:root{--g:#107c41;--g2:#1e7d4f;--gd:#0c5a30;--mint:#d7f5e4;--mint2:#b9ecd0;--yel:#ffc93c;--yel-l:#fff3cc;--coral:#ff7a59;--cream:#fbfaf3;--ink:#17261d;--mute:#56645b}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"Nunito",system-ui,sans-serif;font-size:17px;line-height:1.65;color:var(--ink);background:var(--cream);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
code,pre,.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
/* header */
.hd{background:#fff;position:sticky;top:0;z-index:20;box-shadow:0 2px 0 rgba(16,124,65,.08)}
.hd .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px;text-decoration:none;color:var(--gd);min-height:44px}
.logo b{color:var(--g);font-weight:700}
.seal{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--g);color:#fff;font-family:"JetBrains Mono",monospace;font-weight:700;font-size:17px;font-style:italic;box-shadow:0 3px 0 var(--yel)}
.gnav{margin-left:auto;display:flex;gap:4px}
.gnav a{padding:10px 14px;min-height:44px;display:flex;align-items:center;text-decoration:none;font-weight:800;border-radius:999px;font-size:16px}
.gnav a:hover{background:var(--mint)}
.menu-btn{display:none;margin-left:auto;width:44px;height:44px;border:0;background:var(--mint);border-radius:12px}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:20px;height:2px;background:var(--g);margin:auto;position:relative;content:""}
.menu-btn span::before{position:absolute;top:-6px}.menu-btn span::after{position:absolute;top:6px}
/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#e3f8ec 0%,#f4fbe9 50%,#fff3cf 100%);padding:36px 0 52px}
.blob{position:absolute;border-radius:50%;pointer-events:none}
.b1{width:540px;height:540px;right:-130px;top:-150px;background:var(--g);opacity:.95;border-radius:46% 54% 60% 40%/50% 45% 55% 50%}
.b2{width:260px;height:260px;right:400px;bottom:-130px;background:var(--yel);opacity:.85}
.b3{width:150px;height:150px;left:-56px;top:240px;background:var(--mint2);opacity:.9}
.hero-in{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:44px;align-items:center}
.eyebrow{display:flex;gap:8px;margin:0 0 10px;flex-wrap:wrap}
.eyebrow span{background:#fff;color:var(--g);font-weight:800;font-size:14px;padding:3px 12px;border-radius:999px;box-shadow:0 2px 0 rgba(16,124,65,.15)}
h1{font-size:50px;line-height:1.12;margin:0 0 10px;font-weight:900;color:var(--gd);letter-spacing:-.01em}
h1 em{font-style:normal;background:linear-gradient(transparent 60%,var(--yel) 60%);padding:0 4px;font-family:"JetBrains Mono",monospace;font-size:.86em;font-weight:700;color:var(--g)}
.lead{margin:0 0 18px;font-size:18px;color:var(--mute);font-weight:600}
.tool{background:#fff;border-radius:24px;padding:20px;box-shadow:0 18px 40px rgba(16,124,65,.18),0 4px 0 var(--g);position:relative;z-index:2}
.tl{display:block;font-weight:800;color:var(--gd);font-size:16px;margin-bottom:6px}
textarea{display:block;width:100%;font:inherit;font-size:17px;line-height:1.5;border:2px solid #dfe9e2;border-radius:14px;padding:12px 14px;background:#fbfdfb;resize:vertical;min-height:92px;color:var(--ink)}
textarea:focus,.f input:focus{outline:none;border-color:var(--g);background:#fff;box-shadow:0 0 0 4px var(--mint)}
.seg{display:grid;grid-template-columns:1fr 1fr;background:var(--mint);border-radius:14px;padding:4px;margin:12px 0}
.seg-b{min-height:44px;border:0;background:transparent;border-radius:11px;font:inherit;font-weight:800;font-size:16px;color:var(--g);cursor:pointer}
.seg-b.on{background:var(--g);color:#fff;box-shadow:0 3px 8px rgba(16,124,65,.3)}
.opt summary{min-height:44px;display:flex;align-items:center;gap:8px;font-weight:800;color:var(--g2);cursor:pointer;list-style:none;font-size:16px}
.opt summary::-webkit-details-marker{display:none}
.opt summary::before{content:"+";display:grid;place-items:center;width:22px;height:22px;border-radius:6px;background:var(--yel-l);color:#9a6b00;font-weight:900}
.opt[open] summary::before{content:"–"}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.f{display:flex;flex-direction:column;gap:2px;min-width:0}
.fl{font-size:14px;font-weight:800;color:var(--mute)}
.f input{font-family:"JetBrains Mono",monospace;font-size:16px;min-height:44px;height:44px;border:2px solid #dfe9e2;border-radius:12px;padding:0 12px;background:#fbfdfb;width:100%;min-width:0;color:var(--ink)}
.btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;margin-top:14px;min-height:56px;border:0;border-radius:16px;background:var(--g);color:#fff;font:inherit;font-weight:900;font-size:19px;cursor:pointer;box-shadow:0 4px 0 var(--gd)}
.btn:hover{transform:translateY(-1px);background:#0f8a48}
.arw{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--yel);color:var(--gd);font-size:16px}
.hero-art{position:relative}
.art-frame{border-radius:32px;overflow:hidden;aspect-ratio:4/5;box-shadow:0 24px 50px rgba(23,38,29,.25);border:6px solid #fff;transform:rotate(1.5deg);background:var(--mint)}
.art-frame img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;background:#fff;border-radius:16px;padding:8px 16px;font-weight:800;box-shadow:0 8px 20px rgba(23,38,29,.18);font-size:16px}
.badge b{color:var(--g);font-size:24px;margin-right:2px}
.bd1{left:-28px;top:40px;transform:rotate(-4deg)}
.bd2{right:-10px;bottom:36px;background:var(--yel);color:var(--ink)}
/* ads */
.ad{position:relative;margin:28px auto;background:repeating-linear-gradient(45deg,#eef1ea,#eef1ea 10px,#e6eae1 10px,#e6eae1 20px);border:1px dashed #c3cbbf;border-radius:8px;flex:none}
.ad span{position:absolute;top:4px;left:8px;font-size:12px;color:#7d8778;letter-spacing:.04em}
.ad-728{width:728px;height:90px}
.ad-336{width:336px;height:280px}
.ad-300{display:none;width:300px;height:250px}
/* sections */
.sec{padding:64px 0}
.sec-h{text-align:center;margin-bottom:32px}
.kicker{margin:0;font-weight:900;color:var(--g);letter-spacing:.18em;font-size:16px}
h2{font-size:34px;margin:4px 0;color:var(--gd);font-weight:900;line-height:1.25}
.sub{margin:0;color:var(--mute)}
/* result */
.result-sec{background:#fff}
.result{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:32px;align-items:start}
.res-main{min-width:0}
.code-card{background:#13261b;border-radius:20px;overflow:hidden;box-shadow:0 14px 30px rgba(16,124,65,.22),0 4px 0 var(--yel)}
.code-top{display:flex;align-items:center;gap:12px;padding:8px 10px 8px 16px;background:#1b3527}
.dots{display:flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:#ff7a59}.dots i:nth-child(2){background:var(--yel)}.dots i:nth-child(3){background:#4ed38a}
.code-app{color:#a9d8bc;font-weight:800;font-size:14px}
.copy{margin-left:auto;min-height:44px;min-width:96px;padding:0 18px;border:0;border-radius:12px;background:var(--yel);color:var(--gd);font:inherit;font-weight:900;font-size:16px;cursor:pointer}
.code{margin:0;padding:20px;color:#eafff2;font-size:20px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;max-width:100%}
.explain{margin-top:20px;background:var(--mint);border-radius:20px;padding:20px 24px}
.ex-k{margin:0 0 8px;font-weight:900;color:var(--g);font-size:16px;letter-spacing:.06em;text-transform:uppercase}
.ex-list{margin:0;padding-left:1.4em}
.ex-list li{margin-bottom:6px}
.ex-list li::marker{font-weight:900;color:var(--g)}
.explain code,.tip code{background:#fff;padding:1px 6px;border-radius:6px;font-size:.9em;color:var(--gd);overflow-wrap:anywhere}
.tip{margin:10px 0 0;font-weight:600}
.sheet-card{background:var(--yel-l);border-radius:20px;padding:20px;transform:rotate(1deg);min-width:0}
.sheet-scroll{overflow-x:auto}
.sheet{border-collapse:collapse;width:100%;background:#fff;font-size:16px;border-radius:10px;overflow:hidden}
.sheet th,.sheet td{border:1px solid #dfe5dc;padding:8px 10px;text-align:left;white-space:nowrap}
.sheet thead th,.sheet tbody th{background:#eef3ee;color:#7a857c;font-weight:700;text-align:center;font-size:14px;width:34px}
.sheet .hd-c{font-weight:900;color:var(--gd)}
.sheet .hit td{background:#e6f8ee}
.sheet .key{outline:3px solid var(--g);outline-offset:-3px;font-weight:800}
.sheet .ret{background:var(--yel)!important;font-weight:900}
.sheet-out{margin:12px 0 0;font-weight:700}
.sheet-out .out{background:var(--g);color:#fff;padding:2px 10px;border-radius:8px}
/* gallery */
.gal-sec{background:linear-gradient(180deg,var(--cream),#eef8ef)}
.gal{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.gx{background:#fff;border-radius:24px;padding:20px;box-shadow:0 8px 24px rgba(23,38,29,.08);display:flex;flex-direction:column;min-width:0}
.gx-tag{align-self:flex-start;margin:0;background:var(--mint);color:var(--g);font-weight:900;font-size:16px;padding:2px 12px;border-radius:999px}
.gx-tag.y{background:var(--yel-l);color:#8a5d00}.gx-tag.c{background:#ffe6dd;color:#b34a2c}
.gx-q{margin:10px 0 12px;font-weight:700;flex:1}
.code.sm{font-size:16px;overflow-wrap:break-word;padding:14px 16px;background:#13261b;border-radius:14px}
/* tools */
.tools-sec{background:var(--g2);position:relative;overflow:hidden}
.tools-sec::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:var(--g);right:-120px;top:-140px}
.tools-sec .wrap{position:relative}
.tools-sec h2{color:#fff}
.tools-sec .kicker{color:var(--yel)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border-radius:24px;padding:20px;text-decoration:none;display:grid;grid-template-columns:88px 1fr;grid-template-rows:auto auto;column-gap:16px;align-items:center;transition:transform .15s;min-height:44px}
.card:hover{transform:translateY(-4px)}
.card img{grid-row:1/3;width:88px;height:88px;border-radius:20px;object-fit:cover;background:#fffaf0}
.ct{margin:0;font-size:20px;font-weight:900;color:var(--gd);align-self:end;line-height:1.3}
.cd{margin:0;color:var(--mute);align-self:start}
.c1,.c4{box-shadow:0 6px 0 var(--yel)}.c2,.c5{box-shadow:0 6px 0 var(--mint2)}.c3,.c6{box-shadow:0 6px 0 var(--coral)}
/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.steps li{background:#fff;border-radius:24px;padding:16px 16px 24px;position:relative;box-shadow:0 8px 24px rgba(23,38,29,.08)}
.steps img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:18px;background:var(--mint)}
.st-n{position:absolute;top:4px;left:4px;width:48px;height:48px;border-radius:50%;background:var(--yel);color:var(--gd);display:grid;place-items:center;font-size:22px;font-weight:900;box-shadow:0 4px 0 #d9a21d}
.st-t{font-size:21px;font-weight:900;color:var(--gd);margin:14px 0 4px}
.steps p{margin:0}
/* faq */
.faq{background:#fff}
.faq details{background:var(--cream);border-radius:18px;margin-bottom:12px;padding:0 20px;border:2px solid #edf2ea}
.faq summary{min-height:60px;display:flex;align-items:center;font-weight:900;cursor:pointer;list-style:none;gap:12px;font-size:18px;color:var(--gd)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"?";display:grid;place-items:center;flex:none;width:32px;height:32px;border-radius:50%;background:var(--g);color:#fff}
.faq summary::after{content:"+";margin-left:auto;font-size:24px;color:var(--g)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 0 18px 44px}
/* footer */
.ft{background:#0f2a1c;color:#e3f1e8;padding:40px 0}
.ft .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:16px 32px}
.ft-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;margin:0}
.ft-links{display:flex;flex-wrap:wrap;gap:4px}
.ft-links a{min-height:44px;display:flex;align-items:center;padding:0 12px;text-decoration:none;font-weight:700}
.ft-links a:hover{text-decoration:underline}
.ft small{margin-left:auto;font-size:14px;opacity:.75}
/* tablet */
@media (max-width:960px){.hero-in{grid-template-columns:1fr}.hero-art{max-width:520px;margin:0 auto}.result{grid-template-columns:1fr}.gal{grid-template-columns:1fr 1fr}.cards{grid-template-columns:1fr 1fr}.gnav{display:none}.menu-btn{display:block}}
/* mobile */
@media (max-width:640px){
 body{font-size:16px}
 .wrap{padding:0 16px}
 .hd .wrap{height:52px}.logo{font-size:18px}.seal{width:34px;height:34px;font-size:15px}
 .hero{padding:12px 0 28px}
 .b1{width:170px;height:170px;right:-80px;top:-70px}.b3{display:none}
 .eyebrow{display:none}
 h1{font-size:30px;margin-bottom:6px}
 .lead{font-size:16px;margin-bottom:10px;line-height:1.45}
 .tool{padding:14px;border-radius:20px}
 .tl{font-size:16px;margin-bottom:4px}
 textarea{min-height:84px;padding:10px 12px;font-size:16px}
 .seg{margin:10px 0 4px}
 .grid{gap:8px}
 .fl{font-size:13px}
 .f input{padding:0 8px}
 .btn{margin-top:10px;min-height:54px}
 .hero-art{margin-top:8px}
 .art-frame{aspect-ratio:4/3;transform:none}
 .bd1{left:8px;top:-12px}.bd2{right:8px}
 .ad-728,.ad-336{display:none}.ad-300{display:block}
 .sec{padding:44px 0}
 h2{font-size:26px}
 .code{font-size:17px;padding:16px}
 .explain{padding:16px 18px}
 .sheet-card{transform:none;padding:16px}
 .sheet th,.sheet td{padding:6px 8px}
 .gal{grid-template-columns:1fr}
 .cards{grid-template-columns:1fr;gap:14px}
 .card{grid-template-columns:72px 1fr}.card img{width:72px;height:72px}
 .steps{grid-template-columns:1fr}
 .faq summary{font-size:17px}
 .faq details p{padding-left:0}
 .ft small{margin-left:0}
}
/* demo states: ?state=loading / ?state=error */
.spin{display:none;width:22px;height:22px;border-radius:50%;border:3px solid rgba(255,255,255,.35);border-top-color:#fff;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.btn:disabled{background:#5c9e78;box-shadow:0 4px 0 #3f7a5a;cursor:progress;transform:none}
.is-loading .btn .spin{display:block}.is-loading .btn .arw{display:none}
.err{margin-top:12px;background:#fff1ec;border:2px solid #ffc6b4;border-radius:14px;padding:12px 14px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.err[hidden]{display:none}
.err-t{margin:0;flex:1 1 200px;font-weight:800;color:#a8391b;display:flex;gap:10px;align-items:center;line-height:1.4}
.err-i{flex:none;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:#e8573a;color:#fff;font-weight:900}
.retry{min-height:44px;padding:0 18px;border:2px solid #e8573a;background:#fff;color:#c2431f;border-radius:12px;font:inherit;font-weight:900;font-size:16px;cursor:pointer}
.is-error #ask{border-color:#ffc6b4}
.skel{display:none;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:32px}
.is-loading .skel{display:grid}.is-loading .result{display:none}
.sk{border-radius:14px;background:linear-gradient(90deg,#e8f1eb 25%,#f5faf6 50%,#e8f1eb 75%);background-size:200% 100%;animation:sh 1.2s infinite}
@keyframes sh{to{background-position:-200% 0}}
.sk-code{height:120px;border-radius:20px;margin-bottom:20px}.sk-l{height:18px;margin-bottom:12px}.sk-l.s{width:60%}.sk-side{height:240px;border-radius:20px}
@media (max-width:960px){.skel{grid-template-columns:1fr}}
@media (max-width:640px){.err{padding:10px 12px}.retry{width:100%}}
.privacy{margin:4px 0 0;font-size:16px;color:var(--mute);text-align:center;line-height:1.4}
/* Live interaction feedback, keeping the accepted layout. */
.validation{color:#a8391b;font-weight:800;margin:6px 0}
#notes{padding-left:32px}#notes li+li{margin-top:8px}
.sheet-card[hidden]{display:none}
@media(max-width:960px){.menu-open .gnav{display:flex;position:absolute;top:52px;left:16px;right:16px;background:white;padding:12px;z-index:10;flex-wrap:wrap}}