/* ==========================================================================
   夜煞云NightFuryX Design System
   Theme: Miro Infinite Canvas
   Style: Friendly, Modern, Minimal, Canvas Grid, Sticky Notes, Soft Colors
   ========================================================================== */

:root {
  /* Miro Infinite Canvas Palette */
  --bg-canvas: #fafafc;
  --bg-grid-dot: rgba(0, 0, 0, 0.08);
  
  --miro-blue: #4262ff;
  --miro-blue-hover: #2b45e3;
  --miro-dark: #050038;
  --miro-text: #18191b;
  --miro-muted: #5e626e;
  --miro-border: #e6e8ec;

  /* Sticky Note Pastel Palette */
  --note-yellow: #fff3ad;
  --note-yellow-border: #f3e488;
  --note-mint: #d2f8d4;
  --note-mint-border: #b8ebd8;
  --note-pink: #ffd6e8;
  --note-pink-border: #f8bada;
  --note-cyan: #cbf3f0;
  --note-cyan-border: #a1e8e4;
  --note-purple: #e7e0ff;
  --note-purple-border: #cfc2ff;
  --note-orange: #ffe5d9;
  --note-orange-border: #ffd0bb;

  /* Card & UI Tokens */
  --card-bg: #ffffff;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-soft: 0 8px 30px rgba(5, 0, 56, 0.06), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 16px 40px rgba(5, 0, 56, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-sticky: 0 12px 24px rgba(0, 0, 0, 0.07);

  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1240px;
}

/* Reset & Infinite Canvas Background */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-canvas);
  color: var(--miro-text);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background-image: radial-gradient(var(--bg-grid-dot) 1.2px, transparent 1.2px);
  background-size: 28px 28px;
  background-position: 0 0;
  min-height: 100vh;
}

a {
  color: var(--miro-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--miro-blue-hover);
  text-decoration: underline;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.2;
  color: var(--miro-dark);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.8vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.55rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; color: var(--miro-muted); }
p:last-child { margin-bottom: 0; }

.gradient-text {
  background: linear-gradient(135deg, #050038 0%, #4262ff 50%, #9b51e0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Common Layout Sections */
.section {
  padding: 5rem 0;
  position: relative;
}

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1px solid var(--miro-border);
  color: var(--miro-dark);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--miro-muted);
  margin-top: 0.75rem;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 1.8rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none !important;
  white-space: nowrap;
}

.btn-primary {
  background: var(--miro-blue);
  color: #ffffff !important;
  box-shadow: 0 6px 20px rgba(66, 98, 255, 0.3);
}

.btn-primary:hover {
  background: var(--miro-blue-hover);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 28px rgba(66, 98, 255, 0.4);
}

.btn-secondary {
  background: #ffffff;
  color: var(--miro-dark);
  border: 1.5px solid var(--miro-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  border-color: var(--miro-dark);
  background: #f4f5f8;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1.1rem 2.4rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(250, 250, 252, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--miro-border);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--miro-dark);
  text-decoration: none !important;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--miro-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(66, 98, 255, 0.3);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--miro-text);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  text-decoration: none !important;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
}

.nav-link:hover {
  color: var(--miro-blue);
  background: rgba(66, 98, 255, 0.08);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--miro-dark);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Miro Floating Cursor Badges */
.miro-cursor {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  z-index: 10;
  pointer-events: none;
  animation: floatBounce 4s ease-in-out infinite alternate;
}

.miro-cursor-yellow { background: #e09f00; }
.miro-cursor-blue { background: var(--miro-blue); }
.miro-cursor-pink { background: #e63946; }
.miro-cursor-purple { background: #7209b7; }

@keyframes floatBounce {
  0% { transform: translateY(0px) rotate(-1deg); }
  100% { transform: translateY(-10px) rotate(2deg); }
}

/* Hero Section */
.hero {
  padding-top: 9.5rem;
  padding-bottom: 5.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
}

.hero-title {
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--miro-muted);
  max-width: 780px;
  margin: 0 auto 2.5rem auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Hero Sticky Notes Canvas Grid */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 980px;
  margin: 3.5rem auto 0 auto;
}

.sticky-stat-note {
  background: var(--note-yellow);
  border: 1px solid var(--note-yellow-border);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sticky);
  transform: rotate(-1.5deg);
  transition: var(--transition);
}

.sticky-stat-note:nth-child(2) {
  background: var(--note-mint);
  border-color: var(--note-mint-border);
  transform: rotate(1deg);
}

.sticky-stat-note:nth-child(3) {
  background: var(--note-pink);
  border-color: var(--note-pink-border);
  transform: rotate(-1deg);
}

.sticky-stat-note:nth-child(4) {
  background: var(--note-cyan);
  border-color: var(--note-cyan-border);
  transform: rotate(2deg);
}

.sticky-stat-note:hover {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--miro-dark);
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--miro-text);
  margin-top: 0.25rem;
}

/* Canvas White Cards */
.canvas-card {
  background: var(--card-bg);
  border: 1.5px solid var(--miro-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
  position: relative;
}

.canvas-card:hover {
  border-color: var(--miro-blue);
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* Features Section (Sticky Notes Grid) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.sticky-feature-card {
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sticky);
  transition: var(--transition);
  border: 1.5px solid transparent;
}

.sticky-feature-card:nth-child(1) { background: var(--note-yellow); border-color: var(--note-yellow-border); transform: rotate(-0.8deg); }
.sticky-feature-card:nth-child(2) { background: var(--note-mint); border-color: var(--note-mint-border); transform: rotate(1deg); }
.sticky-feature-card:nth-child(3) { background: var(--note-cyan); border-color: var(--note-cyan-border); transform: rotate(-1.2deg); }
.sticky-feature-card:nth-child(4) { background: var(--note-purple); border-color: var(--note-purple-border); transform: rotate(0.8deg); }
.sticky-feature-card:nth-child(5) { background: var(--note-pink); border-color: var(--note-pink-border); transform: rotate(-1deg); }
.sticky-feature-card:nth-child(6) { background: var(--note-orange); border-color: var(--note-orange-border); transform: rotate(1.2deg); }

.sticky-feature-card:hover {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--miro-blue);
}

.feature-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--miro-dark);
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card.popular {
  border: 2.5px solid var(--miro-blue);
  box-shadow: var(--shadow-hover);
  background: #ffffff;
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--miro-blue);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.35rem 1.1rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(66, 98, 255, 0.3);
}

.pricing-header {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1.5px dashed var(--miro-border);
  margin-bottom: 1.5rem;
}

.pricing-price {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--miro-dark);
  margin: 0.75rem 0 0.25rem 0;
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--miro-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
  color: var(--miro-text);
  font-weight: 500;
}

.pricing-features svg {
  color: #10b981;
  flex-shrink: 0;
}

/* Testimonials Section */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.testimonial-card {
  background: #ffffff;
  border: 1.5px solid var(--miro-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 4rem;
  color: rgba(66, 98, 255, 0.1);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--note-purple);
  border: 2px solid var(--note-purple-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--miro-dark);
  font-size: 1.1rem;
}

.user-info h4 {
  font-size: 1.05rem;
  color: var(--miro-dark);
}

.user-info span {
  font-size: 0.85rem;
  color: var(--miro-muted);
}

.rating {
  color: #f59e0b;
  margin-bottom: 0.75rem;
}

/* FAQ Section */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1.5px solid var(--miro-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.75rem;
  background: none;
  border: none;
  text-align: left;
  color: var(--miro-dark);
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--miro-blue);
}

.faq-item.active {
  border-color: var(--miro-blue);
  box-shadow: var(--shadow-soft);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.75rem;
  color: var(--miro-muted);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.75rem 1.35rem 1.75rem;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* Latest Guides Section (Miro Sticky Cards) */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.guide-card {
  display: flex;
  flex-direction: column;
  text-decoration: none !important;
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sticky);
  transition: var(--transition);
  border: 1.5px solid transparent;
}

.guide-card:nth-child(1) { background: var(--note-yellow); border-color: var(--note-yellow-border); transform: rotate(-1deg); }
.guide-card:nth-child(2) { background: var(--note-mint); border-color: var(--note-mint-border); transform: rotate(1.2deg); }
.guide-card:nth-child(3) { background: var(--note-pink); border-color: var(--note-pink-border); transform: rotate(-0.8deg); }
.guide-card:nth-child(4) { background: var(--note-cyan); border-color: var(--note-cyan-border); transform: rotate(1deg); }
.guide-card:nth-child(5) { background: var(--note-purple); border-color: var(--note-purple-border); transform: rotate(-1.2deg); }
.guide-card:nth-child(6) { background: var(--note-orange); border-color: var(--note-orange-border); transform: rotate(0.9deg); }

.guide-card:hover {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.guide-tag {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  background: #ffffff;
  color: var(--miro-dark);
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 0.85rem;
  width: fit-content;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

.guide-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--miro-dark);
}

.guide-excerpt {
  font-size: 0.95rem;
  color: var(--miro-text);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.guide-link-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--miro-blue);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Floating Sticky CTA Bar */
.floating-cta {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  z-index: 99;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 2px solid var(--miro-blue);
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 0 12px 36px rgba(66, 98, 255, 0.2);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.floating-cta.visible {
  transform: translateX(-50%) translateY(0);
}

.floating-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--miro-dark);
}

.floating-text span {
  color: var(--miro-blue);
}

/* Footer Section */
.site-footer {
  background: #ffffff;
  border-top: 1.5px solid var(--miro-border);
  padding: 4.5rem 0 2.5rem 0;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-desc {
  color: var(--miro-muted);
  margin-top: 1rem;
  max-width: 330px;
}

.footer-title {
  font-size: 1.05rem;
  color: var(--miro-dark);
  margin-bottom: 1.25rem;
  font-weight: 800;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--miro-muted);
  text-decoration: none !important;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--miro-blue);
}

.footer-bottom {
  border-top: 1.5px solid var(--miro-border);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--miro-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Dedicated Content & Article Styles */
.page-header {
  padding-top: 8.5rem;
  padding-bottom: 3.5rem;
  background: #ffffff;
  border-bottom: 1.5px solid var(--miro-border);
  text-align: center;
}

.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 6rem 1.5rem;
}

.article-content {
  background: #ffffff;
  border: 1.5px solid var(--miro-border);
  border-radius: var(--radius-md);
  padding: 3rem;
  line-height: 1.85;
  box-shadow: var(--shadow-soft);
}

.article-content h1 { font-size: 2.2rem; margin-bottom: 1.5rem; color: var(--miro-dark); }
.article-content h2 { font-size: 1.65rem; margin: 2.25rem 0 1rem 0; border-bottom: 2px solid var(--miro-border); padding-bottom: 0.5rem; color: var(--miro-blue); }
.article-content h3 { font-size: 1.3rem; margin: 1.75rem 0 0.75rem 0; color: var(--miro-dark); }
.article-content p { margin-bottom: 1.25rem; color: var(--miro-text); }
.article-content ul, .article-content ol { margin: 1rem 0 1.5rem 1.5rem; color: var(--miro-text); }
.article-content li { margin-bottom: 0.5rem; }

.article-box {
  background: var(--note-yellow);
  border: 1px solid var(--note-yellow-border);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sticky);
  transform: rotate(-0.5deg);
}

.article-cta-box {
  text-align: center;
  background: var(--note-cyan);
  border: 1.5px solid var(--note-cyan-border);
  padding: 3rem 2rem;
  border-radius: var(--radius-md);
  margin: 3.5rem 0 2rem 0;
  box-shadow: var(--shadow-sticky);
  transform: rotate(0.5deg);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--miro-muted);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.breadcrumbs a {
  color: var(--miro-muted);
}
.breadcrumbs a:hover {
  color: var(--miro-blue);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 2rem;
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1.5px solid var(--miro-border);
    display: none;
    box-shadow: var(--shadow-soft);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .floating-cta {
    width: 92%;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
  }
  .floating-text {
    font-size: 0.85rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .article-content {
    padding: 1.75rem;
  }
}