/* =========================================================
   极客匠人 DLP · 介绍网站
   主题：Cyber / Tech / Futuristic
   ========================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  --bg-0: #04060D;
  --bg-1: #080D1B;
  --bg-2: #0D1428;
  --bg-3: #131B36;
  --line: rgba(0, 224, 255, 0.18);
  --line-soft: rgba(91, 107, 255, 0.14);
  --accent: #00E0FF;
  --accent-2: #5B6BFF;
  --accent-3: #39FF8B;
  --warn: #FFB547;
  --danger: #FF5577;
  --text-0: #EAF2FF;
  --text-1: #B7C5E1;
  --text-2: #8392B6;
  --text-3: #566387;
  --grad-1: linear-gradient(135deg, #00E0FF 0%, #5B6BFF 50%, #B14BFF 100%);
  --grad-2: linear-gradient(135deg, #39FF8B 0%, #00E0FF 100%);
  --grad-3: linear-gradient(180deg, rgba(0,224,255,.18), rgba(91,107,255,.04));
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-glow: 0 0 32px rgba(0, 224, 255, 0.28);
  --shadow-card: 0 20px 60px rgba(0, 8, 32, 0.55);
  --font-display: "Orbitron", "Rajdhani", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
  --t: 0.4s cubic-bezier(.22,.61,.36,1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-1);
  background: var(--bg-0);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
strong { color: var(--text-0); font-weight: 600; }

/* ---------- 背景层 ---------- */
.bg-layer {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(91, 107, 255, 0.20), transparent 60%),
    radial-gradient(1000px 600px at -10% 20%, rgba(0, 224, 255, 0.16), transparent 60%),
    linear-gradient(180deg, #04060D 0%, #060A18 50%, #04060D 100%);
}
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0, 224, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 224, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0%, transparent 75%);
  animation: gridShift 24s linear infinite;
}
@keyframes gridShift {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 60px 60px, 60px 60px; }
}
.bg-noise {
  position: absolute; inset: 0; opacity: .35; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.05 0 0 0 0 0.1 0 0 0 0 0.2 0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}
.bg-orb {
  position: absolute; width: 520px; height: 520px; border-radius: 50%;
  filter: blur(110px); opacity: .35; pointer-events: none;
}
.bg-orb--cyan   { top: 12%; left: 60%; background: var(--accent); }
.bg-orb--purple { top: 55%; left: -10%; background: var(--accent-2); }
.bg-orb--green  { top: 80%; left: 70%; background: var(--accent-3); opacity: .18; }

/* ---------- 容器 ---------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 通用 ---------- */
.section { padding: 120px 0; position: relative; }
.section + .section { border-top: 1px solid var(--line-soft); }
.section__head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 72px;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent);
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(0, 224, 255, 0.04);
  margin-bottom: 18px;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.2;
  margin: 0 0 18px;
  color: var(--text-0);
  letter-spacing: -0.01em;
}
.section__sub {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
}
.grad {
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: all var(--t);
}
.nav.is-scrolled {
  background: rgba(4, 6, 13, 0.78);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--line-soft);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav__brand {
  display: flex; align-items: center; gap: 12px;
}
.nav__logo {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(0, 224, 255, 0.05);
  border: 1px solid var(--line);
}
.nav__logo svg { width: 24px; height: 24px; }
.nav__title {
  display: flex; flex-direction: column; line-height: 1.1;
}
.nav__title strong {
  font-family: var(--font-display);
  font-size: 16px; letter-spacing: 0.05em;
  color: var(--text-0);
}
.nav__title em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px; color: var(--text-2);
  letter-spacing: 0.04em;
}
.nav__menu {
  display: flex; align-items: center; gap: 6px;
}
.nav__menu a {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-1);
  border-radius: 8px;
  transition: color var(--t), background var(--t);
}
.nav__menu a::before {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 1px;
  background: var(--grad-1); transform: scaleX(0); transform-origin: left;
  transition: transform var(--t);
}
.nav__menu a:hover { color: var(--text-0); }
.nav__menu a:hover::before { transform: scaleX(1); }
.nav__menu a.is-active { color: var(--accent); }
.nav__cta {
  margin-left: 8px;
  padding: 9px 18px !important;
  border: 1px solid var(--line) !important;
  background: linear-gradient(135deg, rgba(0,224,255,.15), rgba(91,107,255,.15)) !important;
  color: var(--text-0) !important;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}
.nav__cta::before { display: none; }
.nav__cta::after {
  content: ""; position: absolute; inset: 0;
  background: var(--grad-1); opacity: 0; transition: opacity var(--t);
  z-index: -1;
}
.nav__cta:hover { color: #fff !important; border-color: transparent !important; }
.nav__cta:hover::after { opacity: 1; }
.nav__toggle {
  display: none;
  width: 40px; height: 40px; border-radius: 8px;
  flex-direction: column; gap: 5px; align-items: center; justify-content: center;
  border: 1px solid var(--line);
}
.nav__toggle span {
  width: 18px; height: 2px; background: var(--text-1); border-radius: 1px;
  transition: transform var(--t), opacity var(--t);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  font-size: 14px; font-weight: 500;
  border-radius: 10px;
  letter-spacing: 0.02em;
  transition: transform var(--t), box-shadow var(--t), background var(--t);
  position: relative; overflow: hidden;
}
.btn svg { width: 16px; height: 16px; }
.btn--primary {
  background: var(--grad-1);
  color: #04060D;
  font-weight: 600;
  box-shadow: 0 10px 32px rgba(0, 224, 255, 0.28);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(0, 224, 255, 0.45); }
.btn--ghost {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-0);
  border: 1px solid var(--line);
}
.btn--ghost:hover { background: rgba(0, 224, 255, 0.08); border-color: var(--accent); color: var(--accent); }
.btn--block { display: flex; justify-content: center; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  padding: 140px 0 80px;
  position: relative;
  display: flex; align-items: center;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero__tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  background: rgba(0, 224, 255, 0.04);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero__tag .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-3);
  box-shadow: 0 0 8px var(--accent-3);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 5.4vw, 68px);
  line-height: 1.1;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
  color: var(--text-0);
}
.hero__line { display: block; }
.hero__line--grad {
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  filter: drop-shadow(0 0 32px rgba(0, 224, 255, 0.3));
}
.hero__desc {
  font-size: 16px; line-height: 1.85;
  color: var(--text-1);
  max-width: 580px;
  margin: 0 0 32px;
}
.hero__desc strong { color: var(--accent); }
.hero__cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(0,224,255,.05), rgba(91,107,255,.02));
}
.stat { text-align: center; }
.stat__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 2.6vw, 30px);
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: 0.04em;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* Hero 视觉（终端窗口） */
.hero__visual {
  position: relative;
  perspective: 1200px;
}
.hv-frame {
  position: relative;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.92), rgba(8, 13, 27, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(0,224,255,0.06) inset;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  transform: rotateY(-4deg) rotateX(2deg);
  animation: floatCard 8s ease-in-out infinite;
}
@keyframes floatCard {
  0%, 100% { transform: rotateY(-4deg) rotateX(2deg) translateY(0); }
  50% { transform: rotateY(-2deg) rotateX(1deg) translateY(-8px); }
}
.hv-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--line-soft);
}
.hv-dot { width: 10px; height: 10px; border-radius: 50%; }
.hv-dot--r { background: #FF5F57; }
.hv-dot--y { background: #FEBC2E; }
.hv-dot--g { background: #28C840; }
.hv-bar__title {
  margin-left: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-2);
  letter-spacing: 0.05em;
}
.hv-body { padding: 20px; min-height: 280px; }
.hv-line {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-1);
}
.hv-prompt { color: var(--accent); }
.hv-text { color: var(--text-0); flex: 1; }
.hv-text em { font-style: normal; color: var(--accent-3); }
.hv-status {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.06em;
}
.hv-status--ok   { background: rgba(57, 255, 139, 0.12); color: var(--accent-3); }
.hv-status--warn { background: rgba(255, 181, 71, 0.12); color: var(--warn); }
.hv-status--info { background: rgba(0, 224, 255, 0.12); color: var(--accent); }
.hv-bar-mini { width: 60px; height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.hv-bar-mini i { display: block; height: 100%; background: var(--grad-2); animation: bar 2.4s ease-in-out infinite; }
@keyframes bar { 0%, 100% { width: 30%; } 50% { width: 95%; } }
.hv-line--cursor .hv-blink { animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.hv-foot {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 14px 16px;
  border-top: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.2);
}
.hv-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  letter-spacing: 0.05em;
}
.hv-pill--ok { color: var(--accent-3); border-color: rgba(57, 255, 139, 0.4); }
.hv-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse at center, rgba(0, 224, 255, 0.25), transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

.hero__scroll {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.2em;
  color: var(--text-2);
}
.hero__scroll i {
  width: 1px; height: 36px; background: var(--text-2);
  position: relative; overflow: hidden;
}
.hero__scroll i::after {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 30%;
  background: var(--accent);
  animation: scrollLine 1.8s ease-in-out infinite;
}
@keyframes scrollLine { 0% { top: -30%; } 100% { top: 100%; } }

/* ---------- Pain ---------- */
.pain__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}
.pain__list {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.pain__list li {
  position: relative;
  display: flex; gap: 14px; align-items: flex-start;
  padding: 20px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.6), rgba(8, 13, 27, 0.6));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
}
.pain__list li:hover { border-color: var(--line); transform: translateY(-3px); }
.pain__list .ri {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  flex-shrink: 0;
}
.pain__answer {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(0,224,255,0.07), rgba(91,107,255,0.04)),
    rgba(8, 13, 27, 0.8);
  border: 1px solid var(--line);
  overflow: hidden;
}
.pain__answer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--grad-1);
}
.pain__answer__hd {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 600;
  margin-bottom: 18px;
}
.pain__answer p {
  margin: 0 0 18px;
  font-size: 15px; line-height: 1.9;
  color: var(--text-0);
}
.pain__checks {
  list-style: none; padding: 0; margin: 0;
}
.pain__checks li {
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-3);
  border-top: 1px dashed var(--line-soft);
}
.pain__checks li:first-child { border-top: none; }

/* ---------- Features ---------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.fcard {
  position: relative;
  padding: 30px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.55), rgba(8, 13, 27, 0.55));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  transition: all var(--t);
  overflow: hidden;
}
.fcard::before {
  content: ""; position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: var(--grad-1);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.6s var(--t);
}
.fcard::after {
  content: ""; position: absolute;
  bottom: -40%; right: -30%;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(0, 224, 255, 0.12), transparent 60%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--t);
}
.fcard:hover {
  transform: translateY(-6px);
  border-color: var(--line);
  box-shadow: 0 24px 60px rgba(0, 8, 32, 0.6), 0 0 0 1px rgba(0, 224, 255, 0.1);
}
.fcard:hover::before { transform: scaleX(1); }
.fcard:hover::after { opacity: 1; }
.fcard__icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 224, 255, 0.15), rgba(91, 107, 255, 0.08));
  border: 1px solid var(--line);
  color: var(--accent);
  margin-bottom: 20px;
  transition: transform var(--t);
}
.fcard:hover .fcard__icon { transform: scale(1.05) rotate(-3deg); }
.fcard__icon svg { width: 28px; height: 28px; }
.fcard h3 {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 12px;
}
.fcard p {
  margin: 0 0 18px;
  font-size: 14px; line-height: 1.75;
  color: var(--text-2);
}
.fcard__tags {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.fcard__tags li {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  color: var(--text-2);
  background: rgba(0, 224, 255, 0.03);
}

/* ---------- Architecture ---------- */
.arch__diagram {
  max-width: 1080px;
  margin: 0 auto 60px;
  display: flex; flex-direction: column; gap: 0;
  align-items: stretch;
}
.arch__layer {
  position: relative;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 22px 28px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.6), rgba(8, 13, 27, 0.6));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
}
.arch__layer:hover { border-color: var(--line); transform: translateX(4px); }
.arch__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  width: 100%;
}
.arch__row .arch__layer { padding: 22px 24px; }
.arch__no {
  font-family: var(--font-display);
  font-size: 24px; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-align: center;
  border-right: 1px solid var(--line-soft);
  padding-right: 16px;
}
.arch__title {
  font-family: var(--font-display);
  font-size: 15px; font-weight: 600;
  color: var(--text-0);
  margin-bottom: 4px;
}
.arch__desc {
  font-size: 13px;
  color: var(--text-2);
}
.arch__chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--accent);
  background: rgba(0, 224, 255, 0.05);
  white-space: nowrap;
}
.arch__conn {
  height: 24px;
  position: relative;
}
.arch__conn::before {
  content: ""; position: absolute;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 1px; height: 100%;
  background: linear-gradient(180deg, transparent, var(--accent), transparent);
}
.arch__conn::after {
  content: ""; position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  transform: translateX(-50%) rotate(45deg);
}
.arch__stack {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}
.arch__chip.tech {
  font-size: 12px;
  padding: 6px 12px;
}

/* ---------- Modules ---------- */
.modules__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.mcard {
  position: relative;
  padding: 24px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.5), rgba(8, 13, 27, 0.5));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
  overflow: hidden;
}
.mcard:hover {
  transform: translateY(-4px);
  border-color: var(--line);
  box-shadow: 0 12px 32px rgba(0, 8, 32, 0.5);
}
.mcard__no {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.mcard h4 {
  font-size: 15px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 8px;
  font-family: var(--font-display);
}
.mcard p {
  font-size: 13px; line-height: 1.65;
  color: var(--text-2);
  margin: 0 0 14px;
}
.mcard__tag {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: rgba(0, 224, 255, 0.08);
  border: 1px solid var(--line);
}
.mcard__tag ~ .mcard__no { padding-right: 60px; }

/* ---------- Security ---------- */
.security__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scard {
  position: relative;
  padding: 30px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.55), rgba(8, 13, 27, 0.55));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
}
.scard:hover { transform: translateY(-4px); border-color: var(--line); }
.scard__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(57, 255, 139, 0.15), rgba(0, 224, 255, 0.15));
  color: var(--accent-3);
  border: 1px solid rgba(57, 255, 139, 0.3);
  margin-bottom: 18px;
  letter-spacing: 0.06em;
}
.scard h4 {
  font-family: var(--font-display);
  font-size: 16px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 10px;
}
.scard p {
  font-size: 13px; line-height: 1.75;
  color: var(--text-2);
  margin: 0;
}

/* ---------- Deploy ---------- */
.deploy__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.dcard {
  position: relative;
  padding: 28px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.55), rgba(8, 13, 27, 0.55));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
}
.dcard:hover { transform: translateY(-4px); border-color: var(--line); }
.dcard__mode {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
}
.dcard h4 {
  font-family: var(--font-display);
  font-size: 16px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 10px;
}
.dcard p {
  font-size: 13px; line-height: 1.75;
  color: var(--text-2);
  margin: 0 0 14px;
}
.dcard ul {
  list-style: none; padding: 0; margin: 0;
}
.dcard li {
  position: relative;
  padding: 5px 0 5px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-1);
}
.dcard li::before {
  content: "›"; position: absolute; left: 0; color: var(--accent);
}

/* ---------- Scenes ---------- */
.scenes__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.scene {
  padding: 30px 18px;
  text-align: center;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.5), rgba(8, 13, 27, 0.5));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: all var(--t);
}
.scene:hover { transform: translateY(-4px); border-color: var(--line); }
.scene__no {
  display: block;
  font-size: 30px;
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 10px;
}
.scene h5 {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 6px;
}
.scene p {
  font-size: 12px;
  color: var(--text-2);
  margin: 0;
}

/* ---------- Contact ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  max-width: 1080px;
  margin: 0 auto;
}
.contact__card {
  padding: 36px;
  background: linear-gradient(180deg, rgba(13, 20, 40, 0.7), rgba(8, 13, 27, 0.7));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.contact__card::before {
  content: ""; position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: var(--grad-1);
}
.contact__card h4 {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 600;
  color: var(--text-0);
  margin: 0 0 24px;
  letter-spacing: 0.04em;
}
.contact__card dl {
  display: grid; gap: 18px; margin: 0 0 28px;
}
.contact__card dt {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.contact__card dd {
  margin: 0;
  font-size: 15px;
  color: var(--text-0);
}
.contact__card dd a {
  color: var(--accent);
  border-bottom: 1px dashed var(--line);
  transition: color var(--t);
}
.contact__card dd a:hover { color: var(--text-0); }

.contact__card--qr { text-align: center; display: flex; flex-direction: column; justify-content: center; }
.contact__wechat {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 14px 20px;
  background: rgba(0, 224, 255, 0.05);
  border: 1px dashed var(--line);
  border-radius: 10px;
  margin-bottom: 16px;
}
.contact__wechat--solo {
  margin: 8px 0 20px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(0,224,255,0.08), rgba(91,107,255,0.06));
  border: 1px solid var(--line);
}
.contact__wechat--solo .contact__wechat__id {
  font-size: 22px;
  letter-spacing: 0.08em;
}
.contact__wechat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  letter-spacing: 0.1em;
}
.contact__wechat__id {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.contact__hint {
  font-size: 13px;
  color: var(--text-2);
  margin: 0;
  line-height: 1.8;
}
.contact__hint strong { color: var(--accent); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(4, 6, 13, 0), rgba(4, 6, 13, 0.6));
  padding-top: 64px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 48px;
}
.footer__brand {
  display: flex; align-items: center; gap: 14px;
}
.footer__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--text-0);
  margin-bottom: 4px;
}
.footer__brand em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
}
.footer__col h6 {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin: 0 0 16px;
  text-transform: uppercase;
}
.footer__col a, .footer__col span {
  display: block;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 10px;
  transition: color var(--t);
}
.footer__col a:hover { color: var(--text-0); }
.footer__bottom {
  border-top: 1px solid var(--line-soft);
  padding: 20px 0;
}
.footer__bottomInner {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap; gap: 12px;
}
.footer__beian a {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-2);
  transition: color var(--t);
}
.footer__beian a:hover { color: var(--accent); }
.footer__beian svg { width: 14px; height: 14px; }

/* ---------- 动画 ---------- */
[data-anim] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--t), transform 0.7s var(--t);
}
[data-anim].is-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .section { padding: 80px 0; }
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .features__grid, .security__grid { grid-template-columns: repeat(2, 1fr); }
  .modules__grid { grid-template-columns: repeat(3, 1fr); }
  .deploy__grid { grid-template-columns: repeat(2, 1fr); }
  .scenes__grid { grid-template-columns: repeat(3, 1fr); }
  .pain__grid { grid-template-columns: 1fr; }
  .pain__list { grid-template-columns: 1fr 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .arch__layer { grid-template-columns: 60px 1fr; }
  .arch__layer .arch__chip { display: none; }
  .arch__row { grid-template-columns: 1fr; }
  .hv-frame { transform: none; animation: none; }
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section__head { margin-bottom: 48px; }
  .nav__menu {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(4, 6, 13, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-soft);
    padding: 20px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform var(--t);
  }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu a { width: 100%; padding: 12px 16px; }
  .nav__toggle { display: flex; }
  .hero { padding: 110px 0 60px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .features__grid, .security__grid, .modules__grid, .deploy__grid, .scenes__grid, .pain__list {
    grid-template-columns: 1fr;
  }
  .arch__layer { grid-template-columns: 1fr; gap: 8px; }
  .arch__no { border-right: none; border-bottom: 1px solid var(--line-soft); padding: 0 0 8px; text-align: left; }
  .arch__row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__bottomInner { justify-content: center; text-align: center; }
  .qr { width: 180px; height: 180px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-anim] { opacity: 1; transform: none; }
}