/* ============================================================
   易倍竞界 · Site Kit 共享样式
   ============================================================ */

/* ---------- 1. CSS 变量 ---------- */
:root {
  --color-bg: #0B1026;
  --color-bg-deep: #070A1A;
  --color-bg-card: #1A2140;
  --color-bg-elevated: #232B52;
  --color-primary: #7B2FF7;
  --color-accent: #39FF88;
  --color-danger: #E34234;
  --color-text: #F2F5FF;
  --color-text-sub: #A8B3D9;
  --color-text-dim: #6B77A3;
  --glow-green: rgba(57, 255, 136, 0.3);
  --glow-purple: rgba(123, 47, 247, 0.35);
  --grad-purple-green: linear-gradient(135deg, #7B2FF7, #39FF88);
  --grad-red-purple: linear-gradient(90deg, #E34234, #7B2FF7);
  --radius-card: 16px;
  --radius-block: 12px;
  --radius-pill: 999px;
  --radius-tag: 8px;
  --font-headline: "Chakra Petch", "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --header-rail-width: 200px;
  --header-mobile-h: 64px;
  --content-max: 1280px;
  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 600ms cubic-bezier(0.22, 1, 0.36, 1);
  --z-skip: 1000;
  --z-header: 100;
  --z-backdrop: 90;
  --z-nav: 200;
}

/* ---------- 2. Reset 与基础排版 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

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

body {
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-variant-numeric: tabular-nums;
}

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

ul[class], ol[class] { list-style: none; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}
a:hover { color: #70FFA8; }

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
  text-wrap: balance;
}

p { color: var(--color-text-sub); }
hr { border: none; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(123, 47, 247, 0.6);
  color: var(--color-text);
}

[id] { scroll-margin-top: 72px; }
@media (min-width: 1024px) {
  [id] { scroll-margin-top: 24px; }
}

/* ---------- 3. 布局容器 ---------- */
.content-wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 28px;
}

.main-content {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  min-height: 60vh;
  padding: 32px 28px 72px;
}

@media (max-width: 1023.98px) {
  body {
    padding-top: var(--header-mobile-h);
  }
  .main-content {
    padding: 28px 20px 56px;
  }
}

@media (max-width: 767.98px) {
  .content-wrap,
  .main-content {
    padding-inline: 16px;
  }
  .main-content {
    padding: 24px 16px 48px;
  }
}

@media (min-width: 1024px) {
  body {
    padding-left: var(--header-rail-width);
  }
  .main-content {
    padding-top: 44px;
  }
}

/* ---------- 4. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: var(--z-skip);
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--color-accent);
  color: #04120A;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 24px rgba(57, 255, 136, 0.45);
  transition: top 220ms ease;
}
.skip-link:hover { color: #04120A; }
.skip-link:focus-visible { top: 16px; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text);
  box-shadow: 0 4px 20px rgba(123, 47, 247, 0.35);
}
.btn-primary:hover {
  background: #9150F9;
  color: var(--color-text);
  box-shadow: 0 6px 28px rgba(123, 47, 247, 0.5);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(168, 179, 217, 0.35);
  color: var(--color-text-sub);
}
.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 18px rgba(57, 255, 136, 0.18);
}

.btn-glow {
  background: var(--grad-purple-green);
  color: #04120A;
  box-shadow: 0 4px 20px rgba(57, 255, 136, 0.25);
}
.btn-glow:hover {
  color: #04120A;
  box-shadow: 0 6px 28px rgba(57, 255, 136, 0.45);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* ---------- 6. 章节头与内页页头 ---------- */
.section-head { margin-bottom: 28px; }

.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-headline);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-purple-green);
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--color-text);
}

.section-sub {
  margin-top: 8px;
  max-width: 60ch;
  font-size: 15px;
  color: var(--color-text-sub);
}

.page-header {
  margin-bottom: 32px;
  padding: 8px 0 24px;
}

.page-title {
  font-size: clamp(30px, 4.5vw, 44px);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.15;
}

.page-excerpt {
  margin-top: 10px;
  max-width: 64ch;
  font-size: 16px;
  color: var(--color-text-sub);
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 12px 0;
  font-size: 13px;
  color: var(--color-text-dim);
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb li + li::before {
  content: "/";
  font-family: var(--font-headline);
  color: rgba(168, 179, 217, 0.3);
}
.breadcrumb a {
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb li[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- 8. 网格 ---------- */
.data-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-11 { grid-column: span 11; }
.span-12 { grid-column: span 12; }

@media (max-width: 1023.98px) and (min-width: 768px) {
  .data-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .data-grid > .span-1,
  .data-grid > .span-2,
  .data-grid > .span-3,
  .data-grid > .span-4,
  .data-grid > .span-5 {
    grid-column: span 1;
  }
  .data-grid > .span-6 {
    grid-column: span 2;
  }
}

@media (max-width: 767.98px) {
  .data-grid,
  .grid {
    grid-template-columns: 1fr;
  }
  .data-grid > .span-1,
  .data-grid > .span-2,
  .data-grid > .span-3,
  .data-grid > .span-4,
  .data-grid > .span-5,
  .data-grid > .span-6,
  .grid > .span-1,
  .grid > .span-2,
  .grid > .span-3,
  .grid > .span-4,
  .grid > .span-5,
  .grid > .span-6,
  .grid > .span-7,
  .grid > .span-8,
  .grid > .span-9,
  .grid > .span-10,
  .grid > .span-11,
  .grid > .span-12 {
    grid-column: span 1;
  }
}

/* ---------- 9. 卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--color-bg-card);
  border: 1px solid rgba(168, 179, 217, 0.14);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}
.card[data-accent="purple"] { border-top: 3px solid var(--color-primary); }
.card[data-accent="green"] { border-top: 3px solid var(--color-accent); }
.card[data-accent="red"] { border-top: 3px solid var(--color-danger); }
.card:hover {
  border-color: rgba(57, 255, 136, 0.32);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.32), 0 0 24px rgba(57, 255, 136, 0.06);
  transform: translateY(-3px);
}

.card-tilt { transform: rotate(-1.2deg); }
.card-tilt:hover { transform: rotate(-1.2deg) translateY(-3px); }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.card-title {
  font-family: var(--font-headline);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}
.card-body {
  flex: 1;
  font-size: 14px;
  color: var(--color-text-sub);
}
.card-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(168, 179, 217, 0.12);
}

/* 数值仪表卡 */
.stat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px;
  background: var(--color-bg-card);
  border: 1px solid rgba(168, 179, 217, 0.14);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-card);
}
.stat-card[data-accent="green"] { border-top-color: var(--color-accent); }
.stat-card[data-accent="red"] { border-top-color: var(--color-danger); }
.stat-card[data-accent="purple"] { border-top-color: var(--color-primary); }
.stat-value {
  font-family: var(--font-headline);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text-sub);
}
.stat-desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

/* ---------- 10. 状态、进度、标签、分割线 ---------- */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  font-family: var(--font-headline);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: rgba(57, 255, 136, 0.08);
  border: 1px solid rgba(57, 255, 136, 0.3);
  border-radius: var(--radius-pill);
}
.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}
.status-pill[data-status="live"]::before {
  animation: pulse-dot 1.4s ease-in-out infinite;
}
.status-pill[data-status="off"] {
  color: var(--color-text-dim);
  background: rgba(168, 179, 217, 0.06);
  border-color: rgba(168, 179, 217, 0.2);
}
.status-pill[data-status="off"]::before { box-shadow: none; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.82); }
}

.progress {
  height: 6px;
  border-radius: var(--radius-pill);
  background: rgba(168, 179, 217, 0.14);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--grad-purple-green);
  box-shadow: 0 0 12px rgba(57, 255, 136, 0.5);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: #C6A4FF;
  background: rgba(123, 47, 247, 0.14);
  border: 1px solid rgba(123, 47, 247, 0.3);
  border-radius: var(--radius-tag);
}
.tag-red {
  color: #FF9388;
  background: rgba(227, 66, 52, 0.12);
  border-color: rgba(227, 66, 52, 0.3);
}
.tag-green {
  color: var(--color-accent);
  background: rgba(57, 255, 136, 0.08);
  border-color: rgba(57, 255, 136, 0.3);
}

.rule {
  height: 1px;
  margin: 24px 0;
  background: linear-gradient(90deg, rgba(123, 47, 247, 0.45), rgba(57, 255, 136, 0.3), transparent);
  border: none;
}
.rule-red {
  background: linear-gradient(90deg, var(--color-danger), var(--color-primary), transparent);
}

/* ---------- 11. 手风琴 ---------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.accordion details {
  background: var(--color-bg-card);
  border: 1px solid rgba(168, 179, 217, 0.14);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.accordion details[open] {
  border-color: rgba(123, 47, 247, 0.4);
  box-shadow: 0 0 20px rgba(123, 47, 247, 0.08);
}
.accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-family: var(--font-headline);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: "+";
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 18px;
  color: var(--color-accent);
  background: rgba(57, 255, 136, 0.08);
  border: 1px solid rgba(57, 255, 136, 0.25);
  border-radius: 50%;
  transition: transform var(--transition-base), background-color var(--transition-fast);
}
.accordion details[open] summary::after {
  transform: rotate(45deg);
  background: rgba(57, 255, 136, 0.18);
}
.accordion .accordion-body {
  padding: 0 22px 20px;
  font-size: 14px;
  color: var(--color-text-sub);
}

/* ---------- 12. 图片框与框景窗口 ---------- */
.img-frame {
  position: relative;
  display: block;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(123, 47, 247, 0.18), rgba(57, 255, 136, 0.06));
  border: 1px solid rgba(168, 179, 217, 0.16);
}
.img-frame[data-ratio="16-9"] { aspect-ratio: 16 / 9; }
.img-frame[data-ratio="4-3"] { aspect-ratio: 4 / 3; }
.img-frame[data-ratio="1-1"] { aspect-ratio: 1 / 1; }
.img-frame[data-ratio="3-4"] { aspect-ratio: 3 / 4; }
.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}
.img-frame:hover > img { transform: scale(1.04); }
.img-frame[data-placeholder] {
  display: flex;
  align-items: center;
  justify-content: center;
}
.img-frame[data-placeholder]::before {
  content: "IMAGE";
  position: relative;
  z-index: 1;
  font-family: var(--font-headline);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: rgba(168, 179, 217, 0.35);
}
.img-frame[data-placeholder]::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(57, 255, 136, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 136, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.frame-window {
  position: relative;
  padding: 28px;
  background: linear-gradient(160deg, rgba(26, 33, 64, 0.7), rgba(11, 16, 38, 0.92));
  border: 1px solid rgba(168, 179, 217, 0.16);
  border-radius: var(--radius-card);
  box-shadow: inset 0 0 40px rgba(123, 47, 247, 0.06);
}
.frame-window::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(168, 179, 217, 0.15);
  border-radius: calc(var(--radius-card) - 6px);
  pointer-events: none;
}
.frame-window-inner {
  position: relative;
  z-index: 1;
}

/* ---------- 13. 滚动显现 ---------- */
.js-enabled [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms cubic-bezier(0.22, 1, 0.36, 1), transform 640ms cubic-bezier(0.22, 1, 0.36, 1);
}
.js-enabled [data-reveal][data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 14. 头部 ---------- */
.site-header {
  position: relative;
}

.header-mobile {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-mobile-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px 0 18px;
  background: rgba(11, 16, 38, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(123, 47, 247, 0.28);
  z-index: var(--z-header);
}

.header-mobile .site-brand .brand-mark {
  width: 34px;
  height: 34px;
}
.header-mobile .site-brand .brand-name { font-size: 15px; }
.header-mobile .site-brand .brand-sub { font-size: 9px; }

.mobile-progress {
  position: absolute;
  inset: auto 0 -1px 0;
  height: 2px;
  background: rgba(168, 179, 217, 0.08);
  pointer-events: none;
}
.mobile-progress::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform-origin: left center;
  transform: scaleX(var(--progress, 0));
  box-shadow: 0 0 12px rgba(57, 255, 136, 0.4);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
}
.site-brand:hover { color: var(--color-text); }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  color: var(--color-primary);
  filter: drop-shadow(0 0 6px rgba(123, 47, 247, 0.55));
}
.site-brand:hover .brand-mark { color: #9150F9; }

.brand-svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.25;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-headline);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--color-text);
}

.brand-sub {
  margin-top: 2px;
  font-family: var(--font-headline);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  white-space: nowrap;
}

/* 移动汉堡按钮 */
.nav-toggle {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: rgba(123, 47, 247, 0.12);
  border: 1px solid rgba(123, 47, 247, 0.35);
  border-radius: var(--radius-block);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.nav-toggle:hover {
  background: rgba(123, 47, 247, 0.22);
  border-color: var(--color-accent);
}

.toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 遮罩 */
.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-backdrop);
  background: rgba(4, 6, 16, 0.66);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}
body.nav-open .nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

/* 侧边轨道 */
.header-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--header-rail-width);
  z-index: var(--z-nav);
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border-right: 1px solid rgba(123, 47, 247, 0.2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.header-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 0%, rgba(123, 47, 247, 0.14), transparent 42%),
    radial-gradient(circle at 15% 100%, rgba(57, 255, 136, 0.05), transparent 40%);
  pointer-events: none;
}
.header-rail > * {
  position: relative;
  z-index: 1;
}

.rail-brand {
  padding: 22px 14px 16px;
  background: rgba(11, 16, 38, 0.6);
  border-bottom: 1px solid rgba(168, 179, 217, 0.1);
}
.rail-brand .brand-name { font-size: 17px; }
.rail-brand .brand-mark { width: 38px; height: 38px; }

.site-nav {
  flex: 1 1 auto;
  overflow-x: hidden;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 10px;
}

.nav-item { position: relative; }

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--color-text-sub);
  font-family: var(--font-headline);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.nav-link:hover {
  color: var(--color-text);
  background: rgba(123, 47, 247, 0.14);
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleY(0.3);
  width: 3px;
  height: 55%;
  border-radius: 0 3px 3px 0;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.nav-link::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border: 1px solid rgba(168, 179, 217, 0.3);
  border-radius: 50%;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.nav-link:hover::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(0.6);
}
.nav-link:hover::after { border-color: var(--color-accent); }

.nav-link[aria-current="page"] {
  color: var(--color-text);
  background: linear-gradient(90deg, rgba(123, 47, 247, 0.26), rgba(57, 255, 136, 0.05));
  border-color: rgba(123, 47, 247, 0.2);
}
.nav-link[aria-current="page"]::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.5);
}
.nav-link[aria-current="page"]::after {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.8);
}
.nav-link[aria-current="page"] .nav-index { color: var(--color-accent); }

.nav-index {
  min-width: 20px;
  font-family: var(--font-headline);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
  transition: color var(--transition-fast);
}

.nav-label {
  flex: 1;
  white-space: nowrap;
}

/* 快捷面板 */
.quick-panel {
  margin: 14px 12px 18px;
  padding: 14px 16px;
  background:
    repeating-linear-gradient(-45deg,
      rgba(123, 47, 247, 0.07) 0,
      rgba(123, 47, 247, 0.07) 1px,
      transparent 1px,
      transparent 7px),
    rgba(26, 33, 64, 0.55);
  border: 1px solid rgba(168, 179, 217, 0.12);
  border-radius: var(--radius-block);
}
.quick-title {
  margin-bottom: 10px;
  font-family: var(--font-headline);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}
.quick-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.quick-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: 13px;
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.quick-link::before {
  content: "";
  width: 4px;
  height: 4px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary);
  transition: background-color var(--transition-fast);
}
.quick-link:hover {
  color: var(--color-accent);
  padding-left: 4px;
}
.quick-link:hover::before { background: var(--color-accent); }

/* 状态区 */
.rail-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 14px 16px;
  border-top: 1px solid rgba(168, 179, 217, 0.08);
  font-size: 12px;
  color: var(--color-text-dim);
}
.status-dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px rgba(57, 255, 136, 0.8);
  animation: pulse-dot 2.4s ease-in-out infinite;
}
.status-text { white-space: nowrap; }

/* 侧栏滚动进度 */
.rail-progress {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 3px;
  background: rgba(168, 179, 217, 0.08);
  pointer-events: none;
}
.rail-progress::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  transform-origin: center top;
  transform: scaleY(var(--progress, 0));
  box-shadow: 0 0 14px rgba(57, 255, 136, 0.45);
}

/* 桌面端轨道形态 */
@media (min-width: 1024px) {
  .header-rail {
    width: var(--header-rail-width);
  }
  .site-nav {
    overflow-y: auto;
  }
  .header-mobile {
    display: none;
  }
  .nav-backdrop {
    display: none;
  }
}

/* 移动端抽屉形态 */
@media (max-width: 1023.98px) {
  .header-rail {
    top: var(--header-mobile-h);
    width: 280px;
    max-width: 86vw;
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(-105%);
    box-shadow: none;
    transition: transform var(--transition-base), box-shadow var(--transition-base), visibility 0s linear var(--transition-base);
  }
  .header-rail[data-open] {
    visibility: visible;
    transform: translateX(0);
    box-shadow: 24px 0 48px rgba(0, 0, 0, 0.45), 0 0 32px rgba(123, 47, 247, 0.18);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
  }
  .site-nav {
    flex: 0 0 auto;
    overflow: visible;
  }
  .rail-brand {
    display: none;
  }
  .rail-progress {
    display: none;
  }
  body.nav-open {
    overflow: hidden;
    overscroll-behavior: none;
  }
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 72px;
  padding: 56px 0 0;
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(123, 47, 247, 0.2);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-danger), var(--color-primary) 40%, var(--color-accent));
  opacity: 0.75;
}
.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 85% 120%, rgba(123, 47, 247, 0.16), transparent 55%),
    radial-gradient(ellipse at 5% -10%, rgba(57, 255, 136, 0.045), transparent 45%);
  pointer-events: none;
}
.site-footer .content-wrap {
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.6fr 1.6fr 1.8fr 2fr;
  gap: 40px;
  padding-bottom: 40px;
}

@media (max-width: 1023.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 767.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-brand {
  align-items: flex-start;
}
.footer-brand .brand-name {
  font-size: 20px;
  letter-spacing: 0.06em;
}
.footer-brand .brand-sub {
  font-size: 10px;
}

.footer-trust {
  margin-top: 16px;
  max-width: 44ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-text-dim);
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid rgba(57, 255, 136, 0.25);
  border-radius: var(--radius-pill);
  background: rgba(57, 255, 136, 0.06);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}
.cert-badge::before {
  content: "◆";
  font-size: 7px;
  color: var(--color-accent);
}

.footer-col {
  display: flex;
  flex-direction: column;
}
.footer-title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  position: relative;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-sub);
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-purple-green);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-sub);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.footer-list a::before {
  content: "";
  width: 3px;
  height: 3px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}
.footer-list a:hover {
  color: var(--color-accent);
  transform: translateX(3px);
}
.footer-list a:hover::before {
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(57, 255, 136, 0.8);
}

.footer-contact-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.contact-list {
  gap: 12px;
}
.contact-list li {
  display: flex;
  gap: 10px;
  overflow-wrap: anywhere;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-sub);
}
.footer-label {
  flex-shrink: 0;
  min-width: 46px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  padding-top: 1px;
}

.footer-connect {
  margin-top: 18px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0 22px;
  border-top: 1px solid rgba(168, 179, 217, 0.1);
}
.footer-copy,
.footer-icp a {
  font-size: 13px;
  color: var(--color-text-dim);
}
.footer-icp a {
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-icp a:hover { color: var(--color-text-sub); }

/* ---------- 16. 工具类 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 17. 滚动条 ---------- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(123, 47, 247, 0.4);
  border: 2px solid var(--color-bg);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(57, 255, 136, 0.4);
}

/* ---------- 18. 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
  .js-enabled [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .status-dot {
    animation: none;
  }
}