/* BITS Box landing — classic paper × terminal theme */
:root {
  --paper: #f4efe3;
  --paper-2: #ece5d1;
  --paper-3: #e3dbc4;
  --ink: #1c1811;
  --ink-soft: #6d6450;
  --line: #d6cdb4;
  --accent: #0e7a38;
  --accent-soft: rgba(14, 122, 56, 0.12);
  --warn: #9a6a00;
  --shadow: 5px 5px 0 rgba(28, 24, 17, 0.9);
  --shadow-lg: 9px 9px 0 rgba(28, 24, 17, 0.9);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --cycle: 14s; /* hero app simulation cycle */
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--ink) var(--paper-2);
}
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--paper-2);
  border-left: 1px solid var(--line);
}
::-webkit-scrollbar-thumb {
  background: var(--ink);
  border: 2px solid var(--paper-2);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

/* paper grain */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.8' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.47 0 0 0 0 0.4 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0;
}
h1 {
  font-size: clamp(3rem, 8vw, 6rem);
}
h2 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 2.4rem;
}
em {
  font-family: var(--font-serif);
  font-style: italic;
}
h1 em {
  color: var(--accent);
}
a {
  color: inherit;
  transition: color 0.35s var(--ease-smooth);
}

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.eyebrow::before,
.eyebrow::after {
  content: '';
  width: 2.2rem;
  height: 1px;
  background: var(--ink);
}

/* ---------- scroll progress ---------- */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 60;
  height: 3px;
  width: 100%;
  background: var(--accent);
  transform-origin: 0 50%;
  transform: scaleX(0);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  padding: 0.9rem 1.5rem;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  box-shadow: var(--shadow);
  transition:
    transform 0.45s var(--ease-smooth),
    box-shadow 0.45s var(--ease-smooth),
    background 0.45s var(--ease-smooth);
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}
.btn:active {
  transform: translate(3px, 3px);
  box-shadow: 0 0 0 rgba(28, 24, 17, 0.9);
}
.btn-ghost {
  background: var(--paper);
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--paper-2);
}
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.9);
}
.btn-lg {
  padding: 1.1rem 2.2rem;
  font-size: 1rem;
}
.btn .ic {
  width: 16px;
  height: 16px;
}

/* ---------- icons ---------- */
.ic {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem clamp(1rem, 5vw, 3rem);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--ink);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.35);
}
.nav-links {
  display: flex;
  gap: 1.8rem;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: color 0.2s ease;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1.5px;
  transition:
    color 0.35s var(--ease-smooth),
    background-size 0.45s var(--ease-smooth);
  padding-bottom: 2px;
}
.nav-links a:hover {
  color: var(--ink);
  background-size: 100% 1.5px;
}
@media (max-width: 680px) {
  .nav-links {
    display: none;
  }
}

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
  padding: clamp(6.5rem, 13vh, 9rem) clamp(1rem, 5vw, 3rem) 4rem;
  max-width: 1200px;
  margin: 0 auto;
}
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
}
.lede {
  color: var(--ink-soft);
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  max-width: 48ch;
  margin: 1.6rem 0 2.2rem;
}
.lede strong {
  color: var(--ink);
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 1.4rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.hero-meta::before {
  content: '// ';
  color: var(--accent);
}

.hero-visual {
  display: grid;
  place-items: center;
}

/* ---------- device frame (standard phone mockup) ---------- */
.phone {
  position: relative;
  width: 280px;
  aspect-ratio: 9 / 19;
  background: #141311;
  border-radius: 40px;
  padding: 10px;
  box-shadow:
    0 30px 70px rgba(28, 24, 17, 0.35),
    0 4px 14px rgba(28, 24, 17, 0.2),
    inset 0 0 0 2px rgba(244, 239, 227, 0.08);
  flex-shrink: 0;
}
.appui {
  border-radius: 30px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  font-size: 0.72rem;
  background: var(--paper-2);
}
.hero-phone {
  animation: float 7s ease-in-out infinite;
}
@keyframes float {
  50% {
    transform: translateY(-12px) rotate(-0.6deg);
  }
}

/* ---------- app UI replica (from layout_main.xml) ---------- */
.appbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
}
.appbar b {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.appbar-side {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.appbar-side .ic {
  width: 15px;
  height: 15px;
  opacity: 0.85;
}
.appbar-acts {
  display: flex;
  gap: 0.6rem;
}
.appbar-acts .ic {
  width: 15px;
  height: 15px;
}

.app-body {
  flex: 1;
  background: var(--paper-2);
  padding: 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  overflow: hidden;
}

/* group card (layout_group_item.xml) */
.gcard {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 8px;
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.55);
  overflow: hidden;
}
.gcard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px dashed var(--line);
}
.gcard-head b {
  font-weight: 700;
  font-size: 0.78rem;
}
.gacts {
  display: flex;
  gap: 0.5rem;
  color: var(--ink-soft);
  align-items: center;
}
.gacts .ic {
  width: 13px;
  height: 13px;
}
.gcard-mini .gcard-head {
  border-bottom: 0;
}

.prow {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.7rem;
  border-bottom: 1px solid var(--paper-2);
}
.prow:last-child {
  border-bottom: 0;
}
.pname {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.pname .ic {
  width: 14px;
  height: 14px;
  color: var(--ink-soft);
}
.ptype {
  color: var(--ink-soft);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
}
.pms {
  margin-left: auto;
  font-size: 0.66rem;
  color: var(--ink-soft);
}
.pms.ok {
  color: var(--accent);
  font-weight: 700;
}
.pms.warn {
  color: var(--warn);
  font-weight: 700;
}

/* profile selection (hero cycle) */
.hero-phone .prow-sel {
  animation: prowSel var(--cycle) linear infinite;
}
@keyframes prowSel {
  0%,
  8% {
    background: transparent;
    box-shadow: none;
  }
  13%,
  100% {
    background: var(--accent-soft);
    box-shadow: inset 3px 0 0 var(--accent);
  }
}

/* stats bar (widget StatsBar: ▲ tx | status | ▼ rx) */
.statsbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border-top: 1.5px solid var(--ink);
  background: var(--paper);
  padding-bottom: 0.7rem;
  font-size: 0.62rem;
  color: var(--ink-soft);
}
.st {
  color: var(--ink);
  font-weight: 700;
  text-align: center;
  flex: 1;
}

/* phase stack: <i> elements stacked, swapped by cycle */
.stack {
  display: inline-grid;
}
.stack > * {
  grid-area: 1 / 1;
  font-style: normal;
  white-space: nowrap;
  animation-duration: var(--cycle);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
.phA {
  animation-name: phA;
}
.phB {
  animation-name: phB;
}
.phC {
  animation-name: phC;
}
@keyframes phA {
  0%,
  40% {
    opacity: 1;
  }
  44%,
  96% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes phB {
  0%,
  40% {
    opacity: 0;
  }
  44%,
  60% {
    opacity: 1;
  }
  64%,
  100% {
    opacity: 0;
  }
}
@keyframes phC {
  0%,
  60% {
    opacity: 0;
  }
  64%,
  100% {
    opacity: 1;
  }
}
.stack .phC {
  color: var(--accent);
}

/* flow cycle phases (20s, synced with .screen) */
.stack > .fA,
.stack > .fB,
.stack > .fC {
  animation-duration: 20s;
}
.fA {
  animation-name: fA;
}
.fB {
  animation-name: fB;
}
.fC {
  animation-name: fC;
}
@keyframes fA {
  0%,
  47% {
    opacity: 1;
  }
  51%,
  96% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes fB {
  0%,
  47% {
    opacity: 0;
  }
  51%,
  72% {
    opacity: 1;
  }
  76%,
  100% {
    opacity: 0;
  }
}
@keyframes fC {
  0%,
  72% {
    opacity: 0;
  }
  76%,
  100% {
    opacity: 1;
  }
}
.stack .fC {
  color: var(--accent);
}
.bn-connect .stack .fC {
  color: var(--paper);
}
.bn-flow {
  animation: connectTapF 20s linear infinite;
}
@keyframes connectTapF {
  0%,
  44% {
    box-shadow: 0 5px 12px rgba(28, 24, 17, 0.5);
  }
  47%,
  50% {
    box-shadow:
      0 5px 12px rgba(28, 24, 17, 0.5),
      0 0 0 7px rgba(28, 24, 17, 0.3);
  }
  53%,
  100% {
    box-shadow: 0 5px 12px rgba(28, 24, 17, 0.5);
  }
}
.bn-connect .stack .phC {
  color: var(--paper);
}

/* bottom nav (menu_bottom_nav.xml) — Connect = docked FAB in notch cradle */
.bnav {
  position: relative;
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  background: var(--ink);
  color: var(--paper);
  padding: 0.4rem 0.3rem 0.55rem;
}
.bn-it {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  opacity: 0.55;
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.bn-it i {
  font-style: normal;
}
.bn-it .ic {
  width: 17px;
  height: 17px;
}
.bn-it.on {
  opacity: 1;
}
.bn-connect {
  position: relative;
  width: 48px;
  height: 48px;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-top: -1.7rem;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  border: 1.5px solid var(--paper);
  opacity: 1;
  box-shadow: 0 5px 12px rgba(28, 24, 17, 0.5);
  animation: connectTap var(--cycle) linear infinite;
}
/* cradle: notch bite into the bar, matches statsbar paper bg */
.bn-connect::before {
  content: '';
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  background: var(--paper);
  z-index: -1;
}
.bn-connect .ic {
  width: 21px;
  height: 21px;
}
.bn-connect > i:last-child {
  display: none;
}
@keyframes connectTap {
  0%,
  34% {
    box-shadow: 0 5px 12px rgba(28, 24, 17, 0.5);
  }
  38%,
  42% {
    box-shadow:
      0 5px 12px rgba(28, 24, 17, 0.5),
      0 0 0 7px rgba(28, 24, 17, 0.3);
  }
  46%,
  100% {
    box-shadow: 0 5px 12px rgba(28, 24, 17, 0.5);
  }
}
.spin .ic {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(1turn);
  }
}

/* ---------- marquee ---------- */
.marquee {
  border-block: 1.5px solid var(--ink);
  transition: transform 0.35s ease;
  will-change: transform;
  padding: 0.85rem 0;
  overflow: hidden;
  white-space: nowrap;
  background: var(--paper-2);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: inline-flex;
  animation: marquee 30s linear infinite;
}
.marquee:hover .marquee-track {
  animation-play-state: paused;
}
.mq-group {
  display: inline-flex;
  align-items: center;
  gap: 2.4rem;
  padding-right: 2.4rem;
}
.mq-it {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.4s var(--ease-smooth);
}
.mq-it .ic {
  width: 15px;
  height: 15px;
  color: var(--ink);
}
.marquee:hover .mq-it {
  color: var(--ink);
}
@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- sections ---------- */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(4rem, 10vh, 7rem) clamp(1rem, 5vw, 3rem);
}

/* ---------- feature cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.2rem;
}
.card {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  will-change: transform;
}
/* setelah reveal selesai, transition milik hover (kalahkan .reveal via specificity) */
.card.in {
  transition:
    translate 0.18s ease-out,
    box-shadow 0.18s ease-out;
}
.card.in:hover {
  translate: 0 -4px;
  box-shadow: var(--shadow-lg);
  transition:
    translate 0.45s var(--ease-smooth),
    box-shadow 0.45s var(--ease-smooth);
}
.card-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  background: var(--paper-2);
  margin-bottom: 1rem;
  color: var(--ink);
  transition:
    background 0.4s var(--ease-smooth),
    color 0.4s var(--ease-smooth),
    transform 0.4s var(--ease-smooth);
}
.card:hover .card-icon {
  background: var(--ink);
  color: var(--paper);
  transform: rotate(-6deg);
}
/* stroke draw-in when revealed */
.card .card-icon .ic * {
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  transition: stroke-dashoffset 1.2s ease 0.35s;
}
.card.in .card-icon .ic * {
  stroke-dashoffset: 0;
}
.card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.card p {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

#fitur {
  padding-bottom: 2.5rem;
}

#faq {
  padding-top: 0;
}

#download {
  padding-top: 0;
  padding-bottom: 2.5rem;
}

#protokol {
  padding-top: 0;
  padding-bottom: 2.5rem;
}

#alur {
  padding-top: 0;
  padding-bottom: 2.5rem;
}

/* ---------- usage flow ---------- */
.flow {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}
@media (max-width: 820px) {
  .flow {
    grid-template-columns: 1fr;
    justify-items: center;
  }
}
.flow-steps {
  list-style: none;
  display: grid;
  gap: 1rem;
  counter-reset: step;
}
.step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 8px;
  padding: 1.1rem 1.3rem;
  opacity: 0.4;
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.5);
  animation: stepCycle 20s linear infinite;
  animation-delay: calc((var(--i) - 4) * 5s);
}
.step h3 {
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
}
.step p {
  color: var(--ink-soft);
  font-size: 0.82rem;
}
.step-no {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  border: 1.5px solid var(--ink);
  background: var(--paper-2);
  color: var(--ink);
  transition: background 0.3s ease;
}
.step-no .ic {
  width: 17px;
  height: 17px;
}
@keyframes stepCycle {
  0%,
  22% {
    opacity: 1;
    box-shadow: var(--shadow);
    transform: translateX(6px);
  }
  27%,
  100% {
    opacity: 0.4;
    box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.5);
    transform: none;
  }
}

/* screens cycle inside flow phone (T = 20s) */
.flow-body {
  position: relative;
}
.screen {
  position: absolute;
  inset: 0.55rem;
  opacity: 0;
  animation: screenCycle 20s linear infinite;
  animation-delay: calc((var(--i) - 4) * 5s);
  display: flex;
  flex-direction: column;
}
.screen .gcard {
  flex: 1;
}
@keyframes screenCycle {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  3%,
  22% {
    opacity: 1;
    transform: none;
  }
  25%,
  100% {
    opacity: 0;
    transform: translateY(-12px);
  }
}

/* flow statsbar labels synced to screens */
.fph {
  animation: fphCycle 20s linear infinite;
  animation-delay: calc((var(--i) - 4) * 5s);
  opacity: 0;
}
@keyframes fphCycle {
  0%,
  22% {
    opacity: 1;
  }
  25%,
  100% {
    opacity: 0;
  }
}
.stack > .fph {
  animation-duration: 20s;
}
.stack .fph:last-child {
  color: var(--accent);
}

/* connect screen (flow) */
.center-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  padding: 1rem;
}
.power {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(28, 24, 17, 0.85);
  animation: powerPulse 1.5s ease-in-out infinite;
}
.power i {
  width: 24px;
  height: 24px;
  border: 3px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes powerPulse {
  50% {
    box-shadow:
      4px 4px 0 rgba(28, 24, 17, 0.85),
      0 0 0 10px var(--accent-soft);
  }
}
.pstat {
  font-weight: 700;
  font-size: 0.8rem;
}
.psub {
  color: var(--ink-soft);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
}

/* dashboard waveform (oscilloscope style) */
.wave {
  display: block;
  width: calc(100% - 1.4rem);
  height: 64px;
  margin: 0.3rem 0.7rem 0.2rem;
  overflow: visible;
}
.wave-grid line {
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 3 4;
}
.wv {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: waveScroll 2.8s linear infinite;
}
.wv-d {
  stroke: var(--accent);
}
.wv-u {
  stroke: var(--ink);
  opacity: 0.45;
  animation-duration: 4.2s;
}
@keyframes waveScroll {
  to {
    transform: translateX(-200px);
  }
}

/* big throughput numbers */
.tp {
  display: flex;
  align-items: center;
  padding: 0.7rem 0.7rem 0.2rem;
}
.tp-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}
.tp-v {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  line-height: 1;
}
.tp-v small {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--ink-soft);
}
.tp-v.accent {
  color: var(--accent);
}
.tp-l {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.tp-div {
  width: 1px;
  align-self: stretch;
  background: var(--line);
  margin: 0.2rem 0;
}

/* ---------- protocols ---------- */

.proto-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.proto-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  padding: 0.55rem 1.1rem;
  background: var(--paper);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.55);
  transition:
    transform 0.45s var(--ease-smooth),
    box-shadow 0.45s var(--ease-smooth),
    background 0.45s var(--ease-smooth),
    color 0.45s var(--ease-smooth);
  cursor: default;
}
.proto-list .ic {
  width: 15px;
  height: 15px;
  transition: transform 0.45s var(--ease-smooth);
}
.proto-list li:hover .ic {
  transform: rotate(-8deg) scale(1.15);
}
.proto-list li:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translate(-2px, -2px) rotate(-1.5deg) scale(1.05);
  box-shadow: var(--shadow);
}

/* ---------- CTA ---------- */
.cta-box {
  text-align: center;
  background: var(--paper-2);
  border: 2px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 7px;
  border-radius: 4px;
  padding: clamp(2.5rem, 6vw, 4.5rem) 2rem;
}
.cta-box h2 {
  margin-bottom: 0.8rem;
}
.cta-box p {
  color: var(--ink-soft);
  margin: 0.8rem 0 1.8rem;
}
.cta-note {
  font-size: 0.72rem;
  margin-top: 1.6rem !important;
  letter-spacing: 0.08em;
}

/* ---------- FAQ ---------- */
#faq .eyebrow,
#faq h2 {
  text-align: center;
  justify-content: center;
}
.faq {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  max-width: 920px;
  margin: 0 auto;
}
@media (max-width: 720px) {
  .faq {
    grid-template-columns: 1fr;
  }
}
.faq-card {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 0.8rem;
  display: grid;
  gap: 0.8rem;
  align-content: start;
}
.faq details {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem 1.1rem;
  text-align: left;
  transition:
    border-color 0.4s var(--ease-smooth),
    box-shadow 0.4s var(--ease-smooth);
}
.faq details:hover {
  border-color: var(--ink);
}
.faq details.open {
  border-color: var(--ink);
  box-shadow: 3px 3px 0 rgba(28, 24, 17, 0.4);
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  text-align: left;
}
.faq summary .ch {
  width: 16px;
  height: 16px;
  transition: transform 0.45s var(--ease-smooth);
}
.faq details.open summary .ch {
  transform: rotate(180deg);
}
.faq-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease-smooth);
}
.faq details.open .faq-body {
  grid-template-rows: 1fr;
}
.faq details.closing .faq-body {
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s cubic-bezier(0.5, 0, 0.75, 0);
}
.faq-body p {
  overflow: hidden;
}
.faq details p {
  text-align: left;
  color: var(--ink-soft);
  margin-top: 0.7rem;
  font-size: 0.85rem;
}

/* ---------- footer ---------- */
.footer {
  border-top: 3px double var(--ink);
  padding: 3rem clamp(1rem, 5vw, 3rem) 2rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.9rem;
}
.footer-sub {
  color: var(--ink-soft);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}
.footer-sub a {
  color: var(--accent);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-links a:hover {
  color: var(--ink);
  text-decoration: underline;
}
.footer-links .ic {
  width: 15px;
  height: 15px;
}
.footer-copy a {
  color: var(--accent);
  text-decoration: none;
}
.footer-copy a:hover {
  text-decoration: underline;
}
.footer-copy {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.72rem;
  text-align: center;
}

/* ---------- reveal ---------- */
.reveal {
  opacity: 0;
  translate: 0 24px;
  transition:
    opacity 0.8s ease,
    translate 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: var(--rd, 0ms);
}
.reveal.in {
  opacity: 1;
  translate: 0 0;
}
.d1 {
  --rd: 90ms;
}
.d2 {
  --rd: 180ms;
}
.d3 {
  --rd: 270ms;
}
.d4 {
  --rd: 360ms;
}

/* ---------- parallax (scroll-driven, 2026 browsers) ---------- */
@supports (animation-timeline: scroll()) {
  .hero-visual {
    animation: heroDrift linear both;
    animation-timeline: scroll(root);
    animation-range: 0 75vh;
  }
  @keyframes heroDrift {
    to {
      transform: translateY(60px) scale(0.96);
      opacity: 0.35;
    }
  }
}

/* lenis */
html.lenis,
html.lenis body {
  height: auto;
}
.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .marquee-track,
  .hero-phone,
  .screen,
  .fph,
  .step,
  .power,
  .power i,
  .wv,
  .spin .ic,
  .bn-connect,
  .prow-sel {
    animation: none !important;
  }
  .screen {
    opacity: 0;
  }
  .flow-body .screen:nth-of-type(2) {
    opacity: 1;
  }
  .step {
    opacity: 1;
  }
  .stack .phA,
  .stack .fA,
  .stack .fB {
    opacity: 0 !important;
  }
  .stack .phC,
  .stack .fC {
    opacity: 1 !important;
  }
  .reveal {
    opacity: 1;
    translate: none;
    transition: none;
  }
  .card .card-icon .ic * {
    stroke-dashoffset: 0;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}