/* Stumpier Pigeon Strings — sps- · A04 soft blue-gray coastal · T07 geometric sans */
@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap");

:root {
  --sps-bg: #e8eef2;
  --sps-bg-2: #d5e0e8;
  --sps-ink: #1c2a33;
  --sps-muted: #4a5c68;
  --sps-accent: #3d6b7a;
  --sps-accent-deep: #2a4f5c;
  --sps-band-a: #cfdce6;
  --sps-band-b: #f4f7f9;
  --sps-band-c: #2f4a56;
  --sps-band-c-ink: #e8eef2;
  --sps-line: rgba(28, 42, 51, 0.14);
  --sps-white: #fafcfd;
  --sps-radius: 2px;
  --sps-font: "Manrope", "Segoe UI", sans-serif;
  --sps-max: 1120px;
  --sps-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sps-font);
  font-weight: 400;
  color: var(--sps-ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d9e6ee 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #c5d5e0 0%, transparent 50%),
    var(--sps-bg);
  line-height: 1.65;
  font-size: 1.05rem;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--sps-accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

.sps-skip {
  position: absolute;
  left: -9999px;
}

.sps-skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  background: var(--sps-white);
  padding: 0.5rem 0.75rem;
}

/* H12 + N21 */
.sps-top {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(232, 238, 242, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sps-line);
}

.sps-top__bar {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sps-brand {
  font-weight: 800;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  letter-spacing: -0.03em;
  color: var(--sps-ink);
  text-decoration: none;
  line-height: 1.15;
}

.sps-brand span {
  display: block;
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sps-muted);
  margin-top: 0.15rem;
}

.sps-menu-btn {
  appearance: none;
  border: 1px solid var(--sps-line);
  background: var(--sps-white);
  color: var(--sps-ink);
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--sps-radius);
}

.sps-menu-btn i {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
}

.sps-chips {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 0 1.25rem 0.85rem;
  display: flex;
  gap: 0.55rem;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.sps-chips a {
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--sps-ink);
  background: var(--sps-white);
  border: 1px solid var(--sps-line);
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  border-radius: 999px;
}

.sps-chips a[aria-current="page"] {
  background: var(--sps-accent);
  color: var(--sps-white);
  border-color: var(--sps-accent);
}

.sps-drawer {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
}

.sps-drawer.is-open {
  pointer-events: auto;
}

.sps-drawer__veil {
  position: absolute;
  inset: 0;
  background: rgba(28, 42, 51, 0.35);
  opacity: 0;
  transition: opacity 0.28s var(--sps-ease);
}

.sps-drawer.is-open .sps-drawer__veil {
  opacity: 1;
}

.sps-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(20rem, 88vw);
  height: 100%;
  background: var(--sps-white);
  padding: 1.5rem;
  transform: translateX(105%);
  transition: transform 0.32s var(--sps-ease);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: -12px 0 40px rgba(28, 42, 51, 0.12);
}

.sps-drawer.is-open .sps-drawer__panel {
  transform: translateX(0);
}

.sps-drawer__panel a {
  text-decoration: none;
  color: var(--sps-ink);
  font-weight: 700;
  font-size: 1.15rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--sps-line);
}

.sps-drawer__close {
  align-self: flex-end;
  margin-bottom: 1rem;
  border: 1px solid var(--sps-line);
  background: transparent;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
}

/* Layout shells */
.sps-wrap {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.sps-main {
  padding-bottom: 3rem;
}

/* Y14 story open */
.sps-story {
  max-width: 42rem;
  margin: 0 auto;
  padding: 3.5rem 1.25rem 2.5rem;
}

.sps-story__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sps-accent);
  margin: 0 0 1rem;
}

.sps-story h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.sps-story p {
  margin: 0 0 1rem;
  color: var(--sps-muted);
  font-size: 1.08rem;
  font-weight: 400;
}

.sps-story__cta {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.sps-btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  background: var(--sps-accent-deep);
  color: var(--sps-white);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
  font-family: inherit;
  border-radius: var(--sps-radius);
}

.sps-btn--ghost {
  background: transparent;
  color: var(--sps-accent-deep);
  border: 1px solid var(--sps-accent);
}

.sps-btn:hover {
  filter: brightness(1.06);
}

/* S16 address micro-band */
.sps-micro {
  border-block: 1px solid var(--sps-line);
  background: rgba(255, 255, 255, 0.45);
  padding: 0.65rem 1.25rem;
  text-align: center;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--sps-muted);
  letter-spacing: 0.01em;
}

.sps-micro a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.sps-micro a:hover {
  border-bottom-color: currentColor;
}

/* L06 timeline */
.sps-timeline {
  padding: 3rem 0 2rem;
}

.sps-timeline h2 {
  max-width: var(--sps-max);
  margin: 0 auto 1.75rem;
  padding: 0 1.25rem;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.sps-steps {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 0 1.25rem;
  list-style: none;
  border-left: 2px solid var(--sps-accent);
  margin-left: 1.25rem;
}

.sps-steps li {
  position: relative;
  padding: 0 0 1.75rem 1.5rem;
}

.sps-steps li::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.35rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--sps-accent);
  box-shadow: 0 0 0 4px var(--sps-bg);
}

.sps-steps strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.sps-steps p {
  margin: 0;
  color: var(--sps-muted);
}

/* scroll-x gallery */
.sps-gallery {
  padding: 1rem 0 2.5rem;
}

.sps-gallery h2 {
  max-width: var(--sps-max);
  margin: 0 auto 1rem;
  padding: 0 1.25rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.sps-rail {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 0.5rem 1.25rem 1.25rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.sps-rail figure {
  margin: 0;
  flex: 0 0 min(78vw, 420px);
  scroll-snap-align: start;
}

.sps-rail img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--sps-radius);
}

.sps-rail figcaption {
  margin-top: 0.45rem;
  font-size: 0.82rem;
  color: var(--sps-muted);
  font-weight: 500;
}

/* C18 alternating bands */
.sps-band {
  padding: 3rem 1.25rem;
}

.sps-band__inner {
  max-width: 40rem;
  margin: 0 auto;
}

.sps-band h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.45rem, 3vw, 1.95rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.sps-band p {
  margin: 0 0 0.85rem;
  color: var(--sps-muted);
}

.sps-band--a {
  background: var(--sps-band-a);
}

.sps-band--b {
  background: var(--sps-band-b);
}

.sps-band--c {
  background: var(--sps-band-c);
  color: var(--sps-band-c-ink);
}

.sps-band--c p {
  color: rgba(232, 238, 242, 0.82);
}

.sps-band--c a {
  color: #b8d4df;
}

.sps-about-home {
  padding: 3rem 1.25rem 2rem;
  max-width: var(--sps-max);
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
}

@media (min-width: 820px) {
  .sps-about-home {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }
}

.sps-about-home h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.sps-about-home p {
  margin: 0 0 0.9rem;
  color: var(--sps-muted);
}

.sps-about-home img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--sps-radius);
}

/* Inner pages */
.sps-page-head {
  padding: 2.75rem 1.25rem 1.5rem;
  max-width: var(--sps-max);
  margin: 0 auto;
}

.sps-page-head h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.sps-page-head p {
  margin: 0;
  max-width: 38rem;
  color: var(--sps-muted);
}

.sps-prose {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 2.5rem;
}

.sps-prose h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sps-prose p,
.sps-prose li {
  color: var(--sps-muted);
}

.sps-prose ul {
  padding-left: 1.2rem;
}

.sps-split {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 1rem 1.25rem 2.5rem;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 860px) {
  .sps-split {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.sps-split img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.sps-list-plain {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sps-list-plain li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--sps-line);
}

.sps-list-plain strong {
  display: block;
  font-weight: 800;
  margin-bottom: 0.25rem;
  color: var(--sps-ink);
}

/* Contact K12 workshop signup */
.sps-contact-grid {
  max-width: var(--sps-max);
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
  display: grid;
  gap: 2rem;
}

@media (min-width: 860px) {
  .sps-contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

.sps-visit h2,
.sps-form h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  font-weight: 800;
}

.sps-visit p {
  margin: 0 0 0.55rem;
  color: var(--sps-muted);
}

.sps-form label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0.85rem 0 0.35rem;
  color: var(--sps-ink);
}

.sps-form input,
.sps-form select,
.sps-form textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--sps-line);
  background: var(--sps-white);
  font-family: inherit;
  font-size: 1rem;
  color: var(--sps-ink);
  border-radius: var(--sps-radius);
}

.sps-form textarea {
  min-height: 8rem;
  resize: vertical;
}

.sps-form .sps-btn {
  margin-top: 1.15rem;
}

.sps-form-ok {
  display: none;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--sps-band-a);
  border: 1px solid var(--sps-line);
  font-weight: 600;
}

.sps-form-ok.is-visible {
  display: block;
}

/* F02 footer */
.sps-foot {
  border-top: 1px solid var(--sps-line);
  background: rgba(255, 255, 255, 0.55);
  padding: 1.35rem 1.25rem 2rem;
}

.sps-foot__ribbon {
  max-width: var(--sps-max);
  margin: 0 auto 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.1rem;
  justify-content: center;
  font-size: 0.86rem;
  font-weight: 600;
}

.sps-foot__ribbon a {
  text-decoration: none;
  color: var(--sps-ink);
}

.sps-foot__ribbon a:hover {
  color: var(--sps-accent);
}

.sps-foot__brand {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--sps-muted);
  letter-spacing: 0.04em;
}

.sps-foot__contact {
  max-width: 36rem;
  margin: 1rem auto 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--sps-muted);
  line-height: 1.55;
}

.sps-foot__contact a {
  color: inherit;
}

/* CB12 soft translucent blur */
.sps-cookie {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 100;
  max-width: 26rem;
  margin: 0 auto;
  padding: 1.1rem 1.15rem;
  background: rgba(250, 252, 253, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(28, 42, 51, 0.12);
  box-shadow: 0 12px 40px rgba(28, 42, 51, 0.12);
  display: none;
  border-radius: 8px;
}

.sps-cookie.is-visible {
  display: block;
}

.sps-cookie p {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  color: var(--sps-muted);
}

.sps-cookie__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.sps-cookie__actions button {
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border-radius: var(--sps-radius);
  border: 1px solid var(--sps-line);
  background: var(--sps-white);
  color: var(--sps-ink);
}

.sps-cookie__actions .sps-cookie-accept {
  background: var(--sps-accent-deep);
  color: var(--sps-white);
  border-color: var(--sps-accent-deep);
}

.sps-cookie-panel {
  display: none;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--sps-line);
  font-size: 0.84rem;
}

.sps-cookie-panel.is-open {
  display: block;
}

.sps-cookie-panel label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.35rem 0;
  color: var(--sps-muted);
}

/* M04 staggered text */
.sps-stagger > * {
  opacity: 0;
  transform: translateY(0.7rem);
  transition: opacity 0.55s var(--sps-ease), transform 0.55s var(--sps-ease);
}

.sps-stagger.is-in > *:nth-child(1) {
  transition-delay: 0.05s;
}
.sps-stagger.is-in > *:nth-child(2) {
  transition-delay: 0.14s;
}
.sps-stagger.is-in > *:nth-child(3) {
  transition-delay: 0.23s;
}
.sps-stagger.is-in > *:nth-child(4) {
  transition-delay: 0.32s;
}
.sps-stagger.is-in > *:nth-child(5) {
  transition-delay: 0.41s;
}

.sps-stagger.is-in > * {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .sps-stagger > *,
  .sps-drawer__panel,
  .sps-drawer__veil {
    transition: none !important;
  }
  .sps-stagger > * {
    opacity: 1;
    transform: none;
  }
}