/* QWD design system — platinum/graphite, cool, monochrome, engineered.
   One sans typeface, high contrast, lots of air, no warm tones, no gradients. */

@font-face {
  font-family: "Geist";
  src: url("/assets/fonts/geist.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #e9ebee;        /* platinum */
  --surface: #f6f7f9;
  --graphite: #141619;  /* dark band */
  --ink: #0f1114;
  --ink-2: #4e545c;
  --ink-3: #868d97;
  --line: #d2d6dc;
  --line-2: #c3c8d0;
  --accent: #5b6672;    /* cool steel, used sparingly */
  --on-dark: #e9ebee;
  --on-dark-2: #9aa2ad;

  --sans: "Geist", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;

  --maxw: 1080px;
  --gutter: clamp(1rem, 5vw, 4rem);

  --s-1: clamp(0.8rem, 0.78rem + 0.1vw, 0.86rem);
  --s0: clamp(1rem, 0.97rem + 0.15vw, 1.08rem);
  --s1: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);
  --s2: clamp(1.5rem, 1.3rem + 0.9vw, 2rem);
  --s3: clamp(2.2rem, 1.7rem + 2.2vw, 3.4rem);
  --s4: clamp(3rem, 2rem + 5vw, 6rem);

  --dur: 420ms;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--s0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 640;
  letter-spacing: -0.025em;
  line-height: 1.03;
  text-wrap: balance;
}
p {
  margin: 0;
  text-wrap: pretty;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}
.rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.label {
  font-size: var(--s-1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.label::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: var(--accent);
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font: inherit;
  font-size: var(--s-1);
  font-weight: 560;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--bg);
  background: var(--ink);
  border: 1px solid var(--ink);
  padding: 0.85rem 1.4rem;
  border-radius: 3px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), transform 140ms var(--ease);
}
.btn:hover {
  background: #2b2f36;
}
.btn:active {
  transform: translateY(1px);
}
.btn--light {
  color: var(--ink);
  background: var(--bg);
  border-color: var(--bg);
}
.btn--light:hover {
  background: #fff;
}
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn--ghost {
  color: var(--ink);
  background: transparent;
  border-color: var(--line-2);
}
.btn--ghost:hover {
  background: transparent;
  border-color: var(--ink);
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(120%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 680;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}
.brand .dot {
  color: var(--accent);
}
.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
}
.nav a {
  text-decoration: none;
  font-size: var(--s-1);
  color: var(--ink-2);
}
.nav a:hover {
  color: var(--ink);
}
@media (max-width: 620px) {
  .nav a:not(.btn) {
    display: none;
  }
}
.brand small {
  font-size: 0.6rem;
  letter-spacing: 0.26em;
  color: var(--ink-3);
  font-weight: 500;
}

/* hero */
.hero {
  padding-block: clamp(4rem, 12vw, 9rem) clamp(3rem, 8vw, 6rem);
}
.hero h1 {
  font-size: var(--s4);
  max-width: 13ch;
  margin-top: 1.6rem;
}
.hero p {
  margin-top: 1.6rem;
  font-size: var(--s1);
  color: var(--ink-2);
  max-width: 40ch;
}
.hero .cta {
  margin-top: 2.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.4rem;
  align-items: center;
}
.hero .cta .sub {
  font-size: var(--s-1);
  color: var(--ink-3);
}

/* spec rows (the concepts) */
.specs {
  margin: 0;
}
.spec {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem 2rem;
  padding-block: clamp(1.2rem, 3vw, 1.8rem);
  border-top: 1px solid var(--line);
}
.spec:last-child {
  border-bottom: 1px solid var(--line);
}
@media (min-width: 680px) {
  .spec {
    grid-template-columns: 0.4fr 0.6fr;
    align-items: baseline;
  }
}
.spec dt {
  font-size: var(--s2);
  font-weight: 620;
  letter-spacing: -0.02em;
}
.spec dd {
  margin: 0;
  color: var(--ink-2);
  font-size: var(--s1);
}

/* proof */
.proof {
  background: var(--surface);
  border-block: 1px solid var(--line);
}
.proof h2 {
  font-size: var(--s3);
  max-width: 18ch;
}
.proof p {
  margin-top: 1.4rem;
  color: var(--ink-2);
  font-size: var(--s1);
  max-width: 44ch;
}

/* pricing */
.pricing-head {
  font-size: var(--s3);
  max-width: 22ch;
  margin-top: 1.4rem;
}
.pricing {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}
@media (min-width: 780px) {
  .pricing {
    grid-template-columns: 1fr 1fr;
  }
}
.plan {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: clamp(1.6rem, 3vw, 2.4rem);
}
.plan--dark {
  background: var(--graphite);
  color: var(--on-dark);
  border-color: var(--graphite);
}
.plan__name {
  font-size: var(--s-1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 560;
  color: var(--ink-3);
}
.plan--dark .plan__name {
  color: var(--on-dark-2);
}
.plan__price {
  font-size: var(--s3);
  font-weight: 660;
  letter-spacing: -0.03em;
  margin-top: 0.7rem;
}
.plan__price span {
  font-size: var(--s0);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--ink-3);
}
.plan--dark .plan__price span {
  color: var(--on-dark-2);
}
.plan__sub {
  margin-top: 0.5rem;
  color: var(--ink-2);
}
.plan--dark .plan__sub {
  color: var(--on-dark-2);
}
.plan__list {
  list-style: none;
  margin: 1.5rem 0 2rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}
.plan__list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ink-2);
}
.plan--dark .plan__list li {
  color: #c4cad2;
}
.plan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 0.5rem;
  height: 0.75rem;
  border-right: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(40deg);
}
.plan .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* report / conversion band */
.report {
  background: var(--graphite);
  color: var(--on-dark);
}
.report__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
}
@media (min-width: 820px) {
  .report__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}
.report h2 {
  font-size: var(--s3);
  color: #fff;
  max-width: 14ch;
}
.report .lead {
  margin-top: 1.4rem;
  color: var(--on-dark-2);
  font-size: var(--s1);
  max-width: 36ch;
}
.report .label {
  color: var(--on-dark-2);
}
.report .label::before {
  background: var(--on-dark-2);
}

/* form */
.form {
  display: grid;
  gap: 1.3rem;
}
.field {
  display: grid;
  gap: 0.45rem;
}
.field label {
  font-size: var(--s-1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-dark-2);
}
.field input {
  font: inherit;
  font-size: var(--s0);
  color: #fff;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #3a3f47;
  padding: 0.7rem 0.1rem;
  width: 100%;
  transition: border-color 200ms var(--ease);
}
.field input::placeholder {
  color: #676e78;
}
.field input:focus {
  outline: none;
  border-color: #cfd4da;
}
.field--invalid input {
  border-color: #d98b6a;
}
.field__error {
  font-size: 0.82rem;
  color: #e3a184;
  min-height: 1.05em;
}
.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.3rem;
  margin-top: 0.3rem;
}
.form__note {
  font-size: 0.8rem;
  color: #767d87;
  max-width: 32ch;
}
.form__note a {
  color: #aab1bb;
}
.form__status {
  font-size: var(--s-1);
  min-height: 1.1em;
}
.form__status--ok {
  color: #a6c8b0;
}
.form__status--err {
  color: #e3a184;
}
.form-success {
  border: 1px solid #3a3f47;
  padding: clamp(1.4rem, 4vw, 2rem);
}
.form-success h3 {
  color: #fff;
  font-size: var(--s2);
  margin-bottom: 0.5rem;
}
.form-success p {
  color: var(--on-dark-2);
}
[hidden] {
  display: none !important;
}

/* footer */
.site-footer {
  padding-block: clamp(2rem, 5vw, 3rem);
  border-top: 1px solid var(--line);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.6rem;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-3);
  font-size: var(--s-1);
}
.site-footer a {
  color: var(--ink-2);
  text-decoration: none;
}
.site-footer a:hover {
  color: var(--ink);
}
.site-footer nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
}

/* legal / text pages */
.doc {
  padding-block: clamp(3rem, 7vw, 5rem);
  max-width: 68ch;
}
.doc h1 {
  font-size: var(--s3);
  margin-bottom: 1.3rem;
}
.doc h2 {
  font-size: var(--s1);
  font-weight: 620;
  margin-top: 2.2rem;
  margin-bottom: 0.6rem;
}
.doc p,
.doc li {
  color: var(--ink-2);
}
.doc ul {
  padding-left: 1.1rem;
}
.doc li + li {
  margin-top: 0.4rem;
}
.doc a {
  color: var(--accent);
}

/* blog index */
.blog-title {
  font-size: var(--s3);
  margin-top: 1rem;
  max-width: 18ch;
}
.blog-intro {
  margin-top: 1rem;
  color: var(--ink-2);
  max-width: 48ch;
}
.post-list {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  padding: 0;
}
.post-item {
  border-top: 1px solid var(--line);
}
.post-item:last-child {
  border-bottom: 1px solid var(--line);
}
.post-item__link {
  display: grid;
  gap: 0.4rem;
  padding-block: clamp(1.2rem, 3vw, 1.7rem);
  text-decoration: none;
  color: var(--ink);
}
.post-item__meta {
  font-size: var(--s-1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.post-item__title {
  font-size: var(--s2);
  font-weight: 620;
  letter-spacing: -0.02em;
}
.post-item__link:hover .post-item__title {
  color: var(--accent);
}
.post-item__dek {
  color: var(--ink-2);
  max-width: 72ch;
}

/* blog post */
.post {
  max-width: 46rem;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}
.post__back {
  font-size: var(--s-1);
}
.post__cat {
  margin-top: 1.8rem;
  font-size: var(--s-1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.post h1 {
  font-size: var(--s3);
  margin-top: 0.5rem;
  max-width: 22ch;
}
.post__meta {
  margin-top: 0.8rem;
  color: var(--ink-3);
  font-size: var(--s-1);
}
.prose {
  margin-top: 2rem;
  line-height: 1.75;
}
.prose > p:first-of-type {
  font-size: var(--s1);
}
.prose p {
  margin: 1.1rem 0;
}
.prose h2 {
  font-size: var(--s1);
  font-weight: 620;
  letter-spacing: -0.01em;
  margin: 2.3rem 0 0.5rem;
}
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.prose strong {
  font-weight: 620;
}
.post__cta {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.6rem;
  align-items: center;
  justify-content: space-between;
}
.post__cta p {
  color: var(--ink-2);
}

.arrowlink {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  text-decoration: none;
  font-weight: 540;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  transition: gap 180ms var(--ease);
}
.arrowlink:hover {
  gap: 0.75rem;
}

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}