/* Yineng Stationery — temperapaintsticks.com */
:root{
--paper:#FFFBF2;--ink:#232946;--primary:#2E5BFF;--coral:#FF6B6B;--sunny:#FFC93C;
--teal:#2EC4B6;--sky:#4D96FF;--lilac:#9B5DE5;--orange:#FF8C42;
--muted:#5b6079;--line:#e9e2d2;--card:#ffffff;
--font-d:'Baloo 2','Nunito',system-ui,sans-serif;--font-b:'Nunito',system-ui,-apple-system,sans-serif;
--radius:18px;--ease:cubic-bezier(.22,.8,.28,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-b);color:var(--ink);background:var(--paper);line-height:1.65}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--font-d);line-height:1.25;margin:0 0 .6em}
h1{font-size:clamp(2rem,4.5vw,3.2rem)}h2{font-size:clamp(1.5rem,3vw,2.1rem)}
p{margin:0 0 1em}.muted{color:var(--muted)}.fineprint{font-size:.85rem;color:var(--muted)}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:800;color:var(--primary);margin-bottom:.8em}
.lede{font-size:1.15rem;color:var(--muted);max-width:60ch}
a{color:var(--primary)}
.btn{display:inline-block;padding:.7em 1.5em;border-radius:999px;font-weight:800;text-decoration:none;
border:2px solid transparent;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s}
.btn-primary{background:var(--primary);color:#fff}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline{border-color:var(--primary);color:var(--primary);background:#fff}
.btn-lg{font-size:1.05rem;padding:.8em 1.8em}
@media (hover: hover){.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(35,41,70,.15)}}
.btn:active{transform:scale(.97)}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:24px;padding:14px 24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-d);font-weight:700;font-size:1.3rem}
.brand em{font-style:normal;color:var(--primary)}
.brand-mark{width:26px;height:26px;border-radius:8px;background:conic-gradient(var(--coral),var(--sunny),var(--teal),var(--sky),var(--lilac),var(--coral))}
.main-nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.main-nav a{display:block;padding:.5em .7em;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:.95rem}
.main-nav a.active{background:#eef2ff;color:var(--primary)}
@media (hover: hover){.main-nav a:hover{background:#eef2ff;color:var(--primary)}}
.nav-cta{margin-left:auto}
.nav-toggle{display:none}
/* hero */
.hero{padding:72px 0 56px;background:linear-gradient(180deg,#fff6e3,transparent)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;min-width:0}
.hero-grid>*{min-width:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:1.5em}
.hero-art{background:#fff;border-radius:24px;padding:28px;box-shadow:0 16px 40px rgba(35,41,70,.08)}
/* story */
.story{padding:64px 0}
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;min-width:0}
.story-grid>*{min-width:0}
.timeline{display:flex;flex-direction:column;gap:0}
.t-item{display:grid;grid-template-columns:28px 1fr;gap:14px;position:relative;padding-bottom:28px}
.t-item:not(:last-child)::before{content:"";position:absolute;left:13px;top:28px;bottom:0;width:2px;background:var(--line)}
.t-dot{width:28px;height:28px;border-radius:50%;background:var(--primary);border:5px solid #dbe4ff}
.t-item h3{margin:0 0 .2em}.t-item p{margin:0;color:var(--muted)}
/* series */
.series{padding:64px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:2em;min-width:0}
.series-grid>*{min-width:0}
.series-card{display:block;background:var(--paper);border:2px solid var(--line);border-radius:var(--radius);
padding:28px;text-decoration:none;color:var(--ink);transition:transform .18s var(--ease),border-color .18s}
.series-card h3{margin:.6em 0 .3em}.series-card p{color:var(--muted);font-size:.95rem}
.card-link{font-weight:800;color:var(--primary)}
@media (hover: hover){.series-card:hover{transform:translateY(-4px);border-color:var(--accent)}}
.series-card:active{transform:scale(.98)}
.series-swatch{display:inline-block}
/* flagship */
.flagship{padding:72px 0}
.flag-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;min-width:0}
.flag-grid>*{min-width:0}
.flag-img img{width:100%;height:auto;border-radius:24px;box-shadow:0 16px 40px rgba(35,41,70,.1)}
.spec-line{display:grid;gap:8px;margin:1.2em 0}
.spec-line>div{display:flex;gap:12px}.spec-line dt{font-weight:800;min-width:110px}.spec-line dd{margin:0}
/* cert band */
.cert-band{padding:56px 0;background:#232946;color:#fff}
.cert-band h2{color:#fff}.cert-band .muted{color:#c9cede}.cert-band .fineprint{color:#9aa0bd}
.cert-chips{display:flex;flex-wrap:wrap;gap:10px;margin:1.2em 0}
.cert-chip{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);padding:.4em 1em;border-radius:999px;font-weight:700}
/* cta */
.cta-band{padding:64px 0}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:32px;background:linear-gradient(120deg,#2E5BFF,#6C8CFF);
border-radius:28px;padding:44px;color:#fff;flex-wrap:wrap}
.cta-in h2{color:#fff}.cta-in p{color:#e3e9ff;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-ghost{border-color:#fff;color:#fff}
/* page hero / split */
.page-hero{padding:56px 0 40px;background:linear-gradient(180deg,#fff6e3,transparent);border-left:12px solid var(--accent,#2E5BFF)}
.split{display:grid;grid-template-columns:1fr 320px;gap:48px;padding:8px 0 64px;min-width:0}
.split>*{min-width:0}
.prose>*{min-width:0}
.side h3{font-size:1.05rem}
.mini-grid{display:grid;gap:8px;margin-bottom:24px}
.mini-card{display:block;padding:.7em 1em;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink);font-weight:700}
.side-cta{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:8px}
/* products */
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;min-width:0}
.product-grid>*{min-width:0}
.product-card{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:24px}
.product-card h3{font-size:1.15rem}
.product-card dl{display:grid;gap:6px;margin:1em 0}
.product-card dl>div{display:flex;gap:10px}.product-card dt{font-weight:800;min-width:90px;font-size:.9rem}.product-card dd{margin:0;font-size:.95rem}
.checklist{list-style:none;padding:0}
.checklist li{padding:.5em 0 .5em 2em;position:relative}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:800}
.facts{list-style:none;padding:0}.facts li{padding:.4em 0;border-bottom:1px dashed var(--line)}
.steps{padding-left:1.2em}.steps li{margin-bottom:.8em}
.cert-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.cert-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:.8em 1.2em}
/* blog */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:8px 0 64px;min-width:0}
.blog-grid>*{min-width:0}
.blog-card{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:28px}
.blog-card h2{font-size:1.25rem}.blog-card h2 a{color:var(--ink);text-decoration:none}
ul.plain{list-style:none;padding:0}.plain li{margin-bottom:.6em}
/* form */
.lead-form{display:grid;gap:14px;max-width:560px}
.lead-form label{font-weight:700;display:grid;gap:6px}
.lead-form input,.lead-form textarea{font:inherit;padding:.7em 1em;border:2px solid var(--line);border-radius:12px;background:#fff}
.lead-form input:focus,.lead-form textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}
.honeypot{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
/* footer */
.site-footer{background:#232946;color:#c9cede;margin-top:0;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;min-width:0}
.footer-grid>*{min-width:0}
.site-footer h3{color:#fff;font-size:1.05rem}
.site-footer ul{list-style:none;padding:0}.site-footer li{margin-bottom:.5em}
.site-footer a{color:#c9cede;text-decoration:none}
@media (hover: hover){.site-footer a:hover{color:#fff}}
.footer-base{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:20px 0;font-size:.9rem}
/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
html.no-js .reveal{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}
/* responsive */
@media(max-width:960px){
.hero-grid,.story-grid,.flag-grid{grid-template-columns:1fr}
.series-grid,.blog-grid{grid-template-columns:repeat(2,1fr)}
.split{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:899px){
.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 24px}
.main-nav.open{display:block}.main-nav ul{flex-direction:column}
.nav-toggle{display:block;margin-left:auto;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px}
.nav-cta.btn{display:none}
.site-header{position:relative}
}
@media(max-width:600px){.series-grid,.blog-grid,.product-grid,.cert-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}