:root {
  color-scheme: light dark;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, "Noto Sans SC", sans-serif;
  --font-mono: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, "Noto Sans SC", sans-serif;
  --bg: #f3f3ef;
  --bg-2: #e9e9e4;
  --ink: #111113;
  --ink-soft: #555559;
  --line: #171719;
  --line-soft: rgba(23, 23, 25, 0.18);
  --muted: #717175;
  --panel: rgba(243, 243, 239, 0.72);
  --grid-line: rgba(23, 23, 25, 0.055);
  --diag-line: rgba(23, 23, 25, 0.045);
  --scan-line: rgba(23, 23, 25, 0.035);
  --accent: #1f86a5;
  --accent-strong: #14647f;
  --accent-soft: rgba(31, 134, 165, 0.13);
  --accent-2: #c9821c;
  --accent-2-soft: rgba(201, 130, 28, 0.13);
  --nav-h: 76px;
  --maxw: 1180px;
  --gutter: 24px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #09090b;
    --bg-2: #101013;
    --ink: #f2f2f0;
    --ink-soft: #b9b9bd;
    --line: #f2f2f0;
    --line-soft: rgba(242, 242, 240, 0.16);
    --muted: #85858a;
    --panel: rgba(9, 9, 11, 0.72);
    --grid-line: rgba(242, 242, 240, 0.05);
    --diag-line: rgba(242, 242, 240, 0.04);
    --scan-line: rgba(242, 242, 240, 0.03);
    --accent: #54bfd6;
    --accent-strong: #7fd8e8;
    --accent-soft: rgba(84, 191, 214, 0.16);
    --accent-2: #e8a53d;
    --accent-2-soft: rgba(232, 165, 61, 0.15);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, rgba(0, 0, 0, 0.9), transparent 80%);
  mask-image: radial-gradient(ellipse at 50% 0%, rgba(0, 0, 0, 0.9), transparent 80%);
  animation: grid-drift 24s linear infinite;
}

body.nav-open {
  overflow: hidden;
}

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

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

::selection {
  background: var(--accent);
  color: var(--bg);
}

.container {
  width: min(var(--maxw), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.mono {
  font-family: var(--font-mono);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--nav-h);
  background: var(--panel);
  border-bottom: 1px solid var(--line-soft);
  transition: height 0.35s var(--ease), background-color 0.4s var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), transparent 70%);
  opacity: 0.85;
}

.site-header.is-scrolled {
  height: 64px;
}

.header-inner {
  width: min(var(--maxw), calc(100% - var(--gutter) * 2));
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
}

.brand-mark {
  position: relative;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 2px;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.5s var(--ease), background-color 0.3s var(--ease);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-soft);
  transform: rotate(45deg);
}

.brand-mark span {
  position: relative;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--accent);
  transform: translateY(-1px);
  transition: color 0.3s var(--ease);
}

.brand:hover .brand-mark::before {
  transform: rotate(135deg);
  background: var(--accent);
}

.brand:hover .brand-mark span {
  color: var(--bg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-block: 8px;
  transition: color 0.25s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-dot {
  width: 6px;
  height: 6px;
  border: 1px solid currentColor;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity 0.25s var(--ease), background-color 0.25s var(--ease);
}

.nav-link.is-active .nav-dot,
.nav-link:hover .nav-dot {
  opacity: 1;
}

.nav-link.is-active .nav-dot {
  background: var(--accent);
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-soft);
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(88vh, 820px);
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 48px) 0 64px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(135deg, transparent 0 26px, var(--diag-line) 26px 27px);
  -webkit-mask-image: radial-gradient(ellipse at 36% 42%, #000, transparent 78%);
  mask-image: radial-gradient(ellipse at 36% 42%, #000, transparent 78%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, transparent 0 3px, var(--scan-line) 3px 4px);
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 26px;
}

.hero-tag::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--accent);
}

.hero-tag::after {
  content: "";
  width: 7px;
  height: 7px;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}

.hero-title {
  position: relative;
  font-size: 9rem;
  line-height: 0.9;
  font-weight: 800;
  font-family: var(--font-mono);
  text-transform: uppercase;
  margin: 0 0 18px;
}

.hero-title .stroke {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent);
  margin-right: 0.12em;
}

.hero-title::after {
  content: "";
  position: absolute;
  right: -0.34em;
  top: 0.08em;
  width: 0.24em;
  height: 0.24em;
  border: 2px solid var(--accent-2);
  transform: rotate(45deg);
  animation: spin 9s linear infinite;
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.hero-desc {
  max-width: 520px;
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-meta {
  position: absolute;
  right: 64px;
  bottom: 30px;
  z-index: 2;
  display: flex;
  gap: 20px;
  font-size: 0.72rem;
  color: var(--muted);
}

.hero-meta span::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 7px;
  background: var(--accent);
  transform: rotate(45deg);
  vertical-align: middle;
}

.hero-frame {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-frame span {
  position: absolute;
  width: 26px;
  height: 26px;
  border: 0 solid var(--accent);
}

.hero-frame .tl { top: calc(var(--nav-h) + 26px); left: var(--gutter); border-top-width: 1px; border-left-width: 1px; }
.hero-frame .tr { top: calc(var(--nav-h) + 26px); right: var(--gutter); border-top-width: 1px; border-right-width: 1px; }
.hero-frame .bl { bottom: 26px; left: var(--gutter); border-bottom-width: 1px; border-left-width: 1px; }
.hero-frame .br { bottom: 26px; right: var(--gutter); border-bottom-width: 1px; border-right-width: 1px; }

.hero-frame span::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--line-soft);
}

.hero-frame span::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 3px;
  height: 3px;
  background: var(--accent-2);
  transform: translate(-50%, -50%) rotate(45deg);
}

.hero-scan {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  width: 1px;
  background: linear-gradient(transparent, var(--accent), transparent);
  opacity: 0.22;
  animation: scan 7s var(--ease) infinite;
}

.hero.small {
  min-height: 46vh;
  align-items: flex-end;
  padding-bottom: 54px;
}

.hero.small .hero-title {
  font-size: 5rem;
  margin-bottom: 12px;
}

.hero.small .hero-sub {
  margin-bottom: 6px;
}

/* Marquee */
.marquee {
  position: relative;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
  padding: 14px 0;
  white-space: nowrap;
}

.marquee::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, var(--bg), transparent 12%, transparent 88%, var(--bg));
  z-index: 1;
}

.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 34px;
  animation: marquee 30s linear infinite;
  will-change: transform;
}

.marquee-track span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.marquee-track span:nth-child(4n) {
  color: var(--accent);
}

.marquee-track .diamond {
  width: 7px;
  height: 7px;
  border: 1px solid var(--line);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.marquee-track .diamond:nth-child(4n) {
  border-color: var(--accent-2);
  background: var(--accent-2);
}

/* Section */
.section {
  padding: 96px 0;
  position: relative;
}

.section + .section {
  padding-top: 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 34px;
}

.section-index {
  font-size: 0.78rem;
  color: var(--accent);
}

.section-index::before {
  content: "/// ";
  color: var(--muted);
}

.section-title {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  text-transform: uppercase;
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 12px;
  background: var(--accent);
  transform: rotate(45deg);
  vertical-align: baseline;
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--line-soft);
  align-self: center;
  transform-origin: left;
  animation: line-grow 1.2s var(--ease) both;
  position: relative;
}

.section-line::after {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

main > .section:nth-of-type(even) .section-index {
  color: var(--accent-2);
}

main > .section:nth-of-type(even) .section-line::after {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
}

/* Panel */
.panel {
  position: relative;
  border: 1px solid var(--line-soft);
  padding: clamp(28px, 5vw, 52px);
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  outline: 1px solid var(--line-soft);
  outline-offset: 6px;
  transition: border-color 0.35s var(--ease), outline-color 0.35s var(--ease);
}

.panel::before,
.panel::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 0 solid var(--accent);
  transition: width 0.35s var(--ease), height 0.35s var(--ease);
}

.panel::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.panel::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.panel:hover { border-color: var(--line); outline-color: var(--accent-soft); }
.panel:hover::before,
.panel:hover::after { width: 30px; height: 30px; }

.panel h2,
.panel h3 {
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.panel h2 { font-size: 1.25rem; margin-bottom: 22px; display: flex; align-items: center; gap: 14px; }
.panel h3 { font-size: 1rem; margin-bottom: 12px; }

.panel h2::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--accent);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.panel h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-soft) 0 8px, transparent 8px 16px);
}

.panel p + p { margin-top: 14px; }
.panel p,
.panel li { color: var(--ink-soft); }

.panel ul { list-style: none; margin-top: 14px; }
.panel li { position: relative; padding-left: 22px; margin-top: 8px; }
.panel li::before { content: ""; position: absolute; left: 4px; top: 0.72em; width: 7px; height: 7px; border: 1px solid var(--accent); transform: rotate(45deg); }

/* Grid / projects */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.project {
  position: relative;
  border: 1px solid var(--line-soft);
  padding: 28px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
  overflow: hidden;
}

.project::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.45s var(--ease);
}

.project::after {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -46px;
  width: 120px;
  height: 120px;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity 0.4s var(--ease), transform 0.7s var(--ease);
}

.project:hover {
  border-color: var(--line);
  transform: translateY(-4px);
}

.project:hover::before { width: 100%; }
.project:hover::after { opacity: 0.35; transform: rotate(225deg); }

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.project-index {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
}

.project-mark {
  width: 10px;
  height: 10px;
  border: 1px solid var(--accent-2);
  transform: rotate(45deg);
  transition: background-color 0.35s var(--ease), transform 0.6s var(--ease);
}

.project:hover .project-mark {
  background: var(--accent-2);
  transform: rotate(225deg);
}

.project h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  text-transform: uppercase;
  margin-bottom: 14px;
}

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

.project-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--ink);
}

.project-link span {
  color: var(--accent);
  transition: transform 0.3s var(--ease);
}

.project-link:hover span {
  transform: translateX(6px);
}

/* Buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.btn:hover { color: var(--bg); }
.btn:hover::before { transform: scaleX(1); transform-origin: left; }

.btn .btn-arrow { color: var(--accent); transition: transform 0.3s var(--ease); }
.btn:hover .btn-arrow { color: var(--bg); transform: translateX(5px); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #17130a;
}

.btn-primary::before { background: var(--ink); }
.btn-primary:hover { color: var(--bg); }
.btn-primary .btn-arrow { color: #17130a; }
.btn-primary:hover .btn-arrow { color: var(--bg); }

.btn-ghost { border-color: var(--line-soft); }
.btn-ghost:hover { border-color: var(--accent); }

/* Command list */
.cmd-list {
  display: grid;
  gap: 10px;
}

.cmd {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--line-soft);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.cmd:hover { border-color: var(--line); border-left-color: var(--accent); background: var(--bg-2); }

.cmd code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink);
  min-width: 220px;
  white-space: nowrap;
}

.cmd code::before {
  content: "> ";
  color: var(--accent);
}

.cmd p { margin: 0; font-size: 0.95rem; }

/* Rule grid */
.rule-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.rule-item {
  position: relative;
  border: 1px solid var(--line-soft);
  padding: 14px 16px;
  transition: border-color 0.25s var(--ease);
}

.rule-item:hover { border-color: var(--accent); }

.rule-item .rule-name {
  font-size: 0.92rem;
  color: var(--ink);
  margin-bottom: 8px;
  display: block;
}

.rule-item .rule-name::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--accent-2);
  transform: rotate(45deg);
}

.rule-item code {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  word-break: break-all;
}

.rule-block {
  border-left: 2px solid var(--accent);
  padding-left: 20px;
  margin-top: 18px;
}

.rule-block h3 { margin-bottom: 10px; color: var(--accent); }
.rule-block p { margin: 0; color: var(--ink-soft); }
.rule-block p + p { margin-top: 6px; }

/* Status */
.status-frame {
  position: relative;
  border: 1px solid var(--line-soft);
  padding: 18px;
  display: inline-block;
  max-width: 100%;
}

.status-frame::before,
.status-frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 0 solid var(--accent);
}

.status-frame::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.status-frame::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.status-frame img { width: 100%; min-width: 260px; }

.server-ip {
  display: inline-block;
  margin-top: 14px;
  padding: 12px 18px;
  border: 1px solid var(--accent);
  border-left: 4px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  background: var(--bg-2);
}

.pulse {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.pulse::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
  animation: pulse 1.8s var(--ease) infinite;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line-soft);
  padding: 54px 0 64px;
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}

.footer h3 {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.footer p {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-align: right;
}

.footer-note::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--accent);
  transform: rotate(45deg);
  vertical-align: middle;
}

.footer-inner::after {
  content: "";
  width: 120px;
  height: 16px;
  align-self: center;
  background: repeating-linear-gradient(90deg, var(--line-soft) 0 2px, transparent 2px 5px);
}

/* Reveal */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--d, 0) * 90ms);
}

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

/* Keyframes */
@keyframes grid-drift {
  from { background-position: 0 0; }
  to { background-position: 56px 56px; }
}

@keyframes scan {
  0% { left: 4%; opacity: 0; }
  12% { opacity: 0.22; }
  88% { opacity: 0.22; }
  100% { left: 96%; opacity: 0; }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes line-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: rotate(45deg) scale(1); }
  50% { opacity: 0.25; transform: rotate(45deg) scale(0.7); }
}

@keyframes spin {
  to { transform: rotate(405deg); }
}

/* Responsive */
@media (max-width: 900px) {
  .hero-title { font-size: 6rem; }
  .hero.small .hero-title { font-size: 4rem; }
  .section-title { font-size: 1.8rem; }
  .grid { grid-template-columns: 1fr 1fr; }
  .rule-grid { grid-template-columns: 1fr; }
  .cmd { flex-direction: column; align-items: flex-start; gap: 6px; }
  .cmd code { min-width: 0; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--nav-h);
    height: calc(100vh - var(--nav-h));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 24px var(--gutter);
    background: var(--bg);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    overflow-y: auto;
  }
  body.nav-open .nav { transform: translateX(0); }
  .nav-link {
    padding: 18px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--line-soft);
  }
  .grid { grid-template-columns: 1fr; }
  .hero-meta { display: none; }
  .hero-title { font-size: 4rem; }
  .hero.small .hero-title { font-size: 3rem; }
  .section-title { font-size: 1.5rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-note { text-align: left; }
  .footer-inner::after { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}



/* Diamond lattice */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(45deg, var(--diag-line) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(-45deg, var(--diag-line) 0 1px, transparent 1px 42px);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000, transparent 84%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000, transparent 84%);
  opacity: 0.7;
}
/* Loader */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  background: #141414;
  color: #fff;
  overflow: hidden;
  transition: background-color 0.5s var(--ease);
}

.js .loader {
  display: block;
}

.loader.is-done {
  background: transparent;
  pointer-events: none;
}

.loader.is-done::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0.35;
  transform-origin: left;
  animation: loader-wipe 1.15s cubic-bezier(0.4, 0, 0.2, 1) 0.12s both;
}

.loader.is-done .loader-bg,
.loader.is-done .loader-logo,
.loader.is-done .loader-progress,
.loader.is-done .loader-progress-text {
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.loader-bg {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 44px);
  filter: blur(6px);
}

.loader-logo {
  position: absolute;
  left: 62%;
  top: 44%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  white-space: nowrap;
}

.loader-x {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent);
  margin-right: 0.12em;
}

.loader-progress {
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 100%;
}

.loader-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleY(var(--p, 0));
  transform-origin: top;
}

.loader-progress-text {
  position: absolute;
  left: 50px;
  bottom: 34px;
  color: var(--accent);
}

.loader-core {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.loader-tick {
  width: 6px;
  height: 22px;
  background: var(--accent);
  margin-bottom: 8px;
}

.loader-num {
  display: flex;
  align-items: flex-start;
  line-height: 1;
}

.loader-num #loader-percent {
  font-family: var(--font-mono);
  font-size: 4.5rem;
  font-weight: 700;
}

.loader-symbol {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  margin-left: 6px;
}

.loader-deco {
  display: block;
  margin-top: 12px;
  width: 72px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

@keyframes loader-wipe {
  0% { transform: scaleX(0); opacity: 0; }
  18% { transform: scaleX(0.12); opacity: 0.32; }
  72% { transform: scaleX(1); opacity: 0.32; }
  100% { transform: scaleX(1); opacity: 0; }
}

@media (orientation: portrait) {
  .loader-logo {
    left: 50%;
    top: 34%;
  }
  .loader-progress {
    left: 0;
    top: auto;
    bottom: 88px;
    width: 82%;
    height: 20px;
  }
  .loader-progress-bar {
    transform: scaleX(var(--p, 0));
    transform-origin: left;
  }
  .loader-progress-text {
    left: 0;
    bottom: 124px;
  }
}

.brand .stroke {
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  margin-right: 0.12em;
}

.stroke {
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
  margin-right: 0.12em;
}


.status-builtin {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  min-width: 280px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border: 1px solid var(--muted);
  transform: rotate(45deg);
  flex: 0 0 auto;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.status-builtin.is-online .status-dot {
  background: var(--accent);
  border-color: var(--accent);
  animation: pulse 1.8s var(--ease) infinite;
}

.status-builtin.is-offline .status-dot {
  background: transparent;
  border-color: var(--line);
}

.status-builtin.is-unknown .status-dot {
  background: var(--muted);
  border-color: var(--muted);
}

.status-text {
  display: flex;
  flex-direction: column;
}

.status-state {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.status-meta {
  font-size: 0.72rem;
  color: var(--muted);
}

/* =============================================
   Projection Sharing - Additional Styles
   ============================================= */

/* ----- Auth Forms (Login / Register) ----- */
.auth-forms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.auth-form {
  border: 1px solid var(--line-soft);
  padding: 28px;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}

.auth-form h3 {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  text-transform: uppercase;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-form h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  outline: none;
  transition: border-color 0.25s var(--ease);
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: var(--muted);
}

.form-error {
  color: #c0392b;
  font-size: 0.82rem;
  margin-top: 6px;
  min-height: 1.2em;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 4px;
}

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

/* ----- Status Message (pending / rejected) ----- */
.status-msg {
  text-align: center;
  padding: 48px 24px;
}

.status-msg .status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border: 1px solid var(--line-soft);
  margin-bottom: 24px;
  position: relative;
}

.status-msg .status-icon::before {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}

.status-msg h3 {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.status-msg p {
  color: var(--ink-soft);
  max-width: 480px;
  margin: 0 auto;
}

.status-msg .reject-reason {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  border: 1px solid var(--accent-2);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

/* ----- File Area (approved users) ----- */
.file-area {
  margin-top: 16px;
}

.file-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line-soft);
}

.file-tab {
  padding: 12px 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.file-tab:hover {
  color: var(--ink);
}

.file-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ----- Upload Zone ----- */
.upload-zone {
  border: 1px dashed var(--line-soft);
  padding: 36px 24px;
  text-align: center;
  margin-bottom: 24px;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.upload-zone .upload-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  margin-bottom: 16px;
  position: relative;
}

.upload-zone .upload-icon::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}

.upload-zone p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.upload-zone .upload-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 8px;
  text-transform: none;
}

.upload-zone input[type="file"] {
  display: none;
}

.upload-row {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  align-items: flex-end;
}

.upload-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

.upload-progress {
  display: none;
  margin-top: 16px;
}

.upload-progress.is-active {
  display: block;
}

.upload-progress-bar {
  height: 3px;
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}

.upload-progress-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: var(--up, 0%);
  background: var(--accent);
  transition: width 0.3s var(--ease);
}

.upload-progress-text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 6px;
}

/* ----- File List / Table ----- */
.file-table {
  width: 100%;
  border-collapse: collapse;
}

.file-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
}

.file-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.92rem;
  color: var(--ink-soft);
  vertical-align: middle;
}

.file-table tr:hover td {
  background: var(--bg-2);
}

.file-table .file-name {
  color: var(--ink);
  font-weight: 500;
  word-break: break-all;
}

.file-table .file-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.file-table .file-actions {
  display: flex;
  gap: 8px;
  white-space: nowrap;
}

/* Status badges */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 10px;
  border: 1px solid;
  text-transform: uppercase;
}

.badge-pending {
  color: var(--accent-2);
  border-color: var(--accent-2);
}

.badge-approved {
  color: #27ae60;
  border-color: #27ae60;
}

.badge-rejected {
  color: #c0392b;
  border-color: #c0392b;
}

.badge-disabled {
  color: var(--muted);
  border-color: var(--muted);
}

.badge-hidden {
  color: var(--muted);
  border-color: var(--muted);
}

/* ----- Admin Layout ----- */
.admin-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  min-height: 60vh;
}

.admin-sidebar {
  border: 1px solid var(--line-soft);
  padding: 16px 0;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  height: fit-content;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--ink-soft);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.admin-nav-link:hover {
  color: var(--ink);
  background: var(--bg-2);
}

.admin-nav-link.is-active {
  color: var(--ink);
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
}

.admin-nav-link .nav-count {
  margin-left: auto;
  font-size: 0.68rem;
  color: var(--muted);
  background: var(--bg-2);
  padding: 2px 8px;
  border-radius: 3px;
}

.admin-content {
  min-width: 0;
}

.admin-section {
  display: none;
}

.admin-section.is-active {
  display: block;
}

.admin-section h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-section h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
}

.admin-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.admin-table tr:hover td {
  background: var(--bg-2);
}

.admin-table .actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  border: 1px solid var(--line-soft);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.btn-sm:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm.btn-danger {
  border-color: #c0392b;
  color: #c0392b;
}

.btn-sm.btn-danger:hover {
  background: #c0392b;
  color: #fff;
}

.btn-sm.btn-success {
  border-color: #27ae60;
  color: #27ae60;
}

.btn-sm.btn-success:hover {
  background: #27ae60;
  color: #fff;
}

/* Modal / Reason input */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
}

.modal-overlay.is-active {
  display: flex;
}

.modal-box {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 32px;
  max-width: 420px;
  width: 100%;
  margin: 16px;
}

.modal-box h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.modal-box textarea {
  width: 100%;
  padding: 12px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  outline: none;
  resize: vertical;
  min-height: 80px;
}

.modal-box textarea:focus {
  border-color: var(--accent);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  justify-content: flex-end;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}

.empty-state p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
}

/* Toasts */
.toast-container {
  position: fixed;
  top: calc(var(--nav-h) + 16px);
  right: 16px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 1px solid;
  background: var(--bg);
  animation: toast-in 0.3s var(--ease);
  max-width: 360px;
}

.toast-success {
  border-color: #27ae60;
  color: #27ae60;
}

.toast-error {
  border-color: #c0392b;
  color: #c0392b;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: none; }
}

/* Responsive for projections */
@media (max-width: 720px) {
  .auth-forms {
    grid-template-columns: 1fr;
  }
  .admin-layout {
    grid-template-columns: 1fr;
  }
  .admin-sidebar {
    display: flex;
    overflow-x: auto;
    padding: 0;
    border: none;
    border-bottom: 1px solid var(--line-soft);
  }
  .admin-nav-link {
    white-space: nowrap;
    padding: 12px 16px;
    border-left: none;
    border-bottom: 2px solid transparent;
  }
  .admin-nav-link.is-active {
    border-left: none;
    border-bottom-color: var(--accent);
  }
  .file-table th:nth-child(3),
  .file-table td:nth-child(3) {
    display: none;
  }
  .admin-table th:nth-child(4),
  .admin-table td:nth-child(4) {
    display: none;
  }
  .upload-row {
    flex-direction: column;
  }
  .file-tabs {
    overflow-x: auto;
  }
  .file-tab {
    white-space: nowrap;
  }
}

/* Upload zone - file selected state */
.upload-zone.has-file {
  border-style: solid;
  border-color: var(--accent);
  background: var(--accent-soft);
}
.upload-zone.has-file .upload-icon::before {
  background: var(--accent);
}