/* =====================================================================
   Tan Khuu, DDS — Full-Arch Implant Studio
   Shared design system. Navy + gold, Cormorant Garamond + Jost.
   ===================================================================== */

:root{
  --navy:#10243b;
  --navy-deep:#0a1828;
  --navy-mid:#16324f;
  --gold:#c2a45d;
  --gold-soft:#d8c290;
  --cream:#f7f3ec;
  --stone:#eae3d7;
  --ink:#22303f;
  --muted:#5d6b78;
  --line:#e2dccf;
  --white:#ffffff;
  --ok:#2f7d52;
  --serif:'Cormorant Garamond',Georgia,serif;
  --sans:'Jost',-apple-system,Segoe UI,sans-serif;
  --shadow:0 18px 50px -24px rgba(10,24,40,.45);
  --radius:4px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--white);line-height:1.65;font-weight:300;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.12;color:var(--navy)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px}

/* ---- helpers ---- */
.eyebrow{font-family:var(--sans);font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);font-weight:500;margin-bottom:14px}
.eyebrow.on-dark{color:var(--gold-soft)}
.center{text-align:center}
.gold{color:var(--gold)}
.serif-em{font-style:italic;color:var(--gold)}

.btn{display:inline-block;font-family:var(--sans);font-weight:500;letter-spacing:.05em;font-size:.86rem;text-transform:uppercase;padding:15px 32px;border-radius:2px;transition:.25s;cursor:pointer;border:1px solid transparent;text-align:center}
.btn-gold{background:var(--gold);color:var(--navy-deep)}
.btn-gold:hover{background:var(--gold-soft)}
.btn-outline{border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline:hover{background:#fff;color:var(--navy)}
.btn-ghost{border-color:var(--gold);color:var(--navy)}
.btn-ghost:hover{background:var(--gold);color:var(--navy-deep)}

/* ---- top bar ---- */
.topbar{background:var(--navy-deep);color:#cdd6df;font-size:.78rem;letter-spacing:.04em}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding:8px 24px}
.topbar a:hover{color:var(--gold-soft)}
.topbar .rt span{margin-left:18px}
.topbar .lang{color:var(--gold-soft)}

/* ---- header ---- */
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(6px);border-bottom:1px solid var(--stone)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1180px;margin:0 auto}
.logo{font-family:var(--serif);font-size:1.5rem;font-weight:700;color:var(--navy);letter-spacing:.02em;line-height:1}
.logo small{display:block;font-family:var(--sans);font-size:.58rem;letter-spacing:.30em;text-transform:uppercase;color:var(--gold);font-weight:500;margin-top:3px}
nav.main ul{list-style:none;display:flex;gap:28px;align-items:center}
nav.main a{font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;font-weight:400;color:var(--ink);transition:.2s}
nav.main a:hover,nav.main a.active{color:var(--gold)}
.nav-cta{display:flex;align-items:center;gap:16px}
.nav-phone{font-weight:500;color:var(--navy);font-size:.92rem;letter-spacing:.03em;white-space:nowrap}
.menu-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--navy);cursor:pointer}

/* ---- hero ---- */
.hero{position:relative;background:linear-gradient(120deg,var(--navy-deep) 0%,var(--navy) 55%,var(--navy-mid) 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(194,164,93,.22),transparent 70%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;padding-top:78px;padding-bottom:78px}
.hero h1{color:#fff;font-size:3.4rem;letter-spacing:.4px}
.hero h1 em{font-style:italic;color:var(--gold-soft)}
.hero p.lead{font-size:1.12rem;color:#cdd6df;margin:24px 0 18px;max-width:520px;font-weight:300}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:14px}
.stars{display:flex;align-items:center;gap:10px;margin-top:28px;font-size:.85rem;color:#cdd6df;letter-spacing:.04em}
.stars .s{color:var(--gold);letter-spacing:2px;font-size:1rem}

/* photo frame used site-wide as image placeholder */
.frame{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:6px;overflow:hidden;box-shadow:var(--shadow)}
.frame .photo{min-height:330px;background:linear-gradient(135deg,#1d3b59,#0d1f33);position:relative;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.42);font-family:var(--serif);font-size:1.05rem;text-align:center;padding:26px;font-style:italic}
.frame .meta{display:grid;grid-template-columns:repeat(3,1fr);text-align:center;border-top:1px solid rgba(255,255,255,.12)}
.frame .meta div{padding:18px 8px;border-right:1px solid rgba(255,255,255,.12)}
.frame .meta div:last-child{border-right:none}
.frame .meta b{display:block;font-family:var(--serif);font-size:1.7rem;color:var(--gold-soft);line-height:1}
.frame .meta span{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:#aebcc9}

/* image placeholder on light bg */
.imgph{background:var(--stone);border:1px dashed #c9bfa8;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;text-align:center;color:#9a8f76;font-style:italic;font-family:var(--serif);padding:24px;min-height:220px}

/* ---- trust bar ---- */
.trust{background:var(--cream);border-bottom:1px solid var(--stone)}
.trust .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:22px 24px;flex-wrap:wrap}
.trust .lab{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);font-weight:500}
.trust .badges{display:flex;gap:26px;flex-wrap:wrap;align-items:center}
.trust .badge{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:.95rem;opacity:.85;letter-spacing:.02em}

/* ---- sections ---- */
section{padding:86px 0}
section.tight{padding:64px 0}
section.cream{background:var(--cream)}
section.navy{background:linear-gradient(120deg,var(--navy-deep),var(--navy));color:#fff}
section.navy h2,section.navy h3{color:#fff}
.section-head{max-width:720px;margin:0 auto 52px}
.section-head.center{text-align:center}
.section-head h2{font-size:2.6rem}
.section-head p{color:var(--muted);margin-top:14px;font-size:1.05rem}
section.navy .section-head p{color:#cdd6df}

/* page hero (interior pages) */
.page-hero{background:linear-gradient(120deg,var(--navy-deep),var(--navy) 60%,var(--navy-mid));color:#fff;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-120px;top:-140px;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(194,164,93,.20),transparent 70%)}
.page-hero .wrap{position:relative;z-index:2;padding:66px 24px 60px;max-width:900px}
.page-hero h1{color:#fff;font-size:3rem;max-width:820px}
.page-hero p{color:#cdd6df;font-size:1.12rem;margin-top:18px;max-width:680px}
.crumbs{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:#93a3b3;margin-bottom:20px}
.crumbs a:hover{color:var(--gold-soft)}

/* ---- problem/promise strip ---- */
.pp{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.pp .col{padding:40px}
.pp .prob{background:#fbf8f2}
.pp .prom{background:var(--navy);color:#fff}
.pp .prom h3{color:#fff}
.pp ul{list-style:none;margin-top:16px}
.pp li{padding:8px 0 8px 26px;position:relative}
.pp .prob li::before{content:"—";position:absolute;left:0;color:var(--gold);font-weight:600}
.pp .prom li::before{content:"\2713";position:absolute;left:0;color:var(--gold-soft);font-weight:600}

/* ---- steps ---- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:34px 28px;position:relative}
.step .n{font-family:var(--serif);font-size:2.6rem;color:var(--gold);line-height:1;margin-bottom:12px}
.step h3{font-size:1.4rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.98rem}

/* ---- cards / results ---- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.card{background:var(--white);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card .body{padding:24px}
.card h3{font-size:1.35rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.96rem}
.card .tag{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);font-weight:500;margin-bottom:10px}
.card .more{display:inline-block;margin-top:16px;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);border-bottom:1px solid var(--gold);padding-bottom:2px}

/* ---- why / features ---- */
.feat{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}
.feat .item{padding-left:20px;border-left:2px solid var(--gold)}
.feat h3{font-size:1.3rem;margin-bottom:6px}
.feat p{color:var(--muted);font-size:.98rem}
section.navy .feat p{color:#c3ceda}
section.navy .feat .item{border-left-color:var(--gold-soft)}

/* ---- comparison table ---- */
.tbl{width:100%;border-collapse:collapse;font-size:.98rem;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.tbl th,.tbl td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line)}
.tbl thead th{background:var(--navy);color:#fff;font-family:var(--sans);font-weight:500;letter-spacing:.04em;font-size:.82rem;text-transform:uppercase}
.tbl tbody tr:last-child td{border-bottom:none}
.tbl td:first-child{font-weight:500;color:var(--navy)}
.tbl .yes{color:var(--ok);font-weight:500}

/* ---- FAQ ---- */
.faq{max-width:840px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:6px 0}
.faq summary{cursor:pointer;list-style:none;padding:18px 40px 18px 0;position:relative;font-family:var(--serif);font-size:1.32rem;color:var(--navy);font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:16px;font-family:var(--sans);font-size:1.6rem;color:var(--gold);font-weight:300;transition:.2s}
.faq details[open] summary::after{content:"\2013"}
.faq details p{color:var(--muted);padding:0 40px 20px 0}

/* ---- cost box ---- */
.cost{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cost .figure{background:var(--navy);color:#fff;border-radius:8px;padding:44px 40px;text-align:center;box-shadow:var(--shadow)}
.cost .figure .amt{font-family:var(--serif);font-size:3.2rem;color:var(--gold-soft);line-height:1}
.cost .figure .amt small{font-size:1rem;color:#aebcc9;letter-spacing:.06em}
.cost .figure .note{color:#cdd6df;font-size:.9rem;margin-top:10px}
.finance{display:flex;gap:14px;flex-wrap:wrap;margin-top:20px}
.chip{border:1px solid var(--line);border-radius:40px;padding:8px 18px;font-size:.82rem;letter-spacing:.04em;color:var(--navy);background:#fff}

/* ---- reviews ---- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px}
.review .s{color:var(--gold);letter-spacing:2px;font-size:1rem;margin-bottom:12px}
.review p{font-family:var(--serif);font-size:1.18rem;color:var(--navy);font-style:italic;line-height:1.4}
.review .who{margin-top:16px;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}

/* ---- big CTA band ---- */
.cta-band{background:linear-gradient(120deg,var(--navy-deep),var(--navy-mid));color:#fff;text-align:center;padding:76px 24px;position:relative;overflow:hidden}
.cta-band h2{color:#fff;font-size:2.5rem;max-width:760px;margin:0 auto}
.cta-band p{color:#cdd6df;margin:16px auto 28px;max-width:560px}
.cta-band .actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ---- demoted services ---- */
.demote{background:var(--cream);border:1px solid var(--line);border-radius:6px;padding:30px 34px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.demote p{color:var(--muted);max-width:640px}
.demote h3{font-size:1.35rem;margin-bottom:6px}

/* ---- prose (article/case pages) ---- */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:2rem;margin:44px 0 14px}
.prose h3{font-size:1.4rem;margin:28px 0 10px}
.prose p{margin:0 0 16px;color:var(--ink);font-size:1.06rem}
.prose ul{margin:0 0 18px 22px;color:var(--ink)}
.prose li{margin-bottom:8px}
.prose .lead-para{font-size:1.2rem;color:var(--navy);border-left:3px solid var(--gold);padding:6px 0 6px 22px;background:#fbf8f2;font-family:var(--serif)}
.pullquote{font-family:var(--serif);font-size:1.7rem;font-style:italic;color:var(--navy);text-align:center;margin:40px auto;max-width:640px;line-height:1.3}
.pullquote cite{display:block;font-size:.86rem;font-style:normal;letter-spacing:.08em;text-transform:uppercase;color:var(--gold);margin-top:14px;font-family:var(--sans)}
.disclaimer{background:#fbf8f2;border:1px solid var(--line);border-radius:6px;padding:16px 20px;color:var(--muted);font-size:.88rem;margin:26px 0}

/* before/after */
.ba{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.ba figure{margin:0}
.ba figcaption{text-align:center;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:8px}

/* ---- footer ---- */
footer.site{background:var(--navy-deep);color:#aebcc9;font-size:.9rem}
footer.site .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:66px 24px 30px}
footer.site h4{color:#fff;font-family:var(--sans);font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;margin-bottom:16px;font-weight:500}
footer.site .brand .logo{color:#fff;font-size:1.5rem}
footer.site .brand p{margin-top:14px;max-width:280px;color:#93a3b3}
footer.site ul{list-style:none}
footer.site li{margin-bottom:9px}
footer.site a:hover{color:var(--gold-soft)}
footer.site .foot-b{border-top:1px solid rgba(255,255,255,.1);text-align:center;padding:20px;font-size:.78rem;color:#7c8b99;letter-spacing:.03em}
footer.site .foot-b .legal{max-width:900px;margin:0 auto 8px;line-height:1.6}

/* ---- responsive ---- */
@media(max-width:920px){
  .hero .wrap{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:2.7rem}
  .steps,.grid-3,.reviews{grid-template-columns:1fr}
  .grid-2,.cost,.pp,.feat{grid-template-columns:1fr}
  .page-hero h1{font-size:2.3rem}
  .section-head h2{font-size:2.1rem}
  nav.main{display:none}
  nav.main.open{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--stone);padding:10px 24px}
  nav.main.open ul{flex-direction:column;align-items:flex-start;gap:4px;padding:10px 0}
  nav.main.open a{display:block;padding:10px 0}
  .menu-toggle{display:block}
  footer.site .wrap{grid-template-columns:1fr 1fr}
  .topbar .lt{display:none}
}
@media(max-width:560px){
  footer.site .wrap{grid-template-columns:1fr}
  .hero h1{font-size:2.3rem}
  .nav-phone{display:none}
}