/* ============================================================
   江苏皓湖网络科技有限公司 — 企业官网样式 v2.0 Premium
   色彩体系:
   - 深海蓝:    #070f1e
   - 主蓝:      #0f2851
   - 中蓝:      #1a4080
   - 青绿:      #00c2d4
   - 青绿亮:    #00e5f5
   - 暖橘:      #f5891f
   - 橘亮:      #ffac4e
   - 浅灰背景:  #f4f7fb
   - 深字色:    #111827
   - 中字色:    #4b5563
============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&family=Inter:wght@300;400;500;600;700;800;900&display=swap');
@import url('premium-enhance.css');
@import url('icons.css');

/* ─── CSS 变量 ──────────────────────────────────────────── */
:root {
  --deep-blue:      #070f1e;
  --navy:           #0b1a35;
  --primary-blue:   #0f2851;
  --mid-blue:       #1a4080;
  --sky-blue:       #1e5aa8;
  --accent-teal:    #00c2d4;
  --teal-bright:    #00e5f5;
  --teal-glow:      rgba(0,194,212,.35);
  --warm-orange:    #f5891f;
  --orange-bright:  #ffac4e;
  --orange-glow:    rgba(245,137,31,.35);
  --light-bg:       #f4f7fb;
  --white:          #ffffff;
  --text-dark:      #111827;
  --text-mid:       #4b5563;
  --text-light:     #9ca3af;
  --border:         #e5e9f0;
  --border-dark:    rgba(255,255,255,.08);

  /* Gradients */
  --grad-dark:      linear-gradient(140deg,#070f1e 0%,#0f2851 55%,#081a3a 100%);
  --grad-teal:      linear-gradient(135deg,#00c2d4 0%,#0098b0 100%);
  --grad-orange:    linear-gradient(135deg,#f5891f 0%,#e06a00 100%);
  --grad-card:      linear-gradient(145deg,#ffffff 0%,#f8fafc 100%);
  --grad-glass:     linear-gradient(135deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%);

  /* Shadows */
  --shadow-xs:      0 1px 4px rgba(0,0,0,.06);
  --shadow-sm:      0 4px 12px rgba(0,0,0,.08);
  --shadow-md:      0 10px 36px rgba(0,0,0,.13);
  --shadow-lg:      0 24px 64px rgba(0,0,0,.18);
  --shadow-xl:      0 40px 100px rgba(0,0,0,.25);
  --shadow-teal:    0 8px 32px rgba(0,194,212,.3);
  --shadow-orange:  0 8px 32px rgba(245,137,31,.3);

  /* Radius */
  --r-sm:  8px;
  --r-md:  14px;
  --r-lg:  22px;
  --r-xl:  32px;
  /* 向后兼容别名 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --light-gray: #f4f7fb;
  --text-mid: #4b5563;
  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --gradient-blue: linear-gradient(140deg,#070f1e 0%,#0f2851 55%,#081a3a 100%);
  --gradient-teal: linear-gradient(135deg,#00c2d4 0%,#0098b0 100%);
  --gradient-orange: linear-gradient(135deg,#f5891f 0%,#e06a00 100%);
  --shadow-lg: 0 24px 64px rgba(0,0,0,.18);
  --shadow-md: 0 10px 36px rgba(0,0,0,.13);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.08);


  /* Transition */
  --ease:  cubic-bezier(.4,0,.2,1);
  --t:     all .3s var(--ease);
  --t-slow: all .6s var(--ease);
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans SC','Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
a { color: inherit; text-decoration: none; transition: var(--t); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }

/* ─── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--deep-blue); }
::-webkit-scrollbar-thumb { background: var(--accent-teal); border-radius: 3px; }

/* ─── Keyframes ─────────────────────────────────────────── */
@keyframes floatUp {
  0%   { opacity:0; transform:translateY(0)    scale(.5); }
  20%  { opacity:.5; }
  80%  { opacity:.15; }
  100% { opacity:0; transform:translateY(-100vh) scale(1.8); }
}
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.4; transform:scale(1.5); }
}
@keyframes scrollDown {
  0%   { top:6px;  opacity:1; }
  100% { top:20px; opacity:0; }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes glowPulse {
  0%,100% { box-shadow: 0 0 20px var(--teal-glow); }
  50%      { box-shadow: 0 0 40px var(--teal-glow), 0 0 80px rgba(0,194,212,.15); }
}
@keyframes borderGlow {
  0%,100% { border-color: rgba(0,194,212,.3); }
  50%      { border-color: rgba(0,194,212,.7); }
}
@keyframes fadeSlideUp {
  from { opacity:0; transform:translateY(24px); }
  to   { opacity:1; transform:translateY(0); }
}
@keyframes float {
  0%,100% { transform:translateY(0px); }
  50%      { transform:translateY(-10px); }
}
@keyframes rotateGrad {
  from { transform:rotate(0deg); }
  to   { transform:rotate(360deg); }
}

/* ─── Utility ───────────────────────────────────────────── */
.container { max-width:1200px; margin:0 auto; padding:0 28px; }
.section { padding:110px 0; }
.section-alt { background:var(--light-bg); }
.section-dark { background:var(--deep-blue); }
.text-center { text-align:center; }
.mt-8  { margin-top:8px; }  .mt-16 { margin-top:16px; }
.mt-24 { margin-top:24px; } .mt-40 { margin-top:40px; }
.text-white  { color:var(--white); }
.text-teal   { color:var(--accent-teal); }
.text-orange { color:var(--warm-orange); }

/* ─── Section Labels ────────────────────────────────────── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--accent-teal);
  background: rgba(0,194,212,.08);
  padding: 7px 18px;
  border-radius: 30px;
  margin-bottom: 18px;
  border: 1px solid rgba(0,194,212,.22);
  position: relative;
  overflow: hidden;
}
.section-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(0,194,212,.12), transparent);
  background-size: 200% 100%;
  animation: shimmer 3s infinite;
}

.section-title {
  font-size: clamp(26px,4vw,42px);
  color: var(--text-dark);
  margin-bottom: 18px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.5px;
}
.section-title span {
  background: linear-gradient(135deg,var(--accent-teal),var(--teal-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 16px;
  color: var(--text-mid);
  max-width: 600px;
  line-height: 1.9;
}

.section-header {
  text-align: center;
  margin-bottom: 68px;
}
.section-header .section-desc { margin: 0 auto; }

.section-header-line {
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg,var(--accent-teal),var(--teal-bright));
  border-radius: 2px;
  margin: 18px auto 0;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: var(--r-md);
  font-size: 15px;
  font-weight: 600;
  transition: var(--t);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,transparent,rgba(255,255,255,.15),transparent);
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity .3s;
}
.btn:hover::after { opacity:1; animation: shimmer .8s ease; }

.btn-primary {
  background: var(--grad-teal);
  color: var(--white);
  box-shadow: var(--shadow-teal);
  border: 1px solid rgba(0,194,212,.4);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(0,194,212,.45);
  color: var(--white);
}

.btn-outline {
  background: rgba(255,255,255,.07);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.45);
  backdrop-filter: blur(10px);
}
.btn-outline:hover {
  background: rgba(255,255,255,.14);
  border-color: var(--white);
  transform: translateY(-3px);
}

.btn-orange {
  background: var(--grad-orange);
  color: var(--white);
  box-shadow: var(--shadow-orange);
  border: 1px solid rgba(245,137,31,.4);
}
.btn-orange:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(245,137,31,.5);
  color: var(--white);
}

/* ─── Navigation ────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  transition: var(--t);
}
#navbar.transparent { background: transparent; }
#navbar.scrolled {
  background: rgba(7,15,30,.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 2px 40px rgba(0,0,0,.4), 0 1px 0 rgba(255,255,255,.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  padding: 0 32px;
  max-width: 1380px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.nav-logo img {
  height: 46px; width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(0,194,212,.25));
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.nav-logo-cn {
  font-size: 16px; font-weight: 800;
  color: var(--white);
  line-height: 1.25;
  letter-spacing: 0.04em;
}
.nav-logo-en {
  font-size: 10px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
  line-height: 1.35;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 14px; font-weight: 500;
  color: rgba(255,255,255,.8);
  border-radius: var(--r-sm);
  transition: var(--t);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 2px;
  background: linear-gradient(90deg,var(--accent-teal),var(--teal-bright));
  border-radius: 1px;
  transition: var(--t);
}
.nav-link:hover { color: var(--white); background: rgba(255,255,255,.05); }
.nav-link:hover::after, .nav-link.active::after { width: 55%; }
.nav-link.active { color: var(--accent-teal); }

.nav-cta {
  margin-left: 14px;
  padding: 10px 26px;
  background: var(--grad-orange);
  color: var(--white) !important;
  font-size: 14px; font-weight: 700;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-orange);
  transition: var(--t);
  border: 1px solid rgba(245,137,31,.4);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(245,137,31,.55);
  color: var(--white);
}
.nav-cta::after { display:none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span {
  display: block; width:24px; height:2px;
  background: var(--white); border-radius:2px;
  transition: var(--t);
}
.nav-toggle.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity:0; }
.nav-toggle.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ─── Hero ──────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--deep-blue);
}
.hero-bg { position:absolute; inset:0; z-index:0; }
.hero-bg img { width:100%; height:100%; object-fit:cover; opacity:.28; }

/* Animated dark overlay with subtle gradient */
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    140deg,
    rgba(7,15,30,.95) 0%,
    rgba(7,15,30,.55) 55%,
    rgba(7,15,30,.8) 100%
  );
  z-index: 1;
}

/* Noise texture overlay for depth */
.hero-overlay::after {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");
  opacity: .4;
}

/* Glowing orbs */
.hero::before {
  content: '';
  position: absolute;
  top: -20%; left: -10%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,194,212,.07) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 2;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245,137,31,.05) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 2;
  animation: float 10s ease-in-out infinite reverse;
}

/* Dot grid background */
.hero-grid {
  position: absolute; inset: 0; z-index: 2;
  background-image: radial-gradient(rgba(0,194,212,.15) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-particles { position:absolute; inset:0; z-index:2; overflow:hidden; }
.particle {
  position: absolute;
  user-select: none;
  pointer-events: none;
  opacity: 0;
  will-change: transform, opacity;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Three distinct animation styles for variety */
.anim-rise {
  animation: floatRise infinite linear;
}
.anim-drift {
  animation: floatDrift infinite linear;
}
.anim-pulse {
  animation: floatPulse infinite linear;
}

@keyframes floatRise {
  0% { transform: translateY(110vh) translateX(0) rotate(0deg) scale(0.6); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-15vh) translateX(60px) rotate(360deg) scale(1.1); opacity: 0; }
}

@keyframes floatDrift {
  0% { transform: translateY(95vh) translateX(0) scale(0.8) rotate(0deg); opacity: 0; }
  15% { opacity: 1; }
  35% { transform: translateY(65vh) translateX(50px) scale(1.05) rotate(45deg); }
  65% { transform: translateY(35vh) translateX(-50px) scale(0.9) rotate(-45deg); }
  85% { opacity: 1; }
  100% { transform: translateY(-15vh) translateX(30px) scale(1.1) rotate(180deg); opacity: 0; }
}

@keyframes floatPulse {
  0% { transform: translateY(105vh) scale(0.5) rotate(0deg); opacity: 0; }
  15% { opacity: 1; }
  30% { transform: translateY(75vh) scale(1.2) rotate(15deg); }
  55% { transform: translateY(50vh) scale(0.7) rotate(-15deg); }
  80% { transform: translateY(25vh) scale(1.1) rotate(10deg); opacity: 1; }
  100% { transform: translateY(-15vh) scale(0.5) rotate(0deg); opacity: 0; }
}

.hero-content {
  position: relative; z-index: 3;
  max-width: 1200px;
  margin: 0 auto;
  padding: 130px 28px 90px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(0,194,212,.1);
  border: 1px solid rgba(0,194,212,.28);
  color: var(--accent-teal);
  font-size: 13px; font-weight: 600;
  padding: 9px 22px;
  border-radius: 40px;
  margin-bottom: 32px;
  letter-spacing: 1.5px;
  backdrop-filter: blur(8px);
  animation: borderGlow 3s ease-in-out infinite;
}
.hero-badge-dot {
  width: 8px; height: 8px;
  background: var(--accent-teal);
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 8px var(--accent-teal);
}

.hero-title {
  font-size: clamp(36px,6vw,68px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero-title .highlight {
  background: linear-gradient(135deg,var(--accent-teal) 0%,var(--teal-bright) 50%,var(--accent-teal) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}
.hero-title .highlight-orange {
  background: linear-gradient(135deg,var(--warm-orange) 0%,var(--orange-bright) 50%,var(--warm-orange) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

.hero-sub {
  font-size: clamp(15px,2vw,18px);
  color: rgba(255,255,255,.68);
  max-width: 640px;
  line-height: 1.9;
  margin-bottom: 48px;
  font-weight: 300;
}

.hero-actions { display:flex; align-items:center; gap:16px; flex-wrap:wrap; }

.hero-stats {
  display: flex;
  gap: 52px;
  margin-top: 80px;
  padding-top: 44px;
  border-top: 1px solid rgba(255,255,255,.08);
  flex-wrap: wrap;
}
.hero-stat-item { position: relative; }
.hero-stat-num {
  display: block;
  font-size: 40px; font-weight: 900;
  color: var(--white);
  line-height: 1;
  font-family: 'Inter', sans-serif;
}
.hero-stat-num span { color: var(--accent-teal); }
.hero-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.45);
  margin-top: 8px;
  letter-spacing: 1px;
}

.scroll-indicator {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex; flex-direction: column;
  align-items: center; gap: 10px;
  color: rgba(255,255,255,.35);
  font-size: 11px; letter-spacing: 2.5px;
}
.scroll-mouse {
  width: 24px; height: 38px;
  border: 1.5px solid rgba(255,255,255,.25);
  border-radius: 12px; position: relative;
}
.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--accent-teal);
  border-radius: 2px;
  animation: scrollDown 2s infinite;
  box-shadow: 0 0 6px var(--accent-teal);
}

/* ─── Service Highlights (homepage floating bar) ────────── */
.service-highlights {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin-top: -72px;
  position: relative;
  z-index: 10;
  border: 1px solid var(--border);
}
.sh-item {
  padding: 38px 34px;
  border-right: 1px solid var(--border);
  transition: var(--t);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.sh-item::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-teal);
  transform: scaleX(0);
  transform-origin: center;
  transition: var(--t);
}
.sh-item:hover::before { transform: scaleX(1); }
.sh-item:last-child { border-right: none; }
.sh-item:hover { background: linear-gradient(135deg,#f0fbff,#e4f8fc); }
.sh-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.sh-title { font-size: 17px; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.sh-desc { font-size: 13px; color: var(--text-mid); line-height: 1.7; }

/* ─── Business Cards ────────────────────────────────────── */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(320px,1fr));
  gap: 28px;
}
.biz-card {
  background: var(--grad-card);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--t-slow);
  border: 1px solid var(--border);
  position: relative;
}
.biz-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg,rgba(0,194,212,.35),rgba(0,194,212,.0),rgba(245,137,31,.2));
  opacity: 0;
  transition: var(--t);
  z-index: 0;
}
.biz-card:hover::before { opacity: 1; }
.biz-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.biz-card > * { position: relative; z-index: 1; }
.biz-card-img { width:100%; height:230px; object-fit:cover; transition:transform .6s var(--ease); }
.biz-card:hover .biz-card-img { transform: scale(1.04); }
.biz-card-body { padding: 30px; }
.biz-card-icon {
  width: 54px; height: 54px;
  background: linear-gradient(135deg,var(--accent-teal),#0098b0);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  font-size: 22px;
  box-shadow: 0 4px 16px rgba(0,194,212,.3);
}
.biz-card-title { font-size: 20px; font-weight: 800; color:var(--text-dark); margin-bottom: 10px; }
.biz-card-desc { font-size: 14px; color: var(--text-mid); line-height: 1.85; }
.biz-card-link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 20px; font-size: 14px; font-weight: 700;
  color: var(--accent-teal);
}
.biz-card-link:hover { gap: 12px; }

/* ─── Advantages (dark section) ─────────────────────────── */
.adv-section {
  background: var(--grad-dark);
  position: relative; overflow: hidden;
}
.adv-section .section-title { color: var(--white); }

/* Large decorative radial glow */
.adv-section::before {
  content: '';
  position: absolute;
  top: -30%; right: -15%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,194,212,.07) 0%, transparent 70%);
  border-radius: 50%;
}
.adv-section::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -15%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245,137,31,.05) 0%, transparent 70%);
  border-radius: 50%;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  gap: 24px;
  position: relative; z-index: 1;
}
.adv-card {
  background: var(--grad-glass);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r-lg);
  padding: 38px 30px;
  transition: var(--t);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative; overflow: hidden;
}
.adv-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(0,194,212,.12) 0%, transparent 70%);
  border-radius: 50%;
  transition: var(--t);
}
.adv-card:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(0,194,212,.38);
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0,0,0,.3), 0 0 30px rgba(0,194,212,.08);
}
.adv-card:hover::before {
  width: 200px; height: 200px;
  top: -80px; right: -80px;
}
.adv-num {
  font-size: 56px; font-weight: 900;
  color: var(--accent-teal); opacity: .15;
  line-height: 1; margin-bottom: 4px;
  font-family: 'Inter',sans-serif;
}
.adv-icon {
  width: 58px; height: 58px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg,rgba(0,194,212,.18),rgba(0,194,212,.04));
  border: 1px solid rgba(0,194,212,.28);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 22px;
  transition: var(--t);
}
.adv-card:hover .adv-icon {
  background: linear-gradient(135deg,rgba(0,194,212,.3),rgba(0,194,212,.1));
  border-color: var(--accent-teal);
  box-shadow: 0 0 20px rgba(0,194,212,.25);
}
.adv-title { font-size: 20px; font-weight: 800; color:var(--white); margin-bottom: 12px; }
.adv-desc { font-size: 14px; color: rgba(255,255,255,.55); line-height: 1.85; }

/* ─── Services Grid ─────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(340px,1fr));
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 38px 34px;
  border: 1px solid var(--border);
  transition: var(--t);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 0;
  background: var(--grad-teal);
  transition: height .4s var(--ease);
  border-radius: 0 2px 2px 0;
}
.service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 100%;
  background: linear-gradient(135deg,rgba(0,194,212,.03),transparent);
  opacity: 0;
  transition: var(--t);
}
.service-card:hover::before { height: 100%; }
.service-card:hover::after  { opacity: 1; }
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
  border-color: rgba(0,194,212,.22);
}
.service-icon {
  width: 66px; height: 66px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 22px;
  transition: var(--t);
  position: relative; z-index: 1;
}
.service-card:hover .service-icon { transform: scale(1.08); }
.service-icon-1 { background:linear-gradient(135deg,#d6f3f8,#a8e8f4); }
.service-icon-2 { background:linear-gradient(135deg,#fef0e0,#fdd9ad); }
.service-icon-3 { background:linear-gradient(135deg,#e4edfe,#bdd4fc); }
.service-icon-4 { background:linear-gradient(135deg,#e4f5e5,#c0e6c2); }
.service-icon-5 { background:linear-gradient(135deg,#fce1ea,#f9b8cc); }
.service-icon-6 { background:linear-gradient(135deg,#f0e4fc,#ddbef6); }
.service-title { font-size: 19px; font-weight: 800; color:var(--text-dark); margin-bottom: 12px; position:relative;z-index:1; }
.service-desc  { font-size: 14px; color:var(--text-mid); line-height:1.85; margin-bottom:22px; position:relative;z-index:1; }
.service-tags  { display:flex; flex-wrap:wrap; gap:8px; position:relative;z-index:1; }
.service-tag {
  font-size: 12px; padding: 5px 14px;
  background: var(--light-bg); color: var(--text-mid);
  border-radius: 20px; font-weight: 500;
  border: 1px solid var(--border);
  transition: var(--t);
}
.service-card:hover .service-tag { background: rgba(0,194,212,.08); border-color: rgba(0,194,212,.2); color: var(--accent-teal); }

/* ─── Cases ─────────────────────────────────────────────── */
.cases-section { position:relative; overflow:hidden; background:var(--light-bg); }
.cases-section::before {
  content: '';
  position: absolute; inset: 0;
  background: url('img/case_study_bg.png') center/cover no-repeat;
  opacity: .03;
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(340px,1fr));
  gap: 24px;
  position: relative; z-index: 1;
}
.case-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: var(--t-slow);
  border: 1px solid var(--border);
}
.case-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-lg); }
.case-card-header {
  padding: 30px 30px 22px;
  background: var(--grad-dark);
  position: relative; overflow: hidden;
}
.case-card-header::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: rgba(0,194,212,.1);
}
.case-card-header::after {
  content: '';
  position: absolute;
  bottom: -20px; left: 20px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(245,137,31,.06);
}
.case-type-badge {
  display: inline-block;
  font-size: 11px; font-weight: 800;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent-teal);
  background: rgba(0,194,212,.15);
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid rgba(0,194,212,.3);
  margin-bottom: 12px;
  position: relative; z-index: 1;
}
.case-title { font-size: 18px; font-weight: 800; color:var(--white); line-height:1.4; position:relative;z-index:1; }
.case-card-body { padding: 24px 30px 30px; }
.case-info { margin-bottom: 20px; }
.case-info-item {
  display: flex; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.case-info-item:last-child { border-bottom: none; }
.case-info-label { color:var(--text-light); flex-shrink:0; width:60px; }
.case-info-val   { color:var(--text-dark); font-weight:600; }
.case-result {
  background: linear-gradient(135deg,#edfbfc,#d8f6f9);
  border-radius: var(--r-md);
  padding: 16px 20px;
  border-left: 3px solid var(--accent-teal);
}
.case-result-label {
  font-size: 11px; font-weight: 800;
  color: var(--accent-teal); letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 8px;
}
.case-result-text { font-size: 14px; color:var(--text-dark); line-height:1.75; }

/* ─── Stats Banner ──────────────────────────────────────── */
.stats-banner {
  background: var(--grad-dark);
  padding: 80px 0;
  position: relative; overflow: hidden;
}
.stats-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: url('img/stats_banner_bg.png') center/cover no-repeat;
  opacity: .04;
}
/* Glowing line at top */
.stats-banner::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,transparent,var(--accent-teal),transparent);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap: 40px;
  position: relative; z-index: 1;
}
.stat-item { text-align:center; }
.stat-num {
  font-size: 52px; font-weight: 900;
  color: var(--white); line-height: 1;
  font-family: 'Inter',sans-serif;
}
.stat-num .stat-unit { font-size: 26px; color: var(--accent-teal); }
.stat-divider {
  width: 44px; height: 3px;
  background: linear-gradient(90deg,var(--accent-teal),var(--teal-bright));
  border-radius: 2px; margin: 14px auto;
}
.stat-label { font-size: 14px; color:rgba(255,255,255,.5); letter-spacing:1px; }

/* ─── News ──────────────────────────────────────────────── */
.news-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:24px; }
.news-card {
  background: var(--white);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--t);
}
.news-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-md); border-color:rgba(0,194,212,.2); }
.news-card-img-wrap { overflow:hidden; height:196px; }
.news-card-img { width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.news-card:hover .news-card-img { transform:scale(1.06); }
.news-card-body { padding: 26px; }
.news-meta { display:flex; align-items:center; gap:12px; margin-bottom:12px; }
.news-cat {
  font-size: 11px; font-weight: 800;
  letter-spacing: 1px; text-transform: uppercase;
  color: var(--accent-teal);
  background: rgba(0,194,212,.1);
  padding: 3px 10px; border-radius: 10px;
}
.news-date { font-size:12px; color:var(--text-light); }
.news-title { font-size:16px; font-weight:700; color:var(--text-dark); line-height:1.5; margin-bottom:10px; }
.news-title:hover { color:var(--accent-teal); }
.news-excerpt { font-size:13px; color:var(--text-mid); line-height:1.75; }
.news-read-more {
  display:inline-flex; align-items:center; gap:6px;
  margin-top:18px; font-size:13px; font-weight:700;
  color:var(--accent-teal);
}
.news-read-more:hover { gap:12px; }

/* ─── CTA Section ───────────────────────────────────────── */
.cta-section {
  background: var(--grad-dark);
  padding: 100px 0;
  text-align: center;
  position: relative; overflow: hidden;
}
/* Animated ring */
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,194,212,.1) 0%, transparent 65%);
  animation: glowPulse 4s ease-in-out infinite;
}
.cta-section::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,transparent,var(--accent-teal),transparent);
}
.cta-content { position:relative; z-index:1; }
.cta-title { font-size:clamp(28px,4.5vw,46px); color:var(--white); margin-bottom:18px; font-weight:900; letter-spacing:-.5px; }
.cta-sub { font-size:16px; color:rgba(255,255,255,.6); max-width:520px; margin:0 auto 44px; line-height:1.85; }
.cta-buttons { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ─── About Page ────────────────────────────────────────── */
.about-intro { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; }
.about-intro-img {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
}
.about-intro-img::before {
  content: '';
  position: absolute;
  top: -12px; left: -12px; right: 12px; bottom: 12px;
  border: 2px solid rgba(0,194,212,.3);
  border-radius: var(--r-lg);
  z-index: -1;
  animation: borderGlow 3s ease-in-out infinite;
}
.about-intro-img img { width:100%; height:470px; object-fit:cover; }
.about-text p { font-size:15px; color:var(--text-mid); line-height:1.95; margin-bottom:20px; }
.culture-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:20px; margin-top:48px; }
.culture-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 34px 22px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--t);
  position: relative; overflow: hidden;
}
.culture-card::after {
  content: '';
  position: absolute; bottom:0; left:0; right:0;
  height: 3px;
  background: var(--grad-teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--t);
}
.culture-card:hover::after { transform:scaleX(1); }
.culture-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-md); border-color:rgba(0,194,212,.25); }
.culture-emoji { font-size:38px; margin-bottom:16px; display:block; }
.culture-label { font-size:12px; color:var(--text-light); text-transform:uppercase; letter-spacing:2px; margin-bottom:8px; }
.culture-value { font-size:17px; font-weight:800; color:var(--text-dark); }

/* ─── Contact Form ──────────────────────────────────────── */
.contact-info-card {
  background: var(--grad-dark);
  border-radius: var(--r-lg);
  padding: 52px 42px;
  position: relative; overflow: hidden;
  border: 1px solid rgba(0,194,212,.12);
  box-shadow: var(--shadow-lg);
}
.contact-info-card::before {
  content: '';
  position: absolute;
  top: -50px; right: -50px;
  width: 220px; height: 220px;
  background: radial-gradient(circle,rgba(0,194,212,.18),transparent);
  border-radius: 50%;
}
.contact-info-card::after {
  content: '';
  position: absolute;
  bottom: -40px; left: -20px;
  width: 160px; height: 160px;
  background: radial-gradient(circle,rgba(245,137,31,.12),transparent);
  border-radius: 50%;
}
.contact-info-title { font-size:22px; font-weight:800; color:var(--white); margin-bottom:32px; position:relative;z-index:1; }
.contact-item { display:flex; align-items:flex-start; gap:16px; margin-bottom:28px; position:relative;z-index:1; }
.contact-item-icon {
  width: 46px; height: 46px;
  background: rgba(0,194,212,.12);
  border: 1px solid rgba(0,194,212,.28);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
  transition: var(--t);
}
.contact-item:hover .contact-item-icon { background:rgba(0,194,212,.25); border-color:var(--accent-teal); box-shadow:0 0 16px rgba(0,194,212,.2); }
.contact-item-label { font-size:12px; color:rgba(255,255,255,.42); margin-bottom:5px; text-transform:uppercase; letter-spacing:1.5px; }
.contact-item-val { font-size:15px; color:var(--white); font-weight:600; line-height:1.55; }

.form-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: 52px 48px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.form-title { font-size:24px; font-weight:800; color:var(--text-dark); margin-bottom:8px; }
.form-sub   { font-size:14px; color:var(--text-mid); margin-bottom:34px; line-height:1.7; }
.form-group { margin-bottom:22px; }
.form-group label { display:block; font-size:14px; font-weight:700; color:var(--text-dark); margin-bottom:8px; }
.form-group label span { color:var(--warm-orange); }
.form-control {
  width: 100%;
  padding: 13px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  font-size: 14px; color:var(--text-dark);
  font-family: inherit;
  transition: var(--t);
  background: var(--white);
  outline: none;
}
.form-control:focus {
  border-color: var(--accent-teal);
  box-shadow: 0 0 0 4px rgba(0,194,212,.1);
}
textarea.form-control { resize:vertical; min-height:130px; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note { font-size:13px; color:var(--text-light); margin-top:16px; line-height:1.65; }

/* ─── Page Hero (inner pages) ───────────────────────────── */
.page-hero {
  background: var(--grad-dark);
  padding: 152px 0 76px;
  position: relative; overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(0,194,212,.12) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%,black 30%,transparent 100%);
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,transparent,rgba(0,194,212,.35),transparent);
}
.page-hero-inner { position:relative;z-index:1; text-align:center; }
.page-hero-title { font-size:clamp(30px,5vw,54px); color:var(--white); margin-bottom:14px; font-weight:900; letter-spacing:-1px; }
.page-hero-breadcrumb { font-size:14px; color:rgba(255,255,255,.45); }
.page-hero-breadcrumb a { color:rgba(255,255,255,.45); transition:var(--t); }
.page-hero-breadcrumb a:hover { color:var(--accent-teal); }

/* ─── Footer ────────────────────────────────────────────── */
footer {
  background: #04090f;
  color: rgba(255,255,255,.65);
  padding: 72px 0 0;
  position: relative;
}
footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,transparent,rgba(0,194,212,.3),transparent);
}
.footer-inner {
  display: flex;
  flex-direction: column;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1.8fr) repeat(2, minmax(130px, 1fr)) minmax(260px, 1.25fr);
  gap: 36px 40px;
  align-items: start;
  padding-bottom: 52px;
}
.footer-col { min-width: 0; }
.footer-col-contact {
  min-width: 0;
  padding: 20px 22px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-md);
}
.footer-brand .nav-logo {
  margin-bottom: 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  max-width: 100%;
  text-decoration: none;
}
.footer-brand .nav-logo img {
  height: 52px;
  flex-shrink: 0;
}
.footer-brand .nav-logo-text {
  gap: 8px;
  padding-top: 4px;
}
.footer-brand .nav-logo-cn {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.06em;
  line-height: 1.3;
}
.footer-brand .nav-logo-en {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  letter-spacing: 0.03em;
  line-height: 1.45;
  max-width: 300px;
}
.footer-brand .nav-logo-en-line {
  display: block;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255,255,255,.42);
  max-width: 320px;
  margin: 0;
}
.footer-title {
  font-size: 13px; font-weight: 800;
  color: var(--white); margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  letter-spacing: 0.08em;
}
.footer-col-contact .footer-title {
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.92);
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px; color:rgba(255,255,255,.4);
  transition: var(--t);
  display: inline-flex; align-items: center; gap: 0;
}
.footer-links a:hover { color:var(--accent-teal); padding-left:6px; }
.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  align-items: flex-start;
  width: 100%;
}
.footer-contact-item:last-child { margin-bottom: 0; }
.footer-contact-label {
  font-size: 11px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.32);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.footer-contact-val {
  display: block;
  line-height: 0;
  width: 100%;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
  text-decoration: none;
  transition: var(--t);
}
.footer-contact-link {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.5;
}
.footer-contact-link:hover {
  color: var(--accent-teal);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 24px 0 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px 20px;
}
.footer-copy,
.footer-site {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,.3);
}
.footer-site a {
  color: rgba(255,255,255,.42);
  text-decoration: none;
  transition: var(--t);
}
.footer-site a:hover { color: var(--accent-teal); }
.footer-bottom .footer-sep {
  color: rgba(255, 255, 255, 0.15);
  user-select: none;
}

/* ─── Float CTA ─────────────────────────────────────────── */
.float-cta {
  position: fixed;
  right: 28px; bottom: 80px;
  z-index: 999;
  display: flex; flex-direction: column;
  align-items: center; gap: 12px;
}
.float-btn {
  width: 54px; height: 54px;
  border-radius: 50%;
  display: flex; align-items:center; justify-content:center;
  font-size: 22px;
  cursor: pointer;
  transition: var(--t);
  box-shadow: var(--shadow-md);
  border: none; position: relative;
}
.float-btn-main {
  background: var(--grad-orange);
  color: var(--white);
  width: 62px; height: 62px; font-size: 24px;
  box-shadow: var(--shadow-orange);
  animation: glowPulse 3s ease-in-out infinite;
}
.float-btn-main:hover { transform:scale(1.12) rotate(12deg); }
.float-btn-phone { background:var(--grad-teal); color:var(--white); box-shadow:var(--shadow-teal); }
.float-btn-phone:hover { transform:scale(1.1); }
.float-btn-top {
  background: rgba(255,255,255,.9);
  color: var(--text-dark);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.float-btn-top:hover { background:var(--accent-teal); color:var(--white); transform:translateY(-4px); }
.float-tooltip {
  position: absolute; right: 70px;
  background: rgba(7,15,30,.92);
  color: var(--white);
  font-size: 12px; font-weight: 600;
  padding: 7px 14px; border-radius: 8px;
  white-space: nowrap; opacity: 0; pointer-events: none;
  transition: var(--t);
  border: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(8px);
}
.float-btn:hover .float-tooltip { opacity: 1; }

/* ─── Animations (scroll-trigger) ──────────────────────── */
.fade-up {
  opacity: 0; transform: translateY(32px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up-delay-1 { transition-delay:.12s; }
.fade-up-delay-2 { transition-delay:.24s; }
.fade-up-delay-3 { transition-delay:.36s; }
.fade-up-delay-4 { transition-delay:.48s; }

/* ─── Consult Modal ─────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(4,9,16,.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items:center; justify-content:center;
  opacity: 0; pointer-events: none;
  transition: opacity .3s;
}
.modal-overlay.active { opacity:1; pointer-events:all; }
.modal-box {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: 52px 48px;
  max-width: 510px; width: 92%;
  position: relative;
  transform: translateY(24px) scale(.97);
  transition: transform .35s var(--ease);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0,194,212,.12);
}
.modal-overlay.active .modal-box { transform:translateY(0) scale(1); }
.modal-close {
  position: absolute; top: 18px; right: 22px;
  font-size: 22px; background: none; border: none;
  color: var(--text-light); cursor: pointer; line-height: 1;
  width: 32px; height: 32px;
  display: flex; align-items:center; justify-content:center;
  border-radius: 50%; transition: var(--t);
}
.modal-close:hover { background:var(--light-bg); color:var(--text-dark); }
.modal-title { font-size:22px; font-weight:800; color:var(--text-dark); margin-bottom:6px; }
.modal-sub   { font-size:14px; color:var(--text-mid); margin-bottom:28px; line-height:1.7; }

/* ─── Map Placeholder ───────────────────────────────────── */
.map-placeholder {
  width: 100%; height: 340px;
  background: linear-gradient(135deg,#e6f4f8,#cde9f5);
  border-radius: var(--r-lg);
  display: flex; align-items:center; justify-content:center;
  flex-direction: column; gap: 14px;
  color: var(--text-mid); font-size: 16px;
  border: 1.5px dashed var(--border);
  margin-top: 52px;
}

/* ─── Wave Divider (section transition) ─────────────────── */
.wave-divider {
  line-height: 0;
  overflow: hidden;
}
.wave-divider svg { display:block; width:100%; }

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width:1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px 32px;
    padding-bottom: 40px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col-contact { grid-column: 1 / -1; }
  .about-intro  { grid-template-columns:1fr; gap:44px; }
  .contact-section { grid-template-columns:1fr; }
  .form-card { padding:36px 28px; }
}

@media (max-width:768px) {
  .nav-menu {
    display: none;
    position: absolute; top:78px; left:0; right:0;
    flex-direction: column;
    background: rgba(7,15,30,.98);
    backdrop-filter: blur(24px);
    padding: 22px 28px 30px;
    gap: 4px;
    border-top: 1px solid rgba(255,255,255,.06);
  }
  .nav-menu.open { display:flex; }
  .nav-toggle { display:flex; }
  .nav-cta { margin-left:0; width:100%; text-align:center; justify-content:center; }
  .nav-link { padding:13px 16px; border-radius:10px; }

  .hero-stats { gap:28px; }
  .hero-stat-num { font-size:32px; }
  .service-highlights { grid-template-columns:1fr; }
  .sh-item { border-right:none; border-bottom:1px solid var(--border); }
  .sh-item:last-child { border-bottom:none; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 36px;
  }
  .footer-brand,
  .footer-col-contact { grid-column: auto; }
  .footer-brand p { max-width: 100%; }
  .float-cta { right:16px; bottom:60px; }
  .biz-grid, .services-grid, .cases-grid, .news-grid { grid-template-columns:1fr; }
  .form-row { grid-template-columns:1fr; }
  .contact-info-card { padding:32px 24px; }
  .section { padding:76px 0; }
  .adv-grid { grid-template-columns:1fr 1fr; }
  .modal-box { padding:36px 28px; }
}

@media (max-width:480px) {
  .adv-grid    { grid-template-columns:1fr; }
  .culture-grid { grid-template-columns:1fr 1fr; }
  .stats-grid  { grid-template-columns:1fr 1fr; }
  .hero-actions { flex-direction:column; align-items:flex-start; }
  .btn { width:100%; justify-content:center; }
  .float-btn-main { width:54px; height:54px; font-size:22px; }
}

/* ─── Scroll Progress Bar ────────────────────────────────── */
#scrollProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-teal), var(--warm-orange));
  z-index: 9999;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--teal-glow);
}

/* ─── Page Loader ────────────────────────────────────────── */
#pageLoader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--deep-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#pageLoader.loaded {
  opacity: 0;
  visibility: hidden;
}

.loader-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.loader-logo img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  animation: float 2s ease-in-out infinite;
}

.loader-text {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  letter-spacing: 2px;
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  background: var(--grad-teal);
  border-radius: 3px;
  animation: loadingAnim 0.8s ease forwards;
}

@keyframes loadingAnim {
  from { width: 0%; }
  to   { width: 100%; }
}

/* ─── Enhanced Hover States ──────────────────────────────── */
.biz-card,
.adv-card,
.service-card {
  will-change: transform;
}

/* ─── Typing Cursor ──────────────────────────────────────── */
.typing-cursor::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--accent-teal);
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ─── Notification Toast ─────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--deep-blue);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,194,212,0.25);
  z-index: 5000;
  transition: transform 0.4s var(--ease);
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   ─── 12. 极光暗黑模式 (Premium Dark Mode & Theme Toggle) ───
============================================================ */

body.dark-mode {
  --white: #0a101f;
  --light-bg: #060a14;
  --text-dark: #f1f5f9;
  --text-mid: #cbd5e1;
  --text-light: #64748b;
  --border: #1e293b;
  --border-dark: rgba(255, 255, 255, 0.12);
  --grad-card: linear-gradient(145deg, #0f1a2f 0%, #060b15 100%);
  background-color: #070f1e;
  color: #f1f5f9;
}

body.dark-mode .section-alt {
  background-color: #060a14;
}

body.dark-mode .nav-menu {
  background: rgba(10, 16, 31, 0.95);
  border-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .nav-link {
  color: #94a3b8;
}

body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
  color: var(--accent-teal);
}

body.dark-mode .about-intro,
body.dark-mode .team-module,
body.dark-mode .timeline-content,
body.dark-mode .mission-card,
body.dark-mode .case-card,
body.dark-mode .sidebar-card,
body.dark-mode .news-featured,
body.dark-mode .news-list-card,
body.dark-mode .biz-card {
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

body.dark-mode .mission-card,
body.dark-mode .case-card,
body.dark-mode .sidebar-card,
body.dark-mode .news-featured,
body.dark-mode .news-list-card,
body.dark-mode .biz-card {
  background: var(--grad-card);
}

body.dark-mode .mission-value,
body.dark-mode .timeline-title,
body.dark-mode .service-title,
body.dark-mode .case-title,
body.dark-mode .news-featured-title,
body.dark-mode .news-list-title,
body.dark-mode .biz-card-title {
  color: var(--white);
}

body.dark-mode .case-info-item {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .case-info-val {
  color: #f1f5f9;
}

body.dark-mode .case-result,
body.dark-mode .contact-note-box {
  background: linear-gradient(135deg, rgba(0, 194, 212, 0.08), rgba(0, 194, 212, 0.03));
  border-left-color: var(--accent-teal);
}

body.dark-mode .case-result-text,
body.dark-mode .contact-note-box {
  color: #cbd5e1;
}

body.dark-mode .form-panel {
  background: #0f1a2f;
  border-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .form-group input,
body.dark-mode .form-group textarea {
  background: #060a14;
  border-color: rgba(255, 255, 255, 0.12);
  color: #f1f5f9;
}

body.dark-mode .form-group input:focus,
body.dark-mode .form-group textarea:focus {
  border-color: var(--accent-teal);
  box-shadow: 0 0 8px rgba(0, 194, 212, 0.25);
}

/* ─── Theme Toggle Button ───────────────────────────────── */
.theme-toggle-btn {
  background: rgba(0, 184, 212, 0.1);
  border: 1px solid rgba(0, 184, 212, 0.25);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 18px;
  transition: var(--t);
  color: var(--accent-teal);
  font-size: 16px;
  position: relative;
  z-index: 100;
  cursor: pointer;
  outline: none;
}

.theme-toggle-btn:hover {
  background: var(--teal-glow);
  transform: scale(1.08) rotate(15deg);
  box-shadow: 0 0 14px rgba(0, 184, 212, 0.4);
}

body.dark-mode .theme-toggle-btn {
  background: rgba(245, 137, 31, 0.1);
  border-color: rgba(245, 137, 31, 0.25);
  color: var(--warm-orange);
}

body.dark-mode .theme-toggle-btn:hover {
  background: var(--orange-glow);
  box-shadow: 0 0 14px rgba(245, 137, 31, 0.4);
}

@media (max-width: 768px) {
  .theme-toggle-btn {
    margin-right: 10px;
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
}

/* ─── 联系方式图片化样式 ────────────────────────────────── */
.body-contact-img {
  display: block;
  width: auto;
  max-width: 100%;
  pointer-events: none;
  transition: var(--t);
  height: 22px;
}

.body-contact-img-address {
  height: auto;
  max-width: 320px;
  min-height: 44px;
}

.contact-info-panel .body-contact-img,
.contact-info-panel .body-contact-img-address {
  max-width: 100%;
  opacity: 0.95;
}

.footer-contact-img {
  display: block;
  height: 22px;
  width: auto;
  max-width: 100%;
  pointer-events: none;
  opacity: 0.92;
  transition: opacity var(--t), filter var(--t);
}
.footer-contact-img-address {
  height: auto;
  max-height: none;
  width: 100%;
  max-width: 248px;
  min-height: 40px;
  object-fit: contain;
  object-position: left top;
}
.footer-contact-item:hover .footer-contact-img {
  opacity: 1;
}