/* ==========================================================================
   新普京玩家 · 共享 Site Kit  /assets/site.css
   蓝图网格 × 夜场霓虹 —— reset / 变量 / 排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

:root {
  color-scheme: dark;

  --abyss: #06050A;
  --graphite: #100D1A;
  --blueprint: #241C3A;
  --violet: #7A3BFF;
  --violet-deep: #4A2699;
  --cyan: #2FF3D8;
  --magenta: #FF3D9C;
  --amber: #FFC163;
  --fog: #EFECFA;
  --fog-dim: #A79FC4;

  --line: #241C3A;
  --line-soft: rgba(36, 28, 58, 0.72);
  --panel: rgba(16, 13, 26, 0.78);

  --font-head: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter Tight", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Noto Sans SC", monospace;

  --shell: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --reveal-delay: 0ms;
}

body {
  min-height: 100vh;
  background-color: var(--abyss);
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 蓝图网格 + 霓虹环境光：固定在视口，位于内容之下 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 28, 58, 0.62) 0 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 28, 58, 0.62) 0 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
  opacity: 0.5;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58vw 46vh at 10% -8%, rgba(122, 59, 255, 0.24), transparent 68%),
    radial-gradient(46vw 38vh at 94% 4%, rgba(255, 61, 156, 0.13), transparent 70%),
    radial-gradient(46vw 42vh at 68% 104%, rgba(47, 243, 216, 0.09), transparent 72%);
}

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

/* ---------- 排版骨架 ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--fog);
}

h1 { font-size: clamp(30px, 6vw, 72px); }
h2 { font-size: clamp(24px, 4vw, 44px); }
h3 { font-size: clamp(19px, 2.4vw, 26px); letter-spacing: -0.01em; }
h4 { font-size: 17px; letter-spacing: 0; }

p { max-width: 42em; }

strong { color: var(--fog); font-weight: 600; }

::selection { background: var(--violet); color: var(--fog); }

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 布局壳 ---------- */

.shell {
  position: relative;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- skip link ---------- */

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--abyss);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  transform: translateY(-180%);
  transition: transform 0.22s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 悬浮胶囊头部 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 16px 0;
  background: linear-gradient(180deg, rgba(6, 5, 10, 0.94) 0%, rgba(6, 5, 10, 0.68) 62%, rgba(6, 5, 10, 0) 100%);
  transition: padding 0.35s var(--ease), background-color 0.35s var(--ease);
}

.site-header[data-scrolled] {
  padding: 7px 0;
  background: linear-gradient(180deg, rgba(6, 5, 10, 0.98) 0%, rgba(6, 5, 10, 0.86) 100%);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  min-height: 54px;
}

/* 品牌坐标块 */
.brand {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 3px;
  padding-right: clamp(12px, 1.6vw, 22px);
  border-right: 1px solid var(--line);
}

.brand-line {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.brand-mark {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(16px, 1.7vw, 21px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog);
  text-shadow: 0 0 14px rgba(122, 59, 255, 0.6);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  line-height: 1;
  color: var(--fog-dim);
}

.brand-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--fog-dim);
}

/* 胶囊导航浮岛 */
.nav-capsule {
  display: flex;
  flex: 1 1 auto;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.nav-list li { position: relative; }

.nav-list li + li::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 50%;
  width: 1px;
  height: 14px;
  transform: translateY(-50%);
  background: var(--line);
}

.nav-link {
  position: relative;
  display: block;
  padding: 8px 15px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--fog-dim);
  white-space: nowrap;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.nav-link:hover {
  color: var(--fog);
  background: rgba(122, 59, 255, 0.16);
}

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

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 3px;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(47, 243, 216, 0.8);
}

/* 头部行动区 */
.header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

/* ---------- 按钮系统 ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 13px;
  line-height: 1.2;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease),
    border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn--primary {
  overflow: hidden;
  color: var(--abyss);
  background: var(--cyan);
  border: 1px solid var(--cyan);
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
}

.btn--primary::after {
  content: "";
  position: absolute;
  inset: -2px;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 34%, rgba(255, 255, 255, 0.62) 50%, transparent 66%);
  transform: translateX(-140%);
  transition: transform 0.55s var(--ease);
}

.btn--primary:hover {
  background: #5ef8e4;
  box-shadow: 0 0 0 1px rgba(47, 243, 216, 0.7), 0 0 24px rgba(47, 243, 216, 0.35);
}

.btn--primary:hover::after { transform: translateX(140%); }

.btn--quiet {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--fog-dim);
  border: 1px solid transparent;
}

.btn--quiet:hover {
  color: var(--cyan);
  border-color: var(--line);
  background: rgba(122, 59, 255, 0.12);
}

.btn--line {
  color: var(--fog);
  background: rgba(74, 38, 153, 0.18);
  border: 1px solid var(--violet);
}

.btn--line:hover {
  color: var(--fog);
  background: var(--violet-deep);
  box-shadow: 0 0 18px rgba(122, 59, 255, 0.35);
}

/* ---------- 移动导航按钮 ---------- */

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: rgba(16, 13, 26, 0.9);
  color: var(--fog);
}

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

.nav-toggle-bar {
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease);
}

.nav-toggle-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.nav-toggle[aria-expanded="true"] { color: var(--cyan); border-color: var(--violet); }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child { transform: translateY(2.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child { transform: translateY(-2.5px) rotate(-45deg); }

/* ---------- 阅读进度光轨 ---------- */

.header-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--violet), var(--cyan) 58%, var(--magenta));
  box-shadow: 0 0 12px rgba(47, 243, 216, 0.45);
  transition: transform 0.12s linear;
}

/* ---------- 通用内容组件 ---------- */

.coord {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.coord::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section-head {
  display: grid;
  gap: 12px;
  padding-top: clamp(48px, 7vw, 96px);
}

.section-title { max-width: 22ch; }

.section-note {
  max-width: 52ch;
  font-size: 14px;
  color: var(--fog-dim);
}

.hairline {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line), rgba(36, 28, 58, 0));
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 36px);
}

.card {
  position: relative;
  padding: clamp(18px, 2.2vw, 28px);
  background: var(--graphite);
  border: 1px solid var(--line);
}

.prose {
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--fog);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2,
.prose h3 { margin-top: 2em; }

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(47, 243, 216, 0.42);
}

.prose a:hover { border-bottom-color: var(--cyan); }

.prose ul,
.prose ol { padding-left: 1.2em; }

.prose li + li { margin-top: 0.45em; }

.breadcrumb { padding-top: 20px; }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog-dim);
}

.breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--violet);
}

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

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

/* 图片容器：页面阶段直接放入 img / video 即可 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(74, 38, 153, 0.5), rgba(6, 5, 10, 0.92) 68%);
  border: 1px solid var(--line);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 5, 10, 0) 42%, rgba(6, 5, 10, 0.58));
}

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

.media-frame--empty::before {
  content: attr(data-label);
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog-dim);
}

/* 横向吸附筛选条 */
.chip-row {
  display: flex;
  gap: 10px;
  padding-bottom: 6px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.chip {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fog-dim);
  background: rgba(16, 13, 26, 0.6);
  border: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

.chip[aria-pressed="true"] {
  color: var(--abyss);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* 索引式列表 */
.list-index {
  display: grid;
  border-top: 1px solid var(--line);
}

.list-index li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.list-index .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

/* ---------- 显现动效 ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.48s var(--ease), transform 0.48s var(--ease);
  transition-delay: var(--reveal-delay);
}

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

/* ---------- 页脚 ---------- */

.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(64px, 9vw, 140px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 13, 26, 0.35), rgba(6, 5, 10, 0.98) 46%);
}

.footer-ruler {
  height: 24px;
  background-image:
    repeating-linear-gradient(to right, var(--blueprint) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(to right, rgba(122, 59, 255, 0.6) 0 1px, transparent 1px 96px),
    linear-gradient(to bottom, transparent calc(100% - 1px), var(--line) calc(100% - 1px));
  background-repeat: repeat-x;
  background-size: auto 8px, auto 16px, auto 100%;
  background-position: left bottom, left bottom, left top;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 40px);
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(26px, 4vw, 46px);
}

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

.footer-col--brand { grid-column: span 4; }
.footer-col--nav { grid-column: span 2; }
.footer-col--legal { grid-column: span 3; }

.footer-col--feedback {
  grid-column: span 3;
  padding-left: clamp(16px, 2vw, 26px);
  border-left: 1px solid var(--cyan);
  box-shadow: inset 1px 0 0 rgba(47, 243, 216, 0.22);
}

.footer-mark {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--fog);
  text-shadow: 0 0 14px rgba(122, 59, 255, 0.55);
}

.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fog-dim);
}

.footer-text {
  max-width: 34ch;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog-dim);
}

.footer-list { display: grid; gap: 9px; margin-top: 4px; }

.footer-link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: var(--fog-dim);
  transition: color 0.2s var(--ease);
}

.footer-link:hover { color: var(--fog); }

.footer-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--violet);
  transition: color 0.2s var(--ease);
}

.footer-link:hover .footer-idx { color: var(--cyan); }

.footer-cta { margin-top: 16px; }

.footer-meta {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--fog-dim);
  overflow-wrap: anywhere;
}

.footer-strong { color: var(--fog); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  padding-bottom: 30px;
  border-top: 1px solid var(--line);
}

.footer-coord,
.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--fog-dim);
}

.footer-coord { color: var(--violet); }

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .btn--quiet { display: none; }

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

  .nav-capsule {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 12px);
    justify-content: flex-start;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s var(--ease);
  }

  .nav-capsule[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding: 10px;
    border-radius: 4px;
    background: rgba(9, 7, 16, 0.97);
  }

  .nav-list li + li::before { display: none; }

  .nav-link {
    padding: 12px 14px;
    border-radius: 2px;
    font-size: 15px;
    border-bottom: 1px solid rgba(36, 28, 58, 0.6);
  }

  .nav-list li:last-child .nav-link { border-bottom: 0; }

  .nav-link[aria-current="page"] {
    background: rgba(47, 243, 216, 0.08);
  }

  .nav-link[aria-current="page"]::after {
    left: 14px;
    right: auto;
    bottom: 8px;
    width: 26px;
  }
}

@media (max-width: 960px) {
  .footer-col--brand { grid-column: span 6; }
  .footer-col--feedback { grid-column: span 6; }
  .footer-col--nav { grid-column: span 6; }
  .footer-col--legal { grid-column: span 6; }
}

@media (max-width: 720px) {
  .brand-line { flex-direction: column; align-items: flex-start; gap: 2px; }

  .brand-sub { font-size: 9px; letter-spacing: 0.2em; }

  .brand-meta { font-size: 11px; }

  .btn--primary { padding: 9px 14px; font-size: 12px; }

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

@media (max-width: 600px) {
  .footer-col--brand,
  .footer-col--feedback,
  .footer-col--nav,
  .footer-col--legal { grid-column: span 12; }

  .footer-col--feedback { padding-left: 14px; }
}

@media (max-width: 400px) {
  :root { --gutter: 14px; }

  .brand-mark { font-size: 14px; }
  .brand-meta { display: none; }
  .btn--primary { padding: 8px 10px; font-size: 11px; }
  .nav-toggle { padding: 8px 10px; }
  .nav-toggle-label { display: none; }
}

/* ---------- 动效降级 ---------- */

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

  *,
  *::before,
  *::after { animation: none !important; }

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

  .header-progress { transition: none; }
  .site-header,
  .skip-link,
  .btn,
  .btn--primary::after,
  .nav-capsule,
  .nav-toggle-bar { transition: none; }
}