/* ==========================================================================
   易倍赛场 · 共享样式表  /assets/site.css
   骨架：顶部指挥条 + 左缘轮次导轨 + 纵向叙事长卷
   ========================================================================== */

/* --- 变量 ---------------------------------------------------------------- */
:root {
  --ink: #0A1C17;
  --deck: #12161A;
  --board: #1B2B26;
  --cyan: #2BF0C4;
  --orange: #FF7A1F;
  --flag: #E2444B;
  --paper: #EDF3F0;
  --mute: #93A6A0;
  --line: #33463F;
  --bar: 56px;
  --rail: 184px;
  --sp: 0;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

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

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

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

table { border-collapse: collapse; width: 100%; }

fieldset { border: 0; padding: 0; }

/* --- 基础排版 ------------------------------------------------------------ */
body {
  padding-top: var(--bar);
  padding-left: var(--rail);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 12% -8%, rgba(43, 240, 196, 0.07), transparent 62%),
    radial-gradient(760px 520px at 96% 4%, rgba(255, 122, 31, 0.06), transparent 60%);
  background-repeat: no-repeat;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-stretch: 92%;
  color: var(--paper);
}

h1 { font-size: clamp(36px, 6vw, 76px); }
h2 { font-size: clamp(26px, 3.4vw, 42px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }

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

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

a:hover { color: var(--paper); }

strong { color: var(--paper); font-weight: 700; }

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

[id] { scroll-margin-top: calc(var(--bar) + 24px); }

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

/* --- 跳转链接 ------------------------------------------------------------ */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 120;
  transform: translate(-50%, -130%);
  padding: 10px 22px;
  border-radius: 0 0 999px 999px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translate(-50%, 0);
  color: var(--ink);
}

/* --- 顶部指挥条 ---------------------------------------------------------- */
.site-frame { position: relative; z-index: 60; }

.frame-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--bar);
  padding: 0 20px;
  background: rgba(10, 28, 23, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.frame-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  margin-right: auto;
  min-width: 0;
}

.frame-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: linear-gradient(140deg, var(--cyan), #12A98A);
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0;
}

.frame-brand__text {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
  white-space: nowrap;
}

.frame-brand__sub {
  padding-left: 12px;
  margin-left: 2px;
  border-left: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--mute);
  white-space: nowrap;
}

.frame-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 14px 6px 12px;
  border: 1px solid rgba(43, 240, 196, 0.28);
  border-radius: 999px;
  background: rgba(27, 43, 38, 0.72);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  white-space: nowrap;
}

.frame-status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(43, 240, 196, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}

.frame-status__text { color: var(--cyan); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(43, 240, 196, 0.14); }
  50% { box-shadow: 0 0 0 7px rgba(43, 240, 196, 0.05); }
}

.frame-cta { flex: 0 0 auto; }

/* --- 移动导航按钮 -------------------------------------------------------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--board);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

.nav-toggle__bars {
  width: 16px;
  height: 10px;
  background-image:
    linear-gradient(currentColor, currentColor),
    linear-gradient(currentColor, currentColor),
    linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: 0 0, 0 4px, 0 8px;
}

.nav-toggle__label { line-height: 1; }

/* --- 左缘轮次导轨 -------------------------------------------------------- */
.frame-nav {
  position: fixed;
  top: var(--bar);
  left: 0;
  bottom: 0;
  z-index: 70;
  width: var(--rail);
  padding: 26px 16px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background:
    linear-gradient(180deg, rgba(27, 43, 38, 0.6), rgba(18, 22, 26, 0) 42%),
    var(--deck);
  border-right: 1px solid var(--line);
}

.frame-nav::before {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, rgba(51, 70, 63, 0.2), rgba(51, 70, 63, 0.05));
}

.frame-nav::after {
  content: "";
  position: absolute;
  top: 0;
  right: -1px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
  transform-origin: top center;
  transform: scaleY(var(--sp, 0));
  transition: transform 0.14s linear;
  pointer-events: none;
}

.frame-nav__note {
  margin: 0 0 14px;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mute);
}

.rail-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rail-item { display: block; }

.rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--mute);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.rail-link__no {
  flex: 0 0 22px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--line);
  transition: color 0.18s ease;
}

.rail-link__label { flex: 1 1 auto; min-width: 0; }

.rail-link:hover {
  color: var(--paper);
  background: var(--board);
  border-color: var(--line);
}

.rail-link:hover .rail-link__no { color: var(--cyan); }

.rail-link[aria-current="page"] {
  color: var(--paper);
  background: var(--board);
  border-color: var(--line);
}

.rail-link[aria-current="page"] .rail-link__no { color: var(--orange); }

.rail-link[aria-current="page"] .rail-link__label { color: var(--cyan); }

/* --- 页脚 ---------------------------------------------------------------- */
.site-foot {
  margin-top: clamp(48px, 7vw, 96px);
  padding-top: clamp(36px, 5vw, 62px);
  background: var(--deck);
  border-top: 1px solid var(--line);
}

.foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) repeat(3, minmax(0, 1fr));
  gap: 30px 26px;
  padding-bottom: clamp(30px, 4vw, 46px);
}

.foot-brand__name {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.foot-brand__line {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.foot-brand__summary {
  margin: 0;
  max-width: 42ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mute);
}

.foot-col__title {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
}

.foot-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot-links a {
  display: inline-block;
  color: var(--paper);
  font-size: 15px;
  opacity: 0.78;
  border-bottom: 1px solid transparent;
}

.foot-links a:hover {
  color: var(--cyan);
  opacity: 1;
  border-bottom-color: rgba(43, 240, 196, 0.5);
}

.foot-meta {
  display: grid;
  gap: 8px;
  padding: 22px 0 30px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mute);
}

.foot-contact { margin: 0; color: var(--paper); opacity: 0.86; }
.foot-legal { margin: 0; }

.foot-year {
  margin: 0;
  font-family: var(--mono);
  letter-spacing: 0.08em;
  color: var(--line);
}

/* --- 布局容器 ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(18px, 3.4vw, 44px);
}

.grid {
  display: grid;
  gap: 20px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

.divider {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line);
  opacity: 0.6;
}

/* --- 章节体系 ------------------------------------------------------------ */
.stage {
  position: relative;
  padding: clamp(48px, 6.5vw, 96px) 0;
}

.stage__no {
  display: block;
  margin: 0 0 0.14em;
  font-family: var(--mono);
  font-size: clamp(42px, 7vw, 88px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(43, 240, 196, 0.55);
  text-stroke: 1px rgba(43, 240, 196, 0.55);
}

.stage__title {
  margin: 0 0 0.5em;
  font-size: clamp(24px, 3.2vw, 40px);
}

.stage__lead {
  max-width: 62ch;
  margin: 0 0 1.4em;
  font-size: 17px;
  color: var(--mute);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  flex: 0 0 auto;
}

.band {
  width: 38%;
  height: 2px;
  margin-bottom: 20px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(43, 240, 196, 0));
  transition: width 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.is-in .band { width: 100%; }

/* --- 面板与数据切片 ------------------------------------------------------ */
.panel {
  background: var(--deck);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: clamp(20px, 3vw, 34px);
}

.slice {
  position: relative;
  background: var(--deck);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px 24px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.slice:hover {
  border-color: rgba(43, 240, 196, 0.75);
  background: var(--board);
}

.slice__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.slice__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.slice__meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

/* --- 正文容器 ------------------------------------------------------------ */
.prose { max-width: 68ch; }

.prose p {
  margin: 0 0 1.1em;
  color: var(--mute);
}

.prose p:last-child { margin-bottom: 0; }

.prose strong { color: var(--paper); }

/* --- 标签 ---------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(27, 43, 38, 0.66);
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.tag--cyan { color: var(--cyan); border-color: rgba(43, 240, 196, 0.42); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 31, 0.42); }
.tag--flag { color: var(--flag); border-color: rgba(226, 68, 75, 0.46); }

/* --- 数据数字 ------------------------------------------------------------ */
.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__num {
  font-family: var(--mono);
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.stat__num--outline {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--cyan);
  text-stroke: 1.5px var(--cyan);
}

.stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* --- 表格 ---------------------------------------------------------------- */
.data-table {
  width: 100%;
  font-size: 15.5px;
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid rgba(51, 70, 63, 0.6);
}

.data-table thead th {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom-color: var(--line);
}

.data-table tbody tr:nth-child(even) { background: rgba(27, 43, 38, 0.34); }

.data-table tbody tr {
  transition: background-color 0.18s ease;
}

.data-table tbody tr:hover { background: rgba(43, 240, 196, 0.07); }

.data-table__num {
  font-family: var(--mono);
  letter-spacing: 0.02em;
  color: var(--paper);
}

/* --- 按钮 ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.18s ease, color 0.18s ease,
    border-color 0.18s ease, box-shadow 0.18s ease;
}

.btn--primary {
  background: var(--orange);
  color: #10201B;
  box-shadow: inset 0 0 0 0 rgba(0, 0, 0, 0.18);
}

.btn--primary:hover {
  color: #10201B;
  box-shadow: inset 0 0 0 48px rgba(0, 0, 0, 0.16);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(43, 240, 196, 0.07);
}

.btn--cyan {
  background: var(--cyan);
  color: var(--ink);
}

.btn--cyan:hover { color: var(--ink); background: #6FF7D6; }

/* --- 面包屑 -------------------------------------------------------------- */
.crumbs {
  padding-top: 20px;
  font-size: 13px;
  color: var(--mute);
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0;
  padding: 0;
}

.crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.crumbs li + li::before {
  content: "/";
  color: var(--line);
}

.crumbs a { color: var(--mute); }
.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--paper); }

/* --- 图片槽位 ------------------------------------------------------------ */
.shot {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 22px;
  background-color: var(--board);
  background-image:
    linear-gradient(150deg, rgba(43, 240, 196, 0.12), rgba(10, 28, 23, 0) 52%),
    repeating-linear-gradient(90deg, rgba(51, 70, 63, 0.5) 0 1px, transparent 1px 46px);
}

.shot > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.shot__cap {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-shadow: 0 1px 12px rgba(10, 28, 23, 0.9);
}

.shot--wide { aspect-ratio: 21 / 9; }
.shot--tall { aspect-ratio: 4 / 5; }
.shot--square { aspect-ratio: 1 / 1; }

/* --- 视口显现 ------------------------------------------------------------ */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* --- 移动导航打开态 ------------------------------------------------------ */
body.nav-open { overflow: hidden; }

/* --- 平板 ---------------------------------------------------------------- */
@media (max-width: 1080px) {
  :root { --rail: 0px; }

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

  .frame-nav {
    width: min(84vw, 320px);
    transform: translateX(-102%);
    transition: transform 0.26s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 26px 64px rgba(0, 0, 0, 0.55);
  }

  .frame-nav[data-open] { transform: translateX(0); }

  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .foot-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .frame-status { display: none; }
  .frame-brand__sub { display: none; }
}

/* --- 手机 ---------------------------------------------------------------- */
@media (max-width: 640px) {
  body { font-size: 16px; }

  .frame-bar { gap: 10px; padding: 0 14px; }

  .frame-cta { display: none; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .foot-grid { grid-template-columns: minmax(0, 1fr); }

  .slice { padding: 18px 18px; }

  .data-table th,
  .data-table td { padding: 12px 10px; }

  .data-table { font-size: 14.5px; }
}

/* --- 减弱动效 ------------------------------------------------------------ */
@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .band { width: 100%; }

  .frame-nav::after { transition: none; }
}