/* ============================================================
   德赢看台 / VWIN ARCHIVE — 共享 Site Kit
   /assets/site.css
   ============================================================ */

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

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

html.is-nav-open { overflow: hidden; }

body {
  margin: 0;
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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;
}

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

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

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩体系 */
  --ink: #061820;          /* 夜海底色 */
  --panel: #0B2733;        /* 深海面板 */
  --pitch: #1E5C45;        /* 夜场草绿 */
  --signal: #42D392;       /* 赛场荧光绿 */
  --amber: #E6B24A;        /* 琥珀金 */
  --flag: #E05A47;         /* 印刷朱红 */
  --paper: #E8E1D2;        /* 档案纸 */
  --mist: #9CB3BD;         /* 雾灰蓝 */
  --mist-dim: #6E8A97;     /* 弱化辅助文字 */
  --rule: #315062;         /* 线框蓝 */
  --void: #02090D;         /* 墨黑 */

  /* 尺寸 */
  --rail: 1440px;
  --gutter: clamp(18px, 4vw, 56px);
  --header-h: 82px;
  --header-h-compact: 62px;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: var(--font-display);
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Menlo,
    Consolas, "Liberation Mono", monospace;

  /* 动效 */
  --dur: 200ms;
  --dur-fast: 120ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 排版基础 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--paper);
}

p { max-width: 68ch; }

strong { font-weight: 700; }

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

.label-mono {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist-dim);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
}

.eyebrow::before {
  content: "";
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--amber);
}

.index-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background-color: rgba(11, 39, 51, 0.85);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.5;
}

.surface-panel {
  background-color: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: clamp(18px, 2.4vw, 28px);
}

/* ---------- 4. 焦点与可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.site-header :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--amber);
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  display: inline-block;
  padding: 11px 18px;
  border-radius: 2px;
  background-color: var(--signal);
  color: #04140f;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: top 180ms var(--ease);
}

.skip-link:focus {
  top: 12px;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease),
    color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    transform var(--dur-fast) var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--solid {
  background-color: var(--signal);
  border-color: var(--signal);
  color: #04140f;
}

.btn--solid:hover {
  background-color: #5CE8AC;
  border-color: #5CE8AC;
}

.btn--ghost {
  background-color: rgba(11, 39, 51, 0.7);
  border-color: var(--rule);
  color: var(--paper);
}

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

.btn--quiet {
  height: auto;
  padding: 2px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  background: none;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.btn--quiet:hover {
  border-bottom-color: var(--amber);
  color: var(--amber);
}

/* ---------- 6. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: rgba(6, 24, 32, 0.96);
  background-image: linear-gradient(
    180deg,
    rgba(6, 24, 32, 0.98) 0%,
    rgba(6, 24, 32, 0.9) 100%
  );
  border-bottom: 1px solid var(--rule);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-rail {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2.4vw, 44px);
  width: 100%;
  max-width: var(--rail);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 0 var(--gutter);
  transition: min-height 240ms var(--ease);
}

/* 品牌锁定块 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  min-width: 0;
}

.brand__mark {
  position: relative;
  display: block;
  width: 20px;
  height: 26px;
  border: 1px solid var(--rule);
  border-radius: 1px;
  background-color: rgba(2, 9, 13, 0.6);
  flex: none;
}

.brand__mark::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  height: 7px;
  background-color: var(--signal);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 4px;
  height: 3px;
  background-color: var(--amber);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.07em;
  color: var(--paper);
  white-space: nowrap;
}

.brand__suffix {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mist-dim);
  white-space: nowrap;
}

.brand:hover .brand__name { color: var(--paper); }
.brand:hover .brand__suffix { color: var(--signal); }

/* 桌面导航 */
.site-nav {
  justify-self: center;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.7vw, 30px);
  counter-reset: nav;
}

.site-nav__item {
  counter-increment: nav;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
  white-space: nowrap;
  transition: color 180ms var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background-color: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms var(--ease);
}

.site-nav__link:hover { color: var(--paper); }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--amber); }
.site-nav__link[aria-current="page"]::after {
  background-color: var(--amber);
  transform: scaleX(1);
}

/* 右端双入口 */
.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background-color: rgba(11, 39, 51, 0.7);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  transition: border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
  z-index: 90;
}

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

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
  flex: none;
}

.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  background-color: currentColor;
  transition: transform var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

.nav-toggle__label {
  white-space: nowrap;
  line-height: 1;
}

/* 滚动进度线 */
.scroll-meter {
  position: relative;
  height: 2px;
  background-color: rgba(49, 80, 98, 0.35);
  overflow: hidden;
}

.scroll-meter__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background-image: linear-gradient(90deg, var(--signal) 0%, var(--amber) 100%);
  will-change: transform;
}

/* 桌面紧凑态 */
@media (min-width: 981px) {
  .site-header[data-scrolled="true"] .header-rail {
    min-height: var(--header-h-compact);
  }
}

/* ---------- 7. 移动导航面板 ---------- */
@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .site-nav {
    position: fixed;
    top: var(--nav-offset, 84px);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    display: block;
    justify-self: stretch;
    padding: 20px var(--gutter) 56px;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-top: 1px solid var(--rule);
    background-color: var(--ink);
    background-image:
      radial-gradient(120% 62% at 100% 0%, rgba(30, 92, 69, 0.55) 0%, rgba(6, 24, 32, 0) 64%),
      linear-gradient(180deg, #0B2733 0%, #061820 100%);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 240ms var(--ease), transform 240ms var(--ease),
      visibility 240ms;
  }

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

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

  .site-nav__item {
    border-bottom: 1px solid var(--rule);
  }

  .site-nav__link {
    display: flex;
    align-items: baseline;
    gap: 16px;
    width: 100%;
    padding: 18px 0;
    font-size: 19px;
    letter-spacing: 0.04em;
    color: var(--paper);
  }

  .site-nav__link::before {
    content: counter(nav, decimal-leading-zero);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--mist-dim);
    flex: none;
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] { color: var(--amber); }
  .site-nav__link[aria-current="page"]::before { color: var(--amber); }

  .header-rail {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }

  .header-actions {
    display: none;
  }
}

/* 手机：操作入口折为第二行通栏条 */
@media (max-width: 720px) {
  .header-rail {
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 0;
    padding-top: 0;
    padding-bottom: 0;
  }

  .brand {
    padding: 13px 0;
  }

  .brand__name { font-size: 17px; }

  .brand__suffix {
    font-size: 8.5px;
    letter-spacing: 0.18em;
  }

  .header-actions {
    grid-column: 1 / -1;
    justify-self: stretch;
    display: flex;
    gap: 8px;
    padding: 8px 0 10px;
    margin-top: 2px;
    border-top: 1px solid var(--rule);
  }

  .header-actions .btn {
    flex: 1 1 0;
    height: 36px;
    padding: 0 8px;
    font-size: 12.5px;
    letter-spacing: 0.02em;
  }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  padding-top: clamp(44px, 6vw, 76px);
  background-color: var(--void);
  background-image: linear-gradient(
    180deg,
    rgba(11, 39, 51, 0.55) 0%,
    rgba(2, 9, 13, 0) 42%
  );
  border-top: 1px solid var(--rule);
  color: var(--mist);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: max(var(--gutter), calc((100% - var(--rail)) / 2 + var(--gutter)));
  width: min(38%, 260px);
  height: 1px;
  background-color: var(--amber);
}

.footer-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.1fr);
  gap: clamp(32px, 5vw, 76px);
  max-width: var(--rail);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.footer-brand__link {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 23px;
  letter-spacing: 0.07em;
  color: var(--paper);
}

.footer-brand__suffix {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--mist-dim);
}

.footer-brand__note {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-brand__meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
}

.footer-col__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer-link {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-size: 14.5px;
  color: var(--mist);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.footer-link:hover {
  color: var(--paper);
  border-bottom-color: var(--signal);
}

.footer-col__facts {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-fact {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.footer-fact dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist-dim);
}

.footer-fact dd {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.footer-fact dd .mono {
  font-size: 13px;
  letter-spacing: 0.03em;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  max-width: var(--rail);
  margin: clamp(36px, 5vw, 62px) auto 0;
  padding: 18px var(--gutter) 28px;
  border-top: 1px solid var(--rule);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist-dim);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.footer-legal__links .footer-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

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

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer-col--wide {
    grid-column: 1 / -1;
  }

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

/* ---------- 9. 正文容器与网格 ---------- */
.doc-shell {
  width: 100%;
  max-width: var(--rail);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 1.8vw, 28px);
}

@media (max-width: 820px) {
  .grid-12 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-dim);
}

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

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: var(--rule);
}

.breadcrumb__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

/* ---------- 10. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background-color: var(--panel);
  background-image:
    linear-gradient(135deg, rgba(30, 92, 69, 0.35) 0%, rgba(6, 24, 32, 0) 60%);
}

.media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(232, 225, 210, 0.07);
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
  background-image: linear-gradient(
    0deg,
    rgba(2, 9, 13, 0.92) 0%,
    rgba(2, 9, 13, 0) 100%
  );
}

/* ---------- 11. 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;
    scroll-behavior: auto !important;
  }
}