/* ==========================================================================
   猫头鹰体育 · Site Kit 共享样式 /assets/site.css
   夜间观赛室 × 档案系统：深墨蓝底、切角画板、等宽编号、琥珀指向
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #0A1526;
  --charcoal: #14181F;
  --panel: #111D2F;
  --paper: #F2E7D0;
  --amber: #F0A63A;
  --amber-ink: #8A4A12;
  --teal: #35E0C2;
  --rust: #E35B32;
  --mist: #9EACBD;
  --brown: #2A2119;
  --success: #63D68E;

  --line: rgba(158, 172, 189, 0.20);
  --line-soft: rgba(158, 172, 189, 0.12);
  --line-strong: rgba(158, 172, 189, 0.38);
  --amber-soft: rgba(240, 166, 58, 0.14);
  --teal-soft: rgba(53, 224, 194, 0.12);

  --font-display: "Space Grotesk", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --header-h: 76px;
  --cut: 14px;
  --radius-s: 4px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 240ms;
}

@media (max-width: 640px) {
  :root { --header-h: 64px; }
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(1040px 540px at 84% -10%, rgba(240, 166, 58, 0.15), transparent 62%),
    radial-gradient(760px 420px at 4% 2%, rgba(53, 224, 194, 0.09), transparent 60%),
    repeating-linear-gradient(0deg, rgba(158, 172, 189, 0.05) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(90deg, rgba(158, 172, 189, 0.05) 0 1px, transparent 1px 76px);
  background-repeat: no-repeat, no-repeat, repeat, repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

h1 { font-size: clamp(2.35rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.7rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); letter-spacing: -0.01em; }

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

a { color: var(--amber); text-underline-offset: 3px; }
a:hover { color: #ffbb5e; }

ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

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

button { font: inherit; color: inherit; }

strong { font-weight: 700; color: #ffffff; }

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 2rem 0;
}

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

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

/* ---------- 3. 通用工具 ---------- */
.container {
  width: min(100% - 2.5rem, 1240px);
  margin-inline: auto;
}

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

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.skip-link {
  position: fixed;
  top: -200px;
  left: 16px;
  z-index: 160;
  padding: 0.7rem 1.15rem;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: var(--radius-s);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
  transition: top 200ms var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { top: 12px; color: var(--ink); }

/* ---------- 4. 页头 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(10, 21, 38, 0.94) 0%, rgba(10, 21, 38, 0.62) 58%, rgba(10, 21, 38, 0) 100%);
  border-bottom: 1px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(20, 24, 31, 0.97);
  border-bottom-color: rgba(240, 166, 58, 0.34);
  box-shadow: 0 18px 40px rgba(4, 9, 17, 0.55);
  backdrop-filter: blur(10px);
}

.header-inner {
  width: min(100% - 2.5rem, 1240px);
  margin-inline: auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1.8vw, 1.6rem);
  position: relative;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--paper);
}
.brand:hover { color: var(--paper); }

.brand-mark {
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--ink) 0 18%, var(--amber) 22% 46%, rgba(240, 166, 58, 0.22) 50% 66%, transparent 70%),
    var(--ink);
  box-shadow: inset 0 0 0 1px rgba(240, 166, 58, 0.6), 0 0 20px rgba(240, 166, 58, 0.22);
}
.brand-mark::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 8px; height: 8px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px rgba(53, 224, 194, 0.85), 0 0 10px rgba(53, 224, 194, 0.55);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
  margin-top: 0.18rem;
}

/* 导航 */
.nav { margin-left: auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.3vw, 1.3rem);
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.42rem;
  padding: 0.55rem 0.2rem;
  font-size: 0.94rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
.nav-link__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: rgba(158, 172, 189, 0.7);
  transition: color var(--dur) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0.05rem;
  height: 2px;
  background: var(--amber);
  transition: right var(--dur) var(--ease);
}
.nav-link:hover { color: var(--paper); }
.nav-link:hover::after { right: 0; }
.nav-link[aria-current="page"] { color: var(--paper); }
.nav-link[aria-current="page"]::after { right: 0; }
.nav-link[aria-current="page"] .nav-link__num { color: var(--amber); }

/* 头部动作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
}

.header-cta { white-space: nowrap; }

.nav-toggle,
.drawer-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.48rem 0.65rem;
  background: rgba(17, 29, 47, 0.65);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover,
.drawer-toggle:hover {
  color: var(--amber);
  border-color: rgba(240, 166, 58, 0.55);
  background: rgba(240, 166, 58, 0.09);
}

.nav-toggle__bars,
.drawer-toggle__bars {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: background var(--dur) var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after,
.drawer-toggle__bars::before,
.drawer-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle__bars::before, .drawer-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after, .drawer-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] { color: var(--amber); border-color: rgba(240, 166, 58, 0.6); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: rgba(158, 172, 189, 0.14);
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--teal), var(--amber));
  transition: width 90ms linear;
}

/* ---------- 5. 快捷抽屉 ---------- */
.drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 105;
  background: rgba(4, 9, 17, 0.62);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.drawer-scrim[data-open="true"] { opacity: 1; visibility: visible; }

.quick-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: 110;
  width: min(370px, 92vw);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.5rem 1.35rem 2rem;
  overflow-y: auto;
  background:
    linear-gradient(180deg, #101B2C 0%, var(--ink) 58%, #0B1420 100%);
  border-left: 1px solid rgba(240, 166, 58, 0.38);
  box-shadow: -30px 0 70px rgba(0, 0, 0, 0.6);
  transform: translateX(103%);
  visibility: hidden;
  transition: transform 300ms var(--ease), visibility 300ms var(--ease);
}
.quick-drawer[data-open="true"] { transform: none; visibility: visible; }

.drawer-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.drawer-title {
  font-size: 1.25rem;
  margin: 0.15rem 0 0;
}
.drawer-close {
  flex: 0 0 auto;
  padding: 0.42rem 0.7rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.drawer-close:hover { color: var(--amber); border-color: var(--amber); }

.drawer-list { display: grid; gap: 0.65rem; }

.drawer-link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num label"
    "num meta";
  gap: 0.15rem 0.75rem;
  padding: 0.85rem 0.9rem;
  text-decoration: none;
  color: var(--paper);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: 2px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.drawer-link:hover {
  color: var(--paper);
  background: rgba(53, 224, 194, 0.09);
  border-left-color: var(--amber);
  transform: translateX(-3px);
}
.drawer-link__num {
  grid-area: num;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}
.drawer-link__label {
  grid-area: label;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
}
.drawer-link__meta {
  grid-area: meta;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--mist);
}

.drawer-foot {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.8rem;
}
.drawer-note {
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--mist);
  margin: 0;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 1.1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn--primary {
  background: var(--amber);
  color: #10203A;
  box-shadow: 0 10px 26px rgba(240, 166, 58, 0.22);
}
.btn--primary:hover { background: #FFBB5E; color: #10203A; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(240, 166, 58, 0.08);
}
.btn--teal {
  background: transparent;
  color: var(--teal);
  border-color: rgba(53, 224, 194, 0.55);
}
.btn--teal:hover { color: var(--ink); background: var(--teal); border-color: var(--teal); }
.btn--block { width: 100%; }

/* ---------- 7. 面包屑与页面容器 ---------- */
.page-shell { padding-top: var(--header-h); }
.page-shell--overlay { padding-top: 0; }

.breadcrumbs {
  margin: 0 0 clamp(1rem, 2.6vw, 1.9rem);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}
.breadcrumbs__list { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 0.55rem; }
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: rgba(158, 172, 189, 0.45);
}
.breadcrumbs a { color: var(--mist); text-decoration: none; }
.breadcrumbs a:hover { color: var(--amber); }
.breadcrumbs [aria-current="page"] { color: var(--paper); }

/* ---------- 8. 章节与文本 ---------- */
.section { padding-block: clamp(2.5rem, 6vw, 5rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  margin-bottom: clamp(1.25rem, 3vw, 2.25rem);
}

.kicker {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--teal);
}

.section-title { margin: 0; }

.lead {
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.85;
  color: rgba(242, 231, 208, 0.82);
  max-width: 62ch;
}

/* ---------- 9. 栅格 ---------- */
.layout-split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  gap: clamp(1.25rem, 3vw, 2.75rem);
  align-items: start;
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.stack-list { display: grid; gap: 1rem; }

@media (max-width: 900px) {
  .layout-split { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 10. 切角画板 ---------- */
.panel {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(
    0 0,
    calc(100% - var(--cut)) 0,
    100% var(--cut),
    100% 100%,
    var(--cut) 100%,
    0 calc(100% - var(--cut))
  );
}
.panel--paper {
  background: var(--paper);
  color: var(--brown);
  box-shadow: inset 0 0 0 1px rgba(42, 33, 25, 0.28);
}
.panel--paper h2,
.panel--paper h3,
.panel--paper h4 { color: var(--brown); }
.panel--paper a { color: var(--amber-ink); }
.panel--paper a:hover { color: #5C2F08; }
.panel--paper .panel__index { color: var(--amber-ink); }

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.85rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line-soft);
}
.panel--paper .panel__head { border-bottom-color: rgba(42, 33, 25, 0.18); }

.panel__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}
.panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.9vw, 1.32rem);
  letter-spacing: -0.01em;
}

/* 横向主题带 */
.band {
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
  border-block: 1px solid var(--line);
  padding-block: clamp(0.9rem, 2.2vw, 1.35rem);
}
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(102deg, rgba(240, 166, 58, 0.11) 0 2px, transparent 2px 26px);
  pointer-events: none;
}
.band > * { position: relative; }

/* ---------- 11. 标签与状态 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.24rem 0.62rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(17, 29, 47, 0.6);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}
.tag::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 8px rgba(53, 224, 194, 0.85);
}
.tag--amber::before { background: var(--amber); box-shadow: 0 0 8px rgba(240, 166, 58, 0.85); }
.tag--rust::before { background: var(--rust); box-shadow: none; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  background: rgba(17, 29, 47, 0.55);
}
.chip--amber { color: var(--amber); border-color: rgba(240, 166, 58, 0.45); background: rgba(240, 166, 58, 0.1); }
.chip--teal { color: var(--teal); border-color: rgba(53, 224, 194, 0.42); background: rgba(53, 224, 194, 0.09); }

.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--mist);
  vertical-align: middle;
}
.status-dot--live { background: var(--rust); box-shadow: 0 0 10px rgba(227, 91, 50, 0.8); }
.status-dot--ok { background: var(--success); box-shadow: 0 0 10px rgba(99, 214, 142, 0.7); }
.status-dot--warn { background: var(--amber); box-shadow: 0 0 10px rgba(240, 166, 58, 0.7); }

/* ---------- 12. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.06) brightness(0.94);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 21, 38, 0) 42%, rgba(10, 21, 38, 0.72) 100%),
    linear-gradient(90deg, rgba(240, 166, 58, 0.16), transparent 46%);
  pointer-events: none;
}
.media__caption {
  margin: 0.65rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 13. 侧栏目录 ---------- */
.index-list { display: grid; gap: 0.12rem; }
.index-list a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.48rem 0.6rem;
  color: var(--mist);
  font-size: 0.9rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.index-list a:hover { color: var(--paper); background: rgba(53, 224, 194, 0.06); }
.index-list a.is-active {
  color: var(--amber);
  border-left-color: var(--amber);
  background: rgba(240, 166, 58, 0.09);
}
.index-list__num {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: rgba(158, 172, 189, 0.75);
}

/* ---------- 14. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding: clamp(2.5rem, 6vw, 4rem) 0 1.4rem;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(20, 24, 31, 0) 0%, #14181F 14%, #0C121A 100%);
  border-top: 1px solid rgba(240, 166, 58, 0.3);
  overflow: hidden;
}
.footer-trail {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--amber) 0 16%,
    transparent 16% 21%,
    var(--teal) 21% 44%,
    transparent 44% 50%,
    var(--rust) 50% 58%,
    transparent 58% 100%);
  opacity: 0.9;
}
.footer-trail::after {
  content: "";
  position: absolute;
  top: 0; right: 6%;
  width: 34%;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(240, 166, 58, 0.65));
  transform: skewX(-24deg);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.8fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.footer-brand .brand { margin-bottom: 0.9rem; }
.brand--footer .brand-name { font-size: 1.12rem; }

.footer-lede {
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(242, 231, 208, 0.78);
  max-width: 34ch;
  margin-bottom: 1rem;
}

.footer-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.footer-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
}

.footer-list { display: grid; gap: 0.1rem; }
.footer-list a {
  display: inline-block;
  padding: 0.34rem 0;
  color: var(--mist);
  font-size: 0.92rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-list a:hover { color: var(--paper); border-bottom-color: var(--amber); }

.footer-contact { display: grid; gap: 0.7rem; }
.footer-contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed var(--line);
  font-size: 0.9rem;
}
.footer-label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}
.footer-value { color: rgba(242, 231, 208, 0.9); word-break: break-word; }

.copy-btn {
  margin-left: auto;
  padding: 0.14rem 0.5rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.copy-btn:hover { color: var(--amber); border-color: var(--amber); background: rgba(240, 166, 58, 0.08); }
.copy-btn[data-state="done"] {
  color: var(--success);
  border-color: rgba(99, 214, 142, 0.7);
  background: rgba(99, 214, 142, 0.1);
}

.footer-note {
  margin-top: 0.9rem;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--mist);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.footer-meta p { margin: 0; }
.footer-region { color: rgba(158, 172, 189, 0.85); }

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.85rem;
  background: rgba(20, 24, 31, 0.94);
  border: 1px solid rgba(240, 166, 58, 0.5);
  border-radius: 2px;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease), background var(--dur) var(--ease);
}
.back-to-top::before {
  content: "";
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 6px solid currentColor;
}
.back-to-top[data-visible="true"] { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { background: rgba(240, 166, 58, 0.14); }

/* ---------- 15. 显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .header-cta { display: none; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .nav {
    position: absolute;
    left: 0; right: 0; top: 100%;
    margin: 0;
    padding: 0 1.15rem;
    background: rgba(20, 24, 31, 0.985);
    border-top: 1px solid rgba(240, 166, 58, 0.3);
    border-bottom: 1px solid rgba(240, 166, 58, 0.3);
    box-shadow: 0 26px 46px rgba(4, 9, 17, 0.6);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 300ms var(--ease), opacity 200ms var(--ease), padding 300ms var(--ease), visibility 300ms var(--ease);
  }
  .nav[data-open="true"] {
    max-height: min(72vh, 520px);
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
    padding: 0.55rem 1.15rem 1.1rem;
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list li + li { border-top: 1px solid var(--line-soft); }
  .nav-link { padding: 0.85rem 0.15rem; font-size: 1rem; }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] { color: var(--amber); }
  .nav-link[aria-current="page"] .nav-link__num { color: var(--teal); }

  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .container { width: min(100% - 2rem, 1240px); }
  .header-inner { width: min(100% - 2rem, 1240px); gap: 0.5rem; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
}

@media (max-width: 560px) {
  .brand-sub { display: none; }
  .drawer-toggle__text { display: none; }
  .drawer-toggle { padding: 0.5rem 0.55rem; }
  .nav-toggle { padding: 0.5rem 0.55rem; }
  .footer-meta { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .back-to-top { right: 0.75rem; bottom: 0.75rem; }
  .panel { --cut: 10px; }
}

/* ---------- 17. 动效降级 ---------- */
@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;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .quick-drawer { transition: none; }
  .back-to-top { transform: none; }
  .scroll-progress__bar { transition: none; }
}