/* ===== RBN Media — marketing site. Same design language as portal.rbn-media.com ===== */
:root {
  --bg: #f5f5f7;
  --panel: #ffffff;
  --ink: #1d1d1f;
  --ink-2: #424245;
  --muted: #6e6e73;
  --accent: #007aff;
  --accent-press: #0066d6;
  --accent-soft: rgba(0, 122, 255, 0.10);
  --brand-deep: #13509f;
  --brand-light: #4499d6;
  --line: #d2d2d7;
  --hairline: rgba(0, 0, 0, 0.08);
  --ok: #1a8f43; --ok-soft: #e3f7ea;
  --err: #d70015; --err-soft: #ffe5e3;
  --warn: #9a6400; --warn-soft: #fff2d6;
  --dark: #0b1220;
  --r-sm: 9px; --r: 14px; --r-lg: 22px; --r-pill: 980px;
  --shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
  --shadow-pop: 0 24px 60px rgba(16, 40, 90, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--panel);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { letter-spacing: -0.025em; line-height: 1.12; margin: 0; }
p { margin: 0; }
.muted { color: var(--muted); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 780px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #fff; font-weight: 600; font-size: 15px;
  padding: 11px 20px; border-radius: var(--r-pill); border: 1px solid transparent;
  transition: background .15s, transform .15s, box-shadow .15s; white-space: nowrap;
}
.btn:hover { background: var(--accent-press); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0, 122, 255, .25); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { background: rgba(0,0,0,.04); box-shadow: none; }
.btn.sm { padding: 7px 15px; font-size: 14px; }
.btn.xs { padding: 4px 11px; font-size: 12px; }
.btn.lg { padding: 14px 26px; font-size: 16px; }
.btn.white { background: #fff; color: var(--brand-deep); }
.btn.white:hover { background: #f0f6ff; }
.btn.outline-white { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn.outline-white:hover { background: rgba(255,255,255,.1); box-shadow: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--hairline);
}
.nav-row { display: flex; align-items: center; gap: 28px; height: 66px; }
.brand img { width: 132px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a { color: var(--ink-2); font-size: 14.5px; font-weight: 500; padding: 7px 13px; border-radius: var(--r-pill); }
.nav-links a:hover { background: rgba(0,0,0,.05); }
.nav-cta { display: flex; gap: 8px; margin-left: auto; }
.burger { display: none; margin-left: auto; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; padding: 10px; }
.burger span { display: block; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: transform .2s; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 84px 0 70px;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(68,153,214,.20), transparent 70%),
    radial-gradient(700px 400px at 0% 0%, rgba(0,122,255,.08), transparent 70%),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: .02em; margin-bottom: 14px; }
.eyebrow.light { color: #7cc0ff; }
.hero h1 { font-size: clamp(38px, 5.4vw, 62px); font-weight: 800; }
.grad { background: linear-gradient(90deg, var(--brand-deep), var(--brand-light)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18.5px; color: var(--ink-2); margin-top: 22px; max-width: 560px; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero-actions.center { justify-content: center; }
.fine { font-size: 13.5px; color: var(--muted); margin-top: 16px; }

.hero-visual { position: relative; }
.window {
  background: var(--panel); border-radius: var(--r-lg); box-shadow: var(--shadow-pop);
  border: 1px solid var(--hairline); overflow: hidden;
  transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
  transition: transform .6s ease;
}
.hero-visual:hover .window { transform: none; }
.win-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; background: #f6f6f8; border-bottom: 1px solid var(--hairline); }
.win-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.win-bar i:nth-child(2) { background: #febc2e; }
.win-bar i:nth-child(3) { background: #28c840; }
.win-bar span { margin-left: 12px; font-size: 12px; color: var(--muted); background: #fff; padding: 3px 12px; border-radius: 6px; border: 1px solid var(--hairline); }
.win-body { padding: 16px; }
.filters-mock { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.chip { font-size: 12px; font-weight: 500; padding: 4px 11px; border-radius: var(--r-pill); border: 1px solid var(--line); color: var(--ink-2); }
.chip.on { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
table.mini { width: 100%; border-collapse: collapse; font-size: 13px; }
table.mini th { text-align: left; font-weight: 600; color: var(--muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; padding: 6px 8px; border-bottom: 1px solid var(--hairline); }
table.mini td { padding: 9px 8px; border-bottom: 1px solid var(--hairline); }
table.mini td:last-child, table.mini th:last-child { text-align: right; font-weight: 600; }
.pill { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: var(--r-pill); background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.err { background: var(--err-soft); color: var(--err); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.win-foot { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; font-size: 12.5px; color: var(--muted); }
.float-card {
  position: absolute; left: -28px; bottom: -26px; display: flex; gap: 11px; align-items: center;
  background: #fff; padding: 12px 16px; border-radius: var(--r); box-shadow: var(--shadow-pop);
  border: 1px solid var(--hairline); animation: bob 5s ease-in-out infinite;
}
.float-card strong { display: block; font-size: 14px; }
.float-card span { font-size: 12.5px; color: var(--muted); }
@keyframes bob { 50% { transform: translateY(-8px); } }

/* ---------- Stats ---------- */
.stats { background: var(--bg); padding: 10px 0 70px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stats-grid > div { background: #fff; border-radius: var(--r); padding: 22px 22px; box-shadow: var(--shadow); border: 1px solid var(--hairline); }
.stats-grid strong { display: block; font-size: 32px; font-weight: 800; letter-spacing: -.03em; color: var(--brand-deep); }
.stats-grid span { color: var(--muted); font-size: 14px; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section.tint { background: var(--bg); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.section h2 { font-size: clamp(30px, 3.8vw, 44px); font-weight: 750; }
.sub { font-size: 17.5px; color: var(--ink-2); margin-top: 16px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { background: #fff; border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.feature:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,.08); }
.feature h3 { font-size: 19px; margin: 18px 0 8px; }
.feature p { color: var(--ink-2); font-size: 15px; }
.ico { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: linear-gradient(135deg, var(--brand-deep), var(--brand-light)); }
.ico svg { width: 23px; height: 23px; fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }

/* ---------- AI (dark) ---------- */
.section.dark {
  background: radial-gradient(800px 500px at 100% 0%, rgba(68,153,214,.28), transparent 65%), var(--dark);
  color: #e9eef7;
}
.section.dark h2 { color: #fff; }
.section.dark .sub { color: #b6c2d6; }
.checks { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 11px; }
.checks li { padding-left: 30px; position: relative; color: #dbe3f0; }
.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 19px; height: 19px; border-radius: 50%; background: rgba(0,122,255,.25) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237cc0ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12l4 4 8-8'/%3E%3C/svg%3E") center/12px no-repeat; }
.ai-marks { display: flex; gap: 10px; margin-top: 28px; }
.mark { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; padding: 7px 14px 7px 8px; border-radius: var(--r-pill); background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); }
.mark.gpt { --c: #0f0f0f; } .mark.claude { --c: #d97757; }
.mark::before { content: ""; width: 20px; height: 20px; border-radius: 50%; background: var(--c); border: 1px solid rgba(255,255,255,.3); }

.chat { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 14px; box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.msg { border-radius: 18px; padding: 14px 16px; font-size: 15px; }
.msg.user { background: var(--accent); color: #fff; justify-self: end; max-width: 88%; border-bottom-right-radius: 6px; }
.msg.bot { background: #fff; color: var(--ink); border-bottom-left-radius: 6px; }
.ranked { margin: 12px 0; padding: 0; list-style: none; counter-reset: r; }
.ranked li { counter-increment: r; display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--hairline); font-size: 14px; opacity: 0; transform: translateY(6px); transition: opacity .4s, transform .4s; }
.ranked li.show { opacity: 1; transform: none; }
.ranked li::before { content: counter(r); width: 22px; height: 22px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; display: grid; place-items: center; flex: none; }
.ranked li b { margin-left: auto; }
.tiny { font-size: 12.5px; color: var(--muted); }

/* ---------- Matcher ---------- */
.m-label { font-size: 11.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin: 0 0 10px; }
.window.mx { transform: none; max-width: 1060px; margin: 0 auto; }
.mx-body { display: grid; grid-template-columns: 300px 1fr; }
.mx-input { padding: 20px; background: #fafafc; border-right: 1px solid var(--hairline); }
.mx-input pre { margin: 0 0 14px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--r-sm); font: 12.5px/1.85 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--ink-2); white-space: pre-wrap; word-break: break-all; }
.mx-hint { font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.mx-out { padding: 20px; min-width: 0; }
.mx-summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.mx-summary span { font-size: 12.5px; padding: 5px 11px; border-radius: var(--r-pill); background: var(--bg); color: var(--ink-2); }
.mx-summary .ok { background: var(--ok-soft); color: var(--ok); }
.mx-summary .info { background: var(--accent-soft); color: var(--accent); }
.mx-table { border: 1px solid var(--hairline); border-radius: var(--r-sm); margin-bottom: 12px; overflow: hidden; }
.mx-row { display: grid; grid-template-columns: 18px minmax(0, 1.6fr) .8fr .8fr 1fr 100px; gap: 10px; align-items: center; padding: 9px 12px; font-size: 13px; border-top: 1px solid var(--hairline); }
.mx-row:first-child { border-top: 0; }
.mx-row.head { background: #fafafc; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.mx-row > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mx-row .r { text-align: right; font-weight: 600; }
.mx-row .span3 { grid-column: span 3; color: var(--muted); }
.mx-row.miss > span:nth-child(2) { color: var(--muted); }
.mx-row i { width: 15px; height: 15px; border-radius: 4px; border: 1.5px solid var(--line); }
.mx-row i.on { background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12l4 4 8-8'/%3E%3C/svg%3E") center/11px no-repeat; border-color: var(--accent); }
.mx-row.head i { border: 0; }
.blur { filter: blur(4px); user-select: none; }
.mx-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 20px; }
.mx-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px 40px; max-width: 1060px; margin: 56px auto 0; }
.mx-points h3 { font-size: 17px; margin-bottom: 6px; }
.mx-points p { color: var(--ink-2); font-size: 15px; }
.mx-points > div { padding-top: 16px; border-top: 2px solid var(--accent); }

/* ---------- API ---------- */
#ai + .section .btn.ghost { margin-top: 26px; }
.code { margin: 0; background: var(--dark); color: #dbe3f0; border-radius: var(--r-lg); padding: 26px; font: 13.5px/1.75 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-x: auto; box-shadow: var(--shadow-pop); }
.code .c { color: #6b7a92; } .code .k { color: #7cc0ff; font-weight: 700; } .code .s { color: #9be2b5; } .code .n { color: #ffcf7a; }

/* ---------- Steps ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.steps li { position: relative; padding: 26px; border-radius: var(--r-lg); background: #fff; border: 1px solid var(--hairline); box-shadow: var(--shadow); }
.steps b { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 16px; margin-bottom: 16px; }
.steps h3 { font-size: 18px; margin-bottom: 8px; }
.steps p { color: var(--ink-2); font-size: 15px; }

/* ---------- Trust ---------- */
.trust-sec { padding: 70px 0; }
.trust { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.trust h3 { font-size: 18px; margin-bottom: 6px; }
.trust p { color: var(--ink-2); font-size: 15px; }
.trust-item { padding-left: 18px; border-left: 3px solid var(--accent); }

/* ---------- FAQ ---------- */
details { border-bottom: 1px solid var(--line); padding: 4px 0; }
summary { list-style: none; cursor: pointer; padding: 18px 40px 18px 0; font-weight: 600; font-size: 17.5px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; top: 12px; font-size: 26px; font-weight: 300; color: var(--accent); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { padding: 0 0 20px; color: var(--ink-2); }

/* ---------- CTA ---------- */
.cta { padding: 0 0 100px; }
.cta-box { text-align: center; padding: 70px 24px; border-radius: 28px; color: #fff; background: linear-gradient(120deg, var(--brand-deep), #2273b9 55%, var(--brand-light)); max-width: 1132px; }
.cta-box h2 { font-size: clamp(28px, 3.6vw, 42px); }
.cta-box p { margin-top: 12px; color: rgba(255,255,255,.85); font-size: 17.5px; }

/* ---------- Footer ---------- */
.footer { background: var(--bg); border-top: 1px solid var(--hairline); padding: 54px 0 28px; font-size: 14.5px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.foot-grid img { width: 120px; margin-bottom: 12px; }
.foot-grid h4 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.foot-grid a { display: block; color: var(--ink-2); padding: 3px 0; }
.foot-grid a:hover { color: var(--accent); }
.foot-base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--hairline); color: var(--ink-2); font-size: 13px; }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal, .ranked li { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 48px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .window { transform: none; }
  .float-card { left: 12px; }
  .mx-body { grid-template-columns: 1fr; }
  .mx-input { border-right: 0; border-bottom: 1px solid var(--hairline); }
  .mx-points { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .burger { display: block; }
  .nav-cta { display: none; }
  .nav-links {
    position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: rgba(255,255,255,.97); border-bottom: 1px solid var(--hairline); padding: 8px 16px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 8px; border-radius: 0; border-bottom: 1px solid var(--hairline); font-size: 16px; }
  .nav-links::after { content: ""; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 52px 0 60px; }
  .section { padding: 70px 0; }
  .features, .steps, .trust, .foot-grid { grid-template-columns: 1fr; }
  .stats-grid strong { font-size: 26px; }
  .mx-points { grid-template-columns: 1fr; gap: 26px; }
  .mx-row { grid-template-columns: 16px minmax(0, 1fr) auto 48px; }
  .mx-row > :nth-child(3), .mx-row:not(.miss) > :nth-child(4) { display: none; }
  .mx-row.miss { grid-template-columns: 16px minmax(0, 1fr) auto; }
  .mx-row .span3 { display: none; }
  .mx-out, .mx-input { padding: 14px; }
  .lead { font-size: 17px; }
  .cta-box { border-radius: 20px; padding: 52px 20px; }
  .float-card { display: none; }
}
.mobile-only { display: none; }
@media (max-width: 820px) {
  .nav-links .mobile-only { display: block; }
  .nav-links .strong { color: var(--accent); font-weight: 600; border-bottom: 0; }
}

/* ---------- 404 ---------- */
.notfound { min-height: 100vh; display: grid; place-items: center; text-align: center; }
.notfound img { margin: 0 auto 32px; }
.notfound .lead { margin-left: auto; margin-right: auto; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 24px; max-width: 1060px; margin: 0 auto; align-items: start; }
.card-form, .side-card { background: #fff; border: 1px solid var(--hairline); border-radius: var(--r-lg); box-shadow: var(--shadow); padding: 28px; }
.card-form h3, .side-card h3 { font-size: 20px; margin-bottom: 18px; }
.card-form label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 14px; }
.card-form .opt { font-weight: 400; color: var(--muted); }
.card-form input, .card-form select, .card-form textarea {
  display: block; width: 100%; margin-top: 6px; padding: 11px 13px; font-size: 15px; line-height: 1.4; font-family: inherit; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-sm); transition: border-color .15s, box-shadow .15s;
}
.card-form textarea { resize: vertical; min-height: 120px; }
.card-form input:focus, .card-form select:focus, .card-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(0, 122, 255, .15); }
.card-form .invalid { border-color: var(--err); }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.f-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 6px; }
.f-foot .btn[disabled] { opacity: .6; cursor: progress; transform: none; box-shadow: none; }
.f-status { font-size: 14px; color: var(--muted); }
.f-status.ok { color: var(--ok); font-weight: 600; }
.f-status.err { color: var(--err); }
.side-cards { display: grid; gap: 24px; }
.side-card p { color: var(--ink-2); font-size: 15px; margin-bottom: 18px; }
.side-card .ico { margin-bottom: 16px; }
.side-card.call { border-color: rgba(0, 122, 255, .25); background: linear-gradient(180deg, #f3f8ff, #fff 60%); }
.side-card .fine { margin: 12px 0 0; font-size: 13px; }
.link-arrow { font-weight: 600; }
@media (max-width: 1000px) { .contact-grid { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .f-row { grid-template-columns: 1fr; gap: 0; } .card-form, .side-card { padding: 22px; } }