/* ============================================================
   DIEGO TOBON PORTFOLIO — STATIC SITE
   Cyber-Industrial Postmodern Design System
   ============================================================ */

/* --- RESET --- */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

/* --- VARIABLES --- */
:root {
  --bg-void:      #040406;
  --bg-deep:      #08080d;
  --bg-card:      #0e0e14;
  --bg-card-alt:  #121218;

  --green:        #00ff41;
  --green-30:     rgba(0,255,65,.30);
  --green-10:     rgba(0,255,65,.10);
  --green-05:     rgba(0,255,65,.05);
  --cyan:         #00d4ff;
  --cyan-30:      rgba(0,212,255,.30);
  --orange:       #ff6b35;
  --magenta:      #e040a0;

  --txt-hi:       #eaeaf0;
  --txt-mid:      #7a7a90;
  --txt-lo:       #444458;

  --border:       #1c1c26;
  --border-hover: rgba(0,255,65,.25);

  --mono:         'JetBrains Mono','Consolas',monospace;
  --nav-h:        60px;
  --max-w:        1180px;
}

/* --- BASE --- */
html { scroll-behavior:smooth; }

body {
  font-family: var(--mono);
  background: var(--bg-void);
  color: var(--txt-hi);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}

a { color:inherit; text-decoration:none; }
img { max-width:100%; height:auto; display:block; }
button { font-family:var(--mono); }
input, select, textarea { font-family:var(--mono); }

/* ============================================================
   SCANLINES + NOISE OVERLAY
   ============================================================ */
.scanlines {
  position:fixed; inset:0;
  pointer-events:none; z-index:900;
  background:repeating-linear-gradient(
    0deg,
    transparent 0px, transparent 2px,
    rgba(0,0,0,.04) 2px, rgba(0,0,0,.04) 4px
  );
}

/* Subtle grain via SVG filter */
body::after {
  content:'';
  position:fixed; inset:0;
  pointer-events:none; z-index:899;
  opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:256px 256px;
}

/* --- GRID BG --- */
.grid-bg {
  position:fixed; inset:0;
  pointer-events:none; z-index:0;
  background-image:
    linear-gradient(to right,var(--border) 1px,transparent 1px),
    linear-gradient(to bottom,var(--border) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.18;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
header {
  position:fixed; top:0; left:0; width:100%;
  height:var(--nav-h);
  background:rgba(4,4,6,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  z-index:800;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 clamp(16px,4vw,48px);
  transition:border-color .3s;
}
header:hover { border-bottom-color:var(--border-hover); }

/* Logo */
.logo {
  display:flex; align-items:center; gap:10px;
  font-weight:700; font-size:17px;
  letter-spacing:-.5px;
  color:var(--txt-hi); transition:color .3s;
}
.logo:hover { color:var(--green); }

.logo-chevron {
  color:var(--green);
  font-size:20px;
  animation:chevronPulse 2.4s ease-in-out infinite;
}
@keyframes chevronPulse {
  0%,100%{opacity:1} 50%{opacity:.35}
}

/* Nav links */
nav {
  display:flex; align-items:center; gap:28px;
}
nav a {
  font-size:10px; font-weight:600;
  letter-spacing:1.8px; text-transform:uppercase;
  color:var(--txt-mid);
  position:relative; padding:5px 0;
  transition:color .3s;
}
nav a::after {
  content:''; position:absolute;
  bottom:-1px; left:0; width:0; height:1px;
  background:var(--green); transition:width .3s;
}
nav a:hover, nav a.active { color:var(--green); }
nav a:hover::after, nav a.active::after { width:100%; }

/* Social icons */
.hdr-socials {
  display:flex; align-items:center; gap:18px;
}
.hdr-socials a {
  color:var(--txt-mid); transition:color .3s;
  display:flex; align-items:center;
  font-size:15px;
}
.hdr-socials a:hover { color:var(--green); }

/* Mobile toggle */
.menu-btn {
  display:none;
  flex-direction:column; gap:5px;
  cursor:pointer; padding:8px; background:none; border:none;
}
.menu-btn span {
  display:block; width:22px; height:2px;
  background:var(--green); transition:all .3s;
}

/* ============================================================
   MAIN WRAPPER
   ============================================================ */
main { position:relative; z-index:1; padding-top:var(--nav-h); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position:relative;
  min-height:calc(100vh - var(--nav-h));
  display:flex; align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--border);
}

.hero-bg {
  position:absolute; inset:0; z-index:0;
}
.hero-bg img {
  width:100%; height:100%;
  object-fit:cover; opacity:.32;
}
.hero-bg::after {
  content:''; position:absolute; inset:0;
  background:linear-gradient(
    175deg,
    rgba(4,4,6,.55) 0%,
    rgba(4,4,6,.4) 40%,
    rgba(4,4,6,.92) 100%
  );
}

/* Decorative watermark */
.hero-watermark {
  position:absolute; right:-40px; bottom:40px;
  font-size:clamp(80px,16vw,240px);
  font-weight:700;
  color:rgba(0,255,65,.025);
  letter-spacing:-8px;
  text-transform:uppercase;
  pointer-events:none; z-index:0;
  white-space:nowrap;
  line-height:1;
}

.hero-inner {
  position:relative; z-index:1;
  width:100%; max-width:var(--max-w);
  margin:0 auto;
  padding:80px clamp(20px,5vw,48px);
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:48px; align-items:center;
}

/* Status badge */
.badge {
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 14px;
  border:1px solid var(--green-30);
  background:var(--green-10);
  font-size:9.5px; font-weight:700;
  letter-spacing:2px; text-transform:uppercase;
  color:var(--green); margin-bottom:28px;
}
.dot-pulse {
  width:6px; height:6px; border-radius:50%;
  background:var(--green);
  box-shadow:0 0 6px var(--green);
  animation:dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%,100%{opacity:1;box-shadow:0 0 6px var(--green)}
  50%{opacity:.4;box-shadow:0 0 2px var(--green)}
}

/* Hero title */
.hero h1 {
  font-size:clamp(40px,5.8vw,70px);
  font-weight:700; line-height:1.05;
  letter-spacing:-2.5px;
  text-transform:uppercase;
  margin-bottom:22px;
}
.hero h1 .grad {
  background:linear-gradient(135deg,var(--green) 0%,var(--cyan) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.hero p {
  font-size:14px; color:var(--txt-mid);
  max-width:460px; line-height:1.9;
  margin-bottom:36px;
}

/* Buttons */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 26px;
  font-size:10.5px; font-weight:700;
  letter-spacing:1.6px; text-transform:uppercase;
  border:1px solid transparent;
  cursor:pointer; transition:all .3s;
}
.btn-pri {
  background:var(--green); color:var(--bg-void);
  border-color:var(--green);
}
.btn-pri:hover {
  background:transparent; color:var(--green);
  box-shadow:0 0 24px var(--green-30);
}
.btn-out {
  background:transparent; color:var(--txt-hi);
  border-color:var(--border);
}
.btn-out:hover {
  border-color:var(--green); color:var(--green);
}

.hero-btns { display:flex; gap:14px; flex-wrap:wrap; }

/* Stats panel */
.stats-panel {
  display:grid; grid-template-columns:1fr 1fr; gap:14px;
}
.stat-card {
  background:rgba(14,14,20,.7);
  backdrop-filter:blur(8px);
  border:1px solid var(--border);
  padding:22px 20px;
  transition:all .4s; position:relative; overflow:hidden;
}
.stat-card::before {
  content:''; position:absolute;
  top:0; left:0; width:100%; height:2px;
  background:var(--green);
  transform:scaleX(0); transform-origin:left;
  transition:transform .5s;
}
.stat-card:hover::before { transform:scaleX(1); }
.stat-card:hover {
  border-color:var(--border-hover);
  background:var(--green-05);
}
.stat-card.wide { grid-column:1/-1; }

.stat-ico {
  font-size:22px; color:var(--txt-lo);
  margin-bottom:10px; transition:color .3s;
}
.stat-card:hover .stat-ico { color:var(--green); }
.stat-val {
  font-size:26px; font-weight:700;
  letter-spacing:-1px; margin-bottom:3px;
}
.stat-lbl {
  font-size:8.5px; font-weight:700;
  letter-spacing:2px; text-transform:uppercase;
  color:var(--txt-mid);
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  padding:90px clamp(20px,5vw,48px);
  max-width:var(--max-w); margin:0 auto;
}
.section-hdr {
  display:flex; align-items:flex-end;
  justify-content:space-between;
  margin-bottom:56px; padding-bottom:14px;
  border-bottom:1px solid var(--border);
}
.section-hdr h2 {
  font-size:clamp(22px,3vw,28px);
  font-weight:700; letter-spacing:-.5px;
}
.section-hdr h2 .acc { color:var(--green); }
.section-meta {
  font-size:9px; letter-spacing:2px;
  color:var(--txt-lo); text-transform:uppercase;
}

/* ============================================================
   PROJECT CARDS
   ============================================================ */
.cards-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}

.p-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  overflow:hidden; transition:all .4s;
  position:relative; display:block;
}
/* Glow layer */
.p-card::after {
  content:''; position:absolute; inset:0;
  background:linear-gradient(145deg,var(--green-10) 0%,transparent 55%);
  opacity:0; transition:opacity .4s; pointer-events:none; z-index:1;
}
.p-card:hover::after { opacity:1; }
.p-card:hover {
  border-color:var(--border-hover);
  transform:translateY(-3px);
  box-shadow:0 24px 60px rgba(0,0,0,.5),0 0 32px var(--green-30);
}

.p-card-img {
  width:100%; height:195px;
  object-fit:cover;
  filter:brightness(.65) saturate(1.15);
  transition:filter .4s;
}
.p-card:hover .p-card-img { filter:brightness(.85) saturate(1.35); }

.p-card-body { padding:22px; position:relative; z-index:2; }
.p-card-ver {
  font-size:9px; font-weight:700;
  letter-spacing:2px; color:var(--green);
  text-transform:uppercase; margin-bottom:7px;
}
.p-card-title {
  font-size:19px; font-weight:700;
  letter-spacing:-.3px; margin-bottom:9px;
  transition:color .3s;
}
.p-card:hover .p-card-title { color:var(--green); }
.p-card-desc {
  font-size:11.5px; color:var(--txt-mid); line-height:1.75;
}

/* ============================================================
   ABOUT / TECH
   ============================================================ */
.about-wrap {
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,var(--bg-deep) 0%,var(--bg-void) 100%);
}
.about-grid {
  display:grid;
  grid-template-columns:1fr 2fr;
  gap:72px; align-items:start;
}
.about-profile h3 {
  font-size:15px; font-weight:700;
  color:var(--green); letter-spacing:2px;
  text-transform:uppercase; margin-bottom:22px;
}
.about-profile p {
  font-size:12.5px; color:var(--txt-mid);
  line-height:1.95; margin-bottom:14px;
}
.contact-lnk {
  display:inline-flex; align-items:center; gap:6px;
  font-size:11.5px; color:var(--green);
  margin-top:18px; transition:gap .3s;
}
.contact-lnk:hover { gap:14px; }

.tech-lbl {
  font-size:9px; font-weight:700;
  letter-spacing:2px; color:var(--txt-lo);
  text-transform:uppercase;
  margin-bottom:18px; padding-bottom:10px;
  border-bottom:1px solid var(--border);
}
.tech-grid {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}
.tech-tag {
  background:var(--bg-void);
  border:1px solid var(--border);
  padding:15px 10px; text-align:center;
  font-size:10.5px; font-weight:700;
  letter-spacing:.4px;
  color:var(--txt-hi); transition:all .3s;
}
.tech-tag:hover {
  border-color:var(--green);
  color:var(--green);
  background:var(--green-05);
}

/* ============================================================
   PAGE HEADER (detail + contact)
   ============================================================ */
.page-hdr {
  background:linear-gradient(180deg,var(--bg-deep),var(--bg-void));
  border-bottom:1px solid var(--border);
  padding:44px clamp(20px,5vw,48px);
}
.page-hdr-in { max-width:var(--max-w); margin:0 auto; }

.back-lnk {
  display:inline-flex; align-items:center; gap:8px;
  font-size:10px; font-weight:600;
  letter-spacing:1.5px; text-transform:uppercase;
  color:var(--txt-mid); margin-bottom:22px;
  transition:color .3s;
}
.back-lnk:hover { color:var(--green); }

.page-hdr-top {
  display:flex; align-items:flex-end;
  justify-content:space-between; gap:24px; flex-wrap:wrap;
}
.mod-lbl {
  font-size:10px; font-weight:600;
  letter-spacing:2px; color:var(--green);
  text-transform:uppercase; margin-bottom:7px;
}
.page-hdr-top h1 {
  font-size:clamp(30px,4.5vw,50px);
  font-weight:700; text-transform:uppercase;
  letter-spacing:-1px;
}
.page-hdr-right { display:flex; align-items:center; gap:22px; }
.ver-block { text-align:right; }
.ver-lbl {
  font-size:8.5px; letter-spacing:2px;
  color:var(--txt-lo); text-transform:uppercase;
}
.ver-num { font-size:20px; font-weight:700; letter-spacing:-1px; }

/* ============================================================
   PROJECT DETAIL LAYOUT
   ============================================================ */
.detail-wrap {
  max-width:var(--max-w); margin:0 auto;
  padding:60px clamp(20px,5vw,48px);
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:60px; align-items:start;
}

.det-sec-title {
  font-size:15px; font-weight:700;
  color:var(--green); letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:18px; padding-left:14px;
  border-left:2px solid var(--green);
}
.det-desc p {
  font-size:13.5px; color:var(--txt-mid);
  line-height:1.95; margin-bottom:12px;
}

/* Features grid */
.feat-grid {
  display:grid; grid-template-columns:1fr 1fr;
  gap:14px; margin-top:36px;
}
.feat-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  padding:22px; transition:all .3s;
}
.feat-card:hover {
  border-color:var(--border-hover);
  background:var(--green-05);
}
.feat-hdr { display:flex; align-items:center; gap:10px; margin-bottom:8px; }
.feat-check { color:var(--green); font-size:17px; flex-shrink:0; }
.feat-card h4 { font-size:11.5px; font-weight:700; letter-spacing:.3px; }
.feat-card p { font-size:10.5px; color:var(--txt-mid); line-height:1.7; padding-left:27px; }

/* Specs box */
.specs-box {
  background:rgba(8,8,13,.7);
  border:1px solid var(--border);
  padding:30px; margin-top:36px;
}
.specs-box h3 {
  font-size:13px; font-weight:700;
  color:var(--green); letter-spacing:1px;
  text-transform:uppercase; margin-bottom:22px;
}
.specs-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.spec-lbl {
  font-size:8.5px; font-weight:700;
  letter-spacing:2px; color:var(--txt-lo);
  text-transform:uppercase; margin-bottom:5px;
}
.spec-val { font-size:13px; font-weight:700; margin-bottom:2px; }
.spec-sub { font-size:9.5px; color:var(--txt-mid); }

/* Sidebar */
.detail-side { display:flex; flex-direction:column; gap:20px; }

.img-box {
  background:var(--bg-card);
  border:1px solid var(--border);
  overflow:hidden;
}
.img-box img { border-bottom:1px solid var(--border); }
.img-caption {
  padding:9px 14px;
  font-size:8.5px; font-weight:600;
  letter-spacing:1.5px; color:var(--txt-lo);
  text-transform:uppercase; text-align:center;
}

.side-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  padding:22px;
}
.side-card h3 {
  font-size:10px; font-weight:700;
  letter-spacing:1.5px; text-transform:uppercase;
  margin-bottom:10px; padding-bottom:10px;
  border-bottom:1px solid var(--border);
}
.side-card p {
  font-size:10.5px; color:var(--txt-mid);
  line-height:1.7; margin-bottom:14px;
}
.repo-lnk {
  display:flex; align-items:center;
  justify-content:space-between; width:100%;
  padding:11px 15px;
  border:1px solid var(--border);
  font-size:10px; font-weight:600;
  letter-spacing:1px; text-transform:uppercase;
  color:var(--txt-hi); transition:all .3s;
}
.repo-lnk:hover { border-color:var(--green); color:var(--green); }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid {
  display:grid; grid-template-columns:1fr 1fr;
  gap:72px;
}

/* Terminal window chrome */
.terminal {
  background:var(--bg-card);
  border:1px solid var(--border);
  overflow:hidden;
}
.term-hdr {
  background:var(--bg-card-alt);
  border-bottom:1px solid var(--border);
  padding:9px 16px;
  display:flex; align-items:center; gap:7px;
}
.t-dot { width:11px; height:11px; border-radius:50%; }
.t-dot.r{background:#ff5f57} .t-dot.y{background:#ffbd2e} .t-dot.g{background:var(--green)}
.term-path {
  margin-left:auto; font-size:9.5px;
  color:var(--txt-lo); letter-spacing:.8px;
}
.term-body { padding:30px 26px; }

/* Form */
.fg { margin-bottom:22px; }
.fg label {
  display:block; font-size:9px; font-weight:700;
  letter-spacing:2px; color:var(--green);
  text-transform:uppercase; margin-bottom:7px;
}
.fg input, .fg select, .fg textarea {
  width:100%; background:var(--bg-void);
  border:1px solid var(--border);
  color:var(--txt-hi); font-size:12px;
  padding:11px 15px; outline:none;
  transition:border-color .3s;
}
.fg input:focus, .fg select:focus, .fg textarea:focus {
  border-color:var(--green-30);
}
.fg textarea { min-height:130px; resize:vertical; }
.fg select {
  -webkit-appearance:none; appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%23666' d='M5 7L1 3h8z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
}
.fg select option { background:var(--bg-card); }

.btn-send {
  width:100%; padding:15px;
  background:var(--green); color:var(--bg-void);
  border:1px solid var(--green);
  font-size:11px; font-weight:700;
  letter-spacing:2px; text-transform:uppercase;
  cursor:pointer; transition:all .3s;
  display:flex; align-items:center; justify-content:center; gap:8px;
}
.btn-send:hover {
  background:transparent; color:var(--green);
  box-shadow:0 0 22px var(--green-30);
}

/* Contact info items */
.ci-item {
  display:flex; align-items:center; gap:15px;
  background:var(--bg-card);
  border:1px solid var(--border);
  padding:18px; transition:all .3s;
  margin-bottom:10px;
}
.ci-item:hover { border-color:var(--border-hover); }
.ci-ico {
  background:var(--bg-card-alt);
  width:42px; height:42px;
  display:flex; align-items:center; justify-content:center;
  font-size:17px; flex-shrink:0;
  transition:background .3s;
}
.ci-item:hover .ci-ico { background:var(--green-10); }
.ci-lbl {
  font-size:8.5px; font-weight:700;
  letter-spacing:2px; color:var(--txt-lo);
  text-transform:uppercase; margin-bottom:2px;
}
.ci-val { font-size:14px; font-weight:700; transition:color .3s; }
.ci-item:hover .ci-val { color:var(--green); }

/* Status panel */
.status-panel {
  background:rgba(8,8,13,.7);
  border:1px solid var(--border);
  padding:26px; margin-top:28px;
}
.status-panel h3 {
  font-size:13px; font-weight:700;
  color:var(--green); letter-spacing:1px;
  text-transform:uppercase; margin-bottom:18px;
}
.st-row {
  display:flex; justify-content:space-between;
  align-items:center; padding:9px 0;
  border-bottom:1px solid rgba(28,28,38,.6);
  font-size:10.5px;
}
.st-row:last-of-type { border-bottom:none; }
.st-lbl { color:var(--txt-mid); letter-spacing:1px; }
.st-val { font-weight:600; display:flex; align-items:center; gap:7px; }
.st-val.on { color:var(--green); }

.fp-box { margin-top:18px; padding-top:14px; }
.fp-lbl {
  font-size:8.5px; font-weight:700;
  letter-spacing:2px; color:var(--txt-lo);
  text-transform:uppercase; margin-bottom:7px;
}
.fp-val {
  font-size:9.5px; color:rgba(0,255,65,.45);
  background:var(--bg-void);
  border:1px solid var(--border);
  padding:7px 11px; letter-spacing:1px;
  word-break:break-all;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top:1px solid var(--border);
  background:var(--bg-card);
  padding:36px clamp(20px,5vw,48px);
  margin-top:auto; position:relative; z-index:1;
}
.footer-in {
  max-width:var(--max-w); margin:0 auto;
  display:flex; justify-content:space-between;
  align-items:center; gap:20px; flex-wrap:wrap;
}
.footer-copy { font-size:10.5px; color:var(--txt-mid); }
.footer-status { font-size:8.5px; color:var(--txt-lo); letter-spacing:1px; margin-top:3px; }
.footer-nav { display:flex; gap:22px; flex-wrap:wrap; }
.footer-nav a {
  font-size:8.5px; font-weight:600;
  letter-spacing:1.5px; color:var(--txt-lo);
  text-transform:uppercase; transition:color .3s;
}
.footer-nav a:hover { color:var(--green); }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity:0; transform:translateY(24px);
  transition:opacity .65s cubic-bezier(.25,.46,.45,.94),
             transform .65s cubic-bezier(.25,.46,.45,.94);
}
.reveal.visible { opacity:1; transform:translateY(0); }
.reveal-d1 { transition-delay:.1s }
.reveal-d2 { transition-delay:.2s }
.reveal-d3 { transition-delay:.3s }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1024px){
  .hero-inner { grid-template-columns:1fr; }
  .stats-panel { display:none; }
  .cards-grid { grid-template-columns:1fr 1fr; }
  .about-grid { grid-template-columns:1fr; gap:40px; }
  .detail-wrap { grid-template-columns:1fr; }
  .contact-grid { grid-template-columns:1fr; gap:40px; }
}
@media(max-width:768px){
  nav {
    display:none; position:fixed;
    top:var(--nav-h); left:0; width:100%;
    background:rgba(4,4,6,.97);
    flex-direction:column; align-items:flex-start;
    padding:24px; gap:18px;
    border-bottom:1px solid var(--border);
  }
  nav.open { display:flex; }
  .menu-btn { display:flex; }
  .hdr-socials { display:none; }
  .cards-grid { grid-template-columns:1fr; }
  .feat-grid { grid-template-columns:1fr; }
  .specs-grid { grid-template-columns:1fr 1fr; }
  .tech-grid { grid-template-columns:repeat(2,1fr); }
  .hero-watermark { display:none; }
}