:root{--navy:#071635;--navy2:#041027;--blue:#155cf7;--sky:#16b9ff;--text:#10203f;--muted:#69758c;--line:#dce7f5;--soft:#f4f8ff;--white:#fff;--shadow:0 22px 70px rgba(7,22,53,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#fff,#f7fbff 40%,#fff);overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 5vw;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,231,245,.9)}.brand img{display:block}.nav{display:flex;align-items:center;gap:20px;font-weight:700;font-size:14px}.nav a{color:#263955}.nav a:hover{color:var(--blue)}.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;padding:12px 20px;background:#fff;font-weight:800;box-shadow:0 8px 20px rgba(7,22,53,.06)}.btn.primary,.nav-cta{background:linear-gradient(135deg,var(--blue),var(--sky));color:white;border:0}.btn.small{padding:8px 12px;font-size:12px}.menu-btn{display:none;border:0;background:#fff;font-size:28px}.hero,.page-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;padding:72px 5vw;background:radial-gradient(circle at 15% 15%,rgba(22,185,255,.2),transparent 32%),linear-gradient(135deg,#fff 0%,#eef7ff 55%,#f8fbff 100%)}.page-hero{display:block;text-align:center;padding:58px 5vw}.hero h1,.page-hero h1{font-size:clamp(38px,6vw,76px);line-height:1.02;margin:12px 0;color:var(--navy);letter-spacing:-.05em}.hero p,.page-hero p{font-size:clamp(18px,2.3vw,22px);color:#526179;max-width:860px}.eyebrow{display:inline-flex;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:900;font-size:12px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0}.trust{display:flex;gap:10px;flex-wrap:wrap}.trust span,.privacy-note{border:1px solid #cfe0f5;background:#fff;border-radius:999px;padding:9px 13px;color:#44546c;font-size:13px;font-weight:800}.preview-panel,.tool-box,.result-card,.card,.side-card,.cta-box{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}.preview-panel{padding:30px}.preview-panel img{width:82px}.fake-input{margin-top:18px;background:#f1f7ff;border:1px solid #dbeafd;border-radius:18px;padding:18px;color:#617089}.section{padding:54px 5vw}.section h2{font-size:clamp(28px,3vw,44px);color:var(--navy);letter-spacing:-.035em}.grid{display:grid;gap:20px}.cards{grid-template-columns:repeat(3,minmax(0,1fr))}.card{padding:24px;transition:.2s transform,.2s box-shadow}.card:hover{transform:translateY(-4px);box-shadow:0 26px 80px rgba(21,92,247,.16)}.card h2,.card h3{color:var(--navy);margin:8px 0}.card p{color:var(--muted);line-height:1.65}.pill-grid{display:flex;flex-wrap:wrap;gap:12px}.pill-grid a{border:1px solid var(--line);border-radius:999px;padding:12px 16px;background:#fff;font-weight:800}.split{display:grid;grid-template-columns:1fr 1fr;gap:28px}.steps{display:grid;gap:12px;font-weight:800}.cta-box{padding:28px;background:linear-gradient(135deg,var(--navy),#0b2f7c);color:white}.cta-box h2,.cta-box p{color:white}.tool-box{padding:24px}.tool-box label{display:block;font-weight:900;margin:18px 0 8px}.tool-box textarea,.tool-box select{width:100%;border:1px solid var(--line);border-radius:18px;padding:16px;font:inherit;background:#fff}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}.hidden{display:none}.result-card{padding:22px;margin-top:20px}.result-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.result-card pre{white-space:pre-wrap;word-break:break-word;background:#071635;color:#eaf3ff;border-radius:20px;padding:20px;line-height:1.7;max-height:560px;overflow:auto}.article-layout{max-width:980px;margin:auto;padding:46px 5vw}.article-head{text-align:center}.article{font-size:18px;line-height:1.82}.article p,.article li{color:#40506a}.article blockquote{border-left:4px solid var(--blue);padding:14px 18px;background:#f1f7ff;border-radius:14px}.article details{border:1px solid var(--line);border-radius:16px;padding:14px;margin:12px 0;background:#fff}.side-card{padding:24px}.ad-slot{min-height:110px;margin:24px 5vw;border-radius:22px;background:transparent}.footer{background:linear-gradient(135deg,var(--navy2),var(--navy));color:#dbe8ff;padding:52px 5vw 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.footer a{display:block;color:#dbe8ff;margin:9px 0}.footer-logo{width:220px;background:#fff;border-radius:16px;padding:8px}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:30px;padding-top:18px;color:#aebcce}.muted{color:#718096}@media(max-width:900px){.hero,.split{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr}.nav{display:none;position:absolute;left:5vw;right:5vw;top:76px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}.nav.open{display:flex}.menu-btn{display:block}}@media(max-width:560px){.site-header{padding:12px 16px}.brand img{width:176px}.hero,.page-hero,.section{padding-left:18px;padding-right:18px}.hero h1,.page-hero h1{font-size:38px}.cards{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.result-head{align-items:flex-start}.btn{width:100%;margin-top:6px}.hero-actions .btn{width:auto}.article{font-size:16px}}@media print{.site-header,.footer,.btn,.ad-slot{display:none}.result-card pre{color:#111;background:white;border:1px solid #ccc}}
.branded-hero{position:relative;overflow:hidden}.branded-hero:after{content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;background:radial-gradient(circle,rgba(21,92,247,.16),transparent 65%);pointer-events:none}.section-intro{max-width:780px;color:var(--muted);font-size:18px;line-height:1.7}.mini-brand{width:54px;background:#f4f8ff;border-radius:16px;padding:8px}.clean-list{padding-left:20px;line-height:1.8;color:#40506a}.tool-article{max-width:980px;margin:auto}.summary-box,.toc,.editor-note{border:1px solid var(--line);border-radius:22px;background:#fff;padding:20px;margin:22px 0;box-shadow:0 10px 32px rgba(7,22,53,.06)}.toc ol{columns:2;margin-bottom:0}.prompt-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.prompt-card{display:flex;flex-direction:column;gap:10px}.prompt-preview{white-space:pre-wrap;word-break:break-word;max-height:180px;overflow:auto;background:#f4f8ff;border:1px solid var(--line);border-radius:16px;padding:14px;line-height:1.55;color:#21324d}.card-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}.brand-divider{height:1px;background:linear-gradient(90deg,transparent,var(--blue),transparent);margin:30px 0}.article a{color:var(--blue);font-weight:800}@media(max-width:720px){.prompt-grid{grid-template-columns:1fr}.toc ol{columns:1}.hero-actions .btn{width:100%}.pill-grid a{max-width:100%;overflow-wrap:anywhere}}


/* Prompt 4 production polish: accessibility, responsive safety, stable layouts */
.skip-link{position:absolute;left:12px;top:-60px;background:var(--navy);color:#fff;padding:10px 14px;border-radius:12px;z-index:999;transition:top .2s}.skip-link:focus{top:12px}.btn:focus-visible,.nav a:focus-visible,.pill-grid a:focus-visible,.menu-btn:focus-visible,textarea:focus,select:focus{outline:3px solid rgba(21,92,247,.35);outline-offset:3px}.site-header{min-height:74px}.brand img{width:min(210px,54vw);height:auto}.nav{min-width:0}.nav a{white-space:nowrap}.card,.tool-box,.side-card,.result-card{overflow:hidden}.card span{font-size:28px}.article h2{scroll-margin-top:96px}.article img,.card img{height:auto}.page-hero p{margin-left:auto;margin-right:auto}.tool-box textarea{resize:vertical;min-height:180px}.result-card pre{font-size:14px;tab-size:2}.footer-logo{height:auto}.ad-slot:empty{display:none}.summary-box ul{margin:8px 0 0}.side-card{align-self:start}.prompt-preview{font-size:14px}.clean-list li{margin-bottom:6px}.footer a:hover,.pill-grid a:hover{color:var(--blue)}
@media(max-width:1180px){.nav{gap:12px;font-size:13px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{grid-template-columns:1fr}.preview-panel{max-width:760px}}
@media(max-width:900px){.site-header{min-height:68px}.nav.open{max-height:calc(100vh - 96px);overflow:auto}.nav a,.nav-cta{white-space:normal}.split{gap:22px}.article-layout{padding-top:28px}.footer-grid{gap:22px}}
@media(max-width:414px){.brand img{width:158px}.menu-btn{font-size:24px}.hero h1,.page-hero h1{font-size:34px;letter-spacing:-.04em}.hero p,.page-hero p{font-size:17px}.section h2{font-size:28px}.card,.tool-box,.result-card,.side-card,.cta-box{border-radius:20px;padding:18px}.pill-grid a{padding:10px 12px}.result-card pre{padding:14px;font-size:13px}.footer{padding-left:18px;padding-right:18px}}
@media(max-width:340px){.brand img{width:138px}.site-header{padding-left:12px;padding-right:12px}.hero,.page-hero,.section{padding-left:14px;padding-right:14px}.btn,.nav-cta{padding:11px 14px}.trust span,.privacy-note{font-size:12px}.card h2,.card h3{font-size:20px}}

/* Prompt 5 authority and engagement polish */
.result-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.result-links a{border:1px solid var(--line);border-radius:999px;padding:9px 12px;background:#fff;font-size:13px;font-weight:800;color:var(--blue)}.summary-box strong,.editor-note strong{color:var(--navy)}.article .summary-box{font-size:17px}.card h2 a{color:var(--navy)}.article details summary{cursor:pointer;font-weight:900;color:var(--navy)}.page-hero,.hero{contain:layout paint}.prompt-card span{color:var(--muted);font-weight:800}.footer h3{color:#fff}.toc a:hover,.article a:hover{text-decoration:underline}.tool-box .privacy-note{display:inline-flex;margin-bottom:8px}.card-actions .btn{width:auto}.section .summary-box{max-width:980px}@media(max-width:560px){.result-links a{width:100%;text-align:center}.card-actions .btn{width:auto}.article .summary-box{font-size:16px}}
.quick-answer,.key-takeaway,.image-note,.source-note{background:#f7fbff;border:1px solid #dbeafe;border-radius:22px;padding:18px 20px;margin:18px 0;box-shadow:0 10px 28px rgba(15,23,42,.05)}
.key-takeaway{background:#eef6ff}.image-note,.source-note{font-size:.95rem;color:#334155}.table-wrap{overflow-x:auto;margin:18px 0;border-radius:18px;border:1px solid #e2e8f0}.table-wrap table{width:100%;border-collapse:collapse;background:white}.table-wrap th,.table-wrap td{padding:14px;border-bottom:1px solid #e2e8f0;text-align:left}.table-wrap th{background:#f8fafc;color:#0f172a}