/* TapeRelay 部署指南页（D-321）的样式。中英两种语言：[data-lang] 决定显示 .zh 还是 .en。
   少写字、多用图；能动就不静止，能立体就不平面（D-322）：首屏是 three.js 的 3D 场景（hero.js），卡片随鼠标倾斜，进入视野时翻转出现。
   系统设置了「减少动态效果」的，一律不动。 */
:root{--bg:#f6f7fb;--card:#fff;--text:#161d2b;--muted:#5d6879;--line:#e2e7ef;--brand:#3f5efb;--brand2:#7a5af8;--ok:#12a150;--warn:#d97706;--bad:#e5484d;--code:#f0f3f9;--term:#0f1420;--shadow:0 10px 30px rgba(20,30,60,.08);color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#0d1016;--card:#151a23;--text:#e6eaf2;--muted:#97a2b5;--line:#252d3b;--brand:#7d93ff;--brand2:#a48bff;--code:#1c2330;--term:#0a0d14;--shadow:0 10px 30px rgba(0,0,0,.25)}}
[data-lang="zh"] .en,[data-lang="en"] .zh{display:none!important}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
a{color:var(--brand)}
code,pre,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{background:var(--code);padding:1px 6px;border-radius:6px;font-size:.92em}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}

/* 顶栏、进度 */
header.bar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:10px;height:56px}
.grow{flex:1}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);text-decoration:none}
.logo i{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:inline-block;animation:spin3d 7s ease-in-out infinite}
@keyframes spin3d{0%,75%{transform:none}100%{transform:rotateY(360deg)}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;padding:8px 14px;font:inherit;font-size:14px;cursor:pointer;text-decoration:none;transition:transform .15s,border-color .15s}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn:active{transform:scale(.96)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));border:0;color:#fff;box-shadow:0 6px 18px color-mix(in srgb,var(--brand) 35%,transparent)}
.btn.primary:hover{color:#fff;filter:brightness(1.08)}
.btn.small{padding:4px 10px;font-size:13px}
.progress{border-top:1px solid var(--line)}
.progress ol{list-style:none;display:flex;gap:6px;margin:0 auto;padding:8px 20px;max-width:1040px}
.progress li{flex:1;min-width:0;perspective:300px}
.progress a{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--muted);font-size:13px;white-space:nowrap}
.progress a span:not(.n){min-width:0;overflow:hidden;text-overflow:ellipsis}
.progress .n{width:22px;height:22px;flex:none;border-radius:50%;display:grid;place-items:center;border:2px solid var(--line);font-size:12px;font-weight:600;transition:background .3s,border-color .3s,color .3s}
.progress li.done .n{background:var(--ok);border-color:var(--ok);color:#fff;animation:coin .7s ease both}
.progress li.done a{color:var(--text)}
.progress .bar2{height:3px;background:var(--line);border-radius:3px;margin-top:6px;overflow:hidden}
.progress .bar2 span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--ok),#4ade80);transition:width .6s}
.progress li.done .bar2 span{width:100%}

/* 首屏：标题 + three.js 的 3D 场景（hero.js 画在 canvas 上，三个标签由 hero.js 按 3D 位置摆放） */
.hero{padding:44px 0 26px;text-align:center}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.2;margin:0 0 10px;letter-spacing:-.5px;text-wrap:balance}
.hero h1 b{white-space:nowrap;background:linear-gradient(90deg,var(--brand),var(--brand2),var(--brand)) 0 0/200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 6s linear infinite}
@keyframes shine{to{background-position:200% 0}}
.hero p.lead{color:var(--muted);font-size:18px;margin:0;letter-spacing:.5px;text-wrap:balance}
.stage{position:relative;height:clamp(220px,min(38vw,100svh - 250px),390px);margin:10px -20px 0;touch-action:pan-y;cursor:grab;user-select:none;-webkit-user-select:none}
.stage.grabbing{cursor:grabbing}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;--fade:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent),linear-gradient(#000 84%,transparent);-webkit-mask-image:var(--fade);-webkit-mask-composite:source-in;mask-image:var(--fade);mask-composite:intersect}
.lb{position:absolute;left:0;top:0;padding:5px 12px;border-radius:10px;background:var(--card);border:1px solid var(--line);box-shadow:0 10px 24px rgba(20,30,60,.14);line-height:1.35;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .8s}
.stage.ready .lb{opacity:1}
.lb b{display:block;font-size:13px}
.lb small{display:block;font-size:12px;color:var(--muted)}
.lb.hot{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border:0}
.lb.hot small{color:#ebe8ff}
.drag{position:absolute;right:26px;bottom:8px;color:var(--muted);font-size:20px;opacity:0;transition:opacity .8s;pointer-events:none;animation:rock 3.2s ease-in-out infinite}
.stage.ready .drag{opacity:.6}
.stage.grabbing .drag{opacity:0}
@keyframes rock{50%{rotate:-50deg}}
.paths{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:6px;perspective:1000px}
.path{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;padding:18px 12px;border-radius:18px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:var(--text);box-shadow:var(--shadow)}
.path:hover{border-color:var(--brand)}
.path .ico{font-size:34px;line-height:1.1;animation:float 3.6s ease-in-out infinite}
.path:nth-child(2) .ico{animation-delay:-1.2s}.path:nth-child(3) .ico{animation-delay:-2.4s}
@keyframes float{50%{translate:0 -7px}}
.path b{font-size:16px}

/* 段落 */
section.block{padding:52px 0 8px}
section.block>h2{font-size:26px;margin:0 0 20px;perspective:400px}
.step-no{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:16px;margin-right:10px;vertical-align:3px;box-shadow:0 6px 14px color-mix(in srgb,var(--brand) 35%,transparent)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:var(--shadow)}
.check{display:inline-flex;align-items:center;gap:8px;font-size:14px;cursor:pointer;user-select:none}
.check input{width:18px;height:18px;accent-color:var(--ok)}
.aside{margin:16px 0 0;font-size:14px;text-align:center}

/* 流程图：一排卡片，后面一条流动的虚线，一个发光的小球从头走到尾 */
.chain{list-style:none;margin:0;padding:0;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);gap:34px;position:relative;perspective:1200px}
.chain::before{content:"";position:absolute;left:8%;right:8%;top:50%;height:3px;margin-top:-1.5px;background:repeating-linear-gradient(90deg,color-mix(in srgb,var(--brand) 55%,transparent) 0 8px,transparent 8px 16px);animation:dash 1s linear infinite}
.chain::after{content:"";position:absolute;top:50%;left:8%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fff,var(--brand) 60%);box-shadow:0 0 16px 2px var(--brand);animation:travel 3.6s cubic-bezier(.45,0,.55,1) infinite}
@keyframes travel{0%{left:8%;opacity:0}10%,90%{opacity:1}100%{left:92%;opacity:0}}
.chain>li{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:20px 14px 16px;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.chain .ico{font-size:36px;line-height:1.15;margin-bottom:2px;filter:drop-shadow(0 8px 8px rgba(20,30,60,.18))}
.chain b{font-size:15px}
.chain small{color:var(--muted);font-size:13px;line-height:1.5}
.chain code{overflow-wrap:anywhere}
.chain .check{margin-top:auto;padding-top:8px}
.chain.mini>li{padding:14px 10px 12px}
.chain.mini .ico{font-size:28px}
.ports{display:flex;gap:6px;margin:6px 0 2px}
.ports>span{display:flex;flex-direction:column;align-items:center;min-width:56px;padding:6px 6px 3px;border-radius:12px;background:var(--code);animation:glow 3s ease-in-out infinite}
.ports>span:nth-child(2){animation-delay:.5s}.ports>span:nth-child(3){animation-delay:1s}
.ports>span.main{background:color-mix(in srgb,var(--brand) 16%,var(--card))}
.ports code{background:none;padding:0;font-weight:700;font-size:15px}
.ports small{font-size:12px}
@keyframes glow{0%,100%{box-shadow:0 0 0 0 transparent}50%{box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 40%,transparent)}}
.cf{display:flex;align-items:center;gap:6px;margin:4px 0 0}
.cf svg{width:92px;height:auto;overflow:visible}
.cf small{font-size:12px}
.cf .x{transform-box:fill-box;transform-origin:center;animation:shake 2.6s ease-in-out infinite}
.cf .v{transform-box:fill-box;transform-origin:center;animation:pop2 2.6s ease-in-out infinite}
@keyframes shake{0%,70%,100%{transform:none}75%{transform:rotate(-14deg)}85%{transform:rotate(12deg)}}
@keyframes pop2{0%,70%,100%{transform:none}80%{transform:scale(1.25)}}

/* 生成命令 */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
label.f{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin:12px 0 4px}
label.f:first-child{margin-top:0}
.opt{font-style:normal;font-weight:400;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:0 7px}
input.t,select.t{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit;font-size:15px}
input.t:focus,select.t:focus{outline:2px solid color-mix(in srgb,var(--brand) 40%,transparent);border-color:var(--brand)}
.row{display:flex;gap:8px;align-items:center}
.row input.t{flex:1;min-width:0}
.hint{font-size:13px;color:var(--muted);margin-top:4px;min-height:20px}
.hint.ok{color:var(--ok)}.hint.warn{color:var(--warn)}.hint.bad{color:var(--bad)}
.cmd{position:relative;background:var(--term);color:#e7ecf5;border-radius:12px;padding:14px 16px;margin:8px 0 4px;font:14px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all;white-space:pre-wrap;box-shadow:var(--shadow)}
.cmd .btn{float:right;margin:-6px -8px 6px 12px;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#fff}
.cmd .p{color:#7ee787;user-select:none}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:99px;padding:4px 14px;font:inherit;font-size:13px;cursor:pointer;transition:background .2s,color .2s}
.tabs button.on{background:var(--text);color:var(--bg);border-color:var(--text)}

/* 终端：像产品照一样斜着放，鼠标移上去转正 */
.term{background:var(--term);border-radius:14px;overflow:hidden;box-shadow:0 24px 50px rgba(10,15,30,.28);border:1px solid #1f2633;transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.term .tb{display:flex;align-items:center;gap:6px;padding:9px 12px;background:#161c28}
.term .tb i{width:11px;height:11px;border-radius:50%;background:#ff5f57}.term .tb i:nth-child(2){background:#febc2e}.term .tb i:nth-child(3){background:#28c840}
.term .tb span{margin-left:8px;color:#8b95a7;font-size:12px}
.term .tb button{margin:-4px -6px -4px auto;padding:4px 8px;background:none;border:0;color:#8b95a7;cursor:pointer;font-size:15px}
.term pre{margin:0;padding:14px 16px;min-height:330px;color:#d5dbe6;font-size:13px;line-height:1.6;white-space:pre-wrap}
.term .g{color:#7ee787}.term .y{color:#f2cc60}.term .c{color:#79c0ff}.term .d{color:#8b95a7}.term .b{color:#fff;font-weight:700}
.cursor{display:inline-block;width:8px;height:15px;background:#d5dbe6;vertical-align:-2px;animation:blinkc 1s steps(1) infinite}
@keyframes blinkc{50%{opacity:0}}
@media (min-width:821px){#term{transform:perspective(1400px) rotateY(-9deg) rotateX(3deg)}#manage .term{transform:perspective(1400px) rotateY(9deg) rotateX(3deg)}#term:hover,#manage .term:hover{transform:none}}

/* AI */
.nokey{display:flex;align-items:center;justify-content:center;gap:12px;margin:20px 0 10px;font-size:14px}
.nokey .ico{position:relative;font-size:22px}
.nokey .ico::after{content:"";position:absolute;left:-4px;right:-4px;top:50%;height:3px;border-radius:2px;background:var(--bad);transform:rotate(-40deg)}
.prompt{max-height:9.8em;overflow:hidden;cursor:pointer;-webkit-mask-image:linear-gradient(#000 55%,transparent);mask-image:linear-gradient(#000 55%,transparent);transition:max-height .6s ease}
.prompt.open{max-height:60em;cursor:auto;-webkit-mask-image:none;mask-image:none}
.more{display:block;margin:-4px auto 0;border:0;background:none;color:var(--muted);font-size:22px;line-height:1;cursor:pointer;transition:transform .4s;animation:nudge 2s ease-in-out infinite}
.prompt.open+.more{transform:rotate(180deg);animation:none}
@keyframes nudge{50%{translate:0 4px}}

/* 从外面检查：五个点，结果出来时像硬币一样翻过来 */
.probe{list-style:none;margin:24px 0 4px;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));perspective:500px}
.probe li{position:relative;text-align:center;padding-top:54px;min-width:0}
.probe li::before,.probe li::after{content:"";position:absolute;top:21px;right:50%;width:100%;height:4px;border-radius:2px;background:var(--line)}
.probe li::after{transform:scaleX(0);transform-origin:left;transition:transform .7s ease}
.probe li:first-child::before,.probe li:first-child::after{display:none}
.probe li.ok::after{background:var(--ok);transform:none}
.probe li.warn::after{background:var(--warn);transform:none}
.probe li.bad::after{background:var(--bad);transform:none}
.probe i{position:absolute;z-index:1;top:0;left:50%;width:46px;height:46px;margin-left:-23px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-weight:800;font-size:19px;color:#fff;background:var(--card);border:3px solid var(--line)}
.probe li.ok i{background:radial-gradient(circle at 35% 30%,#5ee59a,var(--ok));border-color:var(--ok);animation:coin .7s ease both}
.probe li.warn i{background:radial-gradient(circle at 35% 30%,#fbbf24,var(--warn));border-color:var(--warn);animation:coin .7s ease both}
.probe li.bad i{background:radial-gradient(circle at 35% 30%,#ff9294,var(--bad));border-color:var(--bad);animation:coin .7s ease both}
.probe li.run i{border-color:var(--brand) var(--line) var(--line);animation:spin .9s linear infinite}
.probe b{display:block;font-size:14px;line-height:1.3;word-break:keep-all}
.probe small{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 4px}
@keyframes coin{from{transform:rotateY(180deg) scale(.5)}to{transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
.results{list-style:none;margin:10px 0 0;padding:0}
.results li{display:flex;gap:10px;padding:10px 0;border-top:1px solid var(--line);animation:rise .4s ease both}
.results li .m{width:22px;height:22px;flex:none;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700}
.results li.warn .m{background:var(--warn)}.results li.bad .m{background:var(--bad)}
.results li div{flex:1;min-width:0}
.results li b{display:block;font-size:14px}
.results li small{display:block;color:var(--muted);word-break:break-word}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.celebrate{margin-top:14px;padding:16px;border-radius:14px;text-align:center;background:color-mix(in srgb,var(--ok) 12%,var(--card));border:1px solid color-mix(in srgb,var(--ok) 40%,var(--line));animation:pop .5s ease both}
.celebrate p{margin:10px 0 0}
@keyframes pop{0%{transform:scale(.94);opacity:0}60%{transform:scale(1.02)}100%{transform:none;opacity:1}}

/* 管理：点一下复制的命令砖块 */
.prefix{margin:0 0 10px;color:var(--muted);font-size:14px}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;perspective:1000px}
.tile{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:1px;padding:12px 12px 10px;border-radius:14px;border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;text-align:left;cursor:pointer;box-shadow:var(--shadow);transition:scale .15s}
.tile:hover{border-color:var(--brand)}
.tile:active{scale:.95}
.tile .ico{font-size:22px;line-height:1.3}
.tile b{font-size:14px}
.tile code{font-size:12px;white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}
.cq{container-type:inline-size}
@container (max-width:440px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.tile:last-child:nth-child(odd){grid-column:1/-1}}

/* 常见问题：一问一句 */
.qa{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px;perspective:1000px}
.qa>div{position:relative;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 16px}
.qa b{display:block;font-size:15px;margin-bottom:2px}
.qa span{color:var(--muted);font-size:14px}

footer.foot{margin-top:56px;padding:30px 0 50px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer.foot .wrap{display:flex;flex-wrap:wrap;gap:10px 22px}

/* 随鼠标倾斜（app.js 设 --rx、--ry），图标浮在卡片前面，带一块反光 */
.tilt{transform:perspective(800px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transform-style:preserve-3d;transition:transform .6s cubic-bezier(.2,.8,.2,1),border-color .2s,scale .15s}
.tilt.tilting{transition:transform .08s linear,border-color .2s,scale .15s}
.tilt .ico{transform:translateZ(34px)}
.tilt::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at var(--gx,50%) var(--gy,50%),rgba(255,255,255,.22),transparent 55%);opacity:0;transition:opacity .3s}
.tilt.tilting::after{opacity:1}

/* 进入视野时翻转出现（浏览器支持滚动驱动的动画才有；不支持的照常显示） */
@supports (animation-timeline:view()){
  .block>h2,.chain>li,.path,.tile,.qa>div,.grid2>*,#check .card,.nokey,.prompt{animation:enter linear both;animation-timeline:view();animation-range:entry 0% entry 90%}
  .chain>li:nth-child(2),.tile:nth-child(3n+2),.qa>div:nth-child(2n){animation-range:entry 10% entry 100%}
  .chain>li:nth-child(3),.tile:nth-child(3n),.chain>li:nth-child(4){animation-range:entry 20% cover 30%}
  .block>h2 .step-no{display:inline-grid;animation:flip linear both;animation-timeline:view();animation-range:entry 20% cover 25%}
}
@keyframes enter{from{opacity:0;translate:0 46px;rotate:x -28deg}to{opacity:1;translate:0 0;rotate:x 0deg}}
@keyframes flip{from{rotate:y 180deg;scale:.6}to{rotate:y 0deg;scale:1}}

/* 撒花 */
.confetti{position:fixed;z-index:80;width:0;height:0;pointer-events:none;perspective:700px}
.confetti i{position:absolute;width:9px;height:14px;margin:-7px 0 0 -4px;border-radius:2px;background:var(--c);animation:burst var(--d) cubic-bezier(.2,.7,.3,1) forwards}
@keyframes burst{0%{transform:translate3d(0,0,0) rotate3d(1,1,0,0deg);opacity:1}40%{transform:translate3d(calc(var(--x) * .7),var(--y),0) rotate3d(1,1,0,calc(var(--r) * .5));opacity:1}100%{transform:translate3d(var(--x),calc(var(--y) + 460px),0) rotate3d(1,1,0,var(--r));opacity:0}}

/* 新手指引 */
.tour-spot{position:fixed;z-index:61;border-radius:16px;box-shadow:0 0 0 9999px rgba(8,12,24,.62);transition:all .35s ease;pointer-events:none}
.tour-tip{position:fixed;z-index:62;width:min(340px,calc(100vw - 24px));background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:0 18px 50px rgba(0,0,0,.25);transition:top .35s ease,left .35s ease;animation:pop3d .45s ease both;transform-origin:top center}
.tour-tip h4{margin:0 0 4px;font-size:16px}
.tour-tip p{margin:0 0 12px;color:var(--muted);font-size:14px}
.tour-tip .row{justify-content:space-between}
.tour-tip .dots{display:flex;gap:5px}
.tour-tip .dots i{width:6px;height:6px;border-radius:50%;background:var(--line);transition:background .3s,width .3s}
.tour-tip .dots i.on{background:var(--brand);width:16px;border-radius:3px}
@keyframes pop3d{from{opacity:0;transform:perspective(600px) rotateX(-35deg) translateY(10px)}to{opacity:1;transform:none}}
.welcome{position:fixed;right:18px;bottom:18px;z-index:50;width:min(320px,calc(100vw - 36px));background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:0 18px 50px rgba(0,0,0,.18);animation:pop3d .6s ease both;transform-origin:bottom center}
.welcome h4{margin:0 0 2px}
.welcome p{margin:0 0 12px;color:var(--muted);font-size:14px}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:70;background:var(--text);color:var(--bg);padding:8px 16px;border-radius:99px;font-size:14px;animation:pop .3s ease both}

/* 宽屏：首屏的 3D 场景铺开（最宽 1500px）；大屏再放宽版面、加大场景 */
@media (min-width:1200px){.stage{width:min(100vw - 40px,1500px);margin-left:calc(50% - min(50vw - 20px,750px));margin-right:0}}
@media (min-width:1600px){
  .wrap,.progress ol{max-width:1200px}
  .hero h1{font-size:52px}
  .stage{height:clamp(390px,100svh - 400px,480px)}
}

/* 窄屏：流程图改成竖排的时间线，图标是线上的节点，文字在右边 */
@media (max-width:820px){.grid2{grid-template-columns:1fr}}
@media (max-width:720px){
  .chain{grid-auto-flow:row;gap:12px}
  .chain::before{left:38px;right:auto;top:36px;bottom:36px;width:3px;height:auto;margin:0 0 0 -1.5px;background:repeating-linear-gradient(180deg,color-mix(in srgb,var(--brand) 55%,transparent) 0 8px,transparent 8px 16px);animation-name:dashv}
  .chain::after{left:38px;animation-name:travelv}
  .chain>li,.chain.mini>li{align-items:flex-start;justify-content:center;gap:2px;min-height:76px;padding:12px 14px 12px 80px;text-align:left;background:none;border:0;box-shadow:none}
  .chain>li::before{content:"";position:absolute;inset:0 0 0 66px;z-index:-1;border-radius:16px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}
  .chain .ico,.chain.mini .ico{position:absolute;left:14px;top:50%;width:48px;height:48px;margin:-24px 0 0;display:grid;place-items:center;border-radius:50%;background:var(--card);border:2px solid color-mix(in srgb,var(--brand) 30%,var(--line));box-shadow:0 6px 14px rgba(20,30,60,.12);font-size:24px;line-height:1;filter:none}
  .chain .check{margin-top:4px;padding-top:0}
  .paths{grid-template-columns:1fr}
  .path{flex-direction:row;justify-content:center;padding:12px}
  .path .ico{font-size:26px}
}
@keyframes dashv{to{background-position:0 16px}}
@keyframes travelv{0%{top:36px;opacity:0}10%,90%{opacity:1}100%{top:calc(100% - 36px);opacity:0}}
@media (max-width:640px){
  .hero{padding-top:30px}
  .stage{height:250px}
  .lb{padding:4px 9px}
  .lb small{display:none}
  .progress ol{padding:0 12px 6px;gap:4px}
  .progress li{flex:1 1 auto}
  .progress a{gap:4px;padding:7px 0 5px;font-size:12px}
  .progress .n{width:20px;height:20px;font-size:11px}
  .probe b{font-size:12px}
  .probe small{display:none}
  .term pre{min-height:300px;padding:12px;font-size:12px}
}
/* 矮屏（手机横放）：进度条收起，首屏给场景留地方 */
@media (max-height:500px){
  html{scroll-padding-top:70px}
  .progress{display:none}
  .hero{padding-top:20px}
}
/* 触屏：勾选框、小按钮的可点范围放大 */
@media (pointer:coarse){
  .check{min-height:40px}
  .progress ol{padding-top:0;padding-bottom:6px}
  .progress a{padding:7px 0 5px}
  .more{padding:8px 18px}
  .term .tb button{margin:-8px -10px -8px auto;padding:8px 12px}
  a.doc{display:inline-block;padding:8px 0}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}