/* ==========================================================================
   天博赛场 · 共享站点样式 /assets/site.css
   夜间赛场指挥台：框架式轨道导航 + 切角面板 + 时间轴语汇
   ========================================================================== */

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

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

body {
  margin: 0;
  padding: var(--bar) var(--rail) 0;
  min-height: 100vh;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(25, 247, 193, 0.09), transparent 62%),
    radial-gradient(900px 520px at 4% 108%, rgba(255, 107, 53, 0.08), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(22, 62, 82, 0.34) 1px, transparent 1px),
    linear-gradient(rgba(22, 62, 82, 0.34) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 78%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 78%);
}

img, svg, video { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--ice); }

main { display: block; position: relative; z-index: 1; }

#main-content { scroll-margin-top: calc(var(--bar) + 18px); }

/* --------------------------------------------------------------------------
   变量
   -------------------------------------------------------------------------- */
:root {
  /* 色板 */
  --ink: #061826;
  --ink-2: #0B2740;
  --steel: #163E52;
  --signal: #19F7C1;
  --ice: #9DFFF0;
  --lava: #FF6B35;
  --paper: #F4FBFF;
  --haze: #8EA6B8;
  --warn: #FFD166;
  --final: #FF4D5E;

  /* 尺寸 */
  --bar: 68px;
  --rail: 76px;
  --cut: 14px;
  --dur: 180ms;
  --dur-slow: 220ms;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

@media (max-width: 1023px) {
  :root { --bar: 58px; }
}

/* --------------------------------------------------------------------------
   焦点与可访问性
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--warn);
  outline-offset: 3px;
}

.btn:focus-visible,
.to-top:focus-visible,
.chip:focus-visible,
.search-trigger:focus-visible,
.nav-toggle:focus-visible,
.site-nav__link:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--warn);
}

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

.skip-link {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 400;
  transform: translateY(-180%);
  padding: 11px 20px;
  background: var(--signal);
  color: #03151F;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: transform 160ms ease;
}

.skip-link:focus { transform: none; }

/* --------------------------------------------------------------------------
   顶部框架
   -------------------------------------------------------------------------- */
.site-header {
  position: relative;
  z-index: 300;
}

.site-header__bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 320;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
  height: var(--bar);
  padding: 0 clamp(14px, 2.2vw, 30px);
  background:
    linear-gradient(90deg, rgba(6, 24, 38, 0.97), rgba(11, 39, 64, 0.93) 52%, rgba(6, 24, 38, 0.97));
  border-bottom: 1px solid rgba(22, 62, 82, 0.95);
  box-shadow: 0 1px 0 rgba(25, 247, 193, 0.16), 0 22px 44px -34px #000;
  transition: box-shadow var(--dur) ease, background-color var(--dur) ease;
}

.site-header[data-stuck="true"] .site-header__bar {
  box-shadow: 0 1px 0 rgba(25, 247, 193, 0.4), 0 26px 48px -28px #000;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--paper);
  text-decoration: none;
  flex: none;
}

.brand__mark {
  width: 27px; height: 27px;
  flex: none;
  background: var(--signal);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
  transition: background-color var(--dur) ease;
}

.brand:hover .brand__mark { background: var(--ice); }

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.08em;
}

.brand__sub {
  margin-top: 4px;
  font-family: var(--font-data);
  font-size: 9px;
  letter-spacing: 0.34em;
  color: var(--haze);
}

.site-header__meta {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--haze);
}

.signal-dot {
  width: 7px; height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(25, 247, 193, 0.16);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 18px);
  margin-left: auto;
}

.header-mail {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--haze);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.header-mail:hover {
  color: var(--ice);
  border-bottom-color: var(--signal);
}

.header-cta { flex: none; }

/* 阅读进度 */
.scroll-meter {
  position: fixed;
  top: calc(var(--bar) - 2px);
  left: 0; right: 0;
  height: 2px;
  z-index: 321;
  background: rgba(22, 62, 82, 0.55);
  pointer-events: none;
}

.scroll-meter__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--signal), var(--ice) 68%, var(--lava));
  transition: transform 90ms linear;
}

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.05em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background-color var(--dur) ease, color var(--dur) ease, box-shadow var(--dur) ease;
}

.btn--signal { background: var(--signal); color: #03151F; }
.btn--signal:hover { background: var(--ice); }

.btn--lava { background: var(--lava); color: #1A0A03; }
.btn--lava:hover { background: #FF8B5F; color: #1A0A03; }

.btn--ghost {
  background: transparent;
  color: var(--ice);
  box-shadow: inset 0 0 0 1px rgba(25, 247, 193, 0.55);
}

.btn--ghost:hover {
  background: rgba(25, 247, 193, 0.12);
  box-shadow: inset 0 0 0 1px var(--signal);
}

/* --------------------------------------------------------------------------
   轨道导航
   -------------------------------------------------------------------------- */
.rail {
  position: fixed;
  top: var(--bar);
  bottom: 0;
  width: var(--rail);
  z-index: 310;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 18px 0 22px;
  background: linear-gradient(180deg, rgba(11, 39, 64, 0.78), rgba(6, 24, 38, 0.96));
}

.rail--nav {
  left: 0;
  border-right: 1px solid rgba(22, 62, 82, 0.95);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--steel) transparent;
}

.rail--tools {
  right: 0;
  border-left: 1px solid rgba(22, 62, 82, 0.95);
  justify-content: flex-start;
}

.rail__label {
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.34em;
  color: var(--steel);
  flex: none;
}

.rail__rule {
  width: 1px;
  height: 34px;
  flex: none;
  background: linear-gradient(180deg, transparent, var(--steel), transparent);
}

.rail__mail {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--haze);
  text-decoration: none;
  transition: color var(--dur) ease;
}

.rail__mail:hover { color: var(--ice); }

.site-nav { display: block; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.site-nav__item { margin: 0; }

.site-nav__link {
  display: block;
  padding: 12px 7px;
  border: 1px solid transparent;
  color: var(--haze);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.16em;
  text-decoration: none;
  writing-mode: vertical-rl;
  transition: color var(--dur) ease, border-color var(--dur) ease, background-color var(--dur) ease;
}

.site-nav__link:hover {
  color: var(--ice);
  border-color: rgba(25, 247, 193, 0.45);
}

.site-nav__link[aria-current="page"] {
  color: #03151F;
  background: var(--signal);
  border-color: var(--signal);
}

/* 检索触发 */
.search-trigger {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 11px 6px;
  background: transparent;
  border: 1px solid rgba(22, 62, 82, 0.95);
  color: var(--ice);
  cursor: pointer;
  transition: border-color var(--dur) ease, background-color var(--dur) ease, color var(--dur) ease;
}

.search-trigger:hover {
  border-color: var(--signal);
  background: rgba(25, 247, 193, 0.1);
}

.search-trigger__icon {
  position: relative;
  width: 12px; height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  flex: none;
}

.search-trigger__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -2px;
  width: 7px; height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
}

.search-trigger__text {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.24em;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  background: transparent;
  border: 1px solid rgba(25, 247, 193, 0.5);
  color: var(--ice);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color var(--dur) ease, border-color var(--dur) ease;
}

.nav-toggle:hover { background: rgba(25, 247, 193, 0.12); border-color: var(--signal); }

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) ease, opacity var(--dur) ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   检索抽屉
   -------------------------------------------------------------------------- */
.search-drawer {
  position: fixed;
  inset: 0;
  z-index: 340;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: calc(var(--bar) + 14px) clamp(14px, 4vw, 64px) 24px;
  overflow-y: auto;
  background: rgba(3, 13, 22, 0.74);
}

.search-drawer[hidden] { display: none; }

.search-drawer__panel {
  width: min(460px, 100%);
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(165deg, var(--ink-2), var(--ink));
  box-shadow: inset 0 0 0 1px rgba(25, 247, 193, 0.4);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.search-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(22, 62, 82, 0.95);
}

.search-drawer__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.04em;
}

.search-drawer__close {
  width: 32px; height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(22, 62, 82, 0.95);
  color: var(--ice);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: border-color var(--dur) ease, color var(--dur) ease;
}

.search-drawer__close:hover { border-color: var(--lava); color: var(--lava); }

.search-drawer__hint {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--haze);
}

.search-field { margin-top: 18px; }

.search-field__legend {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--signal);
  margin-bottom: 8px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 7px 12px;
  background: transparent;
  border: 1px solid rgba(22, 62, 82, 0.95);
  color: var(--ice);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: border-color var(--dur) ease, background-color var(--dur) ease, color var(--dur) ease;
}

.chip:hover { border-color: var(--signal); }

.chip[aria-pressed="true"] {
  background: var(--warn);
  border-color: var(--warn);
  color: #1A1408;
  font-weight: 700;
}

.search-drawer__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(22, 62, 82, 0.95);
}

/* --------------------------------------------------------------------------
   通用版式
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 36px);
}

.section { padding: clamp(28px, 4vw, 58px) 0; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: clamp(16px, 2vw, 26px);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: 0.01em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--signal);
}

.eyebrow::before {
  content: "";
  width: 18px; height: 2px;
  background: var(--signal);
  flex: none;
}

.data-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.vlabel {
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--haze);
}

.slash-rule {
  height: 6px;
  border: 0;
  margin: 0;
  background: repeating-linear-gradient(115deg, rgba(25, 247, 193, 0.65) 0 3px, transparent 3px 14px);
}

/* 面包屑 */
.breadcrumb { padding: 16px 0 0; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--haze);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumb__item::after {
  content: "/";
  color: var(--steel);
}

.breadcrumb__item:last-child::after { content: ""; }

.breadcrumb__link {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) ease;
}

.breadcrumb__link:hover { border-bottom-color: var(--signal); }

/* 网格 */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 1.6vw, 24px);
}

.g-4 { grid-column: span 4; }
.g-5 { grid-column: span 5; }
.g-6 { grid-column: span 6; }
.g-7 { grid-column: span 7; }
.g-8 { grid-column: span 8; }

@media (max-width: 1023px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .g-4, .g-5, .g-6 { grid-column: span 3; }
  .g-7, .g-8 { grid-column: span 6; }
}

@media (max-width: 639px) {
  .grid-12 { grid-template-columns: minmax(0, 1fr); }
  .g-4, .g-5, .g-6, .g-7, .g-8 { grid-column: span 1; }
}

/* 面板与卡片 */
.panel {
  position: relative;
  padding: clamp(18px, 2.2vw, 28px);
  background: linear-gradient(160deg, rgba(11, 39, 64, 0.96), rgba(6, 24, 38, 0.98));
  box-shadow: inset 0 0 0 1px rgba(22, 62, 82, 0.95);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: box-shadow var(--dur) ease;
}

.panel:hover { box-shadow: inset 0 0 0 1px rgba(25, 247, 193, 0.75); }

.panel--lava { box-shadow: inset 0 0 0 1px rgba(255, 107, 53, 0.55); }
.panel--lava:hover { box-shadow: inset 0 0 0 1px var(--lava); }

.card {
  position: relative;
  padding: clamp(16px, 2vw, 24px) clamp(16px, 2vw, 24px) clamp(16px, 2vw, 24px) clamp(20px, 2.4vw, 28px);
  background: linear-gradient(180deg, rgba(11, 39, 64, 0.92), rgba(6, 24, 38, 0.94));
  box-shadow: inset 0 0 0 1px rgba(22, 62, 82, 0.9);
  transition: box-shadow var(--dur) ease, transform var(--dur) ease;
}

.card::before {
  content: "";
  position: absolute;
  left: 0; top: 14px; bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal), rgba(25, 247, 193, 0.1));
}

.card:hover {
  box-shadow: inset 0 0 0 1px rgba(25, 247, 193, 0.7);
  transform: translateY(-2px);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ice);
  box-shadow: inset 0 0 0 1px rgba(25, 247, 193, 0.4);
}

.tag--lava { color: #FFD8C8; box-shadow: inset 0 0 0 1px rgba(255, 107, 53, 0.55); }
.tag--final { color: #FFC9CE; box-shadow: inset 0 0 0 1px rgba(255, 77, 94, 0.55); }

/* 时间轴 */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal), rgba(25, 247, 193, 0.05) 62%, var(--lava));
}

.timeline__item {
  position: relative;
  padding: 0 0 22px 6px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -24px; top: 8px;
  width: 9px; height: 9px;
  background: var(--signal);
  transform: rotate(45deg);
  box-shadow: 0 0 0 3px var(--ink);
  transition: transform var(--dur) ease;
}

.timeline__item:hover::before { transform: rotate(45deg) scale(1.35); }
.timeline__item[data-state="watch"]::before { background: var(--lava); }
.timeline__item[data-state="final"]::before { background: var(--final); }

.timeline__time {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--haze);
}

.timeline__label {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

/* 图片容器基础规则 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--steel);
  box-shadow: inset 0 0 0 1px rgba(22, 62, 82, 0.95);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(25, 247, 193, 0.16), transparent 46%),
    linear-gradient(0deg, rgba(6, 24, 38, 0.72), transparent 62%);
}

.media-frame__img,
.media-frame > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media-frame--board {
  background-image:
    linear-gradient(90deg, rgba(25, 247, 193, 0.16) 1px, transparent 1px),
    linear-gradient(rgba(25, 247, 193, 0.16) 1px, transparent 1px),
    linear-gradient(160deg, #0B2740, #061826);
  background-size: 40px 40px, 40px 40px, 100% 100%;
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 2;
  margin-top: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, rgba(11, 39, 64, 0.55), rgba(6, 24, 38, 1));
  border-top: 1px solid rgba(22, 62, 82, 0.95);
}

.footer-strip {
  height: 6px;
  background: repeating-linear-gradient(115deg, var(--signal) 0 18px, transparent 18px 44px, var(--lava) 44px 56px, transparent 56px 100px);
  opacity: 0.85;
}

.site-footer__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(30px, 4vw, 58px) clamp(16px, 3vw, 36px) clamp(24px, 3vw, 38px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, 0.8fr)) 1.3fr;
  gap: clamp(20px, 2.4vw, 40px);
  align-items: start;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: 0.08em;
}

.footer-brand__line {
  margin-top: 6px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.footer-brand__note {
  margin-top: 12px;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--haze);
}

.footer-brand .btn { margin-top: 18px; }

.footer-col__title {
  margin: 0 0 14px;
  padding-top: 10px;
  border-top: 1px solid rgba(22, 62, 82, 0.95);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--ice);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-list__link {
  display: inline-block;
  font-size: 14px;
  color: var(--haze);
  text-decoration: none;
  transition: color var(--dur) ease, box-shadow var(--dur) ease;
  box-shadow: inset 0 -1px 0 transparent;
}

.footer-list__link:hover {
  color: var(--ice);
  box-shadow: inset 0 -1px 0 var(--signal);
}

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

.footer-contact__label {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--haze);
  opacity: 0.75;
}

.footer-contact__value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ice);
  text-decoration: none;
}

a.footer-contact__value {
  font-family: var(--font-data);
  font-size: 13px;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) ease;
}

a.footer-contact__value:hover { border-bottom-color: var(--signal); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid rgba(22, 62, 82, 0.95);
}

.footer-legal {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--haze);
}

.footer-legal--muted { opacity: 0.78; }

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border: 0;
  background: var(--signal);
  color: #03151F;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background-color var(--dur) ease;
}

.to-top::before {
  content: "↑";
  font-family: var(--font-data);
  font-size: 13px;
}

.to-top:hover { background: var(--ice); }

/* --------------------------------------------------------------------------
   响应式：移动导航与轨道折叠
   -------------------------------------------------------------------------- */
@media (max-width: 1199px) {
  .site-header__meta { display: none; }
  .header-mail { display: none; }
  .footer-grid { grid-template-columns: 1.2fr repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-column: span 3; }
}

@media (max-width: 1023px) {
  body { padding: var(--bar) 0 0; }

  .rail--nav {
    position: static;
    width: auto;
    height: 0;
    padding: 0;
    border: 0;
    background: none;
    overflow: visible;
    display: block;
  }

  .rail--tools { display: none; }
  .rail__label { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: var(--bar);
    left: 0; right: 0;
    z-index: 330;
    max-height: calc(100vh - var(--bar));
    overflow-y: auto;
    padding: 14px clamp(14px, 4vw, 32px) 24px;
    background: linear-gradient(180deg, #0B2740, #061826 88%);
    border-bottom: 1px solid var(--signal);
    box-shadow: 0 34px 64px -32px #000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--dur) ease, transform var(--dur) ease, visibility var(--dur) linear;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    writing-mode: horizontal-tb;
    padding: 14px 10px;
    font-size: 15px;
    letter-spacing: 0.1em;
    border: 0;
    border-left: 2px solid transparent;
    border-bottom: 1px solid rgba(22, 62, 82, 0.7);
  }

  .site-nav__link:hover {
    border-left-color: var(--signal);
    background: rgba(25, 247, 193, 0.07);
  }

  .site-nav__link[aria-current="page"] {
    border-left-color: var(--signal);
    background: rgba(25, 247, 193, 0.16);
    color: var(--ice);
  }

  .search-drawer {
    padding: calc(var(--bar) + 12px) clamp(12px, 4vw, 32px) 20px;
    justify-content: center;
  }

  .search-drawer__panel { width: 100%; max-width: 520px; }
}

@media (max-width: 767px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-column: span 2; }
  .footer-brand { grid-column: span 2; }
  .brand__sub { letter-spacing: 0.26em; }
  .header-cta { padding: 10px 14px; font-size: 13px; }
}

@media (max-width: 479px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-contact,
  .footer-brand { grid-column: span 1; }
  .site-header__actions { gap: 8px; }
  .header-cta { display: none; }
  .footer-bottom { justify-content: flex-start; }
}

/* --------------------------------------------------------------------------
   减少动效
   -------------------------------------------------------------------------- */
@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;
  }

  .card:hover { transform: none; }
  .timeline__item:hover::before { transform: rotate(45deg); }
}