/* ============================================================
   Dentou Mind — Corporate Website Stylesheet
   Design language: clinical minimalism (white / ink / coral)
   ============================================================ */

:root {
  --ink: #1c1c1a;
  --ink-soft: #3a3a37;
  --accent: #e85a35;
  --accent-dark: #cf4826;
  --accent-soft: #fdeee6;
  --bg: #ffffff;
  --alt: #fafaf8;
  --line: #e8e7e2;
  --line-soft: #f0efe9;
  --text: #2b2b29;
  --muted: #6d6d67;
  --muted-light: #a3a39b;
  --max: 1140px;
  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --serif: "Newsreader", Georgia, "Times New Roman", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent-dark); }

::selection { background: rgba(232, 90, 53, 0.16); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.narrow { max-width: 860px; }

/* ---------- Typography ---------- */
h1, h2, h3 { font-family: var(--serif); color: var(--ink); font-weight: 500; letter-spacing: 0; }
h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); line-height: 1.12; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); line-height: 1.18; }
h3 { font-size: 1.25rem; line-height: 1.35; }
h4 { color: var(--ink); line-height: 1.3; font-weight: 650; }
p.lead, .lead { font-size: 1.13rem; color: var(--muted); font-weight: 400; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.76rem; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 24px; height: 1.5px; background: var(--accent); }

.section { padding: 92px 0; }
.section.tight { padding: 64px 0; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { color: var(--muted); font-size: 1.06rem; }
.section-alt { background: var(--alt); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow 0.3s var(--ease);
}
.site-header.scrolled { box-shadow: 0 1px 10px rgba(0, 0, 0, 0.05); }

.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand svg { width: 34px; height: 34px; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name .b1 { font-family: var(--serif); font-weight: 600; font-size: 1.28rem; color: var(--ink); letter-spacing: 0; }
.brand-name .b2 { font-size: 0.62rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted-light); }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a.nav-link {
  position: relative; padding: 9px 13px; font-size: 0.92rem; font-weight: 500;
  color: var(--ink-soft); border-radius: 8px; transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.main-nav a.nav-link:hover { color: var(--ink); background: rgba(0, 0, 0, 0.04); }
.main-nav a.nav-link.active { color: var(--ink); font-weight: 600; }
.main-nav a.nav-link.active::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 3px; height: 2px;
  background: var(--accent); border-radius: 2px;
}
.nav-cta { margin-left: 12px; }

.lang-switch { margin-left: 10px; padding-left: 14px; border-left: 1px solid var(--line); display: inline-flex; align-items: center; }
.lang-switch a {
  font-size: 0.84rem; font-weight: 600; color: var(--muted);
  padding: 6px 4px; letter-spacing: 0.02em; transition: color 0.2s var(--ease);
}
.lang-switch a:hover { color: var(--accent-dark); }
.lang-switch a[aria-current="true"] { color: var(--ink); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: transform 0.25s var(--ease), opacity 0.2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 12px 24px; border-radius: 9px;
  font-size: 0.94rem; font-weight: 600; letter-spacing: 0.01em;
  border: 1px solid transparent; cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.15s var(--ease);
}
.btn svg { width: 15px; height: 15px; transition: transform 0.22s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: rgba(0, 0, 0, 0.22); }
.btn-ghost:hover { border-color: var(--ink); background: rgba(0, 0, 0, 0.03); color: var(--ink); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: #f2f1ec; color: var(--ink); }
.btn-outline-light { border-color: rgba(255, 255, 255, 0.4); color: #fff; }
.btn-outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); color: #fff; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--bg); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.35; pointer-events: none; }
.hero-inner { position: relative; text-align: center; padding: 96px 0 40px; }
.hero .eyebrow { justify-content: center; }
.hero h1 { margin: 0 auto 22px; max-width: 900px; }
.hero h1 .accent { color: var(--accent); }
.hero .lead { max-width: 640px; margin: 0 auto 34px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.hero-visual { position: relative; max-width: 880px; margin: 56px auto 0; padding-bottom: 72px; }
.hero-visual svg { width: 100%; height: auto; }

.trust-strip { position: relative; border-top: 1px solid var(--line); background: var(--alt); }
.trust-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 26px 22px; border-left: 1px solid var(--line); }
.trust-item:first-child { border-left: 0; padding-left: 0; }
.trust-item .t-num { font-size: 0.76rem; font-weight: 700; letter-spacing: 0.14em; color: var(--accent); text-transform: uppercase; margin-bottom: 6px; }
.trust-item .t-txt { font-size: 0.94rem; font-weight: 550; color: var(--ink); line-height: 1.45; }

/* ---------- Cards & Grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  display: flex; flex-direction: column;
}
.card:hover { border-color: #d4d3cb; box-shadow: var(--shadow-md); }
.card .icon-wrap {
  width: 46px; height: 46px; border-radius: 10px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent-dark);
}
.card .icon-wrap svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.96rem; flex: 1; }
.card .card-link { margin-top: 18px; font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 7px; color: var(--accent-dark); }
.card .card-link svg { width: 14px; height: 14px; transition: transform 0.2s var(--ease); }
.card .card-link:hover { color: var(--accent); }
.card .card-link:hover svg { transform: translateX(4px); }

/* ---------- Split / feature rows ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split.rev > .split-media { order: 2; }
.split-media { border-radius: var(--radius); overflow: hidden; }
.split-media svg, .split-media img { width: 100%; height: auto; }
.split-body h2 { margin-bottom: 18px; }
.split-body p { color: var(--muted); margin-bottom: 14px; }

.check-list { list-style: none; margin-top: 8px; }
.check-list li { position: relative; padding-left: 29px; margin-bottom: 11px; color: var(--text); font-size: 0.97rem; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 17px; height: 17px;
  border-radius: 50%; background: var(--accent-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.2l2.6 2.6L12 5.4' fill='none' stroke='%23e85a35' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center; background-size: 11px;
}

/* ---------- Page hero (sub pages) ---------- */
.page-hero { background: var(--alt); border-bottom: 1px solid var(--line-soft); padding: 68px 0 60px; }
.page-hero h1 { margin-bottom: 16px; }
.page-hero .lead { max-width: 740px; }
.breadcrumb { font-size: 0.82rem; color: var(--muted-light); margin-bottom: 20px; letter-spacing: 0.02em; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 8px; }

/* ---------- Pillar detail blocks ---------- */
.pillar-block { padding: 68px 0; border-bottom: 1px solid var(--line-soft); }
.pillar-block:last-of-type { border-bottom: 0; }
.pillar-tag {
  display: inline-block; font-size: 0.73rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent-dark); background: var(--accent-soft);
  border-radius: 999px; padding: 5px 13px; margin-bottom: 16px;
}

/* ---------- Diagram (CSS architecture blocks) ---------- */
.diagram { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.diagram-title { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-light); margin-bottom: 20px; }
.dg-row { display: flex; gap: 12px; align-items: stretch; }
.dg-box { flex: 1; border: 1px solid var(--line); border-radius: 9px; padding: 13px 12px; text-align: center; background: var(--alt); }
.dg-box .dg-t { font-size: 0.88rem; font-weight: 650; color: var(--ink); line-height: 1.35; }
.dg-box .dg-s { font-size: 0.73rem; color: var(--muted); margin-top: 4px; line-height: 1.4; }
.dg-box.primary { background: rgba(0, 0, 0, 0.025); border-color: rgba(0, 0, 0, 0.22); }
.dg-box.accent { background: var(--accent-soft); border-color: rgba(232, 90, 53, 0.35); }
.dg-connector { display: flex; justify-content: center; padding: 5px 0; color: var(--muted-light); }
.dg-connector svg { width: 17px; height: 17px; }

/* ---------- Stats band ---------- */
.stats-band { background: var(--ink); color: #fff; border-radius: 16px; padding: 50px 46px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat .s-val { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 500; color: #fff; line-height: 1.15; }
.stat .s-val span { color: var(--accent); }
.stat .s-lab { margin-top: 8px; font-size: 0.84rem; color: rgba(255, 255, 255, 0.6); line-height: 1.55; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--ink); border-radius: 16px; padding: 62px 56px; color: #fff; }
.cta-band::after {
  content: ""; position: absolute; right: -110px; top: -110px; width: 360px; height: 360px;
  border-radius: 50%; border: 46px solid rgba(255, 255, 255, 0.05);
}
.cta-band::before {
  content: ""; position: absolute; right: 70px; bottom: -90px; width: 200px; height: 200px;
  border-radius: 50%; border: 26px solid rgba(232, 90, 53, 0.2);
}
.cta-band .eyebrow { color: #f2a488; }
.cta-band .eyebrow::before { background: #f2a488; }
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, 0.68); max-width: 600px; margin-bottom: 28px; }
.cta-band .hero-actions { position: relative; z-index: 1; justify-content: flex-start; }

/* ---------- Case study cards ---------- */
.case-card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 32px; }
.case-card + .case-card { margin-top: 24px; }
.case-meta { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 16px; }
.tag { font-size: 0.72rem; font-weight: 650; letter-spacing: 0.06em; padding: 4px 11px; border-radius: 999px; background: rgba(0, 0, 0, 0.05); color: var(--ink-soft); text-transform: uppercase; }
.tag.red { background: var(--accent-soft); color: var(--accent-dark); }
.case-card h3 { font-size: 1.4rem; margin-bottom: 6px; }
.case-anon { font-size: 0.86rem; color: var(--muted-light); margin-bottom: 18px; font-style: italic; }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.case-col h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted-light); margin-bottom: 10px; }
.case-col p, .case-col li { font-size: 0.95rem; color: var(--muted); }
.case-col ul { padding-left: 18px; }
.case-col li { margin-bottom: 7px; }
.case-outcome { margin-top: 24px; padding: 17px 22px; border-left: 3px solid var(--accent); background: var(--alt); border-radius: 0 9px 9px 0; }
.case-outcome strong { color: var(--ink); }
.case-outcome p { font-size: 0.95rem; color: var(--text); }
.anon-note { font-size: 0.84rem; color: var(--muted-light); font-style: italic; margin-top: 28px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
table.spec { width: 100%; border-collapse: collapse; min-width: 560px; }
table.spec th, table.spec td { text-align: left; padding: 15px 22px; border-bottom: 1px solid var(--line-soft); font-size: 0.94rem; vertical-align: top; }
table.spec tr:last-child th, table.spec tr:last-child td { border-bottom: 0; }
table.spec th { width: 230px; color: var(--ink); font-weight: 650; background: var(--alt); }
table.spec td { color: var(--muted); }

/* ---------- Timeline ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 1.5px; background: var(--line); }
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ""; position: absolute; left: -30px; top: 7px; width: 11px; height: 11px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); }
.timeline-item .tl-year { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; color: var(--accent-dark); text-transform: uppercase; margin-bottom: 5px; }
.timeline-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
.timeline-item p { font-size: 0.93rem; color: var(--muted); }

/* ---------- Quote ---------- */
.quote-block { border-left: 3px solid var(--accent); padding: 6px 0 6px 26px; margin: 28px 0; }
.quote-block p { font-family: var(--serif); font-size: 1.35rem; color: var(--ink); font-weight: 500; line-height: 1.5; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.contact-panel { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.contact-panel h3 { margin-bottom: 8px; }
.contact-row { display: flex; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.contact-row:last-child { border-bottom: 0; }
.contact-row .cr-icon { flex: 0 0 42px; width: 42px; height: 42px; border-radius: 9px; background: var(--accent-soft); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; }
.contact-row .cr-icon svg { width: 20px; height: 20px; }
.contact-row .cr-t { font-size: 0.76rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-light); margin-bottom: 3px; }
.contact-row .cr-v { font-size: 0.96rem; color: var(--text); font-weight: 550; line-height: 1.55; }
.contact-row .cr-v a { color: var(--accent-dark); }
.form-note { font-size: 0.87rem; color: var(--muted); background: var(--alt); border: 1px dashed var(--line); border-radius: 9px; padding: 15px 17px; margin-top: 20px; }
form.contact-form label { display: block; font-size: 0.84rem; font-weight: 600; color: var(--ink); margin: 16px 0 6px; }
form.contact-form input, form.contact-form select, form.contact-form textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--font); font-size: 0.94rem; color: var(--text); background: var(--alt);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}
form.contact-form input:focus, form.contact-form select:focus, form.contact-form textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232, 90, 53, 0.12); background: #fff;
}
form.contact-form textarea { min-height: 120px; resize: vertical; }
form.contact-form .btn { margin-top: 20px; }

/* ---------- 404 ---------- */
.nf-wrap { text-align: center; padding: 110px 0; }
.nf-code { font-family: var(--serif); font-size: 5rem; font-weight: 500; color: var(--ink); line-height: 1; }

/* ---------- Footer ---------- */
.site-footer { background: var(--alt); border-top: 1px solid var(--line); color: var(--muted); }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding: 64px 0 44px; }
.footer-brand p { font-size: 0.89rem; margin-top: 16px; max-width: 320px; color: var(--muted); line-height: 1.7; }
.footer-col h5 { font-size: 0.76rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-light); margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; font-size: 0.9rem; color: var(--muted); }
.footer-col a { color: var(--ink-soft); font-size: 0.9rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent-dark); }
.footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 0.82rem; color: var(--muted-light); }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.65s var(--ease), transform 0.65s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .trust-strip .container { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(3) { border-left: 0; padding-left: 0; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .section { padding: 64px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.rev > .split-media { order: 0; }
  .case-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 44px 28px; }
  .dg-row { flex-direction: column; }
  table.spec th { width: 160px; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; inset: 72px 0 auto 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 14px 22px 20px; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
  }
  .main-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .main-nav a.nav-link { padding: 12px 12px; font-size: 1rem; }
  .main-nav a.nav-link.active::after { display: none; }
  .nav-cta { margin: 10px 0 0; }
  .nav-cta .btn { width: 100%; justify-content: center; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .trust-strip .container { grid-template-columns: 1fr; }
  .trust-item { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
  .trust-item:first-child { border-top: 0; }
  .stats-band { grid-template-columns: 1fr; padding: 38px 28px; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; padding: 50px 0 34px; }
  .card { padding: 26px 22px; }
  .case-card { padding: 26px 22px; }
  .diagram { padding: 22px 16px; }
}