/* =====================================================================
   DesignJarvis · 品牌首頁樣式
   ---------------------------------------------------------------------
   1. 色彩 / 字體 / 間距 token（修改品牌色只需改這裡）
   2. 基礎與排版
   3. 導覽列 Nav
   4. 按鈕 Buttons / CTA
   5. Hero
   6. 通用 Section / 玻璃卡片 / 進場動畫
   7. 各區塊版面
   8. 響應式 RWD
   ===================================================================== */

/* ============ 1. TOKENS ============ */
:root{
  /* 主背景色 */
  --bg-0:#050505;  --bg-1:#0B0B0B;  --bg-2:#111111;
  /* 品牌暖棕色 */
  --brown:#BB9577; --brown-2:#C09A7A; --brown-3:#B88E6D;
  /* 技術深灰色 */
  --gray:#5F5F5F;  --gray-2:#666666; --gray-3:#3F3F3F;
  /* 精品金色點綴 */
  --gold:#D6C15A;  --gold-2:#C5B450; --gold-3:#EFE6A0;
  /* 文字 */
  --tx:#F5F5F5;    --tx-2:#A8A8A8;  --tx-3:#777777;
  /* 玻璃 / 線條 */
  --glass:rgba(255,255,255,.025);
  --glass-2:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.08);
  --line-brown:rgba(187,149,119,.30);
  /* 字體 */
  --display:'Sora','Noto Sans TC',sans-serif;
  --body:'Manrope','Noto Sans TC',sans-serif;
  /* 版面 */
  --maxw:1220px;
  --pad:clamp(20px,5vw,72px);
  --radius:18px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ============ 2. BASE ============ */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg-0)}
body{
  background:transparent;
  color:var(--tx);
  font-family:var(--body);
  font-weight:300;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:rgba(187,149,119,.35);color:#fff}
/* 全站互動式星座背景 */
#starfield{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad)}

h1,h2,h3,h4{font-family:var(--display);font-weight:600;letter-spacing:-.02em;line-height:1.14}
.eyebrow{
  display:inline-flex;align-items:center;gap:11px;
  font-family:var(--display);font-size:12.5px;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--brown-2);
}
.eyebrow::before{content:"";width:28px;height:1px;background:linear-gradient(90deg,var(--brown),transparent)}
.section-head{max-width:720px;margin-bottom:clamp(38px,5vw,64px)}
.section-head h2{font-size:clamp(28px,4vw,44px);margin:20px 0 18px}
.section-head p{color:var(--tx-2);font-size:clamp(15px,1.4vw,18px);line-height:1.7}
.muted{color:var(--tx-2)}

/* ============ 3. NAV ============ */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad);
  transition:background .4s,backdrop-filter .4s,border-color .4s,padding .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(8,8,8,.62);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  padding-block:13px;
}
.brand{display:flex;align-items:center;gap:12px;z-index:120}
.brand img{width:38px;height:38px;object-fit:contain}
.brand .name{font-family:var(--display);font-weight:600;font-size:19px;letter-spacing:-.01em}
.brand .name span{color:var(--brown-2)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  font-family:var(--display);font-size:14.5px;font-weight:400;color:var(--tx-2);
  position:relative;transition:color .3s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;
  background:var(--brown);transition:width .35s var(--ease);
}
.nav-links a:hover{color:var(--tx)}
.nav-links a:hover::after{width:100%}
.nav-right{display:flex;align-items:center;gap:18px;z-index:120}
.lang-toggle{
  display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;
  font-family:var(--display);font-size:12.5px;
}
.lang-toggle button{
  background:none;border:none;color:var(--tx-3);padding:7px 13px;cursor:pointer;
  transition:.3s;font-family:inherit;letter-spacing:.04em;
}
.lang-toggle button.active{background:var(--brown);color:#1a120c;font-weight:600}
.nav-cta{
  font-family:var(--display);font-size:14px;font-weight:500;
  padding:10px 20px;border-radius:999px;border:1px solid var(--line-brown);
  color:var(--tx);transition:.35s var(--ease);
}
.nav-cta:hover{background:rgba(187,149,119,.12);border-color:var(--brown);
  box-shadow:0 0 24px -6px rgba(214,193,90,.4)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;z-index:120;padding:6px}
.hamburger span{width:24px;height:2px;background:var(--tx);border-radius:2px;transition:.35s var(--ease)}
.nav-open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .hamburger span:nth-child(2){opacity:0}
.nav-open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 4. BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 28px;border-radius:999px;
  font-family:var(--display);font-weight:500;font-size:14.5px;
  cursor:pointer;transition:.4s var(--ease);border:1px solid transparent;white-space:nowrap;
}
.btn .arr{transition:transform .4s var(--ease)}
.btn:hover .arr{transform:translateX(5px)}
.btn-primary{
  background:linear-gradient(180deg,var(--brown-2),var(--brown-3));color:#1a120c;
  box-shadow:0 1px 0 rgba(255,255,255,.15) inset;
}
.btn-primary:hover{
  box-shadow:0 10px 40px -8px rgba(187,149,119,.6),0 0 34px -4px rgba(214,193,90,.5),0 1px 0 rgba(255,255,255,.2) inset;
  transform:translateY(-2px);
}
.btn-ghost{
  background:var(--glass);border-color:var(--line-brown);color:var(--tx);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--brown);background:rgba(187,149,119,.10);
  box-shadow:0 0 28px -8px rgba(214,193,90,.4);transform:translateY(-2px)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--display);
  font-size:14px;font-weight:500;color:var(--brown-2);transition:.35s;
}
.btn-text .arr{transition:transform .35s var(--ease)}
.btn-text:hover{color:var(--gold-3)}
.btn-text:hover .arr{transform:translateX(5px)}

/* ============ 5. HERO ============ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;isolation:isolate;background:var(--bg-0)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero .hero-veil{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 90% at 18% 50%,rgba(5,5,5,.92) 28%,rgba(5,5,5,.35) 60%,transparent 100%)}
.hero .hero-grain{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.55;mix-blend-mode:overlay;
  background:radial-gradient(circle at 50% 40%,transparent 55%,rgba(0,0,0,.7) 100%)}
.hero .wrap{position:relative;z-index:3;width:100%;padding-top:90px;padding-bottom:60px}
.hero-copy{max-width:610px}
.hero h1{font-size:clamp(38px,6.2vw,76px);margin:26px 0 28px;font-weight:600}
.hero h1 .grad{background:linear-gradient(120deg,var(--tx),var(--brown-2));-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:clamp(16px,1.5vw,19px);color:var(--tx-2);max-width:500px;margin-bottom:38px;line-height:1.75}
.hero-btns{display:flex;gap:15px;flex-wrap:wrap}
.hero-meta{display:flex;gap:38px;margin-top:54px;flex-wrap:wrap}
.hero-meta .item .k{font-family:var(--display);font-size:clamp(26px,2.6vw,34px);font-weight:600;color:var(--tx);white-space:nowrap}
.hero-meta .item .v{font-size:13px;color:var(--tx-3);letter-spacing:.04em;margin-top:3px}
.hero-node-label{position:absolute;font-family:var(--display);font-size:12.5px;letter-spacing:.04em;
  color:var(--tx-2);pointer-events:none;z-index:4;white-space:nowrap;transform:translate(-50%,-50%);
  text-shadow:0 2px 10px rgba(0,0,0,.8)}
.hero-node-label b{color:var(--brown-2);font-weight:600}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:9px;color:var(--tx-3);
  font-family:var(--display);font-size:11px;letter-spacing:.24em}
.scroll-hint .mouse{width:22px;height:34px;border:1.5px solid var(--line-brown);border-radius:12px;position:relative}
.scroll-hint .mouse::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:6px;border-radius:2px;
  background:var(--brown);transform:translateX(-50%);animation:scrollDot 1.8s var(--ease) infinite}
@keyframes scrollDot{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}80%{opacity:0;transform:translate(-50%,10px)}}

/* ============ 6. SECTION + GLASS + REVEAL ============ */
section{position:relative;z-index:1}
.hero{z-index:1}
.band{padding-block:clamp(72px,10vw,140px)}
.band-1{background:rgba(255,255,255,.014)}
.band-deep{background:transparent}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  position:relative;overflow:hidden;
}
.glass::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(160deg,rgba(255,255,255,.06),transparent 40%)}
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ============ 7. LAYOUTS ============ */

/* 7.1 品牌一句話 statement */
.statement{text-align:center;max-width:980px;margin:0 auto}
.statement h2{font-size:clamp(30px,5vw,60px);font-weight:600;line-height:1.2}
.statement h2 .hl{color:var(--brown-2)}
.statement p{color:var(--tx-2);font-size:clamp(15px,1.5vw,19px);max-width:640px;margin:28px auto 0;line-height:1.8}

/* 7.2 兩大核心 capability */
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.cap-card{padding:clamp(28px,3.4vw,46px);transition:.5s var(--ease)}
.cap-card:hover{border-color:var(--line-brown);transform:translateY(-4px);
  box-shadow:0 30px 70px -34px rgba(187,149,119,.35)}
.cap-icon{width:58px;height:58px;border-radius:15px;display:grid;place-items:center;margin-bottom:24px;
  background:linear-gradient(160deg,rgba(187,149,119,.22),rgba(187,149,119,.06));border:1px solid var(--line-brown)}
.cap-icon svg{width:28px;height:28px;stroke:var(--brown-2);fill:none;stroke-width:1.6}
.cap-card h3{font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
.cap-card>p{color:var(--tx-2);font-size:15.5px;line-height:1.75;margin-bottom:24px}
.cap-list{list-style:none;display:flex;flex-direction:column;gap:1px;border-top:1px solid var(--line)}
.cap-list li{display:flex;align-items:center;gap:13px;padding:13px 2px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--tx);transition:.3s}
.cap-list li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brown);flex:none;
  box-shadow:0 0 0 4px rgba(187,149,119,.12)}
.cap-card:hover .cap-list li{padding-left:6px}

/* 7.3 產品矩陣 product grid */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod-card{
  display:flex;flex-direction:column;padding:30px 28px 26px;min-height:268px;
  transition:.5s var(--ease);
}
.prod-card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;
  transition:opacity .5s;box-shadow:0 0 0 1px var(--line-brown) inset,0 34px 80px -40px rgba(187,149,119,.5)}
.prod-card:hover{transform:translateY(-6px);background:var(--glass-2)}
.prod-card:hover::after{opacity:1}
.prod-card .pc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.prod-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(187,149,119,.20),rgba(187,149,119,.05));border:1px solid var(--line-brown);
  transition:.5s var(--ease)}
.prod-icon svg{width:23px;height:23px;stroke:var(--brown-2);fill:none;stroke-width:1.6}
.prod-card:hover .prod-icon{box-shadow:0 0 22px -4px rgba(214,193,90,.5)}
.pc-tag{font-family:var(--display);font-size:11.5px;letter-spacing:.06em;color:var(--tx-3);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.prod-card h3{font-size:22px;margin-bottom:11px}
.prod-card .pc-desc{color:var(--tx-2);font-size:14px;line-height:1.7;flex:1;margin-bottom:20px}
.prod-card .btn-text{margin-top:auto}

/* 7.4 案例 case studies */
.case-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.case-card{grid-column:span 2;display:flex;flex-direction:column;transition:.5s var(--ease)}
.case-card:nth-child(1),.case-card:nth-child(2){grid-column:span 3}
.case-card:hover{transform:translateY(-5px)}
.case-card:hover{border-color:var(--line-brown);box-shadow:0 32px 70px -38px rgba(187,149,119,.4)}
.case-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.case-card:nth-child(1) .case-media,.case-card:nth-child(2) .case-media{aspect-ratio:16/9}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.06)}
.case-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:
    linear-gradient(135deg,rgba(187,149,119,.10),rgba(11,11,11,.4)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.012) 0 12px,transparent 12px 24px);
  color:var(--tx-3)}
.case-ph svg{width:38px;height:38px;stroke:var(--brown-3);fill:none;stroke-width:1.3;opacity:.8}
.case-ph span{font-family:var(--display);font-size:11.5px;letter-spacing:.18em;text-transform:uppercase}
.case-media .case-type{position:absolute;top:14px;left:14px;z-index:2;font-family:var(--display);font-size:11.5px;
  letter-spacing:.04em;color:var(--tx);background:rgba(8,8,8,.55);backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:999px;padding:6px 13px}
.case-body{padding:24px 24px 22px;display:flex;flex-direction:column;gap:11px}
.case-body .case-prod{font-family:var(--display);font-size:12px;letter-spacing:.05em;color:var(--brown-2)}
.case-body h3{font-size:20px}
.case-body p{color:var(--tx-2);font-size:14px;line-height:1.65}
.case-body .btn-text{margin-top:6px}

/* 7.5 流程 timeline */
.flow{position:relative}
.flow-track{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:0;margin-top:30px}
.flow-line{position:absolute;top:31px;left:8%;right:8%;height:2px;background:var(--line);z-index:0;border-radius:2px}
.flow-line .fill{position:absolute;inset:0;width:0;background:linear-gradient(90deg,var(--brown),var(--gold));
  box-shadow:0 0 14px rgba(214,193,90,.5);transition:width 1.1s var(--ease);border-radius:2px}
.flow-step{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center;padding:0 12px}
.flow-dot{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:var(--bg-1);
  border:1px solid var(--line);transition:.6s var(--ease);position:relative}
.flow-dot svg{width:26px;height:26px;stroke:var(--gray-2);fill:none;stroke-width:1.6;transition:.5s}
.flow-dot .num{position:absolute;top:-8px;right:-8px;width:24px;height:24px;border-radius:50%;background:var(--bg-2);
  border:1px solid var(--line);font-family:var(--display);font-size:11px;color:var(--tx-3);display:grid;place-items:center;transition:.5s}
.flow-step.on .flow-dot{border-color:var(--brown);background:linear-gradient(160deg,rgba(187,149,119,.3),rgba(187,149,119,.08));
  box-shadow:0 0 0 6px rgba(187,149,119,.08),0 0 30px -4px rgba(214,193,90,.55)}
.flow-step.on .flow-dot svg{stroke:var(--gold-3)}
.flow-step.on .flow-dot .num{border-color:var(--brown);color:var(--brown-2)}
.flow-step h4{font-size:16.5px;margin:18px 0 8px}
.flow-step p{font-size:13px;color:var(--tx-2);line-height:1.6;max-width:170px}
.flow-step.on h4{color:var(--tx)}

/* 7.6 價值 values */
.val-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.val-card{padding:clamp(28px,3vw,40px);transition:.5s var(--ease);display:flex;flex-direction:column}
.val-card:hover{border-color:var(--line-brown);transform:translateY(-4px);
  box-shadow:0 30px 70px -38px rgba(187,149,119,.35)}
.val-num{font-family:var(--display);font-size:13px;font-weight:600;letter-spacing:.2em;color:var(--brown-2);margin-bottom:22px}
.val-card h3{font-size:clamp(19px,2vw,23px);line-height:1.4;margin-bottom:16px}
.val-card p{color:var(--tx-2);font-size:14.5px;line-height:1.75}
.val-card .val-bar{height:2px;width:42px;background:linear-gradient(90deg,var(--brown),var(--gold));margin-bottom:24px;border-radius:2px;
  transition:width .6s var(--ease)}
.val-card:hover .val-bar{width:72px}

/* 7.7 適合對象 audience */
.aud-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.aud-card{display:flex;align-items:flex-start;gap:20px;padding:28px 30px;transition:.45s var(--ease)}
.aud-card:hover{border-color:var(--line-brown);background:var(--glass-2);transform:translateX(4px)}
.aud-no{font-family:var(--display);font-size:13px;font-weight:600;color:var(--brown-2);
  border:1px solid var(--line-brown);border-radius:50%;width:40px;height:40px;display:grid;place-items:center;flex:none}
.aud-card p{font-size:16px;color:var(--tx);line-height:1.6}
.aud-card p b{color:var(--brown-2);font-weight:600}

/* 7.8 CTA */
.cta-final{position:relative;overflow:hidden}
.cta-box{position:relative;text-align:center;padding:clamp(48px,7vw,96px) clamp(28px,5vw,80px);overflow:hidden}
.cta-box::before{content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(80% 120% at 50% 0%,rgba(187,149,119,.18),transparent 70%)}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{font-size:clamp(28px,4.4vw,52px);max-width:880px;margin:18px auto 22px}
.cta-box p{color:var(--tx-2);font-size:clamp(15px,1.5vw,18px);max-width:680px;margin:0 auto 38px;line-height:1.75}
.cta-btns{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}
.cta-mail{margin-top:30px;font-family:var(--display);font-size:14px;color:var(--tx-3);letter-spacing:.03em}
.cta-mail a{color:var(--brown-2);border-bottom:1px solid var(--line-brown);padding-bottom:2px;transition:.3s}
.cta-mail a:hover{color:var(--gold-3);border-color:var(--gold)}

/* mid CTA strip */
.cta-strip{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  padding:clamp(28px,3.4vw,44px) clamp(28px,4vw,56px)}
.cta-strip h3{font-size:clamp(20px,2.4vw,28px);max-width:560px}
.cta-strip .muted{font-size:14.5px;margin-top:8px}

/* ============ FOOTER ============ */
.footer{background:rgba(11,11,11,.72);position:relative;z-index:1;border-top:1px solid var(--line);padding:clamp(54px,7vw,80px) 0 36px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand p{color:var(--tx-2);font-size:14px;line-height:1.7;max-width:300px}
.foot-col h5{font-family:var(--display);font-size:13px;letter-spacing:.1em;color:var(--tx-3);
  text-transform:uppercase;margin-bottom:18px}
.foot-col a{display:block;color:var(--tx-2);font-size:14.5px;padding:7px 0;transition:.3s}
.foot-col a:hover{color:var(--brown-2);transform:translateX(3px)}
.foot-contact .fc-item{display:flex;flex-direction:column;gap:4px;padding:9px 0}
.foot-contact .fc-l{font-family:var(--display);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--tx-3)}
.foot-contact .fc-v{color:var(--tx-2);font-size:14px;line-height:1.55}
.foot-contact a{padding:0;display:inline;color:var(--brown-2)}
.foot-contact a:hover{transform:none;color:var(--gold-3)}
.foot-contact .fc-note{color:var(--tx-3);font-size:12.5px;line-height:1.6;margin-top:5px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);color:var(--tx-3);font-size:13px}

/* ============ 8. RWD ============ */
@media(max-width:1024px){
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .case-card,.case-card:nth-child(1),.case-card:nth-child(2){grid-column:span 1}
  .case-card:nth-child(1) .case-media,.case-card:nth-child(2) .case-media{aspect-ratio:16/10}
  .val-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-links{
    position:fixed;inset:0;flex-direction:column;justify-content:center;gap:28px;
    background:rgba(6,6,6,.96);backdrop-filter:blur(20px);
    transform:translateX(100%);transition:transform .45s var(--ease);
  }
  .nav-links a{font-size:22px;color:var(--tx)}
  .nav-open .nav-links{transform:none}
  .hamburger{display:flex}
  .nav-cta{display:none}
  .cap-grid{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .aud-grid{grid-template-columns:1fr}
  .hero .hero-veil{background:linear-gradient(180deg,rgba(5,5,5,.55),rgba(5,5,5,.92))}
  .hero-meta{gap:26px}
  /* timeline -> vertical */
  .flow-track{grid-template-columns:1fr;gap:0}
  .flow-line{left:30px;right:auto;top:8%;bottom:8%;width:2px;height:auto}
  .flow-line .fill{width:2px!important;height:0;transition:height 1.1s var(--ease)}
  .flow-step{flex-direction:row;align-items:flex-start;text-align:left;gap:22px;padding:18px 0}
  .flow-step p{max-width:none}
  .foot-grid{grid-template-columns:1fr}
}