/* ==========================================================================
   Bitz Net (thebitz.lat) - Pure Native High-Performance CSS Design System
   Zero Heavy JS Frameworks · Instant Sub-Second Load · Dynamic Ambient Background
   ========================================================================== */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Tech Dark Theme Palette */
  --bg-dark: #040817;
  --bg-card: rgba(11, 19, 38, 0.75);
  --bg-card-hover: rgba(18, 30, 60, 0.85);
  --bg-glass: rgba(8, 14, 28, 0.72);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.35);

  --cyan-primary: #00f2fe;
  --blue-primary: #38bdf8;
  --indigo-primary: #6366f1;
  --purple-primary: #8b5cf6;
  --emerald-accent: #10b981;
  --amber-accent: #f59e0b;
  --rose-accent: #f43f5e;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 25px rgba(0, 242, 254, 0.25);
  --shadow-glow-purple: 0 0 25px rgba(139, 92, 246, 0.25);
  --shadow-btn: 0 8px 24px -6px rgba(254, 240, 138, 0.5), 0 0 16px rgba(253, 224, 71, 0.25);

  --container-max: 1240px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: #030712;
  color: var(--text-main);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Pure CSS Dynamic Ambient Background (GPU Accelerated)
   ========================================================================== */
.dynamic-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background-color: #030712;
  background-image: 
    linear-gradient(180deg, rgba(3, 7, 18, 0.8) 0%, rgba(3, 7, 18, 0.52) 32%, rgba(3, 7, 18, 0.72) 70%, rgba(3, 7, 18, 0.95) 100%),
    url("assets/real-chamomile-field-bg.jpg");
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
  pointer-events: none;
  animation: fieldBreathe 36s ease-in-out infinite alternate;
}

@keyframes fieldBreathe {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.04);
  }
}

/* Top Spotlight Aurora Glow (Chamomile Yellow & Cyber Indigo Blend) */
.dynamic-background::before {
  content: "";
  position: absolute;
  top: -15vh;
  left: 5vw;
  width: 90vw;
  height: 70vh;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(254, 240, 138, 0.22) 0%, rgba(56, 189, 248, 0.12) 40%, rgba(99, 102, 241, 0.06) 75%, transparent 100%);
  filter: blur(55px);
  animation: techPulse 9s ease-in-out infinite alternate;
  will-change: opacity, transform;
}

/* Diagonal Laser Sweeping Beam */
.dynamic-background::after {
  content: "";
  position: absolute;
  inset: -50%;
  background: linear-gradient(125deg, transparent 40%, rgba(0, 242, 254, 0.04) 48%, rgba(56, 189, 248, 0.1) 52%, transparent 60%);
  transform: rotate(-12deg);
  animation: beamSweep 18s ease-in-out infinite;
  pointer-events: none;
}

/* Cyber Grid Lines */
.dynamic-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 242, 254, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(56, 189, 248, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 35%, black 45%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 35%, black 45%, transparent 85%);
}

/* Floating Ambient Glowing Orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}

.orb-1 {
  top: 15%;
  left: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.22) 0%, rgba(56, 189, 248, 0.08) 50%, transparent 75%);
  filter: blur(90px);
  animation: floatOrb1 24s ease-in-out infinite alternate;
}

.orb-2 {
  top: 45%;
  right: 5%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.2) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 75%);
  filter: blur(95px);
  animation: floatOrb2 26s ease-in-out infinite alternate;
}

.orb-3 {
  bottom: 5%;
  left: 25%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.18) 0%, rgba(14, 165, 233, 0.06) 55%, transparent 75%);
  filter: blur(100px);
  animation: floatOrb3 22s ease-in-out infinite alternate;
}

@keyframes techPulse {
  0% {
    opacity: 0.75;
    transform: scale(0.96) translateY(0);
  }
  100% {
    opacity: 1;
    transform: scale(1.05) translateY(15px);
  }
}

@keyframes beamSweep {
  0% {
    transform: translateY(-40%) rotate(-12deg);
  }
  50% {
    transform: translateY(40%) rotate(-12deg);
  }
  100% {
    transform: translateY(-40%) rotate(-12deg);
  }
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(80px, 60px, 0) scale(1.15); }
  100% { transform: translate3d(-40px, 80px, 0) scale(0.92); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-100px, -70px, 0) scale(1.12); }
  100% { transform: translate3d(50px, -50px, 0) scale(0.95); }
}

@keyframes floatOrb3 {
  0% { transform: translate3d(0, 0, 0) scale(0.95); }
  50% { transform: translate3d(60px, -80px, 0) scale(1.18); }
  100% { transform: translate3d(-50px, 40px, 0) scale(1); }
}

/* ==========================================================================
   High-Fidelity Dynamic Chamomile (洋甘菊) Botanical Aesthetic System
   Layered Petals · 3D Receptacle Dome · Falling Petals & Golden Pollen Dust
   ========================================================================== */
.chamomile-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
  perspective: 1000px;
}

.chamomile-item {
  position: absolute;
  pointer-events: none;
  will-change: transform;
}

.chamomile-svg {
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  filter: drop-shadow(0 8px 26px rgba(0, 0, 0, 0.58)) drop-shadow(0 0 18px rgba(254, 240, 138, 0.42));
}

/* Real High-Resolution Photographic Chamomile Cutouts */
.chamomile-real-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
  filter: drop-shadow(0 10px 28px rgba(0, 0, 0, 0.68)) drop-shadow(0 0 20px rgba(254, 240, 138, 0.45));
  will-change: transform;
}

/* Feathery Chamomile Foliage in Corners (Matricaria Leaves) */
.chamomile-foliage {
  position: absolute;
  pointer-events: none;
  z-index: 1;
  opacity: 0.55;
  will-change: transform;
}

.fol-left {
  width: 200px;
  height: 300px;
  bottom: 0;
  left: 0;
  transform-origin: bottom left;
  animation: foliageSway 18s ease-in-out infinite alternate;
}

.fol-right {
  width: 180px;
  height: 270px;
  bottom: 0;
  right: 0;
  transform-origin: bottom right;
  animation: foliageSway 22s ease-in-out infinite alternate-reverse;
}

.chamomile-foliage-svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.4)) drop-shadow(0 0 10px rgba(101, 163, 13, 0.2));
}

@keyframes foliageSway {
  0% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(3deg) scale(1.02);
  }
  100% {
    transform: rotate(-2.5deg) scale(0.98);
  }
}

/* Golden Pollen Specks (金色花粉微光微粒) */
.c-pollen {
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 10%, #fef08a 60%, #facc15 100%);
  box-shadow: 0 0 8px #fef08a, 0 0 18px #facc15;
}

/* Dreamy Golden Bokeh Circles (唯美虚化金色光斑) */
.c-bokeh {
  border-radius: 50%;
  background: radial-gradient(circle, rgba(254, 240, 138, 0.3) 0%, rgba(250, 204, 21, 0.1) 45%, transparent 70%);
  filter: blur(14px);
}

/* Flower Placements & Natural Breeze Floats (真实洋甘菊花海空间层次) */
/* 近景主力花朵 */
.c-1 { width: 120px; height: 120px; top: 6%; left: 4%; opacity: 0.96; animation: chamomileFloat1 24s ease-in-out infinite alternate; }
.c-2 { width: 105px; height: 105px; top: 18%; right: 5%; opacity: 0.94; animation: chamomileFloat2 28s ease-in-out infinite alternate; }
.c-3 { width: 138px; height: 138px; top: 48%; left: 2%; opacity: 0.92; animation: chamomileFloat3 32s ease-in-out infinite alternate; }
.c-4 { width: 125px; height: 125px; top: 72%; right: 5%; opacity: 0.94; animation: chamomileFloat1 26s ease-in-out infinite alternate-reverse; }
.c-6 { width: 118px; height: 118px; top: 88%; left: 18%; opacity: 0.92; animation: chamomileFloat3 27s ease-in-out infinite alternate; }

/* 中景摇曳花丛 */
.c-5 { width: 82px; height: 82px; top: 34%; left: 14%; opacity: 0.86; animation: chamomileFloat2 30s ease-in-out infinite alternate; }
.c-7 { width: 88px; height: 88px; top: 40%; right: 16%; opacity: 0.88; animation: chamomileFloat1 29s ease-in-out infinite alternate; }
.c-8 { width: 92px; height: 92px; top: 62%; left: 8%; opacity: 0.85; animation: chamomileFloat2 25s ease-in-out infinite alternate 2s; }
.c-9 { width: 85px; height: 85px; top: 58%; right: 12%; opacity: 0.84; animation: chamomileFloat3 31s ease-in-out infinite alternate 1s; }
.c-10 { width: 96px; height: 96px; top: 85%; right: 14%; opacity: 0.88; animation: chamomileFloat1 27s ease-in-out infinite alternate 3s; }

/* 远景景深微花 (烘托无垠花海纵深) */
.c-11 { width: 52px; height: 52px; top: 12%; left: 22%; opacity: 0.65; filter: blur(0.6px); animation: chamomileFloat3 34s ease-in-out infinite alternate 4s; }
.c-12 { width: 58px; height: 58px; top: 15%; right: 26%; opacity: 0.68; filter: blur(0.5px); animation: chamomileFloat1 30s ease-in-out infinite alternate 5s; }
.c-13 { width: 48px; height: 48px; top: 30%; left: 32%; opacity: 0.6; filter: blur(0.8px); animation: chamomileFloat2 36s ease-in-out infinite alternate 2s; }
.c-14 { width: 62px; height: 62px; top: 68%; left: 28%; opacity: 0.7; filter: blur(0.5px); animation: chamomileFloat3 29s ease-in-out infinite alternate 3s; }
.c-15 { width: 55px; height: 55px; top: 76%; right: 30%; opacity: 0.65; filter: blur(0.6px); animation: chamomileFloat1 33s ease-in-out infinite alternate 1s; }
.c-16 { width: 50px; height: 50px; top: 45%; left: 24%; opacity: 0.62; filter: blur(0.7px); animation: chamomileFloat2 32s ease-in-out infinite alternate 6s; }

/* Falling Chamomile Petals (漫天飞舞真实花瓣雨) */
.p-1 { width: 34px; height: 54px; top: -10%; left: 8%; opacity: 0.92; animation: chamomileFall1 16s linear infinite; }
.p-2 { width: 28px; height: 46px; top: -10%; left: 26%; opacity: 0.88; animation: chamomileFall2 20s linear infinite 2s; }
.p-3 { width: 38px; height: 60px; top: -10%; left: 45%; opacity: 0.92; animation: chamomileFall3 18s linear infinite 1s; }
.p-4 { width: 30px; height: 48px; top: -10%; left: 64%; opacity: 0.88; animation: chamomileFall1 22s linear infinite 5s; }
.p-5 { width: 32px; height: 52px; top: -10%; left: 82%; opacity: 0.9; animation: chamomileFall2 19s linear infinite 7s; }
.p-6 { width: 26px; height: 42px; top: -10%; left: 93%; opacity: 0.88; animation: chamomileFall3 21s linear infinite 9s; }
.p-7 { width: 35px; height: 56px; top: -10%; left: 16%; opacity: 0.9; animation: chamomileFall1 17s linear infinite 4s; }
.p-8 { width: 29px; height: 48px; top: -10%; left: 36%; opacity: 0.86; animation: chamomileFall2 23s linear infinite 6s; }
.p-9 { width: 33px; height: 54px; top: -10%; left: 54%; opacity: 0.88; animation: chamomileFall3 19s linear infinite 8s; }
.p-10 { width: 27px; height: 44px; top: -10%; left: 74%; opacity: 0.85; animation: chamomileFall1 21s linear infinite 11s; }

/* Golden Pollen & Bokeh Placements (金色微尘与虚化光晕) */
.pol-1 { width: 5px; height: 5px; top: 15%; left: 25%; opacity: 0.75; animation: pollenFloat 9s ease-in-out infinite alternate; }
.pol-2 { width: 4px; height: 4px; top: 35%; right: 28%; opacity: 0.8; animation: pollenFloat 12s ease-in-out infinite alternate 2s; }
.pol-3 { width: 6px; height: 6px; top: 60%; left: 32%; opacity: 0.85; animation: pollenFloat 10s ease-in-out infinite alternate 4s; }
.pol-4 { width: 4px; height: 4px; top: 80%; right: 35%; opacity: 0.75; animation: pollenFloat 11s ease-in-out infinite alternate 1s; }
.pol-5 { width: 5px; height: 5px; top: 28%; left: 55%; opacity: 0.7; animation: pollenFloat 13s ease-in-out infinite alternate 3s; }
.pol-6 { width: 6px; height: 6px; top: 48%; left: 18%; opacity: 0.8; animation: pollenFloat 11s ease-in-out infinite alternate 2s; }
.pol-7 { width: 4px; height: 4px; top: 72%; right: 22%; opacity: 0.75; animation: pollenFloat 14s ease-in-out infinite alternate 4s; }
.pol-8 { width: 5px; height: 5px; top: 88%; left: 42%; opacity: 0.8; animation: pollenFloat 10s ease-in-out infinite alternate 1s; }

.bok-1 { width: 90px; height: 90px; top: 12%; left: 12%; opacity: 0.35; animation: bokehPulse 14s ease-in-out infinite alternate; }
.bok-2 { width: 110px; height: 110px; top: 65%; right: 15%; opacity: 0.3; animation: bokehPulse 16s ease-in-out infinite alternate 3s; }
.bok-3 { width: 80px; height: 80px; top: 42%; left: 45%; opacity: 0.25; animation: bokehPulse 12s ease-in-out infinite alternate 5s; }
.bok-4 { width: 120px; height: 120px; top: 25%; right: 38%; opacity: 0.22; animation: bokehPulse 15s ease-in-out infinite alternate 2s; }

/* Enhanced Natural 3D Breeze Keyframes */
@keyframes chamomileFloat1 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
  }
  50% {
    transform: translate3d(40px, 30px, 0) rotate(35deg) scale(1.06);
  }
  100% {
    transform: translate3d(-30px, 45px, 0) rotate(70deg) scale(0.96);
  }
}

@keyframes chamomileFloat2 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg) scale(0.97);
  }
  50% {
    transform: translate3d(-42px, -26px, 0) rotate(-45deg) scale(1.08);
  }
  100% {
    transform: translate3d(35px, 32px, 0) rotate(-90deg) scale(1);
  }
}

@keyframes chamomileFloat3 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
  }
  50% {
    transform: translate3d(30px, -38px, 0) rotate(28deg) scale(1.09);
  }
  100% {
    transform: translate3d(-35px, 24px, 0) rotate(55deg) scale(0.95);
  }
}

@keyframes pollenFloat {
  0% {
    transform: translate3d(0, 0, 0) scale(0.8);
    opacity: 0.45;
  }
  50% {
    transform: translate3d(25px, -35px, 0) scale(1.25);
    opacity: 0.95;
  }
  100% {
    transform: translate3d(-20px, 25px, 0) scale(0.9);
    opacity: 0.55;
  }
}

@keyframes bokehPulse {
  0% {
    transform: scale(0.9) translate3d(0, 0, 0);
    opacity: 0.25;
  }
  50% {
    transform: scale(1.15) translate3d(20px, 15px, 0);
    opacity: 0.45;
  }
  100% {
    transform: scale(0.95) translate3d(-15px, 10px, 0);
    opacity: 0.3;
  }
}

/* Keyframes for Falling & Tumbling Chamomile Petals */
@keyframes chamomileFall1 {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg) scale(0.9);
    opacity: 0;
  }
  10% {
    opacity: 0.55;
  }
  50% {
    transform: translate3d(60px, 55vh, 0) rotate(180deg) scale(1.05);
  }
  90% {
    opacity: 0.55;
  }
  100% {
    transform: translate3d(120px, 115vh, 0) rotate(360deg) scale(0.85);
    opacity: 0;
  }
}

@keyframes chamomileFall2 {
  0% {
    transform: translate3d(0, 0, 0) rotate(45deg) scale(1);
    opacity: 0;
  }
  12% {
    opacity: 0.48;
  }
  50% {
    transform: translate3d(-70px, 50vh, 0) rotate(-135deg) scale(1.1);
  }
  88% {
    opacity: 0.48;
  }
  100% {
    transform: translate3d(-130px, 115vh, 0) rotate(-315deg) scale(0.9);
    opacity: 0;
  }
}

@keyframes chamomileFall3 {
  0% {
    transform: translate3d(0, 0, 0) rotate(-30deg) scale(0.95);
    opacity: 0;
  }
  15% {
    opacity: 0.52;
  }
  50% {
    transform: translate3d(50px, 52vh, 0) rotate(150deg) scale(1.15);
  }
  85% {
    opacity: 0.52;
  }
  100% {
    transform: translate3d(90px, 115vh, 0) rotate(330deg) scale(0.9);
    opacity: 0;
  }
}

/* ==========================================================================
   Layout & Container Utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: 90px;
  padding-bottom: 90px;
  position: relative;
  z-index: 2;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px auto;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.28);
  color: var(--cyan-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--emerald-accent);
  box-shadow: 0 0 10px var(--emerald-accent);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}

.text-gradient {
  background: linear-gradient(135deg, #00f2fe 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Navigation Bar (Header)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo svg, .site-logo img {
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan-primary);
  box-shadow: 0 0 8px var(--cyan-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border-radius: var(--radius-sm);
  color: var(--text-main);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  transition: transform var(--transition-fast);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #fffdf2 0%, #fef9c3 35%, #fef08a 70%, #fde047 100%);
  color: #030712;
  box-shadow: 0 8px 24px -6px rgba(254, 240, 138, 0.55), 0 0 16px rgba(253, 224, 71, 0.28);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #ffffff 0%, #fffde7 30%, #fef9c3 65%, #fef08a 100%);
  box-shadow: 0 12px 28px -6px rgba(254, 240, 138, 0.75), 0 0 24px rgba(253, 224, 71, 0.5);
  color: #000000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
}

.btn-lg {
  padding: 15px 34px;
  font-size: 16px;
  border-radius: var(--radius-full);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: 80px;
  padding-bottom: 90px;
  text-align: center;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(34px, 5.5vw, 58px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 38px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 13.5px;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.hero-guarantee-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-guarantee-item svg {
  width: 16px;
  height: 16px;
  color: var(--cyan-primary);
}

/* Hero Stats Bar */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 64px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #fef08a, transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(254, 240, 138, 0.35);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.55), 0 0 20px rgba(254, 240, 138, 0.12);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(254, 240, 138, 0.1);
  border: 1px solid rgba(253, 224, 71, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fef08a;
  box-shadow: 0 0 16px rgba(254, 240, 138, 0.15);
  margin-bottom: 22px;
  transition: all var(--transition-fast);
}

.feature-card:hover .feature-icon-wrap {
  background: linear-gradient(135deg, rgba(254, 240, 138, 0.25) 0%, rgba(253, 224, 71, 0.35) 100%);
  border-color: #fde047;
  color: #ffffff;
  box-shadow: 0 0 20px rgba(254, 240, 138, 0.35);
}

.feature-icon-wrap svg {
  width: 26px;
  height: 26px;
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.feature-desc {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Real-Time Node Speed Table Section
   ========================================================================== */
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nodes-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 18px 24px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid var(--border-subtle);
}

.nodes-table td {
  padding: 18px 24px;
  font-size: 14.5px;
  border-bottom: 1px solid var(--border-subtle);
}

.nodes-table tr:last-child td {
  border-bottom: none;
}

.nodes-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.node-region-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.flag-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 22px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--cyan-primary);
}

.status-badge-ok {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--emerald-accent);
  border-radius: var(--radius-full);
  font-size: 12.5px;
  font-weight: 600;
}

/* ==========================================================================
   PRICING SECTION ("所有价格要同排" — All 3 Tiers Side-by-Side in One Row)
   ========================================================================== */
.pricing-section {
  background: radial-gradient(circle at 50% 50%, rgba(14, 25, 52, 0.35) 0%, transparent 80%);
}

.pricing-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  backdrop-filter: blur(14px);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(20, 35, 70, 0.85) 0%, rgba(10, 18, 38, 0.9) 100%);
  border: 1.5px solid var(--cyan-primary);
  box-shadow: 0 12px 40px -10px rgba(0, 242, 254, 0.28);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 16px 45px -8px rgba(0, 242, 254, 0.45);
}

.pricing-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #00f2fe 0%, #38bdf8 100%);
  color: #030712;
  padding: 5px 18px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 14px rgba(0, 242, 254, 0.4);
  white-space: nowrap;
}

.pricing-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 24px;
  text-align: center;
}

.plan-name {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-main);
}

.plan-tagline {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.pricing-amount-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-currency {
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan-primary);
}

.price-number {
  font-size: 50px;
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
  letter-spacing: -1px;
}

.price-period {
  font-size: 14.5px;
  color: var(--text-muted);
  font-weight: 500;
}

.price-sub-calc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--cyan-primary);
  font-weight: 600;
}

.pricing-features-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 32px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  color: var(--text-main);
}

.pricing-feature-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--cyan-primary);
}

.pricing-feature-item.muted {
  color: var(--text-dim);
}

.pricing-feature-item.muted svg {
  color: var(--text-dim);
}

.pricing-cta-wrap {
  margin-top: auto;
}

.pricing-notice {
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
  margin-top: 12px;
}

/* ==========================================================================
   Articles Section (Cluster & In-Depth Content)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: rgba(254, 240, 138, 0.35);
  box-shadow: var(--shadow-card);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.article-category {
  padding: 3px 10px;
  background: rgba(254, 240, 138, 0.1);
  border: 1px solid rgba(253, 224, 71, 0.3);
  color: #fef08a;
  border-radius: var(--radius-full);
  font-size: 11.5px;
  font-weight: 600;
}

.article-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-main);
}

.article-title a:hover {
  color: #fef08a;
}

.article-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: #fef08a;
}

.article-link:hover {
  color: #ffffff;
}

.article-link svg {
  width: 15px;
  height: 15px;
  transition: transform var(--transition-fast);
}

.article-link:hover svg {
  transform: translateX(4px);
}

/* ==========================================================================
   User Reviews & Testimonials Section (用户评价)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow-card);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.user-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f2fe 0%, #6366f1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #030712;
  font-size: 17px;
  flex-shrink: 0;
}

.user-info h4 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.user-role {
  font-size: 12.5px;
  color: var(--text-dim);
}

.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 14px;
  color: #fbbf24;
}

.review-stars svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.review-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}

.review-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}

.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--emerald-accent);
  font-weight: 600;
}

.verified-badge svg {
  width: 13px;
  height: 13px;
}

/* ==========================================================================
   FAQ Section (Native HTML5 Details & Summary)
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(254, 240, 138, 0.35);
}

.faq-item[open] {
  border-color: rgba(254, 240, 138, 0.45);
  background: rgba(16, 26, 52, 0.85);
  box-shadow: 0 4px 20px -4px rgba(254, 240, 138, 0.12);
}

.faq-question {
  padding: 22px 26px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: #fef08a;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 26px 24px 26px;
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid transparent;
}

.faq-item[open] .faq-answer {
  border-top-color: rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}

/* ==========================================================================
   External Links & Outbound Tools Section (外链与工具导航)
   ========================================================================== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition-fast);
}

.tool-card:hover {
  border-color: rgba(254, 240, 138, 0.35);
  transform: translateY(-3px);
  background: rgba(18, 30, 60, 0.85);
}

.tool-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(254, 240, 138, 0.1);
  border: 1px solid rgba(253, 224, 71, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fef08a;
  flex-shrink: 0;
}

.tool-icon svg {
  width: 20px;
  height: 20px;
}

.tool-info h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 2px;
  color: var(--text-main);
}

.tool-info p {
  font-size: 12px;
  color: var(--text-dim);
}

/* ==========================================================================
   Single Article Detail Page Styles
   ========================================================================== */
.article-page-wrap {
  padding-top: 48px;
  padding-bottom: 90px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: #fef08a;
}

.breadcrumbs-sep {
  opacity: 0.5;
}

.article-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 32px;
}

.article-page-title {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.article-page-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-body-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

.article-main-content {
  font-size: 16px;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-main-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
  letter-spacing: -0.3px;
}

.article-main-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: #e2e8f0;
  margin-top: 32px;
  margin-bottom: 16px;
}

.article-main-content p {
  margin-bottom: 22px;
}

.article-main-content ul, .article-main-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-main-content ul {
  list-style: disc;
}

.article-main-content ol {
  list-style: decimal;
}

.article-main-content li {
  margin-bottom: 10px;
}

.article-main-content strong {
  color: #ffffff;
}

.article-alert {
  background: rgba(14, 25, 48, 0.8);
  border-left: 4px solid #fef08a;
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin: 30px 0;
  font-size: 15px;
}

.article-alert.tip {
  border-left-color: var(--emerald-accent);
  background: rgba(6, 40, 30, 0.5);
}

.article-alert.warn {
  border-left-color: var(--amber-accent);
  background: rgba(45, 30, 10, 0.5);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14.5px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-table th {
  background: rgba(255, 255, 255, 0.05);
  padding: 14px 18px;
  font-weight: 700;
  color: #ffffff;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(14, 25, 52, 0.9) 0%, rgba(20, 38, 78, 0.9) 100%);
  border: 1.5px solid rgba(254, 240, 138, 0.45);
  border-radius: var(--radius-lg);
  padding: 34px;
  text-align: center;
  margin: 44px 0;
  box-shadow: 0 0 25px rgba(254, 240, 138, 0.15);
}

.article-cta-title {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-desc {
  font-size: 14.5px;
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

.article-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  color: #ffffff;
  border-left: 3px solid #fef08a;
  padding-left: 10px;
}

.sidebar-toc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
}

.sidebar-toc-list a {
  color: var(--text-muted);
}

.sidebar-toc-list a:hover {
  color: #fef08a;
}

.sidebar-articles-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sidebar-article-item a {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  line-height: 1.45;
}

.sidebar-article-item a:hover {
  color: #fef08a;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #02040b;
  border-top: 1px solid var(--border-subtle);
  padding-top: 70px;
  padding-bottom: 40px;
  margin-top: 60px;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 16px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-heading {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 13.5px;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--cyan-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 14px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-body-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 900px) {
  /* Pricing row stacks on small screens for comfortable viewing */
  .pricing-row {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nodes-table th, .nodes-table td {
    padding: 12px 14px;
    font-size: 13px;
  }

  .table-wrap {
    overflow-x: auto;
  }
}