/* Syn8leo · 第七版“下山”：首页是一次从 5018 米到海平面的下山；阅读页是白天的纸面，跟随系统深浅色
   不用内联样式和外部资源（CSP：style-src 'self'） */
:root{
  /* 固定的世界：星空、冰川、海 */
  --night:#050b16; --dusk:#0d2234; --glacier:#0d3f49; --lake:#167a80; --snow:#eaf2f5; --mist:#a9bdc8;
  --alpen:#ff7f50; --alpen-deep:#b5431a; --sea:#0b4557; --abyss:#051c27; --ice:#e4f0ee; --day:#f5f8f6; --pine:#0a1a24; --slate:#47606b;
  /* 阅读页，随深浅色变化 */
  --bg:#f5f8f6; --ink:#0f1f28; --ink-2:#31454f; --muted:#4f6570; --faint:#7a8f99; --line:#d9e4e2;
  --accent:#0d6b74; --accent-soft:#deeeec; --warn:#b5481d; --warn-soft:#fbeee6;
  --code-bg:#e9f0ee; --surface:#ffffff;
  --n-user:#e6edfb; --n-user-b:#8ea8e2; --n-tool:#dceeeb; --n-tool-b:#6fb5ae; --n-ext:#fbf0dc; --n-ext-b:#dcb765; --n-out:#fbe9e0; --n-out-b:#ec9f7f;
  --bar:rgba(245,248,246,.94);
  /* 字体 */
  --display:"Trail Display","Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --numeral:"Trail Numeral","Trail Display",Georgia,serif;
  --body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:"Trail Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.75,.2,1);
  --gl:max(20px,env(safe-area-inset-left,0px)); --gr:max(20px,env(safe-area-inset-right,0px));
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0b141b; --ink:#e8f0f3; --ink-2:#c6d4da; --muted:#a4b6bf; --faint:#728690; --line:#20303a;
    --accent:#5ecbc9; --accent-soft:#102a2e; --warn:#ff9a6f; --warn-soft:#2d1d14;
    --code-bg:#14212a; --surface:#101b23;
    --n-user:#1a2438; --n-user-b:#4c5f8f; --n-tool:#10292c; --n-tool-b:#3a8582; --n-ext:#2b2415; --n-ext-b:#8a7238; --n-out:#2d1c14; --n-out-b:#a4603f;
    --bar:rgba(11,20,27,.94);
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.85 var(--body);overflow-wrap:break-word;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px;transition:color .2s}
a:hover{color:var(--alpen-deep);text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--alpen);outline-offset:3px;border-radius:2px}
h1,h2,h3{font-family:var(--display);font-weight:900;line-height:1.25;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(34px,5.6vw,68px);margin:0}
h2{font-size:clamp(25px,3.2vw,34px);margin:1.9em 0 .55em;line-height:1.3}
h3{font-size:clamp(19px,2vw,22px);font-weight:700;margin:1.7em 0 .4em}
p{margin:0 0 1.05em}
ul,ol{padding-left:1.4em;margin:0 0 1.1em}
li{margin:.3em 0}
hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
blockquote{margin:1.4em 0;padding:.2em 0 .2em 1.1em;border-left:2px solid var(--alpen);color:var(--ink-2)}
blockquote p:last-child{margin-bottom:0}
.muted{color:var(--muted)}.small,.fine{font-size:14px;color:var(--muted)}.narrow{max-width:700px}
.w{width:100%;max-width:1320px;margin-inline:auto;padding-left:var(--gl);padding-right:var(--gr)}
.wrap{width:100%;max-width:calc(740px + 40px);margin-inline:auto;padding-left:var(--gl);padding-right:var(--gr)}
.wrap-wide{max-width:1180px}
.eyebrow{font:500 12.5px/1.6 var(--mono);letter-spacing:.06em;margin:0}

/* ===== 顶栏 ===== */
.topbar{position:absolute;inset:0 0 auto;z-index:30;color:var(--snow)}
.js .topbar{position:fixed;transition:color .3s,background-color .3s}
.topbar .w{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-top:calc(15px + env(safe-area-inset-top,0px));padding-bottom:11px}
.brand{font:500 21px/1 var(--numeral);letter-spacing:.01em;color:inherit;text-decoration:none;white-space:nowrap}
.brand:hover{color:inherit}
.topnav{display:flex;gap:clamp(14px,2.2vw,28px);font-size:14.5px}
.topnav a{position:relative;color:inherit;text-decoration:none;white-space:nowrap}
.topnav a::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1.5px;background:var(--alpen);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.topnav a:hover,.topnav a:focus-visible{color:inherit}
.topnav a:hover::after,.topnav a:focus-visible::after,.topnav a[aria-current]::after{transform:scaleX(1)}
.js .topbar.past{background:var(--bar);color:var(--ink)}
.js .page-index .topbar.past{background:rgba(5,11,22,.8);color:var(--snow)}
.js .page-index .topbar.past.light{background:rgba(245,248,246,.92);color:var(--pine)}

/* ===== 栏目和文章的通栏页头 ===== */
.band{position:relative;background:linear-gradient(var(--night),var(--dusk));color:var(--snow);overflow:hidden;isolation:isolate}
.band-in{padding-top:calc(clamp(96px,14vh,150px) + env(safe-area-inset-top,0px));padding-bottom:clamp(40px,7vh,72px)}
.band h1{text-shadow:0 2px 26px rgba(3,8,18,.5)}
.band-photo .eyebrow{color:#dce7ec}
.band .eyebrow{color:var(--mist);margin-bottom:14px}
.dek{margin:18px 0 0;font-size:clamp(16px,1.6vw,19px);line-height:1.75;color:#d5e2e8;max-width:36em}
.band-photo{min-height:clamp(420px,66vh,720px);display:flex;align-items:flex-end;background:var(--night)}
.band-photo::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(rgba(5,11,22,.48),rgba(5,11,22,.3) 34%,rgba(5,11,22,.86))}
.band-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;animation:settle 2.4s var(--ease) both}
.band-photo .band-in{padding-top:120px}
.topo{position:absolute;inset:0;width:100%;height:100%;z-index:-1;display:block}
.post-tags{display:flex;flex-wrap:wrap;gap:6px;margin:20px 0 0}
.post-tags span{font:400 12px/1.5 var(--mono);padding:3px 10px;border:1px solid rgba(234,242,245,.28);border-radius:2px;color:#d5e2e8}

/* ===== 阅读 ===== */
article.post{padding-top:clamp(28px,5vh,52px)}
article.post>p:first-child{font-size:1.06em}
.post h2{scroll-margin-top:80px}
figure{margin:1.6em 0}
figure img{display:block;border:1px solid var(--line);border-radius:3px;background:var(--surface);margin:0 auto}
figcaption{font-size:14px;color:var(--muted);margin-top:8px;text-align:center}
.shots{display:grid;gap:14px;grid-template-columns:minmax(0,1fr)}
@media (min-width:600px){.shots.two{grid-template-columns:repeat(2,minmax(0,1fr))}}
a.zoom{display:block;cursor:zoom-in;overflow:hidden;border-radius:3px}
a.zoom img{transition:scale .7s var(--ease)}
a.zoom:hover img{scale:1.02}
.callout{background:var(--accent-soft);border-radius:3px;padding:16px 20px;margin:1.5em 0}
.callout.warn{background:var(--warn-soft)}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.callout strong:first-child{display:block;font-family:var(--display);font-weight:700;font-size:1.08em;margin-bottom:4px}
ol.steps{list-style:none;padding:0;counter-reset:s;margin:1em 0 1.4em}
ol.steps>li{counter-increment:s;position:relative;padding:0 0 14px 46px;margin:0}
ol.steps>li::before{content:counter(s);position:absolute;left:0;top:-5px;font:300 32px/1.2 var(--numeral);color:var(--alpen-deep);width:36px;text-align:center}
ol.steps>li>b:first-child{display:block}
code{font:.88em/1.5 var(--mono);background:var(--code-bg);padding:1px 5px;border-radius:3px;overflow-wrap:anywhere}
pre{background:var(--pine);color:#d8e5e9;border-radius:3px;padding:14px 16px;overflow-x:auto;margin:1em 0 1.3em;max-width:100%}
pre code{background:none;padding:0;font-size:13.5px;line-height:1.7;color:inherit;white-space:pre;overflow-wrap:normal}
.table-wrap{overflow-x:auto;margin:1em 0 1.3em}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
th,td{border-bottom:1px solid var(--line);padding:9px 10px 9px 0;text-align:left;vertical-align:top}
th{font-weight:600;white-space:nowrap;color:var(--muted);font-size:13.5px}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{cursor:pointer;font-weight:600;list-style:none;position:relative;padding-right:26px;transition:color .2s}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:2px;top:-1px;color:var(--faint);font:300 20px/1.4 var(--numeral);transition:transform .3s var(--ease)}
summary:hover{color:var(--alpen-deep)}
details[open]>summary{margin-bottom:8px}
details[open]>summary::after{transform:rotate(45deg)}
details p:last-child{margin-bottom:0}
.dl{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:16px 18px;margin:1.2em 0}
.btn{display:inline-block;background:var(--pine);color:var(--snow);text-decoration:none;font-weight:600;padding:9px 18px;border-radius:3px;font-size:15px;transition:background .25s,translate .25s var(--ease)}
.btn:hover{background:var(--alpen-deep);color:#fff;translate:0 -1px}
.dl .meta{font-size:13px;color:var(--muted);overflow-wrap:anywhere;line-height:1.6;min-width:0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn{background:var(--accent);color:#06181c}}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:clamp(44px,8vh,80px) 0 0;border-top:1px solid var(--line)}
.post-nav a{display:block;text-decoration:none;color:var(--ink);padding:16px 0 18px;font:700 clamp(16px,1.7vw,19px)/1.45 var(--display);transition:color .25s}
.post-nav a:hover{color:var(--alpen-deep)}
.post-nav span{display:block;font:400 12px/1.6 var(--mono);color:var(--faint);margin-bottom:3px}
.post-nav>:nth-child(2){padding-left:20px;border-left:1px solid var(--line)}
.pn-next{text-align:right}
@media (max-width:520px){.post-nav{grid-template-columns:minmax(0,1fr)}.post-nav>:nth-child(2){padding-left:0;border-left:0;border-top:1px solid var(--line)}.pn-next{text-align:left}}
.related{margin:8px 0 0;padding-bottom:10px}
.related h2{font:500 12.5px/1.6 var(--mono);letter-spacing:.06em;color:var(--faint);margin:18px 0 8px}
.related p{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:15px}
.read-progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:40;background:var(--alpen);transform-origin:left;transform:scaleX(0)}
@keyframes progress{to{transform:scaleX(1)}}
@supports (animation-timeline:scroll()){.read-progress{animation:progress linear both;animation-timeline:scroll(root)}}

/* 流程图 */
.flow{border:1px solid var(--line);border-radius:3px;padding:18px 14px;margin:1.6em 0;background:var(--surface)}
.flow-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.node{flex:1 1 0;min-width:0;max-width:340px;border:1.5px solid var(--n-tool-b);background:var(--n-tool);border-radius:3px;padding:9px 10px;text-align:center;font-size:14.5px;line-height:1.5}
.node b{display:block;font-size:15px}
.node span{display:block;font-size:12.5px;color:var(--muted)}
.node.user{border-color:var(--n-user-b);background:var(--n-user)}
.node.ext{border-color:var(--n-ext-b);background:var(--n-ext)}
.node.out{border-color:var(--n-out-b);background:var(--n-out)}
.arrow{text-align:center;color:var(--muted);font-size:13px;line-height:1.3;padding:6px 0}
.arrow::before{content:"↓";display:block;font-size:18px;line-height:1}
.arrow.both::before{content:"↕"}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:center;font-size:12.5px;color:var(--muted);margin-top:12px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:2px;margin-right:4px;vertical-align:-1px;border:1.5px solid}
.legend .l-user{background:var(--n-user);border-color:var(--n-user-b)}.legend .l-tool{background:var(--n-tool);border-color:var(--n-tool-b)}
.legend .l-ext{background:var(--n-ext);border-color:var(--n-ext-b)}.legend .l-out{background:var(--n-out);border-color:var(--n-out-b)}
.flow-sep{border-top:1px dashed var(--line);margin:14px 0}
@media (max-width:420px){.node{font-size:13.5px;padding:7px 6px}.node b{font-size:14px}}

/* 静态 SVG 图表 */
.chart-fig{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:14px 12px 12px}
svg.chart{display:block;width:100%;height:auto;font-family:var(--body)}
.ch-grid{stroke:var(--line);stroke-width:1}.ch-axis{stroke:var(--faint);stroke-width:1}
.ch-tick{fill:var(--faint);font-size:12px}.ch-label{fill:var(--muted);font-size:13px}
.ch-mark{fill:var(--accent-soft)}.ch-marklabel{fill:var(--accent);font-size:12px;font-weight:600}
.ch-bar{fill:var(--n-tool-b)}.ch-bar-hi{fill:var(--accent)}
.ch-l1{fill:none;stroke:var(--warn);stroke-width:2.5;stroke-linejoin:round}.ch-l1-dot{fill:var(--warn)}
.ch-l2{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linejoin:round}.ch-l2-dot{fill:var(--accent)}
.ch-l3{fill:none;stroke:var(--faint);stroke-width:2.5;stroke-linejoin:round}.ch-l3-dot{fill:var(--faint)}
.ch-whisker{stroke:var(--ink);stroke-width:1.5}.ch-value{fill:var(--ink);font-size:13px;font-weight:600}
.ch-zero{stroke:var(--faint);stroke-width:1.5;stroke-dasharray:5 5}
.ch-dir{stroke:var(--accent);stroke-width:3}.ch-arrowhead{fill:var(--accent)}.ch-dirlabel{fill:var(--accent);font-size:14px;font-weight:600}
.ch-proj{stroke:var(--warn);stroke-width:2;stroke-dasharray:3 4}.ch-x{fill:var(--n-user-b)}.ch-xa{fill:var(--surface);stroke:var(--n-user-b);stroke-width:2.5}
.chart-legend{display:flex;gap:16px;justify-content:center;font-size:13px;color:var(--muted);margin-top:4px}
.chart-legend span::before{content:"";display:inline-block;width:14px;height:3px;border-radius:2px;margin-right:6px;vertical-align:4px}
.chart-legend .lg1::before{background:var(--warn)}.chart-legend .lg2::before{background:var(--accent)}

/* ===== 工具行 ===== */
.tool-list{list-style:none;margin:0;padding:0}
.tool-list>li{margin:0}
.tool{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr) 7.5em;gap:8px 36px;align-items:baseline;padding-block:clamp(20px,3vh,32px);border-top:1px solid var(--tool-line);color:inherit;text-decoration:none}
.tool-list>li:last-child .tool{border-bottom:1px solid var(--tool-line)}
.tool::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:var(--alpen);transform:scaleX(0);transform-origin:left;transition:transform .55s var(--ease)}
.tool h3{margin:0;font:700 clamp(25px,3.5vw,48px)/1.2 var(--display);letter-spacing:-.012em;transition:translate .45s var(--ease),color .3s}
.tool p{margin:0;color:var(--tool-sub);font-size:16px;line-height:1.7;min-width:0;transition:color .3s}
.tool .tag{font:400 12px/1.5 var(--mono);color:var(--tool-sub);white-space:nowrap;text-align:right}
.tool:hover{color:inherit}
@media (hover:hover){
  .tool:hover::before{transform:scaleX(1)}
  .tool:hover h3{translate:12px 0;color:var(--tool-hi)}
  .tool:hover p{color:var(--tool-p)}
}
.tool:focus-visible h3{color:var(--tool-hi)}
:root{--tool-line:var(--line);--tool-sub:var(--muted);--tool-hi:var(--alpen-deep);--tool-p:var(--ink)}
#peek{position:fixed;left:0;top:0;width:min(320px,26vw);aspect-ratio:16/10;object-fit:cover;object-position:top;z-index:20;border-radius:3px;pointer-events:none;opacity:0;transition:opacity .25s;box-shadow:0 24px 60px rgba(0,0,0,.45)}
#peek.on{opacity:1}

/* ===== 照片拼图 ===== */
.photos{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(10px,1.4vw,18px)}
.ph{position:relative;display:block;overflow:hidden;background:#cfdcdc;border-radius:2px;min-width:0;color:#fff;text-decoration:none}
.ph:hover{color:#fff}
.ph figure{position:absolute;inset:0;margin:0}
.ph img{position:absolute;left:0;top:-6%;width:100%;max-width:none;height:112%;object-fit:cover;border:0;border-radius:0;transition:scale .9s var(--ease)}
.ph:hover img{scale:1.045}
.ph figcaption{position:absolute;left:0;right:0;bottom:0;margin:0;padding:48px 14px 12px;color:#fff;text-align:left;background:linear-gradient(transparent,rgba(5,15,22,.74));display:flex;justify-content:space-between;gap:10px;align-items:baseline;flex-wrap:wrap}
.ph b{font:700 clamp(16px,1.7vw,22px)/1.3 var(--display)}
.ph small{font:400 12px var(--mono);opacity:.92}
.p1{grid-column:span 7;aspect-ratio:4/3}.p2{grid-column:span 5;aspect-ratio:7/6}
.p3{grid-column:span 4;aspect-ratio:3/4}.p4{grid-column:span 5;aspect-ratio:1/1}.p5{grid-column:span 3;aspect-ratio:3/4}
.p6{grid-column:span 5;aspect-ratio:5/4}.p7{grid-column:span 3;aspect-ratio:3/4}.p8{grid-column:span 4;aspect-ratio:1/1}

/* 进入视野：起点也看得见 */
.js .rv{opacity:.55;translate:0 18px;transition:opacity .9s var(--ease),translate .9s var(--ease)}
.js .rv.in{opacity:1;translate:0 0}
.js .ph.rv{opacity:1;translate:0 0;clip-path:inset(5% 4% 5% 4%);transition:clip-path 1.1s var(--ease)}
.js .ph.rv.in{clip-path:inset(0)}

/* ===== 首页 ===== */
.page-index{background:var(--night);color:var(--snow)}
html:has(.page-index){background:var(--night)}
.page-index .w{max-width:1320px}
.home-head{display:grid;gap:12px;margin-bottom:clamp(30px,5vh,56px)}
.home-head h2{margin:0;font-size:clamp(32px,5.2vw,72px);line-height:1.14;letter-spacing:-.018em}
.home-head p{margin:0;max-width:34em;font-size:16px}
.alt{position:fixed;z-index:29;right:max(26px,env(safe-area-inset-right,0px));top:50%;translate:0 -50%;display:grid;justify-items:end;gap:10px;color:var(--snow);pointer-events:none;transition:color .35s;contain:layout style}
.alt.light{color:var(--pine)}
.alt-track{position:relative;width:1px;height:min(34vh,260px);background:color-mix(in srgb,currentColor 40%,transparent)}
.alt-track::before{content:"";position:absolute;inset:0 -4px;background:repeating-linear-gradient(to bottom,color-mix(in srgb,currentColor 55%,transparent) 0 1px,transparent 1px 10%)}
.alt-dot{position:absolute;left:-5px;top:-5px;width:11px;height:11px;border-radius:50%;background:var(--alpen);will-change:transform}
.alt-num{font:500 15px/1 var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.alt-num small{font-size:11px;opacity:.75;margin-left:3px}

.hero{position:relative;min-height:max(600px,88svh);overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;background:var(--night);isolation:isolate}
.hero>img{position:absolute;inset:-6% 0 -6%;width:100%;max-width:none;height:112%;object-fit:cover;object-position:50% 100%;z-index:-3;animation:settle 2.8s var(--ease) both;will-change:transform,translate}
.hero::after{content:"";position:absolute;inset:auto 0 0;height:30%;background:linear-gradient(transparent,var(--night));z-index:-1}
#stars{position:absolute;inset:0;width:100%;height:100%;z-index:-2}
.hero-copy{padding-top:calc(clamp(96px,17vh,170px) + env(safe-area-inset-top,0px))}
.hero h1{font-size:clamp(46px,9.3vw,136px);line-height:1.06;letter-spacing:-.025em;text-shadow:0 4px 40px rgba(3,8,18,.55)}
.line{display:block;overflow:hidden;padding-bottom:.06em}
.line>span{display:block;animation:rise 1.25s var(--ease) both}
.line:nth-child(2)>span{animation-delay:.14s}
.line:nth-child(3)>span{animation-delay:.28s;color:var(--alpen)}
.hero-sub{margin:clamp(18px,3vh,30px) 0 0;max-width:36em;text-wrap:pretty;font-size:clamp(15px,1.5vw,18px);line-height:1.75;text-shadow:0 1px 16px rgba(3,8,18,.8);animation:fadein 1.2s .6s var(--ease) both}
.hero-foot{display:flex;justify-content:space-between;gap:14px 20px;align-items:flex-end;padding-block:0 26px;font-size:13px;color:var(--mist);flex-wrap:wrap}
.hero-foot .eyebrow{font-weight:400;letter-spacing:.02em}
.go{display:inline-flex;align-items:center;gap:12px;color:var(--snow)}
.go i{display:block;width:1px;height:38px;background:linear-gradient(var(--snow),transparent);transform-origin:top;animation:drop 2.2s ease-in-out infinite}

.tools{position:relative;background:linear-gradient(var(--night),var(--dusk) 70%);padding-block:clamp(64px,10vh,120px) clamp(70px,11vh,130px);overflow:hidden;isolation:isolate;--tool-line:rgba(169,189,200,.28);--tool-sub:var(--mist);--tool-hi:var(--alpen);--tool-p:var(--snow)}
.tools .home-head p{color:var(--mist)}
.home-more{margin:clamp(20px,3vh,30px) 0 0;font-size:15px}
.home-more a{color:inherit;padding-bottom:3px;text-decoration:none;border-bottom:1px solid color-mix(in srgb,currentColor 45%,transparent);transition:color .25s,border-color .25s}
.home-more a:hover{color:var(--alpen);border-color:var(--alpen)}

.lab{background:linear-gradient(var(--dusk),var(--glacier) 22%);padding-block:clamp(70px,11vh,130px) 0}
.lab-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(30px,5vw,72px);align-items:start}
.lab .home-head{margin-bottom:0}
.lab .home-head p{color:#c5dbdf}
.stats{display:flex;flex-wrap:wrap;gap:22px 44px;margin-top:clamp(26px,4vh,40px)}
.stat b{display:block;font:300 clamp(46px,6.2vw,84px)/1 var(--numeral);letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--snow)}
.stat>span{display:block;margin-top:8px;font-size:14px;color:#c5dbdf;max-width:13em;line-height:1.55}
.more-links{display:flex;flex-wrap:wrap;gap:10px 26px;margin:clamp(24px,4vh,36px) 0 0;font-size:15px}
.more-links a{color:inherit;padding-bottom:3px;text-decoration:none;border-bottom:1px solid rgba(234,242,245,.45);transition:color .25s,border-color .25s}
.more-links a:hover{color:var(--alpen);border-color:var(--alpen)}
.probe{scroll-margin-top:70px;background:var(--ice);color:var(--pine);border-radius:4px;padding:clamp(20px,3vw,34px);display:grid;gap:18px;box-shadow:0 30px 80px rgba(2,20,28,.35);min-width:0}
.probe-top{display:flex;justify-content:space-between;gap:14px;align-items:baseline;flex-wrap:wrap}
.probe-q{font:700 clamp(20px,2.3vw,28px)/1.35 var(--display)}
.probe .mono-label{font:500 12px/1.4 var(--mono);letter-spacing:.14em;color:var(--slate)}
.opts{display:grid;gap:8px}
.opt{display:grid;grid-template-columns:2.2em minmax(0,1fr) auto;align-items:center;gap:8px;background:#fff;padding:14px 16px;border-radius:3px;font-size:16px;line-height:1.5;border:1px solid transparent}
.opt .k{font:500 15px var(--mono);color:var(--slate)}
.opt .mark{font:500 12px var(--body);color:var(--alpen-deep);visibility:hidden;white-space:nowrap}
.opt.pick{border-color:var(--alpen);background:#fff6f1}
.opt.pick .mark{visibility:visible}
.think{background:var(--pine);color:#d8e5e9;border-radius:3px;padding:14px 16px;font:400 14px/1.8 var(--mono);min-height:7.8em;overflow-wrap:anywhere}
.think em{font-style:normal;color:#7fa0ad}
.caret{display:inline-block;width:.55em;height:1em;background:var(--alpen);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite}
.swap{justify-self:start;font:500 15px var(--body);color:var(--snow);background:var(--pine);border:0;border-radius:3px;padding:12px 20px;cursor:pointer;display:inline-flex;gap:10px;align-items:center;transition:background .25s,translate .25s var(--ease)}
.swap:hover{background:var(--alpen-deep);translate:0 -1px}
.swap svg{width:16px;height:16px;transition:rotate .5s var(--ease)}
.swap.turn svg{rotate:180deg}
.probe-note{margin:0;font-size:13px;color:var(--slate);line-height:1.6}
.thaw{height:clamp(120px,20vh,220px);margin-top:clamp(50px,9vh,100px);background:linear-gradient(var(--glacier),var(--lake) 45%,var(--ice))}

.road{background:linear-gradient(var(--ice),var(--day) 30%);color:var(--pine);padding-block:clamp(30px,5vh,60px) clamp(70px,11vh,130px)}
.road .home-head p{color:var(--slate)}
.road .home-more a:hover{color:var(--alpen-deep);border-color:var(--alpen-deep)}

.sea{position:relative;background:linear-gradient(var(--day),#bfe0de 16%,var(--lake) 42%,var(--sea) 66%,var(--abyss));color:var(--snow);padding-top:clamp(120px,22vh,240px);overflow:hidden;isolation:isolate}
#waves{position:absolute;inset:auto 0 0;width:100%;height:62%;z-index:-1;display:block}
.zero{font:300 clamp(92px,22vw,300px)/.9 var(--numeral);letter-spacing:-.04em}
.zero small{font-size:.26em;letter-spacing:0;margin-left:.1em}
.about-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:24px clamp(30px,6vw,90px);margin-top:clamp(24px,5vh,50px);align-items:end;padding-bottom:clamp(30px,6vh,70px)}
.about-grid p{margin:0;font-size:clamp(17px,1.8vw,21px);line-height:1.75;max-width:30em}
.foot-links{display:grid;gap:10px;font-size:16px}
.foot-links a{display:flex;justify-content:space-between;gap:16px;padding-bottom:8px;color:inherit;text-decoration:none;border-bottom:1px solid rgba(234,242,245,.3);transition:color .25s,padding .35s var(--ease)}
.foot-links a:hover{color:var(--alpen);padding-left:8px}

/* ===== 栏目页 ===== */
.page-body{padding-block:clamp(28px,5vh,56px) clamp(50px,8vh,90px)}
.page-body .tool h3{font-size:clamp(22px,2.8vw,36px)}
.filter{display:flex;gap:22px;margin:0 0 18px;border-bottom:1px solid var(--line)}
.filter input{position:absolute;opacity:0;pointer-events:none}
.filter label{cursor:pointer;font-size:15px;color:var(--muted);padding:6px 0 10px;margin-bottom:-1px;border-bottom:2px solid transparent;transition:color .2s,border-color .25s;user-select:none;white-space:nowrap}
.filter label span{font:400 12px var(--mono);color:var(--faint);margin-left:3px}
.filter label:hover{color:var(--ink)}
.filter input:checked+label{color:var(--ink);border-bottom-color:var(--alpen)}
.filter input:focus-visible+label{outline:2px solid var(--alpen);outline-offset:3px}
.filterable:has(#f-proj:checked) .tool-list>li:not(.cat-project),
.filterable:has(#f-note:checked) .tool-list>li:not(.cat-note){display:none}
.page-picks .wrap{max-width:calc(860px + 40px)}
.post-list{list-style:none;padding:0;margin:0}
.post-list li{display:grid;grid-template-columns:7.2em minmax(0,1fr);gap:4px 14px;margin:0;padding:14px 0;border-bottom:1px solid var(--line)}
.post-list time{color:var(--faint);font:400 13px/1.9 var(--mono)}
.post-list a{font:700 18px/1.5 var(--display);text-decoration:none;color:var(--ink)}
.post-list a:hover{color:var(--alpen-deep)}
.post-list p{margin:2px 0 0;color:var(--muted);font-size:15px;line-height:1.7}
@media (max-width:520px){.post-list li{grid-template-columns:minmax(0,1fr)}}
.empty{color:var(--muted)}
.section-title{font:500 12.5px/1.6 var(--mono);letter-spacing:.06em;color:var(--faint);margin:48px 0 8px}

/* 游记相册 */
.gallery{columns:3 260px;column-gap:12px;margin:0 0 24px}
.gallery figure{break-inside:avoid;margin:0 0 12px}
.gallery img{display:block;width:100%;border:0;border-radius:2px}
.gallery figcaption{text-align:left;margin-top:4px;font-size:13px}

/* 收藏目录 */
.pk-bar-top{position:sticky;top:50px;z-index:5;background:var(--bg);margin:18px 0 4px}
.pk-bar-top .filter{margin:0;gap:18px;overflow-x:auto;scrollbar-width:none}
.pk-bar-top .filter::-webkit-scrollbar{display:none}
.pk-sort{display:flex;justify-content:flex-end;gap:2px;padding:8px 0 4px;font-size:13px}
.pk-sort input{position:absolute;opacity:0;pointer-events:none}
.pk-sort label{cursor:pointer;color:var(--faint);padding:2px 8px;border-radius:3px;transition:color .2s,background .2s}
.pk-sort label:hover{color:var(--ink)}
.pk-sort input:checked+label{color:var(--ink);background:var(--code-bg)}
.pk-sort input:focus-visible+label{outline:2px solid var(--alpen);outline-offset:2px}
.picks:has(#pf-dev:checked) :is(.pk,.pk-group):not(.g-dev),
.picks:has(#pf-ai:checked) :is(.pk,.pk-group):not(.g-ai),
.picks:has(#pf-daily:checked) :is(.pk,.pk-group):not(.g-daily),
.picks:has(#pf-skill:checked) :is(.pk,.pk-group):not(.k-skill),
.picks:has(#ps-star:checked) .by-group,
.picks:not(:has(#ps-star:checked)) .by-star{display:none}
.pk-h{font:700 clamp(20px,2.2vw,24px)/1.4 var(--display);margin:30px 0 2px}
.pk-list{list-style:none;margin:0;padding:0}
.pk{border-bottom:1px solid var(--line);margin:0}
.pk details{border:0;padding:0}
.pk summary{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:10px;align-items:baseline;position:relative;padding:13px 26px 14px 0;font-weight:400}
.pk summary::after{top:11px}
.pk summary:hover{color:inherit}
.pk-rank{font:400 13px var(--mono);color:var(--faint);min-width:1.6em}
.pk-name{grid-column:1;font-weight:600;font-size:16.5px;color:var(--ink);overflow-wrap:anywhere;transition:color .2s}
.pk-stars{grid-column:2;font:400 13px var(--mono);color:var(--muted);white-space:nowrap}
.pk-desc{grid-column:1/3;font-size:14.5px;color:var(--muted);line-height:1.7;margin-top:2px}
.pk summary:hover .pk-name,.pk details[open] .pk-name{color:var(--alpen-deep)}
.pk-bar{position:absolute;left:0;bottom:-1px;height:2px;background:var(--alpen);opacity:.35;border-radius:2px;transition:opacity .25s}
.pk summary:hover .pk-bar,.pk details[open] .pk-bar{opacity:.85}
.b0{width:1%}.b1{width:5%}.b2{width:10%}.b3{width:15%}.b4{width:20%}.b5{width:25%}.b6{width:30%}.b7{width:35%}.b8{width:40%}.b9{width:45%}.b10{width:50%}
.b11{width:55%}.b12{width:60%}.b13{width:65%}.b14{width:70%}.b15{width:75%}.b16{width:80%}.b17{width:85%}.b18{width:90%}.b19{width:95%}.b20{width:100%}
.pk-more{padding:0 0 14px;font-size:14.5px;animation:fadein .4s var(--ease) both}
.pk-more p{margin:0 0 6px}
.pk-meta{font:400 12.5px/1.7 var(--mono);color:var(--faint);overflow-wrap:anywhere}
.pk-used{color:var(--ink-2)}
.pk-go{display:inline-block;font-weight:600;text-decoration:none;border:1px solid var(--accent);border-radius:3px;padding:3px 12px;font-size:14px;margin-top:4px;transition:background .2s,color .2s,border-color .2s}
.pk-go:hover{background:var(--alpen-deep);border-color:var(--alpen-deep);color:#fff}
.pk-note{font-size:13.5px;color:var(--faint);margin:16px 0 0}
.pk-search{margin:0}
.pk-search input{width:100%;font:inherit;font-size:15px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:10px 14px;transition:border-color .2s}
.pk-search input:focus{outline:none;border-color:var(--alpen)}
.pk-hide{display:none!important}
.pk-empty{color:var(--muted);font-size:14.5px;padding:16px 0}
.pk summary:has(.pk-rank){grid-template-columns:auto minmax(0,1fr) auto}
.pk summary:has(.pk-rank) .pk-name{grid-column:2}
.pk summary:has(.pk-rank) .pk-stars{grid-column:3}
.pk summary:has(.pk-rank) .pk-desc{grid-column:2/4}

/* ===== 页脚 ===== */
footer.site{position:relative;background:var(--abyss);color:var(--mist);font:400 12px/1.7 var(--mono);padding-block:26px calc(24px + env(safe-area-inset-bottom,0px))}
footer.site .w{display:flex;justify-content:space-between;gap:10px 24px;flex-wrap:wrap}
footer.site p{margin:0}
footer.site a{color:inherit;text-decoration:none}
footer.site a:hover{color:var(--alpen)}
body:not(.page-index) footer.site{margin-top:clamp(50px,9vh,100px)}
body:not(.page-index) footer.site::before{content:"";position:absolute;left:0;right:0;bottom:100%;height:clamp(50px,9vh,100px);background:linear-gradient(transparent,var(--abyss))}

/* ===== 看大图（site.js） ===== */
html.lb-on{overflow:hidden}
.lb{position:fixed;inset:0;z-index:100;background:rgba(5,11,22,.97);display:flex;align-items:center;justify-content:center;animation:lb-in .18s ease both;touch-action:pan-y}
.lb[hidden]{display:none}
.lb-fig{margin:0;max-width:100%;max-height:100%;padding:56px 12px 64px;display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%}
.lb .lb-img{max-width:100%;max-height:calc(100vh - 140px);max-height:calc(100dvh - 140px);object-fit:contain;border:0;border-radius:2px;display:block;background:none;margin:0}
.lb-cap{color:#d6d4ce;font-size:14px;text-align:center;margin-top:10px;max-width:40em;line-height:1.6}
.lb-cap:empty{display:none}
.lb-btn{position:absolute;border:0;background:rgba(255,255,255,.08);color:#f2f0ea;cursor:pointer;border-radius:999px;width:44px;height:44px;font-size:26px;line-height:1;display:flex;align-items:center;justify-content:center;transition:background .2s}
.lb-btn:hover{background:rgba(255,255,255,.18)}
.lb-btn[hidden]{display:none}
.lb-close{top:10px;right:10px}.lb-prev{left:10px;top:50%;margin-top:-22px}.lb-next{right:10px;top:50%;margin-top:-22px}
.lb-count{position:absolute;top:22px;left:0;right:0;text-align:center;color:#a0a4ab;font:400 13px var(--mono);pointer-events:none}
@media (max-width:600px){.lb-prev,.lb-next{top:auto;bottom:12px;margin-top:0}.lb-prev{left:calc(50% - 56px)}.lb-next{right:calc(50% - 56px)}}

/* 代码块复制按钮 */
.pre-wrap{position:relative}
.pre-wrap pre{padding-right:64px}
.copy-btn{position:absolute;top:8px;right:8px;font:400 12px var(--body);color:#d8e5e9;background:rgba(234,242,245,.1);border:1px solid rgba(234,242,245,.2);border-radius:3px;padding:3px 9px;cursor:pointer;transition:background .2s,color .2s}
.copy-btn:hover{background:var(--alpen-deep);color:#fff}

@keyframes settle{from{transform:scale(1.09)}to{transform:scale(1)}}
@keyframes rise{from{transform:translateY(106%)}to{transform:translateY(0)}}
@keyframes fadein{from{opacity:0;translate:0 10px}to{opacity:1;translate:0 0}}
@keyframes drop{0%{transform:scaleY(0)}45%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}
@keyframes blink{to{opacity:0}}
@keyframes lb-in{from{opacity:0}to{opacity:1}}

/* ===== 响应式 ===== */
@media (min-width:1101px){
  .page-index .w{padding-right:max(96px,env(safe-area-inset-right,0px));padding-left:max(40px,env(safe-area-inset-left,0px))}
}
@media (max-width:1100px){.tool{grid-template-columns:minmax(0,1fr) auto}.tool p{grid-column:1/-1;grid-row:2}}
@media (max-width:820px){
  .lab-grid,.about-grid{grid-template-columns:minmax(0,1fr)}
  .alt{top:auto;bottom:calc(14px + env(safe-area-inset-bottom,0px));right:max(14px,env(safe-area-inset-right,0px));translate:none}
  .alt-track{display:none}
  .photos{grid-template-columns:repeat(2,minmax(0,1fr))}
  .p1,.p4,.p6{grid-column:1/-1;aspect-ratio:4/3}.p2,.p3,.p5,.p7{grid-column:span 1;aspect-ratio:3/4}
  .p8{grid-column:1/-1;aspect-ratio:16/10}
  #peek{display:none}
  .topnav{font-size:13.5px;gap:13px}
  body{font-size:16.5px}
}
@media (max-width:420px){.tool .tag{display:none}.tool{grid-template-columns:minmax(0,1fr)}.brand{font-size:19px}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .rv,.js .ph.rv{opacity:1;translate:0 0;clip-path:none}
  .read-progress{display:none}
}