/* VBS的无限画布导演台 — 官网样式
   纯静态：无外部字体、无外部图片、无第三方库，全部光效与图形由 CSS / 内联 SVG 完成。
   配色：深色底 + 三个强调色（青蓝 / 紫罗兰 / 暖橙）+ 图表用的青色。 */

:root {
  /* 底色 */
  --bg: #07080b;
  --bg-2: #0a0c12;
  --bg-elevated: #0c0f15;
  --panel: #10141b;
  --panel-2: #151a24;

  /* 线 */
  --border: #232a36;
  --border-soft: #171c25;
  --border-bright: rgba(120, 160, 255, 0.45);

  /* 字 */
  --text: #e9edf5;
  --text-muted: #9aa6b8;
  --text-dim: #6b7688;

  /* 强调色：青蓝 + 紫罗兰 + 暖橙（+ 图表用青色） */
  --c1: #4d8dff;
  --c1-hi: #7fb0ff;
  --c2: #a06bff;
  --c2-hi: #c2a0ff;
  --c3: #ffa640;
  --c4: #34d3e0;
  --c-ok: #45d6a4;

  /* 兼容旧类名 */
  --accent: #4d8dff;
  --accent-hover: #7fb0ff;
  --accent-soft: rgba(77, 141, 255, 0.12);
  --accent-line: rgba(77, 141, 255, 0.35);
  --ok: #45d6a4;
  --warn: #ffa640;

  /* 渐变 */
  --grad-brand: linear-gradient(100deg, #7fb0ff 0%, #a06bff 46%, #ffa640 100%);
  --grad-btn: linear-gradient(135deg, #3f7dff 0%, #8b5cff 100%);
  --grad-panel: linear-gradient(180deg, rgba(21, 26, 36, 0.92), rgba(12, 15, 21, 0.94));
  --grad-hair: linear-gradient(90deg, transparent, rgba(77, 141, 255, 0.75), rgba(160, 107, 255, 0.75), rgba(255, 166, 64, 0.45), transparent);

  --radius: 10px;
  --radius-lg: 14px;
  --wrap: 1120px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans CJK SC", sans-serif;
  --mono: "Cascadia Mono", Consolas, "SFMono-Regular", "Courier New", monospace;

  --t: 280ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* 全站极细网格底纹（很淡，只做质感） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.016) 1px, transparent 1px);
  background-size: 56px 56px;
}

main, .site-header, .site-footer { position: relative; z-index: 1; }

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

a { color: var(--c1-hi); text-decoration: none; transition: color var(--t); }
a:hover { color: #fff; text-decoration: underline; }

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0.01em;
}

p { margin: 0; }
ul, ol { margin: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--panel);
  color: var(--text);
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- 顶部导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, rgba(9, 11, 16, 0.96), rgba(9, 11, 16, 0.86));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--grad-hair);
  opacity: 0.5;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand:hover { color: var(--text); text-decoration: none; }

.brand-logo {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: block;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 6px 18px -8px rgba(77, 141, 255, 0.9);
}

/* 旧的内联 SVG 标识（保留兼容） */
.brand-mark { flex: none; width: 26px; height: 26px; color: var(--c1); }

.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 11px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
}
.nav-toggle:hover { border-color: var(--border-bright); }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 13px;
  padding: 7px 9px;
  border-radius: 7px;
  white-space: nowrap;
  transition: color var(--t), background var(--t);
}
.site-nav a:hover {
  color: var(--text);
  background: linear-gradient(180deg, rgba(77, 141, 255, 0.14), rgba(160, 107, 255, 0.08));
  text-decoration: none;
}
.site-nav a[aria-current="page"] {
  color: var(--text);
  background: linear-gradient(180deg, rgba(77, 141, 255, 0.16), rgba(160, 107, 255, 0.08));
  box-shadow: inset 0 0 0 1px rgba(120, 160, 255, 0.22);
}

.site-nav a.nav-cta {
  color: #fff;
  background: var(--grad-btn);
  border: 1px solid transparent;
  margin-left: 8px;
  box-shadow: 0 8px 22px -12px rgba(90, 120, 255, 1);
}
.site-nav a.nav-cta:hover {
  color: #fff;
  box-shadow: 0 10px 28px -12px rgba(140, 110, 255, 1);
  filter: brightness(1.08);
}

/* ---------- 通用区块 ---------- */

.section { padding: 70px 0; border-top: 1px solid var(--border-soft); position: relative; }
.section.no-line { border-top: 0; }

.section-head { max-width: 760px; margin-bottom: 32px; }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c1-hi);
  margin-bottom: 12px;
  font-family: var(--mono);
  display: flex;
  align-items: center;
  gap: 8px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--grad-hair);
}

.section h2 { font-size: 27px; margin-bottom: 12px; }
.section-head p { color: var(--text-muted); font-size: 15.5px; }
.lead { color: var(--text-muted); font-size: 17px; }

/* 标题渐变文字（带降级：不支持时保持实色） */
.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

@supports not ((background-clip: text) or (-webkit-background-clip: text)) {
  .grad-text { background: none; color: var(--text); -webkit-text-fill-color: currentColor; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 66px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(820px 440px at 6% -10%, rgba(77, 141, 255, 0.26), transparent 62%),
    radial-gradient(700px 400px at 96% 0%, rgba(160, 107, 255, 0.22), transparent 60%),
    radial-gradient(560px 320px at 62% 112%, rgba(255, 166, 64, 0.12), transparent 66%),
    linear-gradient(180deg, #0b0e15 0%, #07080b 100%);
}

/* 细网格 + 顶部光带 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(760px 420px at 26% 14%, #000 0%, transparent 78%);
  mask-image: radial-gradient(760px 420px at 26% 14%, #000 0%, transparent 78%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--grad-hair);
}

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

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 16px;
  letter-spacing: 0.005em;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c1-hi);
  border: 1px solid rgba(120, 160, 255, 0.28);
  background: linear-gradient(135deg, rgba(77, 141, 255, 0.14), rgba(160, 107, 255, 0.08));
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 18px;
}

.hero-kicker i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c3);
  box-shadow: 0 0 10px 1px rgba(255, 166, 64, 0.9);
}

.hero .lead { max-width: 31em; margin-bottom: 22px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }

.hero-chips {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.hero-chips li {
  font-size: 13px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(21, 26, 36, 0.9), rgba(12, 15, 21, 0.9));
  border-radius: 999px;
  padding: 5px 12px;
  display: flex;
  align-items: center;
  gap: 7px;
}

.hero-chips li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c4);
  box-shadow: 0 0 8px 1px rgba(52, 211, 224, 0.8);
  flex: none;
}

.hero-note { font-size: 13px; color: var(--text-dim); }

/* ---------- 按钮 ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  color: var(--text);
  cursor: pointer;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t), background var(--t);
}

.btn:hover {
  text-decoration: none;
  color: var(--text);
  border-color: var(--border-bright);
  transform: translateY(-1px);
  box-shadow: 0 12px 30px -18px rgba(77, 141, 255, 0.9);
}

.btn-primary {
  background: var(--grad-btn);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 26px -14px rgba(90, 120, 255, 1), inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.08);
  box-shadow: 0 16px 40px -16px rgba(140, 110, 255, 1), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn-lg { padding: 13px 24px; font-size: 16px; }

/* ---------- Hero 右侧：纯 CSS 画布示意图 ---------- */

.mock {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #121722 0%, #0a0d13 100%);
  padding: 14px;
  overflow: hidden;
  box-shadow: 0 30px 70px -40px rgba(77, 141, 255, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

.mock::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(360px 200px at 12% 0%, rgba(77, 141, 255, 0.16), transparent 70%),
    radial-gradient(320px 180px at 92% 100%, rgba(160, 107, 255, 0.14), transparent 70%);
}

.mock-bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 7px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 14px;
}

.mock-dot { width: 9px; height: 9px; border-radius: 50%; background: #262b33; }
.mock-dot.on { background: var(--c1); box-shadow: 0 0 10px 1px rgba(77, 141, 255, 0.9); }

.mock-label {
  margin-left: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.mock-canvas {
  position: relative;
  z-index: 1;
  height: 252px;
  border-radius: 8px;
  background-color: #080a0f;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 22px 22px;
  border: 1px solid var(--border-soft);
}

.mock-node {
  position: absolute;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(180deg, #161b25, #10141b);
  padding: 8px 10px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--mono);
  letter-spacing: 0.02em;
  box-shadow: 0 10px 24px -18px rgba(0, 0, 0, 0.9);
}

.mock-node b {
  display: block;
  font-weight: 600;
  font-size: 11px;
  color: var(--text);
  margin-bottom: 6px;
  font-family: var(--font);
}

.mock-thumb {
  height: 34px;
  border-radius: 5px;
  background: linear-gradient(135deg, rgba(77, 141, 255, 0.65), rgba(77, 141, 255, 0.08));
  margin-bottom: 6px;
}

.mock-thumb.alt { background: linear-gradient(135deg, rgba(52, 211, 224, 0.6), rgba(52, 211, 224, 0.06)); }
.mock-thumb.warm { background: linear-gradient(135deg, rgba(255, 166, 64, 0.6), rgba(255, 166, 64, 0.06)); }

.mock-lines { display: block; }
.mock-lines i {
  display: block;
  height: 4px;
  border-radius: 2px;
  background: #232a36;
  margin-bottom: 5px;
}
.mock-lines i:last-child { width: 62%; margin-bottom: 0; }

.mock-edge {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, rgba(77, 141, 255, 0.1), rgba(160, 107, 255, 0.85), rgba(77, 141, 255, 0.1));
}

.mock-badge {
  position: absolute;
  right: 12px;
  bottom: 12px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--c4);
  border: 1px solid rgba(52, 211, 224, 0.3);
  border-radius: 5px;
  padding: 3px 7px;
  background: rgba(7, 8, 11, 0.85);
}

/* ---------- 卡片网格 ---------- */

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 22px;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}

/* hover 时的渐变描边发光 */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(77, 141, 255, 0.7), rgba(160, 107, 255, 0.45) 45%, rgba(255, 166, 64, 0.25) 70%, transparent 85%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(120, 160, 255, 0.35);
  box-shadow: 0 22px 50px -30px rgba(77, 141, 255, 0.85), 0 18px 44px -34px rgba(160, 107, 255, 0.9);
}

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

.card h3 { font-size: 16px; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 14.5px; }

.card-icon {
  width: 22px;
  height: 22px;
  color: var(--c1-hi);
  margin-bottom: 14px;
  display: block;
  filter: drop-shadow(0 0 8px rgba(77, 141, 255, 0.5));
}

.card ul { padding-left: 18px; color: var(--text-muted); font-size: 14.5px; }
.card li { margin: 5px 0; }

.card-soft { background: linear-gradient(180deg, rgba(16, 20, 27, 0.9), rgba(10, 13, 18, 0.9)); }

/* 本地执行：能力小卡 */
.cap-card { border-left: 2px solid transparent; border-image: linear-gradient(180deg, var(--c1), var(--c2)) 1; }
.cap-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c1-hi);
  border: 1px solid rgba(120, 160, 255, 0.28);
  background: rgba(77, 141, 255, 0.1);
  border-radius: 999px;
  padding: 2px 9px;
  margin-bottom: 12px;
}

/* ---------- 版本对比 ---------- */

.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }

.edition {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
}

.edition:hover { transform: translateY(-2px); border-color: var(--border-bright); }

.edition.highlight {
  border-color: rgba(140, 110, 255, 0.4);
  background: linear-gradient(180deg, rgba(30, 27, 54, 0.85), rgba(12, 15, 21, 0.95));
  box-shadow: 0 24px 60px -40px rgba(140, 110, 255, 0.95);
}

.edition-tag {
  display: inline-block;
  font-size: 12px;
  font-family: var(--mono);
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  margin-bottom: 14px;
  align-self: flex-start;
}
.edition.highlight .edition-tag {
  color: var(--c2-hi);
  border-color: rgba(160, 107, 255, 0.4);
  background: rgba(160, 107, 255, 0.12);
}

.edition h3 { font-size: 20px; margin-bottom: 8px; }
.edition > p { color: var(--text-muted); font-size: 14.5px; margin-bottom: 18px; }

.spec-list { list-style: none; padding: 0; margin: 0; font-size: 14.5px; }
.spec-list li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
}
.spec-list li:first-child { border-top: 0; }
.spec-list .tick { flex: none; width: 16px; height: 16px; margin-top: 5px; color: var(--c-ok); filter: drop-shadow(0 0 6px rgba(69, 214, 164, 0.5)); }
.spec-list .cross { flex: none; width: 16px; height: 16px; margin-top: 5px; color: var(--text-dim); }

/* ---------- 价格 ---------- */

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

.price-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}

.price-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-bright);
  box-shadow: 0 24px 56px -34px rgba(77, 141, 255, 0.9);
}

.price-card.featured {
  border-color: rgba(140, 110, 255, 0.45);
  background: linear-gradient(180deg, rgba(32, 27, 58, 0.9), rgba(12, 15, 21, 0.96));
  box-shadow: 0 26px 66px -38px rgba(140, 110, 255, 1);
}

.price-card.featured::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(150deg, rgba(160, 107, 255, 0.9), rgba(77, 141, 255, 0.5) 50%, rgba(255, 166, 64, 0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

.price-badge {
  position: absolute;
  top: -11px;
  left: 24px;
  font-size: 12px;
  letter-spacing: 0.04em;
  background: var(--grad-btn);
  color: #fff;
  border-radius: 999px;
  padding: 2px 11px;
  font-weight: 500;
  box-shadow: 0 8px 20px -10px rgba(140, 110, 255, 1);
}

.price-name { font-size: 15px; color: var(--text-muted); margin-bottom: 14px; }

.price-amount { display: flex; align-items: baseline; gap: 6px; margin-bottom: 6px; }

.price-amount .num {
  font-size: 42px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
}

.price-amount .unit { font-size: 15px; color: var(--text-muted); }

.price-desc { font-size: 13.5px; color: var(--text-dim); margin-bottom: 20px; }
.price-card .btn { justify-content: center; margin-top: auto; }

.price-foot {
  margin-top: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(16, 20, 27, 0.9), rgba(10, 13, 18, 0.9));
  padding: 18px 22px;
  font-size: 14.5px;
  color: var(--text-muted);
}

.price-foot strong { color: var(--text); }

.wechat {
  font-family: var(--mono);
  font-size: 15px;
  color: #fff;
  background: linear-gradient(135deg, rgba(77, 141, 255, 0.2), rgba(160, 107, 255, 0.16));
  border: 1px solid rgba(120, 160, 255, 0.3);
  border-radius: 6px;
  padding: 2px 8px;
  white-space: nowrap;
}

/* ---------- 试用步骤 ---------- */

.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; }

.steps li {
  counter-increment: step;
  position: relative;
  padding: 16px 0 16px 48px;
  border-top: 1px solid var(--border-soft);
}

.steps li:first-child { border-top: 0; }

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(120, 160, 255, 0.4);
  background: linear-gradient(140deg, rgba(77, 141, 255, 0.22), rgba(160, 107, 255, 0.16));
  color: var(--c1-hi);
  font-family: var(--mono);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 0 18px -6px rgba(77, 141, 255, 0.9);
}

.steps h3 { font-size: 15.5px; margin-bottom: 4px; }
.steps p { color: var(--text-muted); font-size: 14.5px; }

.callout {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--c3);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 20, 15, 0.85), rgba(10, 13, 18, 0.9));
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--text-muted);
}

.callout strong { color: var(--text); }

/* ---------- 下载 ---------- */

.dl-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}

.dl-card:hover { transform: translateY(-3px); border-color: var(--border-bright); box-shadow: 0 24px 56px -34px rgba(77, 141, 255, 0.9); }

.dl-card.highlight {
  border-color: rgba(140, 110, 255, 0.42);
  background: linear-gradient(180deg, rgba(30, 27, 54, 0.82), rgba(12, 15, 21, 0.95));
  box-shadow: 0 26px 66px -40px rgba(140, 110, 255, 0.95);
}

.dl-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }

.dl-icon { flex: none; width: 22px; height: 22px; color: var(--c1-hi); filter: drop-shadow(0 0 8px rgba(77, 141, 255, 0.6)); }

.dl-card h3 { font-size: 17px; }

.dl-file {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-muted);
  background: #090b10;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 4px 0 14px;
  word-break: break-all;
}

.dl-card p { color: var(--text-muted); font-size: 14.5px; }
.dl-card .btn { margin-top: 16px; justify-content: center; }

/* ---------- 图表 ---------- */

.chart-figure {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(520px 240px at 12% -10%, rgba(77, 141, 255, 0.1), transparent 70%),
    linear-gradient(180deg, rgba(18, 22, 31, 0.92), rgba(10, 13, 18, 0.95));
  padding: 22px;
  transition: border-color var(--t), box-shadow var(--t);
}

.chart-figure:hover {
  border-color: rgba(120, 160, 255, 0.3);
  box-shadow: 0 24px 56px -40px rgba(77, 141, 255, 0.9);
}

.chart-title { font-size: 15.5px; margin-bottom: 4px; }

.chart-sub { font-size: 13.5px; color: var(--text-dim); margin-bottom: 16px; }

.chart-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.chart-svg { display: block; width: 100%; height: auto; }
.chart-svg--wide { min-width: 520px; max-width: 680px; margin-left: auto; margin-right: auto; }
.chart-donut { max-width: 260px; margin: 0 auto; }

.chart-svg text { font-family: var(--font); }
.chart-svg .t-mono { font-family: var(--mono); }
.chart-svg .t-strong { fill: #ffffff; font-size: 30px; font-weight: 600; }
.chart-svg .t-label { fill: var(--text-muted); font-size: 12.5px; }
.chart-svg .t-small { fill: var(--text-dim); font-size: 11px; }
.chart-svg .t-onbar { fill: #eef3ff; font-size: 13px; }
.chart-svg .t-axis { fill: var(--text-dim); font-size: 11.5px; font-family: var(--mono); }

.chart-note {
  font-size: 12.5px;
  color: var(--text-dim);
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
  line-height: 1.6;
}

.chart-legend { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.chart-legend--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.chart-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.chart-legend .val {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--text);
}

.swatch { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.swatch.s1 { background: var(--c1); box-shadow: 0 0 10px -1px rgba(77, 141, 255, 0.9); }
.swatch.s2 { background: var(--c2); box-shadow: 0 0 10px -1px rgba(160, 107, 255, 0.9); }
.swatch.s3 { background: var(--c3); box-shadow: 0 0 10px -1px rgba(255, 166, 64, 0.9); }
.swatch.s4 { background: var(--c4); box-shadow: 0 0 10px -1px rgba(52, 211, 224, 0.9); }
.swatch.s5 { background: linear-gradient(135deg, var(--c1), var(--c2)); }

.chart-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 26px;
  align-items: center;
}

/* SVG 配色（统一由 CSS 变量驱动，便于整站换色） */
.fill-c1 { fill: var(--c1); }
.fill-c2 { fill: var(--c2); }
.fill-c3 { fill: var(--c3); }
.fill-c4 { fill: var(--c4); }
.fill-panel { fill: rgba(255, 255, 255, 0.03); }
.stroke-ring { stroke: rgba(255, 255, 255, 0.07); }
.stroke-axis { stroke: rgba(255, 255, 255, 0.18); }
.fill-c1-soft { fill: var(--c1); fill-opacity: 0.12; }
.fill-c3-soft { fill: var(--c3); fill-opacity: 0.12; }
.stroke-c1 { stroke: var(--c1); }
.stroke-c2 { stroke: var(--c2); }
.stroke-c3 { stroke: var(--c3); }
.stroke-c4 { stroke: var(--c4); }
.stroke-grid { stroke: rgba(255, 255, 255, 0.07); }
.stroke-dash { stroke: rgba(255, 255, 255, 0.28); }
.stop-c1 { stop-color: var(--c1); }
.stop-c1b { stop-color: var(--c1-hi); }
.stop-c2 { stop-color: var(--c2); }
.stop-c3 { stop-color: var(--c3); }
.stop-c4 { stop-color: var(--c4); }
.stop-c1fade { stop-color: var(--c1); stop-opacity: 0; }
.stop-c2fade { stop-color: var(--c2); stop-opacity: 0.05; }
.stop-c3fade { stop-color: var(--c3); stop-opacity: 0.06; }

/* ---------- 文档类页面 ---------- */

.page-head {
  position: relative;
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(700px 320px at 8% -20%, rgba(77, 141, 255, 0.18), transparent 65%),
    radial-gradient(560px 280px at 92% -10%, rgba(160, 107, 255, 0.14), transparent 62%),
    linear-gradient(180deg, #0b0e15 0%, #07080b 100%);
}

.page-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--grad-hair);
  opacity: 0.7;
}

.page-head h1 { font-size: 34px; margin-bottom: 12px; }
.page-head p { color: var(--text-muted); font-size: 16px; max-width: 46em; }

.doc { padding: 46px 0 70px; }

.doc h2 {
  font-size: 21px;
  margin: 44px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}

.doc h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 1px;
  background: linear-gradient(90deg, var(--c1), var(--c2), transparent);
}

.doc h2:first-child { margin-top: 0; }

.doc h3 { font-size: 16.5px; margin: 26px 0 8px; }

.doc p, .doc li { color: var(--text-muted); font-size: 15px; }
.doc p { margin: 10px 0; }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 7px 0; }
.doc strong { color: var(--text); }

.doc .steps li { color: var(--text-muted); }

.faq {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 20px 22px;
  margin: 14px 0;
  transition: border-color var(--t), box-shadow var(--t);
}

.faq:hover { border-color: rgba(120, 160, 255, 0.3); box-shadow: 0 20px 48px -38px rgba(77, 141, 255, 0.9); }

.faq h3 { margin: 0 0 8px; font-size: 16px; color: var(--text); }
.faq p { margin: 0; }

.toc { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

.toc a {
  font-size: 13.5px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  color: var(--text-muted);
  background: linear-gradient(180deg, rgba(21, 26, 36, 0.8), rgba(12, 15, 21, 0.8));
  transition: color var(--t), border-color var(--t), box-shadow var(--t);
}
.toc a:hover {
  color: var(--text);
  border-color: var(--border-bright);
  box-shadow: 0 10px 24px -18px rgba(77, 141, 255, 1);
  text-decoration: none;
}

.note-inline { font-size: 13.5px; color: var(--text-dim); }

/* ---------- 页脚 ---------- */

.site-footer {
  position: relative;
  border-top: 1px solid var(--border-soft);
  background:
    radial-gradient(700px 300px at 50% 120%, rgba(77, 141, 255, 0.1), transparent 70%),
    linear-gradient(180deg, #0b0e14 0%, #080a0e 100%);
  padding: 44px 0 34px;
  font-size: 14px;
  color: var(--text-dim);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 1px;
  background: var(--grad-hair);
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-bottom: 28px;
}

.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; margin-bottom: 10px; }

.footer-logo {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: block;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 6px 16px -8px rgba(77, 141, 255, 0.9);
}

.footer-col h4 {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  font-weight: 600;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin: 6px 0; }
.footer-col a { color: var(--text-muted); }
.footer-col a:hover { color: var(--text); }

.footer-bottom {
  border-top: 1px solid var(--border-soft);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font-size: 13px;
}

/* 页脚最下方一行：管理后台入口。刻意做得不显眼，但仍然找得到。 */
.footer-admin {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-dim);
}

.footer-admin a { color: var(--text-muted); }
.footer-admin .note-inline { margin-left: 8px; }

/* ---------- 授权查询页 ---------- */

.query-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(560px 260px at 10% -20%, rgba(77, 141, 255, 0.14), transparent 70%),
    var(--grad-panel);
  padding: 24px;
}

.query-label { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 8px; }

.query-row { display: flex; gap: 10px; align-items: stretch; flex-wrap: wrap; }

.query-input {
  flex: 1 1 320px;
  min-width: 0;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--text);
  background: #090b10;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  transition: border-color var(--t), box-shadow var(--t);
}

.query-input::placeholder { color: #5a6473; letter-spacing: 0.02em; }

.query-input:focus {
  outline: none;
  border-color: var(--border-bright);
  box-shadow: 0 0 0 3px rgba(77, 141, 255, 0.18);
}

.query-hint { font-size: 13px; color: var(--text-dim); margin-top: 10px; }

.query-result { margin-top: 20px; border-top: 1px solid var(--border-soft); padding-top: 20px; }

.query-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 15px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(18, 22, 31, 0.9), rgba(10, 13, 18, 0.9));
}

.query-status.is-active { border-color: rgba(69, 214, 164, 0.45); }
.query-status.is-expired { border-color: rgba(255, 166, 64, 0.45); }
.query-status.is-error { border-color: rgba(255, 110, 110, 0.45); }

.query-status strong { font-size: 16px; }
.query-status.is-active strong { color: var(--c-ok); }
.query-status.is-expired strong { color: var(--c3); }
.query-status.is-error strong { color: #ff8f8f; }

.query-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; background: var(--c1); }
.query-status.is-active .query-dot { background: var(--c-ok); box-shadow: 0 0 12px 1px rgba(69, 214, 164, 0.9); }
.query-status.is-expired .query-dot { background: var(--c3); box-shadow: 0 0 12px 1px rgba(255, 166, 64, 0.9); }
.query-status.is-error .query-dot { background: #ff8f8f; box-shadow: 0 0 12px 1px rgba(255, 110, 110, 0.9); }

.query-status-note { color: var(--text-muted); font-size: 14px; margin-left: auto; }

.query-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 20px;
  margin: 18px 0 0;
  padding: 0;
}

.query-facts > div {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(12, 15, 21, 0.7);
  padding: 10px 14px;
}

.query-facts dt { font-size: 12.5px; color: var(--text-dim); margin-bottom: 4px; }
.query-facts dd { margin: 0; font-size: 15px; color: var(--text); font-family: var(--mono); }

.query-subtitle { font-size: 15px; margin: 22px 0 10px; color: var(--text); }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.query-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }

.query-table th,
.query-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-muted);
  vertical-align: top;
}

.query-table th {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  border-bottom-color: var(--border);
  white-space: nowrap;
}

.query-table td.mono { font-family: var(--mono); color: var(--text); white-space: nowrap; }

.query-help { margin-top: 22px; display: grid; gap: 14px; }
.query-help .faq { margin: 0; }

/* ---------- 更新日志时间线（纯 CSS，无图标库） ---------- */

.timeline { list-style: none; margin: 0; padding: 0 0 0 30px; position: relative; }

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c1), var(--c2) 55%, rgba(255, 166, 64, 0.5));
  opacity: 0.55;
}

.timeline-item { position: relative; padding: 0 0 26px; }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--bg);
  background: linear-gradient(140deg, var(--c1), var(--c2));
  box-shadow: 0 0 14px -2px rgba(77, 141, 255, 0.9);
}

.timeline-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }

.timeline-version {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
}

.timeline-date {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
}

.timeline-text { color: var(--text-muted); font-size: 14.5px; }

/* ---------- 下载页信息块 ---------- */

.info-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--grad-panel);
  padding: 20px 22px;
  margin-top: 18px;
}

.info-block h3 { font-size: 15.5px; margin-bottom: 14px; }

.info-grid {
  display: grid;
  gap: 1px;
  background: var(--border-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.info-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 14px;
  background: rgba(12, 15, 21, 0.92);
  padding: 11px 14px;
  font-size: 14px;
}

.info-key { color: var(--text-dim); font-size: 13px; }
.info-val { color: var(--text); word-break: break-all; }
.info-val.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.01em; }

.req-list { list-style: none; padding: 0; margin: 0; font-size: 14.5px; }

.req-list li {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
}

.req-list li:first-child { border-top: 0; }

.req-list .req-mark { flex: none; width: 16px; height: 16px; margin-top: 5px; color: var(--c1-hi); }

/* ---------- 响应式：手机单列 ---------- */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .hero h1 { font-size: 34px; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .price-grid { grid-template-columns: minmax(0, 1fr); }
  .compare { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .chart-split { grid-template-columns: minmax(0, 1fr); gap: 20px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0 0 12px;
    padding-top: 6px;
    border-top: 1px solid var(--border-soft);
  }

  .site-nav.is-open { display: flex; }

  .site-nav a { padding: 10px 12px; font-size: 15px; }
  .site-nav a.nav-cta { margin: 8px 0 0; text-align: center; justify-content: center; }

  .header-inner { flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }

  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }

  .section { padding: 50px 0; }
  .hero { padding: 52px 0 44px; }
  .hero h1 { font-size: 28px; }
  .page-head h1 { font-size: 25px; }
  .section h2 { font-size: 22px; }
  .price-amount .num { font-size: 34px; }

  .btn { width: 100%; justify-content: center; }
  .hero-actions .btn { width: 100%; }
  .mock-canvas { height: 200px; }
  .chart-figure { padding: 16px; }

  .query-facts { grid-template-columns: minmax(0, 1fr); }
  .info-row { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .timeline { padding-left: 26px; }
  .timeline-item::before { left: -26px; }
  .query-status-note { margin-left: 0; }
}