/* SOISA — Professional collaborative brand system */
:root {
  --ink: #132628;
  --ink-soft: #3d5557;
  --teal: #0f5c5e;
  --teal-deep: #0a3c3e;
  --teal-mid: #1a7578;
  --mist: #e8f1f0;
  --cream: #f7faf9;
  --paper: #ffffff;
  --accent: #b87333;
  --accent-soft: rgba(184, 115, 51, 0.12);
  --line: rgba(15, 92, 94, 0.14);
  --shadow: 0 24px 60px rgba(10, 60, 62, 0.12);
  --radius: 4px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Figtree", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(26, 117, 120, 0.08), transparent 60%),
    radial-gradient(900px 500px at 100% 20%, rgba(184, 115, 51, 0.06), transparent 55%),
    var(--cream);
  -webkit-font-smoothing: antialiased;
  hyphens: none;
  -webkit-hyphens: none;
  word-break: normal;
  overflow-wrap: break-word;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.page-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), backdrop-filter 0.35s;
}

.site-header.is-scrolled {
  background: rgba(247, 250, 249, 0.9);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header.is-scrolled .logo-text,
.site-header.is-scrolled .nav a {
  color: var(--ink);
}

.site-header.is-scrolled .nav a:hover {
  color: var(--teal);
}

.site-header.is-scrolled .menu-toggle span {
  background: var(--ink);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  z-index: 2;
}

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background:
    conic-gradient(from 210deg, var(--teal-deep), var(--teal-mid), var(--accent), var(--teal-deep));
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.35);
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  background: rgba(247, 250, 249, 0.95);
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: #fff;
  transition: color 0.3s;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.25s;
}

.nav a:hover {
  color: #fff;
}

.nav-cta {
  padding: 0.55rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  transition: background 0.25s, border-color 0.25s, color 0.25s !important;
}

.site-header.is-scrolled .nav-cta {
  border-color: var(--teal);
  color: var(--teal) !important;
}

.site-header.is-scrolled .nav-cta:hover {
  background: var(--teal);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 2;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 6px auto;
  background: #fff;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.menu-toggle.is-open span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle.is-open span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: hero-zoom 18s var(--ease) infinite alternate;
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 40, 42, 0.45) 0%, rgba(10, 60, 62, 0.55) 40%, rgba(8, 36, 38, 0.88) 100%),
    linear-gradient(90deg, rgba(10, 40, 42, 0.55) 0%, transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-h) + 4rem) 0 7rem;
  max-width: 720px;
  margin-left: max(calc((100% - 1120px) / 2), 1.25rem);
  margin-right: auto;
  width: min(720px, calc(100% - 2.5rem));
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 6.5rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 0.95;
  margin: 0 0 1.25rem;
  text-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  font-weight: 500;
  line-height: 1.3;
  margin: 0 0 1rem;
  max-width: 22ch;
  color: rgba(255, 255, 255, 0.96);
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 42ch;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.scroll-cue {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.scroll-cue::after {
  content: "";
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.7), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.45rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 28px rgba(184, 115, 51, 0.28);
}

.btn-primary:hover {
  background: #c7833a;
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-full {
  width: 100%;
}

/* Sections */
.section {
  padding: clamp(4.5rem, 9vw, 7rem) 0;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-mid);
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.65rem);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--teal-deep);
  letter-spacing: -0.01em;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0 0 0.6rem;
  color: var(--teal-deep);
}

.section-head {
  max-width: 640px;
  margin-bottom: 3rem;
}

.section-lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  margin-bottom: 3.5rem;
}

.about-intro h2 {
  max-width: 14ch;
}

.about-copy p {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
}

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

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 600;
  color: var(--teal);
  margin-bottom: 0.35rem;
}

.stat-label {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Pillars */
.pillars {
  background:
    linear-gradient(180deg, rgba(232, 241, 240, 0.65), rgba(247, 250, 249, 0.2));
}

.pillar-list {
  display: flex;
  flex-direction: column;
}

.pillar {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  transition: padding-left 0.35s var(--ease);
}

.pillar:last-child {
  border-bottom: 1px solid var(--line);
}

.pillar:hover {
  padding-left: 0.6rem;
}

.pillar-index {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 600;
  padding-top: 0.15rem;
}

.pillar-body p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 62ch;
}

/* Approach */
.approach {
  position: relative;
  color: #fff;
  overflow: hidden;
}

.approach-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(26, 117, 120, 0.45), transparent 50%),
    radial-gradient(ellipse at 90% 80%, rgba(184, 115, 51, 0.2), transparent 45%),
    linear-gradient(145deg, #0a3c3e 0%, #0f5c5e 55%, #0a3234 100%);
}

.approach .container {
  position: relative;
  z-index: 1;
}

.approach .eyebrow {
  color: rgba(255, 220, 180, 0.85);
}

.approach h2 {
  color: #fff;
  max-width: 16ch;
}

.approach-intro p {
  color: rgba(255, 255, 255, 0.78);
  max-width: 40ch;
}

.approach-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center;
}

.approach-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.approach-points li {
  padding: 1.15rem 1.25rem;
  border-left: 2px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
}

.approach-points strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.3rem;
}

.approach-points span {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.98rem;
}

/* Collaborate */
.collab-visual {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
}

.collab-network {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
  position: relative;
}

.network-hub {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 1.4rem 1.25rem;
  text-align: center;
  background: linear-gradient(145deg, var(--teal) 0%, var(--teal-deep) 100%);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(10, 60, 62, 0.22);
  position: relative;
  overflow: hidden;
}

.network-hub::before,
.network-hub::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.network-hub::before {
  top: -40px;
  right: -30px;
}

.network-hub::after {
  bottom: -50px;
  left: -20px;
}

.hub-label {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1;
}

.hub-sub {
  position: relative;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.78);
}

.network-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(10, 60, 62, 0.06);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s;
}

.network-item:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 92, 94, 0.28);
  box-shadow: 0 16px 36px rgba(10, 60, 62, 0.1);
}

.network-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  margin-bottom: 0.25rem;
}

.network-item strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--teal-deep);
}

.network-item span:not(.network-dot) {
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-soft);
}

.collab-copy h3 {
  margin-bottom: 0.85rem;
}

.collab-copy p {
  color: var(--ink-soft);
  margin: 0 0 1rem;
}

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

/* Join */
.join {
  padding-bottom: clamp(5rem, 10vw, 8rem);
}

.join-panel {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  background:
    linear-gradient(135deg, rgba(232, 241, 240, 0.9), rgba(255, 255, 255, 0.95)),
    var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.join-copy h2 {
  max-width: 12ch;
}

.join-copy p {
  color: var(--ink-soft);
  margin: 0;
}

.join-form {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--teal-deep);
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--teal-mid);
  box-shadow: 0 0 0 3px rgba(26, 117, 120, 0.15);
}

.field input.is-invalid,
.field textarea.is-invalid {
  border-color: #b33a3a;
}

.form-note {
  min-height: 1.4em;
  margin: 0;
  font-size: 0.92rem;
  color: var(--teal);
}

.form-note.is-error {
  color: #b33a3a;
}

/* Footer */
.site-footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
  background: rgba(232, 241, 240, 0.45);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-brand strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  display: block;
}

.footer-brand p {
  margin: 0.15rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.footer-credit {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@keyframes hero-zoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.12); }
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.35; transform: scaleY(0.85); }
  50% { opacity: 1; transform: scaleY(1); }
}


/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .approach-layout,
  .collab-visual,
  .join-panel {
    grid-template-columns: 1fr;
  }

  .collab-network {
    max-width: 560px;
    width: 100%;
    margin-inline: auto;
  }

  .stat-row {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .hero-content {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    inset: 0;
    background: rgba(10, 60, 62, 0.97);
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .nav a {
    color: #fff;
    font-size: 1.25rem;
  }

  .nav-cta {
    border-color: rgba(255, 255, 255, 0.4);
  }

  .pillar {
    grid-template-columns: 3rem 1fr;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-content {
    padding-bottom: 5.5rem;
  }

  .network-hub {
    padding: 1.2rem 1rem;
  }

  .hub-label {
    font-size: 1.4rem;
  }

  .network-item {
    padding: 1.1rem 1rem;
  }

  .network-item strong {
    font-size: 1.05rem;
  }

  .network-item span:not(.network-dot) {
    font-size: 0.88rem;
  }
}

@media (max-width: 520px) {
  .collab-network {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal,
  .hero-image,
  .scroll-cue::after,
  .btn,
  .network-item {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}