/* ============================================================
   伦琴之光 LuminaryX · 官网样式（黑金）
   ============================================================ */
:root{
  /* 黑金主色 */
  --ink:#16130c; --ink-2:#241f16; --ink-soft:#5b5344; --muted:#8d8574;
  --gold:#c6a15b; --gold-deep:#a9812f; --gold-strong:#b8892b; --gold-bright:#e0c178;
  --gold-light:#f7f0e1; --gold-line:#e8dcc0; --gold-glow:rgba(198,161,91,.22);
  --bg:#ffffff; --bg-warm:#faf7f0; --bg-dark:#14110b; --bg-dark-2:#1c1810;
  --line:#ece5d6; --line-dark:#2c2417;
  --gold-grad:linear-gradient(135deg,#e6cb8c,#c6a15b 46%,#a9812f);
  --amber:#f7f0e1; --amber-line:#e8dcc0;
  --radius:16px; --radius-sm:11px;
  --shadow:0 6px 24px rgba(60,48,20,.08);
  --shadow-lg:0 20px 52px rgba(50,40,15,.16);
  --maxw:1160px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.68;-webkit-font-smoothing:antialiased;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--gold-deep);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.24;margin:0 0 .5em;font-weight:700;letter-spacing:-.012em;color:var(--ink)}
h1{font-size:clamp(2rem,4.3vw,3.05rem)}
h2{font-size:clamp(1.45rem,2.7vw,2.05rem)}
h3{font-size:1.16rem}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.sec{padding:92px 0}
.sec-sm{padding:62px 0}
.sec-soft{background:var(--bg-warm);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.center{text-align:center}
.lead{font-size:1.09rem;color:var(--ink-soft);max-width:740px}
.center .lead{margin-left:auto;margin-right:auto}
.muted{color:var(--muted);font-size:.9rem}
.sec-head{max-width:780px;margin:0 auto 44px}
.sec-head.center{margin-left:auto;margin-right:auto}
.eyebrow{display:inline-block;background:var(--gold-light);color:var(--gold-deep);
  font-size:.77rem;font-weight:700;padding:6px 14px;border-radius:20px;letter-spacing:.08em;margin-bottom:16px;
  border:1px solid var(--gold-line)}
.eyebrow.amber{background:var(--gold-light);color:var(--gold-deep)}

/* ---------- prototype bar ---------- */
.demo-bar{background:var(--gold-light);border-bottom:1px solid var(--gold-line);color:#8a6d2f;
  font-size:.78rem;text-align:center;padding:7px 14px;letter-spacing:.01em}
.demo-bar strong{color:#6b5018}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(170%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--ink);white-space:nowrap}
.brand:hover{text-decoration:none}
.brand img.logo{height:38px;width:auto;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-size:1.06rem}
.brand-text em{font-style:normal;font-size:.66rem;letter-spacing:.22em;color:var(--gold-deep);font-weight:700;text-transform:uppercase}
.nav-links{display:flex;gap:3px;margin-left:auto;align-items:center;flex-wrap:wrap}
.nav-links a{color:var(--ink-soft);font-size:.9rem;padding:8px 13px;border-radius:9px;font-weight:500}
.nav-links a:hover,.nav-links a.active{background:var(--gold-light);color:var(--gold-deep);text-decoration:none}
.nav-cta{background:var(--gold-grad);color:#1c1608 !important;padding:9px 18px !important;border-radius:9px;font-weight:700}
.nav-cta:hover{filter:brightness(1.05);color:#1c1608}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;
  font-size:1.15rem;line-height:1;padding:8px 12px;cursor:pointer;color:var(--ink-soft)}

/* ---------- buttons ---------- */
.btn{display:inline-block;padding:13px 24px;border-radius:11px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:.18s;text-align:center;font-family:var(--font)}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--gold-grad);color:#1c1608;font-weight:700;box-shadow:0 8px 22px var(--gold-glow)}
.btn-primary:hover{filter:brightness(1.05)}
.btn-ghost{background:#fff;color:var(--gold-deep);border-color:var(--gold-line)}
.btn-ghost:hover{border-color:var(--gold);background:var(--gold-light)}
.btn-dark{background:var(--ink);color:#f4ecd9}
.btn-dark:hover{background:#000}
.btn-block{display:block;width:100%}
.btn-lg{padding:15px 32px;font-size:1rem}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- hero (dark) ---------- */
.hero{background:radial-gradient(120% 120% at 82% 6%,#2a2314 0%,#14110b 52%,#0e0c08 100%);
  padding:84px 0 72px;position:relative;overflow:hidden;color:#efe8d8}
.hero::after{content:"";position:absolute;right:-160px;top:-160px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,161,91,.20),transparent 66%);z-index:0}
.hero::before{content:"";position:absolute;left:-120px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,161,91,.10),transparent 70%);z-index:0}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.28fr .72fr;gap:54px;align-items:center}
.hero h1{color:#fff;margin-bottom:.35em;white-space:nowrap;font-size:clamp(1.2rem,4vw,2.95rem)}
.hero h1 b{color:var(--gold-bright);font-weight:800}
.hero p.lead{font-size:.93rem;color:#c9c1ad}
.hero .eyebrow{background:rgba(198,161,91,.13);border-color:rgba(198,161,91,.34);color:var(--gold-bright)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .btn-ghost{background:transparent;color:#efe8d8;border-color:rgba(198,161,91,.5)}
.hero .btn-ghost:hover{background:rgba(198,161,91,.12);border-color:var(--gold)}
.hero-note{margin-top:18px;font-size:.85rem;color:#9a9280}
.hero-visual{position:relative}
.frame{background:#17130c;border-radius:14px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid #332a19}
.frame .bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#1f1911;border-bottom:1px solid #332a19}
.frame .dot3{width:10px;height:10px;border-radius:50%;background:#4a4030}
.frame .dot3.r{background:#c9803f}.frame .dot3.y{background:#c6a15b}.frame .dot3.g{background:#8a7a4a}
.frame .tab{margin-left:12px;font-size:.72rem;color:#a89d84;background:#14110b;border:1px solid #332a19;
  padding:3px 12px;border-radius:7px;font-family:var(--font)}
.frame img{width:100%;display:block}
.hero-badge{position:absolute;background:#fff;border:1px solid var(--gold-line);border-radius:12px;
  box-shadow:var(--shadow-lg);padding:12px 16px;font-size:.82rem;display:flex;gap:10px;align-items:center}
.hero-badge .k{font-weight:800;color:var(--gold-deep);font-size:1.15rem;line-height:1}
.hero-badge .l{color:var(--muted);font-size:.74rem}
.hero-badge.b1{left:-22px;bottom:34px}
.hero-badge.b2{right:-16px;top:-18px}

/* ---------- stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--gold-line);
  border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.stats div{padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
.stats div:last-child{border-right:none}
.stats .n{font-size:1.5rem;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.stats .t{font-size:.83rem;color:var(--muted);margin-top:4px}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:.2s;box-shadow:0 2px 10px rgba(60,48,20,.04);position:relative}
.card:hover{box-shadow:var(--shadow);border-color:var(--gold-line);transform:translateY(-3px)}
.card .ico{width:44px;height:44px;border-radius:12px;background:var(--gold-light);display:grid;place-items:center;
  font-size:21px;margin-bottom:16px;border:1px solid var(--gold-line)}
.card p{margin-bottom:0;color:var(--ink-soft);font-size:.94rem}
.card .more{display:inline-block;margin-top:16px;font-weight:600;font-size:.9rem}

/* product cards */
.pcard{display:flex;flex-direction:column;overflow:hidden;padding:0}
.pcard .shot{background:#17130c;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.pcard .shot img{width:100%;height:100%;object-fit:cover;object-position:top left}
.pcard .body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.pcard .kicker{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.pcard h3{margin-bottom:.15em}
.pcard .en{font-size:.8rem;color:var(--muted);margin-bottom:12px;font-weight:500}
.pcard p{font-size:.92rem;color:var(--ink-soft);margin-bottom:16px}
.pcard ul.feat{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-direction:column;gap:7px}
.pcard ul.feat li{font-size:.86rem;color:var(--ink-soft);padding-left:20px;position:relative}
.pcard ul.feat li::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;
  background:var(--gold)}
.pcard .more{margin-top:auto}
.pill{display:inline-block;font-size:.74rem;font-weight:700;padding:3px 11px;border-radius:20px;
  background:var(--gold-light);color:var(--gold-deep);border:1px solid var(--gold-line);margin-bottom:14px}
.pill.cac{background:#f6ece1;color:#946b34;border-color:#eadbc6}
.pill.knee{background:#efece4;color:#4d4839;border-color:#e0dbcc}
.pill.bc{background:var(--gold-light);color:var(--gold-deep);border-color:var(--gold-line)}

.tag{display:inline-block;background:var(--bg-warm);border:1px solid var(--line);color:var(--ink-soft);
  font-size:.78rem;padding:4px 12px;border-radius:20px;margin:0 6px 6px 0}
.tag-teal{background:var(--gold-light);border-color:var(--gold-line);color:var(--gold-deep)}

/* ---------- feature rows ---------- */
.frow{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin-bottom:64px}
.frow:last-child{margin-bottom:0}
.frow.rev .ftext{order:2}
.frow .ftext h3{font-size:1.5rem}
.chk{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:12px}
.chk li{position:relative;padding-left:30px;font-size:.95rem;color:var(--ink-soft)}
.chk li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:6px;
  background:var(--gold-light);color:var(--gold-deep);display:grid;place-items:center;font-size:.8rem;font-weight:800}
.chk li b{color:var(--ink)}

/* ---------- pipeline / steps ---------- */
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(4,1fr)}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-15px;left:20px;width:32px;height:32px;
  border-radius:50%;background:var(--gold-grad);color:#1c1608;display:grid;place-items:center;font-weight:800;font-size:.92rem}
.step h4{margin:18px 0 7px;font-size:1rem}
.step p{font-size:.86rem;color:var(--muted);margin:0}

/* ---------- spec table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;min-width:560px}
table.spec th,table.spec td{text-align:left;padding:15px 20px;border-bottom:1px solid var(--line);vertical-align:top}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:none}
table.spec th{width:210px;color:var(--gold-deep);font-weight:700;background:var(--bg-warm)}
table.spec td{color:var(--ink)}
table.spec code{background:var(--bg-warm);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.86em}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.gallery figure{margin:0}
.gallery figcaption{font-size:.84rem;color:var(--muted);margin-top:10px;text-align:center}
.shotbox{background:#17130c;border:1px solid #332a19;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.shotbox.wide{grid-column:1/-1}
.shotbox img{width:100%;display:block}

/* ---------- callout ---------- */
.callout{background:var(--gold-light);border:1px solid var(--gold-line);border-radius:var(--radius);
  padding:24px 26px;color:#6b5820;font-size:.92rem}
.callout h4{color:var(--gold-deep);margin-bottom:8px;font-size:.98rem}
.callout p:last-child{margin-bottom:0}
.callout.teal{background:var(--gold-light);border-color:var(--gold-line);color:#6b5820}
.callout.teal h4{color:var(--gold-deep)}

/* ---------- cta band ---------- */
.cta-band{background:radial-gradient(120% 140% at 88% 10%,#2b2313,#14110b 60%);color:#efe8d8;
  border-radius:20px;padding:52px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-lg);border:1px solid #2c2417}
.cta-band h2{color:#fff;margin-bottom:.25em}
.cta-band p{color:#bdb49f;margin:0;max-width:560px}
.cta-band .btn{flex:0 0 auto}

/* ---------- page hero (inner, light) ---------- */
.page-hero{background:linear-gradient(168deg,#fbf7ee,#ffffff 72%);padding:56px 0 48px;border-bottom:1px solid var(--line)}
.page-hero .eyebrow{background:#fff}
.crumb{font-size:.83rem;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.phero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.phero-grid .frame{margin:0}

/* ---------- contact ---------- */
.form{display:grid;gap:16px}
.field label{display:block;font-size:.86rem;font-weight:600;color:var(--ink-soft);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:10px;font-size:.95rem;font-family:var(--font);color:var(--ink);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-glow)}
.field textarea{min-height:120px;resize:vertical}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.info-card h4{font-size:.95rem;margin-bottom:14px}
.info-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.info-list li{display:flex;gap:12px;font-size:.92rem;color:var(--ink-soft)}
.info-list .ic{flex:0 0 34px;height:34px;border-radius:10px;background:var(--gold-light);display:grid;place-items:center;border:1px solid var(--gold-line)}
.todo{font-size:.75rem;color:#946b34;background:#f6ece1;border:1px solid #eadbc6;border-radius:5px;padding:1px 7px;margin-left:6px;font-weight:700}

/* ---------- footer (dark) ---------- */
footer{background:var(--bg-dark);color:#a89d84;padding:58px 0 28px;font-size:.9rem}
footer .fcols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:34px;border-bottom:1px solid var(--line-dark)}
footer h5{color:var(--gold);font-size:.82rem;letter-spacing:.12em;margin:0 0 14px;text-transform:uppercase;font-weight:700}
footer a{color:#a89d84;display:block;padding:4px 0}
footer a:hover{color:var(--gold-bright);text-decoration:none}
.fbrand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.fbrand-chip{display:inline-block;background:#fff;border-radius:12px;padding:11px 16px;box-shadow:0 8px 26px rgba(0,0,0,.45)}
.fbrand-chip img{height:30px;width:auto;display:block}
.fbrand-text p{color:#8c8472;font-size:.86rem;max-width:330px;margin:0}
.fbar{padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:.8rem;color:#7c7462}
.fbar .todo{color:#d9c189;background:rgba(198,161,91,.14);border-color:rgba(198,161,91,.3)}
.fdisc{padding-top:16px;font-size:.78rem;color:#7c7462;line-height:1.75;border-top:1px solid var(--line-dark);margin-top:18px}
footer .todo{color:#d9c189;background:rgba(198,161,91,.14);border-color:rgba(198,161,91,.3)}

/* ---------- clean components (简洁大方) ---------- */
.lead-lg{font-size:clamp(1.15rem,2vw,1.35rem);color:var(--ink-soft);max-width:800px;line-height:1.7}
.center .lead-lg{margin-left:auto;margin-right:auto}
.rule{width:52px;height:3px;background:var(--gold-grad);border-radius:3px;margin:0 auto 22px}
.rule.left{margin-left:0}

/* 编号功能清单 */
.flist{display:grid;grid-template-columns:1fr 1fr;gap:30px 52px;margin-top:6px}
.flist .item{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}
.flist .num{font-size:.92rem;font-weight:800;color:var(--gold-deep);letter-spacing:.04em;padding-top:3px;min-width:26px}
.flist .item h4{margin:0 0 6px;font-size:1.04rem}
.flist .item p{margin:0;font-size:.92rem;color:var(--ink-soft);line-height:1.72}

/* 要点清单（细线） */
.blist{list-style:none;padding:0;margin:14px 0 0}
.blist li{padding:11px 0;border-bottom:1px solid var(--line);font-size:.94rem;color:var(--ink-soft)}
.blist li:first-child{border-top:1px solid var(--line)}
.blist li b{color:var(--ink)}

/* 平台共性 格栅 */
.common{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.common .cell{background:#fff;padding:28px 26px}
.common .cell .lb{display:block;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:700;margin-bottom:10px}
.common .cell p{margin:0;font-size:.89rem;color:var(--ink-soft);line-height:1.72}

/* 应用场景 */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:24px 22px;transition:.2s}
.scene:hover{border-color:var(--gold-line);box-shadow:var(--shadow)}
.scene h4{font-size:1rem;margin-bottom:3px}
.scene .who{font-size:.76rem;color:var(--gold-deep);font-weight:700;letter-spacing:.03em;margin-bottom:9px}
.scene p{font-size:.87rem;color:var(--ink-soft);margin:0;line-height:1.7}

.pcard .tags{margin-top:2px;display:flex;flex-wrap:wrap;gap:6px}
.pcard .tags span{font-size:.75rem;color:var(--ink-soft);background:var(--bg-warm);
  border:1px solid var(--line);padding:3px 10px;border-radius:20px}
.pcard .leadline{font-size:.94rem;color:var(--ink-soft);margin-bottom:14px}
.pcard .body{padding:26px 28px 28px}

/* 首页首排 · 价值主张 */
.promo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.promo{display:block;color:inherit;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 30px;transition:.2s}
.promo:hover{border-color:var(--gold);box-shadow:var(--shadow);transform:translateY(-2px);text-decoration:none}
.promo .kick{display:block;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:700;margin-bottom:12px}
.promo h3{font-size:1.32rem;line-height:1.4;margin-bottom:10px;letter-spacing:-.01em}
.promo p{font-size:.9rem;color:var(--ink-soft);margin:0}
.promo .go{display:inline-block;margin-top:16px;font-size:.84rem;font-weight:600;color:var(--gold-deep)}

/* 客户分层 / 解决方案 */
a.scene{display:block;color:inherit}
a.scene:hover{text-decoration:none;border-color:var(--gold);transform:translateY(-2px)}
.scene .go{display:inline-block;margin-top:14px;font-size:.84rem;font-weight:600;color:var(--gold-deep)}
.scene .idx{font-size:.72rem;font-weight:800;letter-spacing:.16em;color:var(--gold);display:block;margin-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chips span{font-size:.8rem;color:var(--ink-soft);background:var(--bg-warm);border:1px solid var(--line);
  padding:5px 12px;border-radius:20px}
.chips span b{color:var(--gold-deep);font-weight:700}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden}
.duo .col{background:#fff;padding:30px 28px}
.duo .col.warm{background:var(--bg-warm)}
.duo .col h4{margin-bottom:8px}
.duo .col p{margin:0 0 1em;font-size:.92rem;color:var(--ink-soft)}
.duo .col p:last-child{margin-bottom:0}
.sol-idx{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;
  background:var(--gold-light);border:1px solid var(--gold-line);color:var(--gold-deep);
  font-weight:800;font-size:.95rem;margin-right:12px}
.axis{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.axis .tagline{font-size:.86rem;color:var(--ink-soft);background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:10px 16px}
.axis .tagline b{color:var(--gold-deep)}

/* ---------- 平台与技术 · 架构图 ---------- */
.arch{display:grid;grid-template-columns:1fr auto 1.4fr auto 1fr;gap:14px;align-items:center;margin-top:34px}
.arch .node{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center;box-shadow:var(--shadow)}
.arch .node .ico{width:42px;height:42px;border-radius:12px;background:var(--gold-light);display:grid;place-items:center;font-size:20px;margin:0 auto 12px}
.arch .node h4{font-size:.98rem;margin-bottom:6px}
.arch .node p{font-size:.82rem;color:var(--muted);margin:0}
.arch .node.core{background:linear-gradient(150deg,#221c11,#14110b);border:none;color:#fff}
.arch .node.core h4{color:#fff}
.arch .node.core p{color:#e0cfa4}
.arch .node.core .ico{background:rgba(255,255,255,.15)}
.arch .arrow{font-size:1.4rem;color:var(--gold-deep);text-align:center}
@media(max-width:900px){.arch{grid-template-columns:1fr}.arch .arrow{transform:rotate(90deg)}}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid,.phero-grid,.frow,.frow.rev .ftext{grid-template-columns:1fr}
  .frow.rev .ftext{order:0}
  .g3,.g4,.steps{grid-template-columns:repeat(2,1fr)}
  .flist,.common,.scene-grid,.duo,.promo-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats div:nth-child(2){border-right:none}
  .stats div:nth-child(1),.stats div:nth-child(2){border-bottom:1px solid var(--line)}
  footer .fcols{grid-template-columns:1fr 1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 30px}
  .hero-badge{display:none}
}
@media (max-width:680px){
  .nav{height:64px}
  .brand img.logo{height:32px}
  .nav-links{position:fixed;inset:64px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:2px;display:none;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px}
  .nav-toggle{display:block;margin-left:auto}
  .g2,.g3,.g4,.steps,.gallery,.flist,.common,.scene-grid,.duo,.promo-grid{grid-template-columns:1fr}
  .sec{padding:54px 0}
  footer .fcols{grid-template-columns:1fr}
  .shotbox.wide{grid-column:auto}
}