/* ============================================================
   333 SOLUTIONS LTD — Design System
   Typefaces: Syne (display), Inter (body), JetBrains Mono (code)
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* ── CSS Custom Properties ────────────────────────────────── */
:root {
  /* Colour */
  --c-bg:        #FAFAF8;
  --c-bg-2:      #F4F3EF;
  --c-bg-3:      #EDECEA;
  --c-surface:   #E8E7E3;
  --c-border:    #E0DFDB;
  --c-border-2:  #CECDC8;
  --c-text:      #0F0F0E;
  --c-text-2:    #2A2A28;
  --c-muted:     #6B6B67;
  --c-label:     #9B9B96;
  --c-green:     #123C2A;
  --c-green-lt:  #1A5038;
  --c-green-dim: rgba(18, 60, 42, 0.08);
  --c-white:     #FFFFFF;

  /* Typography */
  --f-display:   'Syne', sans-serif;
  --f-body:      'Inter', sans-serif;
  --f-mono:      'JetBrains Mono', monospace;

  /* Spacing (4px base) */
  --s-1:   4px;
  --s-2:   8px;
  --s-3:   12px;
  --s-4:   16px;
  --s-5:   24px;
  --s-6:   32px;
  --s-7:   48px;
  --s-8:   64px;
  --s-9:   80px;
  --s-10:  96px;
  --s-11:  120px;
  --s-12:  160px;
  --s-13:  200px;

  /* Layout */
  --max-w:       1280px;
  --max-w-text:  680px;
  --gutter:      24px;
  --section-pad: clamp(64px, 8vw, 120px);

  /* Transitions */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast:      0.18s;
  --t-med:       0.28s;
  --t-slow:      0.45s;

  /* Border radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
}

ul, ol { list-style: none; }

/* ── Loader ───────────────────────────────────────────────── */
#loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--s-3);
  pointer-events: none;
  transition: opacity 0.5s var(--ease-out), visibility 0.5s;
}

#loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader__mark {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 5rem);
  letter-spacing: -0.02em;
  color: var(--c-text);
  animation: loaderMark 0.6s var(--ease-out) forwards;
  opacity: 0;
}

.loader__name {
  font-family: var(--f-mono);
  font-size: clamp(0.6rem, 1.2vw, 0.8rem);
  letter-spacing: 0.3em;
  color: var(--c-muted);
  text-transform: uppercase;
  animation: loaderName 0.5s var(--ease-out) 0.5s forwards;
  opacity: 0;
}

.loader__line {
  width: 40px;
  height: 1px;
  background: var(--c-green);
  transform: scaleX(0);
  transform-origin: left;
  animation: loaderLine 0.5s var(--ease-out) 0.35s forwards;
}

@keyframes loaderMark {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes loaderName {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes loaderLine {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ── Layout Utilities ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

.section {
  padding-block: var(--section-pad);
}

.section--alt {
  background: var(--c-bg-2);
}

.section--dark {
  background: var(--c-text);
  color: var(--c-bg);
}

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  padding-block: 20px;
  transition: padding-block var(--t-med) var(--ease-in-out),
              background var(--t-med) var(--ease-in-out),
              border-color var(--t-med) var(--ease-in-out),
              backdrop-filter var(--t-med) var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  padding-block: 14px;
  background: rgba(250, 250, 248, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--c-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--s-6);
}

.site-header__logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}

.logo__mark {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--c-text);
  line-height: 1;
}

.logo__sep {
  width: 1px;
  height: 14px;
  background: var(--c-border-2);
  display: inline-block;
  margin-inline: 4px;
  vertical-align: middle;
}

.logo__name {
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text);
  line-height: 1;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--s-7);
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--s-6);
}

.site-nav__link {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--c-muted);
  transition: color var(--t-fast) var(--ease-in-out);
  position: relative;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-green);
  transition: width var(--t-med) var(--ease-out);
}

.site-nav__link:hover {
  color: var(--c-text);
}

.site-nav__link:hover::after,
.site-nav__link.active::after {
  width: 100%;
}

.site-nav__link.active {
  color: var(--c-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 10px 22px;
  border-radius: var(--r-sm);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: all var(--t-fast) var(--ease-in-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-green);
  color: var(--c-white);
  border: 1px solid var(--c-green);
}

.btn--primary:hover {
  background: var(--c-green-lt);
  border-color: var(--c-green-lt);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border-2);
}

.btn--outline:hover {
  border-color: var(--c-text);
  background: var(--c-bg-2);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--c-green);
  border: 1px solid transparent;
  padding-inline: 0;
  gap: var(--s-3);
}

.btn--ghost::after {
  content: '→';
  display: inline-block;
  transition: transform var(--t-fast) var(--ease-out);
}

.btn--ghost:hover::after {
  transform: translateX(4px);
}

.btn--ghost:hover {
  color: var(--c-green-lt);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  margin-left: auto;
  cursor: pointer;
}

.nav-toggle__bar {
  width: 22px;
  height: 1.5px;
  background: var(--c-text);
  transition: all var(--t-med) var(--ease-out);
  transform-origin: center;
}

.nav-toggle.open .nav-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle.open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  top: 60px;
  z-index: 800;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  padding: var(--s-8) clamp(20px, 4vw, 48px);
  flex-direction: column;
  gap: var(--s-5);
  transform: translateX(100%);
  transition: transform var(--t-slow) var(--ease-out);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu__link {
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.01em;
  transition: color var(--t-fast);
  border-bottom: 1px solid var(--c-border);
  padding-bottom: var(--s-5);
}

.mobile-menu__link:hover {
  color: var(--c-green);
}

.mobile-menu__cta {
  margin-top: var(--s-5);
}

/* ── Typography ───────────────────────────────────────────── */
.label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-label);
}

.label--green {
  color: var(--c-green);
}

.label--number {
  font-family: var(--f-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
}

.display-1 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--c-text);
}

.display-2 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--c-text);
}

.display-3 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.5vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.heading-1 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.heading-2 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.body-lg {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.7;
  color: var(--c-muted);
  max-width: var(--max-w-text);
}

.body-md {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-muted);
}

.body-sm {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ── Section Headers ──────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  margin-bottom: var(--s-8);
}

.section-header__line {
  width: 32px;
  height: 1px;
  background: var(--c-green);
  flex-shrink: 0;
}

/* ── Thin Rules ───────────────────────────────────────────── */
.rule {
  width: 100%;
  height: 1px;
  background: var(--c-border);
}

.rule--green {
  background: var(--c-green);
  width: 40px;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--c-bg);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-bottom: clamp(60px, 8vw, 100px);
  padding-top: clamp(120px, 15vw, 160px);
}

.hero__label-row {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  margin-bottom: var(--s-7);
}

.hero__tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-label);
  border: 1px solid var(--c-border);
  padding: 4px 10px;
  border-radius: 2px;
}

.hero__tag--green {
  border-color: var(--c-green);
  color: var(--c-green);
}

.hero__headline {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 9vw, 8.5rem);
  line-height: 0.9;
  letter-spacing: -0.035em;
  color: var(--c-text);
  max-width: 900px;
  margin-bottom: var(--s-7);
}

.hero__headline em {
  font-style: normal;
  color: var(--c-green);
}

.hero__sub {
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  line-height: 1.65;
  color: var(--c-muted);
  max-width: 520px;
  margin-bottom: var(--s-8);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 32px;
  right: clamp(20px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-2);
  z-index: 2;
}

.hero__scroll-hint span {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-label);
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-border), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ── Technical Labels (Hero) ──────────────────────────────── */
.tech-labels {
  position: absolute;
  right: clamp(20px, 5vw, 80px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}

.tech-label {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  opacity: 0;
  animation: techLabelIn 0.5s var(--ease-out) forwards;
}

.tech-label:nth-child(1) { animation-delay: 1.0s; }
.tech-label:nth-child(2) { animation-delay: 1.2s; }
.tech-label:nth-child(3) { animation-delay: 1.4s; }

.tech-label__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-green);
  flex-shrink: 0;
}

.tech-label__text {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
  white-space: nowrap;
}

.tech-label__num {
  font-family: var(--f-mono);
  font-size: 0.58rem;
  color: var(--c-label);
  margin-left: 4px;
}

@keyframes techLabelIn {
  from { opacity: 0; transform: translateX(8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ============================================================
   INTRO SECTION
   ============================================================ */
#intro {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--c-border);
  position: relative;
}

.intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-9);
  align-items: start;
}

.intro__quote {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--c-text);
}

.intro__quote em {
  font-style: normal;
  color: var(--c-green);
}

.intro__right {
  padding-top: 8px;
  display: flex;
  flex-direction: column;
  gap: var(--s-6);
}

.intro__number {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(5rem, 12vw, 10rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--c-border);
  user-select: none;
  pointer-events: none;
  position: absolute;
  right: clamp(20px, 4vw, 48px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 0;
}

/* ============================================================
   CAPABILITIES SECTION
   ============================================================ */
#capabilities {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--c-border);
}

.capabilities__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--s-9);
  gap: var(--s-6);
}

.capabilities__list {
  display: flex;
  flex-direction: column;
}

.capability-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: var(--s-6);
  padding-block: var(--s-5);
  border-bottom: 1px solid var(--c-border);
  cursor: default;
  transition: background var(--t-fast);
  position: relative;
  overflow: hidden;
}

.capability-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-green);
  transform: scaleY(0);
  transition: transform var(--t-med) var(--ease-out);
}

.capability-item:first-child {
  border-top: 1px solid var(--c-border);
}

.capability-item:hover {
  background: var(--c-bg-2);
}

.capability-item:hover::before {
  transform: scaleY(1);
}

.capability-item__num {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--c-label);
  letter-spacing: 0.1em;
}

.capability-item__name {
  font-family: var(--f-display);
  font-size: clamp(1.2rem, 2.5vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-text);
  transition: color var(--t-fast);
}

.capability-item:hover .capability-item__name {
  color: var(--c-text);
}

.capability-item__annotation {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--c-label);
  text-transform: uppercase;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity var(--t-med), transform var(--t-med) var(--ease-out);
}

.capability-item:hover .capability-item__annotation {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
#services {
  padding-block: var(--section-pad);
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
}

.services__header {
  margin-bottom: var(--s-9);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
}

.service-card {
  background: var(--c-bg-2);
  padding: var(--s-7) var(--s-6);
  position: relative;
  overflow: hidden;
  cursor: default;
  transition: background var(--t-med) var(--ease-out);
}

.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--c-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease-out);
}

.service-card:hover {
  background: var(--c-bg);
}

.service-card:hover::after {
  transform: scaleX(1);
}

.service-card--featured {
  background: var(--c-bg);
}

.service-card__num {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--c-label);
  margin-bottom: var(--s-4);
  display: block;
}

.service-card__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.2vw, 1.65rem);
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--c-text);
  margin-bottom: var(--s-4);
  transition: color var(--t-fast);
}

.service-card--featured .service-card__title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
}

.service-card__desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--c-muted);
  max-width: 360px;
}

.service-card__indicator {
  position: absolute;
  top: var(--s-7);
  right: var(--s-6);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border-2);
  transition: background var(--t-fast), border-color var(--t-fast);
}

.service-card:hover .service-card__indicator {
  background: var(--c-green);
  border-color: var(--c-green);
}

/* ============================================================
   HOW WE WORK SECTION
   ============================================================ */
#process {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--c-border);
}

.process__header {
  margin-bottom: var(--s-10);
}

.process__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-6);
}

.process__connector {
  position: absolute;
  top: 20px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 1px;
  background: var(--c-border);
  z-index: 0;
}

.process__connector-fill {
  height: 100%;
  width: 0%;
  background: var(--c-green);
  transition: width 1.2s var(--ease-out);
}

.process__connector-fill.animate {
  width: 100%;
}

.process-step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--s-4);
}

.process-step__dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--t-med), background var(--t-med);
  flex-shrink: 0;
}

.process-step__dot-inner {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-border-2);
  transition: background var(--t-med);
}

.process-step.in-view .process-step__dot {
  border-color: var(--c-green);
}

.process-step.in-view .process-step__dot-inner {
  background: var(--c-green);
}

.process-step__num {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--c-label);
}

.process-step__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  color: var(--c-text);
}

.process-step__desc {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ============================================================
   SOFTWARE + SYSTEMS SECTION
   ============================================================ */
#software {
  padding-block: var(--section-pad);
  background: var(--c-text);
  border-top: 1px solid var(--c-border);
  color: var(--c-bg);
  overflow: hidden;
}

.software__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
}

.software__content {
  display: flex;
  flex-direction: column;
  gap: var(--s-6);
}

.software__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-bg);
}

.software__title em {
  font-style: normal;
  color: rgba(18, 60, 42, 0.6);
}

.software__body {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(250, 250, 248, 0.6);
  max-width: 400px;
}

.software__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

.tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 2px;
  border: 1px solid rgba(250, 250, 248, 0.15);
  color: rgba(250, 250, 248, 0.5);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.tag:hover {
  border-color: var(--c-green);
  color: rgba(250, 250, 248, 0.85);
}

/* System diagram */
.system-diagram {
  position: relative;
  height: 380px;
}

/* ============================================================
   NETWORK SECTION
   ============================================================ */
#network {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--c-border);
  overflow: hidden;
}

.network__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(48px, 6vw, 96px);
  align-items: center;
}

.network__diagram {
  position: relative;
  height: 360px;
  order: -1;
}

/* ============================================================
   WHY 333 SECTION
   ============================================================ */
#why {
  padding-block: var(--section-pad);
  background: var(--c-bg-2);
  border-top: 1px solid var(--c-border);
}

.why__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-9);
}

.why__left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--s-5);
}

.why__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--c-text);
}

.why__title span {
  display: block;
}

.why__subtitle {
  font-size: 0.95rem;
  color: var(--c-muted);
  max-width: 340px;
  line-height: 1.7;
}

.why__principles {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding-top: var(--s-4);
}

.principle {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  padding: var(--s-6);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-med);
}

.principle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-green);
  transform: scaleY(0);
  transition: transform var(--t-med) var(--ease-out);
}

.principle:hover {
  border-color: var(--c-border-2);
}

.principle:hover::before {
  transform: scaleY(1);
}

.principle__label {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--c-green);
  text-transform: uppercase;
}

.principle__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.principle__desc {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
#about {
  padding-block: var(--section-pad);
  border-top: 1px solid var(--c-border);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-9);
  align-items: start;
}

.about__label {
  margin-bottom: var(--s-5);
}

.about__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-text);
  margin-bottom: var(--s-6);
}

.about__body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 480px;
}

.about__info-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--c-border);
  background: var(--c-bg-2);
}

.info-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--s-4);
  align-items: start;
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--c-border);
}

.info-row:last-child {
  border-bottom: none;
}

.info-row__key {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-label);
  padding-top: 2px;
}

.info-row__val {
  font-size: 0.88rem;
  color: var(--c-text-2);
  line-height: 1.55;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
#contact {
  padding-block: var(--section-pad);
  background: var(--c-text);
  color: var(--c-bg);
  border-top: 1px solid var(--c-border);
  overflow: hidden;
  position: relative;
}

.contact__bg-333 {
  position: absolute;
  right: -2%;
  bottom: -10%;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(10rem, 30vw, 28rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(255,255,255,0.03);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.contact__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-9);
  align-items: start;
}

.contact__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--c-bg);
  margin-bottom: var(--s-6);
}

.contact__sub {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(250, 250, 248, 0.55);
  max-width: 380px;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--s-6);
  padding-top: var(--s-4);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}

.contact-item__label {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(250, 250, 248, 0.35);
}

.contact-item__value {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(0.95rem, 2vw, 1.4rem);
  letter-spacing: -0.01em;
  color: var(--c-bg);
  transition: color var(--t-fast);
}

.contact-item__value:hover {
  color: rgba(250, 250, 248, 0.7);
}

.contact-item__value--address {
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(250, 250, 248, 0.65);
}

.contact-item__value--address:hover {
  color: rgba(250, 250, 248, 0.65);
}

.contact__divider {
  width: 100%;
  height: 1px;
  background: rgba(250, 250, 248, 0.08);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-text);
  color: var(--c-bg);
  padding-top: var(--s-10);
  padding-bottom: var(--s-7);
  border-top: 1px solid rgba(250, 250, 248, 0.08);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--s-8);
  padding-bottom: var(--s-9);
  border-bottom: 1px solid rgba(250, 250, 248, 0.08);
  margin-bottom: var(--s-7);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}

.footer__logo {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--c-bg);
}

.footer__tagline {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(250, 250, 248, 0.35);
  text-transform: uppercase;
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  margin-top: var(--s-3);
}

.footer__contact-item {
  font-size: 0.82rem;
  color: rgba(250, 250, 248, 0.5);
  transition: color var(--t-fast);
}

.footer__contact-item:hover {
  color: var(--c-bg);
}

.footer__col-title {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(250, 250, 248, 0.3);
  margin-bottom: var(--s-4);
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

.footer__nav-link {
  font-size: 0.85rem;
  color: rgba(250, 250, 248, 0.5);
  transition: color var(--t-fast);
}

.footer__nav-link:hover {
  color: var(--c-bg);
}

.footer__bottom {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s-5);
  flex-wrap: wrap;
}

.footer__legal {
  font-size: 0.78rem;
  color: rgba(250, 250, 248, 0.3);
  line-height: 1.6;
}

.footer__copyright {
  font-size: 0.78rem;
  color: rgba(250, 250, 248, 0.3);
  text-align: right;
}

/* ============================================================
   ANIMATIONS (SCROLL REVEAL)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal-left.in-view {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal-right.in-view {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   PAGE HERO (INNER PAGES)
   ============================================================ */
.page-hero {
  padding-top: clamp(120px, 16vw, 180px);
  padding-bottom: var(--section-pad);
  border-bottom: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}

.page-hero__label {
  margin-bottom: var(--s-5);
}

.page-hero__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--c-text);
  margin-bottom: var(--s-6);
}

.page-hero__sub {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.65;
  color: var(--c-muted);
  max-width: 540px;
}

.page-hero__333 {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(8rem, 22vw, 18rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--c-border);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-page__story {
  padding-block: var(--section-pad);
  border-bottom: 1px solid var(--c-border);
}

.about-page__story-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--s-9);
  align-items: start;
}

.about-page__values {
  padding-block: var(--section-pad);
  background: var(--c-bg-2);
  border-bottom: 1px solid var(--c-border);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-5);
  margin-top: var(--s-9);
}

.value-item {
  padding: var(--s-6);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  position: relative;
  overflow: hidden;
}

.value-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--c-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease-out);
}

.value-item:hover::before {
  transform: scaleX(1);
}

.value-item__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.value-item__desc {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ============================================================
   SERVICES PAGE
   ============================================================ */
.services-page__list {
  padding-block: var(--section-pad);
}

.service-detail {
  display: grid;
  grid-template-columns: 80px 1fr 1fr;
  gap: var(--s-8);
  align-items: start;
  padding-block: var(--s-8);
  border-bottom: 1px solid var(--c-border);
  position: relative;
}

.service-detail:first-child {
  border-top: 1px solid var(--c-border);
}

.service-detail__num {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--c-border);
  transition: color var(--t-med);
}

.service-detail:hover .service-detail__num {
  color: var(--c-border-2);
}

.service-detail__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--c-text);
}

.service-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-4);
}

.service-detail__tag {
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--c-border);
  color: var(--c-label);
}

.service-detail__desc {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-page__main {
  padding-block: var(--section-pad);
}

.contact-page__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--s-10);
  align-items: start;
}

.contact-page__cta-label {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-label);
  margin-bottom: var(--s-5);
}

.contact-page__title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--c-text);
  margin-bottom: var(--s-7);
}

.contact-page__email-link {
  display: block;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.5vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--c-green);
  margin-bottom: var(--s-4);
  transition: color var(--t-fast);
}

.contact-page__email-link:hover {
  color: var(--c-green-lt);
}

.contact-page__phone-link {
  display: block;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(1rem, 2vw, 1.5rem);
  letter-spacing: -0.01em;
  color: var(--c-text-2);
  transition: color var(--t-fast);
}

.contact-page__phone-link:hover {
  color: var(--c-green);
}

.contact-page__info {
  display: flex;
  flex-direction: column;
  gap: var(--s-7);
  padding-top: var(--s-4);
}

.contact-page__info-group {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

.contact-page__info-label {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-label);
}

.contact-page__info-val {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-text-2);
}

/* ============================================================
   LEGAL PAGES (Privacy / Terms)
   ============================================================ */
.legal-page__content {
  padding-block: var(--section-pad);
  max-width: 760px;
}

.legal-page__content h2 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--c-text);
  margin-top: var(--s-8);
  margin-bottom: var(--s-4);
}

.legal-page__content h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--c-text);
  margin-top: var(--s-5);
  margin-bottom: var(--s-3);
}

.legal-page__content p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-muted);
  margin-bottom: var(--s-4);
}

.legal-page__content ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  margin-bottom: var(--s-5);
}

.legal-page__content ul li {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--c-muted);
  padding-left: var(--s-5);
  position: relative;
}

.legal-page__content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--c-green);
}

.legal-page__content a {
  color: var(--c-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-page__content a:hover {
  color: var(--c-green-lt);
}

/* ============================================================
   FOCUS STATES (Accessibility)
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--s-7);
  }

  .intro__inner {
    grid-template-columns: 1fr;
    gap: var(--s-7);
  }

  .intro__number {
    position: static;
    transform: none;
    font-size: clamp(4rem, 15vw, 8rem);
  }

  .software__inner,
  .network__inner {
    grid-template-columns: 1fr;
    gap: var(--s-8);
  }

  .network__diagram {
    order: 1;
  }

  .service-detail {
    grid-template-columns: 60px 1fr;
    gap: var(--s-5);
  }

  .service-detail__desc {
    grid-column: 2;
  }
}

@media (max-width: 768px) {
  .site-nav__links,
  .site-nav > .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero__headline {
    font-size: clamp(2.5rem, 12vw, 5rem);
  }

  .tech-labels {
    display: none;
  }

  .capabilities__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .capability-item {
    grid-template-columns: 36px 1fr;
  }

  .capability-item__annotation {
    display: none;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

  .process__track {
    grid-template-columns: 1fr;
    gap: var(--s-7);
  }

  .process__connector {
    display: none;
  }

  .why__inner {
    grid-template-columns: 1fr;
  }

  .about__inner,
  .contact__inner,
  .contact-page__inner {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--s-3);
  }

  .footer__copyright {
    text-align: left;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .about-page__story-inner {
    grid-template-columns: 1fr;
  }

  .service-detail {
    grid-template-columns: 1fr;
    gap: var(--s-4);
  }

  .service-detail__desc {
    grid-column: 1;
  }

  .page-hero__333 {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn--ghost {
    width: auto;
    justify-content: flex-start;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
  }

  .tech-label {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   ADDITIONAL POLISH
   ============================================================ */

/* Text selection */
::selection {
  background: rgba(18, 60, 42, 0.15);
  color: var(--c-text);
}

/* Custom scrollbar (webkit) */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-muted); }

/* Skip to content link */
.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 9999;
  background: var(--c-green);
  color: var(--c-white);
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

/* Horizontal rule */
hr {
  border: none;
  border-top: 1px solid var(--c-border);
  margin-block: var(--s-7);
}

/* Software section needs its own padding */
#software { padding-block: var(--section-pad); }

/* Body overflow until loader done */
body:not(.loaded) { overflow: hidden; }

/* Hero fade-in on load */
body.loaded .hero__content {
  animation: heroIn 0.8s var(--ease-out) 0.2s both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Service detail hover */
.service-detail {
  transition: background var(--t-med) var(--ease-out);
  padding-inline: var(--s-4);
  margin-inline: calc(-1 * var(--s-4));
}
.service-detail:hover { background: var(--c-bg-2); }

@media (prefers-reduced-motion: reduce) {
  body.loaded .hero__content { animation: none; }
}