/* Pic2Vector landing — prototype stylesheet + self-hosted fonts. */
@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:100 900;src:url('/h/fonts/inter-latin-ext-wght-normal.34b9c504ca.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:100 900;src:url('/h/fonts/inter-latin-wght-normal.3100e775e8.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:400;src:url('/h/fonts/jetbrains-mono-latin-400-normal.14425ba9c6.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:700;src:url('/h/fonts/jetbrains-mono-latin-700-normal.d0d4e81880.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--red:#E30613;--on-red:#fff;--bg:#fff;--alt:#F4F4F0;--ink:#111;--mute:#666;--rule:#111;--soft:#d6d6d0;--grid:rgba(17,17,17,.055);
--sans:Inter,"Helvetica Neue",Helvetica,Arial,sans-serif;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
--pad:clamp(16px,3.2vw,40px);--max:1440px;--ease:cubic-bezier(.2,.7,0,1);color-scheme:light}
:is([data-theme=dark],.dark){--bg:#0b0b0b;--alt:#141414;--ink:#f5f5f2;--mute:#9a9a9a;--rule:#f5f5f2;--soft:#2c2c2c;--grid:rgba(255,255,255,.05);color-scheme:dark}
*,*:before,*:after{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:64px}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:8px;top:8px;z-index:200;background:var(--red);color:#fff;padding:10px 14px;font:600 12px var(--mono);transform:translateY(-200%)}
.skip:focus{transform:none}
.mono{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase}
/* page grid overlay */
.gridbg{position:fixed;inset:0;pointer-events:none;z-index:0}
.gridbg div{max-width:var(--max);height:100%;margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:repeat(12,1fr);gap:0 24px}
.gridbg span{border-left:1px solid var(--grid);border-right:1px solid var(--grid)}
.grain{position:fixed;inset:-50%;pointer-events:none;z-index:1;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
:is([data-theme=dark],.dark) .grain{opacity:.06}
main,header,footer,.mobile{position:relative;z-index:2}
.w{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.g{display:grid;grid-template-columns:repeat(12,1fr);gap:0 24px}
/* logo */
.logo{display:inline-flex;align-items:center;gap:3px;font-weight:900;letter-spacing:.06em;font-size:14px;text-transform:uppercase}
.logo b{display:inline-grid;place-items:center;width:20px;height:20px;background:var(--red);color:#fff;font-size:12px;transition:transform .4s var(--ease)}
.logo:hover b{transform:rotate(-90deg)}
/* nav */
.nav{position:sticky;top:0;z-index:60;background:var(--bg);border-bottom:1px solid var(--rule)}
.nav .w{display:flex;align-items:stretch;height:56px}
.nav .logo{margin-right:auto}
.coord{align-self:center;margin-right:28px;color:var(--mute)}
.links{display:flex}
.links>a,.links>.dd>button{position:relative;display:inline-flex;align-items:center;gap:6px;height:100%;padding:0 18px;font:600 11px var(--sans);letter-spacing:.14em;text-transform:uppercase;overflow:hidden}
.links>a:after,.links>.dd>button:after{content:"";position:absolute;left:18px;right:18px;bottom:14px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease)}
.links>a:hover:after,.links>.dd>button:hover:after,.dd.open>button:after{transform:scaleX(1);transform-origin:left}
.dd{position:relative}
.dd svg{transition:transform .3s}.dd.open svg{transform:rotate(180deg)}
.menu{position:absolute;top:100%;left:0;width:520px;background:var(--bg);border:1px solid var(--rule);display:grid;grid-template-columns:1fr 1fr;clip-path:inset(0 0 100% 0);transition:clip-path .45s var(--ease);visibility:hidden}
.dd.open .menu{clip-path:inset(0 0 0 0);visibility:visible}
.menu a{padding:14px 16px;border-bottom:1px solid var(--soft);border-right:1px solid var(--soft);transition:background .2s,color .2s}
.menu a:nth-child(even){border-right:0}.menu a:nth-last-child(-n+2){border-bottom:0}
.menu a:hover{background:var(--red);color:#fff}.menu a:hover span{color:#fff}
.menu strong{display:block;font-size:13px}.menu span{display:block;font-size:11px;color:var(--mute);margin-top:2px}
.right{display:flex;align-items:center;gap:10px;margin-left:16px}
.ib{flex:none;width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--rule);transition:background .2s,color .2s}
.ib:hover,.burger[aria-expanded=true]{background:var(--ink);color:var(--bg)}
.ic-sun{display:none}:is([data-theme=dark],.dark) .ic-sun{display:block}:is([data-theme=dark],.dark) .ic-moon{display:none}
select.lang{height:34px;border:1px solid var(--rule);background:var(--bg);color:var(--ink);padding:0 26px 0 10px;font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;appearance:none;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:right 13px center,right 9px center;background-size:4px 4px;background-repeat:no-repeat}
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;height:34px;padding:0 16px;font:700 11px var(--sans);letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;overflow:hidden;border:1px solid transparent;transition:color .3s}
.btn>*{position:relative;z-index:1}
.btn:before{content:"";position:absolute;inset:0;transform:translateY(101%);transition:transform .4s var(--ease)}
.btn:hover:before{transform:none}
.btn-r{background:var(--red);color:#fff;border-color:var(--red)}.btn-r:before{background:var(--ink)}.btn-r:hover{color:var(--bg);border-color:var(--ink)}
.btn-o{border-color:var(--rule)}.btn-o:before{background:var(--ink)}.btn-o:hover{color:var(--bg)}
.btn-w{background:#fff;color:#111;height:56px;padding:0 28px;font-size:12px}.btn-w:before{background:#111}.btn-w:hover{color:#fff}
.btn .ar{display:inline-block;transition:transform .35s var(--ease)}.btn:hover .ar{transform:translateX(4px)}
.burger,.mobile{display:none}
/* reveal */
.js .rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .rv.in{opacity:1;transform:none}
.js .clip{clip-path:inset(0 0 100% 0);transition:clip-path 1.1s var(--ease)}
.js .clip.in{clip-path:inset(0 0 0 0)}
.ln{display:block;overflow:hidden;padding-bottom:.14em;margin-bottom:-.14em}
.ln>span{display:block}
.js .ln>span{transform:translateY(105%);transition:transform 1.1s var(--ease)}
.js .in .ln>span{transform:none}
.in .ln:nth-child(2)>span{transition-delay:.08s}.in .ln:nth-child(3)>span{transition-delay:.16s}.in .ln:nth-child(4)>span{transition-delay:.24s}
/* HERO */
.hero{position:relative;border-bottom:1px solid var(--rule);overflow:hidden;cursor:crosshair}
.meta{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 0;border-bottom:1px solid var(--soft);color:var(--mute)}
.meta b{color:var(--red);font-weight:700}
.ghost{position:absolute;right:-.06em;top:36px;font:900 clamp(160px,30vw,460px)/.8 var(--sans);letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1px var(--soft);pointer-events:none;user-select:none;z-index:0}
h1{position:relative;z-index:1;font-size:clamp(46px,10.6vw,164px);line-height:.86;letter-spacing:-.055em;font-weight:900;padding:40px 0 0;text-wrap:balance}
h1 .thin{font-weight:300;letter-spacing:-.05em}
h1 em{font-style:normal;color:var(--red)}
h1 .dash{font-weight:300}
.hero-row{position:relative;z-index:1;padding:48px 0 56px;align-items:start}
.hero-l{grid-column:1/span 5;display:flex;flex-direction:column;gap:28px}
.lead{font-size:18px;line-height:1.5;max-width:30em;color:var(--ink)}
.lead span{color:var(--mute)}
.tags{display:flex;flex-wrap:wrap;list-style:none;margin:0;padding:0;border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
.tag{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.tag i{width:6px;height:6px;background:var(--red)}
.sec .tags{margin:0 0 var(--s5)}
.alt-link{color:var(--mute)}.alt-link a{color:var(--ink);font-weight:700;background:linear-gradient(var(--red),var(--red)) 0 100%/100% 2px no-repeat;transition:background-size .3s,color .3s;padding:0 2px}
.alt-link a:hover{background-size:100% 100%;color:#fff}
/* dropzone */
.drop{grid-column:7/-1;position:relative;display:block;border:1px solid var(--rule);background:var(--bg);min-height:400px;cursor:pointer;overflow:hidden;transition:background .3s}
.drop .corner{position:absolute;width:10px;height:10px;border:1px solid var(--red);background:var(--bg);z-index:3}
.c1{left:-5px;top:-5px}.c2{right:-5px;top:-5px}.c3{left:-5px;bottom:-5px}.c4{right:-5px;bottom:-5px}
.drop-top{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--soft);color:var(--mute);position:relative;z-index:2}
.bez{position:absolute;left:0;right:0;top:48px;width:100%;height:46%;z-index:0;pointer-events:none}
.bez .curve{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2.6s var(--ease) .4s forwards}
.bez .curve.r{stroke:var(--red);stroke-width:2;animation-delay:.9s}
.bez .h{stroke:var(--mute);stroke-width:1;opacity:0;animation:fade .6s 1.8s forwards}
.bez .a{fill:var(--bg);stroke:var(--red);stroke-width:1.5;opacity:0;animation:fade .4s 1.6s forwards}
.bez .hd{fill:var(--mute);opacity:0;animation:fade .6s 1.9s forwards}
@keyframes draw{to{stroke-dashoffset:0}}@keyframes fade{to{opacity:1}}
.drop-body{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;min-height:360px;padding:28px}
.drop-cta{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.drop h2{font-size:clamp(32px,3.4vw,52px);font-weight:900;letter-spacing:-.045em;line-height:.92}
.drop .sub{margin-top:12px;color:var(--mute)}
.drop .sub u{color:var(--ink);text-decoration:none;border-bottom:2px solid var(--red)}
.plus{flex:none;width:72px;height:72px;background:var(--red);color:#fff;display:grid;place-items:center;transition:transform .5s var(--ease)}
.drop:hover .plus{transform:rotate(90deg)}
.drop.over{background:var(--red);color:#fff}
.drop.over .sub,.drop.over .drop-top{color:#fff}.drop.over .plus{background:#fff;color:var(--red)}
.drop.over .bez .curve{stroke:#fff}
.drop:focus-within{outline:2px solid var(--red);outline-offset:3px}
.preview{display:none;gap:24px;align-items:flex-end;flex-wrap:wrap}
.drop.has .preview{display:flex}.drop.has .empty,.drop.has .bez{display:none}
.preview img{width:160px;height:160px;object-fit:cover;border:1px solid var(--rule);background:repeating-conic-gradient(var(--alt) 0 25%,var(--bg) 0 50%) 0 0/14px 14px}
.preview .fn{font:700 13px var(--mono);word-break:break-all;margin-bottom:6px}
.preview .note{font-size:13px;color:var(--mute);margin-bottom:16px;max-width:28em}
.acts{display:flex;gap:8px;flex-wrap:wrap}
/* crosshair */
.xh{position:absolute;inset:0;pointer-events:none;z-index:4;opacity:0;transition:opacity .3s}
.hero:hover .xh{opacity:1}
.xh .x,.xh .y{position:absolute;background:var(--red);opacity:.45}
.xh .x{left:0;right:0;height:1px;top:var(--cy,50%)}.xh .y{top:0;bottom:0;width:1px;left:var(--cx,50%)}
.xh .pt{position:absolute;left:var(--cx);top:var(--cy);width:9px;height:9px;margin:-4px 0 0 -4px;border:1px solid var(--red);background:var(--bg)}
.xh .lab{position:absolute;left:var(--cx);top:var(--cy);transform:translate(10px,10px);color:var(--red);font-size:10px}
@media(hover:none){.xh{display:none}.hero{cursor:auto}}
/* marquee */
.mq{background:var(--red);color:#fff;overflow:hidden;border-bottom:1px solid var(--rule);position:relative;z-index:2}
.mq-t{display:flex;width:max-content;animation:mq 32s linear infinite}
.mq:hover .mq-t{animation-play-state:paused}
.mq-t span{display:flex;align-items:center;gap:28px;padding:18px 28px 18px 0;font:800 clamp(22px,2.6vw,40px)/1 var(--sans);letter-spacing:-.03em;white-space:nowrap}
.mq-t span i{font:400 .55em var(--mono);font-style:normal;opacity:.8}
.mq-t svg{flex:none}
@keyframes mq{to{transform:translateX(-50%)}}
/* section frame */
.sec{position:relative;border-bottom:1px solid var(--rule);padding:clamp(72px,9vw,128px) 0}
.sec{--sbg:var(--bg)}.sec.alt{background:var(--alt);--sbg:var(--alt)}
.sh{align-items:end;margin-bottom:56px}
.num{grid-column:1/span 3;font:900 clamp(96px,13vw,200px)/.78 var(--sans);letter-spacing:-.07em;color:var(--ink)}
.num.red{-webkit-text-stroke:0;color:var(--red)}
.sh-t{grid-column:4/span 7}
.kick{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:var(--mute)}
.kick:before{content:"";width:28px;height:2px;background:var(--red)}
h2.t{font-size:clamp(36px,5.2vw,80px);line-height:.92;letter-spacing:-.05em;font-weight:900}
h2.t .thin{font-weight:300}
.sh-d{grid-column:4/span 6;margin-top:20px;color:var(--mute);max-width:34em}
.sh-m{grid-column:11/span 2;justify-self:end;text-align:right;color:var(--mute)}
/* compare */
.cmp-g{align-items:stretch}
.cmp-side{grid-column:1/span 3;display:flex;flex-direction:column;justify-content:space-between;gap:24px;border-top:1px solid var(--rule);padding-top:16px}
.legend{display:grid;gap:0;border-top:1px solid var(--soft)}
.legend div{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--soft)}
.legend b{font-weight:700;color:var(--ink)}
.cmp{grid-column:4/-1;position:relative;aspect-ratio:16/9;overflow:hidden;border:1px solid var(--rule);user-select:none;touch-action:none;cursor:ew-resize;--p:50%;background:#fff}
.cmp svg.art,.cmp img.vec{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#fff}
.cmp .ras{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--p)) 0 0)}
.cmp canvas,.cmp .ras img{width:100%;height:100%;display:block;object-fit:contain;background:#fff}
.cmp canvas{image-rendering:pixelated}
.cmp .bar{position:absolute;top:0;bottom:0;left:var(--p);width:1px;background:var(--red)}
.cmp .knob{position:absolute;top:50%;left:var(--p);transform:translate(-50%,-50%);width:56px;height:56px;background:var(--red);color:#fff;display:grid;place-items:center;transition:width .3s var(--ease),height .3s var(--ease)}
.cmp:hover .knob,.cmp:focus-visible .knob{width:64px;height:64px}
.cmp .tg{position:absolute;bottom:12px;padding:8px 12px;font:700 11px var(--mono);letter-spacing:.08em;text-transform:uppercase;z-index:2}
.cmp .tl{left:12px;background:#111;color:#fff}.cmp .tr{right:12px;background:var(--red);color:#fff}
.cmp .px{position:absolute;top:10px;left:12px;font:500 10px var(--mono);color:#111;opacity:.6}
.cmp .vx{position:absolute;top:10px;right:12px;font:500 10px var(--mono);color:#111;opacity:.6}
/* features */
.feat{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
.fc{position:relative;padding:28px 28px 36px;min-height:280px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}
.fc:before{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleY(0);transform-origin:bottom;transition:transform .55s var(--ease);z-index:0}
.fc:hover:before{transform:scaleY(1)}
.fc>*{position:relative;z-index:1;transition:color .4s}
.fc:hover{color:var(--bg)}.fc:hover p{color:var(--bg);opacity:.75}
.fc-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:auto;color:var(--mute)}
.fc:hover .fc-top{color:var(--red)}
.fc-ic{width:44px;height:44px}
.fc-ic *{fill:none;stroke:currentColor;stroke-width:1.5}
.fc-ic .r{stroke:var(--red)}
.fc h3{font-size:24px;font-weight:800;letter-spacing:-.03em;line-height:1.05;margin:56px 0 12px}
.fc p{font-size:14px;color:var(--mute);line-height:1.55}
/* specs */
.specs{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--rule);margin-top:56px}
.sp{padding:20px 20px 4px 0;border-right:1px solid var(--soft)}
.sp+.sp{padding-left:20px}.sp:last-child{border-right:0}
.sp .v{font:900 clamp(48px,6vw,96px)/.9 var(--sans);letter-spacing:-.06em}
.sp .v small{font-size:.32em;letter-spacing:-.02em;font-weight:700;margin-left:4px;color:var(--red)}
.sp .l{color:var(--mute);margin-top:10px}
/* tools */
.tools{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
a.tool{position:relative;padding:22px 24px 24px;min-height:240px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}
a.tool:before{content:"";position:absolute;inset:0;background:var(--red);clip-path:circle(0 at var(--mx,100%) var(--my,0%));transition:clip-path .6s var(--ease);z-index:0}
a.tool:hover:before,a.tool:focus-visible:before{clip-path:circle(150% at var(--mx,100%) var(--my,0%))}
a.tool>*{position:relative;z-index:1;transition:color .3s}
a.tool:hover,a.tool:focus-visible{color:#fff}a.tool:hover p,a.tool:hover .tn,a.tool:focus-visible p{color:#fff}
.tn{display:flex;justify-content:space-between;color:var(--mute);margin-bottom:auto}
a.tool h3{font-size:22px;font-weight:800;letter-spacing:-.035em;line-height:1.02;margin:48px 0 10px}
a.tool p{font-size:13px;color:var(--mute);line-height:1.5}
.arw{position:absolute!important;right:20px;top:18px;width:28px;height:28px;overflow:hidden}
.arw svg{position:absolute;inset:0;transition:transform .45s var(--ease)}
.arw svg+svg{transform:translate(-120%,120%)}
a.tool:hover .arw svg:first-child{transform:translate(120%,-120%)}a.tool:hover .arw svg+svg{transform:none}
a.tool.inv{background:var(--ink);color:var(--bg)}a.tool.inv p,a.tool.inv .tn{color:var(--bg);opacity:.7}
a.tool.inv h3{color:var(--bg)}
/* how: sticky */
.how{align-items:start}
.how-l{grid-column:1/span 5;position:sticky;top:96px}
.how-l .num{grid-column:auto;display:block;margin-bottom:28px}
.prog{margin-top:40px;border-top:1px solid var(--rule)}
.prog div{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--soft);color:var(--mute);transition:color .3s}
.prog div:after{content:"";width:8px;height:8px;border:1px solid currentColor;transition:background .3s}
.prog div.on{color:var(--ink)}.prog div.on:after{background:var(--red);border-color:var(--red)}
.how-r{grid-column:7/-1;list-style:none;padding:0;border-top:1px solid var(--rule)}
.st{position:relative;min-height:34vh;padding:28px 0 48px;border-bottom:1px solid var(--rule);display:grid;grid-template-columns:120px 1fr;gap:24px;align-content:start}
.st .sn{font:900 96px/.8 var(--sans);letter-spacing:-.07em;color:var(--soft);transition:color .5s,-webkit-text-stroke-color .5s}
.st.on .sn{color:var(--red)}
.st h3{font-size:clamp(28px,3vw,44px);font-weight:900;letter-spacing:-.045em;line-height:.95;margin-bottom:16px}
.st p{color:var(--mute);font-size:16px;max-width:28em}
.st .bar2{grid-column:2;height:2px;background:var(--soft);margin-top:28px;position:relative;overflow:hidden}
.st .bar2:after{content:"";position:absolute;inset:0;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform 1.2s var(--ease)}
.st.on .bar2:after{transform:scaleX(1)}
/* faq */
.faq{grid-column:4/-1;border-top:1px solid var(--rule)}
.qa{border-bottom:1px solid var(--rule)}
.qa h3{font:inherit}
.qa button{width:100%;display:grid;grid-template-columns:56px 1fr 40px;align-items:center;gap:16px;padding:26px 0;text-align:left;font-size:clamp(18px,1.8vw,26px);font-weight:700;letter-spacing:-.03em;line-height:1.2;transition:color .3s,padding .4s var(--ease)}
.qa button:hover{padding-left:12px}
.qa .qn{color:var(--mute);font:500 11px var(--mono);letter-spacing:.06em}
.pm{width:40px;height:40px;border:1px solid var(--rule);position:relative;transition:background .3s,border-color .3s,transform .5s var(--ease)}
.pm:before,.pm:after{content:"";position:absolute;left:50%;top:50%;width:14px;height:1.5px;background:currentColor;transform:translate(-50%,-50%)}
.pm:after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .4s var(--ease)}
.qa.open .pm{background:var(--red);border-color:var(--red);color:#fff;transform:rotate(180deg)}
.qa.open .pm:after{transform:translate(-50%,-50%) rotate(0)}
.qa.open button{color:var(--red)}
.ans{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s var(--ease)}
.qa.open .ans{grid-template-rows:1fr}
.ans>div{overflow:hidden}.ans p{padding:0 56px 28px 72px;color:var(--mute);font-size:16px;max-width:46em}
/* cta */
.cta{background:var(--red);color:#fff;position:relative;overflow:hidden;padding:clamp(80px,10vw,160px) 0 0;z-index:2}
.cta .gl{position:absolute;inset:0;pointer-events:none;opacity:.18}
.cta .gl div{max-width:var(--max);height:100%;margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:repeat(12,1fr);gap:0 24px}
.cta .gl span{border-left:1px solid #fff;border-right:1px solid #fff;opacity:.5}
.cta-m{display:flex;justify-content:space-between;margin-bottom:40px;opacity:.85;position:relative}
.cta h2{position:relative;font-size:clamp(56px,11vw,176px);line-height:.84;letter-spacing:-.06em;font-weight:900}
.cta h2 .thin{font-weight:300}
.cta-row{position:relative;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-top:48px;padding-bottom:56px}
.cta-row p{font-size:18px;max-width:26em}
.mag{display:inline-block;transition:transform .35s var(--ease)}
.cta-word{position:relative;font:900 clamp(80px,21vw,330px)/.74 var(--sans);letter-spacing:-.07em;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.55);white-space:nowrap;margin:0 -0.03em -0.12em;user-select:none}
/* footer */
footer{background:var(--bg)}
.fcols{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;padding:64px 0 48px;border-bottom:1px solid var(--rule)}
.fb{grid-column:1/span 5}.fb p{color:var(--mute);margin-top:16px;max-width:22em;font-size:14px}
.fc2{grid-column:span 2}.fc2:nth-of-type(2){grid-column:7/span 2}
.fcols h4{margin-bottom:16px;color:var(--mute);font-weight:500}
.fcols ul{list-style:none;padding:0;display:grid;gap:8px}
.fcols li a{font-size:14px;font-weight:500;background:linear-gradient(var(--red),var(--red)) 0 100%/0 1px no-repeat;transition:background-size .35s var(--ease)}
.fcols li a:hover{background-size:100% 1px;color:var(--red)}
.fbot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;color:var(--mute)}
/* Featured-on 徽章。营销页只加载本文件，不走应用的 Tailwind，所以用同一套 token，随 data-theme 切换明暗。 */
.featured{display:flex;align-items:center;gap:8px 16px;flex-wrap:wrap;padding:10px 0;border-bottom:1px solid var(--rule)}
.featured-k{margin:0;color:var(--mute)}
.featured-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.featured-list a{display:block;line-height:0;flex:none;max-width:100%}
.featured-list a{opacity:.85;transition:opacity .15s}
.featured-list a:hover,.featured-list a:focus-visible{opacity:1}
/* 统一 32px 高、宽度按比例（与 scripts/featuredBadges.ts 的 FEATURED_BADGE_HEIGHT 一致）。display:block 让 width/height 在图片到达前就占住位置，避免页脚跳动。 */
.featured-list img{display:block;height:32px;width:auto;max-width:100%}
.featured-list .theme-img-dark{display:none}
:is([data-theme=dark],.dark) .featured-list .theme-img-light{display:none}
:is([data-theme=dark],.dark) .featured-list .theme-img-dark{display:block}
/* responsive */
@media(max-width:1100px){.coord{display:none}}
@media(max-width:980px){
.links,.right .desk{display:none}.burger{display:grid}
.mobile{display:block;position:fixed;inset:56px 0 0;background:var(--bg);overflow:auto;z-index:59;clip-path:inset(0 0 100% 0);transition:clip-path .5s var(--ease);visibility:hidden}
.mobile.open{clip-path:inset(0);visibility:visible}
.mobile a{display:flex;justify-content:space-between;padding:18px var(--pad);border-bottom:1px solid var(--soft);font-size:28px;font-weight:800;letter-spacing:-.04em}
.mobile .msub a{font:500 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;padding:12px var(--pad) 12px calc(var(--pad) + 16px);color:var(--mute)}
.mobile select{width:calc(100% - 2*var(--pad));margin:20px var(--pad)}
.hero-l,.drop{grid-column:1/-1}.drop{margin-top:40px;min-height:340px}
.num{grid-column:1/-1;margin-bottom:24px}.sh-t,.sh-d{grid-column:1/-1}.sh-m{display:none}
.cmp-side,.cmp{grid-column:1/-1}.cmp-side{margin-bottom:24px}
.feat{grid-template-columns:repeat(2,1fr)}.tools{grid-template-columns:repeat(2,1fr)}
.specs{grid-template-columns:repeat(2,1fr)}.sp:nth-child(2){border-right:0}.sp:nth-child(3){padding-left:0}.sp:nth-child(n+3){border-top:1px solid var(--soft)}
.how-l{position:static;grid-column:1/-1;margin-bottom:40px}.how-r{grid-column:1/-1}.prog{display:none}.st{min-height:0}
.faq{grid-column:1/-1}
.fb{grid-column:1/-1}.fc2,.fc2:nth-of-type(2){grid-column:span 4}
}
@media(max-width:640px){
.g{gap:0 12px}
.meta span:nth-child(n+3){display:none}
.ghost{display:none}
h1{padding-top:28px;line-height:.9}
.lead{font-size:16px}
.tags{flex-direction:column}
.drop-body{padding:20px;min-height:340px}.bez{height:40%}.plus{width:56px;height:56px}
.cmp{aspect-ratio:4/3}
.feat,.tools{grid-template-columns:1fr}.fc{min-height:0}.fc h3{margin-top:36px}a.tool{min-height:0}a.tool h3{margin-top:36px}
.st{grid-template-columns:1fr;gap:12px}.st .sn{font-size:72px}.st .bar2{grid-column:1}
.qa button{grid-template-columns:32px 1fr 32px;gap:10px}.pm{width:32px;height:32px}.ans p{padding:0 0 24px 42px}
.cta-row{flex-direction:column;align-items:flex-start}
.fc2,.fc2:nth-of-type(2){grid-column:span 6}.fc2:last-of-type{grid-column:1/-1}
.right .btn-r{padding:0 10px;font-size:10px;letter-spacing:.1em}
}

/* ===== polish layer ===== */
:root{--redt:#C80511;--s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:40px;--s6:48px;--s8:64px}
:is([data-theme=dark],.dark){--redt:#FF4D57}
html.theming,html.theming *,html.theming *:before,html.theming *:after{transition:background-color .35s,color .35s,border-color .35s,fill .35s,stroke .35s!important}
::selection{background:var(--red);color:#fff}
html{scrollbar-color:var(--ink) var(--bg);scrollbar-width:thin}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--ink);border:3px solid var(--bg)}::-webkit-scrollbar-thumb:hover{background:var(--red)}
body.lock{overflow:hidden}
p,li{text-wrap:pretty}h2,h3{text-wrap:balance}
.btn{height:40px;padding:0 var(--s2)}
.btn:active{transform:translateY(1px)}.btn:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.btn-r:focus-visible{outline-color:var(--ink)}
.btn[disabled],.btn[aria-disabled=true]{opacity:.38;pointer-events:none;filter:grayscale(1)}
.ib{width:40px;height:40px}.ib:active{transform:scale(.96)}
select.lang{height:40px}select.lang:hover{background-color:var(--alt)}
.links>a.on:after{transform:scaleX(1);transform-origin:left}.links>a.on{color:var(--redt)}
.menu a{outline-offset:-3px}.menu a:focus-visible{background:var(--red);color:#fff;outline:2px solid var(--ink)}.menu a:focus-visible span{color:#fff}
.menu a:active{background:var(--ink);color:var(--bg)}
.qa.open button{color:var(--redt)}.fcols li a:hover{color:var(--redt)}.xh .lab{color:var(--redt)}
.alt-link a:focus-visible{background-size:100% 100%;color:#fff}
.fc:focus-within:before{transform:scaleY(1)}
a.tool:active{transform:translateY(1px)}
.hero-l{gap:var(--s3)}
/* dropzone states */
.drop{display:block}
.drop:focus-visible{outline:2px solid var(--red);outline-offset:4px}
.drop:hover .corner{background:var(--red)}
.drop .corner{transition:background .25s}
.drop[data-state=over]{background:var(--red);color:#fff}
.drop[data-state=over] .sub,.drop[data-state=over] .drop-top,.drop[data-state=over] .sub u{color:#fff;border-color:#fff}
.drop[data-state=over] .plus{background:#fff;color:var(--red);transform:rotate(90deg) scale(1.08)}
.drop[data-state=over] .bez .curve,.drop[data-state=over] .bez .curve.r{stroke:#fff}
.drop[data-state=over] .corner{background:#fff;border-color:#fff}
.drop .st-over,.drop .loading,.drop .errbox,.drop .preview{display:none}
.drop[data-state=over] .st-idle{display:none}.drop[data-state=over] .st-over{display:block}
.drop[data-state=loading] .empty,.drop[data-state=ready] .empty,.drop[data-state=loading] .bez,.drop[data-state=ready] .bez{display:none}
.drop[data-state=loading] .loading{display:flex}
.drop[data-state=ready]{cursor:default}.drop[data-state=ready] .preview{display:flex}
.drop[data-state=error]{border-color:var(--red)}
.drop[data-state=error] .errbox{display:flex}
.drop[data-state=error] .plus{background:var(--ink);color:var(--bg)}
.loading{gap:var(--s3);align-items:flex-end}
.skel{background:linear-gradient(90deg,var(--alt) 0,var(--soft) 50%,var(--alt) 100%) 0 0/200% 100%;animation:sk 1.2s linear infinite}
@keyframes sk{to{background-position:-200% 0}}
.loading .skel.im{width:160px;height:160px}.loading .ls{display:grid;gap:var(--s1);flex:1}.loading .skel.l{height:12px;width:70%}.loading .skel.l+.skel.l{width:45%}
.errbox{align-items:center;gap:var(--s2);margin-bottom:var(--s3);padding:var(--s2);border:1px solid var(--red);background:var(--bg);color:var(--ink)}
.errbox b{flex:none;display:grid;place-items:center;width:32px;height:32px;background:var(--red);color:#fff;font:900 16px var(--sans)}
.errbox p{font-size:14px;line-height:1.4}.errbox p strong{display:block;font-size:15px}
.preview{gap:var(--s3);align-items:flex-end}
.preview img{width:144px;height:144px;object-fit:contain}
.meta2{display:grid;grid-template-columns:auto auto;gap:4px var(--s2);margin:0 0 var(--s2);color:var(--mute)}
.meta2 dt{color:var(--mute)}.meta2 dd{color:var(--ink);font-weight:700}
.preview .fn{font:700 14px var(--mono);margin-bottom:var(--s1);word-break:break-all;max-width:28ch}
.hint{display:flex;gap:var(--s2);flex-wrap:wrap;margin-top:var(--s2);color:var(--mute)}
kbd{font:600 10px var(--mono);border:1px solid currentColor;padding:1px 5px}
/* slider */
.cmp:focus-visible{outline:2px solid var(--red);outline-offset:4px}
.cmp.drag .knob{width:64px;height:64px;background:var(--ink);color:var(--bg)}
.cmp .tg{transition:opacity .25s}.cmp[data-edge=l] .tl,.cmp[data-edge=r] .tr{opacity:0}
.cmp .knob:after{content:attr(data-v);position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);font:600 10px var(--mono);background:var(--ink);color:var(--bg);padding:2px 6px;opacity:0;transition:opacity .2s;white-space:nowrap}
.cmp:focus-visible .knob:after,.cmp.drag .knob:after{opacity:1}
.cmp{touch-action:pan-y}
/* faq anchor */
.qa{scroll-margin-top:80px}.qa button:focus-visible{outline-offset:-2px}
.qa:target button{color:var(--redt)}
.ans{transition:grid-template-rows .45s var(--ease)}
.qa .lk{opacity:0;margin-left:8px;color:var(--mute);font:500 11px var(--mono);transition:opacity .2s}
.qa button:hover .lk,.qa button:focus-visible .lk{opacity:1}
/* totop, mbar, toast */
.totop{position:fixed;right:24px;bottom:24px;z-index:70;width:48px;height:48px;display:grid;place-items:center;background:var(--ink);color:var(--bg);border:1px solid var(--ink);opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .3s,transform .3s var(--ease),background .2s}
.totop.on{opacity:1;transform:none;pointer-events:auto}.totop:hover{background:var(--red);border-color:var(--red);color:#fff}.totop:active{transform:translateY(1px)}
.mbar{display:none}
.toast{position:fixed;left:50%;bottom:24px;z-index:90;transform:translate(-50%,24px);opacity:0;pointer-events:none;display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--ink);color:var(--bg);font:500 13px var(--sans);border-left:4px solid var(--red);transition:opacity .3s,transform .4s var(--ease);max-width:calc(100vw - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}
.tag{position:relative}
.tag[data-tip]:hover:after,.tag[data-tip]:focus-visible:after{content:attr(data-tip);position:absolute;left:0;top:calc(100% + 6px);z-index:5;width:max-content;max-width:240px;padding:8px 10px;background:var(--ink);color:var(--bg);font:500 12px/1.4 var(--sans);letter-spacing:0;text-transform:none}
.tag[tabindex]{cursor:help}
@media(max-width:980px){
 .mobile{overscroll-behavior:contain}
 .mobile a{min-height:56px;align-items:center}.mobile .msub a{min-height:44px}
 .mobile a:active{background:var(--red);color:#fff}
 .ib,select.lang{width:44px;height:44px}select.lang{width:auto}.right .btn{height:44px}
 .drop{margin-top:var(--s5)}
 .sh{margin-bottom:var(--s5)}
 .totop{display:none}
 .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:65;gap:8px;padding:8px var(--pad) calc(8px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--rule);transform:translateY(110%);transition:transform .35s var(--ease)}
 .mbar.on{transform:none}.mbar .btn{flex:1;height:48px;justify-content:center}.mbar .btn-o{flex:none;width:48px;padding:0}
 .toast{bottom:80px}
}
@media(max-width:640px){
 h1{font-size:clamp(40px,12.4vw,64px);line-height:.92;letter-spacing:-.05em;padding-top:var(--s4)}
 .hero-row{padding:var(--s4) 0 var(--s6)}
 .meta{padding:var(--s2) 0}
 .num{font-size:72px}
 h2.t{font-size:clamp(34px,10vw,44px);line-height:.98}
 .drop{min-height:0}.drop-body{min-height:300px;padding:var(--s3) var(--s2)}
 .drop h2{font-size:36px}.drop-top{padding:var(--s1) var(--s2)}
 .preview img,.loading .skel.im{width:96px;height:96px}
 .preview{gap:var(--s2)}.acts .btn{flex:1;justify-content:center;height:44px}
 .acts{width:100%}
 .tags{flex-direction:row}.tag{flex:1 1 auto;justify-content:center;min-height:44px}
 .sp .v{font-size:48px}.specs .sp{padding-right:var(--s2)}
 .sp .l{font-size:10px}
 .st h3{font-size:28px}
 .qa button{font-size:18px;padding:var(--s3) 0}.qa button:hover{padding-left:0}
 .cta h2{font-size:clamp(48px,15vw,72px)}.cta-row .mag,.cta-row .btn-w{width:100%;justify-content:center}
 .cta-m span+span{display:none}
 .right{gap:8px}.right .btn-r{display:none}
 .fcols{padding:var(--s6) 0 var(--s5)}
 .hint .kb{display:none}
 .mq-t span{padding:14px 24px 14px 0}
}
/* fold fix */
.hero h1{font-size:clamp(40px,4.05vw,58px);line-height:.98;letter-spacing:-.04em;padding:0}
.hero .meta{padding:12px 0}
.hero-row{padding:28px 0 40px;align-items:start}
.hero-l{grid-column:1/span 6;gap:20px}
.hero .lead{font-size:17px}
.drop{grid-column:7/-1;min-height:0}
.drop-body{min-height:clamp(340px,46vh,420px);padding:24px}.bez{height:42%}
.ghost{font-size:clamp(140px,22vw,340px)}
@media(max-height:820px) and (min-width:981px){.hero-row{padding-top:24px}}
@media(max-width:980px){.hero-row{display:flex;flex-direction:column;gap:20px}.hero-l{display:contents}.hero h1{order:0;font-size:clamp(32px,6vw,48px)}.drop{order:2;margin-top:4px;width:100%}.hero .lead{order:1}}
@media(max-width:640px){.hero h1{font-size:clamp(32px,10vw,40px);line-height:.95}.hero-row{padding:16px 0 32px;gap:16px}.drop-body{min-height:270px;padding:16px}.drop h2{font-size:30px}.bez{height:24%;top:44px}.drop .hint{display:none}.hero .meta{padding:10px 0}}
@media(prefers-reduced-motion:reduce){.skel{animation:none}.mq-t{animation:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
.js .rv,.js .clip,.js .ln>span{opacity:1!important;transform:none!important;clip-path:none!important}
.bez .curve{stroke-dashoffset:0}.bez .h,.bez .a,.bez .hd{opacity:1}.xh{display:none}}

/* ===== calm layer ===== */
:root{--rule:#d9d9d4;--soft:#e8e8e3;--alt:#f7f7f4;--line:#111}
:is([data-theme=dark],.dark){--rule:#2a2a2a;--soft:#1f1f1f;--alt:#111;--line:#f5f5f2;--bg:#0a0a0a}
.nav{border-bottom-color:var(--rule)}
.links>a,.links>.dd>button{letter-spacing:.06em;font-size:12px;font-weight:600;text-transform:none;letter-spacing:0;font-size:14px;font-weight:500;padding:0 14px}
.links>a:after,.links>.dd>button:after{bottom:12px;left:14px;right:14px}
.links>a.on{color:var(--ink)}
.ib,select.lang{border-color:var(--rule)}.ib:hover{background:var(--alt);color:var(--ink)}
.btn{font-size:13px;letter-spacing:0;text-transform:none;font-weight:600}
.btn:before{display:none}.btn-r{transition:background .2s,border-color .2s}.btn-r:hover{background:#c00510;border-color:#c00510;color:#fff}
.btn-o{border-color:var(--rule)}.btn-o:hover{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-w:hover{background:#f2f2f2;color:#111}
.menu{border-color:var(--rule)}.menu a:hover{background:var(--alt);color:var(--ink)}.menu a:hover span{color:var(--mute)}
.menu a:focus-visible{background:var(--alt);color:var(--ink)}.menu a:focus-visible span{color:var(--mute)}
/* reveal: subtle */
.js .rv{transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.js .clip{clip-path:none}.js .ln>span{transform:none!important;transition:none}
/* hero */
.hero{cursor:auto;border-bottom:1px solid var(--rule)}
.hero-row{padding:56px 0 64px}
@media(max-height:820px) and (min-width:981px){.hero-row{padding:40px 0 48px}}
.hero h1{font-size:clamp(40px,4.05vw,58px);letter-spacing:-.04em;line-height:.98}
.hero .lead{font-size:18px;color:var(--mute)}.lead span{color:var(--mute)}
.hero .lead{max-width:30em}
.tags{border:0;gap:8px;padding:0}.tag{border:1px solid var(--rule);padding:6px 12px;font-size:11px}
.tag i{background:var(--ink);width:4px;height:4px}
.alt-link a{background:none;border-bottom:1px solid var(--rule);padding:0}.alt-link a:hover{background:none;color:var(--ink);border-color:var(--ink)}
/* dropzone */
.drop{border:1px dashed var(--rule);background:var(--alt);transition:border-color .2s,background .2s}
.drop:hover{border-color:var(--ink)}
.bez{opacity:.6;top:24px}.bez .curve:not(.r),.bez .h,.bez .hd,.bez .a{display:none}.bez .curve.r{stroke-width:1.5;stroke-dashoffset:0;animation:none}
.drop h2{font-size:32px;letter-spacing:-.03em;line-height:1.05}
.drop .sub u{border-bottom:1px solid var(--ink)}
.plus{width:56px;height:56px}.drop:hover .plus{transform:none;background:#c00510}
.drop[data-state=over]{background:var(--alt);color:var(--ink);border:1px solid var(--red)}
.drop[data-state=over] .sub,.drop[data-state=over] .sub u{color:var(--mute);border-color:var(--ink)}
.drop[data-state=over] .plus{background:var(--red);color:#fff;transform:scale(1.06)}
.drop[data-state=over] .bez .curve.r{stroke:var(--red)}
.drop[data-state=error]{border:1px solid var(--red)}
.errbox{border-color:var(--rule)}
.hint{margin-top:12px}
/* sections */
.sec{border-bottom:1px solid var(--rule);padding:clamp(72px,8vw,112px) 0}
.sh{margin-bottom:48px}
.sh-t,.sh-d{grid-column:1/span 8}.sh-d{margin-top:16px}
.kick{margin-bottom:16px}.kick:before{width:16px;height:1px;background:var(--ink)}
h2.t{font-size:clamp(32px,3.6vw,48px);line-height:1.05;letter-spacing:-.035em}
/* compare */
.cmp-side{border-top:1px solid var(--rule)}.legend,.legend div{border-color:var(--rule)}
.cmp{border-color:var(--rule)}.cmp .tl{background:var(--ink);color:var(--bg)}.cmp .tr{background:var(--ink);color:var(--bg)}
.cmp .px,.cmp .vx{display:none}
.cmp .knob{width:44px;height:44px}.cmp:hover .knob,.cmp:focus-visible .knob,.cmp.drag .knob{width:48px;height:48px}
.cmp.drag .knob{background:var(--red);color:#fff}
/* features */
.feat,.tools{border-color:var(--rule)}.fc,a.tool{border-color:var(--rule)}
.fc{min-height:0;padding:32px}.fc:before{display:none}.fc:hover{color:var(--ink)}.fc:hover p{color:var(--mute);opacity:1}
.fc-top{margin-bottom:0;color:var(--ink)}.fc:hover .fc-top{color:var(--ink)}.fc-ic{width:32px;height:32px}.fc-ic .r{stroke:currentColor}
.fc h3{font-size:20px;margin:24px 0 8px;letter-spacing:-.02em;line-height:1.2}
.fc p,a.tool p{font-size:15px;line-height:1.55}
.specs{border-color:var(--rule);margin-top:48px}.sp{border-color:var(--rule)}
.sp .v{font-size:clamp(32px,3.2vw,48px);letter-spacing:-.04em}.sp .v small{color:var(--mute)}
/* tools */
a.tool{min-height:0;padding:28px 28px 32px;transition:background .2s}
a.tool:before{display:none}a.tool:hover,a.tool:focus-visible{color:var(--ink);background:var(--alt)}a.tool:hover p,a.tool:focus-visible p{color:var(--mute)}
a.tool h3{font-size:20px;margin:0 32px 8px 0;letter-spacing:-.02em;line-height:1.2}
.arw{top:28px;right:24px;width:20px;height:20px;color:var(--mute)}.arw svg+svg{display:none}
a.tool:hover .arw svg:first-child{transform:translate(3px,-3px)}a.tool:hover .arw{color:var(--red)}
a.tool.inv{background:var(--bg);color:var(--ink)}a.tool.inv p{color:var(--mute);opacity:1}a.tool.inv h3{color:var(--ink)}a.tool.inv:hover{background:var(--alt)}
/* how */
.how-l{top:104px}.prog{border-color:var(--rule)}.prog div{border-color:var(--rule)}
.prog div.on:after{background:var(--ink);border-color:var(--ink)}
.how-r{border-color:var(--rule)}.st{min-height:0;padding:32px 0;border-color:var(--rule);grid-template-columns:64px 1fr}
.st .sn{font:600 13px var(--mono);color:var(--mute);padding-top:8px}.st.on .sn{color:var(--ink)}
.st h3{font-size:24px;letter-spacing:-.02em;line-height:1.2;margin-bottom:8px}.st .bar2{display:none}
/* faq */
.faq{grid-column:1/span 9;border-color:var(--rule)}.qa{border-color:var(--rule)}
.qa button{grid-template-columns:1fr 32px;font-size:20px;font-weight:600;letter-spacing:-.015em;padding:24px 0}
.qa button:hover{padding-left:0;color:var(--ink)}.qa.open button,.qa:target button{color:var(--ink)}
.pm{width:32px;height:32px;border-color:var(--rule)}.qa.open .pm{background:transparent;border-color:var(--ink);color:var(--ink);transform:none}
.ans p{padding:0 48px 24px 0}
/* cta */
.cta{padding:96px 0}
.cta h2{font-size:clamp(36px,4.4vw,56px);line-height:1.02;letter-spacing:-.035em}
.cta-row{margin-top:32px;padding-bottom:0}.cta-row p{font-size:17px;opacity:.9}
.btn-w{height:48px}
.cta .ln{display:inline;overflow:visible;padding:0;margin:0}.cta .ln>span{display:inline}.cta .ln:not(:last-child)>span:after{content:" "}
footer .fcols{border-color:var(--rule)}
@media(max-width:980px){.sh-t,.sh-d,.faq{grid-column:1/-1}.mobile a{font-size:22px;font-weight:700}.mobile a{border-color:var(--rule)}}
@media(max-width:640px){
 .hero h1{font-size:clamp(32px,9.6vw,38px)}
 .hero-row{padding:24px 0 40px}
 .tags{flex-direction:row}.tag{flex:0 0 auto;min-height:36px}
 .drop h2{font-size:28px}.plus{width:48px;height:48px}
 h2.t{font-size:30px}
 .fc,a.tool{padding:24px}
 .st{grid-template-columns:1fr;gap:4px;padding:24px 0}.st .sn{padding:0}
 .qa button{font-size:17px;grid-template-columns:1fr 32px}.ans p{padding:0 0 20px}
 .cta{padding:72px 0}.cta h2{font-size:32px}
 .sp .v{font-size:32px}
}

/* ===== page content that the homepage prototype does not include ===== */
:root { --sans: Inter, "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Noto Sans JP", "Malgun Gothic", sans-serif; }
.hero h1.is-long { font-size: clamp(32px, 3.2vw, 48px); line-height: 1.05; letter-spacing: -.035em; }
.page-head { border-bottom: 1px solid var(--rule); padding: 48px 0 36px; overflow: visible; }
.page-head-row { align-items: start; }
.page-head-copy { grid-column: 1 / span 8; display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.page-head .kick { margin: 0; }
.page-head h1 { padding: 0; font-size: clamp(40px, 4.4vw, 64px); line-height: .96; letter-spacing: -.04em; font-weight: 900; text-wrap: balance; scroll-margin-top: 72px; }
.page-head h1.is-long { font-size: clamp(32px, 3.2vw, 48px); line-height: 1.05; letter-spacing: -.035em; }
.page-head .lead { max-width: 42em; margin: 0; color: var(--mute); font-size: 18px; line-height: 1.5; }
.page-facts { grid-column: 10 / span 3; margin: 0; align-self: stretch; }
.page-facts div { display: grid; gap: 4px; padding: 12px 0; border-top: 1px solid var(--rule); }
.page-facts dt { font: 600 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--mute); }
.page-facts dd { margin: 0; font-weight: 600; letter-spacing: -.02em; }
.sec.doc { padding-top: clamp(48px, 6vw, 80px); }
.doc-grid { align-items: start; }
.doc-main { grid-column: 1 / span 8; min-width: 0; }
.doc-main :is(p, li, h2, h3, blockquote) { max-width: 68ch; }
.doc-side { grid-column: 10 / span 3; position: sticky; top: 72px; align-self: start; display: grid; gap: 28px; min-width: 0; }
.toc .kick { margin-bottom: 8px; }
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; }
.toc a { display: block; padding: 10px 0; border-bottom: 1px solid var(--rule); font-size: 14px; line-height: 1.35; }
.toc a:hover { color: var(--red); }
.doc-note { display: grid; gap: 10px; padding-top: 4px; border-top: 1px solid var(--rule); }
.doc-note p { margin: 0; font-size: 14px; line-height: 1.5; color: var(--mute); }
.doc-note .mono { color: var(--ink); }
.doc-note .btn { justify-self: start; white-space: normal; height: auto; min-height: 34px; padding: 8px 14px; text-align: left; }
.doc-main h2, .doc-main h3 { scroll-margin-top: 72px; }
.prose h2, .doc-main h2 { font-size: clamp(28px, 2.6vw, 36px); letter-spacing: -.03em; line-height: 1.15; margin: 1.4em 0 .45em; font-weight: 700; }
.prose h2:first-child, .doc-main h2:first-child { margin-top: 0; }
.prose h3, .doc-main h3 { font-size: 20px; letter-spacing: -.02em; margin: 1.2em 0 .4em; font-weight: 600; }
.prose p, .prose li { font-size: 17px; line-height: 1.65; }
.prose p { margin: 0 0 1em; }
.prose ul, .prose ol { margin: 0 0 1em 1.2em; display: grid; gap: 8px; }
.prose a { border-bottom: 1px solid var(--rule); }
.prose a:hover { border-bottom-color: var(--red); color: var(--red); }
.prose code { font-family: var(--mono); font-size: .88em; padding: 1px 5px; background: var(--alt); border: 1px solid var(--rule); }
.prose table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; font-size: 14px; }
.prose caption, .doc-main caption { caption-side: top; text-align: left; padding: 0 0 12px; color: var(--mute); font-size: 14px; }
.table-scroll { overflow-x: auto; max-width: 100%; }
.prose th, .prose td { border-bottom: 1px solid var(--rule); padding: 12px 10px; text-align: left; vertical-align: top; }
.prose th { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; font-weight: 700; background: var(--alt); }
.prose-wrap { overflow-x: auto; }
.media-sec img, .prose img, img.hero-shot, img.compare-shot { width: 100%; height: auto; border: 1px solid var(--rule); background: var(--alt); }
.theme-img-dark { display: none; }
:is([data-theme=dark], .dark) .theme-img-light { display: none; }
:is([data-theme=dark], .dark) .theme-img-dark { display: block; }
.contact-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 32px; align-items: start; }
.contact-intro h2 { font-size: clamp(28px, 2.6vw, 36px); letter-spacing: -.03em; line-height: 1.15; font-weight: 700; margin: 0 0 12px; }
.contact-intro ul { display: grid; gap: 8px; margin-top: 12px; padding-left: 18px; color: var(--mute); }
.contact-form { display: grid; gap: 16px; }
.contact-form-panel { padding: 28px; background: var(--bg); border: 1px solid var(--rule); }
.contact-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-field { display: grid; gap: 6px; }
.contact-field label { font: 600 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.contact-field input, .contact-field textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--rule); border-radius: 0; background: var(--bg); color: var(--ink); font: inherit; }
.contact-field textarea { min-height: 150px; resize: vertical; }
.contact-field input:focus, .contact-field textarea:focus { outline: 2px solid var(--red); outline-offset: 1px; }
.contact-honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.contact-submit { justify-self: start; padding: 0 18px; height: 44px; border: 1px solid var(--red); background: var(--red); color: #fff; font: 600 14px var(--sans); cursor: pointer; }
.contact-submit:hover:not(:disabled) { background: #c00510; }
.contact-submit:disabled { opacity: .65; cursor: default; }
.contact-status { padding: 10px 12px; border: 1px solid transparent; font-size: 14px; }
.contact-status:empty { display: none; }
.contact-status[data-state="success"] { border-color: #17663a; background: var(--alt); }
.contact-status[data-state="error"] { border-color: var(--red); background: var(--alt); }
.drop[data-clarity-mask="true"] .preview img { filter: none; }
@media (max-width: 980px) {
  .page-head { padding: 28px 0 24px; }
  .page-head-copy, .page-facts, .doc-main, .doc-side { grid-column: 1 / -1; }
  .page-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 16px; }
  .doc-side { position: static; }
  .hero-solo .hero-l { display: contents; }
  .contact-layout, .contact-form-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .page-head h1, .page-head h1.is-long { font-size: clamp(32px, 9vw, 40px); }
  .page-facts { grid-template-columns: 1fr; }
  .doc-main h2, .prose h2 { font-size: 26px; }
  .contact-form-panel { padding: 16px; }
}

/* ===== 对齐：同一内容边，实例对比叠成一块 ===== */
.hero-row{align-items:stretch}
.hero-l{justify-content:space-between;min-width:0}
.drop{display:flex;flex-direction:column;height:auto}
.drop-body{flex:1}
.faq{grid-column:1/-1}
.qa button{align-items:center}
.qa button>span:first-child{min-width:0}
.ans p{padding:0 56px 20px 0}
.how-l{grid-column:1/span 5}
.how-r{grid-column:6/-1}
.st{align-items:baseline;grid-template-columns:2.75rem minmax(0,1fr);column-gap:16px}
.st .sn{padding-top:0;line-height:1}
.fc h3,a.tool h3{min-height:2.4em}
.specs .sp,.specs .sp+.sp{padding:24px 24px 20px;display:flex;flex-direction:column;min-width:0}
.specs .sp .v{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.specs .sp .v small{margin-left:0}
.specs .sp .l{margin-top:12px;min-height:2.6em;line-height:1.35;text-wrap:balance}
.fcols{grid-template-columns:minmax(0,1.45fr) repeat(3,minmax(0,1fr));column-gap:40px;align-items:start}
.fb,.fc2,.fc2:nth-of-type(2){grid-column:auto;min-width:0}
.fb .logo,.fcols h4{min-height:20px;display:flex;align-items:center}
.page-facts{align-self:end}
.prose th:first-child,.prose td:first-child{padding-left:0}
.prose th:last-child,.prose td:last-child{padding-right:0}
.cmp-g{align-items:start}
.cmp-g .cmp-side{grid-column:1/span 3;justify-content:flex-start;align-self:start;gap:28px}
.cmp-side p{color:var(--mute)}
.cmp-g .cmp-frame{grid-column:4/-1}
.cmp-frame{border:1px solid var(--rule);background:var(--bg)}
.exs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-bottom:1px solid var(--rule)}
.exs-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.ex{display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 16px;border-right:1px solid var(--rule);text-align:left;font:600 15px var(--sans);letter-spacing:-.015em;color:var(--ink);background:transparent}
.ex:last-child{border-right:0}
.ex .xk{color:var(--mute);min-width:1.75em}
.ex.on{background:var(--ink);color:var(--bg)}
.ex.on .xk{color:var(--bg);opacity:.7}
.ex:hover:not(.on){background:var(--alt)}
.ex:focus-visible{outline:2px solid var(--red);outline-offset:-2px}
.cmp-frame .cmp{border:0;width:100%;grid-column:auto}
.legend-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--rule)}
.legend-row div{display:flex;justify-content:flex-start;align-items:baseline;gap:12px;margin:0;padding:12px 16px;border-right:1px solid var(--rule);border-bottom:0}
.legend-row div:last-child{border-right:0}
@media(max-width:980px){
.how-l,.how-r,.faq,.cmp-g .cmp-side,.cmp-g .cmp-frame{grid-column:1/-1}
.fcols{grid-template-columns:1fr 1fr}
.fb{grid-column:1/-1}
.fc2,.fc2:nth-of-type(2){grid-column:auto}
.specs .sp,.specs .sp+.sp{padding:20px 16px}
.page-facts{align-self:stretch}
.hero-l{justify-content:flex-start}
}
@media(max-width:640px){
.st{grid-template-columns:1fr;gap:4px}
.fc2:last-of-type{grid-column:1/-1}
.ex{min-height:52px;padding:10px 8px;font-size:13px;gap:8px}
.exs-4{grid-template-columns:1fr 1fr}
.exs-4 .ex:nth-child(2){border-right:0}
.legend-row{grid-template-columns:1fr}
.legend-row div{border-right:0;border-bottom:1px solid var(--rule)}
.legend-row div:last-child{border-bottom:0}
}

.ex-more{margin:0}
.ex-more a{border-bottom:1px solid var(--rule)}
.ex-more a:after{content:" \2192"}
.ex-more a:hover{border-bottom-color:var(--red);color:var(--red)}
.ex-page{padding:48px 0 72px}
.ex-page h1{font-size:clamp(40px,5vw,68px);letter-spacing:-.045em;line-height:.96;font-weight:900;margin:0 0 16px}
.ex-lead{max-width:62ch;color:var(--mute);font-size:18px}
.ex-list{display:grid;gap:0;margin-top:48px}
.ex-tested{margin-top:48px;max-width:68ch}
.ex-tested h2{font-size:18px;font-weight:700;letter-spacing:-.02em;margin:0 0 8px}
.sample-note{margin:16px 0 0;color:var(--mute);font-size:14px;line-height:1.5}
.home-compare{align-items:stretch}
.home-compare .cmp-side{grid-column:1/span 4;align-self:stretch;justify-content:flex-start;gap:16px;border-top:0;padding-top:0;min-width:0}
.home-compare .cmp-frame{grid-column:5/-1;align-self:start}
.cmp-intro{margin:0;color:var(--mute);font-size:14px;line-height:1.5}
.home-compare .size-note{margin:0;padding:0;color:var(--mute);font-size:13px;line-height:1.5}
.home-compare .ex-more{margin-top:auto;padding-top:16px;border-top:1px solid var(--rule)}
.home-compare .ex-more,.home-compare .ex-more a{color:var(--ink)}
.ex-page .w > .size-note{margin:16px 0 0;max-width:62ch;color:var(--mute);font-size:14px;line-height:1.5}
.ex-card{border-top:1px solid var(--rule);padding:48px 0 0}
.ex-card .cmp-g{row-gap:12px;align-items:start}
.ex-card h2,.ex-card .use,.ex-card .ex-panel,.ex-card .setting-tags,.ex-card .tip{grid-column:1/span 4;min-width:0}
.ex-card h2{grid-row:1;margin:0;font-size:24px;letter-spacing:-.03em;font-weight:800;line-height:1.15}
.ex-card .use{grid-row:2}
.ex-card .cmp-frame{grid-column:5/-1;grid-row:1/span 5;align-self:stretch;display:flex;flex-direction:column;min-width:0}
.ex-card .cmp-frame .cmp{flex:1 1 auto;width:100%;min-height:0;height:auto;aspect-ratio:auto}
.ex-card .ex-panel{grid-row:3}
.ex-card .setting-tags{grid-row:4}
.ex-card .tip{grid-row:5}
.ex-card .use,.ex-card .tip{margin:0;font-size:14px;line-height:1.5;color:var(--mute)}
.ex-card .use strong{color:var(--ink);font-weight:700}
.size-viz{display:grid;gap:16px;min-width:0;position:relative;container-type:inline-size}
.size-chart{display:grid;gap:16px;min-width:0}
.size-badge{display:block;margin:0;padding:0;background:none;color:var(--red);font:800 40px/1 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:-.045em;white-space:nowrap}
.size-badge.is-up,.size-badge.is-flat{background:none;color:var(--ink);box-shadow:none}
.size-row{display:grid;gap:8px;min-width:0}
.size-meta{display:flex;justify-content:space-between;align-items:baseline;gap:8px;min-width:0;font-size:12px;line-height:16px}
.size-k{color:var(--mute);min-width:0;overflow-wrap:anywhere}
.size-kb{margin-left:auto;color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.size-track{display:block;height:8px;background:var(--alt);box-shadow:inset 0 0 0 1px var(--rule);min-width:0}
.size-bar{display:block;height:100%;background:var(--ink);transition:width .35s var(--ease)}
.size-bar.is-svg{background:var(--red)}
.size-bar.is-gz{position:static;background:#e98b90}
:is([data-theme=dark],.dark) .size-bar.is-gz{background:#a33a40}
.size-bar.is-gz,:is([data-theme=dark],.dark) .size-bar.is-gz{background:color-mix(in srgb, var(--red) 72%, var(--bg))}
.stat-chips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:0;padding:0;list-style:none;min-width:0}
.stat-chips li{display:flex;align-items:center;gap:4px;height:28px;max-width:100%;min-width:0;padding:0 4px;border:1px solid var(--rule);color:var(--ink);font-size:11px;line-height:1}
.stat-chips b{font-weight:700;font-variant-numeric:tabular-nums}
.stat-chips span{min-width:0;color:var(--mute);font-size:10px;line-height:1;white-space:nowrap;overflow-wrap:normal}
.chip-ic{flex:none;display:block;width:12px;height:12px}
@container (max-width:370px){
.stat-chips{display:flex;flex-wrap:wrap}
.stat-chips li{flex:1 1 auto;width:auto}
}
.setting-tags{min-width:0}
.setting-k{margin:0 0 6px;color:var(--mute);font-size:12px;font-weight:700;line-height:16px}
.setting-tags ul{display:flex;flex-wrap:wrap;gap:4px;margin:0;padding:0;list-style:none}
.setting-tags li{display:inline-flex;align-items:baseline;gap:4px;max-width:100%;min-height:22px;padding:2px 6px;background:var(--alt);color:var(--mute);font:500 10px/14px var(--mono);letter-spacing:.02em}
.setting-tags b{color:var(--ink);font-weight:600}
.cmp .tl,.cmp .tr{bottom:12px}
.cmp .tl{left:12px}
.cmp .tr{right:12px}
@media (prefers-reduced-motion: reduce){.size-bar{transition:none}}
@media(max-width:980px){
.home-compare,.ex-card .cmp-g{display:flex;flex-direction:column;align-items:stretch;gap:16px}
.home-compare .cmp-frame{order:1;width:100%}
.home-compare .cmp-side{order:2;width:100%}
.home-compare .ex-more{margin-top:0}
.ex-card h2{order:1}
.ex-card .use{order:2}
.ex-card .cmp-frame{order:3;width:100%}
.ex-card .ex-panel{order:4}
.ex-card .setting-tags{order:5}
.ex-card .tip{order:6}
.ex-card .cmp-frame{display:block;height:auto}
.ex-card .cmp-frame .cmp{flex:none;height:auto;aspect-ratio:16/9}
}
@media(max-width:640px){
.ex-page{padding-top:32px}
.ex-page h1{font-size:clamp(32px,10vw,40px)}
.ex-card{padding-top:32px}
.ex-card h2{font-size:22px}
.size-badge{font-size:36px}
.ex-card .cmp-frame .cmp{aspect-ratio:4/3}
}

/* 投放区：风场流线。图形绝对定位，文案留在底部，高度仍由首屏左栏撑开。 */
.drop .mark{display:block;width:100%;height:auto;aspect-ratio:500/248;margin:0 0 24px;color:#141414;pointer-events:none;overflow:visible}
.drop .drop-body{justify-content:flex-end;align-items:stretch}
.drop .empty{display:flex;flex-direction:column;align-items:stretch;gap:8px;width:100%;min-width:0}
.drop .drop-cta{flex-wrap:nowrap;align-items:flex-end;justify-content:space-between;gap:16px;width:100%}
.drop h2{margin:0;font-size:28px;font-weight:800;letter-spacing:-.03em;line-height:1.05;white-space:nowrap}
.drop .empty .sub,.drop .empty .hint{margin:0;padding-right:64px}
.drop .hint{display:flex;gap:16px}
/* + 贴投放区内边距的右下角，不跟标题对齐；说明和快捷键让出方块宽度加 16px。 */
.drop .plus{position:absolute;right:24px;bottom:24px;z-index:3;width:48px;height:48px}
.drop .plus svg{width:20px;height:20px}
.drop[data-state=loading] .mark,.drop[data-state=ready] .mark,.drop.has .mark{display:none}
.drop[data-state=over] .mark{color:var(--red)}
.drop[data-state=over] .mark .v,.drop[data-state=over] .mark .n{stroke:var(--red)}
.drop[data-state=over] .mark .dim{stroke:#d98a8e}
.drop[data-state=over] .mark .hd{fill:#d98a8e}
.drop[data-state=over] .mark .guide{stroke:#e3b4b6}
.mark pattern path{stroke:var(--alt)}
:is([data-theme=dark],.dark) .mark{color:#f3f3ee}
:is([data-theme=dark],.dark) .mark .a{fill:#f3f3ee}
:is([data-theme=dark],.dark) .mark .b{fill:#9a9a96}
:is([data-theme=dark],.dark) .mark .c{fill:#c4a3a4}
:is([data-theme=dark],.dark) .mark .n{fill:#111}
:is([data-theme=dark],.dark) .mark .guide{stroke:#3a3a36}
:is([data-theme=dark],.dark) .mark .px{stroke:#f3f3ee}
@media(max-width:980px){
.drop .drop-body{min-height:0}
}
@media(max-width:640px){
.drop .drop-body{padding:16px;min-height:0}
.drop .mark{width:100%;margin-bottom:16px}
.drop h2{font-size:22px}
.drop .plus{right:16px;bottom:16px;width:40px;height:40px}
.drop .empty .sub,.drop .empty .hint{padding-right:56px}
.drop .hint{display:flex}
.drop .hint .kb{display:inline}
.mark .alt{display:none}
}
@media(prefers-reduced-motion:reduce){
.drop .plus,.drop:hover .plus,.drop[data-state=over] .plus{transition:none}
}
/* P1：Why 改成非对称 bento（首卡 4/6、次卡 2/6、其余各 2/6，六张正好两行），
   避免与紧随其后的 Tools 等宽卡片墙形成连续重复的版式家族。 */
.feat{grid-template-columns:repeat(6,1fr)}
.feat .fc{grid-column:span 2}
.feat .fc:nth-child(1){grid-column:span 4}
.feat .fc:nth-child(2){grid-column:span 2}
.feat .fc:nth-child(6){grid-column:span 6}
@media(max-width:980px){
.feat{grid-template-columns:repeat(2,1fr)}
.feat .fc,.feat .fc:nth-child(1),.feat .fc:nth-child(2),.feat .fc:nth-child(6){grid-column:span 1}
}
@media(max-width:640px){.feat{grid-template-columns:1fr}}

/* P1：步骤去掉 01/02/03 编号后，条目由「编号 + 内容」两列改为单列。 */
.st{grid-template-columns:1fr}
.st .bar2{grid-column:1}
/* 导航居中；语言切换改成与主题按钮同尺寸的 44×44 方块（原生 select 透明覆盖，键盘/触屏照常可用）。 */
.nav .w{position:relative}
.nav .links{position:absolute;left:50%;top:0;height:100%;transform:translateX(-50%)}
@media(max-width:980px){.nav .links{position:static;transform:none}}
.langwrap{position:relative;display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--rule);background:var(--bg);transition:background .2s}
.langwrap:hover,.langwrap:focus-within{background:var(--alt)}
.langwrap .langcode{font:600 11px/1 var(--mono);letter-spacing:.06em;color:var(--ink);pointer-events:none}
.langwrap select.lang{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;background:none;opacity:0;appearance:none;cursor:pointer;font-size:11px}
.nav .ib{width:44px;height:44px}
/* 语言下拉：站内风格的自定义菜单（替代原生 select） */
.langdd{position:relative}
.langbtn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--rule);background:var(--bg);color:var(--ink);cursor:pointer;transition:background .2s,color .2s}
.langbtn:hover,.langdd.open .langbtn{background:var(--ink);color:var(--bg)}
.langbtn .langcode{font:600 11px/1 var(--mono);letter-spacing:.06em}


.langmenu{left:0;right:auto;width:128px;grid-template-columns:1fr;z-index:70;background:var(--bg);box-shadow:0 18px 40px -24px rgb(0 0 0 / .35)}
.langmenu a{padding:11px 14px;border-right:0;font:500 13px var(--sans);letter-spacing:0;text-transform:none}
.langmenu a[aria-current="true"]{color:var(--red)}
.langdd.open .langmenu{clip-path:inset(0 0 0 0);visibility:visible}
.mobile .langlist{display:flex;flex-wrap:wrap;gap:8px;padding:16px var(--pad)}
.mobile .langlist a{display:inline-flex;padding:8px 12px;border:1px solid var(--rule);font:500 12px/1 var(--mono);letter-spacing:.04em}
.mobile .langlist a[aria-current="true"]{border-color:var(--red);color:var(--red)}


/* 移动端用菜单里的语言列表，隐藏桌面语言下拉 */
@media(max-width:980px){.langmenu{left:auto;right:0}}

/* 移动端菜单：分组标题 + 两列工具网格 + 轻量主链接 */
@media(max-width:980px){
.mobile .mhead{display:flex;align-items:center;justify-content:space-between;width:100%;padding:16px var(--pad);border:0;border-bottom:1px solid var(--soft);background:var(--bg);font:600 19px/1.2 var(--sans);letter-spacing:-.015em;text-transform:none;color:var(--ink);cursor:pointer}
.mobile .mhead svg{transition:transform .3s var(--ease)}
.mobile .mhead[aria-expanded="true"] svg{transform:rotate(180deg)}

.mobile .msub{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--soft)}
.mobile .msub a{display:flex;align-items:center;min-height:52px;padding:10px 12px;background:var(--bg);font:500 13px/1.3 var(--sans);letter-spacing:0;text-transform:none;color:var(--ink);border-bottom:1px solid var(--soft)}
.mobile .msub a:nth-child(odd){border-right:1px solid var(--soft)}
.mobile .msub a:hover,.mobile .msub a:active{background:var(--alt)}
.mobile .mrow{display:flex;align-items:center;justify-content:space-between;padding:16px var(--pad);border-bottom:1px solid var(--soft);font:600 19px/1.2 var(--sans);letter-spacing:-.015em}
.mobile .mrow:active{background:var(--alt)}
.mobile .langlist{padding:20px var(--pad) 32px}
.mobile .langlist a{min-height:40px;align-items:center}
.mobile a:focus-visible,.mobile .mhead:focus-visible{outline:none;background:var(--alt);box-shadow:inset 3px 0 0 var(--red)}
}

/* 二级菜单默认收起 */
@media(max-width:980px){
.mobile .msub:not(.open){display:none}
}

/* 信任标签回到首屏左栏底部 */
.hero .tags{margin:16px 0 0}
@media(max-width:980px){.hero .tags{order:2}.drop{order:3}}

/* 社交证明行（主流 SaaS 样式） */
.hero-proof{display:flex;align-items:center;gap:8px;margin:14px 0 0;font:500 13px/1.4 var(--sans);color:var(--mute)}
.hero-proof b{color:var(--ink);font-weight:700}
.hp-dot{width:6px;height:6px;background:var(--red);flex:none}
@media(max-width:640px){.hero-proof{font-size:12px}}

/* 首屏左栏：标题置顶，文案组贴底 */
.hero-l{gap:0;justify-content:flex-start}
.hero-l>.lead{margin-top:auto}
.hero-proof{margin:10px 0 0}
.hero .tags{margin:18px 0 0}
@media(max-width:980px){.hero-l{gap:0}}

/* 移动端：社交证明紧跟 lead 之后 */
@media(max-width:980px){.hero-proof{order:1}.hero .tags{order:2}}

/* 信任标签图标 */
.tag .tag-ic{flex:none;opacity:.8}

/* 已登录顶栏：桌面槽位固定 11rem，邮箱过长省略，语言/主题按钮不再横跳。
   html.auth-known 在首帧就占上这个宽度（localStorage 提示）。未登录且无提示时仍是「登录」原文宽度。 */
.auth-ico{display:none;flex:none}
html.auth-known .right a[data-auth-slot="header"].desk,
.right a.btn.auth-on.desk{
  width:11rem;min-width:11rem;max-width:11rem;
  text-transform:none;letter-spacing:0;font-weight:500;justify-content:flex-start
}
html.auth-known .right a[data-auth-slot="header"].desk [data-auth-label],
.right a.btn.auth-on.desk [data-auth-label]{overflow:hidden;text-overflow:ellipsis;min-width:0}
html.auth-pending [data-auth-slot="header"] [data-auth-label]{visibility:hidden}
@media(max-width:980px){
  html.auth-known .right a[data-auth-slot="header"].desk,
  .right a.btn.auth-on.desk{
    display:inline-flex;width:44px;min-width:44px;max-width:44px;height:44px;padding:0;justify-content:center;gap:0
  }
  html.auth-known .right a[data-auth-slot="header"].desk [data-auth-label],
  .right a.btn.auth-on.desk [data-auth-label]{display:none}
  html.auth-known .right a[data-auth-slot="header"].desk .auth-ico,
  .right a.btn.auth-on.desk .auth-ico{display:block}
}

/* 顶栏主题 / 语言 / 登录（及已登录账号槽）共用语言按钮的尺寸、字体和状态。红色 Open Converter 不动。 */
.nav .right > #theme,
.nav .right .langbtn,
.nav .right a[data-auth-slot="header"].desk{
  height:44px;
  border:1px solid var(--rule);
  border-radius:0;
  background:var(--bg);
  color:var(--ink);
  font:600 11px/1 var(--mono);
  letter-spacing:.06em;
  text-transform:none;
  padding:0;
  transition:background .2s,color .2s;
}
.nav .right > #theme,
.nav .right .langbtn{width:44px}
.nav .right a[data-auth-slot="header"].desk{width:auto;min-width:44px;padding:0 14px;gap:8px}
html.auth-known .nav .right a[data-auth-slot="header"].desk,
.nav .right a.btn.auth-on.desk{
  width:11rem;min-width:11rem;max-width:11rem;
  padding:0 14px;
  justify-content:flex-start;
  letter-spacing:.06em;
  font-weight:600;
  text-transform:none;
}
.nav .right > #theme:hover,
.nav .right .langbtn:hover,
.nav .right .langdd.open .langbtn,
.nav .right a[data-auth-slot="header"].desk:hover,
.nav .right > #theme:active,
.nav .right .langbtn:active,
.nav .right a[data-auth-slot="header"].desk:active{
  background:var(--ink);
  color:var(--bg);
  transform:none;
}
.nav .right > #theme:focus-visible,
.nav .right .langbtn:focus-visible,
.nav .right a[data-auth-slot="header"].desk:focus-visible{
  outline:2px solid var(--red);
  outline-offset:3px;
}
@media(max-width:980px){
  html.auth-known .nav .right a[data-auth-slot="header"].desk,
  .nav .right a.btn.auth-on.desk{
    width:44px;min-width:44px;max-width:44px;height:44px;padding:0;justify-content:center;gap:0
  }
}