/* YCU Lite — base + layout + page sections. System fonts, no web fonts. */
:root{
  --ink:#14202b;--text:#2b3640;--muted:#5d6974;--line:#e2e6ea;--soft:#f4f6f8;--soft2:#eef1f4;
  --accent:#b3122a;--accent-d:#8e0e21;--gold:#c58f1d;--white:#fff;
  --r:6px;--wrap:1200px;--gap:clamp(16px,3vw,32px);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.65 var(--font);color:var(--text);background:var(--white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--accent-d)}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.75rem,3.2vw,2.6rem)}
h2{font-size:clamp(1.35rem,2.2vw,1.9rem)}
h3{font-size:1.2rem}
h4{font-size:1.05rem}
p,ul,ol,table,figure{margin:0 0 1.1em}
ul,ol{padding-left:1.3em}
.sr,.skip:not(:focus){position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip:focus{position:fixed;top:8px;left:8px;z-index:99;background:var(--ink);color:#fff;padding:8px 12px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.lead{font-size:1.125rem;color:var(--muted);max-width:780px}

/* Buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;border:2px solid var(--accent);padding:.7em 1.4em;border-radius:var(--r);font-weight:600;text-decoration:none;line-height:1.2;cursor:pointer;font-size:1rem}
.btn:hover{background:var(--accent-d);border-color:var(--accent-d);color:#fff}
.btn-sm{padding:.5em 1em;font-size:.9rem}
.btn-ghost{background:transparent;color:var(--accent)}
.btn-ghost:hover{background:var(--accent);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--soft2);border-color:var(--soft2);color:var(--ink)}

/* Header */
.topbar{background:var(--ink);color:#c9d2da;font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:6px;padding-bottom:6px}
.topbar a{color:#fff;text-decoration:none}
@media (max-width:700px){.topbar span{display:none}.topbar .wrap{justify-content:center}}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.3rem;flex-shrink:0}
.brand-logo{max-height:48px;width:auto}
.brand-text .y{color:var(--accent)}.brand-text .c{color:var(--gold);margin-right:.25em}
.site-nav{display:flex;align-items:center;gap:18px}
.site-nav .menu{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.site-nav .menu>li{position:relative}
.site-nav .menu a{display:block;padding:10px 10px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;border-radius:4px}
.site-nav .menu a:hover,.site-nav .menu a[aria-current="page"],.site-nav .current-menu-item>a{color:var(--accent)}
.site-nav .sub-menu{list-style:none;margin:0;padding:8px;position:absolute;left:0;top:100%;min-width:240px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:0 10px 30px rgba(20,32,43,.08);display:none}
.site-nav .sub-menu a{font-weight:500;padding:8px 10px}
.site-nav li:hover>.sub-menu,.site-nav li:focus-within>.sub-menu{display:block}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.nav-toggle span:first-child,.nav-toggle span:first-child::before,.nav-toggle span:first-child::after{position:absolute;left:11px;width:22px;height:2px;background:var(--ink);content:"";transition:.2s}
.nav-toggle span:first-child{top:21px}
.nav-toggle span:first-child::before{left:0;top:-7px}.nav-toggle span:first-child::after{left:0;top:7px}
@media (max-width:1000px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 20px;max-height:calc(100vh - 100px);overflow:auto}
  .nav-open .site-nav{display:flex}
  .site-nav .menu{flex-direction:column}
  .site-nav .sub-menu{display:block;position:static;border:0;box-shadow:none;padding:0 0 0 14px;min-width:0}
  .nav-cta{align-self:flex-start}
}

/* Breadcrumbs / page head */
.crumbs ol{list-style:none;margin:0;padding:14px 0 0;display:flex;flex-wrap:wrap;gap:6px;font-size:.85rem;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:#aab3bb}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent)}
.page-head{padding-bottom:12px}
.page-head h1{margin-top:14px}

/* Generic sections used by pages/*.html */
.sec{padding:clamp(40px,6vw,80px) 0}
.sec-soft{background:var(--soft)}
.sec-dark{background:var(--ink);color:#d6dde3}
.sec-dark h2,.sec-dark h3{color:#fff}
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head p{color:var(--muted)}
.sec-dark .sec-head p{color:#b8c3cc}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:8px}
.hero{padding:clamp(28px,5vw,64px) 0 clamp(36px,5vw,64px);background:linear-gradient(180deg,var(--soft) 0%,#fff 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--gap);align-items:center}
.hero h1{font-size:clamp(1.9rem,3.6vw,2.9rem)}
.hero .lead{margin-bottom:22px}
.hero-img img{border-radius:10px;width:100%;aspect-ratio:3/2;object-fit:cover}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.claims{list-style:none;padding:0;margin:22px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.claims li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:.88rem;font-weight:600;color:var(--ink)}
.grid-2,.grid-3,.grid-4{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);align-items:center}
.split img{border-radius:10px;width:100%;object-fit:cover}
.box{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}
.sec-soft .box{border-color:transparent}
.box h3{margin-bottom:.4em}
.box p:last-child,.box ul:last-child{margin-bottom:0}
.cat-card{display:block;text-decoration:none;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:border-color .2s,transform .2s}
.cat-card:hover{border-color:var(--accent);transform:translateY(-2px);color:var(--ink)}
.cat-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--soft)}
.cat-card span{display:block;padding:12px 14px;font-weight:700}
.cat-card small{display:block;padding:0 14px 14px;color:var(--muted);font-weight:400}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:16px}
.steps li{counter-increment:s;position:relative;padding:16px 16px 16px 64px;background:#fff;border:1px solid var(--line);border-radius:10px}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:16px;top:14px;font-weight:800;font-size:1.3rem;color:var(--accent)}
.steps strong{display:block;color:var(--ink)}
.ticks{list-style:none;padding:0}
.ticks li{position:relative;padding-left:26px;margin-bottom:.5em}
.ticks li::before{content:"";position:absolute;left:4px;top:.55em;width:10px;height:6px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.photo-grid figure{margin:0}
.photo-grid img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:8px}
.photo-grid figcaption{font-size:.85rem;color:var(--muted);padding-top:6px}
.note{font-size:.9rem;color:var(--muted)}
.table-wrap{overflow-x:auto}
.spec{width:100%;border-collapse:collapse;font-size:.95rem}
.spec th,.spec td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.spec th{background:var(--soft);color:var(--ink)}
.faq details{border:1px solid var(--line);border-radius:8px;background:#fff;margin-bottom:10px}
.faq summary{cursor:pointer;padding:14px 44px 14px 16px;font-weight:700;color:var(--ink);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:10px;font-size:1.4rem;color:var(--accent)}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding:0 16px 14px}
.faq details>div p:last-child{margin:0}
.faq h2.faq-q{font-size:1.05rem;margin:0}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:var(--gap);align-items:start}
.contact-card{background:var(--soft);border-radius:10px;padding:24px}
.contact-card dl{margin:0}
.contact-card dt{font-weight:700;color:var(--ink);margin-top:12px}
.contact-card dt:first-child{margin-top:0}
.contact-card dd{margin:2px 0 0}
.cta-band{background:var(--ink);color:#cdd6de;padding:48px 0;margin-top:56px}
.cta-band h2{color:#fff}
.cta-band p{max-width:720px}
.page-html>.cta-band:last-child{margin-top:0}

/* Cards / blog */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:32px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.card-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card-body{padding:16px 18px}
.card-title{font-size:1.1rem;margin:0 0 6px}
.card-title a{color:var(--ink);text-decoration:none}
.card-title a:hover{color:var(--accent)}
.card-meta,.post-meta{color:var(--muted);font-size:.88rem}
.post-hero img{border-radius:10px;margin-bottom:8px}
.author-box{background:var(--soft);border-radius:10px;padding:18px 20px;margin-top:32px}
.author-box p{margin:0 0 .4em}
.related-posts{margin-top:48px}
.link-list{columns:2;padding-left:1.2em}
.nav-links{display:flex;gap:6px;flex-wrap:wrap}
.page-numbers{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:4px;text-decoration:none;color:var(--ink)}
.page-numbers.current{background:var(--ink);color:#fff;border-color:var(--ink)}

/* Inquiry form */
.inq-form{background:#fff;border:1px solid var(--line);border-radius:10px;padding:clamp(18px,3vw,28px)}
.inq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.inq-form label{display:block;font-weight:600;font-size:.92rem;color:var(--ink);margin-bottom:4px}
.inq-form label span{color:var(--accent)}
.inq-form input,.inq-form textarea{width:100%;font:inherit;padding:10px 12px;border:1px solid #cfd6dc;border-radius:var(--r);background:#fff;color:var(--text)}
.inq-form input:focus,.inq-form textarea:focus{outline:2px solid rgba(179,18,42,.25);border-color:var(--accent)}
.inq-form p{margin-bottom:14px}
.inq-hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.inq-note{font-size:.85rem;color:var(--muted)}
.inq-status{font-weight:600;margin:0}
.inq-status.is-ok{color:#1d7a3a}.inq-status.is-error{color:var(--accent)}
.inq-form button[disabled]{opacity:.6;cursor:wait}

/* Footer */
.site-footer{background:#0f1820;color:#aeb9c3;font-size:.92rem;padding-top:48px;margin-top:0}
main+.site-footer{margin-top:0}
.site-main{min-height:50vh;padding-bottom:0}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.3fr;gap:var(--gap);padding-bottom:32px}
.site-footer a{color:#dde4ea;text-decoration:none}.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:6px}
.f-brand{color:#fff;font-weight:800;font-size:1.15rem}
.f-title{color:#fff;font-weight:700;margin-bottom:10px}
.f-contact li{margin-bottom:8px}
.site-footer .btn{margin-top:8px;color:#fff}
.footer-bottom{border-top:1px solid #23303b;padding-top:16px;padding-bottom:20px;display:flex;justify-content:space-between;gap:12px;font-size:.85rem}

@media (max-width:1000px){
  .hero-grid,.split,.contact-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3,.post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .photo-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4,.post-grid,.inq-grid,.footer-grid{grid-template-columns:1fr}
  .photo-grid{grid-template-columns:1fr 1fr}
  .link-list{columns:1}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.h3{font-size:1.2rem}
.box-img{border-radius:6px;margin-bottom:12px;aspect-ratio:4/3;object-fit:cover;width:100%}
.mt{margin-top:32px}
.hero-img img.img-contain{aspect-ratio:1/1;object-fit:contain;background:#fff}
.sec-tight{padding-top:20px}