/* Knee Clinic Stellenbosch — Dr Spike Erasmus · KliekNet 2026 */
@font-face{font-family:"DM Serif Display";src:url(../fonts/dmserif.woff2) format("woff2");font-display:swap}
@font-face{font-family:"DM Serif Display";src:url(../fonts/dmserif-italic.woff2) format("woff2");font-style:italic;font-display:swap}
@font-face{font-family:"DM Sans";src:url(../fonts/dmsans.woff2) format("woff2");font-weight:400 700;font-display:swap}

:root{
  --ink:#1C2127;--text:#4A525C;--muted:#7A828C;
  --blue:#478BCA;--blue-d:#3574AF;--blue-l:#8DBCE6;--blue-bg:#F1F5FA;
  --grey:#A7A9AC;--line:#E7E9EC;--bg:#F7F7F6;--white:#fff;
  --serif:"DM Serif Display",Georgia,serif;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:400 15.5px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;font-family:var(--serif);font-weight:400;color:var(--ink);letter-spacing:-.015em;line-height:1.05}
em{font-style:italic;color:var(--blue)}
p{margin:0}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-999px;top:10px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:6px;z-index:99}
.skip:focus{left:12px}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.label{font:600 .7rem/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--blue);margin-bottom:16px;display:block}
.btn{white-space:nowrap;display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border-radius:6px;font:600 .86rem/1 var(--sans);transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--blue)}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-light:hover{border-color:var(--ink)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}
.ctas{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,247,246,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo img{height:40px;width:auto}
.nav{display:flex;gap:34px}
.nav a{font-size:.86rem;color:var(--text);position:relative}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1.5px;background:var(--blue)}
.site-header .btn{height:38px;padding:0 16px;font-size:.82rem}
.menu-btn{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:6px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.menu-btn svg{width:18px;height:18px}

/* hero */
.hero{position:relative;min-height:calc(100vh - 72px);max-height:860px;display:flex;align-items:center;overflow:hidden}
.dots{position:absolute;inset:0 0 0 38%;background-image:radial-gradient(#C9CDD2 1px,transparent 1.3px);background-size:26px 26px;mask-image:linear-gradient(90deg,transparent,#000 35%);-webkit-mask-image:linear-gradient(90deg,transparent,#000 35%);pointer-events:none}
.hero .wrap{position:relative;width:100%;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:40px;padding-top:40px;padding-bottom:40px}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:.74rem;color:var(--text);margin-bottom:30px}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--blue);flex:none}
.pill b{color:var(--ink);font-weight:600}
.hero h1{font-size:clamp(3rem,6vw,5.2rem)}
.hero h1 em{display:block}
.who{margin:26px 0 14px;font-size:.86rem;color:var(--ink);font-weight:600}
.who span{color:var(--muted);font-weight:400}
.hero .lead{max-width:470px}
.hero-art{justify-self:center;position:relative}
.hero-art img{height:min(70vh,600px);width:auto}
.tag{position:absolute;right:-8px;top:22%;background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 14px;font-size:.74rem;line-height:1.35;box-shadow:0 12px 30px -18px rgba(0,0,0,.25)}
.tag b{display:block;font:400 1.3rem/1 var(--serif);color:var(--ink);margin-bottom:2px}
.tag.t2{right:auto;left:-30px;top:auto;bottom:18%}

/* page head (inner pages) */
.page-head{position:relative;overflow:hidden;padding:100px 0 72px;border-bottom:1px solid var(--line)}
.page-head .dots{inset:0 0 0 45%}
.page-head .wrap{position:relative}
.page-head h1{font-size:clamp(2.6rem,5vw,4.2rem);max-width:15ch;margin-bottom:22px}
.page-head p{max-width:560px;font-size:1.02rem}

/* stats */
.stats{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:30px 28px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font:400 2rem/1 var(--serif);color:var(--ink);margin-bottom:6px}
.stat span{font-size:.8rem;color:var(--muted)}

/* sections */
.sec{padding:110px 0}
.sec-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec h2{font-size:clamp(2.2rem,3.8vw,3.1rem);margin-bottom:16px}
.intro{max-width:540px}
.thead{display:flex;justify-content:space-between;align-items:flex-end;gap:30px}
.more{font-size:.86rem;font-weight:600;color:var(--ink);border-bottom:1px solid var(--grey);padding-bottom:2px;white-space:nowrap}
.more:hover{color:var(--blue);border-color:var(--blue)}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:52px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 26px;transition:.25s}
.card:hover{border-color:var(--grey);transform:translateY(-2px)}
.ico{width:34px;height:34px;border-radius:7px;background:var(--blue-bg);color:var(--blue);display:grid;place-items:center;margin-bottom:22px}
.ico svg{width:17px;height:17px}
.card .n{font-size:.72rem;color:var(--blue);letter-spacing:.08em;margin-bottom:6px}
.card h3{font:600 1.02rem/1.3 var(--sans);color:var(--ink);letter-spacing:0;margin-bottom:10px}
.card p{font-size:.88rem;line-height:1.65}
.card small{display:block;margin-top:16px;font-size:.78rem;font-style:italic;color:var(--muted)}

/* about split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.split.top{align-items:start}
.prose p{margin-bottom:14px}
.prose p:last-child{margin-bottom:0}
.prose a{color:var(--blue-d);border-bottom:1px solid rgba(71,139,202,.35)}
.list{list-style:none;margin:26px 0 30px;padding:0}
.list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--ink)}
.list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--blue);margin-top:10px;flex:none}
.links{display:flex;flex-wrap:wrap;gap:22px;font-size:.86rem;font-weight:600;color:var(--ink)}
.links a{border-bottom:1px solid var(--grey);padding-bottom:2px}
.links a:hover{color:var(--blue);border-color:var(--blue)}
.portrait{position:relative;padding-bottom:34px}
.portrait img{width:78%;margin-left:auto;border-radius:10px;aspect-ratio:4/5;object-fit:cover;object-position:50% 20%}
.qcard{position:absolute;left:0;bottom:0;width:64%;background:var(--ink);color:#fff;border-radius:10px;padding:28px 28px 24px}
.qcard p{font:400 1.32rem/1.3 var(--serif);margin-bottom:16px}
.qcard p em{color:var(--blue-l)}
.qcard span{font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--grey)}
.photo2{border-radius:10px;overflow:hidden}
.photo2 img{width:100%;aspect-ratio:1/1;object-fit:cover}
.photo2 figcaption{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:12px}

/* info columns */
.cols{display:grid;grid-template-columns:repeat(2,1fr);gap:56px 72px}
.col h3{font-size:1.5rem;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--ink)}
.rows{list-style:none;margin:0;padding:0}
.rows li{display:grid;grid-template-columns:70px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--ink);line-height:1.55}
.rows .k{font-size:.74rem;font-weight:600;letter-spacing:.06em;color:var(--blue);padding-top:2px}
.reg{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:6px}
.reg div{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px 16px}
.reg span{display:block;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.reg b{font-weight:600;color:var(--ink)}

/* research gate */
.rg{display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--ink);color:#B7BDC4;border-radius:10px;padding:34px 36px;margin-top:48px}
.rg h3{color:#fff;font-size:1.7rem;margin-bottom:8px}
.rg h3 em{color:var(--blue-l)}
.rg p{font-size:.9rem;max-width:560px}
.rg .figs{display:flex;gap:34px;margin-top:18px}
.rg .figs b{display:block;font:400 1.6rem/1 var(--serif);color:#fff}
.rg .figs span{font-size:.74rem;color:#8A9098}

/* testimonials */
.tgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:52px;align-items:start}
.t{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px 26px;display:flex;flex-direction:column;margin:0}
.t blockquote{margin:0 0 22px;font-size:.92rem;line-height:1.7;color:var(--text);flex:1}
.t blockquote::before{content:"\201C";display:block;font:400 2.6rem/.8 var(--serif);color:var(--blue);margin-bottom:8px}
.t blockquote p+p{margin-top:.5em}
.t b{display:block;font-size:.88rem;color:var(--ink)}
.t span{font-size:.78rem;color:var(--muted)}
.tgrid.all{columns:3 300px;column-gap:16px;display:block}
.tgrid.all .t{break-inside:avoid;margin-bottom:16px}

/* tally */
.tally{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tcol{background:#fff;border:1px solid var(--line);border-radius:10px;padding:34px 32px}
.tot{display:flex;align-items:baseline;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--ink);margin-bottom:4px}
.tot b{font:400 3.6rem/1 var(--serif);color:var(--ink)}
.tot span{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.nums{list-style:none;margin:0;padding:0}
.nums li{display:flex;align-items:center;gap:18px;padding:14px 0;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--ink)}
.nums li:last-child{border-bottom:0}
.nums .l{flex:1.6}
.track{flex:1;height:3px;background:var(--line);border-radius:3px;overflow:hidden;max-width:150px}
.track i{display:block;height:100%;background:var(--blue)}
.nums b{font:400 1.35rem/1 var(--serif);min-width:2.6ch;text-align:right}

/* contact page */
.cc{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px 28px;margin-bottom:14px}
.cc small{display:block;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.cc .v{font:400 1.7rem/1.15 var(--serif);color:var(--ink);word-break:break-word}
.cc .row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.cc .note{font-size:.84rem;margin-top:12px}
.cc .note b{color:var(--ink)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border:1px solid var(--line);border-radius:6px;background:#fff;font:600 .8rem/1 var(--sans);color:var(--ink);cursor:pointer;transition:.2s}
.chip:hover{border-color:var(--ink)}
.chip svg{width:14px;height:14px}
.contact-art{border-radius:10px;overflow:hidden}
.contact-art img{width:100%;aspect-ratio:4/5;object-fit:cover}

/* cta */
.cta{background:var(--ink);color:#B7BDC4;text-align:center;padding:110px 0;position:relative;overflow:hidden}
.cta::before,.cta::after{content:"";position:absolute;left:50%;top:50%;border:1px solid rgba(255,255,255,.06);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none}
.cta::before{width:620px;height:620px}.cta::after{width:980px;height:980px}
.cta .wrap{position:relative;z-index:1}
.cta .label{color:var(--blue-l)}
.cta h2{color:#fff;font-size:clamp(2.2rem,4vw,3.3rem);margin-bottom:18px}
.cta h2 em{color:var(--blue-l)}
.cta p{max-width:520px;margin:0 auto}
.cta .ctas{justify-content:center;margin-top:34px}
.cta .btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.25)}
.cta .btn-light:hover{border-color:#fff}
.cta small{display:block;margin-top:22px;font-size:.78rem;color:#8A9098}

/* footer */
.site-footer{background:var(--ink);border-top:1px solid rgba(255,255,255,.08);color:#8A9098;font-size:.78rem}
.site-footer .wrap{display:flex;justify-content:space-between;align-items:center;min-height:76px;gap:20px;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}
.site-footer nav{display:flex;gap:26px;flex-wrap:wrap}
.site-footer a{color:#B7BDC4}
.site-footer a:hover{color:#fff}

/* 404 */
.nf{min-height:70vh;display:flex;align-items:center}

@media (max-width:900px){
  .menu-btn{display:inline-flex}
  .site-header .btn{display:none}
  .nav{position:fixed;inset:72px 0 auto 0;background:var(--bg);flex-direction:column;gap:0;padding:8px 32px 20px;border-bottom:1px solid var(--line);opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s}
  .nav.open{opacity:1;visibility:visible;transform:none}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav a[aria-current="page"]::after{display:none}
  .hero{min-height:0;max-height:none}
  .hero .wrap,.split,.cols,.tally{grid-template-columns:1fr}
  .split{gap:48px}
  .dots,.page-head .dots{inset:0}
  .hero-art img{height:420px}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .cards,.tgrid{grid-template-columns:1fr}
  .portrait img{width:100%}
  .qcard{position:relative;width:auto;margin-top:-60px;margin-right:24px}
  .portrait{padding-bottom:0}
  .thead{flex-direction:column;align-items:flex-start}
  .rg{flex-direction:column;align-items:flex-start}
  .sec{padding:80px 0}
}
@media (max-width:560px){
  .wrap{padding:0 22px}
  .pill{font-size:.7rem}
  .who span{display:block}
  .tag.t2{left:-6px}
  .track{display:none}
  .reg{grid-template-columns:1fr}
  .site-footer .wrap{flex-direction:column;align-items:flex-start}
}
.who .sep{font-style:normal}
@media (max-width:560px){.who .sep{display:none}}