/* ==========================================================================
   Cheat Engine 7.7 汉化版 — 官网样式
   现代简约风格 · 支持亮色 / 暗色主题
   ========================================================================== */

:root {
  /* -- 亮色主题（默认） -- */
  --surface-page:      #f9f9f7;
  --surface-1:         #fcfcfb;
  --surface-2:         #ffffff;
  --surface-raised:    #ffffff;

  --text-primary:      #0b0b0b;
  --text-secondary:    #52514e;
  --text-muted:        #898781;

  --border-hairline:   rgba(11, 11, 11, 0.10);
  --border-strong:     rgba(11, 11, 11, 0.16);

  --accent:            #2a78d6;
  --accent-strong:     #1c5cab;
  --accent-wash:       rgba(42, 120, 214, 0.10);

  --series-1:          #2a78d6; /* blue */
  --series-2:          #1baf7a; /* aqua */
  --series-3:          #eda100; /* yellow */
  --series-4:          #4a3aa7; /* violet */

  --status-good:       #0ca30c;
  --status-warning:    #fab219;

  --shadow-card: 0 1px 2px rgba(11,11,11,0.04), 0 8px 24px rgba(11,11,11,0.06);

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

  color-scheme: light;
}

:root[data-theme="dark"] {
  --surface-page:      #0d0d0d;
  --surface-1:         #1a1a19;
  --surface-2:         #201f1e;
  --surface-raised:    #232221;

  --text-primary:      #ffffff;
  --text-secondary:    #c3c2b7;
  --text-muted:        #898781;

  --border-hairline:   rgba(255, 255, 255, 0.10);
  --border-strong:     rgba(255, 255, 255, 0.16);

  --accent:            #3987e5;
  --accent-strong:     #86b6ef;
  --accent-wash:       rgba(57, 135, 229, 0.14);

  --series-1:          #3987e5;
  --series-2:          #199e70;
  --series-3:          #c98500;
  --series-4:          #9085e9;

  --status-good:       #0ca30c;
  --status-warning:    #fab219;

  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4);

  color-scheme: dark;
}

/* 系统默认跟随，除非用户手动切换（见 data-theme 属性由 JS 控制） */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --surface-page:      #0d0d0d;
    --surface-1:         #1a1a19;
    --surface-2:         #201f1e;
    --surface-raised:    #232221;

    --text-primary:      #ffffff;
    --text-secondary:    #c3c2b7;
    --text-muted:        #898781;

    --border-hairline:   rgba(255, 255, 255, 0.10);
    --border-strong:     rgba(255, 255, 255, 0.16);

    --accent:            #3987e5;
    --accent-strong:     #86b6ef;
    --accent-wash:       rgba(57, 135, 229, 0.14);

    --series-1:          #3987e5;
    --series-2:          #199e70;
    --series-3:          #c98500;
    --series-4:          #9085e9;

    --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4);

    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--surface-page);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* -------------------------------------------------------------------- */
/* Skip link (accessibility)                                            */
/* -------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* -------------------------------------------------------------------- */
/* Header                                                                */
/* -------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface-page) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-hairline);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  color: var(--text-primary);
}
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}
.main-nav a:hover { color: var(--text-primary); text-decoration: none; }

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

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hairline);
  background: var(--surface-1);
  color: var(--text-secondary);
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--border-strong); color: var(--text-primary); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

/* -------------------------------------------------------------------- */
/* Buttons                                                               */
/* -------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-strong); }
.btn-secondary {
  background: var(--surface-1);
  color: var(--text-primary);
  border-color: var(--border-hairline);
}
.btn-secondary:hover { border-color: var(--border-strong); }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* -------------------------------------------------------------------- */
/* Hero                                                                  */
/* -------------------------------------------------------------------- */
.hero {
  padding: 72px 0 48px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-wash);
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  color: var(--text-primary);
}
.hero h1 .accent { color: var(--accent); }
.hero p.lead {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.hero-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* -------------------------------------------------------------------- */
/* KPI / Stat tile row                                                   */
/* -------------------------------------------------------------------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border-hairline);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 40px 0;
  box-shadow: var(--shadow-card);
}
.stat-tile {
  background: var(--surface-1);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  font-variant-numeric: proportional-nums;
}
.stat-value .unit {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}
.stat-sub {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.stat-sub .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
}
.stat-meter {
  height: 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--series-1) 18%, var(--surface-2));
  overflow: hidden;
  margin-top: 4px;
}
.stat-meter > span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--series-1);
}

@media (max-width: 860px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .stat-row { grid-template-columns: 1fr; }
}

/* -------------------------------------------------------------------- */
/* Sections                                                              */
/* -------------------------------------------------------------------- */
section {
  padding: 56px 0;
}
section + section {
  border-top: 1px solid var(--border-hairline);
}
.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 40px;
}
.section-head .eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 10px;
}
.section-head p {
  color: var(--text-secondary);
  margin: 0;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 24px;
}
.feature-card .icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-wash);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.feature-card .icon svg { width: 20px; height: 20px; }
.feature-card h3 {
  font-size: 16px;
  margin: 0 0 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

@media (max-width: 860px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
}

/* Changelog list */
.changelog-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.changelog-list li {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
}
.changelog-list li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--series-1);
  margin-top: 8px;
}
.changelog-list strong {
  color: var(--text-primary);
}

/* Download section */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.download-card {
  background: var(--surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}
.download-card .platform-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--text-primary);
}
.download-card h3 { font-size: 16px; margin: 0 0 4px; }
.download-card p { font-size: 13px; color: var(--text-muted); margin: 0 0 16px; }

@media (max-width: 700px) {
  .download-grid { grid-template-columns: 1fr; }
}

.note-box {
  margin-top: 28px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--status-warning) 12%, var(--surface-1));
  border: 1px solid color-mix(in srgb, var(--status-warning) 35%, transparent);
  font-size: 13px;
  color: var(--text-secondary);
}
.note-box strong { color: var(--text-primary); }

/* Steps */
.steps {
  display: grid;
  gap: 16px;
}
.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.step .num {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-wash);
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h3 { font-size: 15px; margin: 0 0 4px; }
.step p { font-size: 14px; color: var(--text-secondary); margin: 0; }
.step code {
  background: var(--surface-2);
  border: 1px solid var(--border-hairline);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--border-hairline);
}
.faq-item summary {
  padding: 18px 4px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-primary);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--text-muted);
  font-size: 20px;
  font-weight: 400;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p {
  padding: 0 4px 18px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-hairline);
  padding: 32px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a { color: var(--text-secondary); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}