/* ==========================================================================
   金年会登录 · 共享样式 /assets/site.css
   夜间赛场指挥中心：深墨绿主场 + 炭黑分区 + 青柠焦点 + 暖金索引
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
}

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

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

a { color: inherit; text-decoration: none; }

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

table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #071A13;
  --char: #0E1110;
  --pine: #143D2B;
  --mist: #F2F5EA;
  --steel: #8A958C;
  --lime: #C7FF3D;
  --gold: #E6B450;
  --crimson: #8C2F39;
  --grid: #3A4A42;
  --lime-soft: #E9FFB0;

  --rail-w: 272px;
  --bar-h: 64px;
  --gutter: clamp(18px, 4vw, 56px);
  --maxw: 1440px;
  --hair: 1px solid var(--grid);

  --font-display: "Noto Sans SC Condensed", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", SFMono-Regular, ui-monospace, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .7, .3, 1);
  --dur: 200ms;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(58, 74, 66, .18) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(58, 74, 66, .18) 1px, transparent 1px);
  background-size: 96px 96px;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: clamp(15px, .9vw + 12px, 17px);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. skip link ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink);
  border: 1px solid var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  transform: translateY(-180%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--mist);
  outline-offset: 2px;
}

/* ==========================================================================
   5. 头部 · 导航轨道
   ========================================================================== */

.site-rail {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--char);
  border-bottom: var(--hair);
  color: var(--mist);
}

.rail-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: var(--bar-h);
  padding: 8px var(--gutter) 8px 14px;
}

/* --- 品牌 --- */
.rail-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  min-width: 0;
}

.brand-glyph {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border: 1px solid var(--lime);
  background:
    linear-gradient(135deg, rgba(199, 255, 61, .18), rgba(199, 255, 61, 0) 62%),
    var(--pine);
  color: var(--lime);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1.15;
}

.brand-domain {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel);
  line-height: 1.2;
}

.rail-status {
  display: none;
  align-items: center;
  gap: 7px;
  padding: 5px 8px;
  border: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel);
  white-space: nowrap;
}

.status-dot {
  flex: none;
  width: 5px;
  height: 5px;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(199, 255, 61, .16);
}

/* --- 移动按钮 --- */
.nav-toggle {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--grid);
  color: var(--mist);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }

.nav-toggle-label {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
  border-top: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
}

.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  background: currentColor;
  transform: translateY(-50%);
}

.site-rail[data-open] .nav-toggle { border-color: var(--lime); color: var(--lime); }

/* --- 抽屉导航（移动端） --- */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: calc(var(--bar-h) + 24px) clamp(16px, 5vw, 28px) 56px;
  background: var(--ink);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 220ms var(--ease), visibility 220ms var(--ease);
}

.site-rail[data-open] .site-nav {
  transform: translateY(0);
  visibility: visible;
}

.nav-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-col--main { padding-top: 2px; }

.nav-col--service {
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--gold);
}

.nav-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--steel);
}

.nav-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--grid);
}

.nav-col--service .nav-heading { color: var(--gold); }
.nav-col--service .nav-heading::after { background: rgba(230, 180, 80, .38); }

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: baseline;
  gap: 6px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--mist);
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(199, 255, 61, .08);
  border-left-color: var(--lime);
  color: var(--lime);
}

.nav-link[aria-current="page"] {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(199, 255, 61, .18), rgba(199, 255, 61, 0) 92%);
  color: var(--lime);
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}

.nav-link:hover .nav-num,
.nav-link:focus-visible .nav-num { color: var(--gold); }

.nav-link[aria-current="page"] .nav-num { color: var(--gold); }

.nav-label {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  line-height: 1.45;
}

.nav-link--service {
  grid-template-columns: minmax(0, 1fr);
  gap: 3px;
  padding: 11px 12px;
  border-bottom: 1px solid rgba(58, 74, 66, .55);
}

.nav-label--service {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
}

.nav-note {
  font-family: var(--font-body);
  font-size: 11px;
  line-height: 1.55;
  letter-spacing: .02em;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}

.nav-link--service:hover .nav-note,
.nav-link--service:focus-visible .nav-note { color: rgba(242, 245, 234, .78); }

/* --- 轨道底部（桌面） --- */
.rail-foot {
  display: none;
  flex-direction: column;
  gap: 3px;
  margin-top: auto;
  padding: 16px 18px 20px;
  border-top: var(--hair);
}

.rail-foot-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--steel);
}

.rail-foot-value {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* --- 滚动进度 --- */
.rail-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  height: 2px;
  background: rgba(199, 255, 61, .14);
  pointer-events: none;
}

.rail-progress-bar {
  display: block;
  height: 100%;
  width: calc(var(--progress, 0) * 1%);
  background: var(--lime);
  transition: width 120ms linear;
}

/* ==========================================================================
   6. 页脚
   ========================================================================== */

.site-footer {
  background: var(--char);
  border-top: 1px solid var(--grid);
  color: var(--mist);
}

.footer-inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) 0;
}

.footer-top {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: var(--hair);
}

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

.footer-wordmark {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: .07em;
  line-height: 1.1;
}

.footer-tagline {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--steel);
}

.footer-domain {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-cols {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
}

.footer-col { min-width: 0; }

.footer-heading {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  display: inline-block;
  font-size: 13.5px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: rgba(242, 245, 234, .86);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.footer-list--contact { gap: 14px; }

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel);
}

.footer-contact-value {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 18px 0 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--steel);
}

.footer-copy,
.footer-icp { margin: 0; }

.footer-icp { color: var(--steel); }

/* ==========================================================================
   7. 通用布局组件
   ========================================================================== */

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

.section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

.section--tight { padding-block: clamp(30px, 4vw, 56px); }

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--lime);
}

.section-kicker::after {
  content: "";
  flex: none;
  width: clamp(40px, 10vw, 120px);
  height: 1px;
  background: var(--grid);
}

.section-num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.02em;
  color: rgba(230, 180, 80, .42);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: .02em;
}

.section-desc {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(242, 245, 234, .78);
}

.label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--steel);
}

.prose {
  max-width: 68ch;
  line-height: 1.8;
  color: rgba(242, 245, 234, .82);
}

.prose p + p { margin-top: 1em; }

.data-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--lime);
}

.grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 32px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.grid--split,
.grid--asym { grid-template-columns: 1fr; }

@media (min-width: 900px) {
  .grid--split { grid-template-columns: 5fr 7fr; }
  .grid--asym { grid-template-columns: 4fr 8fr; }
}

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--pine);
  border: 1px solid var(--grid);
  transition:
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

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

.card--offset { margin-top: 24px; }
.card--flat { background: var(--char); }

.rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--grid);
}

.rule--gold { background: linear-gradient(90deg, var(--gold), rgba(230, 180, 80, 0)); }

.slant-divider {
  height: clamp(24px, 4vw, 48px);
  background: var(--char);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

/* 按钮 */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--grid);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.2;
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  border-color: var(--lime);
  color: var(--lime);
}

.btn--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.btn--lime:hover,
.btn--lime:focus-visible {
  background: var(--lime-soft);
  border-color: var(--lime-soft);
  color: var(--ink);
}

.btn--gold { border-color: var(--gold); color: var(--gold); }

.btn--gold:hover,
.btn--gold:focus-visible {
  background: rgba(230, 180, 80, .12);
  border-color: var(--gold);
  color: var(--gold);
}

.btn--ghost:hover,
.btn--ghost:focus-visible { background: rgba(199, 255, 61, .08); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--grid);
  background: rgba(58, 74, 66, .16);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--steel);
}

.tag--lime {
  border-color: rgba(199, 255, 61, .5);
  background: rgba(199, 255, 61, .1);
  color: var(--lime);
}

.tag--gold {
  border-color: rgba(230, 180, 80, .5);
  background: rgba(230, 180, 80, .1);
  color: var(--gold);
}

.tag--risk {
  border-color: rgba(140, 47, 57, .72);
  background: rgba(140, 47, 57, .22);
  color: #E3A6AC;
}

/* 旁注 */
.note {
  display: block;
  padding: 10px 14px;
  border-left: 2px solid var(--gold);
  background: rgba(230, 180, 80, .06);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 245, 234, .82);
}

.note--risk {
  border-left-color: var(--crimson);
  background: rgba(140, 47, 57, .16);
  color: #F2DDE0;
}

/* 面包屑 */
.breadcrumb {
  padding-block: 14px;
  border-bottom: var(--hair);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--steel);
}

.breadcrumb-link {
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}

.breadcrumb-link:hover,
.breadcrumb-link:focus-visible { color: var(--lime); }

.breadcrumb-sep { color: var(--grid); }

.breadcrumb-current { color: var(--mist); }

/* 图片容器基础规则 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid);
  background: var(--pine);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.82) brightness(.8) contrast(1.05);
  transition: filter var(--dur) var(--ease);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 26, 19, 0) 34%, rgba(7, 26, 19, .88) 100%),
    linear-gradient(118deg, rgba(199, 255, 61, .16), rgba(199, 255, 61, 0) 56%);
}

a.media-frame:hover img,
a.media-frame:focus-visible img { filter: saturate(1) brightness(.92) contrast(1.05); }

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ==========================================================================
   8. 桌面轨道（≥1024px）
   ========================================================================== */

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .site-rail {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: var(--hair);
    background: var(--char);
  }

  .rail-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: 100%;
    min-height: 0;
    padding: 20px 0 0;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .rail-brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 0 18px 20px;
    border-bottom: var(--hair);
  }

  .rail-status { display: inline-flex; }

  .brand-name { font-size: 17px; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    display: flex;
    transform: none;
    visibility: visible;
    overflow: visible;
    padding: 20px 10px 24px;
    background: transparent;
    border-top: 0;
    gap: 22px;
  }

  .site-rail[data-open] .site-nav {
    transform: none;
    visibility: visible;
  }

  .nav-heading { padding-left: 8px; }

  .rail-foot { display: flex; }

  .rail-progress {
    left: auto;
    right: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    background: rgba(199, 255, 61, .14);
  }

  .rail-progress-bar {
    width: 100%;
    height: calc(var(--progress, 0) * 1%);
    transition: height 120ms linear;
  }

  html { scroll-padding-top: 24px; }
}

/* ==========================================================================
   9. 页脚响应式
   ========================================================================== */

@media (min-width: 900px) {
  .footer-top {
    grid-template-columns: minmax(240px, 1fr) minmax(0, 2.1fr);
    align-items: start;
  }
}

/* ==========================================================================
   10. 动效降级
   ========================================================================== */

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

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .btn:hover,
  .btn:focus-visible { transform: none; }

  .rail-progress-bar { transition: none; }
}