:root {
  --ink: #1a1c21;
  --paper: #f1f3f0;
  --surface: #ffffff;
  --coral: #db454f;
  --teal: #00a19c;
  --teal-ink: #00716e;
  --gold: #de9e2e;
  --muted: #686a6e;
  --line: #d7dad5;
  --radius: 12px;
  --max: 1160px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 12%, rgb(222 158 46 / 12%), transparent 25rem),
    var(--paper);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 5px;
}

.site-header,
footer {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  min-height: 88px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 112px;
  height: auto;
}

nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

nav a:hover { color: var(--ink); }

.site-header nav {
  display: flex;
  gap: 26px;
  align-items: center;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: 4px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.06em;
}

.language-switch a { font-size: inherit; }

.language-current { color: var(--ink); }

.language-divider {
  color: var(--line);
  font-weight: 500;
}

main,
.legal-main {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.hero {
  min-height: 690px;
  padding: 115px 0 95px;
}

.personal-hero {
  display: block;
}

.personal-hero > div { max-width: 1080px; }

.eyebrow {
  margin: 0 0 16px;
  color: var(--coral);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  max-width: 900px;
  margin-bottom: 28px;
  font-size: clamp(3.8rem, 9vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: -0.075em;
}

h1 span { color: var(--teal); }

.hero-copy {
  max-width: 720px;
  margin-bottom: 36px;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 26px;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(48px, 10vw, 135px);
  padding: 95px 0 110px;
  border-top: 1px solid var(--line);
}

.about-content { max-width: 720px; }

.about-lead {
  color: var(--ink);
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  line-height: 1.45;
  letter-spacing: -0.025em;
}

.about-content > p:not(.about-lead) { color: var(--muted); }

.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 32px;
}

.topic-list span {
  padding: 7px 11px;
  color: #4e5053;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 700;
}

.about-principles {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
  margin-top: 15px;
}

.about-principles article {
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}

.about-principles article > span {
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.about-principles h3 {
  margin: 18px 0 10px;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.about-principles p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  min-height: 52px;
  padding: 10px 20px;
  color: white;
  background: var(--ink);
  border-radius: 9px;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  color: var(--ink);
  background: var(--teal);
  transform: translateY(-2px);
}

.projects {
  padding: 84px 0 110px;
  border-top: 1px solid var(--line);
}

.projects-intro {
  max-width: 670px;
  margin: -18px 0 42px;
  color: var(--muted);
  font-size: 1.05rem;
}

.project-list {
  display: grid;
  gap: 34px;
}

.section-heading h2 {
  margin-bottom: 36px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.project-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 470px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.project-visual {
  position: relative;
  min-height: 370px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--coral), var(--teal) 62%, var(--gold));
}

.project-visual::before,
.project-visual::after {
  position: absolute;
  content: "";
  border: 1px solid rgb(255 255 255 / 32%);
  border-radius: 50%;
}

.project-visual::before { inset: 12% 8%; }
.project-visual::after { inset: 26% -20%; }

.schuhdemenz-visual {
  display: grid;
  place-items: center;
  padding: clamp(34px, 6vw, 72px);
  background:
    radial-gradient(circle at 50% 42%, rgb(219 69 79 / 20%), transparent 48%),
    #e8e3dc;
}

.schuhdemenz-visual::before,
.schuhdemenz-visual::after { display: none; }

.denkarium-visual,
.memoriae-visual {
  display: grid;
  place-items: center;
  padding: clamp(34px, 6vw, 72px);
  background:
    radial-gradient(circle at 50% 42%, rgb(222 158 46 / 35%), transparent 45%),
    #06382f;
}

.denkarium-visual::before,
.denkarium-visual::after,
.memoriae-visual::before,
.memoriae-visual::after { display: none; }

.schuhdemenz-visual img,
.denkarium-visual img,
.memoriae-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: min(100%, 330px);
  height: auto;
  border-radius: 22%;
  box-shadow: 0 28px 70px rgb(0 19 15 / 45%);
}

.project-card--denkarium .project-content,
.project-card--memoriae .project-content {
  background:
    linear-gradient(135deg, rgb(222 158 46 / 8%), transparent 55%),
    var(--surface);
}

.shoe {
  position: absolute;
  z-index: 1;
  display: grid;
  width: 145px;
  height: 70px;
  place-items: center;
  color: rgb(255 255 255 / 92%);
  background: rgb(26 28 33 / 80%);
  border-radius: 52% 44% 32% 20%;
  font-size: 2.4rem;
  font-weight: 200;
  box-shadow: 0 18px 50px rgb(26 28 33 / 20%);
  transform: rotate(-16deg);
}

.shoe-one { top: 18%; left: 15%; }
.shoe-two { right: 12%; bottom: 18%; transform: rotate(16deg); }
.shoe-three { right: 19%; top: 28%; width: 90px; height: 44px; opacity: 0.54; }

.project-content {
  align-self: center;
  padding: clamp(32px, 6vw, 72px);
}

.meta {
  display: flex;
  gap: 8px;
  margin-bottom: 26px;
}

.meta span {
  padding: 4px 9px;
  color: var(--muted);
  background: var(--paper);
  border-radius: 5px;
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-content h3 {
  margin-bottom: 20px;
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.project-content p {
  margin-bottom: 28px;
  color: var(--muted);
}

.text-link {
  color: var(--teal-ink);
  font-weight: 760;
  text-decoration-thickness: 2px;
}

.project-links,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.secondary-link { color: var(--muted); }

footer {
  min-height: 110px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.84rem;
}

footer p { margin: 0; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

.support-main {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.support-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: clamp(48px, 8vw, 110px);
  align-items: end;
  min-height: 650px;
  padding: 105px 0 90px;
}

.support-hero h1 {
  margin-bottom: 30px;
  font-size: clamp(3.3rem, 7vw, 6.6rem);
}

.support-lead {
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.support-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 24px;
  margin-top: 34px;
}

.support-card {
  padding: 28px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
}

.support-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: rgb(255 255 255 / 72%);
  font-size: 0.9rem;
}

.app-support-card {
  display: grid;
  gap: 22px;
}

.app-support-card img {
  display: block;
  width: 112px;
  height: 112px;
  border-radius: 24px;
  box-shadow: 0 14px 36px rgb(0 0 0 / 28%);
}

.denkarium-feature-section,
.memoriae-feature-section,
.timeline-section {
  padding: 90px 0 105px;
  border-top: 1px solid var(--line);
}

.denkarium-feature-section .about-principles,
.memoriae-feature-section .about-principles {
  margin-top: 48px;
}

.timeline-list {
  position: relative;
  display: grid;
  gap: 0;
  max-width: 900px;
  margin-top: 48px;
  padding-left: 38px;
}

.timeline-list::before {
  position: absolute;
  top: 9px;
  bottom: 9px;
  left: 8px;
  width: 2px;
  content: "";
  background: var(--line);
}

.timeline-entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(125px, 0.28fr) minmax(0, 1fr);
  gap: 28px;
  padding: 0 0 34px;
}

.timeline-entry:last-child { padding-bottom: 0; }

.timeline-entry::before {
  position: absolute;
  top: 7px;
  left: -37px;
  width: 12px;
  height: 12px;
  content: "";
  background: var(--teal);
  border: 3px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--teal);
}

.timeline-date {
  color: var(--teal-ink);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.timeline-content h3 {
  margin-bottom: 7px;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}

.timeline-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.screens-section,
.faq-section {
  padding: 90px 0 105px;
  border-top: 1px solid var(--line);
}

.screens-section .section-heading,
.faq-section .section-heading { margin-bottom: 44px; }

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2.3vw, 28px);
}

.screenshot-grid figure { margin: 0; }

.phone-shot {
  overflow: hidden;
  padding: 7px;
  background: var(--ink);
  border-radius: 34px;
  box-shadow: 0 24px 60px rgb(26 28 33 / 13%);
}

.phone-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 28px;
}

.screenshot-grid figcaption {
  display: grid;
  gap: 4px;
  padding: 18px 5px 0;
}

.screenshot-grid figcaption strong {
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.screenshot-grid figcaption span {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.faq-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(50px, 10vw, 130px);
  align-items: start;
}

.faq-list { border-top: 1px solid var(--line); }

.faq-list details { border-bottom: 1px solid var(--line); }

.faq-list summary {
  padding: 24px 38px 24px 0;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.faq-list details p {
  max-width: 680px;
  padding: 0 24px 24px 0;
  color: var(--muted);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
  margin: 20px 0 110px;
  padding: clamp(30px, 5vw, 58px);
  color: white;
  background: var(--teal);
  border-radius: var(--radius);
}

.contact-panel .eyebrow { color: #063a39; }

.contact-panel h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.contact-panel p:not(.eyebrow) {
  max-width: 680px;
  margin-bottom: 0;
  color: rgb(26 28 33 / 76%);
}

.contact-panel .button { background: white; color: var(--ink); }

.idea-invite {
  display: grid;
  grid-template-columns: minmax(250px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(44px, 8vw, 110px);
  align-items: start;
  margin: 0 0 110px;
  padding: clamp(36px, 7vw, 78px);
  color: white;
  background:
    radial-gradient(circle at 9% 88%, rgb(0 161 156 / 32%), transparent 22rem),
    var(--ink);
  border-radius: var(--radius);
}

.idea-invite .eyebrow { color: #56d2cd; }

.idea-invite h2 {
  margin-bottom: 0;
  font-size: clamp(2.5rem, 5vw, 4.7rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.idea-invite-copy > p {
  max-width: 680px;
  color: rgb(255 255 255 / 72%);
  font-size: 1.12rem;
}

.idea-exchange {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 32px;
}

.idea-exchange span {
  padding: 7px 11px;
  color: rgb(255 255 255 / 82%);
  border: 1px solid rgb(255 255 255 / 18%);
  border-radius: 7px;
  font-size: 0.76rem;
  font-weight: 750;
}

.button-light { color: var(--ink); background: white; }
.button-light:hover { background: var(--teal); }
.idea-mail-link { color: #80ddd9; }

.idea-main {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.idea-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(285px, 0.55fr);
  gap: clamp(50px, 8vw, 110px);
  align-items: center;
  min-height: 690px;
  padding: 100px 0 90px;
}

.idea-hero h1 {
  margin-bottom: 30px;
  font-size: clamp(3.3rem, 7vw, 6.5rem);
}

.idea-promise {
  padding: 30px;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: 0 26px 70px rgb(26 28 33 / 13%);
}

.idea-promise > p:not(.summary-title) {
  color: rgb(255 255 255 / 68%);
  font-size: 0.92rem;
}

.idea-promise dl { margin: 22px 0 0; }

.idea-promise dl div {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid rgb(255 255 255 / 12%);
}

.idea-promise dt {
  color: rgb(255 255 255 / 52%);
  font-size: 0.78rem;
}

.idea-promise dd {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 750;
  text-align: right;
}

.idea-process-section,
.idea-exchange-section,
.idea-terms-section {
  padding: 90px 0 105px;
  border-top: 1px solid var(--line);
}

.idea-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.idea-steps article,
.terms-list article {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.idea-steps article > span {
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.idea-steps h3,
.terms-list h3 {
  margin: 18px 0 9px;
  font-size: 1.15rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.idea-steps p,
.terms-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.exchange-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}

.exchange-grid article {
  padding: clamp(30px, 5vw, 54px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.exchange-grid article:last-child {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.exchange-label {
  margin-bottom: 14px;
  color: var(--teal-ink);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.exchange-grid article:last-child .exchange-label { color: #56d2cd; }

.exchange-grid h3 {
  margin-bottom: 24px;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.exchange-grid ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.exchange-grid article:last-child ul { color: rgb(255 255 255 / 70%); }
.exchange-grid li + li { margin-top: 10px; }

.terms-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.terms-list h3 { margin-top: 0; }

.terms-note {
  max-width: 860px;
  margin: 28px 0 0;
  padding: 24px 26px;
  color: #4f5155;
  background: #fff6e1;
  border: 1px solid #eed49d;
  border-radius: var(--radius);
}

.idea-mail-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 44px;
  align-items: center;
  margin: 15px 0 110px;
  padding: clamp(32px, 6vw, 64px);
  color: white;
  background: var(--teal);
  border-radius: var(--radius);
}

.idea-mail-section .eyebrow { color: #063a39; }

.idea-mail-section h2 {
  margin-bottom: 14px;
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.idea-mail-section p:not(.eyebrow) {
  max-width: 720px;
  color: rgb(26 28 33 / 76%);
}

.idea-mail-section .privacy-hint {
  margin-bottom: 0;
  font-size: 0.8rem;
}

.idea-mail-section .button { color: var(--ink); background: white; }

.build-note {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(48px, 10vw, 135px);
  align-items: start;
  padding: 95px 0 110px;
  border-top: 1px solid var(--line);
}

.build-note h2 {
  margin-bottom: 0;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.build-note > div:last-child > p:first-child {
  max-width: 650px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 1.15rem;
}

.last-built {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.legal-main { padding-bottom: 100px; }

.legal-hero {
  max-width: 900px;
  padding: 105px 0 70px;
}

.legal-hero h1 {
  margin-bottom: 28px;
  font-size: clamp(3rem, 7vw, 6.1rem);
}

.legal-intro {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
}

.updated {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.legal-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 720px);
  gap: clamp(42px, 8vw, 110px);
  align-items: start;
}

.legal-summary {
  position: sticky;
  top: 24px;
  padding: 24px;
  background: var(--ink);
  border-radius: var(--radius);
  color: white;
}

.summary-title {
  margin-bottom: 12px;
  font-weight: 800;
}

.legal-summary ul {
  margin: 0;
  padding-left: 1.2rem;
  color: rgb(255 255 255 / 72%);
  font-size: 0.88rem;
}

.legal-copy section {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}

.legal-copy section:first-child { border-top: 0; }

.legal-copy h2 {
  margin-bottom: 18px;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.legal-copy p,
.legal-copy address {
  color: #4f5155;
  font-style: normal;
}

.legal-copy p:last-child { margin-bottom: 0; }

mark {
  padding: 0.08em 0.25em;
  color: #5c410c;
  background: #ffe3a8;
}

.legal-copy .notice {
  margin-top: 24px;
  padding: 26px;
  background: #fff6e1;
  border: 1px solid #eed49d;
  border-radius: var(--radius);
}

@media (max-width: 760px) {
  .site-header,
  footer,
  main,
  .legal-main,
  .support-main,
  .idea-main { width: min(calc(100% - 28px), var(--max)); }

  .site-header { min-height: 76px; }
  .site-header nav { gap: 14px; }
  .language-switch { gap: 5px; margin-left: 0; }
  .nav-about,
  .nav-contact { display: none; }
  .hero { min-height: 540px; padding-top: 80px; }
  h1 { font-size: clamp(3.4rem, 17vw, 5rem); }
  .personal-hero h1 { font-size: clamp(3.05rem, 14vw, 4.8rem); }
  .about-section { grid-template-columns: 1fr; gap: 24px; padding-block: 72px; }
  .about-principles { grid-template-columns: 1fr; margin-top: 22px; }
  .projects { padding-block: 64px; }
  .project-card { grid-template-columns: 1fr; }
  .project-visual { min-height: 310px; }
  .project-list { gap: 24px; }
  .legal-hero { padding-top: 76px; }
  .legal-hero h1 {
    font-size: clamp(2.2rem, 10vw, 3rem);
    overflow-wrap: anywhere;
  }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-summary { position: static; }
  .support-hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 76px 0 70px;
  }
  .support-hero h1 { font-size: clamp(3.1rem, 15vw, 4.8rem); }
  .screenshot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phone-shot { padding: 5px; border-radius: 24px; }
  .phone-shot img { border-radius: 20px; }
  .faq-section { grid-template-columns: 1fr; gap: 18px; }
  .timeline-entry { grid-template-columns: 1fr; gap: 5px; }
  .contact-panel { grid-template-columns: 1fr; }
  .idea-invite { grid-template-columns: 1fr; gap: 28px; margin-bottom: 72px; }
  .idea-hero { grid-template-columns: 1fr; min-height: auto; padding: 76px 0 70px; }
  .idea-hero h1 { font-size: clamp(3rem, 14vw, 4.7rem); }
  .idea-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exchange-grid,
  .terms-list,
  .idea-mail-section { grid-template-columns: 1fr; }
  .build-note { grid-template-columns: 1fr; gap: 30px; padding-block: 72px; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 4px; }
}

@media (max-width: 420px) {
  .brand-logo { width: 104px; }
  .nav-idea { display: none; }
  .idea-steps { grid-template-columns: 1fr; }
  .screenshot-grid { grid-template-columns: 1fr; gap: 38px; }
  .phone-shot { max-width: 300px; margin-inline: auto; }
  .screenshot-grid figcaption { max-width: 300px; margin-inline: auto; }
}

@media (max-width: 340px) {
  .nav-contact { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}