/* ==========================================================================
   新利赛场 · 共享外壳 Site Kit  (/assets/site.css)
   框架轨道式页头 + 赛场灯带式页脚
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

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

:root {
  /* —— 色板：深空蓝 / 深墨 承重，暖纸留白，荧光绿与琥珀少量高亮 —— */
  --ink-900: #07111F;
  --ink-800: #0F1B2D;
  --ink-700: #13233A;
  --paper: #F1E6D2;
  --paper-bright: #FFF8EA;
  --lime: #B8FF3D;
  --amber: #FFB84D;
  --cyan: #54D6FF;
  --mist: #8DA2BD;
  --flag-yellow: #FFD84D;
  --flag-red: #FF5C6C;
  --deep-green: #173A2B;

  --line: rgba(141, 162, 189, 0.20);
  --line-soft: rgba(141, 162, 189, 0.12);
  --line-strong: rgba(141, 162, 189, 0.38);

  /* —— 字体：现代无衬线标题 / 高可读正文 / 等宽数字 —— */
  --font-display: 'Inter', 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;

  /* —— 版面 —— */
  --gutter: clamp(20px, 5vw, 72px);
  --shell-max: 1400px;
  --cols: 12;
  --grid-gap: clamp(16px, 2vw, 26px);

  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 26px;
  --r-xl: 36px;
  --r-pill: 999px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 180ms;
  --t-mid: 260ms;
}

/* ------------------------------ reset / 基础 ------------------------------ */

body {
  margin: 0;
  background-color: var(--ink-900);
  color: var(--paper-bright);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.94rem + 0.2vw, 1.125rem);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
  color: var(--paper-bright);
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--lime); }

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

strong, b { font-weight: 700; }
small { font-size: 0.82em; }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
  font-variant-numeric: tabular-nums;
}

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

button { font: inherit; color: inherit; }

::selection { background: var(--lime); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

#main-content {
  display: block;
  scroll-margin-top: 96px;
  outline: none;
}

/* --------------------------------- 跳至正文 -------------------------------- */

.skip-link {
  position: absolute;
  top: 10px;
  left: var(--gutter);
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  background: var(--lime);
  color: var(--ink-900);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-240%);
  transition: transform var(--t-fast) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--ink-900);
  outline-offset: 4px;
}

/* ------------------------------- 版面工具类 ------------------------------- */

.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  gap: var(--grid-gap);
}

.section {
  position: relative;
  padding-block: clamp(52px, 7vw, 112px);
}
.section-tight { padding-block: clamp(28px, 4vw, 64px); }

.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  color: var(--paper);
}
.prose > * + * { margin-top: 1em; }
.prose h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  margin: 1.9em 0 0.6em;
}
.prose h3 {
  font-size: 1.16rem;
  margin: 1.5em 0 0.5em;
}
.prose ul { list-style: disc; padding-left: 1.15em; }
.prose ol { list-style: decimal; padding-left: 1.15em; }
.prose li { margin-bottom: 0.35em; }
.prose a { color: var(--cyan); }
.prose blockquote {
  margin: 1.4em 0;
  padding: 14px 20px;
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(184, 255, 61, 0.06);
  color: var(--paper);
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--mist); }
.text-lime { color: var(--lime); }
.text-amber { color: var(--amber); }
.text-cyan { color: var(--cyan); }

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

/* --------------------------------- 标题族 --------------------------------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--lime);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--lime));
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0 0 0.5em;
  color: var(--paper-bright);
}

.lead {
  font-size: clamp(1.05rem, 1rem + 0.35vw, 1.3rem);
  line-height: 1.65;
  color: var(--mist);
  max-width: 62ch;
}

/* --------------------------------- 按钮系统 -------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline-offset: 3px; }

.btn-primary {
  background: var(--lime);
  color: var(--ink-900);
  box-shadow: 0 0 0 1px rgba(184, 255, 61, 0.40), 0 12px 28px -16px rgba(184, 255, 61, 0.95);
}
.btn-primary:hover {
  background: #c8ff66;
  color: var(--ink-900);
  box-shadow: 0 0 0 1px rgba(184, 255, 61, 0.75), 0 16px 34px -14px rgba(184, 255, 61, 0.9);
}

.btn-ghost {
  background: rgba(255, 248, 234, 0.03);
  border-color: var(--line-strong);
  color: var(--paper-bright);
}
.btn-ghost:hover {
  background: rgba(84, 214, 255, 0.09);
  border-color: var(--cyan);
  color: var(--paper-bright);
  box-shadow: 0 0 24px -10px rgba(84, 214, 255, 0.9);
}

.btn-amber {
  background: var(--amber);
  color: var(--ink-900);
  box-shadow: 0 12px 28px -16px rgba(255, 184, 77, 0.95);
}
.btn-amber:hover { background: #ffc76e; color: var(--ink-900); }

.btn-sm { padding: 8px 15px; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* --------------------------------- 状态胶囊 -------------------------------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid rgba(184, 255, 61, 0.42);
  border-radius: var(--r-pill);
  background: rgba(184, 255, 61, 0.10);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  line-height: 1.7;
  white-space: nowrap;
}
.pill-amber {
  border-color: rgba(255, 184, 77, 0.50);
  background: rgba(255, 184, 77, 0.12);
  color: var(--amber);
}
.pill-cyan {
  border-color: rgba(84, 214, 255, 0.50);
  background: rgba(84, 214, 255, 0.12);
  color: var(--cyan);
}
.pill-yellow {
  border-color: rgba(255, 216, 77, 0.52);
  background: rgba(255, 216, 77, 0.14);
  color: var(--flag-yellow);
}
.pill-red {
  border-color: rgba(255, 92, 108, 0.52);
  background: rgba(255, 92, 108, 0.14);
  color: var(--flag-red);
}

/* --------------------------------- 数据卡 --------------------------------- */

.card {
  position: relative;
  padding: clamp(20px, 2.4vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, rgba(15, 27, 45, 0.96), rgba(9, 19, 33, 0.96));
  color: var(--paper-bright);
  transition:
    transform var(--t-mid) var(--ease),
    border-color var(--t-mid) var(--ease),
    box-shadow var(--t-mid) var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 184, 77, 0.42);
  box-shadow: 0 22px 48px -30px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(255, 184, 77, 0.12);
}

.card-paper {
  background: var(--paper);
  border-color: rgba(15, 27, 45, 0.12);
  color: var(--ink-800);
}
.card-paper h2,
.card-paper h3,
.card-paper h4 { color: var(--ink-800); }

/* ------------------------------- 图片容器基础 ------------------------------ */

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid rgba(141, 162, 189, 0.18);
  border-radius: var(--r-lg);
  background:
    radial-gradient(100% 100% at 18% 8%, rgba(84, 214, 255, 0.26), transparent 62%),
    radial-gradient(84% 92% at 92% 92%, rgba(184, 255, 61, 0.20), transparent 66%),
    linear-gradient(160deg, var(--ink-800), var(--ink-900));
  isolation: isolate;
}
.media-frame img,
.media-frame svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.34;
  mix-blend-mode: screen;
  background-image:
    linear-gradient(rgba(141, 162, 189, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 162, 189, 0.16) 1px, transparent 1px);
  background-size: 44px 44px;
}
.media-frame[data-ratio="16-9"] { aspect-ratio: 16 / 9; }
.media-frame[data-ratio="3-2"]  { aspect-ratio: 3 / 2; }
.media-frame[data-ratio="4-1"]  { aspect-ratio: 4 / 1; }
.media-frame[data-ratio="1-1"]  { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="3-4"]  { aspect-ratio: 3 / 4; }

/* --------------------------------- 面包屑 --------------------------------- */

.breadcrumbs {
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: rgba(141, 162, 189, 0.45);
}
.breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--paper-bright); }

/* ==========================================================================
   页头 · 框架轨道
   ========================================================================== */

.site-frame {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(7, 17, 31, 0.93);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(16px);
  -webkit-backdrop-filter: saturate(140%) blur(16px);
  transition: background-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.site-frame.is-stuck {
  background: rgba(6, 14, 26, 0.99);
  box-shadow: 0 20px 46px -24px rgba(0, 0, 0, 0.95);
}

.frame-progress {
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  overflow: hidden;
  background: var(--line-soft);
}
.frame-progress-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--lime) 68%, var(--amber));
  box-shadow: 0 0 14px rgba(184, 255, 61, 0.55);
}

.frame-inner { position: relative; }

.frame-head {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  min-height: 74px;
  padding-block: 10px;
}

/* —— 品牌锁 —— */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
  color: var(--paper-bright);
  text-decoration: none;
}
.brand:hover { color: var(--paper-bright); }

.brand-glyph {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--ink-900) 0 34%, transparent 35%),
    conic-gradient(from 200deg, var(--lime), var(--cyan), var(--amber), var(--lime));
  box-shadow: 0 0 18px -2px rgba(184, 255, 61, 0.55);
}

.brand-lockup {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
}
.brand-name {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper-bright);
}
.brand-divider {
  color: var(--lime);
  font-weight: 700;
  opacity: 0.8;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--mist);
}

/* —— 主导航：轨道刻度 —— */
.frame-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-list::-webkit-scrollbar { display: none; }

.nav-item { flex: 0 0 auto; }

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 13px;
  border-radius: var(--r-pill);
  color: var(--mist);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  transition:
    color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}
.nav-link:hover {
  color: var(--paper-bright);
  background: rgba(84, 214, 255, 0.09);
}
.nav-link:focus-visible { outline-offset: 1px; }

.nav-num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: rgba(84, 214, 255, 0.62);
  transition: color var(--t-fast) var(--ease);
}
.nav-link:hover .nav-num { color: var(--cyan); }

.nav-label { display: inline-block; }

.nav-link[aria-current="page"] {
  color: var(--paper-bright);
  background: rgba(184, 255, 61, 0.11);
  box-shadow: inset 0 0 0 1px rgba(184, 255, 61, 0.42);
}
.nav-link[aria-current="page"] .nav-num { color: var(--lime); }

.frame-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
}

/* —— 移动开关 —— */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 16px;
  border: 1px solid rgba(184, 255, 61, 0.35);
  border-radius: var(--r-pill);
  background: rgba(184, 255, 61, 0.08);
  color: var(--paper-bright);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.nav-toggle:hover {
  background: rgba(184, 255, 61, 0.16);
  border-color: rgba(184, 255, 61, 0.62);
}

.nav-toggle-icon {
  display: grid;
  gap: 5px;
  width: 16px;
}
.nav-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--lime);
  transition: transform var(--t-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ==========================================================================
   页脚 · 赛场灯带
   ========================================================================== */

.site-foot {
  position: relative;
  margin-top: clamp(64px, 9vw, 140px);
  padding-top: clamp(44px, 6vw, 80px);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(84, 214, 255, 0.14), transparent 58%),
    radial-gradient(90% 80% at 6% 0%, rgba(184, 255, 61, 0.08), transparent 55%),
    linear-gradient(180deg, #0B1727 0%, #060E1A 78%);
  color: var(--paper-bright);
}
.site-foot::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--lime) 46%, var(--amber));
  opacity: 0.9;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr 0.9fr 1.3fr;
  gap: clamp(24px, 3.4vw, 56px);
  padding-bottom: clamp(32px, 4vw, 56px);
}

.foot-brand { min-width: 0; }
.foot-brand .brand { margin-bottom: 22px; }

.foot-summary {
  margin: 0 0 10px;
  max-width: 26ch;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1rem + 0.5vw, 1.25rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper-bright);
}

.foot-note {
  margin: 0 0 22px;
  max-width: 30ch;
  font-size: 0.85rem;
  color: var(--mist);
}

.foot-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.foot-col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.foot-col-title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.foot-links {
  display: grid;
  gap: 11px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.foot-link {
  display: inline-block;
  color: var(--mist);
  font-size: 0.94rem;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.foot-link:hover {
  color: var(--paper-bright);
  transform: translateX(3px);
}
.foot-link:focus-visible { outline-offset: 2px; }

.foot-contact { min-width: 0; }

.contact-list {
  display: grid;
  gap: 14px;
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}
.contact-item {
  display: grid;
  gap: 2px;
}
.contact-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.contact-value {
  font-family: var(--font-mono);
  font-size: 0.94rem;
  color: var(--paper-bright);
  word-break: break-word;
}
.contact-item:last-child .contact-value {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
}

.contact-note {
  margin: 0;
  max-width: 34ch;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--mist);
}

.foot-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  padding-block: 22px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--mist);
}

.foot-copy {
  margin: 0;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.legal-link {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.legal-link:hover { color: var(--lime); }

.foot-icp {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: rgba(141, 162, 189, 0.78);
}

/* ==========================================================================
   滚动显现（JS 添加 .js 后生效，无 JS 时内容始终可见）
   ========================================================================== */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1279px) {
  .nav-link { padding: 9px 10px; font-size: 0.865rem; }
  .frame-head { gap: 12px; }
}

@media (max-width: 1199px) {
  .frame-actions .btn { padding: 10px 15px; font-size: 0.82rem; }
  .frame-actions .btn-ghost { display: none; }
}

@media (max-width: 1079px) {
  .nav-toggle { display: inline-flex; }
  .frame-actions { display: none; }

  .frame-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    padding: 14px var(--gutter) 26px;
    background: linear-gradient(180deg, #0F1B2D 0%, #091322 100%);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px -24px rgba(0, 0, 0, 0.95);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition:
      opacity var(--t-fast) var(--ease),
      transform var(--t-fast) var(--ease),
      visibility var(--t-fast) var(--ease);
  }
  .frame-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    overflow: visible;
  }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 16px;
    border-radius: 16px;
    font-size: 1rem;
    background: rgba(255, 248, 234, 0.03);
  }
  .nav-link[aria-current="page"] {
    background: rgba(184, 255, 61, 0.12);
  }

  body[data-nav-open="true"] { overflow: hidden; }
}

@media (max-width: 1023px) {
  .grid { --cols: 8; }

  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-contact { grid-column: 1 / -1; }
  .foot-icp { margin-left: 0; width: 100%; }
}

@media (max-width: 639px) {
  .grid { --cols: 4; }

  .frame-head { min-height: 64px; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .foot-base {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .brand-sub,
  .brand-divider { display: none; }
  .frame-head { gap: 10px; }
  .nav-toggle { padding: 8px 13px; }
}

/* ==========================================================================
   动效克制声明
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .btn:hover,
  .card:hover,
  .foot-link:hover { transform: none; }
}