/* ============ ClassIQ — Design tokens ============ */
:root {
  --teal-900: #06363f;
  --teal-800: #0d4d58;
  --teal-700: #146570;
  --teal-600: #1a7a87;
  --teal-500: #2d9aa6;
  --teal-100: #d6eaeb;
  --teal-50: #ecf5f5;

  --coral: #e8765b;
  --coral-soft: #f7c8b8;
  --amber: #f2a03d;
  --amber-soft: #fadeb1;

  --cream: #ffffff;
  --cream-2: #f6f3ec;
  --paper: #ffffff;

  --ink: #0b2a30;
  --ink-2: #2a3f44;
  --muted: #607479;
  --muted-2: #8a9a9e;
  --line: #ebe6d8;
  --line-2: #f1ecde;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(11,42,48,.04), 0 1px 3px rgba(11,42,48,.04);
  --shadow: 0 4px 18px -8px rgba(11,42,48,.18), 0 1px 3px rgba(11,42,48,.05);
  --shadow-lg: 0 32px 60px -24px rgba(11,42,48,.25), 0 8px 18px -8px rgba(11,42,48,.10);

  --container: 1480px;
  --gutter: clamp(20px, 3.2vw, 48px);

  --font-sans: "Geist", "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", monospace;
  --font-serif: "Instrument Serif", "Georgia", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body {
  font-family: var(--font-sans);
  background: var(--cream);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: -0.005em;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container-narrow { max-width: 1080px; margin: 0 auto; padding: 0 var(--gutter); }

/* ============ Type scale ============ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-700);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--teal-700);
  opacity: .5;
}
h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: clamp(44px, 5.6vw, 76px); line-height: 1.02; letter-spacing: -0.035em; }
h2 { font-size: clamp(32px, 3.6vw, 48px); line-height: 1.08; }
h3 { font-size: 22px; line-height: 1.25; }
.italic-serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.015em;
}
p { margin: 0; color: var(--ink-2); }
.lede { font-size: 19px; line-height: 1.55; color: var(--ink-2); max-width: 60ch; }

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in oklab, var(--cream) 78%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid color-mix(in oklab, var(--line) 60%, transparent);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--teal-800);
}
.brand img {
  height: 32px;
  width: auto;
  display: block;
  mix-blend-mode: multiply; /* drops the warm-white background tint */
}
.brand-footer img {
  height: 40px;
}
.brand .brand-lc { font-weight: 600; }
.brand .brand-uc { font-weight: 700; color: var(--teal-700); }
.brand-bulb {
  width: 12px; height: 12px;
  position: relative;
  top: -10px;
  color: var(--amber);
}
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  position: relative;
  padding: 6px 2px;
  transition: color .2s ease;
  font-weight: 450;
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--teal-700); }
.nav-links a.is-active {
  color: var(--teal-800);
  font-weight: 500;
}
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--coral);
  transform-origin: left;
  animation: nav-underline-in .35s cubic-bezier(.2,.7,.2,1);
}
@keyframes nav-underline-in {
  0%   { transform: scaleX(0); opacity: 0; }
  100% { transform: scaleX(1); opacity: 1; }
}
.nav-cta { display: flex; gap: 8px; align-items: center; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--cream);
  box-shadow: 0 1px 0 rgba(255,255,255,.08) inset, 0 4px 14px -6px rgba(11,42,48,.4);
}
.btn-primary:hover { background: var(--teal-800); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: color-mix(in oklab, var(--ink) 14%, transparent);
}
.btn-ghost:hover { background: var(--paper); border-color: color-mix(in oklab, var(--ink) 22%, transparent); }
.btn-coral {
  background: var(--coral);
  color: white;
  box-shadow: 0 6px 20px -10px rgba(232,118,91,.7);
}
.btn-coral:hover { background: #db6a50; transform: translateY(-1px); }
.btn-lg { padding: 14px 22px; font-size: 15px; }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(2px); }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 88px 0 60px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow-row {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 24px;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--coral);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--coral) 22%, transparent);
}
.hero h1 .accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--teal-700);
}
.hero-sub {
  margin-top: 22px;
  font-size: 19px;
  color: var(--ink-2);
  max-width: 52ch;
  line-height: 1.55;
}
.hero-ctas {
  margin-top: 32px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.hero-meta {
  margin-top: 22px;
  display: flex;
  gap: 22px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}
.hero-meta .check {
  color: var(--teal-700);
  font-weight: 600;
}

/* ============ Section ============ */
section { padding: 84px 0; }
.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-head h2 { margin-top: 14px; }
.section-head .lede { margin-top: 18px; }

/* ============ Problem cards ============ */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.problem-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}
.problem-card .pnum {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--coral);
  letter-spacing: 0.1em;
}
.problem-card h3 {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 500;
}
.problem-card ul {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
}
.problem-card ul li {
  padding: 6px 0;
  border-top: 1px dashed var(--line);
}
.problem-card ul li:first-child { border-top: none; padding-top: 0; }

/* ============ Problem stage (interactive slides) ============ */
.problem-stage {
  margin-top: 36px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 28px;
  align-items: stretch;
}
.problem-stage .problem-list { order: 1; }
.problem-stage .problem-scene { order: 2; }
.problem-scene {
  position: relative;
  background: linear-gradient(180deg, var(--cream-2), var(--paper));
  border: 1px solid var(--line);
  border-radius: 22px;
  min-height: 520px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.ps-frame {
  position: absolute; inset: 0;
  padding: 26px;
  opacity: 0;
  transform: translateY(14px) scale(.985);
  transition: opacity .55s ease, transform .55s cubic-bezier(.2,.7,.2,1);
  pointer-events: none;
}
.ps-frame.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
@media (prefers-reduced-motion: reduce) {
  .ps-frame, .ps-frame * { animation: none !important; transition: opacity .2s linear !important; }
}

/* ---- Tabs (right) ---- */
.problem-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.problem-tab {
  position: relative;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px 20px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  row-gap: 6px;
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
  color: var(--ink);
  flex: 1;
  min-height: 0;
}
.problem-tab:hover { border-color: color-mix(in oklab, var(--teal-700) 30%, var(--line)); }
.problem-tab .pt-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: center;
  background: var(--cream-2);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 999px;
  grid-row: 1 / span 2;
}
.problem-tab .pt-heading {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -.015em;
  line-height: 1.15;
  color: var(--ink);
}
.problem-tab .pt-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .04em;
  color: var(--muted);
  text-transform: lowercase;
}
.problem-tab .pt-progress {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 10px;
  height: 2px;
  background: var(--line-2);
  border-radius: 2px;
  overflow: hidden;
  opacity: 0;
  transition: opacity .25s ease;
}
.problem-tab .pt-bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--teal-700);
  border-radius: 2px;
}
.problem-tab.is-active {
  background: var(--ink);
  border-color: var(--ink);
}
.problem-tab.is-active .pt-num {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.14);
  color: color-mix(in oklab, var(--cream) 70%, transparent);
}
.problem-tab.is-active .pt-heading { color: var(--cream); }
.problem-tab.is-active .pt-tag { color: color-mix(in oklab, var(--coral-soft) 80%, var(--cream)); }
.problem-tab.is-active .pt-progress { opacity: 1; background: rgba(255,255,255,.14); }
.problem-tab.is-active .pt-bar { background: var(--coral); }
@keyframes pt-fill { from { width: 0; } to { width: 100%; } }

/* ============ Scene 1 · Chat chaos ============ */
.ps-chrome {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.ps-chrome-dots { display:flex; gap:5px; }
.ps-chrome-dots span { width:9px; height:9px; border-radius:50%; background:var(--line); }
.ps-chrome-dots span:first-child { background:#e08a78; }
.ps-chrome-dots span:nth-child(2) { background:#f0c277; }
.ps-chrome-dots span:nth-child(3) { background:#8ec5a7; }
.ps-chrome-title { font-size: 12.5px; font-weight: 500; }
.ps-chrome-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .04em;
}
.ps-chat {
  margin-top: 14px;
  position: relative;
  height: calc(100% - 60px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-right: 4px;
  -webkit-mask-image: linear-gradient(180deg, #000 70%, transparent 100%);
          mask-image: linear-gradient(180deg, #000 70%, transparent 100%);
}
.ps-chat .msg {
  align-self: flex-start;
  max-width: 78%;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px 12px 12px 4px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink-2);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(10px);
}
.ps-chat .msg-teacher {
  background: color-mix(in oklab, var(--coral) 10%, var(--paper));
  border: 1px solid color-mix(in oklab, var(--coral) 32%, var(--line));
  border-left: 3px solid var(--coral);
  font-weight: 500;
  color: var(--ink);
  max-width: 92%;
}
.ps-chat .msg-author {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 4px;
}
.ps-frame[data-pidx="0"].is-active .ps-chat .msg {
  animation: msg-in .45s cubic-bezier(.2,.7,.2,1) forwards;
  animation-delay: var(--d, 0s);
}
.ps-frame[data-pidx="0"].is-active .ps-chat .msg-teacher {
  animation: msg-teacher-bury 5.4s cubic-bezier(.2,.7,.2,1) forwards;
}
@keyframes msg-in {
  0% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes msg-teacher-bury {
  0%   { opacity: 0; transform: translateY(14px); }
  10%  { opacity: 1; transform: translateY(0); }
  80%  { opacity: .35; filter: blur(0px); }
  100% { opacity: .15; filter: blur(.6px); }
}
.ps-chaos-tag {
  position: absolute;
  left: 26px; right: 26px; bottom: 22px;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  padding: 10px 14px;
  border-radius: 10px;
  display: flex; align-items: center; gap: 10px;
  opacity: 0;
  transform: translateY(8px);
  box-shadow: 0 16px 30px -16px rgba(11,42,48,.4);
}
.ps-chaos-tag .x { color: var(--coral); font-size: 16px; line-height: 1; }
.ps-frame[data-pidx="0"].is-active .ps-chaos-tag {
  animation: chaos-tag-in .5s ease 4.5s forwards;
}
@keyframes chaos-tag-in { to { opacity: 1; transform: translateY(0); } }

/* ============ Scene 2 · No school control ============ */
.ps-stack { display: flex; flex-direction: column; gap: 14px; height: 100%; justify-content: center; padding: 6px 4px; }
.ps-card-personal {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  position: relative;
  opacity: 0;
  transform: translateY(10px);
}
.ps-frame[data-pidx="1"].is-active .ps-card-personal {
  animation: ps-rise .5s ease .1s forwards;
}
.ps-row { display: flex; align-items: center; gap: 14px; }
.ps-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--teal-700); color: var(--cream);
  font-size: 14px; font-weight: 500;
  display: flex; align-items: center; justify-content: center;
}
.ps-name { font-size: 14px; font-weight: 500; }
.ps-phone {
  font-family: var(--font-mono);
  font-size: 13px;
  margin-top: 3px;
  display: flex; gap: 6px; align-items: baseline;
}
.ps-phone .lbl { color: var(--muted); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; }
.ps-phone .num {
  color: var(--coral);
  position: relative;
  padding: 1px 4px;
  border-radius: 3px;
  background: color-mix(in oklab, var(--coral) 12%, var(--paper));
}
.ps-frame[data-pidx="1"].is-active .ps-phone .num {
  animation: leak-flash 1.6s ease-in-out 1s infinite;
}
@keyframes leak-flash {
  0%, 100% { background: color-mix(in oklab, var(--coral) 12%, var(--paper)); }
  50%      { background: color-mix(in oklab, var(--coral) 30%, var(--paper)); }
}
.ps-leak { display: flex; gap: 6px; margin-top: 14px; flex-wrap: wrap; }
.leak-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--cream-2);
  border: 1px solid var(--line);
  color: var(--muted);
}
.leak-pill.leak-warn {
  background: color-mix(in oklab, var(--coral) 12%, var(--paper));
  border-color: color-mix(in oklab, var(--coral) 35%, var(--line));
  color: var(--coral);
}

.ps-card-3rd {
  background: var(--ink);
  color: var(--cream);
  border-radius: 14px;
  padding: 16px 18px;
  position: relative;
  opacity: 0;
  transform: translateY(10px);
}
.ps-frame[data-pidx="1"].is-active .ps-card-3rd {
  animation: ps-rise .5s ease .35s forwards;
}
.ps-3rd-app { display: flex; align-items: center; gap: 12px; }
.ps-3rd-logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: white; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.ps-3rd-name { font-size: 13.5px; font-weight: 500; }
.ps-3rd-sub { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .04em; opacity: .65; margin-top: 1px; }
.ps-3rd-flag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  background: var(--coral);
  color: var(--cream);
  padding: 4px 10px;
  border-radius: 999px;
}
.ps-3rd-list {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
  font-size: 12.5px;
  color: color-mix(in oklab, var(--cream) 80%, transparent);
}
.ps-3rd-list > div { display: flex; align-items: center; gap: 10px; }
.ps-3rd-list .dot.d-red { width: 7px; height: 7px; border-radius: 50%; background: var(--coral); display: inline-block; }

@keyframes ps-rise { to { opacity: 1; transform: translateY(0); } }

/* ============ Scene 3 · Parent overload ============ */
.ps-phone-lockscreen {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  background: radial-gradient(120% 60% at 50% 0%, color-mix(in oklab, var(--teal-700) 18%, var(--ink)) 0%, var(--ink) 70%);
  color: var(--cream);
  border-radius: 18px;
  padding: 20px 18px 60px;
  overflow: hidden;
}
.lk-time { text-align: center; padding: 6px 0 12px; opacity: .9; }
.lk-clock { font-size: 28px; font-weight: 300; letter-spacing: -.02em; font-family: var(--font-sans); }
.lk-date { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; opacity: .7; margin-top: 2px; }
.lk-stream {
  flex: 1;
  display: flex;
  flex-direction: column-reverse;
  gap: 7px;
  position: relative;
}
.lk-notice {
  background: color-mix(in oklab, var(--cream) 88%, transparent);
  color: var(--ink);
  border-radius: 12px;
  padding: 9px 12px;
  font-size: 12px;
  box-shadow: 0 4px 14px -6px rgba(0,0,0,.35);
  opacity: 0;
  transform: translateY(20px);
  backdrop-filter: blur(8px);
}
.lk-notice .lk-app {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}
.lk-notice .lk-body { line-height: 1.35; }
.lk-notice.lk-buried {
  background: color-mix(in oklab, var(--coral) 18%, var(--cream));
  color: var(--ink);
}
.lk-notice.lk-buried .lk-app { color: var(--coral); }
.ps-frame[data-pidx="2"].is-active .lk-notice {
  animation: lk-fall .5s cubic-bezier(.2,.7,.2,1) forwards;
  animation-delay: var(--d, 0s);
}
.ps-frame[data-pidx="2"].is-active .lk-notice.lk-buried {
  animation: lk-buried 5s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes lk-fall {
  0%   { opacity: 0; transform: translateY(-12px); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes lk-buried {
  0%   { opacity: 0; transform: translateY(-12px) scale(1); }
  10%  { opacity: 1; transform: translateY(0) scale(1); }
  80%  { opacity: .5; transform: translateY(0) scale(.98); filter: blur(0px); }
  100% { opacity: .35; transform: translateY(2px) scale(.97); filter: blur(.5px); }
}
.lk-counter {
  position: absolute;
  left: 0; right: 0; bottom: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
}
.lk-counter .num { font-size: 18px; color: var(--coral); font-weight: 500; }
.lk-counter .muted { color: color-mix(in oklab, var(--cream) 50%, transparent); }

/* ============ Scene 4 · Admin inefficiency ============ */
.ps-rollover {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  padding: 4px 2px 4px;
}
.rl-year {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.rl-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.rl-groups { display: flex; flex-direction: column; gap: 7px; }
.rl-grp {
  background: var(--cream-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12px;
  color: var(--ink-2);
}
.rl-grp.rl-empty {
  background: repeating-linear-gradient(45deg,
    var(--cream-2) 0 6px,
    var(--paper) 6px 12px);
  height: 32px;
  position: relative;
  overflow: hidden;
}
.rl-grp.rl-empty .bar {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: color-mix(in oklab, var(--teal-700) 28%, var(--paper));
  width: 0;
  border-right: 1px solid color-mix(in oklab, var(--teal-700) 40%, var(--line));
}
.rl-stamp {
  position: absolute;
  top: -10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 500;
}
.rl-stamp.rl-del {
  background: var(--coral);
  color: var(--cream);
}
.rl-stamp.rl-todo {
  background: var(--paper);
  color: var(--teal-700);
  border: 1px solid color-mix(in oklab, var(--teal-700) 30%, var(--line));
}
.ps-frame[data-pidx="3"].is-active .rl-y1 .rl-grp {
  animation: rl-strike 3s ease forwards;
  animation-delay: calc(var(--i, 0) * .25s + .3s);
}
.ps-frame[data-pidx="3"].is-active .rl-y1 .rl-grp:nth-child(1) { --i: 0; }
.ps-frame[data-pidx="3"].is-active .rl-y1 .rl-grp:nth-child(2) { --i: 1; }
.ps-frame[data-pidx="3"].is-active .rl-y1 .rl-grp:nth-child(3) { --i: 2; }
.ps-frame[data-pidx="3"].is-active .rl-y1 .rl-grp:nth-child(4) { --i: 3; }
@keyframes rl-strike {
  0%   { color: var(--ink-2); text-decoration: none; opacity: 1; }
  60%  { color: var(--coral); text-decoration: line-through; opacity: 1; }
  100% { color: var(--coral); text-decoration: line-through; opacity: .5; }
}
.ps-frame[data-pidx="3"].is-active .rl-y2 .rl-empty .bar {
  animation: rl-rebuild 4.5s cubic-bezier(.4,0,.6,1) forwards;
  animation-delay: calc(var(--i, 0) * .25s + 1.8s);
}
.ps-frame[data-pidx="3"].is-active .rl-y2 .rl-empty:nth-child(1) .bar { --i: 0; }
.ps-frame[data-pidx="3"].is-active .rl-y2 .rl-empty:nth-child(2) .bar { --i: 1; }
.ps-frame[data-pidx="3"].is-active .rl-y2 .rl-empty:nth-child(3) .bar { --i: 2; }
.ps-frame[data-pidx="3"].is-active .rl-y2 .rl-empty:nth-child(4) .bar { --i: 3; }
@keyframes rl-rebuild {
  0%   { width: 0; }
  100% { width: 38%; }
}
.rl-arrow {
  color: var(--teal-700);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.rl-arrow-lbl {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.rl-scatter {
  position: absolute;
  left: 22px; right: 22px; bottom: 22px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.sc-chip {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .04em;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--muted);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(6px);
}
.ps-frame[data-pidx="3"].is-active .sc-chip {
  animation: sc-in .4s ease forwards;
  animation-delay: calc(var(--i, 0) * .12s + 2.6s);
}
.ps-frame[data-pidx="3"].is-active .sc-chip:nth-child(1) { --i: 0; }
.ps-frame[data-pidx="3"].is-active .sc-chip:nth-child(2) { --i: 1; }
.ps-frame[data-pidx="3"].is-active .sc-chip:nth-child(3) { --i: 2; }
.ps-frame[data-pidx="3"].is-active .sc-chip:nth-child(4) { --i: 3; }
.ps-frame[data-pidx="3"].is-active .sc-chip:nth-child(5) { --i: 4; }
@keyframes sc-in { to { opacity: 1; transform: translateY(0); } }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .problem-stage { grid-template-columns: 1fr; }
  .problem-scene { min-height: 460px; }
  .ps-rollover { grid-template-columns: 1fr; }
  .rl-arrow svg { transform: rotate(90deg); }
}
@media (max-width: 560px) {
  .problem-scene { min-height: 420px; padding: 0; }
  .problem-tab { padding: 14px 16px 18px; }
  .problem-tab .pt-heading { font-size: 17px; }
  .rl-scatter { position: static; margin-top: 12px; }
}

/* ============ Solution band ============ */
.solution-band {
  background: var(--ink);
  color: var(--cream);
  border-radius: var(--radius-lg);
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
}
.solution-band::after {
  content: "";
  position: absolute;
  right: -120px; bottom: -120px;
  width: 360px; height: 360px;
  background: radial-gradient(circle, color-mix(in oklab, var(--teal-500) 60%, transparent), transparent 70%);
  pointer-events: none;
}
.solution-band .eyebrow {
  font-size: 14px;
  letter-spacing: .2em;
}
.solution-band h2 {
  color: var(--cream);
  max-width: 18ch;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.02;
  letter-spacing: -.03em;
}
.solution-band .accent {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--amber);
  font-weight: 400;
}
.solution-band .lede {
  color: color-mix(in oklab, var(--cream) 80%, transparent);
  font-size: 14px;
  line-height: 1.55;
  max-width: 62ch;
}
.solution-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  margin-top: 56px;
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 40px;
}
.stat .stat-val {
  font-size: clamp(72px, 7vw, 104px);
  letter-spacing: -0.04em;
  line-height: 1;
  font-weight: 500;
}
.stat .stat-val .small { font-size: clamp(26px, 2.2vw, 34px); color: var(--amber); margin-left: 4px; }
.stat .stat-lbl {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.45;
  color: color-mix(in oklab, var(--cream) 75%, transparent);
  max-width: 22ch;
}

/* ============ Feature grid ============ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.feature {
  background: var(--paper);
  padding: 28px 26px;
  position: relative;
}
.feature .ficon {
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--teal-50);
  color: var(--teal-700);
  margin-bottom: 18px;
}
.feature h3 {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.feature p { font-size: 14px; margin-top: 8px; color: var(--muted); line-height: 1.55; }
.feature .badge {
  position: absolute;
  top: 18px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--amber);
  text-transform: uppercase;
}

/* ============ Role tabs ============ */
.roles {
  background: var(--cream-2);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  align-items: start;
}
.role-tabs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.role-tab {
  text-align: left;
  background: transparent;
  border: 0;
  padding: 16px 18px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background .15s;
}
.role-tab:hover { background: color-mix(in oklab, var(--paper) 70%, transparent); }
.role-tab.active { background: var(--paper); box-shadow: var(--shadow-sm); }
.role-tab .rname {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}
.role-tab .rname .ricon {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--teal-100);
  border-radius: 6px;
  color: var(--teal-700);
}
.role-tab .rdesc {
  font-size: 13px;
  color: var(--muted);
  padding-left: 32px;
}
.role-tab.active .rname { color: var(--teal-800); }

.role-panel {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  min-height: 460px;
}
.role-panel h3 {
  font-size: 26px;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin-bottom: 6px;
}
.role-panel .rsub { color: var(--muted); font-size: 15px; }
.role-features {
  margin-top: 24px;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 28px;
}
.role-features li {
  font-size: 14px;
  color: var(--ink-2);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.role-features li::before {
  content: "";
  flex: none;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--coral);
  margin-top: 8px;
}

/* ============ How it works ============ */
.howitworks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 28px;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral);
}
.step h3 {
  margin-top: 14px;
  font-size: 17px;
  font-weight: 500;
}
.step p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
}
.step-line {
  position: absolute;
  top: 8px;
  left: 28px;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, var(--coral) 14%, var(--line) 14%);
}
.step:last-child .step-line { display: none; }

/* ============ Coming soon ============ */
.coming-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.coming-card {
  background: var(--paper);
  border: 1px dashed color-mix(in oklab, var(--amber) 50%, var(--line));
  border-radius: var(--radius);
  padding: 28px;
}
.coming-card .stamp {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--amber) 18%, var(--paper));
  color: #a55a06;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.coming-card h3 { font-size: 18px; font-weight: 500; }
.coming-card p { margin-top: 8px; font-size: 14px; color: var(--muted); }

/* ============ Pricing teaser ============ */
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.price-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column;
}
.price-card.featured {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}
.price-card .pname {
  font-size: 14px;
  font-weight: 500;
  color: var(--teal-700);
  letter-spacing: -0.005em;
}
.price-card.featured .pname { color: var(--amber); }
.price-card .pamt {
  margin-top: 14px;
  font-size: 38px;
  letter-spacing: -0.03em;
  font-weight: 500;
}
.price-card .pamt .per {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0;
}
.price-card.featured .pamt .per { color: color-mix(in oklab, var(--cream) 60%, transparent); }
.price-card .pdesc {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}
.price-card.featured .pdesc { color: color-mix(in oklab, var(--cream) 70%, transparent); }
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  font-size: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.price-card ul li {
  display: flex; gap: 10px; align-items: flex-start;
  color: var(--ink-2);
}
.price-card.featured ul li { color: color-mix(in oklab, var(--cream) 85%, transparent); }
.price-card ul li svg { flex: none; margin-top: 3px; color: var(--teal-600); }
.price-card.featured ul li svg { color: var(--amber); }
.price-card .btn { margin-top: 22px; width: 100%; justify-content: center; }

/* ============ CTA band ============ */
.cta-band {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.cta-band h2 { max-width: 22ch; }
.cta-band p { color: var(--muted); margin-top: 12px; }

/* ============ Footer ============ */
footer {
  padding: 72px 0 32px;
  border-top: 1px solid var(--line);
  margin-top: 64px;
  font-size: 14px;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 14px;
}
.footer-col ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 8px;
}
.footer-col a { color: var(--muted); font-size: 14px; }
.footer-col a:hover { color: var(--teal-700); }
.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted-2);
}

/* ============ Visual: Product mock surface ============ */
.surface {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}
.surface-bar {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in oklab, var(--cream) 60%, var(--paper));
  display: flex; align-items: center; gap: 10px;
}
.tlights { display: flex; gap: 6px; }
.tlights span { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.tlights span:nth-child(1) { background: #f7b3a3; }
.tlights span:nth-child(2) { background: #fadeb1; }
.tlights span:nth-child(3) { background: #b8dad1; }
.surface-bar .tab {
  margin-left: 12px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--muted);
  background: var(--paper);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
}

/* Hero product preview */
.hero-preview {
  position: relative;
  aspect-ratio: 5/4;
  width: 100%;
}
.preview-stack {
  position: absolute;
  inset: 0;
}
.preview-dash {
  position: absolute;
  inset: 0 60px 60px 0;
}
.preview-phone {
  position: absolute;
  right: 0; bottom: 0;
  width: 200px;
  aspect-ratio: 9/19;
  background: var(--ink);
  border-radius: 28px;
  padding: 8px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--teal-800);
}
.preview-phone-inner {
  width: 100%; height: 100%;
  background: var(--paper);
  border-radius: 22px;
  overflow: hidden;
  display: flex; flex-direction: column;
}

/* ============ Tag pill ============ */
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: color-mix(in oklab, var(--coral) 12%, var(--cream));
  color: var(--coral);
  font-size: 12px;
  font-family: var(--font-mono);
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

/* ============ Responsive ============ */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .howitworks { grid-template-columns: repeat(2, 1fr); }
  .coming-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  .pricing-cards { grid-template-columns: 1fr; }
  .roles { grid-template-columns: 1fr; padding: 28px; }
  .solution-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-band { grid-template-columns: 1fr; padding: 36px; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  section { padding: 56px 0; }
  .problem-grid, .features-grid { grid-template-columns: 1fr; }
  .howitworks { grid-template-columns: 1fr; }
  .solution-band { padding: 32px 24px; }
  .solution-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .role-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}