/* SEMSTUDIO marketing — editorial research product look */
:root {
  --bg: #f2f7fb;
  --bg-deep: #e6f0f7;
  --ink: #0f2a3d;
  --mute: #5a7388;
  --line: rgba(20, 55, 80, 0.12);
  --teal: #0d9488;
  --teal-soft: rgba(13, 148, 136, 0.14);
  --sky: #0284c7;
  --panel: #ffffff;
  --display: "Syne", system-ui, sans-serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.55;
  background:
    radial-gradient(ellipse 80% 50% at 88% 8%, rgba(13, 148, 136, 0.16), transparent 55%),
    radial-gradient(ellipse 55% 40% at 0% 20%, rgba(2, 132, 199, 0.1), transparent 50%),
    linear-gradient(180deg, #f8fcff 0%, var(--bg) 45%, #eef5fa 100%);
}
a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }

/* Nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  background: rgba(248, 252, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled { border-bottom-color: var(--line); }
.sn-brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  margin-right: auto;
  color: var(--ink);
  text-decoration: none;
}
.sn-brand span { color: var(--teal); }
.sn-brand:hover { text-decoration: none; }
.sn-link, .more-btn {
  background: transparent;
  border: 0;
  color: var(--mute);
  padding: 8px 11px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.86rem;
}
.sn-link:hover, .more-btn:hover { color: var(--ink); background: rgba(15, 42, 61, 0.04); }
.sn-link.on { color: var(--ink); background: var(--teal-soft); font-weight: 600; }
.sn-cta {
  margin-left: 8px;
  background: var(--ink);
  color: #fff !important;
  border: 0;
  border-radius: 999px;
  padding: 9px 16px;
  font-weight: 600;
  font-size: 0.86rem;
  text-decoration: none !important;
  transition: background 0.2s, transform 0.15s;
}
.sn-cta:hover { background: var(--teal); transform: translateY(-1px); }
.more-wrap { position: relative; }
.more-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 210px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(15, 42, 61, 0.12);
  padding: 8px;
  z-index: 50;
}
.more-wrap.open .more-menu { display: flex; flex-direction: column; }
.more-menu button, .more-menu a {
  background: transparent;
  border: 0;
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.86rem;
  text-decoration: none;
}
.more-menu button:hover, .more-menu a:hover {
  background: var(--teal-soft);
  color: var(--teal);
}

.shell { max-width: var(--max); margin: 0 auto; padding: 8px 24px 48px; }
.page { display: none; animation: fadeIn 0.35s ease; }
.page.on { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--sky);
  font-weight: 600;
}
.page-head {
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
}
.page-head h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.6rem);
  letter-spacing: -0.04em;
  margin: 0;
  line-height: 1.05;
}
.page-head h1 span { color: var(--teal); }
.page-head .lede {
  margin: 12px 0 0;
  color: var(--mute);
  max-width: 42ch;
  font-size: 1.02rem;
}

/* Hero — one composition */
.hero {
  position: relative;
  min-height: min(78vh, 640px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: 36px 0 64px;
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 24px 0 48px; }
  .hero-visual { order: -1; max-width: 420px; margin: 0 auto; }
}
.hero-copy { position: relative; z-index: 1; }
.hero-brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(3.2rem, 8vw, 5.4rem);
  letter-spacing: -0.055em;
  line-height: 0.92;
  margin: 0 0 22px;
}
.hero-brand span { color: var(--teal); }
.hero-line {
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  max-width: 22ch;
}
.hero-sub {
  margin: 0 0 28px;
  color: var(--mute);
  font-size: 1.05rem;
  max-width: 38ch;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-visual {
  position: relative;
  z-index: 1;
  border-radius: 24px;
  background:
    linear-gradient(160deg, rgba(255,255,255,0.92), rgba(232,241,248,0.85));
  border: 1px solid rgba(197, 216, 232, 0.7);
  box-shadow: 0 24px 60px rgba(15, 42, 61, 0.1);
  padding: 28px 22px 24px;
  overflow: hidden;
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(13,148,136,0.2), transparent 70%);
  animation: drift 12s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate(0, 0); }
  to { transform: translate(-18px, 24px); }
}
.diagram-label {
  position: relative;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mute);
  font-weight: 600;
  margin: 0 0 16px;
}
.diagram-svg { position: relative; width: 100%; height: auto; display: block; }
.diagram-caption {
  position: relative;
  margin: 14px 0 0;
  font-size: 0.82rem;
  color: var(--mute);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  padding: 13px 22px;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none !important;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover { background: var(--teal); color: #fff; transform: translateY(-1px); }
.btn.sec {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 12px 20px;
}
.btn.sec:hover {
  border-color: var(--teal);
  color: var(--teal);
  background: var(--teal-soft);
  transform: none;
}

/* Sections — no nested card dashboards */
.section {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}
.section-label {
  margin: 0 0 18px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--sky);
  font-weight: 600;
}
.section h2 {
  font-family: var(--display);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  letter-spacing: -0.03em;
  margin: 0 0 10px;
}
.section > .lede {
  margin: 0 0 28px;
  color: var(--mute);
  max-width: 48ch;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}
.section-head .lede { margin: 8px 0 0; }
.section-head h2 { margin-bottom: 0; }
.section-link {
  background: none;
  border: 0;
  color: var(--sky);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0;
  text-decoration: none;
}
.section-link:hover { color: var(--teal); text-decoration: underline; }

.trust-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  align-items: center;
  padding: 0 0 8px;
  margin-top: -28px;
  margin-bottom: 8px;
  color: var(--mute);
  font-size: 0.86rem;
}
.trust-bar a {
  color: var(--mute);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.trust-bar a:hover { color: var(--teal); border-bottom-color: var(--teal); }
.trust-bar .sep { opacity: 0.35; user-select: none; }

.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
@media (max-width: 800px) { .cap-grid { grid-template-columns: 1fr; gap: 28px; } }
.cap-col h3 {
  margin: 0 0 14px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sky);
  font-weight: 600;
}
.cap-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.cap-col li {
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 500;
}
.cap-col li span {
  display: block;
  margin-top: 3px;
  color: var(--mute);
  font-size: 0.84rem;
  font-weight: 400;
}

.home-samples { border-top: 1px solid var(--line); }
.home-samples .sample-row:first-child { padding-top: 4px; }

.report-band {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 36px;
  align-items: center;
}
@media (max-width: 800px) { .report-band { grid-template-columns: 1fr; } }
.report-points {
  list-style: none;
  margin: 0;
  padding: 0;
}
.report-points li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--mute);
  font-size: 0.95rem;
}
.report-points li:last-child { border-bottom: 0; }
.report-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

.cta-band {
  margin-top: 8px;
  padding: 48px 0 16px;
  border-top: 1px solid var(--line);
  text-align: center;
}
.cta-band h2 {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}
.cta-band p {
  margin: 0 auto 24px;
  color: var(--mute);
  max-width: 42ch;
}
.cta-band .hero-actions { justify-content: center; }

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.flow article {
  padding: 8px 28px 8px 0;
  border-right: 1px solid var(--line);
}
.flow article:last-child { border-right: 0; padding-right: 0; }
.flow .num {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--teal);
  font-weight: 500;
  margin-bottom: 10px;
}
.flow h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
}
.flow p {
  margin: 0;
  color: var(--mute);
  font-size: 0.95rem;
  max-width: 28ch;
}
@media (max-width: 760px) {
  .flow { grid-template-columns: 1fr; gap: 28px; }
  .flow article { border-right: 0; padding: 0; border-bottom: 1px solid var(--line); padding-bottom: 24px; }
  .flow article:last-child { border-bottom: 0; padding-bottom: 0; }
}

.audience {
  display: grid;
  gap: 0;
}
.audience-row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.audience-row:last-child { border-bottom: 0; }
.audience-row h3 {
  margin: 0;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}
.audience-row p {
  margin: 0;
  color: var(--mute);
  font-size: 0.95rem;
  max-width: 52ch;
}
.audience-row a, .audience-row button {
  background: none;
  border: 0;
  color: var(--sky);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0;
  white-space: nowrap;
}
.audience-row a:hover, .audience-row button:hover { color: var(--teal); text-decoration: underline; }
@media (max-width: 700px) {
  .audience-row { grid-template-columns: 1fr; gap: 8px; }
}

.content-block { max-width: 720px; }
.content-block h2, .content-block h3 {
  font-family: var(--display);
  letter-spacing: -0.02em;
}
.content-block h2 { font-size: 1.4rem; margin: 0 0 12px; }
.content-block h3 { font-size: 1.05rem; margin: 28px 0 10px; color: var(--ink); }
.content-block p, .content-block li { color: var(--mute); }
.content-block ol { padding-left: 1.2rem; line-height: 1.75; }

.sample-list { border-top: 1px solid var(--line); }
.sample-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.sample-row h3 { margin: 0; font-size: 1.02rem; }
.sample-row p { margin: 4px 0 0; color: var(--mute); font-size: 0.9rem; }

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 28px 0;
}
@media (max-width: 800px) { .plan-grid { grid-template-columns: 1fr; } }
.plan {
  padding: 28px 24px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.55);
}
.plan.featured {
  background: var(--panel);
  border-color: rgba(13, 148, 136, 0.45);
  box-shadow: 0 16px 40px rgba(15, 42, 61, 0.08);
}
.plan .tier {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mute);
  font-weight: 600;
}
.plan .price {
  font-family: var(--display);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 10px 0 14px;
}
.plan ul {
  margin: 0 0 20px;
  padding-left: 1.1rem;
  color: var(--mute);
  font-size: 0.92rem;
}
.plan li { margin-bottom: 7px; }
.note {
  margin: 0 0 8px;
  padding: 14px 16px;
  border-left: 3px solid var(--teal);
  background: var(--teal-soft);
  color: #0f5c56;
  font-size: 0.92rem;
  border-radius: 0 10px 10px 0;
}

.compare-title {
  font-family: var(--display);
  letter-spacing: -0.02em;
  font-size: 1.15rem;
  margin: 28px 0 8px;
  color: var(--ink);
  font-weight: 700;
}
.compare-hint {
  margin: 0 0 14px;
  color: var(--mute);
  font-size: 0.9rem;
  max-width: 62ch;
}
.compare-wrap {
  overflow: auto;
  margin-top: 0;
  border-top: 1px solid var(--line);
}
.compare-group td {
  padding-top: 18px !important;
  padding-bottom: 8px !important;
  font-size: 0.7rem !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700 !important;
  color: var(--sky) !important;
  background: transparent !important;
  border-bottom-color: transparent !important;
  text-align: left !important;
}
.compare-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}
.compare-wrap th, .compare-wrap td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.compare-wrap th {
  color: var(--mute);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.compare-wrap td:not(:first-child),
.compare-wrap th:not(:first-child) {
  text-align: center;
  width: 7.5rem;
}
.yes {
  color: var(--teal);
  font-weight: 600;
  font-size: 1rem;
}
.no {
  color: #b7c4ce;
  font-weight: 400;
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  float: right;
  color: var(--mute);
  font-weight: 500;
}
.faq details[open] summary::after { content: "–"; }
.faq details[open] summary { color: var(--teal); }
.faq p { margin: 10px 0 0; color: var(--mute); font-size: 0.95rem; max-width: 62ch; }

.cite-box {
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 18px;
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--line);
  border-radius: 12px;
  white-space: pre-wrap;
  color: var(--ink);
}
.form-stack { display: grid; gap: 14px; max-width: 460px; }
.form-stack label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--mute);
  margin-bottom: 6px;
}
.form-stack input, .form-stack select, .form-stack textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  background: rgba(255,255,255,0.8);
  color: var(--ink);
  font: inherit;
}
.form-stack textarea { min-height: 110px; resize: vertical; }
.form-stack input:focus, .form-stack select:focus, .form-stack textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-soft);
}
.ok-msg { color: #0f766e; font-weight: 600; font-size: 0.9rem; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.changelog { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.changelog li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--mute);
}
.changelog strong { color: var(--ink); display: block; margin-bottom: 4px; font-family: var(--display); letter-spacing: -0.02em; }

.site-footer {
  margin: 0;
  max-width: none;
  padding: 0;
  border-top: 0;
  background: #0f1c28;
  color: #9aafbf;
  font-size: 0.85rem;
}
.site-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px 24px 28px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1fr 1fr;
  gap: 32px 24px;
  margin-bottom: 40px;
}
@media (max-width: 960px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
}
.foot-brand-block .mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.foot-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.foot-brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: 0.02em;
}
.foot-brand span { color: var(--teal); }
.foot-eyebrow {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7a93a6;
}
.foot-copy {
  margin: 0 0 22px;
  max-width: 34ch;
  line-height: 1.55;
  color: #9aafbf;
}
.foot-news h5 {
  margin: 0 0 6px;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #c5d4de;
  font-weight: 600;
}
.foot-news p {
  margin: 0 0 12px;
  font-size: 0.84rem;
  color: #8aa0b0;
  max-width: 34ch;
}
.news-row {
  display: flex;
  gap: 0;
  max-width: 340px;
}
.news-row input {
  flex: 1;
  min-width: 0;
  border: 1px solid #2a3f50;
  border-right: 0;
  border-radius: 4px 0 0 4px;
  background: #162736;
  color: #e8f0f5;
  padding: 10px 12px;
  font: inherit;
  font-size: 0.86rem;
}
.news-row input::placeholder { color: #6f8799; }
.news-row input:focus {
  outline: none;
  border-color: var(--teal);
}
.news-row button {
  border: 0;
  border-radius: 0 4px 4px 0;
  background: #c0266b;
  color: #fff;
  font-weight: 600;
  font-size: 0.86rem;
  padding: 10px 14px;
  white-space: nowrap;
}
.news-row button:hover { background: #a81e5a; }
.news-ok {
  display: none;
  margin: 8px 0 0;
  color: #5eead4;
  font-size: 0.82rem;
  font-weight: 600;
}
.news-ok.on { display: block; }
.site-footer h4 {
  margin: 0 0 14px;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #e8f0f5;
  font-weight: 600;
}
.site-footer button,
.site-footer a.foot-link {
  display: block;
  background: none;
  border: 0;
  padding: 5px 0;
  color: #9aafbf;
  font-weight: 500;
  font-size: 0.88rem;
  text-align: left;
  text-decoration: none;
}
.site-footer button:hover,
.site-footer a.foot-link:hover { color: #5eead4; }
.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 20px;
  padding-top: 22px;
  border-top: 1px solid rgba(154, 175, 191, 0.18);
  color: #7a93a6;
  font-size: 0.8rem;
}
.foot-bottom a { color: #9aafbf; text-decoration: none; }
.foot-bottom a:hover { color: #5eead4; }