html{-webkit-text-size-adjust:100%}
body{margin:0}
img{max-width:100%}

/* Layout: logo bar and blue page nav on top; pale-blue banner per page; product cards colour-coded by line (blue core, red Forte, Perio magenta/teal/peach); blue footer. Single light brand theme by design. */
:root{
  --blue:#1162a5; --blue-d:#0c4a80; --navy:#0a2f55; --sky:#eaf3fb; --sky2:#d3e6f6;
  --bg:#ffffff; --surface:#f5f9fd; --ink:#14273d; --muted:#51647a; --line:#d6e2ee;
  --red:#d8232f; --orange:#f28c28; --magenta:#8c0f57; --teal:#2fa592; --peach:#e59a70;
  --display:"Plus Jakarta Sans","Trebuchet MS",system-ui,sans-serif;
  --body:"Source Sans 3","Segoe UI",system-ui,sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1.0625rem;line-height:1.6}
a{color:var(--blue)}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
h1,h2,h3{font-family:var(--display);text-wrap:balance;line-height:1.15;margin:0;color:var(--navy)}
h1{font-size:clamp(2rem,5vw,3.1rem);font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3.4vw,2rem);font-weight:800;letter-spacing:-.01em}
h3{font-size:1.15rem;font-weight:700}
p{margin:0}
ul{margin:0;padding-left:1.1em}
.wrap{max-width:70rem;margin-inline:auto;padding-inline:20px}

header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);box-shadow:0 1px 0 var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:.75rem}
.brand{display:flex;align-items:flex-end;gap:.6rem;text-decoration:none}
.brand img{height:38px;width:auto;display:block}
.brand small{font-weight:700;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red);padding-bottom:1px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang a{text-decoration:none;font:700 .82rem var(--body);background:none;border:0;color:var(--muted);padding:.35rem .75rem;cursor:pointer}
.lang a[aria-current="true"]{background:var(--blue);color:#fff}
.navscroll{overflow-x:auto;background:var(--blue)}
nav.main{display:flex;gap:.15rem;padding-block:.4rem;white-space:nowrap}
nav.main a{color:#fff;text-decoration:none;font-weight:600;font-size:.95rem;padding:.4rem .8rem;border-radius:999px}
nav.main a:hover{background:var(--blue-d)}
nav.main a.on{background:#fff;color:var(--blue)}

.view{padding-block:0 4.5rem}
.stack{display:flex;flex-direction:column;gap:1.1rem}
.section{display:flex;flex-direction:column;gap:1.5rem;margin-top:3.75rem}
.lead{font-size:1.2rem;color:var(--muted);max-width:40rem}
.prose{max-width:42rem}
.eyebrow{font-weight:700;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.btn{display:inline-block;background:var(--blue);color:#fff;font-weight:700;text-decoration:none;padding:.75rem 1.4rem;border-radius:999px}
.btn:hover{background:var(--blue-d)}
.btn.ghost{background:#fff;color:var(--blue);box-shadow:inset 0 0 0 2px var(--blue)}
.row{display:flex;flex-wrap:wrap;gap:.75rem}

.pagehead{background:var(--sky);box-shadow:0 0 0 100vmax var(--sky);clip-path:inset(0 -100vmax);padding-block:2.75rem;margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.9rem}

.herob{background:linear-gradient(160deg,var(--sky) 0%,#fff 55%,var(--sky2) 100%);overflow:hidden}
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:2rem;align-items:center;padding-block:3.5rem}
.hero>*{min-width:0}
.heroart{position:relative;display:flex;justify-content:center;align-items:flex-end;gap:2%;min-height:320px}
.heroart .swirl{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);height:125%;width:auto;opacity:.5}
.heroart img{position:relative;flex:0 0 auto;width:21%;height:auto;max-height:300px;object-fit:contain;object-position:bottom;filter:drop-shadow(0 10px 14px rgba(10,47,85,.18))}
.heroart img.sm{width:19%}
.heroart img.wide{width:31%}

.three{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.three>div{display:flex;flex-direction:column;gap:.45rem;min-width:0}
.acts>div{background:var(--surface);border-radius:18px;padding:1.5rem}
.acts svg{width:46px;height:46px;margin-bottom:.4rem}
.chooser>div{border-top:4px solid var(--lc,var(--blue));padding-top:.9rem}

.l-classic{--lc:var(--blue)} .l-forte{--lc:var(--red)} .l-int{--lc:var(--magenta)} .l-long{--lc:var(--teal)} .l-gentle{--lc:var(--peach)} .l-perio{--lc:var(--magenta)}
.lh{display:flex;align-items:center;gap:.7rem}
.lh::before{content:"";width:.7rem;height:1.6rem;border-radius:4px;background:var(--lc,var(--blue))}
.rgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(8.5rem,1fr));gap:1rem}
.rgrid a{display:flex;flex-direction:column;align-items:center;gap:.6rem;text-align:center;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem;line-height:1.3;background:color-mix(in srgb,var(--lc,var(--blue)) 7%,#fff);border-radius:16px;padding:1rem .75rem;min-width:0}
.rgrid a:hover{box-shadow:inset 0 0 0 2px var(--lc,var(--blue))}
.rgrid img{height:120px;width:auto;max-width:100%;object-fit:contain}
.cta{background:var(--blue);color:#fff;border-radius:22px;padding:2rem;display:flex;flex-wrap:wrap;gap:1.25rem;align-items:center;justify-content:space-between}
.cta p{font-family:var(--display);font-weight:700;font-size:1.25rem;max-width:34rem}
.cta .btn{background:#fff;color:var(--blue)}

.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem}
.card{background:#fff;border:1px solid var(--line);border-top:4px solid var(--lc,var(--blue));border-radius:18px;padding:1.4rem;display:flex;flex-direction:column;gap:.9rem;min-width:0;box-shadow:0 6px 18px rgba(10,47,85,.05)}
.card .meta{color:var(--muted);font-size:.95rem;font-variant-numeric:tabular-nums}
.card h4{margin:0;font:700 .78rem var(--body);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.scale{display:flex;align-items:center;gap:.7rem}
.track{flex:1;height:8px;border-radius:999px;background:var(--sky2);overflow:hidden}
.fill{height:100%;background:var(--lc,var(--blue));border-radius:999px;min-width:4px}
.scale b{font-variant-numeric:tabular-nums;min-width:3.6rem;text-align:right}
.num td{font-variant-numeric:tabular-nums}
.note{background:var(--sky);border-left:4px solid var(--blue);border-radius:10px;padding:1rem 1.2rem;max-width:46rem}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0}
.tags li{background:var(--sky);color:var(--navy);border-radius:999px;padding:.3rem .9rem;font-size:.95rem;font-weight:600}
details{border-bottom:1px solid var(--line);padding-block:1rem;max-width:46rem}
summary{font-family:var(--display);font-weight:700;font-size:1.1rem;cursor:pointer;color:var(--navy)}
details p{margin-top:.6rem;color:var(--muted)}
.tablebox{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:30rem}
th,td{text-align:left;padding:.7rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:#fff;background:var(--blue)}
tbody tr:nth-child(even){background:var(--surface)}
.refs{display:flex;flex-direction:column;gap:1rem;max-width:46rem}
.refs cite{display:block;color:var(--muted);font-size:.95rem;font-style:normal}
.tri{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;align-items:start}
.plist{list-style:none;padding:0;display:flex;flex-direction:column}
.plist li{display:flex;justify-content:space-between;gap:1rem;padding-block:.55rem;border-top:1px solid var(--line)}
.plist li>span:first-child{min-width:0}
.plist .sub{color:var(--muted);font-size:.9rem}
.plist .sz{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}
.dlist{list-style:none;padding:0;columns:2 16rem;column-gap:2rem;max-width:54rem}
.dlist li{break-inside:avoid;padding-block:.35rem;border-bottom:1px solid var(--line)}
.dlist a::after{content:" (PDF)";color:var(--muted);font-size:.9em}
.pimg{background:color-mix(in srgb,var(--lc,var(--blue)) 7%,#fff);border-radius:12px;padding:1rem;display:flex;justify-content:center;align-items:flex-end;gap:1rem}
.pimg img{height:200px;width:auto;max-width:100%;object-fit:contain}
.pimg.multi img{height:140px;min-width:0;flex:0 1 auto}

footer{background:var(--navy);color:#c9d9ea;padding-block:2.5rem 3rem;font-size:.95rem}
footer .wrap{display:grid;grid-template-columns:1.6fr 1fr;gap:2rem}
footer .wrap>*{min-width:0}
footer .fcol{display:flex;flex-direction:column;gap:.6rem}
footer img{height:34px;width:auto;align-self:flex-start;margin-bottom:.4rem}
footer a{color:#fff;text-decoration:none;font-weight:600}
footer a:hover{text-decoration:underline}
footer nav{display:flex;flex-direction:column;gap:.45rem;align-items:flex-start}
@media (max-width:900px){.tri{grid-template-columns:1fr}}
@media (max-width:760px){
  .hero,.three,.cards,footer .wrap{grid-template-columns:1fr}
  .hero{padding-block:2.25rem}
  .heroart{min-height:0}
  .heroart img{max-height:210px}
  .brand img{height:30px}
}
.card:has(>.cimg){overflow:hidden}
.cimg{display:block;width:calc(100% + 2.8rem);max-width:none;height:auto;aspect-ratio:16/9;object-fit:cover;margin:-1.4rem -1.4rem .2rem}
.split{display:grid;grid-template-columns:1.2fr 1fr;gap:2.5rem;align-items:center}
.split>*{min-width:0}
.fig{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:1.25rem;box-shadow:0 6px 18px rgba(10,47,85,.05)}
.fig img{display:block;width:100%;height:auto}
.fig figcaption{margin-top:.8rem;color:var(--muted);font-size:.95rem;text-align:center}
@media (max-width:760px){.split{grid-template-columns:1fr}}
.split.rev{grid-template-columns:1fr 1.5fr}
.fig.round{border:0;box-shadow:none;background:none;padding:0;max-width:340px;justify-self:center;filter:drop-shadow(0 12px 22px rgba(10,47,85,.16))}
.props{display:flex;flex-direction:column;gap:1.1rem}
.props>div{border-left:4px solid var(--blue);padding-left:1rem;display:flex;flex-direction:column;gap:.25rem}
@media (max-width:760px){.split.rev{grid-template-columns:1fr}.fig.round{max-width:260px}}