/* ====================================================
   江西 AI 圈 & OPC 联盟  ·  Stylesheet
   Theme: 赣鄱红土地 × AI 极客
   ==================================================== */

:root {
  /* Brand palette - 红土地 */
  --soil-50:  #fff5f0;
  --soil-100: #ffe5d6;
  --soil-200: #ffc4a3;
  --soil-300: #ff9466;
  --soil-400: #ff6a3d;
  --soil-500: #e8451a;   /* primary red-earth */
  --soil-600: #c5320e;
  --soil-700: #9c2308;
  --soil-800: #6e1804;

  /* Tech accent */
  --tech-cyan:   #00e0d0;
  --tech-blue:   #2b6df7;
  --tech-purple: #7d4dff;
  --tech-gold:   #ffb547;

  /* Neutral */
  --ink-0:   #ffffff;
  --ink-50:  #f8f5f1;
  --ink-100: #efeae3;
  --ink-200: #d8d2ca;
  --ink-300: #a39c92;
  --ink-500: #5b544a;
  --ink-700: #2b261f;
  --ink-900: #15110c;

  --bg: #faf6f0;
  --bg-dark: #15110c;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;

  --shadow-sm:  0 1px 2px rgba(110, 24, 4, 0.06), 0 2px 6px rgba(110, 24, 4, 0.04);
  --shadow:     0 6px 20px rgba(110, 24, 4, 0.08), 0 2px 6px rgba(110, 24, 4, 0.04);
  --shadow-lg:  0 18px 50px -12px rgba(110, 24, 4, 0.18), 0 8px 20px rgba(110, 24, 4, 0.08);

  --font-zh: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;

  --container: 1200px;
  --nav-h: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-zh);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: rgba(250, 246, 240, 0.7);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled {
  background: rgba(250, 246, 240, 0.92);
  border-bottom-color: rgba(110, 24, 4, 0.08);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-900);
}
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--soil-500), var(--soil-700) 60%, var(--ink-900));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 22px;
  box-shadow: 0 4px 14px -4px rgba(232, 69, 26, 0.6);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--tech-cyan), transparent 50%);
  z-index: -1;
  opacity: 0.5;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong { font-weight: 800; font-size: 16px; }
.brand-text em { font-style: normal; font-size: 11px; letter-spacing: 2px; color: var(--ink-500); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14.5px;
  color: var(--ink-700);
  font-weight: 500;
  position: relative;
  transition: color .2s;
}
.nav-links a:hover { color: var(--soil-500); }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -6px;
  height: 2px;
  background: var(--soil-500);
  transition: right .25s;
}
.nav-links a:not(.nav-cta):hover::after { right: 0; }

.nav-cta {
  padding: 9px 18px;
  background: var(--ink-900);
  color: #fff !important;
  border-radius: 999px;
  transition: transform .2s, background .2s;
}
.nav-cta:hover {
  background: var(--soil-500);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none;
  border: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--ink-900);
  border-radius: 2px;
  transition: transform .3s;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--nav-h) + 64px) 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(232, 69, 26, 0.18), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(0, 224, 208, 0.12), transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(255, 181, 71, 0.08), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, #f5ebde 100%);
  z-index: -2;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 69, 26, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 69, 26, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  z-index: -1;
}

.hero-inner {
  position: relative;
  text-align: center;
  max-width: 980px;
  padding-top: 24px;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 4px;
  font-weight: 700;
  color: var(--soil-600);
  background: rgba(232, 69, 26, 0.08);
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(232, 69, 26, 0.15);
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 76px);
  line-height: 1.15;
  color: var(--ink-900);
  margin: 0 0 22px;
  letter-spacing: -0.5px;
}
.grad {
  background: linear-gradient(120deg, var(--soil-500) 0%, var(--soil-700) 60%, #4a0f02 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}
.grad-2 {
  background: linear-gradient(120deg, var(--soil-500) 0%, var(--tech-purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--ink-500);
  margin: 0 auto 38px;
  max-width: 720px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 0;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(120deg, var(--soil-500), var(--soil-700));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(232, 69, 26, 0.55);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -8px rgba(232, 69, 26, 0.7);
}
.btn-ghost {
  background: rgba(21, 17, 12, 0.06);
  color: var(--ink-900);
  border: 1px solid rgba(21, 17, 12, 0.1);
}
.btn-ghost:hover {
  background: var(--ink-900);
  color: #fff;
}
.btn.block { width: 100%; justify-content: center; }

.hero-stats {
  list-style: none;
  margin: 0 auto 40px;
  padding: 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 880px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(232, 69, 26, 0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.hero-stats li {
  display: flex;
  flex-direction: column;
  align-items: center;
  border-right: 1px solid rgba(21, 17, 12, 0.06);
}
.hero-stats li:last-child { border-right: 0; }
.hero-stats strong {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 44px);
  background: linear-gradient(120deg, var(--soil-500), var(--soil-700));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
  font-weight: 900;
}
.hero-stats span {
  font-size: 13px;
  color: var(--ink-500);
}

.hero-cities {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-500);
}
.city-label { font-weight: 600; color: var(--ink-700); }
.city-chip {
  padding: 5px 12px;
  background: rgba(232, 69, 26, 0.1);
  color: var(--soil-700);
  border-radius: 999px;
  font-weight: 500;
}
.city-arrow { color: var(--soil-500); margin: 0 4px; }
.city-target {
  font-weight: 600;
  color: var(--ink-900);
  border-bottom: 2px solid var(--soil-500);
  padding-bottom: 1px;
}

.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  letter-spacing: 3px;
  font-weight: 700;
  color: var(--ink-500);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.hero-scroll span {
  width: 2px; height: 28px;
  background: linear-gradient(to bottom, transparent, var(--soil-500));
  animation: scrollLine 1.8s infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ COMMON SECTIONS ============ */
.section {
  padding: 110px 0;
  position: relative;
}
.section-head {
  margin-bottom: 60px;
  max-width: 760px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-tag {
  display: inline-block;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--soil-500);
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-tag.light { color: var(--tech-gold); }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--ink-900);
  margin: 0 0 18px;
  letter-spacing: -0.3px;
}
.section-title.light { color: #fff; }
.section-sub {
  font-size: 16px;
  color: var(--ink-500);
  margin: 0;
}

/* ============ ABOUT ============ */
.section-about { background: var(--bg); }
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text .lead {
  font-size: 19px;
  color: var(--ink-700);
  line-height: 1.7;
  margin: 0 0 18px;
}
.about-text .lead strong {
  color: var(--ink-900);
  background: linear-gradient(180deg, transparent 60%, rgba(255, 181, 71, 0.4) 60%);
}
.about-text > p {
  color: var(--ink-500);
  margin: 0 0 18px;
}
.about-points {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about-points li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 14px 18px;
  background: #fff;
  border-left: 3px solid var(--soil-500);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  box-shadow: var(--shadow-sm);
}
.about-points span {
  display: inline-block;
  min-width: 80px;
  font-weight: 700;
  color: var(--soil-700);
}

.about-card {
  position: relative;
  padding: 40px;
  background: linear-gradient(155deg, var(--ink-900) 0%, #2a1a0c 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.card-glow {
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 20% 0%, rgba(232, 69, 26, 0.5), transparent 50%),
              radial-gradient(circle at 80% 100%, rgba(0, 224, 208, 0.2), transparent 50%);
  z-index: 0;
  filter: blur(40px);
  animation: glow 8s ease-in-out infinite alternate;
}
@keyframes glow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(20deg); }
}
.about-card > * { position: relative; z-index: 1; }
.about-card h3 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 4px;
  color: var(--tech-gold);
  margin: 0 0 18px;
  text-transform: uppercase;
}
.about-card .quote {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 32px;
}
.three-tracks {
  display: grid;
  gap: 14px;
}
.track {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background .25s, transform .25s;
}
.track:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}
.track-num {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--soil-300);
  font-weight: 700;
  letter-spacing: 2px;
}
.track h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 4px 0;
  color: #fff;
}
.track p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

/* ============ VALUE ============ */
.section-value {
  background: linear-gradient(180deg, var(--bg) 0%, #fff5eb 100%);
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.value-card {
  background: #fff;
  padding: 32px 26px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(232, 69, 26, 0.08);
  display: flex;
  flex-direction: column;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 69, 26, 0.3);
}
.value-card.featured {
  background: linear-gradient(160deg, #fff 0%, #fff5eb 100%);
  border-color: rgba(232, 69, 26, 0.2);
}
.value-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--soil-500), var(--soil-700));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 8px 18px -8px rgba(232, 69, 26, 0.6);
}
.value-icon svg { width: 26px; height: 26px; }
.value-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 800;
  color: var(--ink-900);
  margin: 0 0 8px;
}
.value-card > p {
  font-size: 14px;
  color: var(--ink-500);
  margin: 0 0 16px;
  line-height: 1.6;
}
.value-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  font-size: 13.5px;
  color: var(--ink-700);
  flex: 1;
}
.value-card ul li {
  padding: 6px 0 6px 18px;
  position: relative;
  border-bottom: 1px dashed rgba(21, 17, 12, 0.06);
}
.value-card ul li:last-child { border: 0; }
.value-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 14px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--soil-500);
}
.value-cta {
  font-size: 14px;
  font-weight: 600;
  color: var(--soil-600);
  align-self: flex-start;
  transition: gap .2s;
}
.value-cta:hover { color: var(--soil-700); }

/* ============ BRAND MATRIX ============ */
.section-brands { background: #fff; }
.brand-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}
.brand-card {
  position: relative;
  padding: 32px 26px;
  border-radius: var(--radius-lg);
  background: var(--ink-50);
  overflow: hidden;
  transition: transform .35s, box-shadow .35s;
  display: flex;
  flex-direction: column;
}
.brand-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--soil-500), var(--soil-700));
}
.brand-card.brand-1 { grid-column: span 2; background: linear-gradient(160deg, #fff5eb 0%, #ffe5d6 100%); }
.brand-card.brand-2 { grid-column: span 2; background: linear-gradient(160deg, #f0eee8 0%, #d8d2ca 100%); }
.brand-card.brand-3 { grid-column: span 2; background: linear-gradient(160deg, var(--ink-900) 0%, #2a1a0c 100%); color: #fff; }
.brand-card.brand-4 { grid-column: span 3; background: linear-gradient(160deg, #fff 0%, #ffe5d6 100%); border: 1px solid rgba(232, 69, 26, 0.15); }
.brand-card.brand-5 { grid-column: span 3; background: linear-gradient(160deg, var(--soil-500) 0%, var(--soil-700) 100%); color: #fff; }

.brand-card.brand-3::before,
.brand-card.brand-5::before { background: linear-gradient(90deg, var(--tech-gold), var(--soil-300)); }

.brand-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.brand-no {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  opacity: 0.7;
}
.brand-tag {
  display: inline-block;
  margin-top: 6px;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.08);
  align-self: flex-start;
}
.brand-card.brand-3 .brand-tag,
.brand-card.brand-5 .brand-tag {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
}
.brand-card h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 900;
  margin: 0 0 8px;
  letter-spacing: -0.3px;
}
.brand-slogan {
  font-size: 15px;
  font-weight: 700;
  color: var(--soil-600);
  margin: 0 0 8px;
}
.brand-card.brand-3 .brand-slogan,
.brand-card.brand-5 .brand-slogan { color: var(--tech-gold); }
.brand-card p {
  font-size: 14px;
  line-height: 1.65;
  margin: 0;
  opacity: 0.85;
}
.brand-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid currentColor;
  align-self: flex-start;
}

/* ============ NIGHT SCHOOL ============ */
.section-night {
  background: linear-gradient(160deg, var(--ink-900) 0%, #321a08 100%);
  position: relative;
  overflow: hidden;
}
.section-night::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 70% 30%, rgba(232, 69, 26, 0.25), transparent 55%),
    radial-gradient(circle at 20% 80%, rgba(0, 224, 208, 0.15), transparent 55%);
  pointer-events: none;
}
.night-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
}
.night-left p { color: rgba(255, 255, 255, 0.7); }
.night-desc {
  font-size: 16.5px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.night-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}
.night-card {
  padding: 18px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  transition: background .2s;
}
.night-card:hover {
  background: rgba(255, 255, 255, 0.08);
}
.night-card h4 {
  font-size: 15px;
  color: var(--tech-gold);
  margin: 0 0 6px;
  font-weight: 700;
}
.night-card p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  margin: 0;
  line-height: 1.55;
}

.night-illust {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 420px;
  margin: 0 auto;
}
.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  inset: 0;
  animation: spin 30s linear infinite;
}
.orbit-2 { inset: 14%; border-style: solid; border-color: rgba(232, 69, 26, 0.25); animation-duration: 22s; animation-direction: reverse; }
.orbit-3 { inset: 28%; border-color: rgba(0, 224, 208, 0.25); animation-duration: 16s; }
@keyframes spin { to { transform: rotate(360deg); } }

.core-dot {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 110px; height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--soil-500), var(--soil-700));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 28px;
  color: #fff;
  box-shadow: 0 0 60px rgba(232, 69, 26, 0.5), inset 0 -8px 20px rgba(0, 0, 0, 0.3);
  z-index: 2;
}
.dot {
  position: absolute;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
}
.dot-a { top: 4%;  left: 30%; }
.dot-b { top: 14%; right: 6%; }
.dot-c { top: 50%; right: -6%; }
.dot-d { bottom: 14%; right: 8%; }
.dot-e { bottom: 4%;  left: 30%; }
.dot-f { top: 50%; left: -6%; }

/* ============ SOLUTIONS ============ */
.section-solutions { background: var(--bg); }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 60px;
}
.solution {
  display: block;
  padding: 32px 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid rgba(232, 69, 26, 0.08);
  position: relative;
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.solution::before {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--soil-500), var(--tech-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s;
}
.solution:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(232, 69, 26, 0.25);
}
.solution:hover::before { transform: scaleX(1); }
.solution.highlight {
  background: linear-gradient(160deg, var(--ink-900), #2a1a0c);
  color: #fff;
  border-color: transparent;
}
.solution.highlight::before { transform: scaleX(1); }

.solution-num {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 900;
  color: var(--soil-500);
  line-height: 1;
  opacity: 0.5;
  margin-bottom: 10px;
}
.solution.highlight .solution-num { color: var(--tech-gold); opacity: 0.9; }

.solution h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--ink-900);
  margin: 0 0 8px;
}
.solution.highlight h3 { color: #fff; }

.solution p {
  font-size: 14.5px;
  color: var(--ink-500);
  margin: 0 0 14px;
  line-height: 1.6;
}
.solution.highlight p { color: rgba(255, 255, 255, 0.7); }

.solution-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--soil-700);
  background: rgba(232, 69, 26, 0.08);
  padding: 5px 11px;
  border-radius: 999px;
}
.solution.highlight .solution-tag {
  background: rgba(255, 255, 255, 0.1);
  color: var(--tech-gold);
}

.logos-strip {
  padding: 32px 28px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid rgba(232, 69, 26, 0.08);
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.logos-label {
  font-size: 13px;
  color: var(--ink-500);
  font-weight: 600;
  flex-shrink: 0;
}
.logos-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--ink-700);
  font-weight: 600;
}
.logos-row span:not(:nth-child(2n)) {
  padding: 4px 10px;
  background: rgba(21, 17, 12, 0.04);
  border-radius: 6px;
}
.logos-row span:nth-child(2n) {
  color: var(--soil-300);
}

/* ============ TEAM ============ */
.section-team { background: linear-gradient(180deg, var(--bg) 0%, #fff 100%); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.member {
  padding: 28px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(21, 17, 12, 0.06);
  transition: transform .25s, box-shadow .25s;
  position: relative;
}
.member:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.member-founder {
  grid-column: span 1;
  border-color: rgba(232, 69, 26, 0.2);
  background: linear-gradient(180deg, #fff 0%, rgba(232, 69, 26, 0.03) 100%);
}
.member-co {
  border-color: rgba(59, 130, 246, 0.15);
}
.member-advisor {
  border-color: rgba(168, 85, 247, 0.15);
}
.member-partner {
  border-color: rgba(34, 197, 94, 0.15);
}
.member-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--soil-500), var(--soil-700));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: 0 8px 18px -8px rgba(232, 69, 26, 0.6);
}
.member-badge {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--ink-50);
  color: var(--ink-500);
}
.member-founder .member-badge {
  background: rgba(232, 69, 26, 0.1);
  color: var(--soil-600);
}
.member-co .member-badge {
  background: rgba(59, 130, 246, 0.1);
  color: #3B82F6;
}
.member-advisor .member-badge {
  background: rgba(168, 85, 247, 0.1);
  color: #A855F7;
}
.member-partner .member-badge {
  background: rgba(34, 197, 94, 0.1);
  color: #22C55E;
}
.member h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  margin: 0;
  color: var(--ink-900);
}
.member .role {
  display: inline-block;
  margin: 4px 0 12px;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--ink-400);
  font-weight: 600;
}
.member p {
  font-size: 13px;
  color: var(--ink-500);
  line-height: 1.65;
  margin: 0 0 16px;
}
.member-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.member-tags span {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--ink-50);
  color: var(--ink-400);
  border-radius: 4px;
  font-weight: 500;
}
.member-founder .member-tags span {
  background: rgba(232, 69, 26, 0.06);
  color: var(--soil-500);
}
.member-co .member-tags span {
  background: rgba(59, 130, 246, 0.06);
  color: #3B82F6;
}
.member-advisor .member-tags span {
  background: rgba(168, 85, 247, 0.06);
  color: #A855F7;
}
.member-partner .member-tags span {
  background: rgba(34, 197, 94, 0.06);
  color: #22C55E;
}

/* ============ PARTNER ============ */
.section-partner { background: linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.partner-card {
  padding: 32px 26px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(232, 69, 26, 0.1);
  transition: transform .25s, box-shadow .25s;
  position: relative;
}
.partner-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.partner-icon {
  display: inline-block;
  font-size: 32px;
  margin-bottom: 14px;
}
.partner-card h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 800;
  color: var(--ink-900);
  margin: 0 0 12px;
}
.partner-card p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.65;
  margin: 0 0 12px;
}
.partner-benefit {
  font-size: 13px !important;
  color: var(--soil-700) !important;
  font-weight: 600;
  border-top: 1px dashed rgba(232, 69, 26, 0.2);
  padding-top: 12px;
  margin-top: 14px !important;
}

/* ============ CITY ============ */
.section-city { background: var(--bg); padding: 60px 0; }
.city-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  isolation: isolate;
  padding: 64px 56px;
  color: #fff;
}
.city-banner-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--ink-900) 0%, #321a08 50%, var(--soil-700) 100%);
  z-index: -2;
}
.city-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 90% 10%, rgba(255, 181, 71, 0.2), transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(0, 224, 208, 0.15), transparent 50%);
  z-index: -1;
}
.city-banner::after {
  content: "🚩";
  position: absolute;
  font-size: 280px;
  right: -40px;
  bottom: -100px;
  opacity: 0.06;
  pointer-events: none;
}
.city-banner-content { max-width: 880px; position: relative; }
.city-banner .section-title { margin-bottom: 36px; }

.city-blocks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}
.city-block {
  padding: 22px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
}
.city-block h4 {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 2px;
  font-weight: 700;
  color: var(--tech-gold);
}
.city-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.city-tags span {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
}
.city-rights {
  margin-bottom: 32px;
}
.city-rights h4 {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--tech-gold);
  font-weight: 700;
}
.city-rights ol {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 12px;
}
.city-rights ol li {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14.5px;
  line-height: 1.7;
}
.city-rights strong {
  display: inline-block;
  margin-right: 10px;
  color: #fff;
  font-weight: 700;
}

/* ============ CTA ============ */
.section-cta {
  background:
    linear-gradient(180deg, var(--bg) 0%, #fff5eb 100%);
  padding: 100px 0 80px;
}
.cta-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}
.cta-head .section-tag { color: var(--soil-500); }
.cta-head .section-title { margin-bottom: 18px; }
.cta-desc {
  font-size: 16px;
  color: var(--ink-500);
  margin: 0 0 14px;
  line-height: 1.8;
}
.cta-wrap {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 32px;
  align-items: stretch;
}

.cta-form {
  background: #fff;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(232, 69, 26, 0.1);
}
.cta-form h3 {
  font-family: var(--font-serif);
  margin: 0 0 22px;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink-900);
}
.cta-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.cta-form label {
  display: block;
  margin-bottom: 14px;
}
.cta-form label > span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
  margin-bottom: 6px;
}
.cta-form input,
.cta-form select,
.cta-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(21, 17, 12, 0.12);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-family: inherit;
  color: var(--ink-700);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
  outline: none;
  border-color: var(--soil-500);
  box-shadow: 0 0 0 4px rgba(232, 69, 26, 0.12);
}
.cta-form textarea { resize: vertical; }
.cta-form-link {
  display: block;
  text-decoration: none;
  color: inherit;
}
.cta-form-card {
  background: #fff;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(232, 69, 26, 0.1);
  transition: transform .25s, box-shadow .25s;
}
.cta-form-link:hover .cta-form-card {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px -12px rgba(232, 69, 26, 0.25);
}
.cta-form-card h3 {
  font-family: var(--font-serif);
  margin: 0 0 22px;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink-900);
}
.form-desc {
  font-size: 14px;
  color: var(--ink-500);
  margin: 0 0 18px;
  line-height: 1.6;
}
.form-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
}
.form-benefits li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-600);
}
.benefit-icon {
  font-size: 18px;
  flex-shrink: 0;
}
.form-highlight {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: linear-gradient(135deg, rgba(232, 69, 26, 0.06) 0%, rgba(232, 69, 26, 0.02) 100%);
  border: 1px solid rgba(232, 69, 26, 0.12);
  border-radius: var(--radius-md);
  margin-bottom: 18px;
}
.highlight-icon {
  font-size: 24px;
  flex-shrink: 0;
}
.highlight-content strong {
  display: block;
  font-size: 14px;
  color: var(--ink-800);
  margin-bottom: 2px;
}
.highlight-content span {
  font-size: 12px;
  color: var(--ink-400);
}
.form-stats {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 16px;
  background: var(--ink-50);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}
.stat-item {
  text-align: center;
}
.stat-num {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--soil-600);
  margin-bottom: 2px;
}
.stat-label {
  font-size: 11px;
  color: var(--ink-400);
}
.stat-divider {
  width: 1px;
  height: 32px;
  background: rgba(21, 17, 12, 0.08);
}
.form-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(120deg, var(--soil-500), var(--soil-700));
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  transition: transform .2s, box-shadow .2s;
}
.cta-form-link:hover .form-btn {
  transform: scale(1.02);
  box-shadow: 0 8px 24px -6px rgba(232, 69, 26, 0.5);
}
.form-tip {
  font-size: 12px;
  color: var(--ink-300);
  margin: 12px 0 0;
  text-align: center;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--ink-900);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 28px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer .brand-text strong { color: #fff; }
.footer .brand-text em { color: rgba(255, 255, 255, 0.5); }
.footer-brand p {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 13.5px;
  line-height: 1.7;
}
.footer-col h5 {
  font-size: 13px;
  letter-spacing: 2px;
  font-weight: 700;
  color: var(--tech-gold);
  margin: 0 0 16px;
  text-transform: uppercase;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li { margin-bottom: 8px; }
.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13.5px;
  transition: color .2s;
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ FLOAT CTA ============ */
.float-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  background: linear-gradient(120deg, var(--soil-500), var(--soil-700));
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 14px 30px -8px rgba(232, 69, 26, 0.6);
  z-index: 50;
  transition: transform .25s;
}
.float-cta:hover { transform: translateY(-4px) scale(1.03); }

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============ BRAND LOGO IN CARDS ============ */
.brand-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  margin: 8px 0 14px;
  display: block;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.08));
}
.brand-card.brand-3 .brand-logo,
.brand-card.brand-5 .brand-logo {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 14px;
  padding: 6px;
}

/* ============ GALLERY ============ */
.section-gallery {
  background: linear-gradient(180deg, var(--bg) 0%, #fff 100%);
  position: relative;
}
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.g-filter {
  padding: 9px 18px;
  border: 1px solid rgba(21, 17, 12, 0.12);
  background: #fff;
  border-radius: 999px;
  color: var(--ink-700);
  font-size: 13.5px;
  font-weight: 600;
  transition: all .2s;
}
.g-filter:hover {
  border-color: var(--soil-500);
  color: var(--soil-600);
}
.g-filter.active {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: #fff;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.g-item {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-100);
  cursor: zoom-in;
  aspect-ratio: 1 / 1;
  box-shadow: var(--shadow-sm);
  transition: transform .35s, box-shadow .35s, opacity .3s;
}
.g-item.hidden { display: none; }
.g-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  z-index: 2;
}
.g-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.g-item:hover img {
  transform: scale(1.07);
}
.g-item figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 50px 14px 14px;
  font-size: 12.5px;
  color: #fff;
  background: linear-gradient(to top, rgba(21, 17, 12, 0.95) 0%, rgba(21, 17, 12, 0.6) 50%, transparent 100%);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.4;
  font-weight: 500;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .3s, transform .3s;
}
.g-item:hover figcaption,
.g-item:focus-within figcaption {
  opacity: 1;
  transform: none;
}
.g-tag {
  flex-shrink: 0;
  padding: 3px 8px;
  background: var(--soil-500);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.gallery-foot {
  margin-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  color: var(--ink-500);
  flex-wrap: wrap;
  gap: 10px;
}
.gallery-cta {
  font-weight: 600;
  color: var(--soil-600);
  border-bottom: 1px solid currentColor;
}
.gallery-cta:hover { color: var(--soil-700); }

/* 加载更多按钮 */
.gallery-loadmore {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}
.gallery-loadmore .btn {
  padding: 12px 32px;
  font-size: 14px;
  background: #fff;
  color: var(--ink-700);
  border: 1.5px solid rgba(21, 17, 12, 0.15);
}
.gallery-loadmore .btn:hover {
  border-color: var(--soil-500);
  color: var(--soil-600);
  transform: translateY(-2px);
}

/* ============ CTA QR CARD ============ */
.cta-qr {
  position: relative;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--ink-900) 0%, #2a1a0c 60%, #4a1f0a 100%);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.cta-qr::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 20% 0%, rgba(232, 69, 26, 0.4), transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(255, 181, 71, 0.18), transparent 55%);
  filter: blur(50px);
  z-index: -1;
}
.qr-eyebrow {
  font-size: 11.5px;
  letter-spacing: 4px;
  font-weight: 700;
  color: var(--tech-gold);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.cta-qr h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 900;
  margin: 0 0 10px;
}
.qr-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 26px;
  line-height: 1.6;
}
.qr-desc strong {
  color: var(--tech-gold);
  font-weight: 700;
}

.qr-frame {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0 auto;
  background: #fff;
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 18px 40px -10px rgba(0, 0, 0, 0.6);
}
.qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.qr-corners span {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 3px solid var(--tech-gold);
}
.qr-corners span:nth-child(1) { top: -4px; left: -4px; border-right: 0; border-bottom: 0; border-top-left-radius: 6px; }
.qr-corners span:nth-child(2) { top: -4px; right: -4px; border-left: 0; border-bottom: 0; border-top-right-radius: 6px; }
.qr-corners span:nth-child(3) { bottom: -4px; left: -4px; border-right: 0; border-top: 0; border-bottom-left-radius: 6px; }
.qr-corners span:nth-child(4) { bottom: -4px; right: -4px; border-left: 0; border-top: 0; border-bottom-right-radius: 6px; }
.qr-logo-mark {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 11px;
  color: var(--soil-700);
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 0 0 3px #fff;
  letter-spacing: 1px;
}

.qr-uses {
  list-style: none;
  margin: 28px 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
}
.qr-uses li {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 6px;
}
.qr-uses li span {
  color: var(--soil-300);
  font-weight: 700;
}

.kb-link {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  color: #fff;
  transition: background .2s, border-color .2s, transform .2s;
}
.kb-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--tech-gold);
  transform: translateY(-2px);
}
.kb-icon {
  font-size: 22px;
  flex-shrink: 0;
}
.kb-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.kb-text strong {
  font-size: 14.5px;
  font-weight: 700;
  color: #fff;
}
.kb-text em {
  font-style: normal;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}
.kb-link svg {
  color: var(--tech-gold);
  flex-shrink: 0;
}

/* ============ LIGHTBOX ============ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(15, 11, 6, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 60px 40px;
  backdrop-filter: blur(6px);
}
.lightbox.open { display: flex; }
.lb-figure {
  margin: 0;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
#lbImg {
  max-width: 100%;
  max-height: 78vh;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}
#lbCap {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
  font-weight: 500;
  max-width: 720px;
}
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 26px;
  font-weight: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s, transform .2s;
  line-height: 1;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover {
  background: var(--soil-500);
  transform: scale(1.05);
}
.lb-close { top: 24px; right: 24px; }
.lb-prev  { left: 24px; top: 50%; transform: translateY(-50%); }
.lb-next  { right: 24px; top: 50%; transform: translateY(-50%); }
.lb-prev:hover { transform: translateY(-50%) scale(1.05); }
.lb-next:hover { transform: translateY(-50%) scale(1.05); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-card.brand-1, .brand-card.brand-2, .brand-card.brand-3,
  .brand-card.brand-4, .brand-card.brand-5 { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .gallery-loadmore { margin-top: 28px; }
  .cta-wrap { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }
  .section-title { font-size: clamp(24px, 3.5vw, 40px); }
}

@media (max-width: 800px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.show {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    padding: 24px;
    gap: 18px;
    box-shadow: var(--shadow);
    border-top: 1px solid rgba(0,0,0,0.06);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  .hero-map {
    display: none;
  }

  .section { padding: 80px 0; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .night-wrap { grid-template-columns: 1fr; gap: 40px; }
  .night-cards { grid-template-columns: 1fr; }
  .city-banner { padding: 48px 28px; }
  .city-blocks { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); padding: 18px; }
  .hero-stats li:nth-child(2) { border-right: 0; }
  .hero-stats li:nth-child(1), .hero-stats li:nth-child(2) {
    border-bottom: 1px solid rgba(21, 17, 12, 0.06);
    padding-bottom: 16px; margin-bottom: 8px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-form .row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .gallery-loadmore { margin-top: 24px; }
  .g-item figcaption { opacity: 1; transform: none; padding: 22px 12px 10px; font-size: 11.5px; }
  .lb-prev, .lb-next { width: 40px; height: 40px; font-size: 22px; }
  .section-title { font-size: clamp(22px, 5vw, 32px); line-height: 1.25; }
  .section-title br { display: none; }
}

@media (max-width: 800px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .value-grid, .solutions-grid, .partner-grid, .team-grid, .brand-grid {
    grid-template-columns: 1fr;
  }
  .member-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .avatar { width: 48px; height: 48px; font-size: 18px; }
  .float-cta span { display: none; }
  .float-cta { padding: 14px; }
  .container { padding: 0 20px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .gallery-loadmore { margin-top: 20px; }
  .qr-frame { width: 200px; height: 200px; }
  .qr-uses { grid-template-columns: 1fr; }
  .section-title { font-size: clamp(20px, 6vw, 28px); }
  .section-title br { display: none; }
}