/* The Diet Science — Solution page */
.ds-solution-block {
  --bg: #F6F1EA;
  --bg-2: #EFE8DC;
  --paper: #FBF7F0;
  --ink: #1A1A18;
  --ink-2: #2C2A26;
  --muted: #5A554C;
  --rule: #1A1A18;
  --rule-soft: rgba(26, 26, 24, 0.18);
  --accent: #2F8F6E;        /* sage emerald */
  --accent-soft: #C9E2D4;
  --accent-ink: #1F6B52;
  --warning: #C58A2E;
  --serif: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --serif-body: 'EB Garamond', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}
.ds-solution-block *, .ds-solution-block *::before, .ds-solution-block *::after { box-sizing: border-box; }
.ds-solution-block {
  margin: 0;
  padding: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--serif-body);
  font-size: 20px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  isolation: isolate;
}
/* Full-bleed warm-cream gradient + masked dot-grid backdrop — matches the
   treatment used on the Pulse problem section and on the body. Two pseudo-
   elements: ::before paints the warm-cream base with mint top-right + amber
   bottom-left tints; ::after lays a faint dot grid radially masked to fade
   at the edges. Inner cards/frames remain opaque on top. */
.ds-solution-block::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background:
    radial-gradient(ellipse 80% 60% at 90% 0%, rgba(25,195,125,.10), transparent 60%),
    radial-gradient(ellipse 60% 50% at 0% 100%, rgba(245,181,71,.08), transparent 60%),
    linear-gradient(180deg, #FBF8F1 0%, #F4F0E6 100%);
  z-index: -2;
  pointer-events: none;
}
.ds-solution-block::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  background-image: radial-gradient(circle at 1px 1px, rgba(15,27,45,.07) 1px, transparent 0);
  background-size: 4px 4px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
          mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 75%);
  z-index: -1;
  pointer-events: none;
}
.ds-solution-block a { color: inherit; }
/* Subtle paper grain via SVG noise */
/* ---------- Top nav ---------- */
.ds-solution-block .nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px 56px;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .nav-left, .ds-solution-block .nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
}
.ds-solution-block .nav-right { justify-content: flex-end; }
.ds-solution-block .nav-brand {
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  text-align: center;
  letter-spacing: 0.01em;
}
.ds-solution-block .nav-brand .ds-mark {
  display: inline-block;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  margin-right: 10px;
  vertical-align: middle;
  transform: translateY(-2px);
}
.ds-solution-block .nav a { text-decoration: none; opacity: 0.9; color: var(--ink); }
.ds-solution-block .nav a:hover { opacity: 1; }
.ds-solution-block .nav .pill {
  background: var(--accent);
  color: #FBF7F0;
  padding: 9px 16px;
  border-radius: 999px;
  letter-spacing: 0.16em;
}
.ds-solution-block .nav .pill:hover { background: var(--accent-ink); opacity: 1; }
/* ---------- Section scaffold ---------- */
.ds-solution-block .section {
  position: relative;
  padding: 110px 56px;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .section.tight { padding: 72px 56px; }
.ds-solution-block .section.flush { padding-top: 80px; padding-bottom: 80px; }
.ds-solution-block .eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.ds-solution-block .eyebrow::before, .ds-solution-block .eyebrow.center::after {
  content: "";
  display: inline-block;
  width: 28px; height: 1px;
  background: var(--ink-2);
}
.ds-solution-block .eyebrow.center { display: flex; justify-content: center; }
.ds-solution-block .eyebrow.center::before { display: inline-block; }
.ds-solution-block .eyebrow-num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: 500;
}
.ds-solution-block .display {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(60px, 8vw, 116px);
  line-height: 0.98;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.ds-solution-block .display em {
  font-style: italic;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 8px;
}
.ds-solution-block .h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.005em;
  margin: 0;
  color: var(--ink);
}
.ds-solution-block .h2 em {
  font-style: italic;
  color: var(--accent);
}
.ds-solution-block .lede {
  font-family: var(--serif-body);
  font-size: 26px;
  line-height: 1.5;
  color: var(--ink);
  max-width: 62ch;
  margin: 26px 0 0;
}
.ds-solution-block .lede .quiet {
  font-style: italic;
  color: var(--muted);
  display: block;
  margin-top: 10px;
}
.ds-solution-block .kicker {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: var(--muted);
}
/* ---------- Hero / Intro ---------- */
.ds-solution-block .solution-intro {
  text-align: center;
  padding: 130px 56px 90px;
}
.ds-solution-block .solution-intro .badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.ds-solution-block .solution-intro .badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px rgba(47,143,110,0.18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(47,143,110,0.18); }
  50% { box-shadow: 0 0 0 8px rgba(47,143,110,0.05); }
}
.ds-solution-block .solution-intro h1 { margin-top: 26px; }
.ds-solution-block .solution-intro .lede { margin-left: auto; margin-right: auto; text-align: center; }
.ds-solution-block .intro-meta {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .intro-meta > div {
  padding: 22px 18px;
  border-right: 1px solid var(--rule-soft);
  text-align: center;
}
.ds-solution-block .intro-meta > div:last-child { border-right: none; }
.ds-solution-block .intro-meta .num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 32px;
  color: var(--accent);
}
.ds-solution-block .intro-meta .lbl {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-top: 6px;
  font-weight: 500;
}
/* ---------- Feature row (alternating split) ---------- */
.ds-solution-block .feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: center;
  max-width: 1320px;
  margin: 0 auto;
}
.ds-solution-block .feature.reverse .feat-copy { order: 2; }
.ds-solution-block .feature.reverse .feat-media { order: 1; }
.ds-solution-block .feat-copy .eyebrow { margin-bottom: 28px; }
.ds-solution-block .feat-copy h2 { margin-bottom: 22px; }
.ds-solution-block .feat-copy .body p {
  font-size: 22px;
  line-height: 1.55;
  color: var(--ink);
  margin: 0 0 16px;
  max-width: 52ch;
}
.ds-solution-block .feat-spec {
  margin-top: 32px;
  border-top: 1px solid var(--rule-soft);
}
.ds-solution-block .feat-spec dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  margin: 0;
  border-bottom: 1px solid var(--rule-soft);
  padding: 14px 0;
  align-items: baseline;
}
.ds-solution-block .feat-spec dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: 500;
}
.ds-solution-block .feat-spec dd {
  margin: 0;
  font-family: var(--serif-body);
  font-size: 19px;
  color: var(--ink);
}
.ds-solution-block .feat-spec dd em { color: var(--accent-ink); font-style: italic; }
/* ---------- Video placeholder ---------- */
.ds-solution-block .media-frame {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow:
    0 1px 0 rgba(0,0,0,0.02),
    0 30px 60px -30px rgba(26, 26, 24, 0.18);
}
.ds-solution-block .media-frame.wide { aspect-ratio: 5 / 4; }
.ds-solution-block .media-frame.square { aspect-ratio: 1 / 1; }
.ds-solution-block .media-frame .stripes {
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(26,26,24,0.04) 0px,
    rgba(26,26,24,0.04) 1px,
    transparent 1px,
    transparent 14px
  );
}
.ds-solution-block .media-frame .frame-bezel {
  position: absolute; inset: 14px;
  border: 1px dashed var(--rule-soft);
  border-radius: 8px;
}
.ds-solution-block .media-frame .frame-meta {
  position: absolute;
  top: 18px; left: 22px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.ds-solution-block .media-frame .frame-num {
  position: absolute;
  top: 18px; right: 22px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted);
}
.ds-solution-block .media-frame .frame-corner {
  position: absolute;
  bottom: 18px; left: 22px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.ds-solution-block .media-frame .frame-time {
  position: absolute;
  bottom: 18px; right: 22px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted);
}
.ds-solution-block .media-frame .center {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  text-align: center;
}
.ds-solution-block .media-frame .play-disc {
  width: 78px; height: 78px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: grid; place-items: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(.2,.8,.2,1), background 0.3s;
  box-shadow: 0 12px 24px -10px rgba(26, 26, 24, 0.35);
}
.ds-solution-block .media-frame .play-disc:hover {
  transform: scale(1.07);
  background: var(--accent-ink);
}
.ds-solution-block .media-frame .play-disc svg {
  width: 18px; height: 18px;
  fill: currentColor;
}
.ds-solution-block .media-frame .caption {
  margin-top: 22px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  color: var(--ink-2);
}
.ds-solution-block .media-frame .sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}
/* ---------- Bento grid for "the system" ---------- */
.ds-solution-block .system-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
  margin-top: 64px;
}
.ds-solution-block .system-grid .cell {
  background: var(--bg);
  padding: 36px 32px;
  min-height: 220px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.ds-solution-block .system-grid .cell.span-3 { grid-column: span 3; }
.ds-solution-block .system-grid .cell.span-2 { grid-column: span 2; }
.ds-solution-block .system-grid .cell.span-4 { grid-column: span 4; }
.ds-solution-block .system-grid .cell.span-6 { grid-column: span 6; }
.ds-solution-block .system-grid .cell .num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted);
}
.ds-solution-block .system-grid .cell h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 30px;
  line-height: 1.05;
  margin: 18px 0 10px;
}
.ds-solution-block .system-grid .cell h3 em { font-style: italic; color: var(--accent); }
.ds-solution-block .system-grid .cell p {
  font-size: 15px;
  color: var(--muted);
  margin: 0;
  max-width: 38ch;
}
/* ---------- Conversation thread mock ---------- */
.ds-solution-block .thread {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--serif-body);
  font-size: 16px;
}
.ds-solution-block .thread .row { display: flex; gap: 8px; }
.ds-solution-block .thread .row.you { justify-content: flex-end; }
.ds-solution-block .thread .bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 16px;
  line-height: 1.4;
}
.ds-solution-block .thread .you .bubble {
  background: var(--ink);
  color: var(--paper);
  border-bottom-right-radius: 6px;
}
.ds-solution-block .thread .ai .bubble {
  background: var(--bg-2);
  color: var(--ink);
  border-bottom-left-radius: 6px;
}
.ds-solution-block .thread .ai .bubble em { color: var(--accent-ink); font-style: italic; }
.ds-solution-block .thread .meta {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  padding: 6px 0 2px;
}
.ds-solution-block .macro-chip {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
/* ---------- Call card mock ---------- */
.ds-solution-block .call-card {
  background: var(--ink);
  color: var(--paper);
  border-radius: 18px;
  padding: 28px 26px;
  position: relative;
  overflow: hidden;
}
.ds-solution-block .call-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 0%, rgba(47,143,110,0.35), transparent 60%);
  pointer-events: none;
}
.ds-solution-block .call-card .top {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(251,247,240,0.7);
}
.ds-solution-block .call-card .live { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px rgba(47,143,110,0.3); }
.ds-solution-block .call-card .who {
  font-family: var(--serif);
  font-size: 30px;
  margin: 18px 0 4px;
}
.ds-solution-block .call-card .who em { font-style: italic; color: var(--accent-soft); }
.ds-solution-block .call-card .timer {
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(251,247,240,0.6);
  letter-spacing: 0.18em;
}
.ds-solution-block .call-card .wave {
  margin-top: 22px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 56px;
}
.ds-solution-block .call-card .wave span {
  flex: 1;
  background: var(--accent-soft);
  border-radius: 2px;
  animation: bar 1.2s ease-in-out infinite;
}
@keyframes bar {
  0%, 100% { height: 18%; }
  50% { height: 90%; }
}
.ds-solution-block .call-card .ctrls {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.ds-solution-block .call-card .ctrls button {
  background: rgba(251,247,240,0.08);
  color: var(--paper);
  border: 1px solid rgba(251,247,240,0.14);
  border-radius: 999px;
  padding: 10px 0;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
}
.ds-solution-block .call-card .ctrls button.end {
  background: #B14A4A;
  border-color: #B14A4A;
}
/* ---------- Calendar ---------- */
.ds-solution-block .cal {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 22px;
  font-family: var(--serif-body);
}
.ds-solution-block .cal-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.ds-solution-block .cal-head .month { font-family: var(--serif); font-style: italic; font-size: 22px; color: var(--ink); letter-spacing: 0; text-transform: none; }
.ds-solution-block .cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  font-family: var(--mono);
  font-size: 12px;
  text-align: center;
}
.ds-solution-block .cal-grid .dow {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--muted);
  padding-bottom: 6px;
}
.ds-solution-block .cal-grid .day {
  padding: 10px 0;
  border-radius: 6px;
  color: var(--ink-2);
  cursor: pointer;
}
.ds-solution-block .cal-grid .day.muted { color: var(--rule-soft); }
.ds-solution-block .cal-grid .day.selected { background: var(--ink); color: var(--paper); }
.ds-solution-block .cal-grid .day.dot { position: relative; }
.ds-solution-block .cal-grid .day.dot::after {
  content: ""; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}
.ds-solution-block .cal-slots { margin-top: 20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.ds-solution-block .cal-slots .slot {
  border: 1px solid var(--rule-soft);
  padding: 10px 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.ds-solution-block .cal-slots .slot:hover { border-color: var(--accent); color: var(--accent-ink); }
.ds-solution-block .cal-slots .slot.taken { color: var(--rule-soft); text-decoration: line-through; cursor: not-allowed; }
.ds-solution-block .cal-slots .slot.picked { background: var(--accent); color: var(--paper); border-color: var(--accent); }
.ds-solution-block .expert-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--rule-soft);
}
.ds-solution-block .expert-row:first-child { border-top: none; }
.ds-solution-block .expert-row .avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg-2);
  display: grid; place-items: center;
  font-family: var(--serif); font-style: italic; font-size: 18px;
  color: var(--accent-ink);
}
.ds-solution-block .expert-row .meta { flex: 1; }
.ds-solution-block .expert-row .nm { font-family: var(--serif); font-size: 19px; }
.ds-solution-block .expert-row .role { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }
.ds-solution-block .expert-row .book {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  border: 1px solid var(--ink); padding: 8px 12px; border-radius: 999px;
  cursor: pointer; background: transparent;
}
.ds-solution-block .expert-row .book:hover { background: var(--ink); color: var(--paper); }
/* ---------- Dashboard mock ---------- */
.ds-solution-block .dash {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 24px;
}
.ds-solution-block .dash-head {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 14px;
  margin-bottom: 18px;
}
.ds-solution-block .dash-head .day {
  font-family: var(--serif); font-style: italic; font-size: 24px;
}
.ds-solution-block .dash-head .date { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; color: var(--muted); }
.ds-solution-block .macro-bars { display: grid; gap: 14px; }
.ds-solution-block .macro-bars .row { display: grid; grid-template-columns: 90px 1fr 90px; gap: 12px; align-items: center; }
.ds-solution-block .macro-bars .lbl {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted);
}
.ds-solution-block .macro-bars .bar {
  height: 6px; background: var(--bg-2); border-radius: 3px; overflow: hidden;
}
.ds-solution-block .macro-bars .bar > span { display: block; height: 100%; background: var(--accent); border-radius: 3px; }
.ds-solution-block .macro-bars .val { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-align: right; color: var(--ink-2); }
.ds-solution-block .macro-bars .row.over .bar > span { background: var(--warning); }
.ds-solution-block .dash-foot {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.ds-solution-block .dash-foot .stat .v { font-family: var(--serif); font-style: italic; font-size: 26px; color: var(--accent-ink); }
.ds-solution-block .dash-foot .stat .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }
/* ---------- Closing CTA ---------- */
.ds-solution-block .closing {
  text-align: center;
  padding: 140px 56px 110px;
  background: var(--bg);
  border-bottom: none;
}
.ds-solution-block .closing .h2 { max-width: 18ch; margin: 22px auto 0; color: var(--ink); }
.ds-solution-block .closing .cta {
  margin-top: 44px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--ink);
  color: var(--paper);
  padding: 22px 32px 22px 38px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: transform 0.3s cubic-bezier(.2,.8,.2,1), background 0.3s;
}
.ds-solution-block .closing .cta:hover { background: var(--accent-ink); transform: translateY(-2px); }
.ds-solution-block .closing .cta .arrow {
  width: 28px; height: 28px; border-radius: 50%; background: var(--accent);
  display: grid; place-items: center;
}
.ds-solution-block .closing .scroll-hint {
  margin-top: 64px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--muted);
}
.ds-solution-block .closing .scroll-hint span { display: block; margin-top: 6px; font-size: 14px; }
.ds-solution-block .footer-rule {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 56px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--rule-soft);
}
/* ---------- Memory card ---------- */
.ds-solution-block .memory-card {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 24px 26px;
}
.ds-solution-block .memory-head {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 12px;
  margin-bottom: 8px;
}
.ds-solution-block .memory-list { list-style: none; margin: 0; padding: 0; }
.ds-solution-block .memory-list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--serif-body);
}
.ds-solution-block .memory-list li:last-child { border-bottom: none; }
.ds-solution-block .memory-list li span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.ds-solution-block .memory-list li b {
  font-weight: 500;
  font-size: 17px;
  color: var(--ink);
}
.ds-solution-block .memory-list li b em { font-style: italic; color: var(--accent-ink); font-weight: 500; }
.ds-solution-block .memory-foot {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule-soft);
  display: flex; gap: 10px; align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
/* ---------- Science card ---------- */
.ds-solution-block .science-card {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 24px 26px;
}
.ds-solution-block .science-head {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 12px;
  margin-bottom: 18px;
}
.ds-solution-block .science-quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.35;
  color: var(--ink);
  position: relative;
  padding: 0 0 18px 0;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .science-quote .qmark {
  font-size: 48px;
  line-height: 0;
  vertical-align: -10px;
  color: var(--accent);
  margin-right: 4px;
}
.ds-solution-block .science-quote em { color: var(--accent-ink); }
.ds-solution-block .science-list { list-style: none; padding: 0; margin: 0; }
.ds-solution-block .science-list li {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .science-list li:last-child { border-bottom: none; }
.ds-solution-block .science-list .tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent-soft);
  padding: 4px 8px;
  border-radius: 4px;
  text-align: center;
}
.ds-solution-block .science-list .title { font-family: var(--serif-body); font-size: 16px; color: var(--ink-2); }
.ds-solution-block .science-list .src { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; color: var(--muted); }
/* ---------- Progress card ---------- */
.ds-solution-block .progress-card {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 24px 26px;
}
.ds-solution-block .progress-head {
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.ds-solution-block .progress-headline {
  font-family: var(--serif);
  font-size: 38px;
  line-height: 1.05;
  font-weight: 500;
}
.ds-solution-block .progress-headline em { font-style: italic; color: var(--accent); }
.ds-solution-block .progress-sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}
.ds-solution-block .progress-rings {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .ring { text-align: center; }
.ds-solution-block .ring svg { width: 64px; height: 64px; }
.ds-solution-block .ring-lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}
.ds-solution-block .progress-line {
  margin-top: 14px;
  color: var(--accent-ink);
}
.ds-solution-block .progress-line svg { width: 100%; height: 80px; display: block; }
.ds-solution-block .progress-line-meta {
  display: flex; justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}
/* ---------- Editable headline ---------- */
.ds-solution-block [contenteditable="true"] {
  outline: none;
  border-radius: 4px;
  transition: box-shadow 0.2s;
}
.ds-solution-block [contenteditable="true"]:hover {
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.ds-solution-block [contenteditable="true"]:focus {
  box-shadow: 0 0 0 2px var(--accent);
}
/* ---------- Hero variant B (split with phone) ---------- */
.ds-solution-block .hero-b {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
  padding: 110px 56px;
  border-bottom: 1px solid var(--rule-soft);
}
.ds-solution-block .hero-b .left .display { font-size: clamp(46px, 6vw, 84px); }
/* ---------- Hero variant C (centered with thread) ---------- */
.ds-solution-block .hero-c {
  text-align: center;
  padding: 120px 56px 80px;
}
.ds-solution-block .hero-c .thread-wrap {
  margin: 56px auto 0;
  max-width: 540px;
  text-align: left;
}
/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .ds-solution-block .nav, .ds-solution-block .section, .ds-solution-block .closing, .ds-solution-block .hero-b, .ds-solution-block .footer-rule { padding-left: 24px; padding-right: 24px; }
  .ds-solution-block .feature, .ds-solution-block .hero-b { grid-template-columns: 1fr; gap: 40px; }
  .ds-solution-block .feature.reverse .feat-copy, .ds-solution-block .feature.reverse .feat-media { order: initial; }
  .ds-solution-block .system-grid { grid-template-columns: 1fr; }
  .ds-solution-block .system-grid .cell.span-2, .ds-solution-block .system-grid .cell.span-3, .ds-solution-block .system-grid .cell.span-4 { grid-column: span 1; }
  .ds-solution-block .intro-meta { grid-template-columns: 1fr; }
  .ds-solution-block .intro-meta > div { border-right: none; border-bottom: 1px solid var(--rule-soft); }
  .ds-solution-block .nav-left { display: none; }
}
/* Fade-in on scroll */
.ds-solution-block .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.ds-solution-block .reveal.in {
  opacity: 1;
  transform: none;
}