/* OSHNENG (中适能) — Merged Stylesheet */

/* === tokens.css === */
/* ============================================================
   OSHNENG (中适能) Design Tokens
   Design System Custom Properties
   ============================================================ */

:root {
  /* ── Core Palette ─────────────────────────────────────────── */
  --color-primary:        #2563EB;
  --color-primary-dark:   #1D4ED8;
  --color-primary-light:  #3B82F6;
  --color-primary-50:     #EFF6FF;
  --color-primary-100:    #DBEAFE;
  --color-primary-200:    #BFDBFE;
  --color-primary-rgb:    37, 99, 235;

  --color-accent:         #00A687;
  --color-accent-dark:    #008F74;
  --color-accent-light:   #34D399;
  --color-accent-rgb:     0, 166, 135;

  --color-purple:         #7C3AED;
  --color-purple-light:   #A78BFA;
  --color-purple-rgb:     124, 58, 237;

  --color-amber:          #F59E0B;
  --color-amber-light:    #FBBF24;
  --color-amber-rgb:      245, 158, 11;

  --color-red:            #EF4444;
  --color-red-light:      #F87171;
  --color-red-rgb:        239, 68, 68;

  --color-cyan:           #06B6D4;
  --color-cyan-rgb:       6, 182, 212;

  --color-white:          #FFFFFF;
  --color-black:          #000000;

  /* ── Dark Mode Surfaces (hero / tech / flow sections) ───── */
  --dark-bg:              #0A1628;
  --dark-bg-alt:          #0F1D32;
  --dark-bg-card:         rgba(255, 255, 255, 0.03);
  --dark-bg-card-hover:   rgba(255, 255, 255, 0.05);
  --dark-border:          rgba(255, 255, 255, 0.06);
  --dark-border-hover:    rgba(255, 255, 255, 0.12);
  --dark-text:            #F0F4FC;
  --dark-text-secondary:  rgba(240, 244, 252, 0.6);
  --dark-text-muted:      rgba(240, 244, 252, 0.4);
  --dark-bg-rgb:          10, 22, 40;

  /* ── Light Mode Surfaces ──────────────────────────────────── */
  --light-bg:             #FFFFFF;
  --light-bg-alt:         #F8FAFC;
  --light-bg-card:        #FFFFFF;
  --light-card-border:    #E2E8F0;
  --light-card-border-hover: #CBD5E1;
  --light-text:           #0A1628;
  --light-text-secondary: #475569;
  --light-text-muted:     #94A3B8;

  /* ── Spacing Scale ────────────────────────────────────────── */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;
  --space-3xl:  64px;
  --space-4xl:  80px;
  --space-5xl:  120px;

  /* ── Border Radius ────────────────────────────────────────── */
  --radius-sm:    8px;
  --radius-md:    12px;
  --radius-lg:    16px;
  --radius-xl:    20px;
  --radius-2xl:   24px;
  --radius-full:  999px;

  /* ── Shadows ──────────────────────────────────────────────── */
  --shadow-card:        0 1px 3px rgba(0, 0, 0, 0.06),
                        0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-card-hover:  0 4px 12px rgba(0, 0, 0, 0.08),
                        0 12px 32px rgba(0, 0, 0, 0.06);
  --shadow-glow-blue:   0 0 20px rgba(37, 99, 235, 0.25),
                        0 0 60px rgba(37, 99, 235, 0.10);
  --shadow-glow-green:  0 0 20px rgba(0, 166, 135, 0.25),
                        0 0 60px rgba(0, 166, 135, 0.10);
  --shadow-glow-purple: 0 0 20px rgba(124, 58, 237, 0.25),
                        0 0 60px rgba(124, 58, 237, 0.10);
  --shadow-elevated:    0 8px 24px rgba(0, 0, 0, 0.12),
                        0 24px 48px rgba(0, 0, 0, 0.08);

  /* ── Container ────────────────────────────────────────────── */
  --container-max:  1280px;
  --container-pad:  24px;

  /* ── Typography ───────────────────────────────────────────── */
  --font-heading:   'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:      'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --leading-tight:   1.2;
  --leading-snug:    1.4;
  --leading-normal:  1.6;
  --leading-relaxed: 1.8;

  --tracking-tight:  -0.02em;
  --tracking-normal: 0;
  --tracking-wide:   0.05em;
  --tracking-wider:  0.15em;

  /* ── Transitions ──────────────────────────────────────────── */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow:   0.6s ease;
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ── Z-Index Scale ────────────────────────────────────────── */
  --z-base:      1;
  --z-dropdown:  100;
  --z-sticky:    500;
  --z-nav:       1000;
  --z-overlay:   2000;
  --z-modal:     3000;
  --z-toast:     4000;
}

/* Desktop container padding override */
@media (min-width: 768px) {
  :root {
    --container-pad: 40px;
  }
}


/* === base.css === */
/* ============================================================
   OSHNENG (中适能) Base Styles
   Reset, Typography, Utilities
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: var(--leading-normal);
  color: var(--light-text);
  background-color: var(--light-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: inherit;
}

h1 {
  font-size: clamp(36px, 6vw, 64px);
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
}

h3 {
  font-size: clamp(20px, 3vw, 28px);
}

h4 {
  font-size: 20px;
}

h5 {
  font-size: 18px;
}

h6 {
  font-size: 16px;
}

p {
  line-height: var(--leading-normal);
}

strong, b {
  font-weight: 600;
}

/* ── Text Gradient ──────────────────────────────────────────── */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Mono Text ──────────────────────────────────────────────── */
.text-mono {
  font-family: var(--font-mono);
}

/* ── Section Labels & Titles ────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.section-label-light {
  color: var(--color-primary-light);
}

.section-label-light::before {
  background: var(--color-primary-light);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-lg);
}

.section-desc {
  max-width: 680px;
  color: var(--light-text-secondary);
  line-height: var(--leading-relaxed);
  font-size: 17px;
}

.section-desc-dark {
  color: var(--dark-text-secondary);
}

.section-header {
  margin-bottom: var(--space-3xl);
}

/* ── Selection ──────────────────────────────────────────────── */
::selection {
  background: rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--color-primary-rgb), 0.35);
}

/* Firefox */
html {
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-primary-rgb), 0.2) transparent;
}

/* ── Utility: Text Align ────────────────────────────────────── */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* ── Utility: Margin Auto ───────────────────────────────────── */
.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ── Utility: Margin Top ────────────────────────────────────── */
.mt-xs  { margin-top: var(--space-xs); }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }
.mt-4xl { margin-top: var(--space-4xl); }

/* ── Utility: Margin Bottom ─────────────────────────────────── */
.mb-xs  { margin-bottom: var(--space-xs); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }
.mb-4xl { margin-bottom: var(--space-4xl); }

/* ── Utility: Padding ───────────────────────────────────────── */
.pt-0   { padding-top: 0; }
.pb-0   { padding-bottom: 0; }

/* ── Utility: Display ───────────────────────────────────────── */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ── Utility: Width ─────────────────────────────────────────── */
.w-full {
  width: 100%;
}

/* ── Utility: Overflow ──────────────────────────────────────── */
.overflow-hidden {
  overflow: hidden;
}

/* ── Utility: Position ──────────────────────────────────────── */
.relative {
  position: relative;
}

/* ── Focus Visible ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}


/* === components.css === */
/* ============================================================
   OSHNENG (中适能) Components
   Buttons, Cards, Tags, Badges, KPIs, Forms, Tables
   ============================================================ */

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  white-space: nowrap;
  user-select: none;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Primary Button */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgba(var(--color-primary-rgb), 0.4);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.98) translateY(0);
  box-shadow: 0 1px 4px rgba(var(--color-primary-rgb), 0.3);
}

/* Ghost Button (dark backgrounds) */
.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost:active {
  transform: scale(0.98);
}

/* Ghost Button (light backgrounds) */
.btn-ghost-dark {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-ghost-dark:hover {
  background: rgba(var(--color-primary-rgb), 0.05);
  box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.15);
}

.btn-ghost-dark:active {
  transform: scale(0.98);
}

/* Small Button */
.btn-sm {
  padding: 10px 20px;
  font-size: 13px;
}

/* Large Button */
.btn-lg {
  padding: 18px 36px;
  font-size: 16px;
}

/* Icon-only Button */
.btn-icon {
  padding: 12px;
  border-radius: var(--radius-md);
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--light-bg-card);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--light-card-border-hover);
}

.card-dark {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.card-dark:hover {
  background: var(--dark-bg-card-hover);
  border-color: var(--dark-border-hover);
}

/* No hover lift variant */
.card-flat {
  box-shadow: var(--shadow-card);
}

.card-flat:hover {
  transform: none;
}

/* ── Tags ───────────────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.tag-blue {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}

.tag-green {
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
}

.tag-purple {
  background: rgba(var(--color-purple-rgb), 0.1);
  color: var(--color-purple);
}

.tag-amber {
  background: rgba(var(--color-amber-rgb), 0.1);
  color: var(--color-amber);
}

.tag-red {
  background: rgba(var(--color-red-rgb), 0.1);
  color: var(--color-red);
}

.tag-cyan {
  background: rgba(var(--color-cyan-rgb), 0.1);
  color: var(--color-cyan);
}

/* Dark background tags */
.tag-dark {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.7);
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 1;
}

.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.badge-live {
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
}

.badge-live::before {
  background: var(--color-accent);
  animation: pulseDot 2s ease-in-out infinite;
}

.badge-active {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}

.badge-active::before {
  background: var(--color-primary);
  animation: pulseDot 2s ease-in-out infinite;
}

.badge-warning {
  background: rgba(var(--color-amber-rgb), 0.1);
  color: var(--color-amber);
}

.badge-warning::before {
  background: var(--color-amber);
  animation: pulseDot 2s ease-in-out infinite;
}

/* ── KPI Cards ──────────────────────────────────────────────── */
.kpi-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kpi-card .kpi-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--light-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kpi-card .kpi-value {
  font-size: 32px;
  font-weight: 700;
  font-family: var(--font-mono);
  line-height: 1.2;
  color: var(--light-text);
}

.kpi-card .kpi-delta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 500;
}

.kpi-card .delta-up {
  color: var(--color-accent);
}

.kpi-card .delta-up::before {
  content: '↑';
}

.kpi-card .delta-down {
  color: var(--color-red);
}

.kpi-card .delta-down::before {
  content: '↓';
}

/* ── Data Tables ────────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table thead th {
  background: var(--light-bg-alt);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  color: var(--light-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--light-card-border);
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--light-card-border);
  color: var(--light-text);
}

.data-table tbody tr:hover {
  background: var(--light-bg-alt);
}

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

/* Dark Data Table */
.data-table-dark {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table-dark thead th {
  background: rgba(255, 255, 255, 0.03);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  color: var(--dark-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--dark-border);
}

.data-table-dark tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--dark-border);
  color: var(--dark-text);
}

.data-table-dark tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.data-table-dark tbody tr:last-child td {
  border-bottom: none;
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--light-text);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--light-text);
  background: var(--light-bg);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--light-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8.825a.5.5 0 0 1-.354-.146l-3.5-3.5a.5.5 0 0 1 .708-.708L6 7.618l3.146-3.147a.5.5 0 0 1 .708.708l-3.5 3.5A.5.5 0 0 1 6 8.825Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-hint {
  font-size: 13px;
  color: var(--light-text-muted);
  margin-top: 6px;
}

.form-error {
  font-size: 13px;
  color: var(--color-red);
  margin-top: 6px;
}

/* ── Tooltip ────────────────────────────────────────────────── */
.tooltip {
  position: relative;
  cursor: help;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  padding: 8px 14px;
  background: var(--dark-bg);
  color: var(--dark-text);
  font-size: 13px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
  box-shadow: var(--shadow-elevated);
}

.tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ── Divider ────────────────────────────────────────────────── */
.divider {
  height: 1px;
  border: none;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--light-card-border) 50%,
    transparent 100%
  );
}

.divider-dark {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--dark-border) 50%,
    transparent 100%
  );
}

/* ── Icon Circle ────────────────────────────────────────────── */
.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-circle svg {
  width: 22px;
  height: 22px;
}

.icon-circle-blue {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}

.icon-circle-green {
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
}

.icon-circle-purple {
  background: rgba(var(--color-purple-rgb), 0.1);
  color: var(--color-purple);
}

.icon-circle-amber {
  background: rgba(var(--color-amber-rgb), 0.1);
  color: var(--color-amber);
}

.icon-circle-lg {
  width: 64px;
  height: 64px;
}

.icon-circle-lg svg {
  width: 28px;
  height: 28px;
}

/* ── Progress Bar ───────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(var(--color-primary-rgb), 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar .progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-slow);
}

/* ── Chip Group ─────────────────────────────────────────────── */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}


/* === layout.css === */
/* ============================================================
   OSHNENG (中适能) Layout
   Navigation (with dropdown), Grid, Containers, Footer
   ============================================================ */

/* ── Navigation ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 14, 23, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 14, 23, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* Brand */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  color: var(--color-white);
  letter-spacing: 0.05em;
}

.brand-text {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.01em;
}

.brand-en {
  color: var(--dark-text-secondary);
  font-weight: 400;
  font-size: 13px;
  margin-left: 6px;
  letter-spacing: 0.02em;
}

/* ── Nav Menu ──────────────────────────────────────────────── */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link-l1 {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link-l1:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link-l1.active {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

/* Nav CTA */
.navbar-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.navbar-cta:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 2px 12px rgba(var(--color-primary-rgb), 0.4);
}

/* Mobile Hamburger */
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: calc(var(--z-nav) - 1);
  background: rgba(10, 14, 23, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  padding: var(--space-lg) var(--container-pad);
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  pointer-events: none;
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.mobile-group-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.35);
  padding: 16px 16px 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 4px;
}

.mobile-group-label:first-child {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.mobile-link {
  font-size: 16px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  padding: 12px 16px;
  transition: all var(--transition-fast);
  border-radius: var(--radius-md);
}

.mobile-link:hover,
.mobile-link.active {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.06);
}

.mobile-cta {
  margin: var(--space-lg) 16px 0;
  text-align: center;
  justify-content: center;
}

/* ── Container ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.container-lg {
  max-width: 1440px;
}

.container-sm {
  max-width: 960px;
}

/* ── Section ────────────────────────────────────────────────── */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--dark-bg);
  color: var(--dark-text);
}

.section-alt {
  background: var(--light-bg-alt);
}

.section-navy {
  background: var(--dark-bg-alt);
  color: var(--dark-text);
}

/* ── Grid System ────────────────────────────────────────────── */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* ── Flex Utilities ─────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-between { justify-content: space-between; }
.flex-center { align-items: center; }
.flex-middle { align-items: center; justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.gap-xs  { gap: var(--space-xs); }
.gap-sm  { gap: var(--space-sm); }
.gap-md  { gap: var(--space-md); }
.gap-lg  { gap: var(--space-lg); }
.gap-xl  { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }

/* ── Page Header ────────────────────────────────────────────── */
.page-header {
  padding: 140px 0 60px;
  background: var(--dark-bg);
  color: var(--dark-text);
  position: relative;
  overflow: hidden;
}

.page-header-bg {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.015) 0px,
      rgba(255, 255, 255, 0.015) 1px,
      transparent 1px,
      transparent 60px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.015) 0px,
      rgba(255, 255, 255, 0.015) 1px,
      transparent 1px,
      transparent 60px
    );
}

.page-header-glow {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.10) 0%, transparent 70%);
  pointer-events: none;
}

.page-header-content {
  position: relative;
  z-index: 1;
}

.page-header-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
}

.page-header-desc {
  font-size: 18px;
  color: var(--dark-text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 64px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-md);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--dark-text);
}

.footer-tagline {
  font-size: 14px;
  color: var(--dark-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 280px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--dark-text);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.footer-links a {
  font-size: 14px;
  color: var(--dark-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--dark-text-muted);
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--dark-text-muted);
}

.breadcrumb a {
  color: var(--dark-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.breadcrumb-separator {
  color: var(--dark-text-muted);
}


/* === sections.css === */
/* ============================================================
   OSHNENG (中适能) Sections
   All section-specific styles matching actual HTML class names
   ============================================================ */

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--dark-bg);
  color: var(--dark-text);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.015) 0px,
      rgba(255, 255, 255, 0.015) 1px,
      transparent 1px,
      transparent 60px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.015) 0px,
      rgba(255, 255, 255, 0.015) 1px,
      transparent 1px,
      transparent 60px
    );
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero-glow--blue {
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.10) 0%, transparent 70%);
}

.hero-glow--green {
  bottom: -5%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.08) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  padding: 8px 20px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--dark-text-secondary);
  margin-bottom: var(--space-xl);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulseDot 2s ease-in-out infinite;
  display: inline-block;
}

.hero-title {
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--dark-text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: var(--space-2xl);
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-stat-value {
  font-size: 36px;
  font-weight: 700;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 14px;
  color: var(--dark-text-muted);
}

/* ── Pain Points ────────────────────────────────────────────── */
.pain-card {
  background: var(--light-bg-card);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.pain-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.pain-card-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.pain-card-icon {
  margin-bottom: var(--space-md);
  color: var(--light-text-secondary);
}

.pain-card-stat {
  font-size: 40px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-primary);
  line-height: 1.1;
  display: block;
  margin-bottom: 8px;
}

.pain-card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--light-text);
}

.pain-card-desc {
  color: var(--light-text-secondary);
  line-height: 1.7;
  font-size: 15px;
}

/* ── Solution Cards ─────────────────────────────────────────── */
.solution-card {
  background: var(--light-bg-card);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.solution-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.solution-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 24px;
}

.solution-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.solution-desc {
  font-size: 15px;
  color: var(--light-text-secondary);
  line-height: 1.7;
}

.solution-accent {
  position: absolute;
  bottom: 0;
  left: var(--space-xl);
  right: var(--space-xl);
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.solution-card:hover .solution-accent {
  opacity: 1;
}

/* ── Guarantee Banner ───────────────────────────────────────── */
.guarantee-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-xl);
  padding: 32px 48px;
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.guarantee-banner-left {
  display: flex;
  flex-direction: column;
}

.guarantee-number {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  font-family: var(--font-mono);
}

.guarantee-text {
  font-size: 15px;
  opacity: 0.9;
  margin-top: 4px;
}

.guarantee-banner-divider {
  width: 1px;
  height: 60px;
  background: rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.guarantee-banner-center {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15px;
}

.guarantee-sub {
  font-size: 13px;
  opacity: 0.7;
}

/* ── Trust Cards ────────────────────────────────────────────── */
.trust-card {
  background: var(--light-bg-card);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  text-align: center;
  transition: all var(--transition-normal);
}

.trust-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.trust-card-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--color-primary);
}

.trust-card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.trust-card-guarantee {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.trust-card-desc {
  font-size: 14px;
  color: var(--light-text-secondary);
  line-height: 1.6;
}

/* ── CTA Buttons ────────────────────────────────────────────── */
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── SCOP Methodology ───────────────────────────────────────── */
.scop-layers {
  margin-bottom: var(--space-3xl);
}

.layers-row {
  display: flex;
  align-items: stretch;
}

.layer-card {
  flex: 1;
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-border);
  padding: var(--space-xl);
  position: relative;
  transition: all var(--transition-normal);
}

.layer-card:first-child {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.layer-card:last-child {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.layer-card--highlight {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.05);
}

.layer-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dark-text);
}

.layer-desc {
  font-size: 14px;
  color: var(--dark-text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.layer-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  flex-shrink: 0;
  color: var(--dark-text-muted);
}

.physics-section {
  margin-top: var(--space-2xl);
}

.physics-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border-left: 3px solid transparent;
  transition: all var(--transition-normal);
}

.physics-card:hover {
  background: var(--dark-bg-card-hover);
  border-color: var(--dark-border-hover);
}

.physics-card-border {
  display: none;
}

.physics-card-icon {
  margin-bottom: 12px;
  color: var(--dark-text-secondary);
}

.physics-card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark-text);
}

.physics-card-desc {
  font-size: 14px;
  color: var(--dark-text-secondary);
  line-height: 1.6;
}

.formula-display {
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  overflow-x: auto;
  margin-top: var(--space-2xl);
}

.formula-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dark-text-muted);
  margin-bottom: 12px;
}

.formula-text {
  color: var(--color-accent-light);
  font-size: 18px;
  line-height: 1.8;
}

.formula-var {
  color: var(--color-cyan);
  font-weight: 600;
}

.formula-op {
  color: var(--dark-text-muted);
}

/* ── Tech Architecture ──────────────────────────────────────── */
.arch-layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.arch-layer {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

.arch-layer-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

/* ── Comparison Table ───────────────────────────────────────── */
.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--light-card-border);
  box-shadow: var(--shadow-card);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.comparison-table thead th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
  background: var(--light-bg-alt);
  border-bottom: 1px solid var(--light-card-border);
  white-space: nowrap;
}

.comparison-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--light-card-border);
  vertical-align: middle;
}

.comparison-table tbody tr:nth-child(even) {
  background: rgba(248, 250, 252, 0.5);
}

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

.comparison-table tbody tr:hover {
  background: var(--color-primary-50);
}

.highlight-col {
  background: rgba(var(--color-primary-rgb), 0.03);
  font-weight: 600;
}

.comparison-table thead .highlight-col {
  background: rgba(var(--color-primary-rgb), 0.06);
  color: var(--color-primary);
}

/* ── Flow Timeline ──────────────────────────────────────────── */
.flow-timeline {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
  margin-bottom: var(--space-2xl);
}

.flow-phase {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  min-width: 120px;
  flex: 1;
  position: relative;
  padding-top: 20px;
}

.flow-phase-node {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  justify-content: center;
}

.flow-phase-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--dark-text-muted);
  border: 3px solid var(--dark-bg);
  box-shadow: 0 0 0 2px var(--dark-text-muted);
  z-index: 1;
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.flow-phase.active .flow-phase-dot {
  background: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary), 0 0 20px rgba(var(--color-primary-rgb), 0.4);
  transform: scale(1.3);
}

.flow-phase.visited .flow-phase-dot {
  background: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.flow-phase-label {
  font-size: 13px;
  margin-top: 12px;
  text-align: center;
  color: var(--dark-text-secondary);
  font-weight: 500;
  padding: 0 4px;
}

.flow-phase-duration {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--dark-text-muted);
  margin-top: 4px;
}

.flow-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.flow-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: none;
}

.flow-card.active {
  display: block;
  animation: fadeInUp 0.4s ease;
}

.flow-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.flow-card-num {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.flow-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--dark-text);
}

.flow-card p {
  color: var(--dark-text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.flow-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-card ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--dark-text-secondary);
}

.flow-card ul li::before {
  content: '→';
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ── BOT Timeline ───────────────────────────────────────────── */
.bot-timeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-3xl);
  padding: var(--space-xl) 0;
}

.bot-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.bot-circle {
  width: 80px;
  height: 80px;
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  background: var(--dark-bg-card);
  position: relative;
  z-index: 1;
  transition: all var(--transition-normal);
}

.bot-circle:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow-blue);
}

.bot-pct {
  line-height: 1.2;
}

.bot-pct--user {
  color: var(--color-accent);
  font-size: 16px;
}

.bot-pct--platform {
  color: var(--color-primary);
  font-size: 12px;
}

.bot-year {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--dark-text-muted);
  margin-top: 8px;
}

.bot-connector {
  width: 40px;
  height: 3px;
  background: rgba(var(--color-primary-rgb), 0.2);
  margin-top: -20px;
  flex-shrink: 0;
}

/* ── Scene Cards ────────────────────────────────────────────── */
.scene-card {
  background: var(--light-bg-card);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  border-left: 4px solid transparent;
  transition: all var(--transition-normal);
}

.scene-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.scene-card:nth-child(1) { border-left-color: var(--color-primary); }
.scene-card:nth-child(2) { border-left-color: var(--color-accent); }
.scene-card:nth-child(3) { border-left-color: var(--color-purple); }
.scene-card:nth-child(4) { border-left-color: var(--color-amber); }
.scene-card:nth-child(5) { border-left-color: var(--color-cyan); }
.scene-card:nth-child(6) { border-left-color: var(--color-red); }

.scene-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-md);
}

.scene-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scene-card:nth-child(1) .scene-icon { background: rgba(var(--color-primary-rgb), 0.1); color: var(--color-primary); }
.scene-card:nth-child(2) .scene-icon { background: rgba(var(--color-accent-rgb), 0.1); color: var(--color-accent); }
.scene-card:nth-child(3) .scene-icon { background: rgba(var(--color-purple-rgb), 0.1); color: var(--color-purple); }
.scene-card:nth-child(4) .scene-icon { background: rgba(var(--color-amber-rgb), 0.1); color: var(--color-amber); }
.scene-card:nth-child(5) .scene-icon { background: rgba(var(--color-cyan-rgb), 0.1); color: var(--color-cyan); }
.scene-card:nth-child(6) .scene-icon { background: rgba(var(--color-red-rgb), 0.1); color: var(--color-red); }

.scene-name {
  font-size: 18px;
  font-weight: 600;
}

.scene-type {
  font-size: 13px;
  color: var(--light-text-muted);
}

.scene-desc {
  font-size: 14px;
  color: var(--light-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.scene-metrics {
  display: flex;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--light-card-border);
}

.scene-metrics .metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--light-text-muted);
  font-family: var(--font-mono);
}

.metric-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 18px;
  color: var(--light-text);
}

.metric-value--accent {
  color: var(--color-accent);
}

/* ── FAQ ────────────────────────────────────────────────────── */
.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-2xl);
}

.faq-tab {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--light-card-border);
  background: var(--light-bg);
  color: var(--light-text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.faq-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.faq-tab.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.faq-item {
  background: var(--light-bg);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 20px;
  background: none;
  border: none;
  border-bottom: 1px solid var(--light-card-border);
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  text-align: left;
  color: var(--light-text);
  transition: color 0.15s ease;
  font-family: var(--font-body);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-chevron {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  color: var(--light-text-muted);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer.open {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 20px 16px;
  margin: 0;
  color: var(--light-text-secondary);
  line-height: 1.7;
  font-size: 15px;
}

/* ── ROI Calculator ─────────────────────────────────────────── */
.roi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.result-card {
  background: var(--light-bg);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

.result-label {
  font-size: 13px;
  color: var(--light-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.result-value {
  font-size: 42px;
  font-weight: 800;
  font-family: var(--font-mono);
  line-height: 1;
}

.result-value--accent {
  color: var(--color-accent);
}

.result-value--primary {
  color: var(--color-primary);
}

.result-unit {
  font-size: 20px;
}

.result-note {
  font-size: 14px;
  color: var(--light-text-secondary);
  margin-top: 8px;
}

/* ── Contact ────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-form {
  background: var(--light-bg);
  border: 1px solid var(--light-card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon--blue {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
}

.contact-icon--green {
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
}

.contact-icon--purple {
  background: rgba(var(--color-purple-rgb), 0.1);
  color: var(--color-purple);
}

.service-promise {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: rgba(var(--color-primary-rgb), 0.03);
  border: 1px solid rgba(var(--color-primary-rgb), 0.1);
  border-radius: var(--radius-lg);
}

.promise-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--light-text-secondary);
}

.promise-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.promise-check {
  color: var(--color-accent);
  font-weight: 700;
}

/* ── Subsection Title ───────────────────────────────────────── */
.subsection-title {
  color: var(--dark-text);
  margin-bottom: var(--space-xl);
  font-size: 20px;
  font-weight: 600;
}

/* ── Code Inline ────────────────────────────────────────────── */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(var(--color-primary-rgb), 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-primary);
}

/* ── Demo Panel Header ──────────────────────────────────────── */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.panel-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark-text);
}

/* ── Responsive: Sections ───────────────────────────────────── */
@media (max-width: 1023px) {
  .hero-stats {
    gap: 24px;
  }

  .layers-row {
    flex-direction: column;
    gap: var(--space-md);
  }

  .layer-card {
    border-radius: var(--radius-lg) !important;
  }

  .layer-arrow {
    width: auto;
    height: 32px;
    transform: rotate(90deg);
  }

  .arch-layers {
    grid-template-columns: 1fr;
  }

  .bot-timeline {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
  }

  .bot-connector {
    display: none;
  }

  .flow-timeline {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-md);
  }

  .flow-phase {
    scroll-snap-align: center;
    min-width: 120px;
  }

  .guarantee-banner {
    flex-direction: column;
    text-align: center;
    padding: var(--space-xl);
  }

  .guarantee-banner-divider {
    width: 60px;
    height: 1px;
  }
}

@media (max-width: 767px) {
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    text-align: center;
    justify-content: center;
  }

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

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

  .scene-metrics {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

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

  .flow-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 639px) {
  .hero-stat-value {
    font-size: 28px;
  }

  .hero-title {
    font-size: clamp(28px, 8vw, 44px);
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .guarantee-number {
    font-size: 32px;
  }

  .result-value {
    font-size: 32px;
  }
}


/* === demo.css === */
/* ============================================================
   OSHNENG (中适能) Demo Console
   Interactive Dashboard / Terminal UI
   ============================================================ */

/* ── Demo Shell ─────────────────────────────────────────────── */
.demo-shell {
  background: #0D1117;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 32px 64px rgba(0, 0, 0, 0.2);
  max-width: 1100px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ── Title Bar ──────────────────────────────────────────────── */
.demo-titlebar {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.demo-titlebar-dots {
  display: flex;
  gap: 8px;
}

.demo-titlebar-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.demo-titlebar-dots span:nth-child(1) { background: #FF5F57; }
.demo-titlebar-dots span:nth-child(2) { background: #FFBD2E; }
.demo-titlebar-dots span:nth-child(3) { background: #27C93F; }

.demo-titlebar-title {
  flex: 1;
  text-align: center;
  font-size: 13px;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.4);
}

.demo-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.5);
}

/* ── Body Layout ────────────────────────────────────────────── */
.demo-body {
  display: flex;
  min-height: 520px;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.demo-sidebar {
  width: 200px;
  background: rgba(0, 0, 0, 0.2);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  padding: 16px 0;
  flex-shrink: 0;
}

.demo-sidebar-section {
  padding: 8px 16px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.25);
  font-family: var(--font-mono);
}

.demo-sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 13px;
  cursor: pointer;
  border-left: 3px solid transparent;
  color: rgba(255, 255, 255, 0.5);
  transition: all var(--transition-fast);
  background: transparent;
  border-top: none;
  border-right: none;
  border-bottom: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-body);
}

.demo-sidebar-item:hover {
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.8);
}

.demo-sidebar-item.active {
  border-left-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.05);
  color: var(--color-white);
  font-weight: 500;
}

.demo-sidebar-item svg {
  flex-shrink: 0;
  opacity: 0.6;
}

.demo-sidebar-item.active svg {
  opacity: 1;
  color: var(--color-primary);
}

/* ── Mobile Tabs ────────────────────────────────────────────── */
.demo-mobile-tabs {
  display: none;
  overflow-x: auto;
  gap: 4px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.demo-mobile-tabs::-webkit-scrollbar { display: none; }

.demo-mobile-tab {
  white-space: nowrap;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}

.demo-mobile-tab:hover {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.8);
}

.demo-mobile-tab.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ── Content Area ───────────────────────────────────────────── */
.demo-content {
  flex: 1;
  padding: 24px;
  min-height: 500px;
  overflow-y: auto;
  overflow-x: hidden;
}

.demo-panel {
  display: none;
}

.demo-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ── KPI Row ────────────────────────────────────────────────── */
.demo-kpi-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-bottom: var(--space-xl);
}

.demo-kpi {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: all var(--transition-fast);
}

.demo-kpi:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

/* ── Chart Container ────────────────────────────────────────── */
.demo-chart-container {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: 20px;
}

/* ── Chart Bar Animation ────────────────────────────────────── */
.chart-bar {
  transition: height 0.8s ease;
}

/* ── Device Table ───────────────────────────────────────────── */
.demo-device-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 16px;
}

.demo-device-table thead th {
  background: rgba(255, 255, 255, 0.03);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
}

.demo-device-table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.75);
}

.demo-device-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.demo-device-table tbody tr:last-child td {
  border-bottom: none;
}

.status-on { color: #34D399; font-weight: 500; }
.status-off { color: rgba(255, 255, 255, 0.3); }
.status-warn { color: #FBBF24; font-weight: 500; }

/* ── Log Entries ────────────────────────────────────────────── */
.demo-log {
  max-height: 400px;
  overflow-y: auto;
}

.demo-log-entry {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13px;
  align-items: flex-start;
}

.demo-log-entry:last-child {
  border-bottom: none;
}

.log-time {
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  font-size: 12px;
  flex-shrink: 0;
  min-width: 70px;
}

.type-tag {
  display: inline-flex;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  flex-shrink: 0;
}

.type-tag.info { background: rgba(var(--color-primary-rgb), 0.15); color: var(--color-primary-light); }
.type-tag.success { background: rgba(var(--color-accent-rgb), 0.15); color: #34D399; }
.type-tag.warning { background: rgba(var(--color-amber-rgb), 0.15); color: #FBBF24; }
.type-tag.error { background: rgba(var(--color-red-rgb), 0.15); color: var(--color-red-light); }
.type-tag.ai { background: rgba(var(--color-purple-rgb), 0.15); color: var(--color-purple-light); }

.log-msg {
  flex: 1;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

.log-msg code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--color-cyan);
}

/* ── Settlement Cards ───────────────────────────────────────── */
.demo-settlement-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.demo-settlement-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

.settlement-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.settlement-value {
  font-size: 32px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.settlement-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  margin-top: 4px;
}

/* ── Settlement Detail Grid ─────────────────────────────────── */
.settlement-detail {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.settlement-detail h4 {
  color: var(--dark-text);
  margin-bottom: var(--space-lg);
  font-size: 15px;
}

.settlement-grid {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  font-size: 14px;
}

.settlement-header {
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}

.settlement-divider {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  grid-column: 1 / -1;
}

.settlement-total {
  font-weight: 700;
  font-size: 18px;
}

/* ── Model Stats ────────────────────────────────────────────── */
.demo-model-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.demo-model-stat {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}

.model-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

.model-stat-value {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* ── Config Form ────────────────────────────────────────────── */
.demo-config-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.config-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.config-field label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.config-field input,
.config-field select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--dark-text);
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
}

.config-field input:focus,
.config-field select:focus {
  border-color: var(--color-primary);
}

/* ── Alert Banner ───────────────────────────────────────────── */
.demo-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  margin-bottom: 16px;
}

.demo-alert-info {
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary-light);
}

.demo-alert-success {
  background: rgba(var(--color-accent-rgb), 0.08);
  border: 1px solid rgba(var(--color-accent-rgb), 0.2);
  color: #34D399;
}

/* ── Responsive Demo ────────────────────────────────────────── */
@media (max-width: 1023px) {
  .demo-sidebar {
    display: none;
  }

  .demo-mobile-tabs {
    display: flex;
  }

  .demo-kpi-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .demo-settlement-row {
    grid-template-columns: 1fr;
  }

  .demo-config-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .demo-kpi-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .demo-content {
    padding: 16px;
  }

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


/* === animations.css === */
/* ============================================================
   OSHNENG (中适能) Animations
   Keyframes, Reveal Effects, Motion Utilities
   ============================================================ */

/* ── Keyframe Animations ────────────────────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes pulseDot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.5;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ── Reveal on Scroll ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Reveal Delay Classes */
.reveal-delay-1 { transition-delay: 0.1s !important; }
.reveal-delay-2 { transition-delay: 0.2s !important; }
.reveal-delay-3 { transition-delay: 0.3s !important; }
.reveal-delay-4 { transition-delay: 0.4s !important; }
.reveal-delay-5 { transition-delay: 0.5s !important; }

/* Reveal Variants */
.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right {
  opacity: 0;
  transform: translateX(20px);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ── Counter Value (JS-driven) ──────────────────────────────── */
.counter-value {
  transition: all 0.3s ease;
}

/* ── Hover Animations ───────────────────────────────────────── */
.hover-float {
  transition: transform var(--transition-normal);
}

.hover-float:hover {
  transform: translateY(-4px);
}

.hover-glow-blue {
  transition: box-shadow var(--transition-normal);
}

.hover-glow-blue:hover {
  box-shadow: var(--shadow-glow-blue);
}

.hover-glow-green {
  transition: box-shadow var(--transition-normal);
}

.hover-glow-green:hover {
  box-shadow: var(--shadow-glow-green);
}

/* ── Stagger Animation (via inline style or JS) ─────────────── */
.stagger-item {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeInUp 0.5s ease forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.10s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.20s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.30s; }
.stagger-item:nth-child(7) { animation-delay: 0.35s; }
.stagger-item:nth-child(8) { animation-delay: 0.40s; }

/* ── Pulse Utility ──────────────────────────────────────────── */
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ── Float Utility ──────────────────────────────────────────── */
.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ── Gradient Animation ─────────────────────────────────────── */
.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

/* ── Shimmer Loading ────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(255, 255, 255, 0.03) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

/* ── Reduced Motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }

  .stagger-item {
    opacity: 1;
    transform: none;
    animation: none;
  }
}


/* === responsive.css === */
/* ============================================================
   OSHNENG (中适能) Responsive
   Media Queries for 4 Breakpoints
   ============================================================ */

/* ================================================================
   BREAKPOINT: <= 1279px (Large Tablets / Small Desktops)
   ================================================================ */
@media (max-width: 1279px) {
  /* Grid */
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Hero */
  .hero-stats {
    gap: 32px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1.2fr repeat(3, 1fr);
    gap: var(--space-xl);
  }

  /* Page Header */
  .page-header {
    padding: 120px 0 50px;
  }
}


/* ================================================================
   BREAKPOINT: <= 1023px (Tablets)
   ================================================================ */
@media (max-width: 1023px) {
  /* Navigation */
  .navbar-menu,
  .navbar-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Demo */
  .demo-sidebar {
    display: none;
  }

  .demo-mobile-tabs {
    display: flex;
  }

  /* Grids */
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-6 {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Hero */
  .hero-title {
    font-size: clamp(32px, 6vw, 56px);
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .hero-stat {
    min-width: calc(50% - 12px);
  }

  /* Sections */
  .section {
    padding: 80px 0;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .footer-tagline {
    max-width: 100%;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Flow Timeline */
  .flow-timeline {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-md);
    margin: var(--space-2xl) calc(-1 * var(--container-pad)) 0;
    padding-left: var(--container-pad);
    padding-right: var(--container-pad);
  }

  .flow-phase {
    scroll-snap-align: center;
    min-width: 120px;
  }

  /* SCOP Layers */
  .scop-layers {
    flex-direction: column;
    gap: var(--space-md);
  }

  .scop-layer-card {
    border-radius: var(--radius-lg) !important;
  }

  .scop-arrow {
    width: auto;
    height: 32px;
    transform: rotate(90deg);
  }

  /* Physics Grid */
  .physics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Comparison Table */
  .comparison-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Guarantee Banner */
  .guarantee-banner {
    flex-direction: column;
    text-align: center;
    padding: var(--space-xl);
  }

  /* Page Header */
  .page-header {
    padding: 110px 0 45px;
  }

  /* Tech */
  .tech-innovation-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* ================================================================
   BREAKPOINT: <= 767px (Mobile Landscape / Large Phones)
   ================================================================ */
@media (max-width: 767px) {
  /* Container */
  :root {
    --container-pad: 20px;
  }

  /* Navigation */
  .navbar-inner {
    height: 60px;
  }

  .mobile-menu {
    top: 60px;
  }

  /* Grids */
  .grid-2,
  .grid-3,
  .grid-5 {
    grid-template-columns: 1fr;
  }

  .grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hero */
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .hero-stat {
    min-width: 0;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    text-align: center;
    justify-content: center;
  }

  /* Sections */
  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: var(--space-2xl);
  }

  .section-title {
    font-size: clamp(24px, 5vw, 36px);
  }

  .section-desc {
    font-size: 15px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  /* Comparison Table */
  .comparison-table {
    font-size: 13px;
  }

  .comparison-table thead th,
  .comparison-table tbody td {
    padding: 10px 12px;
  }

  /* Demo Content */
  .demo-content {
    padding: 16px;
  }

  /* BOT Timeline */
  .bot-timeline {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
  }

  .bot-connector {
    display: none;
  }

  /* Guarantee Banner */
  .guarantee-banner {
    padding: var(--space-lg);
  }

  .guarantee-banner strong {
    font-size: 22px;
  }

  /* CTA */
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  /* Physics Grid */
  .physics-grid {
    grid-template-columns: 1fr;
  }

  /* Scene Card Metrics */
  .scene-card .metrics {
    flex-direction: column;
    gap: var(--space-sm);
  }

  /* Contact Form */
  .contact-form {
    padding: 24px;
  }

  /* Flow */
  .flow-phase {
    min-width: 110px;
  }

  /* Page Header */
  .page-header {
    padding: 100px 0 40px;
  }

  .page-header-title {
    font-size: clamp(28px, 6vw, 40px);
  }

  /* Tech */
  .tech-innovation-grid {
    grid-template-columns: 1fr;
  }

  .arch-layers {
    gap: var(--space-md);
  }

  /* ROI */
  .roi-grid {
    grid-template-columns: 1fr;
  }
}


/* ================================================================
   BREAKPOINT: <= 639px (Small Phones)
   ================================================================ */
@media (max-width: 639px) {
  /* Hero */
  .hero-stat-value {
    font-size: 28px;
  }

  .hero-stat-label {
    font-size: 12px;
  }

  .hero-title {
    font-size: clamp(28px, 8vw, 44px);
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-badge {
    font-size: 12px;
    padding: 6px 14px;
  }

  /* Pain Cards */
  .pain-card .stat {
    font-size: 32px;
  }

  .pain-card .title {
    font-size: 18px;
  }

  /* Section Spacing */
  .section {
    padding: 48px 0;
  }

  /* Typography */
  .section-title {
    font-size: clamp(22px, 5vw, 32px);
  }

  .section-desc {
    font-size: 14px;
  }

  .section-label {
    font-size: 11px;
  }

  /* Buttons */
  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }

  .btn-lg {
    padding: 14px 28px;
    font-size: 15px;
  }

  /* Cards */
  .card {
    padding: var(--space-lg);
  }

  .card-dark {
    padding: var(--space-lg);
  }

  /* Trust */
  .trust-card .guarantee {
    font-size: 20px;
  }

  /* Scene */
  .scene-card .metric-value {
    font-size: 16px;
  }

  /* Logo */
  .brand-logo {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  .brand-text {
    font-size: 16px;
  }

  .brand-en {
    display: none;
  }

  /* Page Header */
  .page-header {
    padding: 90px 0 35px;
  }

  .page-header-title {
    font-size: clamp(24px, 7vw, 36px);
  }

  /* FAQ */
  .faq-question {
    padding: 16px 20px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 0 20px 16px;
    font-size: 14px;
  }
}


/* ================================================================
   PRINT STYLES
   ================================================================ */
@media print {
  .navbar,
  .mobile-menu,
  .hero-bg,
  .hero-glow-1,
  .hero-glow-2,
  .page-header-bg,
  .page-header-glow {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section-dark,
  .section-navy {
    background: #fff;
    color: #000;
  }

  .text-gradient {
    -webkit-text-fill-color: initial;
    background: none;
    color: var(--color-primary);
  }

  .btn {
    border: 1px solid #000;
  }
}


/* === faq-inline === */
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer.open { max-height: 500px; }
.faq-answer p { padding: 0 20px 16px; margin: 0; color: var(--light-text-secondary); line-height: 1.7; font-size: 15px; }
.faq-chevron { transition: transform 0.3s ease; flex-shrink: 0; }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; padding: 18px 20px; background: none; border: none; border-bottom: 1px solid var(--light-card-border); cursor: pointer; font-size: 16px; font-weight: 500; text-align: left; color: var(--light-text); transition: color 0.15s ease; }
.faq-question:hover { color: var(--color-primary); }
.faq-tab { padding: 8px 18px; border-radius: var(--radius-full); border: 1px solid var(--light-card-border); background: var(--light-bg); color: var(--light-text-secondary); font-size: 14px; cursor: pointer; transition: all 0.2s ease; white-space: nowrap; }
.faq-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.faq-tab.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.faq-item { background: var(--light-bg); border-radius: var(--radius-md); margin-bottom: 8px; overflow: hidden; }

/* === reveal-visible === */
.reveal.visible { opacity: 1 !important; transform: translateY(0) !important; }

/* === mobile-menu-fix === */
.mobile-menu {
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 80px !important;
}
.mobile-group-label {
  position: sticky;
  top: 0;
  background: rgba(10, 14, 23, 0.98);
  z-index: 1;
  backdrop-filter: blur(20px);
}

details > summary::-webkit-details-marker { display: none; }
details > summary { list-style: none; }
details[open] > summary svg { transform: rotate(180deg); }

/* ============================================================
   Legal Framework — Cards, Footer Bar, Flow Annotations
   ============================================================ */

/* Legal Cards in FAQ */
.faq-answer--rich { padding: 20px; }
.legal-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.legal-card {
  background: var(--light-bg);
  border: 1px solid var(--light-card-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.legal-card-title { font-size: 15px; font-weight: 600; margin: 8px 0 4px; color: var(--light-text); }
.legal-card-title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}
.legal-card-title a:hover {
  opacity: 0.75;
  border-bottom-style: solid;
}
.legal-card-title a::after {
  content: ' \2197';
  font-size: 11px;
  opacity: 0.4;
}
.legal-card-ref { font-family: var(--font-mono); font-size: 13px; color: var(--color-primary); margin: 0 0 6px; }
.legal-card-relevance { font-size: 13px; color: var(--light-text-muted); margin: 0; line-height: 1.6; }
.legal-summary {
  margin-top: 20px;
  padding: 16px 20px;
  background: rgba(var(--color-primary-rgb), 0.04);
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--light-text-secondary);
  line-height: 1.7;
}

/* Legal Card Color Coding */
.legal-card[data-type="law"] { border-left-color: var(--color-primary); }
.legal-card[data-type="standard"] { border-left-color: var(--color-accent); }
.legal-card[data-type="policy"] { border-left-color: var(--color-purple); }
.legal-card[data-type="finance"] { border-left-color: var(--color-amber); }
.legal-card[data-type="mandatory"] { border-left-color: var(--color-red); }

/* Footer Legal Bar */
.footer-legal {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
}
.footer-legal-label { font-size: 12px; color: var(--dark-text-muted); margin-right: 8px; }

/* Flow card legal annotation */
.flow-card-legal {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Solution / Trust card legal ref line */
.legal-ref-line {
  margin-top: 12px;
  font-size: 12px;
  color: var(--light-text-muted);
  line-height: 1.6;
}

/* Responsive: Legal cards single column on mobile */
@media (max-width: 768px) {
  .legal-cards { grid-template-columns: 1fr; }
}