/* Kenneth Studio Workshop — plain CSS, no framework.
   Dual visual system: tech = blue on black; jade product = gold on black;
   jade teaching = parchment cream + leaf green (marketing dual set). */
:root{
  --bg:#0a0a0b; --panel:#111114; --panel-2:#16161a; --text:#e7e7ea; --muted:#9a9aa3;
  --line:#26262c; --line-soft:#1c1c21;
  --blue:#3b82f6; --blue-2:#38bdf8; --blue-dim:rgba(59,130,246,.45);
  --gold:#d4af37; --gold-2:#c9a227; --gold-soft:#e8d48a; --gold-dim:rgba(212,175,55,.4);
  --cream:#f3ead6; --cream-2:#ebe0c4; --cream-ink:#3a3326;
  --leaf:#2d5a3d; --leaf-2:#1e4030; --leaf-soft:#4a7c59; --leaf-line:rgba(45,90,61,.22);
  --warn-bg:#1c1708; --warn-line:#6b5a1e;
  --radius:12px; --max:960px; --pad:clamp(18px,4vw,28px);
  --font:"Noto Sans HK","Noto Sans CJK HK",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang HK","Noto Sans TC","Microsoft JhengHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.75;font-size:16px}
body.home{background:
  radial-gradient(900px 420px at 12% -8%,rgba(59,130,246,.07),transparent 55%),
  radial-gradient(800px 480px at 92% 8%,rgba(212,175,55,.05),transparent 50%),
  var(--bg)}
img,svg{display:block;max-width:100%}
a{color:var(--blue-2);text-underline-offset:3px}
a:hover{color:#7dd3fc}
a:focus-visible{outline:2px solid var(--blue-2);outline-offset:3px;border-radius:2px}
code{background:#1e1e24;color:#cfe3ff;padding:1px 6px;border-radius:4px;font-size:.9em}
.ph{background:#3a3112;color:#f5dd8a;border-radius:3px;padding:1px 6px;font-size:.92em}
.muted{color:var(--muted);font-size:.88em}
strong{color:#fff;font-weight:600}
.nw{white-space:nowrap}
p,li,dd,.p-desc{text-wrap:pretty}
h1,h2,.ht-zh,.tagline{text-wrap:balance}
.m-br{display:none}
.skip{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{position:fixed;left:12px;top:12px;width:auto;height:auto;padding:10px 14px;background:#fff;color:#000;z-index:99;border-radius:6px}

.wrap,.wrap-wide{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.wrap{max-width:720px} /* legacy / legal pages */

/* Dual accent bar: blue (tech) + gold (jade) */
.dual-line{display:flex;height:2px;width:100%}
.dual-line span{flex:1}
.dual-line span:first-child{background:linear-gradient(90deg,transparent,var(--blue) 18%,var(--blue))}
.dual-line span:last-child{background:linear-gradient(90deg,var(--gold),var(--gold) 82%,transparent)}

/* ===== Masthead ===== */
.masthead{position:sticky;top:0;z-index:40;background:rgba(10,10,11,.88);backdrop-filter:saturate(140%) blur(10px);-webkit-backdrop-filter:saturate(140%) blur(10px)}
.mast-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:14px;padding-bottom:14px;min-height:64px}
.wordmark{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.wordmark:hover{color:#fff}
.wordmark .ksw{height:24px;width:auto;flex:0 0 auto}
.wm-label{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);padding-left:12px;border-left:1px solid var(--line);line-height:1.2}
.mast-nav{display:flex;gap:22px;flex-wrap:wrap;font-size:.88rem}
.mast-nav a{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent;padding-bottom:2px}
.mast-nav a:hover{color:#fff}
.mast-nav a.n-jump:hover{color:var(--blue-2);border-color:var(--blue-2)}
.mast-nav a.n-jade:hover{color:var(--gold);border-color:var(--gold)}

/* Top bar (legal sub-pages) */
.topbar{border-bottom:1px solid var(--line);background:rgba(10,10,11,.92)}
.topbar .wrap{padding-top:14px;padding-bottom:14px;display:flex;align-items:center;justify-content:center}
.topbar .brand{display:inline-flex;align-items:center;gap:12px;font-weight:500;text-decoration:none;color:#fff;letter-spacing:.16em;text-transform:uppercase;font-size:.72rem}
.topbar .brand .ksw{height:20px;width:auto;flex:0 0 auto;padding-right:12px;box-sizing:content-box;border-right:1px solid var(--line)}
.topbar .brand-text{display:block;text-align:left}
.topbar .brand-text>span{display:block;font-weight:400;letter-spacing:.04em;text-transform:none;font-size:.82rem;color:var(--muted);margin-top:2px}

/* ===== Hero ===== */
.hero{padding:clamp(48px,9vw,88px) 0 clamp(40px,6vw,64px);text-align:center}
.eyebrow{font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--muted);margin:0 0 22px}
.hero-title{margin:0}
.hero-logo{margin:0 auto;width:min(520px,84vw)}
.hero-logo img{width:100%;height:auto;margin:0 auto}
.hero-motto{margin:26px 0 0;font-size:clamp(1.25rem,3vw,1.6rem);font-weight:300;letter-spacing:.12em;color:#fff;line-height:1.5;text-wrap:balance}
.ht-zh{display:block;font-size:clamp(1.85rem,4.6vw,2.75rem);line-height:1.28;font-weight:300;letter-spacing:.04em;color:#fff}
.ht-en{display:block;margin-top:14px;font-size:.78rem;letter-spacing:.28em;text-transform:uppercase;color:var(--muted);font-weight:400}
.hero-lead{margin:22px auto 0;max-width:34em;color:#c9c9d0;font-size:1.02rem}

.pillars{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:40px auto 0;max-width:820px;text-align:left}
.pillar{display:flex;flex-direction:column;gap:6px;padding:22px 22px 20px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}
.pillar:hover{transform:translateY(-1px)}
.pillar .p-no{font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.pillar .p-name{font-size:1.15rem;font-weight:600;color:#fff;letter-spacing:.02em}
.pillar .p-en{font-size:.85rem;color:var(--muted)}
.pillar .p-desc{font-size:.92rem;color:#c4c4cc;margin-top:4px;line-height:1.65}
.pillar .p-go{margin-top:12px;font-size:.85rem;letter-spacing:.04em}
.p-tech{border-top:2px solid var(--blue)}
.p-tech:hover{border-color:var(--blue-dim)}
.p-tech .p-go{color:var(--blue-2)}
.p-jade{position:relative;border-top:2px solid var(--gold)}
.p-seal{position:absolute;top:18px;right:18px;width:30px;height:auto;opacity:.85}
.p-jade:hover{border-color:var(--gold-dim)}
.p-jade .p-name{font-weight:400;letter-spacing:.06em}
.p-jade .p-go{color:var(--gold)}

/* ===== Sections ===== */
.section{padding:clamp(40px,7vw,72px) 0;border-top:1px solid var(--line-soft);scroll-margin-top:72px}
.sec-head{margin-bottom:28px}
.sec-no{font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.sec-title-row{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px 16px}
.section h2{margin:0;font-size:clamp(1.45rem,3vw,1.85rem);line-height:1.3;font-weight:600;color:#fff}
.subtitle-en{margin:8px 0 0;color:var(--muted);font-size:.95rem;letter-spacing:.02em}
.lead{margin:0;font-size:1.05rem;color:#d0d0d6}
.note{font-size:.88em;color:var(--muted);margin:10px 0 0}
.section h3{font-size:.95rem;margin:32px 0 10px;letter-spacing:.06em;font-weight:600;color:#fff}

.ver{display:inline-block;font-size:.68rem;letter-spacing:.1em;padding:3px 10px;border-radius:999px;border:1px solid var(--blue-dim);color:var(--blue-2);background:rgba(59,130,246,.08);font-weight:500}
.draft-chip{display:inline-block;margin-left:8px;font-size:.68rem;letter-spacing:.08em;padding:2px 8px;border-radius:999px;border:1px solid var(--warn-line);color:#f5dd8a;background:var(--warn-bg);vertical-align:middle}
.draft-chip.sm{margin-left:6px;font-size:.62rem}

/* Tech section */
.s-tech{background:linear-gradient(180deg,rgba(59,130,246,.035),transparent 42%)}
.s-tech h2,.s-tech h3{color:var(--blue-2)}
.s-tech h3{border-left:2px solid var(--blue);padding-left:10px}
.tech-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.tech-copy .lead{margin-bottom:4px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 6px}
.btn{display:inline-block;padding:11px 20px;border-radius:8px;text-decoration:none;font-weight:600;border:1px solid var(--blue);text-align:center;letter-spacing:.02em;font-size:.95rem}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:#2563eb;color:#fff}
.btn.secondary{background:transparent;color:var(--blue-2);border-color:var(--blue-2)}
.btn.secondary:hover{background:rgba(56,189,248,.08);color:#7dd3fc}
.btn.gold{background:transparent;color:var(--gold);border-color:var(--gold);font-weight:500;letter-spacing:.04em}
.btn.gold:hover{background:rgba(212,175,55,.1);color:var(--gold-soft)}
.apk-note{max-width:36em;text-wrap:pretty}

.compare-viz{margin:0;padding:18px;background:var(--panel);border:1px solid var(--blue-dim);border-radius:var(--radius)}
.cv-frames{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.cv-frame{background:#0c0c0e;border:1px solid var(--line);border-radius:8px;padding:10px 8px 6px;text-align:center}
.cv-label{display:block;font-size:.68rem;letter-spacing:.14em;color:var(--blue-2);margin-bottom:4px}
.cv-frame svg{width:100%;height:auto;margin:0 auto}
.cv-read{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0 0;padding:0}
.cv-read div{text-align:center;padding:6px 4px;border-top:1px solid var(--line)}
.cv-read dt{font-size:.68rem;letter-spacing:.1em;color:var(--muted)}
.cv-read dd{margin:2px 0 0;font-size:.85rem;color:#fff;font-variant-numeric:tabular-nums}
.compare-viz figcaption{margin-top:10px;font-size:.72rem;letter-spacing:.08em;color:var(--muted);text-align:center}

.tech-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:36px}
.tech-cols ul{padding-left:1.15em;margin:6px 0}
.tech-cols li{margin:6px 0}
.do li::marker{color:var(--blue)}
.not li::marker{content:"✕  ";color:#f87171}

.trust{border-left:2px solid var(--blue-dim);padding:4px 0 4px 16px;color:#c4c4cc;font-size:.93em;margin-top:4px}
.trust p{margin:8px 0}
.trust em{display:block;font-size:.9em;color:var(--muted);font-style:normal;margin-top:2px}
.legal-line{margin-top:28px}

/* Jade section (product set) */
.s-jade{background:#0c0c0e;border-top-color:rgba(212,175,55,.18)}
.s-jade h2{color:#fff;font-weight:400;letter-spacing:.1em}
.sec-head.has-seal{position:relative;padding-right:96px}
.seal-stamp{position:absolute;right:0;top:0;width:72px;height:auto;opacity:.92}
.jade-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.tagline{margin:0 0 22px;color:var(--gold-soft);font-size:1.12rem;line-height:1.7;letter-spacing:.04em;padding-bottom:18px;border-bottom:1px solid rgba(212,175,55,.28)}
.jade-list{list-style:none;padding:0;margin:0}
.jade-list li{position:relative;display:grid;grid-template-columns:4.6em 1fr;column-gap:6px;align-items:baseline;padding:12px 0 12px 18px;border-bottom:1px solid rgba(212,175,55,.12);color:#f2f2f2;line-height:1.75}
.jade-list li:last-child{border-bottom:0}
.jade-list li::before{content:"";position:absolute;left:0;top:1.35em;width:8px;height:1px;background:var(--gold)}
.jl-k{display:block;color:var(--gold-2);font-size:.78em;letter-spacing:.16em}

.posts{border:1px solid rgba(212,175,55,.28);border-radius:var(--radius);overflow:hidden;background:#0e0e10}
.posts-head{margin:0;padding:12px 16px;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-2);border-bottom:1px solid rgba(212,175,55,.22);background:rgba(212,175,55,.04)}
.posts a{display:flex;align-items:baseline;gap:14px;padding:13px 16px;color:#fff;text-decoration:none;border-bottom:1px solid rgba(212,175,55,.1);font-size:.95em;letter-spacing:.03em}
.posts a:last-child{border-bottom:0}
.posts a::after{content:"↗";margin-left:auto;color:var(--gold-2);font-size:.85em;opacity:.85}
.posts a:hover{color:var(--gold-soft);background:rgba(212,175,55,.04)}
.posts .k{flex:0 0 auto;font-size:.7em;letter-spacing:.18em;color:var(--gold-2);min-width:2.8em}
.posts .t{flex:1 1 auto}

.jade-cta{margin-top:36px;padding:22px 24px;border:1px solid rgba(212,175,55,.35);border-radius:var(--radius);background:linear-gradient(135deg,rgba(212,175,55,.06),transparent 60%);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.jc-line{margin:0;color:#e8e8ea;letter-spacing:.04em}
.jc-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.jc-dm{font-size:.95rem;letter-spacing:.18em;color:var(--gold);font-weight:500;padding:8px 14px;border:1px solid rgba(212,175,55,.45);border-radius:8px}

/* Studio principles */
.s-studio{background:transparent}
.principles{list-style:none;padding:0;margin:8px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.principles li{padding:20px 18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;gap:6px}
.pr-no{font-size:.7rem;letter-spacing:.2em;color:var(--muted)}
.principles strong{font-size:1.05rem}
.principles span:last-child{color:#c4c4cc;font-size:.92rem;line-height:1.65}

/* ===== Footer ===== */
.site-footer{margin-top:0;border-top:0;padding:0 0 40px;font-size:.88em;color:var(--muted)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px 24px;padding-top:40px;padding-bottom:28px}
.foot-brand .wordmark{margin-bottom:14px}
.foot-wordmark{width:220px;max-width:100%;height:auto}
.foot-tag{margin:0 0 10px;color:#c4c4cc}
.foot-reg{margin:0;font-size:.9em;line-height:1.65;max-width:28em}
.foot-reg .en{display:block;color:var(--muted);font-size:.92em;margin-top:2px}
.fc-head{margin:0 0 10px;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:#fff}
.foot-col{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.foot-col a{color:var(--muted);text-decoration:none}
.foot-col a:hover{color:#fff}
.foot-col a.fl-jump:hover{color:var(--blue-2)}
.foot-col a.fl-jade:hover{color:var(--gold)}
.studio-facts{margin:0;padding:0}
.studio-facts div{margin:0 0 10px}
.studio-facts dt{font-size:.72rem;letter-spacing:.1em;color:var(--muted);margin:0 0 2px}
.studio-facts dd{margin:0;color:#d0d0d6}
.foot-base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;padding-top:18px;border-top:1px solid var(--line);font-size:.85em}
.foot-base p{margin:0}

/* Legacy footer (legal pages) */
.footer{border-top:1px solid var(--line);margin-top:48px;padding:28px 0 44px;font-size:.88em;color:var(--muted);text-align:center}
.footer p{margin:5px 0}
.footer strong{letter-spacing:.1em;color:#fff}

/* ===== Docs (terms / privacy) ===== */
.doc{padding-bottom:24px}
.doc h1{font-size:1.55rem;line-height:1.35;margin:10px 0 0;color:var(--blue-2);font-weight:600}
.doc h2{font-size:1.08rem;margin:34px 0 8px;padding-top:16px;border-top:1px solid var(--line);color:#fff}
.doc ul{padding-left:1.2em}
.doc li::marker{color:var(--blue)}
.back{margin:24px 0 0;font-size:.9em}
.scope{margin:4px 0 0;font-size:.85em;color:var(--muted)}
.banner{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:var(--radius);padding:12px 16px;margin:20px 0 8px;font-size:.92em;color:#efe3b8}
.banner strong{color:#f5dd8a}
.banner p{margin:4px 0}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.92em;background:var(--panel)}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--panel-2);color:#fff}

/* Legacy card helpers (kept for any residual markup / regenerator safety) */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;margin:28px 0}
.card.jump{border-color:var(--blue-dim);border-top:2px solid var(--blue)}
.card.jade{border-color:var(--gold-dim);border-top:2px solid var(--gold);background:#0e0e10}


/* Nav current page */
.mast-nav a.is-current{color:#fff;border-color:var(--line)}
.mast-nav a.n-jump.is-current{color:var(--blue-2);border-color:var(--blue-2)}
.mast-nav a.n-jade.is-current{color:var(--gold);border-color:var(--gold)}

/* Hub: three pillar cards */
.pillars-3{grid-template-columns:repeat(3,1fr);max-width:960px}
.p-shop .p-seal{display:none}

/* Sub-page hero section (first block under masthead) */
.page-hero-sec{border-top:0;padding-top:clamp(36px,6vw,56px)}
.page-skating{background:
  radial-gradient(900px 420px at 12% -8%,rgba(59,130,246,.07),transparent 55%),
  var(--bg)}
.page-shop{background:
  radial-gradient(800px 480px at 88% 0%,rgba(212,175,55,.06),transparent 50%),
  var(--bg)}
.s-tech h1{margin:0;font-size:clamp(1.55rem,3.2vw,2rem);line-height:1.3;font-weight:600;color:var(--blue-2)}
.s-jade h1{margin:0;font-size:clamp(1.55rem,3.2vw,2rem);line-height:1.3;font-weight:400;letter-spacing:.1em;color:#fff}
.s-tech .tech-cols h2,.s-tech > .wrap-wide > h2{font-size:.95rem;margin:32px 0 10px;letter-spacing:.06em;font-weight:600;color:var(--blue-2);border-left:2px solid var(--blue);padding-left:10px}
.shop-hint{margin:18px 0 0;font-size:.9em;color:var(--muted)}
.shop-hint a{color:var(--gold-soft)}
.shop-hint a:hover{color:var(--gold)}

/* ===== Jade teaching: parchment cream + leaf green =====
   Design choice (2026-10-05): keep black studio masthead/footer chrome;
   main content is full parchment (米色羊皮) with leaf-green text per marketing
   dual set. Gold seal retained as brand accent. Product/shop stays gold-on-black. */
body.page-learn{background:var(--bg)}
.learn-main{background:var(--cream);color:var(--cream-ink);border-bottom:1px solid var(--cream-2)}
.learn-hero{padding:clamp(36px,6vw,56px) 0 8px}
.learn-head .sec-no{color:var(--leaf-soft)}
.learn-head h1{margin:0;font-size:clamp(1.55rem,3.2vw,2rem);line-height:1.3;font-weight:500;letter-spacing:.08em;color:var(--leaf-2)}
.learn-head .subtitle-en{color:var(--leaf-soft)}
.learn-lead{margin:8px 0 0;max-width:28em;font-size:1.08rem;line-height:1.75;color:var(--leaf);letter-spacing:.03em}
.learn-body{padding:12px 0 clamp(48px,8vw,72px)}
.learn-h2{margin:28px 0 14px;font-size:.85rem;letter-spacing:.18em;text-transform:uppercase;color:var(--leaf-soft);font-weight:600;border:0;padding:0}
.learn-topics{list-style:none;padding:0;margin:0 0 32px;display:grid;gap:0}
.learn-topics li{display:grid;grid-template-columns:4.6em 1fr;gap:10px;padding:14px 0;border-bottom:1px solid var(--leaf-line);align-items:baseline}
.learn-topics li:last-child{border-bottom:0}
.lt-k{font-size:.78em;letter-spacing:.16em;color:var(--leaf);font-weight:600}
.lt-t{color:var(--cream-ink);line-height:1.7}
.learn-posts{border:1px solid var(--leaf-line);border-radius:var(--radius);overflow:hidden;background:rgba(255,255,255,.35);margin-bottom:28px}
.learn-posts .posts-head{margin:0;padding:12px 16px;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--leaf);border-bottom:1px solid var(--leaf-line);background:rgba(45,90,61,.06)}
.learn-posts a{display:flex;align-items:baseline;gap:14px;padding:13px 16px;color:var(--leaf-2);text-decoration:none;border-bottom:1px solid var(--leaf-line);font-size:.95em;letter-spacing:.03em}
.learn-posts a:last-child{border-bottom:0}
.learn-posts a::after{content:"↗";margin-left:auto;color:var(--leaf-soft);font-size:.85em}
.learn-posts a:hover{color:var(--leaf);background:rgba(45,90,61,.05)}
.learn-posts a:focus-visible{outline:2px solid var(--leaf);outline-offset:-2px}
.learn-posts .k{flex:0 0 auto;font-size:.7em;letter-spacing:.18em;color:var(--leaf-soft);min-width:2.8em}
.learn-posts .t{flex:1 1 auto}
.learn-next{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;border:1px solid var(--leaf-line);border-radius:var(--radius);background:rgba(255,255,255,.4)}
.learn-next p{margin:0;color:var(--cream-ink)}
.btn.learn-btn{background:var(--leaf);color:#f7f3e8;border-color:var(--leaf);font-weight:600}
.btn.learn-btn:hover{background:var(--leaf-2);color:#fff}
body.page-learn .site-footer{background:var(--bg)}
body.page-learn a:focus-visible{outline-color:var(--leaf)}


/* Jade product catalog (shop) */
.catalog{margin-top:44px}
.catalog-head{margin-bottom:22px}
.catalog-kicker{display:inline-block;margin:0 0 8px;padding:0;border:0;background:transparent;letter-spacing:.2em}
.catalog h2{margin:0 0 8px;font-size:clamp(1.15rem,2.4vw,1.35rem);font-weight:400;letter-spacing:.12em;color:#fff}
.catalog-lead{margin:0;max-width:36em;color:#c4c4cc;line-height:1.7;letter-spacing:.03em}
.piece-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.piece-card{display:flex;flex-direction:column;background:#0e0e10;border:1px solid rgba(212,175,55,.28);border-top:2px solid var(--gold);border-radius:var(--radius);overflow:hidden}
.piece-photo{display:block;background:#0a0a0b;aspect-ratio:4/5;overflow:hidden}
.piece-photo img{width:100%;height:100%;object-fit:contain;object-position:center;display:block}
.piece-body{display:flex;flex-direction:column;gap:12px;padding:16px 16px 18px;flex:1}
.piece-title{margin:0;font-size:1.02rem;font-weight:500;letter-spacing:.08em;color:#fff;line-height:1.45}
.piece-bullets{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.piece-bullets li{position:relative;padding-left:14px;color:#e4e4e8;font-size:.9rem;line-height:1.6;letter-spacing:.02em}
.piece-bullets li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:1px;background:var(--gold)}
.piece-meta{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding-top:4px}
.piece-ig{color:var(--gold-2);text-decoration:none;font-size:.85rem;letter-spacing:.06em}
.piece-ig:hover{color:var(--gold)}

/* ===== Responsive ===== */
@media (min-width:821px) and (max-width:1100px){
  .piece-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:820px){
  .pillars,.pillars-3,.tech-grid,.tech-cols,.jade-grid,.principles,.foot-grid,.piece-grid{grid-template-columns:1fr}
  .learn-topics li{grid-template-columns:4em 1fr}
  .foot-grid{gap:28px}
  .mast-nav{gap:14px;font-size:.82rem}
  .jade-cta{align-items:flex-start}
}
@media (max-width:560px){
  .m-br{display:inline}
  .masthead{position:static}
  .section{scroll-margin-top:0}
  .mast-inner{flex-direction:column;align-items:flex-start;gap:10px;padding-top:12px;padding-bottom:12px}
  .wm-label{font-size:.6rem;letter-spacing:.14em}
  .seal-stamp{width:56px}
  .jade-list li{grid-template-columns:4em 1fr}
  .sec-head.has-seal{padding-right:70px}
  .hero{padding-top:36px}
  .ht-zh{font-size:1.7rem}
  .btn{flex:1 1 100%}
  .actions{flex-direction:column}
  .jc-dm{letter-spacing:.12em}
  .foot-base{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .pillar{transition:none}
}

.piece-price{margin:10px 0 0;font-size:1.05rem;letter-spacing:.08em;color:var(--gold);font-weight:500}