18px 0 0;font-size:11px;text-align:right}.two-column{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:44px}.number{font-size:12px;letter-spacing:2px;color:var(--lake)}.two-column article{padding:28px 0;border-top:1px solid var(--line)}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:26px 40px;margin-top:40px}.features article{padding:12px 0}.features p,.two-column p{font-size:15px}.release{text-align:center;background:radial-gradient(ellipse at center,var(--release-glow) 0,transparent 70%)}.release .status{margin-top:12px}details{padding:20px 0;border-bottom:1px solid var(--line)}summary{cursor:pointer;font-size:17px}details p{margin:18px 0 0;max-width:780px}details a{text-decoration:underline}footer{text-align:center;padding:40px 0;font-size:12px;color:var(--muted)}footer>a{display:inline-block;margin-bottom:20px}footer p{margin:6px 0}
@media(max-width:850px){.hero{grid-template-columns:1fr;gap:40px;padding:64px 0}.features{grid-template-columns:repeat(2,1fr)}nav div{gap:18px}section{padding:64px 0}}
@media(max-width:560px){header,main,footer{width:calc(100% - 32px)}.brand span{display:none}nav{font-size:12px;gap:12px;flex-wrap:wrap}nav div{gap:20px;flex-wrap:wrap}.two-column,.features{grid-template-columns:1fr;gap:16px}.process{padding:20px}h1{font-size:clamp(30px,8.5vw,44px)}.intro{font-size:15px}footer p{overflow-wrap:anywhere}.actions{gap:16px}section{padding:52px 0}}

.callout{margin-top:24px;padding:24px;border:1px solid var(--line);border-radius:6px;font-size:14px}.callout strong{display:block;margin-bottom:8px;color:var(--text)}

/* 下载入口与版本信息。沿用页面既有的湖蓝与暖色，不另起一套配色。 */
.download{display:inline-block;padding:13px 26px;border-radius:5px;background:var(--lake);color:var(--on-lake);font-size:15px;font-weight:600;text-decoration:none}
.download:hover{text-decoration:none;filter:brightness(1.08)}
.release .download{margin-bottom:8px}
.release-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 40px;max-width:760px;margin:32px auto 0;text-align:left;font-size:14px}
.release-meta>div{padding-top:14px;border-top:1px solid var(--line)}
.release-meta .wide{grid-column:1/-1}
.release-meta dt{font-size:11px;letter-spacing:2px;color:var(--lake);margin-bottom:6px}
.release-meta dd{margin:0;color:var(--text)}
/* 校验和是一长串十六进制，窄屏上必须能断行，否则会把整页撑宽。 */
.release-meta code,.note code{font-size:12px;overflow-wrap:anywhere;color:var(--muted)}
@media(max-width:560px){.release-meta{grid-template-columns:1fr}}

/* 更新日志页 */
.updates h1{font-family:"Songti SC","STSong","SimSun",serif;font-weight:500;font-size:clamp(30px,3.4vw,42px);margin:0 0 20px}
.updates .intro{max-width:70ch;margin-bottom:52px}
.updates article{padding:28px 0;border-top:1px solid var(--line)}
.updates article h2{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px;font-size:24px;margin:0 0 18px}
.updates article h2 span{font-family:var(--font-ui,inherit);font-size:12px;letter-spacing:2px;color:var(--muted)}
.updates ul{margin:0;padding:0;list-style:none}
.updates li{position:relative;padding:0 0 0 18px;margin:0 0 14px;color:var(--muted);font-size:15px;line-height:1.75;max-width:78ch}
.updates li::before{content:'';position:absolute;left:0;top:.65em;width:5px;height:5px;border-radius:50%;background:var(--lake)}
.updates li strong{color:var(--text);font-weight:600;margin-right:2px}
.updates .section-note{font-size:18px;margin:44px 0 12px;padding-top:28px;border-top:1px solid var(--line)}

/* 首屏右栏的工程目录树。等宽字体，窄屏横向滚动——目录结构一旦断行就看不出层级，
   宁可让这一块自己滚，也不让树形缩进错位。 */
.tree{border:1px solid var(--line);background:var(--panel);padding:24px 26px;border-radius:8px}
.tree-title{display:flex;justify-content:space-between;gap:12px;align-items:baseline;font-size:15px;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:18px}
.tree-title span{font-size:10px;letter-spacing:2px;color:var(--lake)}
.tree pre{margin:0;overflow-x:auto;font-size:12px;line-height:1.85}
.tree code{font-family:ui-monospace,SFMono-Regular,Menlo,"SF Mono",monospace;color:var(--muted);white-space:pre}
.tree-note{margin:18px 0 0;font-size:11px;text-align:right}

/* 界面截图。整页最重的资产，单栏排满宽度；说明跟在图下面，不压在图上。 */
.shots{display:grid;gap:56px;margin-top:44px}
.shots figure{margin:0}
.shots img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.shots figcaption{margin-top:16px;font-size:14px;color:var(--muted);max-width:76ch}
.shots figcaption strong{display:block;color:var(--text);font-size:16px;margin-bottom:6px}

@media(max-width:850px){.shots{gap:40px}}
@media(max-width:560px){.tree{padding:18px 16px}.tree pre{font-size:11px}.shots{gap:32px}.shots figcaption strong{font-size:15px}}

/* 产品导航：功能与支持分组，获取作为主要入口。 */
.product-nav{align-items:center;gap:16px}
.product-nav .back-link{color:var(--muted)}
.product-nav .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:0}
.product-nav .nav-links>a,.product-nav summary{display:flex;align-items:center;justify-content:center;gap:6px;padding:9px 14px;border-radius:999px;font-size:14px;line-height:1.6;white-space:nowrap}
.product-nav .nav-links>a:hover,.product-nav summary:hover,.product-nav .nav-group[open]>summary{background:var(--line);text-decoration:none}
.product-nav .nav-group{position:relative;padding:0;border:0}
.product-nav summary{list-style:none}
.product-nav summary::-webkit-details-marker{display:none}
.product-nav .nav-caret{font-size:10px;color:var(--muted)}
.product-nav .nav-group[open] .nav-caret{transform:rotate(180deg)}
.product-nav .nav-menu{position:absolute;z-index:10;top:calc(100% + 10px);right:0;display:flex;flex-direction:column;align-items:stretch;gap:2px;width:270px;max-width:calc(100vw - 32px);padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 16px 40px color-mix(in srgb,var(--bg) 65%,transparent)}
.product-nav .nav-menu a{display:block;text-decoration:none;white-space:normal;padding:10px 12px;border-radius:8px;line-height:1.6}
.product-nav .nav-menu a:hover{background:var(--line);text-decoration:none}
.product-nav .nav-menu strong{display:block;font-size:14px;font-weight:600}
.product-nav .nav-menu span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.product-nav .nav-links>.nav-cta{background:var(--lake);color:var(--on-lake);font-weight:600;padding-inline:20px}
.product-nav .nav-links>.nav-cta:hover{background:var(--lake);filter:brightness(1.08)}
@media(max-width:560px){
  .product-nav{align-items:flex-start;gap:12px}
  .product-nav .nav-links{position:relative;width:100%;justify-content:space-between;flex-wrap:wrap;gap:4px}
  .product-nav .nav-links>a,.product-nav summary{padding:9px 8px;font-size:13px}
  .product-nav .nav-links>.nav-cta{padding-inline:14px}
  .product-nav .nav-group{position:static}
  .product-nav .nav-group:first-of-type .nav-menu{left:0;right:auto}
  .product-nav .nav-menu{max-height:65vh;overflow-y:auto}
}

/* 重要更新专题：重点功能说明与真实界面并列，窄屏顺序阅读。 */
.product-nav .nav-new{color:var(--lake);font-weight:600}
.product-nav a[aria-current="page"]{background:var(--line)}
.new-intro{padding:64px 0 36px;border-bottom:1px solid var(--line)}
.new-intro h1{font-size:clamp(36px,5vw,56px);margin-bottom:20px}
.new-intro>.intro{max-width:48ch}
.new-index{justify-content:flex-start;flex-wrap:wrap;gap:12px 24px;border:0;padding:12px 0 0}
.new-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:40px;align-items:center}
.new-status{font-size:12px;color:var(--lake);letter-spacing:1px;margin-bottom:16px}
.new-lead{color:var(--text);font-size:19px;font-weight:600}
.new-note{font-size:13px;max-width:76ch}
.new-shot{margin:0;min-width:0}
.new-shot img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px}
.new-shot figcaption{margin-top:12px;color:var(--muted);font-size:12px;line-height:1.7}
.new-more{display:flex;flex-wrap:wrap;gap:6px 14px;padding:28px 0;margin:0;font-size:14px}
.new-more a{color:var(--lake);text-decoration:underline}
@media(max-width:850px){.new-feature{grid-template-columns:minmax(0,1fr);gap:24px}.new-intro{padding-top:48px}}
@media(max-width:560px){.new-intro{padding-top:36px}.new-index{gap:10px 18px}.new-feature{gap:20px}}