/* MOTTA design system — tokens and the components the 2026-09-16 homepage study introduced.
 *
 * Colours and type sizes follow "MOTTA VI 視覺規則 V1.1". Everything here is prefixed ds- or scoped
 * to a ds- block, so it can be loaded on any page without disturbing the existing stylesheets.
 *
 * Motion rule: one curve, one distance, 200–700 ms. Nothing moves that does not need to.
 */
:root{
  --ds-red:#C8102E; --ds-red-deep:#A50D26;
  --ds-navy:#1A2744; --ds-navy-2:#111B31; --ds-navy-3:#0B1223;
  --ds-ink:#1A1A1A; --ds-grey:#5C5C5C; --ds-line:#E3E6EA; --ds-wash:#F2F2F2;
  --ds-display:clamp(38px,6vw,72px);
  --ds-h1:clamp(29px,3.4vw,46px);
  --ds-h2:clamp(23px,2.3vw,33px);
  --ds-s1:8px; --ds-s2:16px; --ds-s3:24px; --ds-s4:32px; --ds-s5:48px; --ds-s6:72px; --ds-s7:104px;
  --ds-r:14px;
  --ds-ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- motion ------------------------------------------------------- */
.ds-reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ds-ease),transform .7s var(--ds-ease)}
.ds-reveal.is-in{opacity:1;transform:none}
.ds-reveal.d1{transition-delay:.06s}.ds-reveal.d2{transition-delay:.12s}.ds-reveal.d3{transition-delay:.18s}
@media (prefers-reduced-motion:reduce){.ds-reveal{opacity:1;transform:none;transition:none}}

/* ---------- buttons ------------------------------------------------------ */
.ds-btn{display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 24px;border-radius:999px;
  font-weight:700;font-size:15px;line-height:1;text-decoration:none;border:0;cursor:pointer;
  transition:transform .25s var(--ds-ease),box-shadow .25s var(--ds-ease),background .25s var(--ds-ease),border-color .25s var(--ds-ease)}
.ds-btn:active{transform:scale(.97)}
.ds-btn svg{width:18px;height:18px}
.ds-btn-red{background:var(--ds-red);color:#fff;box-shadow:0 8px 24px -12px rgba(200,16,46,.9)}
.ds-btn-red:hover{background:var(--ds-red-deep);color:#fff;box-shadow:0 14px 30px -12px rgba(200,16,46,.95)}
.ds-btn-ghost{border:1px solid rgba(255,255,255,.38);color:#fff}
.ds-btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.ds-btn-line{border:1px solid var(--ds-line);color:var(--ds-ink);background:#fff}
.ds-btn-line:hover{border-color:var(--ds-ink);color:var(--ds-ink)}

/* ---------- section furniture -------------------------------------------- */
.ds-sec{padding:var(--ds-s7) 0;background:#fff}
.ds-sec.ds-wash{background:var(--ds-wash)}
.ds-sec .shell{max-width:1200px}
.ds-head{max-width:64ch;margin-bottom:var(--ds-s5)}
.ds-eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--ds-red)}
.ds-head h2{margin:var(--ds-s2) 0 0;font-size:var(--ds-h2);line-height:1.1;letter-spacing:-.02em;font-weight:800;color:var(--ds-ink)}
.ds-head p{margin:var(--ds-s2) 0 0;color:var(--ds-grey);font-size:17px;line-height:1.6}

/* ---------- pillars ------------------------------------------------------ */
.ds-pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--ds-s3)}
.ds-pillar{border:1px solid var(--ds-line);border-radius:var(--ds-r);padding:var(--ds-s4);background:#fff;
  transition:transform .4s var(--ds-ease),box-shadow .4s var(--ds-ease),border-color .4s var(--ds-ease)}
.ds-pillar:hover{transform:translateY(-4px);box-shadow:0 22px 48px -30px rgba(26,39,68,.55);border-color:#cfd6df}
.ds-pillar .n{font-size:12px;font-weight:800;color:var(--ds-red);letter-spacing:.14em}
.ds-pillar h3{margin:var(--ds-s2) 0 10px;font-size:19px;line-height:1.2;font-weight:800;color:var(--ds-ink)}
.ds-pillar p{color:var(--ds-grey);font-size:15px;line-height:1.6;margin:0}
.ds-pillar ul{margin:var(--ds-s2) 0 0;padding-left:18px;color:var(--ds-grey);font-size:14px;line-height:1.5}
.ds-pillar li{margin-top:6px}

/* ---------- comparison table --------------------------------------------- */
.ds-compare{border:1px solid var(--ds-line);border-radius:var(--ds-r);overflow:hidden;background:#fff}
.ds-compare .row{display:grid;grid-template-columns:1.2fr 1fr 1fr;font-size:15px}
.ds-compare .row.h{background:var(--ds-navy);color:#fff;font-weight:700;font-size:14px}
.ds-compare .row>*{padding:16px 18px;border-top:1px solid var(--ds-line)}
.ds-compare .row.h>*{border-top:0}
.ds-compare .lbl{font-weight:600;color:var(--ds-ink)}
.ds-compare .them{color:var(--ds-grey)}
.ds-compare .us{font-weight:700;color:var(--ds-ink)}

/* ---------- partner / recruiting block ------------------------------------ */
.ds-recruit{background:var(--ds-navy-2);color:#fff;padding:var(--ds-s7) 0}
.ds-recruit .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--ds-s6);align-items:center;
  max-width:1200px;margin:0 auto}
.ds-recruit h2{margin:var(--ds-s2) 0 0;font-size:var(--ds-h1);line-height:1.08;letter-spacing:-.02em;font-weight:800;max-width:16ch}
.ds-recruit p{color:rgba(255,255,255,.78);margin-top:var(--ds-s3);max-width:48ch;font-size:17px;line-height:1.6}
.ds-recruit .ds-eyebrow{color:#fff;opacity:.7}
.ds-recruit ul{list-style:none;margin:var(--ds-s4) 0 0;padding:0}
.ds-recruit li{display:flex;gap:16px;padding:16px 0;border-top:1px solid rgba(255,255,255,.14);font-size:15px;line-height:1.55}
.ds-recruit li b{min-width:104px;color:#fff}
.ds-recruit li span{color:rgba(255,255,255,.74)}
.ds-recruit figure{margin:0;border-radius:var(--ds-r);overflow:hidden}
.ds-recruit figure img{width:100%;height:100%;object-fit:cover;display:block}
.ds-recruit .cta{margin-top:var(--ds-s4);display:flex;gap:var(--ds-s2);flex-wrap:wrap}

@media (max-width:980px){
  .ds-pillars{grid-template-columns:1fr}
  .ds-sec{padding:var(--ds-s6) 0}
  .ds-recruit{padding:var(--ds-s6) 0}
  .ds-recruit .grid{grid-template-columns:1fr;gap:var(--ds-s4)}
  .ds-compare .row{grid-template-columns:1fr}
  .ds-compare .row.h{display:none}
  .ds-compare .row>*{border-top:0;padding:8px 18px}
  .ds-compare .row{border-top:1px solid var(--ds-line)}
  .ds-compare .lbl{padding-top:16px;background:var(--ds-wash)}
  .ds-compare .row>*:last-child{padding-bottom:16px}
  .ds-compare .them::before{content:attr(data-them) ": ";color:var(--ds-grey);font-weight:600}
  .ds-compare .us::before{content:"MOTTA: ";color:var(--ds-red);font-weight:700}
}
.ds-recruit h2:lang(zh){max-width:none}

/* ---------- homepage hero, number band, division tiles (approved study preview/home-v2.html) ---------- */
.ds-hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--ds-navy-3)}
.ds-hero-bg{position:absolute;inset:0}
.ds-hero-bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.06);animation:ds-slowzoom 18s var(--ds-ease) forwards}
@keyframes ds-slowzoom{to{transform:scale(1)}}
.ds-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,18,35,.94) 0%,rgba(11,18,35,.86) 42%,rgba(11,18,35,.35) 72%,rgba(11,18,35,.15) 100%)}
.ds-hero .shell{position:relative;flex:none;width:min(1200px,calc(100% - 40px));max-width:none;margin:0 auto;padding-top:var(--ds-s7);padding-bottom:var(--ds-s6)}
.ds-hero .ds-eyebrow{color:#fff;opacity:.72}
.ds-hero h1{font-size:var(--ds-display);line-height:1.02;letter-spacing:-.025em;font-weight:800;margin:var(--ds-s3) 0 0;max-width:15ch;color:#fff}
.ds-hero h1 em{font-style:normal;display:block}
.ds-hero h1 .thin{display:block;font-weight:300;opacity:.9}
.ds-hero .lead{margin:var(--ds-s3) 0 0;max-width:52ch;font-size:clamp(16px,1.3vw,19px);line-height:1.6;color:rgba(255,255,255,.82)}
.ds-hero .cta{display:flex;flex-wrap:wrap;gap:var(--ds-s2);margin-top:var(--ds-s4)}
.ds-hero .promise{display:flex;align-items:center;gap:10px;margin-top:var(--ds-s3);font-size:14px;color:rgba(255,255,255,.75)}
.ds-dot{flex:none;width:8px;height:8px;border-radius:50%;background:#28C76F;animation:ds-pulse 2.4s infinite}
@keyframes ds-pulse{0%{box-shadow:0 0 0 0 rgba(40,199,111,.6)}70%{box-shadow:0 0 0 10px rgba(40,199,111,0)}100%{box-shadow:0 0 0 0 rgba(40,199,111,0)}}

.ds-band{background:var(--ds-navy);color:#fff}
.ds-band .shell{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--ds-s3);max-width:1200px;padding-top:var(--ds-s5);padding-bottom:var(--ds-s5)}
.ds-band b{display:block;font-size:clamp(28px,3vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1}
.ds-band b small{font-size:.45em;font-weight:700;opacity:.75;margin-left:4px}
.ds-band span{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.7)}

.ds-tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--ds-s2)}
.ds-tile{position:relative;aspect-ratio:4/5;border-radius:var(--ds-r);overflow:hidden;color:#fff;display:flex;align-items:flex-end;text-decoration:none;background:var(--ds-navy)}
.ds-tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ds-ease)}
.ds-tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,18,35,0) 35%,rgba(11,18,35,.88) 100%)}
.ds-tile:hover{color:#fff}.ds-tile:hover img{transform:scale(1.06)}
.ds-tile .t{position:relative;padding:var(--ds-s3);z-index:1}
.ds-tile b{font-size:17px}
.ds-tile span{display:block;margin-top:6px;font-size:13px;opacity:.82}
.ds-tile .go{margin-top:12px;font-weight:700;opacity:0;transform:translateY(6px);transition:opacity .4s var(--ds-ease),transform .4s var(--ds-ease)}
.ds-tile:hover .go,.ds-tile-all .go{opacity:1;transform:none}
.ds-tile-all{background:linear-gradient(160deg,var(--ds-red) 0%,var(--ds-red-deep) 100%)}
.ds-tile-all::after{display:none}
@media (max-width:980px){
  .ds-band .shell{grid-template-columns:repeat(2,1fr)}
  .ds-tiles{grid-template-columns:repeat(2,1fr)}
  .ds-hero .shell{padding-top:var(--ds-s6);padding-bottom:var(--ds-s5)}
  .ds-tile .go{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){.ds-hero-bg img,.ds-dot{animation:none;transform:none}}
html body .ds-band{padding:0}
html body .ds-hero{padding:0}
html body .ds-recruit .cta{border:0;background:none;padding:0}
html body .ds-recruit .cta::before,html body .ds-recruit .cta::after{display:none}
@media (max-width:980px){html body .ds-band .shell{padding-top:var(--ds-s4);padding-bottom:var(--ds-s4);gap:var(--ds-s4) var(--ds-s3)}}

/* ---------- brand film ---------- */
html body .ds-film{background:var(--ds-navy-3);color:#fff;padding:var(--ds-s7) 0}
.ds-film .shell{max-width:1200px}
.ds-film .ds-head h2{color:#fff}
.ds-film .ds-head p{color:rgba(255,255,255,.72)}
.ds-film-frame{border-radius:var(--ds-r);overflow:hidden;background:#020609;aspect-ratio:16/9;box-shadow:0 40px 80px -40px rgba(0,0,0,.8)}
.ds-film-frame video{display:block;width:100%;height:100%;object-fit:cover;background:#020609}
@media (max-width:980px){html body .ds-film{padding:var(--ds-s6) 0}}
.ds-hero h1:lang(zh){max-width:none}
.ds-hero h1:lang(vi){max-width:18ch}