:root {
  --bg: #05060a;
  --bg-gradient-start: #060812;
  --bg-gradient-end: #0d1221;
  --panel: rgba(15, 20, 33, 0.85);
  --panel-2: #1a2338;
  --panel-hover: #202a44;
  --text: #f8fafc;
  --muted: #94a3b8;
  --line: rgba(148, 163, 184, 0.15);
  --line-strong: rgba(148, 163, 184, 0.3);
  --green: #10b981;
  --green-glow: rgba(16, 185, 129, 0.4);
  --red: #ef4444;
  --red-glow: rgba(239, 68, 68, 0.4);
  --amber: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.4);
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow-green: 0 0 25px rgba(16, 185, 129, 0.25);
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: "IBM Plex Sans", "Microsoft YaHei", sans-serif;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  animation: floatBackground 20s ease-in-out infinite;
}

@keyframes floatBackground {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(20px, -20px) scale(1.05);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(16, 185, 129, 0.4);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.5s ease forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.5s ease forwards;
}


a, button {
  font: inherit;
}

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

.site-shell {
  width: min(1440px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 20px 0 40px;
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 80px;
  border-radius: var(--radius-xl);
  padding: 16px 24px;
  background: rgba(15, 20, 33, 0.88);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  box-shadow: 
    0 4px 30px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(148, 163, 184, 0.1);
  border: 1px solid var(--line);
  margin-bottom: 24px;
  transition: all var(--transition-base);
}

.topbar:hover {
  box-shadow: 
    0 6px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(148, 163, 184, 0.15);
  transform: translateY(-2px);
}

.brand, .nav-links, .hero-actions, .section-head {
  display: flex;
  align-items: center;
}

.brand {
  gap: 14px;
}

.strategy-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(16, 185, 129, 0.15), rgba(139, 92, 246, 0.1));
  border: 1px solid rgba(16, 185, 129, 0.3);
  box-shadow: 
    0 4px 16px rgba(16, 185, 129, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.strategy-icon::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(16, 185, 129, 0.1),
    transparent
  );
  transform: rotate(45deg);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% {
    transform: translateX(-100%) rotate(45deg);
  }
  50% {
    transform: translateX(100%) rotate(45deg);
  }
}

.strategy-icon:hover {
  transform: scale(1.05) rotate(5deg);
  box-shadow: 
    0 8px 30px rgba(16, 185, 129, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  border-color: rgba(16, 185, 129, 0.5);
}

.strategy-icon svg {
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1;
}

.strategy-icon rect {
  fill: transparent;
  stroke: rgba(245, 158, 11, 0.7);
  stroke-width: 2;
}

.strategy-icon path {
  fill: none;
  stroke: var(--green);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.strategy-icon circle {
  fill: var(--red);
}

.brand strong, h1, h2, .capital-board strong, .metric-value {
  font-family: "Space Grotesk", "Microsoft YaHei", sans-serif;
}

.brand strong {
  display: block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  opacity: 0.85;
}

.nav-links {
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a, .primary-action, .secondary-action {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 20px;
  color: var(--text);
  background: rgba(26, 35, 56, 0.6);
  transition: all var(--transition-base);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.nav-links a::before, .secondary-action::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.nav-links a:hover::before, .secondary-action:hover::before {
  left: 100%;
}

.nav-links a:hover, .secondary-action:hover {
  border-color: var(--line-strong);
  background: rgba(32, 42, 68, 0.8);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.nav-links a.active {
  border-color: rgba(16, 185, 129, 0.5);
  color: var(--green);
  background: rgba(16, 185, 129, 0.15);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

.primary-action {
  color: #022c22;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-color: rgba(16, 185, 129, 0.5);
  font-weight: 700;
  box-shadow: 
    0 4px 15px rgba(16, 185, 129, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.primary-action::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

.primary-action:hover::before {
  left: 100%;
}

.primary-action:hover {
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  box-shadow: 
    0 8px 30px rgba(16, 185, 129, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  animation: pulseGlow 2s ease-in-out infinite;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 30px 0 20px;
}

.hero-copy, .capital-board, .intro-board, .intro-grid article, .backtest-head, .chart-section, .equity-section, .trades-section, .account-section {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: 
    0 4px 30px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(148, 163, 184, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.hero-copy::after, .capital-board::after, .intro-grid article::after, .backtest-head::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.3), transparent);
  pointer-events: none;
}

.hero-copy {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 340px;
  padding: clamp(32px, 5vw, 64px);
  position: relative;
  text-align: center;
}

.hero-copy::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -30%;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
  pointer-events: none;
  animation: pulseOrb 6s ease-in-out infinite;
}

@keyframes pulseOrb {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 {
  max-width: 820px;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 0.95;
  background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  position: relative;
}

h2 {
  font-size: 28px;
  background: linear-gradient(135deg, #f8fafc 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

h1, h2 {
  position: relative;
  z-index: 1;
}

.hero-copy p:not(.eyebrow) {
  max-width: 780px;
  margin: 20px 0 0;
  color: #c9d4dd;
  font-size: 17px;
  line-height: 1.8;
}

.hero-description {
  display: grid;
  gap: 8px;
}

.hero-description span {
  display: block;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.primary-action, .secondary-action {
  min-height: 48px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.capital-board {
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 24px;
  background: linear-gradient(145deg, rgba(26, 35, 56, 0.9), rgba(15, 20, 33, 0.95));
  position: relative;
}

.capital-board::before {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -30%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
  pointer-events: none;
  animation: pulseOrb 8s ease-in-out infinite;
}

.capital-board span {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.capital-board strong {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(245, 158, 11, 0.2);
}

.capital-board small {
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.intro-board {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: 36px;
  background: linear-gradient(145deg, rgba(26, 35, 56, 0.85), rgba(15, 20, 33, 0.9));
  transition: all var(--transition-base);
}

.intro-board:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(148, 163, 184, 0.12);
}

.intro-board strong {
  display: block;
  margin-top: 8px;
  font-size: 30px;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.intro-grid article {
  padding: 28px;
  transition: all var(--transition-base);
}

.intro-grid article:hover {
  transform: translateY(-6px);
  box-shadow: 
    0 16px 50px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(148, 163, 184, 0.12);
  border-color: rgba(16, 185, 129, 0.2);
}

.intro-grid h2 {
  margin: 12px 0;
  font-size: 24px;
}

.intro-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.backtest-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  gap: 20px;
  align-items: stretch;
  padding: 28px;
}

.backtest-head h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 72px);
}

.backtest-head p:not(.eyebrow) {
  max-width: 820px;
  color: #c9d4dd;
  font-size: 17px;
  line-height: 1.8;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 24px;
}

.metric-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  background: linear-gradient(145deg, rgba(15, 21, 28, 0.9), rgba(10, 16, 23, 0.95));
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.5), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.metric-card:hover {
  border-color: rgba(148, 163, 184, 0.25);
  background: rgba(32, 42, 68, 0.9);
  transform: translateY(-4px);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.4);
}

.metric-label {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
}

.metric-value {
  display: block;
  margin-top: 12px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.metric-value.positive {
  color: var(--green);
  text-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.metric-value.negative {
  color: var(--red);
  text-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

.chart-section, .equity-section, .trades-section, .account-section {
  margin-top: 20px;
}

.view-panel[hidden] {
  display: none !important;
}

.account-section > .account-gate,
.account-dashboard {
  margin: 20px 24px 24px;
}

.account-gate {
  display: grid;
  gap: 12px;
  justify-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  background: rgba(8, 11, 16, 0.38);
}

.account-gate strong {
  font-size: 22px;
}

.account-gate p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.account-dashboard.is-hidden,
.account-gate.is-hidden,
.account-tab-panel.is-hidden,
.auth-modal[aria-hidden="true"] {
  display: none;
}

.account-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(160px, 0.5fr) minmax(160px, 0.5fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px;
  background: rgba(8, 11, 16, 0.38);
}

.account-summary strong {
  display: block;
  margin-top: 6px;
  font-size: 18px;
}

.account-tabs {
  display: inline-flex;
  gap: 6px;
  padding: 4px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(23, 33, 43, 0.54);
}

.tab-button {
  border: 0;
  border-radius: 8px;
  padding: 8px 14px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.tab-button.active {
  color: #07110f;
  background: var(--green);
  font-weight: 700;
}

.account-page-tabs {
  margin: 16px 0;
}

.account-tab-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(8, 11, 16, 0.38);
}

.account-form {
  display: grid;
  gap: 14px;
}

.account-form label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
}

.account-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text);
  background: rgba(8, 11, 16, 0.58);
  outline: none;
}

.account-form input:focus {
  border-color: rgba(35, 208, 166, 0.6);
  box-shadow: 0 0 0 3px rgba(35, 208, 166, 0.12);
}

.toggle-row {
  display: flex !important;
  align-items: center;
  gap: 10px !important;
}

.toggle-row input {
  width: auto;
}

.settings-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.settings-grid .toggle-row,
.settings-actions {
  grid-column: 1 / -1;
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.form-message {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.form-message.error {
  color: var(--red);
}

.form-message.success {
  color: var(--green);
}

.copy-trade-list {
  display: grid;
  gap: 10px;
  padding: 20px 24px 24px;
}

.copy-trade-item {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px;
  background: rgba(8, 11, 16, 0.38);
}

.copy-trade-item strong {
  display: block;
  margin-bottom: 4px;
}

.copy-trade-item span {
  color: var(--muted);
  font-size: 13px;
}

.copy-trade-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 20px;
}

.auth-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 12, 0.72);
  backdrop-filter: blur(8px);
}

.auth-dialog {
  position: relative;
  width: min(440px, 100%);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--panel);
  box-shadow: var(--shadow-lg);
}

.auth-dialog h2 {
  margin-top: 0;
  margin-bottom: 18px;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--text);
  background: rgba(23, 33, 43, 0.74);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.section-head {
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
}

.chart-status {
  text-align: right;
  font-size: 13px;
  color: var(--muted);
}

.price-chart {
  height: 640px;
}

.equity-chart {
  height: 320px;
}

.trade-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  padding: 20px 24px 24px;
}

.trade-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  background: linear-gradient(145deg, rgba(15, 21, 28, 0.9), rgba(10, 16, 23, 0.95));
  transition: all var(--transition-base);
}

.trade-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border-color: rgba(148, 163, 184, 0.2);
}

.trade-card strong {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.side-long {
  color: var(--green);
  font-weight: 700;
}

.side-short {
  color: var(--red);
  font-weight: 700;
}

.trade-card dl {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 10px 14px;
  margin: 0;
  color: #e2e8f0;
  font-size: 13px;
}

.trade-card dt {
  color: var(--muted);
  font-weight: 500;
}

.trade-card dd {
  margin: 0;
  text-align: right;
  font-weight: 600;
}

.empty-state {
  grid-column: 1 / -1;
  color: var(--muted);
  padding: 20px 0;
  text-align: center;
}

.footer {
  margin-top: 40px;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.hero-subtitle {
  margin: 16px 0;
  font-size: 20px;
  color: var(--muted);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.features-grid {
  margin-top: 40px;
}

.section-header {
  text-align: center;
  margin-bottom: 28px;
}

.section-header .eyebrow {
  margin-bottom: 8px;
}

.section-header h2 {
  font-size: 32px;
  margin: 0;
}

.features-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.features-row:first-of-type {
  margin-bottom: 16px;
}

.feature-card {
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.stats-section {
  margin-top: 48px;
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.stat-card {
  padding: 20px;
  background: rgba(10, 16, 23, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.stat-header .stat-label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
}

.stat-badge.positive {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
}

.stat-main {
  font-size: 28px;
  font-weight: 700;
  font-family: "Space Grotesk", "Microsoft YaHei", sans-serif;
  color: var(--text);
}

.stats-footer {
  margin-top: 24px;
  text-align: center;
}

.strategy-preview {
  margin-top: 48px;
}

.preview-chart-container {
  position: relative;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
}

.preview-chart {
  height: 320px;
}

.preview-legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 16px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-dot.long {
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
}

.legend-dot.short {
  background: var(--red);
  box-shadow: 0 0 10px var(--red);
}

.how-it-works {
  margin-top: 48px;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.step-item {
  text-align: center;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative;
}

.step-item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -12px;
  transform: translateY(-50%);
  width: 24px;
  height: 1px;
  background: var(--line);
}

.step-number {
  display: inline-block;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid rgba(16, 185, 129, 0.3);
  line-height: 44px;
  font-size: 18px;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 16px;
}

.step-item h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
}

.step-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

@media (max-width: 1120px) {
  .metrics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100vw - 18px, 100%);
  }

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

  .intro-grid,
  .backtest-head {
    grid-template-columns: 1fr;
  }

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

  .account-summary,
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .copy-trade-item {
    grid-template-columns: 1fr;
  }

  .nav-links {
    justify-content: flex-start;
  }

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

  .price-chart {
    height: 500px;
  }

  .equity-chart {
    height: 260px;
  }
}

.admin-section {
  margin-top: 24px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  margin-bottom: 24px;
}

.admin-header h1 {
  font-size: 28px;
  margin: 8px 0;
}

.admin-header p {
  color: var(--muted);
  margin: 0;
}

.admin-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-search {
  margin-bottom: 24px;
}

.admin-search input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(10, 16, 23, 0.6);
  color: var(--text);
  font-size: 14px;
  transition: all var(--transition-base);
}

.admin-search input:focus {
  outline: none;
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(15, 21, 28, 0.8);
}

.admin-users-table {
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
}

.users-table {
  width: 100%;
  border-collapse: collapse;
}

.users-table th,
.users-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.users-table th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.users-table td {
  color: var(--text);
  font-size: 14px;
}

.users-table tbody tr:hover {
  background: rgba(32, 42, 68, 0.5);
}

.users-table .empty-state {
  text-align: center;
  color: var(--muted);
  padding: 40px;
}

.users-table .status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.status-badge.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
}

.status-badge.inactive {
  background: rgba(148, 163, 184, 0.15);
  color: var(--muted);
}

.status-badge.admin {
  background: rgba(245, 158, 11, 0.15);
  color: var(--amber);
}

.users-table .action-btn {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-base);
}

.users-table .edit-btn {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.users-table .edit-btn:hover {
  background: rgba(16, 185, 129, 0.25);
}

.user-edit-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-edit-modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-dialog {
  position: relative;
  width: min(480px, calc(100vw - 32px));
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 24px;
  cursor: pointer;
  transition: color var(--transition-base);
}

.modal-close:hover {
  color: var(--text);
}

.user-edit-modal h2 {
  margin: 0 0 20px;
  font-size: 20px;
}

.user-edit-form .form-group {
  margin-bottom: 16px;
}

.user-edit-form .form-group label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 6px;
  font-weight: 500;
}

.user-edit-form .form-group input[type="text"],
.user-edit-form .form-group input[type="email"],
.user-edit-form .form-group input[type="number"] {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(10, 16, 23, 0.6);
  color: var(--text);
  font-size: 14px;
  box-sizing: border-box;
}

.user-edit-form .form-group input[readonly] {
  opacity: 0.7;
  cursor: not-allowed;
  background: rgba(10, 16, 23, 0.8);
}

.user-edit-form .form-group input:focus {
  outline: none;
  border-color: rgba(16, 185, 129, 0.5);
}

.user-edit-form .checkbox-group {
  display: flex;
  gap: 20px;
  padding: 12px 14px;
  background: rgba(10, 16, 23, 0.4);
  border-radius: var(--radius-md);
}

.user-edit-form .checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  margin-bottom: 0;
}

.user-edit-form .checkbox-group label span {
  color: var(--text);
  font-size: 14px;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.danger-action {
  padding: 10px 16px;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.danger-action:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.5);
}

@media (max-width: 760px) {
  .admin-header {
    flex-direction: column;
    align-items: stretch;
  }

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

  .users-table th,
  .users-table td {
    padding: 8px 12px;
    font-size: 12px;
  }
}