:root {
  --black:   #080706;
  --ink:     #0f0e0c;
  --ink-2:   #1a1916;
  --ink-3:   #2e2c28;
  --ink-4:   #4a4740;
  --amber:   #d4a843;
  --amber-l: #e8c070;
  --amber-d: #a07820;
  --amber-bg:#1e1a10;
  --red:     #c0392b;
  --red-bg:  #1a0e0c;
  --teal:    #1e7a6a;
  --teal-l:  #27a68e;
  --teal-bg: #0a1814;
  --white:   #f2ede6;
  --white-2: #d4cec4;
  --white-3: #8a857c;
  --line:    rgba(242,237,230,0.08);
  --line-2:  rgba(242,237,230,0.15);
  --serif:   'Noto Serif TC', serif;
  --sans:    'Noto Sans TC', sans-serif;
  --mono:    'IBM Plex Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--ink-4); border-radius: 2px; }

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
}

/* ── NAVBAR ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw;
  background: rgba(8,7,6,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
}
.nav-logo img { height: 32px; width: auto; }
.nav-logo-text {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.04em;
}
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a {
  color: var(--white-3);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }
.nav-links .nav-cta {
  background: var(--amber);
  color: var(--black) !important;
  padding: 7px 16px;
  border-radius: 3px;
  font-weight: 700 !important;
  font-size: 0.78rem !important;
  transition: background 0.2s !important;
}
.nav-links .nav-cta:hover { background: var(--amber-l) !important; }
.nav-links .nav-login {
  border: 1px solid var(--line-2);
  color: var(--white-2) !important;
  padding: 6px 14px;
  border-radius: 3px;
  font-size: 0.75rem !important;
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  padding: 120px 5vw 80px;
  position: relative;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-bg-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.hero-amber-glow {
  position: absolute;
  top: -20%; left: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(212,168,67,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 760px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--amber);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
}
.hero-eyebrow::before {
  content: '';
  width: 32px; height: 1px;
  background: var(--amber);
}

.hero-h1 {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 8px;
  opacity: 0;
  animation: fadeUp 0.7s 0.25s forwards;
}
.hero-h1 em {
  font-style: normal;
  color: var(--amber);
  position: relative;
  display: inline-block;
}
.hero-h1 .strike {
  position: relative;
  color: var(--white-3);
}
.hero-h1 .strike::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 3px;
  background: var(--red);
  transform: rotate(-1deg);
}

.hero-h2-sub {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  font-weight: 600;
  color: var(--white-2);
  line-height: 1.3;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s forwards;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--white-3);
  line-height: 1.85;
  max-width: 480px;
  margin-bottom: 44px;
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.6s 0.55s forwards;
}

.hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap; align-items: center;
  margin-bottom: 60px;
  opacity: 0;
  animation: fadeUp 0.6s 0.65s forwards;
}
.btn-amber {
  background: var(--amber);
  color: var(--black);
  padding: 13px 28px;
  border-radius: 3px;
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background 0.2s, transform 0.15s;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-amber:hover { background: var(--amber-l); transform: translateY(-1px); }
.btn-ghost-white {
  border: 1px solid var(--line-2);
  color: var(--white-2);
  padding: 12px 24px;
  border-radius: 3px;
  font-size: 0.85rem;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost-white:hover { border-color: var(--white-2); color: var(--white); }

.hero-tags {
  display: flex; flex-wrap: wrap; gap: 12px;
  opacity: 0;
  animation: fadeUp 0.6s 0.75s forwards;
}
.hero-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--teal-l);
  letter-spacing: 0.06em;
  display: flex; align-items: center; gap: 6px;
}
.hero-tag::before { content: '✓'; color: var(--teal-l); }

/* Contrast block */
.contrast-strip {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 0;
  margin: 0 5vw;
  border: 1px solid var(--line);
  overflow: hidden;
}
.contrast-bad {
  background: var(--red-bg);
  padding: 40px 36px;
  border-right: 1px solid var(--line);
}
.contrast-vs {
  display: flex; align-items: center; justify-content: center;
  padding: 0 28px;
  background: var(--ink-2);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--white-3);
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  white-space: nowrap;
}
.contrast-good {
  background: var(--teal-bg);
  padding: 40px 36px;
}
.contrast-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 500;
}
.contrast-bad .contrast-label { color: var(--red); }
.contrast-good .contrast-label { color: var(--teal-l); }
.contrast-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.contrast-bad .contrast-title { color: var(--white-2); }
.contrast-good .contrast-title { color: var(--white); }
.contrast-items { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.contrast-items li {
  font-size: 0.82rem;
  font-weight: 300;
  line-height: 1.6;
  display: flex; align-items: flex-start; gap: 8px;
}
.contrast-bad .contrast-items li { color: rgba(242,237,230,0.5); }
.contrast-good .contrast-items li { color: rgba(242,237,230,0.75); }
.contrast-items li::before { flex-shrink: 0; margin-top: 2px; font-size: 0.7rem; }
.contrast-bad .contrast-items li::before { content: '✕'; color: var(--red); }
.contrast-good .contrast-items li::before { content: '✓'; color: var(--teal-l); }
.contrast-result {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.78rem;
}
.contrast-bad .contrast-result { color: rgba(192,57,43,0.7); }
.contrast-good .contrast-result { color: var(--teal-l); }
.contrast-result strong { font-size: 1rem; }

/* ── SECTION SCAFFOLD ── */
section { position: relative; }
.s-inner { padding: 100px 5vw; }
.s-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 12px;
}
.s-label::before {
  content: '';
  width: 28px; height: 1px;
  background: var(--amber);
}
.s-h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.s-h2 em { font-style: normal; color: var(--amber); }
.s-lead {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--white-3);
  max-width: 520px;
  margin-bottom: 64px;
  font-weight: 300;
}

/* ── OS SECTION ── */
#os { background: var(--ink); border-top: 1px solid var(--line); }
.os-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 48px;
}
.os-card {
  background: var(--ink-2);
  padding: 40px 36px;
  transition: background 0.2s;
}
.os-card:hover { background: var(--ink-3); }
.os-num {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--amber);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  display: block;
}
.os-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  display: block;
  line-height: 1;
}
.os-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}
.os-sub {
  font-size: 0.78rem;
  color: var(--amber);
  font-family: var(--mono);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.os-text {
  font-size: 0.84rem;
  color: var(--white-3);
  line-height: 1.8;
  font-weight: 300;
}
.os-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  overflow: hidden;
}
.os-stat {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
  text-align: center;
}
.os-stat:last-child { border-right: none; }
.os-stat-num {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 500;
  color: var(--amber);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}
.os-stat-label {
  font-size: 0.72rem;
  color: var(--white-3);
  font-weight: 300;
  letter-spacing: 0.04em;
}

/* ── FIREWALL (三道防線) ── */
#firewall { background: var(--black); border-top: 1px solid var(--line); }
.firewall-stack { display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.firewall-row {
  background: var(--ink);
  display: grid;
  grid-template-columns: 60px 1fr 1fr;
  gap: 0;
  transition: background 0.2s;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.firewall-row:last-child { border-bottom: none; }
.firewall-row::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--amber);
  opacity: 0;
  transition: opacity 0.2s;
}
.firewall-row:hover { background: var(--ink-2); }
.firewall-row:hover::before { opacity: 1; }
.firewall-num {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ink-4);
  border-right: 1px solid var(--line);
  min-height: 160px;
  transition: color 0.2s;
}
.firewall-row:hover .firewall-num { color: var(--amber); }
.firewall-main {
  padding: 36px 32px;
  border-right: 1px solid var(--line);
}
.firewall-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.firewall-title {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}
.firewall-desc {
  font-size: 0.82rem;
  color: var(--white-3);
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 14px;
}
.firewall-link {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--amber);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.2s;
  display: inline-flex; align-items: center; gap: 6px;
}
.firewall-link:hover { color: var(--amber-l); }
.firewall-items {
  padding: 36px 32px;
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
}
.firewall-item {
  font-size: 0.8rem;
  color: var(--white-3);
  font-weight: 300;
  line-height: 1.6;
  padding-left: 16px;
  position: relative;
}
.firewall-item::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--amber-d);
  font-size: 0.7rem;
}

/* ── WHY SECTION ── */
#why { background: var(--ink); border-top: 1px solid var(--line); }
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 56px;
}
.why-card {
  background: var(--ink-2);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  transition: background 0.2s;
}
.why-card:hover { background: var(--ink-3); }
.why-card-x {
  font-family: var(--mono);
  font-size: 1.8rem;
  color: rgba(192,57,43,0.2);
  font-weight: 500;
  position: absolute;
  top: 20px; right: 20px;
  line-height: 1;
  transition: color 0.2s;
}
.why-card:hover .why-card-x { color: rgba(192,57,43,0.4); }
.why-icon { font-size: 1.4rem; margin-bottom: 14px; display: block; }
.why-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}
.why-text {
  font-size: 0.8rem;
  color: var(--white-3);
  line-height: 1.75;
  font-weight: 300;
}
.why-conclusion {
  border: 1px solid rgba(192,57,43,0.2);
  background: var(--red-bg);
  padding: 28px 32px;
  text-align: center;
}
.why-conclusion p {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white-2);
  line-height: 1.5;
}
.why-conclusion em { font-style: normal; color: var(--red); }

/* ── FOUNDER ── */
#founder { background: var(--black); border-top: 1px solid var(--line); }
.founder-grid { display: grid; grid-template-columns: 0.5fr 1.2fr; gap: 60px; align-items: end; }
.founder-img-wrap {
  position: relative;
}
.founder-img-wrap::before {
  content: '';
  position: absolute;
  inset: -12px;
  border: 1px solid var(--line-2);
  pointer-events: none;
}
.founder-img-wrap::after {
  content: '';
  position: absolute;
  top: -6px; left: -6px;
  width: 48px; height: 48px;
  border-top: 2px solid var(--amber);
  border-left: 2px solid var(--amber);
}
.founder-img {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  object-position: top center;
  display: block;
  filter: grayscale(30%);
}
.founder-cert {
  position: absolute;
  bottom: -20px; right: -20px;
  background: var(--amber-bg);
  border: 1px solid rgba(212,168,67,0.3);
  padding: 14px 18px;
}
.founder-cert p {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--amber);
  letter-spacing: 0.06em;
  line-height: 1.6;
}
.founder-right {}
.founder-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.founder-name {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 4px;
}
.founder-name-en {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--white-3);
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}
blockquote {
  border-left: 3px solid var(--amber);
  padding: 0 0 0 24px;
  margin-bottom: 32px;
}
blockquote p {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--white-2);
  line-height: 1.75;
  font-style: italic;
}
.founder-body {
  font-size: 0.88rem;
  color: var(--white-3);
  line-height: 1.9;
  font-weight: 300;
  margin-bottom: 28px;
}
.founder-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.founder-stat {
  background: var(--ink-2);
  padding: 16px 14px;
  text-align: center;
}
.founder-stat-num {
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--amber);
  display: block;
  line-height: 1;
  margin-bottom: 4px;
}
.founder-stat-label {
  font-size: 0.68rem;
  color: var(--white-3);
  font-weight: 300;
  letter-spacing: 0.03em;
}

/* ── COMPARE TABLE ── */
#compare { background: var(--ink); border-top: 1px solid var(--line); }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
}
.compare-table th, .compare-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.85rem;
}
.compare-table th {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-3);
  background: var(--ink-2);
  font-weight: 500;
}
.compare-table th.col-good {
  color: var(--amber);
  background: var(--amber-bg);
}
.compare-table td { color: var(--white-3); font-weight: 300; }
.compare-table td.col-bad { color: rgba(242,237,230,0.35); }
.compare-table td.col-bad span { color: var(--red); margin-right: 6px; }
.compare-table td.col-good { color: var(--white); font-weight: 400; }
.compare-table td.col-good span { color: var(--teal-l); margin-right: 6px; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: var(--ink-2); }

/* ── PRODUCTS ── */
#products { background: var(--black); border-top: 1px solid var(--line); }
.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.product-card {
  border: 1px solid var(--line);
  padding: 40px 36px;
  position: relative;
  transition: border-color 0.2s;
}
.product-card:hover { border-color: var(--line-2); }
.product-status {
  position: absolute; top: 20px; right: 20px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid;
}
.status-soon { color: var(--amber); border-color: rgba(212,168,67,0.3); background: var(--amber-bg); }
.status-plan { color: var(--white-3); border-color: var(--line); }
.product-icon { font-size: 1.8rem; margin-bottom: 16px; display: block; }
.product-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
}
.product-text {
  font-size: 0.82rem;
  color: var(--white-3);
  line-height: 1.8;
  font-weight: 300;
  margin-bottom: 20px;
}
.product-stores { display: flex; gap: 10px; }
.store-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--white-3);
  border: 1px solid var(--line);
  padding: 5px 12px;
  border-radius: 2px;
  display: inline-flex; align-items: center; gap: 5px;
}

/* ── RULES ── */
#rules { background: var(--ink); border-top: 1px solid var(--line); }
.rules-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.rule-card {
  background: var(--ink-2);
  padding: 32px 28px;
  text-decoration: none;
  display: block;
  transition: background 0.2s;
  position: relative; overflow: hidden;
}
.rule-card:hover { background: var(--ink-3); }
.rule-card::after {
  content: '→';
  position: absolute; bottom: 20px; right: 24px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--amber);
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  transform: translateX(-4px);
}
.rule-card:hover::after { opacity: 1; transform: translateX(0); }
.rule-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--amber);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  display: block;
}
.rule-title {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
  line-height: 1.4;
}
.rule-text {
  font-size: 0.78rem;
  color: var(--white-3);
  line-height: 1.75;
  font-weight: 300;
}

/* ── KNOWLEDGE ── */
#knowledge { background: var(--black); border-top: 1px solid var(--line); }
.knowledge-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.knowledge-card {
  background: var(--ink);
  text-decoration: none;
  display: block;
  padding: 32px 28px;
  transition: background 0.2s;
}
.knowledge-card:hover { background: var(--ink-2); }
.k-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}
.k-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 8px;
}
.k-desc {
  font-size: 0.78rem;
  color: var(--white-3);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 14px;
}
.k-read {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--amber);
  letter-spacing: 0.06em;
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap 0.2s;
}
.knowledge-card:hover .k-read { gap: 10px; }

/* ── PRICING ── */
#pricing { background: var(--ink); border-top: 1px solid var(--line); }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 760px; }
.pricing-card {
  border: 1px solid var(--line);
  padding: 44px 40px;
  position: relative;
  transition: border-color 0.2s;
}
.pricing-card.featured { border-color: rgba(212,168,67,0.4); }
.pricing-card.featured::before {
  content: 'RECOMMENDED';
  position: absolute; top: -11px; left: 40px;
  background: var(--amber);
  color: var(--black);
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 10px;
}
.pricing-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}
.pricing-desc {
  font-size: 0.75rem;
  color: var(--white-3);
  font-weight: 300;
  margin-bottom: 24px;
}
.pricing-num {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 500;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 4px;
}
.pricing-unit {
  font-size: 0.75rem;
  color: var(--white-3);
  font-weight: 300;
  margin-bottom: 24px;
}
.pricing-items {
  list-style: none;
  margin-bottom: 32px;
  display: flex; flex-direction: column; gap: 8px;
}
.pricing-items li {
  font-size: 0.8rem;
  color: var(--white-3);
  font-weight: 300;
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}
.pricing-items li::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--amber-d);
  font-size: 0.7rem;
}

/* ── CONTACT ── */
#contact { background: var(--black); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; align-items: start; }
.contact-channels { display: flex; flex-direction: column; gap: 0; }
.channel {
  display: flex; align-items: flex-start; gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.channel:last-child { border-bottom: none; }
.channel-icon {
  width: 36px; height: 36px;
  border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  font-family: var(--mono);
  color: var(--amber);
}
.channel-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--white-3);
  margin-bottom: 4px;
  text-transform: uppercase;
}
.channel-value {
  font-size: 0.9rem;
  color: var(--white);
  font-weight: 400;
  text-decoration: none;
  transition: color 0.2s;
}
.channel-value:hover { color: var(--amber); }
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.form-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--white-3);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--ink-2);
  border: 1px solid var(--line-2);
  padding: 11px 14px;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--white);
  transition: border-color 0.2s;
  outline: none;
  border-radius: 0;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--amber); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--white-3); }
.form-select { color: var(--white-3); }
.form-select option { background: var(--ink-2); }
.form-textarea { resize: vertical; min-height: 90px; }
.checkbox-row { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-label { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--white-3); cursor: pointer; }
.checkbox-label input { accent-color: var(--amber); }
.form-submit {
  background: var(--amber);
  color: var(--black);
  border: none;
  padding: 13px 28px;
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
  align-self: flex-start;
  letter-spacing: 0.02em;
  border-radius: 0;
}
.form-submit:hover { background: var(--amber-l); }

/* ── CTA STRIP ── */
.cta-strip {
  padding: 80px 5vw;
  background: var(--amber-bg);
  border-top: 1px solid rgba(212,168,67,0.2);
  border-bottom: 1px solid rgba(212,168,67,0.2);
  text-align: center;
}
.cta-strip h2 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.3;
}
.cta-strip p {
  font-size: 0.9rem;
  color: var(--white-3);
  font-weight: 300;
  margin-bottom: 36px;
}
.cta-strip-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── FOOTER ── */
footer {
  background: var(--black);
  padding: 60px 5vw 32px;
  border-top: 1px solid var(--line);
}
.footer-top {
  display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.footer-brand { }
.footer-logo-text {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--amber);
  margin-bottom: 10px;
}
.footer-tagline {
  font-size: 0.75rem;
  color: var(--white-3);
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 16px;
}
.footer-cert {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--amber-d);
  letter-spacing: 0.04em;
  line-height: 1.7;
}
.footer-col-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--white-3);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-links a {
  font-size: 0.78rem;
  color: var(--ink-4);
  text-decoration: none;
  font-weight: 300;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white-2); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-copy {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-4);
  letter-spacing: 0.04em;
}

/* ── FLOAT CTA ── */
.float-cta {
  position: fixed; bottom: 24px; right: 24px; z-index: 99;
  display: flex; flex-direction: column; gap: 8px; align-items: flex-end;
}
.float-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s;
  letter-spacing: 0.03em;
}
.float-btn:hover { transform: translateY(-2px); }
.float-line { background: #06c755; color: #fff; }
.float-tel { background: var(--amber); color: var(--black); }

@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .founder-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .os-stats { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .why-grid { grid-template-columns: 1fr; }
  .rules-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero-h1 { font-size: 2.2rem; }
  .contrast-strip { grid-template-columns: 1fr; }
  .contrast-vs { writing-mode: horizontal-tb; padding: 12px; text-align: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .os-grid, .products-grid, .pricing-grid, .knowledge-grid { grid-template-columns: 1fr; }
  .firewall-row { grid-template-columns: 40px 1fr; }
  .firewall-items { display: none; }
  .compare-table th:first-child, .compare-table td:first-child { display: none; }
  .rules-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .founder-cert { display: none; }
}