/* Concept 03 — Technical Clarity. Full-bleed photo hero under an angled navy panel; every section is an
   edge-to-edge gapless grid of text tiles and photo tiles. Viko palette: navy, white, Viko red.
   No labels, numbers or decoration. Isolated: technical.html only. System fonts, no CDNs. */
:root{
  --navy:#0e2a3a;--navy-2:#0a2130;--red:#e5352c;--red-2:#c92b23;--light:#f3f5f7;
  --ink:#0e2a3a;--ink-2:#45606e;--on-dark:#d3dee4;
  --font:"PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
  --gut:64px;--s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:72px;
  --ease:cubic-bezier(.2,.7,.2,1);--dur:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--navy-2);color:var(--ink);font:400 17px/1.85 var(--font);-webkit-font-smoothing:antialiased;overflow-x:clip}
img{display:block;width:100%;height:100%;object-fit:cover}
figure{margin:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,p,dl,dd{margin:0}
ul{margin:0;padding:0;list-style:none}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:99;background:#fff;padding:8px 12px}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}

/* Opening film */
.opening{position:relative;height:100svh;background:var(--navy-2)}
.opening video{width:100%;height:100%;object-fit:contain}
.enter{position:absolute;right:var(--gut);bottom:var(--s5);width:48px;height:48px;display:grid;place-items:center;background:var(--red);color:#fff;border-radius:50%;font-size:20px;transition:transform var(--dur) var(--ease)}
.enter:hover{transform:translateY(3px)}

/* Header floats over the hero, turns solid navy once past it */
.hdr{position:sticky;top:0;z-index:10;margin-bottom:-88px;color:#fff;transition:background .3s var(--ease)}
.hdr.scrolled{background:var(--navy)}
.hdr .g{display:flex;align-items:center;justify-content:space-between;height:88px;padding:0 var(--gut)}
.logo img{width:110px;height:48px;object-fit:contain;filter:brightness(0) invert(1)}
.hdr nav{display:flex;align-items:center;gap:var(--s4);font-size:15px;font-weight:500;letter-spacing:.04em}
.hdr nav a{position:relative;padding:var(--s1) 0}
.hdr nav a:not(.cta)::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.hdr nav a:not(.cta):hover::after{transform:scaleX(1)}
.hdr nav .cta{background:var(--red);padding:12px 24px;transition:background var(--dur)}
.hdr nav .cta:hover{background:var(--red-2)}

/* Hero: full photo, angled navy panel */
.hero{position:relative;min-height:max(100svh,720px);display:flex;overflow:hidden;background:var(--navy)}
.hero>img{position:absolute;inset:0;animation:kb 14s var(--ease) both}
@keyframes kb{from{transform:scale(1.15)}to{transform:scale(1)}}
.panel{position:relative;z-index:1;width:62%;background:var(--navy);clip-path:polygon(0 0,100% 0,62% 100%,0 100%);display:flex;align-items:center;animation:slide 1s var(--ease) both}
@keyframes slide{from{clip-path:polygon(0 0,0 0,0 100%,0 100%)}}
.hero-copy{padding:140px 0 var(--s6) var(--gut);max-width:640px;color:#fff}
.hero h1{font-size:clamp(40px,4.4vw,68px);line-height:1.18;font-weight:700;letter-spacing:.01em}
.hero h1 span{display:block}
.hero h1 span:first-child{color:var(--red)}
.lead{color:var(--on-dark);margin:var(--s4) 0 var(--s5);max-width:26em}
.hero-copy>*{animation:rise .9s var(--ease) both}
.hero-copy>:nth-child(1){animation-delay:.35s}.hero-copy>:nth-child(2){animation-delay:.5s}.hero-copy>:nth-child(3){animation-delay:.65s}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* Gapless tiles */
.tiles{display:grid;gap:0}
.tile{padding:var(--s6) var(--gut);display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.tile h2{font-size:clamp(28px,2.6vw,40px);line-height:1.3;font-weight:700}
.tile h3{font-size:22px;font-weight:700;margin-bottom:var(--s2)}
.tile p{margin-top:var(--s3)}
.tile h3+p{margin-top:0}
.dark{background:var(--navy);color:#fff}.dark p{color:var(--on-dark)}
.light{background:#fff;color:var(--ink)}.light p{color:var(--ink-2)}
.red{background:var(--red);color:#fff}
.ph{overflow:hidden;min-height:420px;background:var(--navy)}
.ph img,.eq img{transition:transform 1s var(--ease)}
.ph:hover img,.eq li:hover img{transform:scale(1.06)}
.acts{display:flex;flex-wrap:wrap;gap:var(--s2);margin-top:var(--s5)}

.t-products{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,1fr);min-height:600px}
.t-cap-head{grid-template-columns:repeat(3,minmax(0,1fr))}
.t-cap-head .red .btn{margin-top:var(--s5)}
.eq{display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}
.eq li{aspect-ratio:1;overflow:hidden;position:relative}
.eq li::after{content:"";position:absolute;inset:0;background:var(--navy);opacity:.15;transition:opacity .4s}
.eq li:hover::after{opacity:0}
.t-about{grid-template-columns:minmax(0,2fr) minmax(0,1fr);min-height:640px}
.t-support{grid-template-columns:minmax(0,1fr) minmax(0,2fr);min-height:640px}
.t-about .light{background:var(--light)}

/* Buttons: square, 48px; outline on dark fills red */
.btn{display:inline-flex;align-items:center;gap:var(--s2);height:48px;padding:0 var(--s3);border:1px solid currentColor;font-size:15px;font-weight:500;letter-spacing:.04em;position:relative;isolation:isolate;overflow:hidden;transition:color .3s var(--ease),border-color .3s var(--ease)}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--red);transform:translateX(-101%);transition:transform .4s var(--ease)}
.btn:hover{border-color:var(--red);color:#fff}.btn:hover::before{transform:none}
.btn span{transition:transform var(--dur) var(--ease)}.btn:hover span{transform:translateX(4px)}
.btn-primary{background:var(--red);border-color:var(--red);color:#fff}
.btn-primary::before{background:#fff}
.btn-primary:hover{color:var(--red);border-color:#fff}
.btn-light{color:#fff;border-color:#fff}
.btn-light::before{background:#fff}.btn-light:hover{color:var(--red);border-color:#fff}
.btn-dark{color:var(--ink)}

/* Footer */
.ftr{background:var(--navy-2);color:#fff;padding:var(--s6) var(--gut)}
.ft-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:var(--s5);align-items:start}
.ft-id img{width:180px;height:72px;object-fit:contain;object-position:left;filter:brightness(0) invert(1)}
.ft-id h2{font-size:24px;font-weight:700;margin-top:var(--s3)}
.ftr dl{display:grid;grid-template-columns:72px 1fr;font-size:16px}
.ftr dt,.ftr dd{padding:var(--s1) 0;border-bottom:1px solid #ffffff1f}
.ftr dt{color:#9fb3bf}

/* Scroll motion */
.js .rv{opacity:0;transform:translateY(32px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .rv.in{opacity:1;transform:none}
.js .ph img{transform:scale(1.2)}.js .ph.in img{transform:scale(1)}.js .ph.in:hover img{transform:scale(1.06)}
.js .eq li{opacity:0;transition:opacity .6s var(--ease);transition-delay:calc(var(--i) * 60ms)}
.js .eq.in li{opacity:1}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.js .rv,.js .eq li{opacity:1;transform:none}.js .ph img{transform:none}}

/* Phone menu (button injected by build.py) */
.menu-btn{display:none}
@media (max-width:1100px){
  :root{--gut:32px}
  .hdr nav{gap:var(--s3)}
  .panel{width:78%}
  .t-products{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .t-products .tile{grid-column:1/-1}
  .eq{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:760px){
  :root{--gut:20px;--s6:48px}
  body{font-size:16px}
  .hdr{margin-bottom:-64px}
  .hdr .g{height:64px}
  .logo img{width:84px;height:36px}
  .menu-btn{display:grid;gap:5px;place-content:center;width:44px;height:44px;margin-left:auto;background:none;border:0;cursor:pointer}
  .menu-btn i{display:block;width:22px;height:2px;background:#fff;transition:transform var(--dur),opacity var(--dur)}
  .menu-btn[aria-expanded=true] i:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-btn[aria-expanded=true] i:nth-child(2){opacity:0}
  .menu-btn[aria-expanded=true] i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hdr nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--navy);border-bottom:3px solid var(--red);max-height:0;overflow:hidden;visibility:hidden;transition:max-height .35s var(--ease),visibility .35s}
  .hdr nav.open{max-height:440px;visibility:visible}
  .hdr nav a{padding:var(--s2) var(--gut)!important;border-top:1px solid #ffffff1f;font-size:17px}
  .hdr nav .cta{background:var(--red)}
  .hero{flex-direction:column;min-height:0}
  .hero>img{position:relative;height:56vw;min-height:240px}
  .panel{width:100%;clip-path:polygon(0 32px,100% 0,100% 100%,0 100%);margin-top:-32px;animation:none}
  .hero-copy{padding:var(--s5) var(--gut) var(--s6)}
  .tiles,.t-products,.t-cap-head,.t-about,.t-support{grid-template-columns:minmax(0,1fr);min-height:0}
  .ph{min-height:0;aspect-ratio:4/3}
  .t-support .tile{order:1}
  .eq{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ft-in{grid-template-columns:minmax(0,1fr)}
  .enter{bottom:var(--s3)}
}
/* fixes: logo has a white background, keep it as a small white plate; cap hero height */
.logo{display:block;background:#fff;padding:6px 12px}
.logo img{filter:none;width:96px;height:40px}
.ft-id img{filter:none;background:#fff;padding:8px 14px;width:200px}
.hero{min-height:clamp(640px,100svh,940px)}
.hero>img{object-position:72% 30%}
@media (max-width:760px){.logo img{width:72px;height:30px}.logo{padding:4px 8px}}
@media (min-width:761px){.hero>img{left:auto;right:0;width:68%;object-position:left 20%}}
/* Colour plan: products + about red; capability + support navy; hero, header, footer white */
.red p{color:#fff}
.red .btn:not(.btn-primary)::before{background:#fff}
.red .btn:not(.btn-primary):hover{color:var(--red);border-color:#fff}
.btn-onred{background:#fff;border-color:#fff;color:var(--red)}
.btn-onred::before{background:var(--navy)}
.btn-onred:hover{color:#fff;border-color:var(--navy)}
.t-cap-head .dark+.dark{border-left:1px solid #ffffff1f}
.t-cap-head{background:var(--navy)}
.t-cap-head .tile:first-child{background:var(--navy-2)}
.t-about .tile{background:var(--red)}
/* White header */
.hdr{color:var(--ink)}
.hdr,.hdr.scrolled{background:#fff;border-bottom:1px solid #0e2a3a1a}
.hdr{margin-bottom:0}
.logo{background:none;padding:0}
.logo img{width:110px;height:48px}
/* White hero panel */
.hero{background:#fff}
.panel{background:#fff}
.hero-copy{color:var(--ink);padding-top:var(--s6)}
.lead{color:var(--ink-2)}
.hero{min-height:clamp(600px,calc(100svh - 88px),860px)}
/* White footer */
.ftr{background:#fff;color:var(--ink);border-top:4px solid var(--red)}
.ft-id img{background:none;padding:0}
.ftr dt{color:#6b808b}
.ftr dt,.ftr dd{border-bottom-color:#0e2a3a1a}
@media (max-width:760px){
  .hdr{margin-bottom:0}
  .menu-btn i{background:var(--ink)}
  .hdr nav{background:#fff}
  .hdr nav a{border-top-color:#0e2a3a1a}
  .hdr nav .cta{color:#fff}
  .logo img{width:84px;height:36px}
  .t-cap-head .dark+.dark{border-left:0;border-top:1px solid #ffffff1f}
}
.t-cap-head .tile:first-child .btn{margin-top:var(--s5)}
/* Secondary buttons: "hug" — a white tile beside the label grows to fill the button on hover */
.btn:not(.btn-primary){--h:52px;height:var(--h);border:0!important;padding:0 var(--s3) 0 calc(var(--h) / 1.4 + var(--s3));overflow:visible;color:#fff;font-weight:600}
.btn:not(.btn-primary)::before{inset:auto;left:0;top:50%;width:calc(var(--h) / 1.4);height:calc(var(--h) / 1.4);transform:translateY(-50%)!important;background:#fff!important;border-radius:12px;transition:left .25s var(--ease),width .25s var(--ease),height .25s var(--ease),border-radius .25s var(--ease)}
.btn:not(.btn-primary):hover::before{width:100%;height:100%;border-radius:999px}
.btn:not(.btn-primary):hover{color:var(--navy)!important}
.red .btn:not(.btn-primary):hover{color:var(--red)!important}
.btn:not(.btn-primary) span{transition:transform .25s var(--ease)}
/* Secondary buttons: slanted switch — a skewed tinted plate, a slanted white fill sweeps across on hover.
   No stroke, no rounded corners (replaces the hug style). */
.btn:not(.btn-primary){--h:52px;height:var(--h);padding:0 calc(var(--s4) + 4px);border:0!important;overflow:hidden;color:#fff;font-weight:600;background:none;isolation:isolate;clip-path:polygon(14px 0,100% 0,calc(100% - 14px) 100%,0 100%)}
.btn:not(.btn-primary)::after{content:"";position:absolute;inset:0;z-index:-2;background:#ffffff26;transition:background .3s var(--ease)}
.btn:not(.btn-primary)::before{inset:0 -20px!important;left:-20px!important;top:0!important;width:auto!important;height:100%!important;border-radius:0!important;background:#fff!important;transform:skewX(-20deg) translateX(-105%)!important;transition:transform .45s var(--ease)!important}
.btn:not(.btn-primary):hover::before{transform:skewX(-20deg) translateX(0)!important}
.light .btn:not(.btn-primary)::after{background:#0e2a3a14}
/* Slanted buttons in solid Viko colours: red on navy, navy on red; single-line labels */
.btn{white-space:nowrap}
.dark .btn:not(.btn-primary)::after{background:var(--red)}
.red .btn:not(.btn-primary)::after{background:var(--navy)}
.dark .btn:not(.btn-primary):hover{color:var(--red)!important}
.red .btn:not(.btn-primary):hover{color:var(--navy)!important}
/* Slanted buttons match their section: a deeper red on red, a deeper navy on navy */
.red .btn:not(.btn-primary)::after{background:var(--red-2)}
.dark .btn:not(.btn-primary)::after{background:var(--navy-2)}
.t-cap-head .tile:first-child .btn:not(.btn-primary)::after{background:#06161f}
.red .btn:not(.btn-primary):hover{color:var(--red)!important}
.dark .btn:not(.btn-primary):hover{color:var(--navy)!important}
/* ---- Critique fixes ---- */
/* Buttons: exactly the section colour */
.red .btn:not(.btn-primary)::after{background:var(--red)}
.dark .btn:not(.btn-primary)::after{background:var(--navy)}
.t-cap-head .tile:first-child .btn:not(.btn-primary)::after{background:var(--navy-2)}
/* 1. Hero copy fills the panel */
.hero h1{font-size:clamp(48px,5.4vw,84px);line-height:1.12}
.hero-copy{max-width:720px}
.lead{font-size:19px;max-width:28em}
/* 2. Products: wider text tile, buttons side by side */
.t-products{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr) minmax(0,1fr)}
.t-products .acts{flex-wrap:nowrap}
/* 3. Capability row balanced */
.t-cap-head{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr)}
.t-cap-head h3{font-size:24px}
/* 4. Larger tile copy */
.tile p{font-size:18px;line-height:1.9}
.tile h2{font-size:clamp(30px,2.8vw,44px)}
/* 5. About photo shows the factory sign */
.t-about .ph img{object-position:20% center}
/* 8. Square opening arrow */
.enter{border-radius:0;clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);width:56px}
@media (max-width:1100px){.t-products .acts{flex-wrap:wrap}}
@media (max-width:760px){
  .hero h1{font-size:clamp(34px,9vw,44px)}
  .lead{font-size:17px}
  .tile p{font-size:16px}
  /* 6. Products photos side by side on phones */
  .t-products{grid-template-columns:repeat(2,minmax(0,1fr))}
  .t-products .tile{grid-column:1/-1}
  .t-products .ph{aspect-ratio:1}
  .t-cap-head{grid-template-columns:minmax(0,1fr)}
  /* 7. Tighter footer */
  .ftr{padding:var(--s5) var(--gut)}
  .ft-in{gap:var(--s3)}
  .ft-id{display:flex;align-items:center;gap:var(--s2)}
  .ft-id img{width:96px;height:42px}
  .ft-id h2{margin-top:0;font-size:19px}
  .ftr dl{font-size:15px;grid-template-columns:56px 1fr}
}
.btn,.btn:not(.btn-primary){height:52px;--h:52px;line-height:1}.acts{align-items:center}
.acts>.btn:not(.btn-primary):first-child,.tile>.btn:not(.btn-primary){margin-left:calc((var(--s4) + 4px) * -1)}
.acts>.btn:not(.btn-primary):first-child,.tile>.btn:not(.btn-primary){margin-left:calc(var(--gut) * -1);padding-left:var(--gut);clip-path:polygon(0 0,100% 0,calc(100% - 18px) 100%,0 100%)}
.t-products .acts{gap:0}.t-products .acts>.btn:not(.btn-primary){clip-path:polygon(0 0,100% 0,calc(100% - 18px) 100%,0 100%);padding-left:var(--s4)}
.hdr nav .cta{color:#fff}
/* Hero white panel: faint diagonal stripes parallel to the panel's angled edge, fading out behind the copy */
.panel::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(111deg,transparent 0 22px,#0e2a3a14 22px 23px);
  -webkit-mask-image:linear-gradient(90deg,transparent 35%,#000 80%);mask-image:linear-gradient(90deg,transparent 35%,#000 80%)}
.hero-copy{position:relative}
@media (max-width:760px){.panel::before{-webkit-mask-image:linear-gradient(180deg,#000,transparent 40%);mask-image:linear-gradient(180deg,#000,transparent 40%)}}
/* Solid buttons: same slanted shape as the rest */
.btn-primary{clip-path:polygon(14px 0,100% 0,calc(100% - 14px) 100%,0 100%);padding:0 calc(var(--s4) + 4px)}
.t-products .acts>.btn:not(.btn-primary){clip-path:polygon(14px 0,100% 0,calc(100% - 18px) 100%,0 100%);margin-left:-10px;padding-left:calc(var(--s4) + 6px)}
.hero-copy>.btn-primary,.acts>.btn-primary:first-child{margin-left:calc(var(--gut) * -1);padding-left:var(--gut);clip-path:polygon(0 0,100% 0,calc(100% - 18px) 100%,0 100%)}
.t-products .acts>.btn:not(.btn-primary){clip-path:polygon(18px 0,100% 0,calc(100% - 18px) 100%,0 100%);margin-left:-12px}
@media (max-width:760px){.tile h2{font-size:clamp(20px,6.8vw,30px);line-height:1.35}}

/* Balanced line breaks: no single-character last lines */
h1,h2,h3{text-wrap:balance}p,dd{text-wrap:pretty}
@media (max-width:1100px){.t-products .acts{flex-direction:column;align-items:flex-start;gap:var(--s2)}.t-products .acts>.btn:not(.btn-primary){margin-left:calc(var(--gut) * -1);padding-left:var(--gut);clip-path:polygon(0 0,100% 0,calc(100% - 18px) 100%,0 100%)}}
/* One rhythm: gap above buttons = gap between paragraphs */
.acts,.t-cap-head .tile:first-child .btn{margin-top:var(--s3)!important}
.lead{margin-bottom:var(--s3)}
/* Hero photo: injection-moulding floor */
@media (min-width:761px){.hero>img{object-position:60% center}}
.totop{clip-path:polygon(8px 0,100% 0,calc(100% - 8px) 100%,0 100%);width:60px!important}.totop:hover{background:#0e2a3a}
/* Key figures: gapless row of three tiles after About */
.kf-row{background:#fff}
.kf{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.kf-i{margin:0;padding:var(--s6) var(--gut);display:flex;flex-wrap:wrap;align-items:baseline;gap:0 8px;color:var(--ink-2);font-size:18px}
.kf-i+.kf-i{border-left:1px solid #0e2a3a1a}
.kf-pre{flex-basis:100%;margin-bottom:var(--s2);font-weight:600;color:var(--ink)}
.kf-n{font-size:clamp(56px,6vw,96px);line-height:.95;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.kf-u{font-weight:600;color:var(--ink)}
@media (max-width:760px){.kf{grid-template-columns:minmax(0,1fr)}.kf-i{padding:var(--s4) var(--gut)}.kf-i+.kf-i{border-left:0;border-top:1px solid #0e2a3a1a}}
.kf-n{font-size:clamp(48px,4.6vw,76px)}.kf-i{flex-wrap:nowrap;flex-direction:row}.kf-i{display:grid;grid-template-columns:auto 1fr;align-items:baseline;column-gap:8px}.kf-pre{grid-column:1/-1}