/* excellent-sla.com — design tokens from design.md */
:root{
  --bg:#121212;
  --surface:#1a1a1a;
  --text:#e0e1eb;
  --primary:#ffffff;
  --secondary:#1d258c;
  --accent:#1858b5;
  --border:rgba(255,255,255,.08);
  --max-w:1150px;
  --radius-sm:4px;
  --radius-md:8px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth;overflow-x:hidden}

body{
  background:var(--bg);
  color:var(--text);
  font-family:'Quicksand',-apple-system,BlinkMacSystemFont,"PingFang TC","Microsoft JhengHei",sans-serif;
  line-height:1.6;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  overflow-x:hidden;
}

img{max-width:100%;display:block}

a{color:inherit;text-decoration:none}

.wrap{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
header.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(18,18,18,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:var(--max-w);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--primary);font-size:1.05rem}
.brand img{height:32px;width:auto}

nav.main-nav ul{list-style:none;display:flex;gap:28px}
nav.main-nav a{
  font-size:.95rem;color:var(--text);padding:6px 2px;border-bottom:2px solid transparent;
  transition:color .15s,border-color .15s;
}
nav.main-nav a:hover,
nav.main-nav a[aria-current="page"]{color:var(--primary);border-color:var(--accent)}

.nav-toggle{
  display:none;background:none;border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--primary);width:40px;height:40px;font-size:1.2rem;cursor:pointer;
}

/* mobile full-screen nav: kept as a sibling of <header>, NOT nested inside it —
   header is position:sticky, which would become the fixed-position containing
   block for a nested nav and break its height. Keep this element top-level. */
.mobile-nav{
  position:fixed;top:72px;left:0;right:0;bottom:0;z-index:60;
  background:var(--bg);
  display:none;flex-direction:column;
  padding:24px;overflow-y:auto;
  transform:translateX(100%);transition:transform .2s ease;
}
.mobile-nav.open{display:flex;transform:translateX(0)}
.mobile-nav ul{list-style:none;display:flex;flex-direction:column;gap:0;width:100%}
.mobile-nav li{width:100%;border-bottom:1px solid var(--border)}
.mobile-nav a{display:block;padding:16px 4px;color:var(--text)}
.mobile-nav a:hover,
.mobile-nav a[aria-current="page"]{color:var(--primary)}

@media (max-width:860px){
  nav.main-nav{display:none}
  .nav-toggle{display:block}
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--border);
  background:#000 center/cover no-repeat;
}
.hero .wrap{padding-top:96px;padding-bottom:96px;position:relative;z-index:2}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(18,18,18,.92) 0%, rgba(18,18,18,.55) 55%, rgba(18,18,18,.2) 100%);
  z-index:1;
}
.hero h1{font-size:clamp(1.8rem,4vw,2.75rem);color:var(--primary);font-weight:700;letter-spacing:.05em;margin-bottom:16px}
.hero p.lede{font-size:1.1rem;color:var(--text);max-width:640px;margin-bottom:28px}
.page-hero{padding:64px 0 40px;border-bottom:1px solid var(--border)}
.page-hero h1{font-size:clamp(1.6rem,3.4vw,2.2rem);color:var(--primary);font-weight:700}
.page-hero p{color:var(--text);opacity:.85;margin-top:10px;max-width:680px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:999px;
  font-weight:600;font-size:.95rem;cursor:pointer;border:1px solid transparent;
  transition:background .15s,border-color .15s,color .15s;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--secondary)}
.btn-outline{border-color:var(--accent);color:var(--primary)}
.btn-outline:hover{background:var(--accent)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- sections ---------- */
section{padding:64px 0}
section.alt{background:var(--surface)}
h2.section-title{font-size:clamp(1.4rem,2.6vw,1.9rem);color:var(--primary);font-weight:700;margin-bottom:12px}
p.section-lede{opacity:.85;max-width:720px;margin-bottom:36px}

/* ---------- company cards ---------- */
.company-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
@media (max-width:760px){.company-grid{grid-template-columns:1fr}}
.company-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:32px;
}
.company-card h3{color:var(--primary);font-size:1.3rem;font-weight:700;margin-bottom:10px}
.company-card p.tagline{color:var(--accent);font-weight:600;margin-bottom:14px}
.company-card p.desc{opacity:.85;margin-bottom:20px}
.company-card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.company-card li{
  padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:.92rem;
}

/* ---------- photo card grid (services page, matches 2024 screenshot) ---------- */
.photo-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
@media (max-width:640px){.photo-card-grid{grid-template-columns:1fr}}
.photo-card{
  position:relative;min-height:280px;background-size:cover;background-position:center;
  display:flex;align-items:center;padding:0 32px;overflow:hidden;
}
.photo-card::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.35)}
.photo-card span{position:relative;z-index:1;color:#fff;font-size:1.6rem;font-weight:700}
.photo-card.wide{grid-column:1 / -1}

/* ---------- pawbo project: text + photo side by side ---------- */
.pawbo-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:start}
@media (max-width:700px){.pawbo-layout{grid-template-columns:1fr}}

/* ---------- product photo gallery (many small thumbnails) ---------- */
.photo-gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
@media (max-width:760px){.photo-gallery{grid-template-columns:repeat(3,1fr)}}
@media (max-width:460px){.photo-gallery{grid-template-columns:repeat(2,1fr)}}
.photo-gallery-item{
  aspect-ratio:1;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:url('../assets/wood-bg.jpg') center/cover;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.photo-gallery-item img{width:100%;height:100%;object-fit:cover}
.photo-gallery-item img.contain{object-fit:contain}

/* ---------- generic card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.machine-photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:760px){.machine-photo-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.machine-photo-grid{grid-template-columns:1fr}}
.machine-photo-grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.machine-photo-grid.cols-4{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.machine-photo-grid.cols-4{grid-template-columns:repeat(2,1fr)}}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:24px;
}
.card h3{color:var(--primary);font-size:1.05rem;font-weight:700;margin-bottom:8px}
.card p{opacity:.85;font-size:.92rem}
.tag{
  display:inline-block;font-size:.75rem;font-weight:600;color:var(--primary);
  background:var(--secondary);border-radius:999px;padding:4px 12px;margin-bottom:10px;
}

/* ---------- notice / placeholder ---------- */
.notice{
  border:1px dashed rgba(255,255,255,.25);border-radius:var(--radius-md);
  padding:18px 20px;font-size:.9rem;opacity:.85;background:rgba(255,255,255,.03);
}
.notice strong{color:var(--primary)}
.notice + .notice{margin-top:14px}

/* ---------- timeline ---------- */
.timeline{border-left:2px solid var(--border);padding-left:28px;display:flex;flex-direction:column;gap:32px;margin-left:6px}
.timeline-item{position:relative}
.timeline-item::before{
  content:"";position:absolute;left:-34px;top:4px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);border:2px solid var(--bg);
}
.timeline-item .year{color:var(--accent);font-weight:700;font-size:1.1rem;margin-bottom:6px}
.timeline-item p{opacity:.85}

/* ---------- spec table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-md)}
table.spec{width:100%;border-collapse:collapse;min-width:520px}
table.spec th,table.spec td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border);font-size:.92rem}
table.spec th{color:var(--primary);background:var(--surface);white-space:nowrap}
table.spec tr:last-child td{border-bottom:none}
.source-note{font-size:.8rem;opacity:.65;margin-top:14px}

/* ---------- spec grid (matches 2024 site screenshots: borderless label/value blocks) ---------- */
.spec-block{margin-bottom:48px}
.spec-block .kicker{color:var(--accent);font-size:.85rem;font-weight:600;margin-bottom:6px}
.spec-block h3{color:var(--primary);font-size:2rem;font-weight:700;margin-bottom:20px}
.spec-block h3::after{content:"";display:block;width:56px;height:3px;background:var(--primary);margin-top:14px}
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px 24px}
@media (max-width:700px){.spec-grid{grid-template-columns:1fr 1fr}}
.spec-grid dt{font-weight:700;color:var(--primary);font-size:.95rem;margin-bottom:6px}
.spec-grid dd{color:var(--text);opacity:.85;font-size:.95rem}

/* ---------- machine photo panel ---------- */
.machine-photo{
  background:#fff;border-radius:var(--radius-md);overflow:hidden;
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.machine-photo img{max-height:420px;width:auto;margin:0 auto;border-radius:calc(var(--radius-md) - 4px)}
.machine-photo-caption{color:var(--primary);font-weight:700;font-size:1.3rem;margin-bottom:16px}

/* ---------- presentation gallery ---------- */
.slide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
.slide-thumb{
  aspect-ratio:4/3;border:1px solid var(--border);border-radius:var(--radius-md);
  background:var(--surface);background-size:cover;background-position:center;
  position:relative;
  cursor:pointer;color:var(--text);font-size:.8rem;text-align:center;padding:10px;
  transition:border-color .15s,transform .15s;
  overflow:hidden;
}
.slide-thumb:hover{border-color:var(--accent);transform:translateY(-2px)}
.slide-thumb .num{
  position:absolute;bottom:6px;right:8px;color:#fff;font-weight:700;font-size:.85rem;
  background:rgba(0,0,0,.55);border-radius:4px;padding:2px 8px;
}
.slide-thumb:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.lightbox{
  position:fixed;inset:0;background:rgba(0,0,0,.88);
  display:none;align-items:center;justify-content:center;z-index:100;padding:24px;
}
.lightbox.open{display:flex}
.lightbox-inner{
  position:relative;width:100%;max-width:900px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:32px;
}
.lightbox-inner img{max-width:100%;max-height:70vh;border-radius:calc(var(--radius-md) - 4px)}
.lightbox-inner .num{color:var(--accent);font-weight:700;font-size:1.1rem}
.lightbox-close,.lightbox-prev,.lightbox-next{
  position:absolute;background:rgba(255,255,255,.06);border:1px solid var(--border);
  color:var(--primary);border-radius:50%;width:44px;height:44px;font-size:1.1rem;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-close:hover,.lightbox-prev:hover,.lightbox-next:hover{border-color:var(--accent);color:var(--accent)}
.lightbox-close{top:-16px;right:-16px}
.lightbox-prev{left:-16px;top:50%;transform:translateY(-50%)}
.lightbox-next{right:-16px;top:50%;transform:translateY(-50%)}
.lightbox-counter{font-size:.85rem;opacity:.7}
@media (max-width:640px){
  .lightbox-close{top:-52px;right:0}
  .lightbox-prev{left:-4px}
  .lightbox-next{right:-4px}
}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}
.contact-info dt{color:var(--accent);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;margin-top:20px}
.contact-info dt:first-child{margin-top:0}
.contact-info dd{color:var(--primary);font-size:1rem;margin-top:4px}

form.contact-form{display:flex;flex-direction:column;gap:16px}
form.contact-form label{font-size:.85rem;opacity:.85;margin-bottom:6px;display:block}
form.contact-form input,
form.contact-form textarea{
  width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
  color:var(--text);padding:12px 14px;font-family:inherit;font-size:.95rem;
}
form.contact-form input:focus,
form.contact-form textarea:focus{outline:none;border-color:var(--accent)}
form.contact-form textarea{min-height:130px;resize:vertical}
.form-status{font-size:.85rem;min-height:1.2em}

/* ---------- footer ---------- */
footer.site-footer{
  border-top:1px solid var(--border);padding:36px 0;margin-top:auto;
  font-size:.85rem;opacity:.7;
}
footer.site-footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* =========================================================
   Coverflow carousel (vanilla port — drag / keys / momentum)
   ========================================================= */
.cf-root{width:100%;--cf-card:clamp(160px,24vw,320px)}
.cf-frame{
  position:relative;cursor:grab;overflow:hidden;outline:none;
  padding:36px 0;touch-action:pan-y;
  perspective:calc(var(--cf-card) * 3);
}
.cf-frame:active{cursor:grabbing}
.cf-frame:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.cf-track{
  position:relative;height:var(--cf-card);
  transform-style:preserve-3d;user-select:none;
}
.cf-track.video{height:calc(var(--cf-card) * 9 / 16)}
.cf-card{
  position:absolute;left:50%;top:0;width:var(--cf-card);
  overflow:hidden;border-radius:16px;background:#222;
  box-shadow:0 20px 44px rgba(0,0,0,.55);will-change:transform;
}
.cf-card.square{aspect-ratio:1}
.cf-card.video{aspect-ratio:16/9}
.cf-card img{width:100%;height:100%;object-fit:cover;pointer-events:none;user-select:none;display:block}
.cf-card.video img{object-fit:contain;background:#000}
.cf-nav-btn{
  position:absolute;top:50%;transform:translateY(-50%);z-index:200;
  background:rgba(8,8,8,.7);border:1px solid rgba(255,255,255,.16);color:#fff;
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  cursor:pointer;backdrop-filter:blur(4px);font-size:1.3rem;line-height:1;
  transition:border-color .15s,color .15s;
}
.cf-nav-btn:hover,
.cf-nav-btn:focus-visible{border-color:var(--accent);color:var(--accent);outline:none}
.cf-prev{left:8px}
.cf-next{right:8px}
.cf-caption{text-align:center;color:var(--primary);font-weight:600;font-size:.95rem;margin-top:4px}
.cf-pagination{margin-top:20px;display:flex;justify-content:center;flex-wrap:wrap;gap:8px}
.cf-dot{width:8px;height:8px;border-radius:50%;background:#fff;opacity:.3;border:none;cursor:pointer;padding:0}
.cf-dot.active{opacity:1;background:var(--accent)}

/* ---------- homepage landing hero (coverflow) ---------- */
.hero-cf{
  min-height:100svh;background:#080808;display:flex;flex-direction:column;
  border-bottom:1px solid var(--border);
}
.hero-cf-inner{
  flex:1;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  max-width:var(--max-w);margin:0 auto;padding:48px 24px;width:100%;
}
@media (max-width:860px){
  .hero-cf-inner{grid-template-columns:1fr;gap:28px;padding:32px 20px}
}
.hero-cf-text h1{
  font-size:clamp(1.6rem,3.4vw,2.6rem);color:#fff;font-weight:700;
  line-height:1.45;margin-bottom:16px;letter-spacing:.02em;
}
.hero-cf-text .hero-cf-en{color:#b7b9c4;font-size:1rem;line-height:1.7;max-width:480px;margin-bottom:24px}

/* simple text-only hero variant (no coverflow) */
.hero-cf-simple{min-height:70svh}
.hero-cf-inner-simple{
  grid-template-columns:1fr;justify-items:center;text-align:center;
}
.hero-cf-inner-simple .hero-cf-text{max-width:640px}
.hero-cf-inner-simple .hero-cf-en{margin-left:auto;margin-right:auto}
.hero-cf-inner-simple .btn-row{justify-content:center}
.hero-scroll-hint{
  text-align:center;color:#8a8d9c;font-size:.78rem;padding-bottom:22px;
  animation:cf-bounce 2.2s ease-in-out infinite;
}
@keyframes cf-bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
@media (prefers-reduced-motion:reduce){
  .hero-scroll-hint{animation:none}
}

/* ---------- glass panels (contact page) ---------- */
.glass-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
@media (max-width:900px){
  .glass-grid{grid-template-columns:1fr 1fr}
  .glass-grid .glass-panel:first-child{grid-column:1 / -1}
}
@media (max-width:640px){
  .glass-grid{grid-template-columns:1fr}
  .glass-grid .glass-panel:first-child{grid-column:auto}
}
.glass-panel{
  background:rgba(34,34,34,.82);border:1px solid rgba(255,255,255,.12);
  border-radius:16px;padding:28px;backdrop-filter:blur(10px);
}
.glass-panel h3{color:#fff;font-size:1.15rem;font-weight:700;margin-bottom:4px}
.glass-panel dt{color:var(--accent);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;margin-top:16px}
.glass-panel dt:first-child{margin-top:0}
.glass-panel dd{color:#fff;font-size:.98rem;margin-top:4px;overflow-wrap:anywhere}
.glass-panel a:hover,
.glass-panel a:focus-visible{color:var(--accent)}
.glass-panel a:focus-visible{outline:none;text-decoration:underline}
.glass-form{width:100%}
.glass-form form.contact-form{max-width:640px}