/* =========================================================
   银河游艺 · 共享样式表 /assets/site.css
   深空星域底色 + 暖纸星图内页 + 轨道节点语言
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --deep: #08050F;
  --nebula: #150C2B;
  --night: #241645;
  --paper: #F3E7D3;
  --paper-ink: #1B1526;
  --cyan: #3EE0CF;
  --gold: #F2C566;
  --magenta: #FF3F8E;
  --orbit: #9A93B8;
  --dust: #F7F5FF;

  --text-70: rgba(247, 245, 255, .70);
  --text-55: rgba(247, 245, 255, .55);
  --line: rgba(154, 147, 184, .26);
  --line-strong: rgba(154, 147, 184, .48);

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

  --wrap: 1180px;
  --gut: clamp(18px, 4vw, 40px);

  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 480ms;
}

/* ---------- 2. Reset ---------- */
*,
*::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, dl, dd { margin: 0; }

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

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

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

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

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

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

/* ---------- 3. 中文排版与页面底色 ---------- */
html { background-color: var(--deep); }

body {
  min-height: 100vh;
  background-color: var(--deep);
  color: var(--dust);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 星域光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1100px 620px at 72% -12%, rgba(62, 224, 207, .10), transparent 62%),
    radial-gradient(900px 520px at 6% 14%, rgba(255, 63, 142, .085), transparent 64%),
    radial-gradient(760px 760px at 46% 108%, rgba(242, 197, 102, .07), transparent 66%);
}

/* 精密网格底纹 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(rgba(154, 147, 184, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 147, 184, .055) 1px, transparent 1px);
  background-size: 64px 64px;
}

.site-header,
#main-content,
main,
.site-footer { position: relative; z-index: 1; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2.4rem, 5.4vw, 4.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }

p { text-wrap: pretty; }

#main-content { scroll-margin-top: 150px; }

/* ---------- 4. 容器 / 栅格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 26px);
}

.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.stack { display: flex; flex-direction: column; gap: clamp(14px, 2vw, 22px); }
.cluster { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; }

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  top: 8px;
  left: 50%;
  z-index: 90;
  transform: translate(-50%, -160%);
  padding: 10px 18px;
  background: var(--cyan);
  color: #05221f;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  border: 1px solid var(--cyan);
  transition: transform .18s var(--ease);
}

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

/* ---------- 6. 页头 / 刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background:
    linear-gradient(180deg,
      rgba(8, 5, 15, .97) 0%,
      rgba(8, 5, 15, .90) 62%,
      rgba(8, 5, 15, .78) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "left center right";
  align-items: center;
  gap: clamp(12px, 3vw, 32px);
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 16px var(--gut) 12px;
}

.masthead__center { grid-area: center; justify-self: center; }
.masthead__wing--left { grid-area: left; justify-self: start; }
.masthead__wing--right {
  grid-area: right;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 18px);
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.brand__name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .16em;
  text-indent: .16em;
  color: var(--dust);
  text-shadow: 0 0 26px rgba(242, 197, 102, .28);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--orbit);
}

/* C3EK 徽标 */
.chip-mark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  transition: color .18s var(--ease);
}

.chip-mark__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  padding: 5px 9px;
  border: 1px solid var(--gold);
  color: var(--gold);
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.chip-mark__text {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--orbit);
  transition: color .18s var(--ease);
}

.chip-mark:hover .chip-mark__code { background: var(--gold); color: var(--deep); }
.chip-mark:hover .chip-mark__text { color: var(--cyan); }

/* 工具条 */
.util-link {
  padding: 0;
  background: none;
  border: 0;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: .04em;
  color: rgba(247, 245, 255, .78);
  cursor: pointer;
  white-space: nowrap;
  transition: color .18s var(--ease);
}

.util-link:hover { color: var(--cyan); }
.util-link--button { position: relative; }

.zone-clock {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orbit);
  white-space: nowrap;
}

.zone-clock__label { letter-spacing: .14em; }
.zone-clock__time { color: var(--dust); font-size: 13px; letter-spacing: .06em; }

/* 移动导航开关 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: calc(100% - 2 * var(--gut));
  max-width: calc(var(--wrap) - 2 * var(--gut));
  margin: 0 auto 12px;
  padding: 12px 16px;
  background: var(--night);
  border: 1px solid var(--line-strong);
  color: var(--dust);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

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

.nav-toggle__icon { position: relative; display: block; width: 22px; height: 12px; }
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transition: transform .18s var(--ease);
}
.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 7. 轨道连线式主导航 ---------- */
.site-nav {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 0 var(--gut);
}

.site-nav__list {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px clamp(14px, 3vw, 38px);
}

/* 轨道线 */
.site-nav__list::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 10%, var(--line-strong) 90%, transparent);
}

.site-nav__list a {
  position: relative;
  display: block;
  padding: 9px 2px 15px;
  font-size: 15px;
  letter-spacing: .05em;
  color: var(--text-70);
  transition: color .18s var(--ease);
}

/* 轨道节点 */
.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 5px;
  height: 5px;
  background: var(--orbit);
  opacity: .55;
  transform: translateX(-50%) rotate(45deg);
  transition: background-color .18s var(--ease), opacity .18s var(--ease), transform .18s var(--ease);
}

.site-nav__list a:hover { color: var(--cyan); }
.site-nav__list a:hover::after {
  background: var(--cyan);
  opacity: 1;
  transform: translateX(-50%) rotate(45deg) scale(1.35);
}

/* 当前栏目：星芒金直角下划线 */
.site-nav__list a[aria-current="page"] { color: var(--dust); }

.site-nav__list a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
}

.site-nav__list a[aria-current="page"]::after {
  background: var(--gold);
  opacity: 1;
  box-shadow: 0 0 10px rgba(242, 197, 102, .85);
}

/* ---------- 8. 页脚收束 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 110px);
  padding: clamp(40px, 6vw, 72px) 0 34px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(21, 12, 43, .45) 0%, var(--nebula) 38%, #0B0618 100%);
  border-top: 1px solid var(--line);
}

.site-footer__aurora {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -30%;
  height: 70%;
  pointer-events: none;
  background: radial-gradient(58% 100% at 50% 100%, rgba(62, 224, 207, .10), transparent 72%);
}

.site-footer > .wrap { position: relative; z-index: 1; }

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) repeat(3, minmax(120px, .75fr));
  gap: clamp(26px, 4vw, 52px);
}

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.05rem);
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--dust);
  transition: color .18s var(--ease);
}

.footer-brand__name:hover { color: var(--gold); }

.footer-brand__sub {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--orbit);
}

.footer-brand__legal {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(154, 147, 184, .78);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--orbit);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 15px;
}

.footer-col__list a {
  color: rgba(247, 245, 255, .72);
  transition: color .18s var(--ease);
}

.footer-col__list a:hover { color: var(--cyan); }

.footer-orbit {
  position: relative;
  height: 1px;
  margin: clamp(28px, 4vw, 48px) 0;
  background: linear-gradient(90deg, transparent, var(--line-strong) 14%, var(--line-strong) 86%, transparent);
}

.footer-orbit::before,
.footer-orbit::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 6px;
  height: 6px;
  transform: translateY(-50%) rotate(45deg);
}

.footer-orbit::before { left: 8%; background: var(--cyan); }
.footer-orbit::after { right: 8%; background: var(--gold); }

.footer-contact {
  display: grid;
  gap: 8px;
  max-width: 82ch;
  font-size: 14.5px;
  color: rgba(247, 245, 255, .76);
}

.footer-contact__line { line-height: 1.8; }
.footer-contact__note { font-size: 13.5px; color: var(--orbit); }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 26px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(154, 147, 184, .16);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: rgba(154, 147, 184, .82);
}

/* ---------- 9. 通用按钮 / 标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--dust);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

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

.btn--primary {
  background: var(--magenta);
  border-color: var(--magenta);
  color: #12040B;
  font-weight: 700;
}

.btn--primary:hover {
  background: #FF5C9E;
  border-color: #FF5C9E;
  color: #12040B;
}

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

.mono-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  background: rgba(36, 22, 69, .55);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-70);
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

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

.tag[aria-pressed="true"],
.tag.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #05221F;
}

/* ---------- 10. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orbit);
}

.crumbs li { display: flex; align-items: center; gap: 8px; }
.crumbs li + li::before { content: "/"; color: rgba(154, 147, 184, .5); }
.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--dust); }

/* ---------- 11. 区块标题 / 轨道分隔 ---------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.section-head__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orbit);
}

.section-head__kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section-head__title { color: var(--dust); }

.orbit-rule {
  position: relative;
  height: 1px;
  margin: clamp(26px, 4vw, 46px) 0;
  background: var(--line);
}

.orbit-rule::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: translate(-50%, -50%) rotate(45deg);
}

/* ---------- 12. 面板 ---------- */
.panel {
  padding: clamp(22px, 3.4vw, 42px);
  border: 1px solid var(--line);
  background: var(--night);
}

.panel--night { background: var(--night); }
.panel--nebula { background: var(--nebula); }

.panel--paper {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(27, 21, 38, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 21, 38, .05) 1px, transparent 1px);
  background-size: 26px 26px;
  border-color: rgba(27, 21, 38, .18);
  color: var(--paper-ink);
}

.panel--paper h1,
.panel--paper h2,
.panel--paper h3,
.panel--paper h4 { color: var(--paper-ink); }

.panel--paper a {
  color: #0D6B64;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.panel--paper a:hover { color: #B02A63; }

.panel--paper .mono-tag { color: #0D6B64; }

.panel--paper .text-muted { color: rgba(27, 21, 38, .66); }

/* ---------- 13. 正文窄栏 ---------- */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
}

.prose > * + * { margin-top: 1.2em; }

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.prose a:hover { color: var(--gold); }

.prose ul,
.prose ol { padding-left: 1.3em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .4em; }

.prose table { font-size: 15px; }
.prose th,
.prose td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}
.prose th { font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em; color: var(--orbit); }

/* ---------- 14. 图片容器骨架 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 74% 22%, rgba(242, 197, 102, .16), transparent 46%),
    radial-gradient(circle at 18% 82%, rgba(62, 224, 207, .16), transparent 52%),
    var(--night);
  border: 1px solid var(--line-strong);
}

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

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

.media-frame__note {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orbit);
}

/* ---------- 15. 文本辅助 ---------- */
.text-muted { color: var(--text-55); }
.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: .08em; }

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

/* ---------- 16. 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: minmax(200px, 1.3fr) repeat(3, minmax(110px, .8fr)); }
}

@media (max-width: 900px) {
  .masthead {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "center center"
      "left right";
    row-gap: 12px;
    padding: 14px var(--gut) 14px;
  }

  .masthead__center { justify-self: center; }
  .masthead__wing--left { justify-self: start; }
  .masthead__wing--right { justify-self: end; }

  .nav-toggle { display: flex; }

  .site-nav { display: none; }
  .site-nav[data-open] { display: block; }

  .site-nav {
    padding: 0;
    background: var(--nebula);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .site-nav__list {
    display: block;
    padding: 4px var(--gut) 10px;
    max-width: var(--wrap);
    margin-inline: auto;
  }

  .site-nav__list::before { display: none; }

  .site-nav__list a {
    padding: 14px 2px 14px 16px;
    border-bottom: 1px solid rgba(154, 147, 184, .14);
    font-size: 15.5px;
  }

  .site-nav__list li:last-child a { border-bottom: 0; }

  .site-nav__list a::after { display: none; }

  .site-nav__list a[aria-current="page"]::before {
    top: 9px;
    bottom: 9px;
    left: 0;
    right: auto;
    width: 2px;
    height: auto;
  }

  .site-nav__list a[aria-current="page"] { padding-left: 16px; }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  [class*="col-"] { grid-column: span 6; }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .masthead {
    grid-template-columns: 1fr;
    grid-template-areas:
      "center"
      "left"
      "right";
    row-gap: 10px;
    justify-items: center;
  }

  .masthead__wing--left,
  .masthead__wing--right { justify-self: center; flex-wrap: wrap; justify-content: center; }

  .grid-12 { grid-template-columns: minmax(0, 1fr); }
  [class*="col-"] { grid-column: span 1; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-meta { flex-direction: column; }

  .prose { font-size: 16.5px; }
}

/* ---------- 18. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

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

  .skip-link { transition: none; }
}