/* ===== 九游赛场 · 共享样式 /assets/site.css ===== */

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

:root {
  --ink: #0B2B26;
  --ink-deep: #08201C;
  --night: #0E1A2B;
  --paper: #F3E9D2;
  --cream: #FFF8EA;
  --lime: #C7FF3D;
  --amber: #FFB24A;
  --magenta: #E5327A;
  --moss: #8FA89E;
  --steel: #5D6B75;

  --line: rgba(243, 233, 210, 0.16);
  --line-strong: rgba(243, 233, 210, 0.32);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 40px;
  --sp-5: 64px;

  --wrap: 1180px;
  --radius: 2px;
  --dur: 200ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(118deg, rgba(199, 255, 61, 0.035) 0 1px, transparent 1px 90px),
    radial-gradient(120% 80% at 88% -12%, rgba(255, 178, 74, 0.10), transparent 62%),
    radial-gradient(110% 80% at -10% 108%, rgba(14, 26, 43, 0.92), transparent 66%);
  background-attachment: fixed;
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  border-radius: 1px;
}

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

#main-content { scroll-margin-top: 140px; }
[id] { scroll-margin-top: 130px; }

/* ===== 跳转链接 ===== */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 800;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

/* ===== 头部外框 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 43, 38, 0.96);
  border-bottom: 1px solid rgba(243, 233, 210, 0.22);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.site-header::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0 34%, var(--amber) 34% 68%, var(--magenta) 68% 100%);
}
.hdr-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(243, 233, 210, 0.10);
  pointer-events: none;
}
.hdr-progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--lime), var(--amber));
}

.hdr-top {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 12px clamp(16px, 3vw, 40px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--cream);
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  background: var(--lime);
  color: var(--ink);
  font-size: 1.22rem;
  font-weight: 900;
  line-height: 1;
  border-radius: var(--radius);
  transform: rotate(-3deg);
  box-shadow: 0 0 0 1px rgba(199, 255, 61, 0.5), 4px 4px 0 rgba(255, 178, 74, 0.3);
  transition: transform var(--dur) var(--ease);
}
.brand:hover .brand-mark { transform: rotate(0deg); }
.brand-text { display: flex; flex-direction: column; gap: 2px; }
.brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  line-height: 1.25;
}
.brand-desc {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  line-height: 1.3;
  color: var(--moss);
}

.hdr-utility {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid rgba(243, 233, 210, 0.22);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.chip--round {
  color: var(--lime);
  border-color: rgba(199, 255, 61, 0.55);
  background: rgba(199, 255, 61, 0.08);
}
.chip--fresh {
  color: #FFC7DC;
  border-color: rgba(229, 50, 122, 0.6);
  background: rgba(229, 50, 122, 0.16);
}
.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--magenta);
  box-shadow: 0 0 0 3px rgba(229, 50, 122, 0.18);
}

.hdr-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: var(--sp-2);
}
.hdr-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  background: var(--lime);
  border: 1px solid var(--lime);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.hdr-cta:hover {
  background: transparent;
  color: var(--lime);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid rgba(199, 255, 61, 0.55);
  border-radius: var(--radius);
  color: var(--lime);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  transition: background var(--dur) var(--ease);
}
.nav-toggle:hover { background: rgba(199, 255, 61, 0.12); }
.nav-toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
  height: 14px;
}
.nav-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.site-header[data-open="true"] .nav-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open="true"] .nav-bar:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle-text { line-height: 1; }

/* ===== 栏目框架（导航条） ===== */
.hdr-nav {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  border-top: 1px solid rgba(243, 233, 210, 0.16);
  background: rgba(14, 26, 43, 0.55);
  padding-inline: clamp(0px, 2vw, 24px);
}
.nav-frame { display: flex; min-width: 0; }
.nav-list { display: flex; flex-wrap: wrap; align-items: stretch; }
.nav-item { display: flex; }
.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 18px;
  color: var(--paper);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  border-left: 1px solid rgba(243, 233, 210, 0.14);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-link:hover { background: rgba(199, 255, 61, 0.12); color: var(--lime); }
.nav-num {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}
.nav-link:hover .nav-num { color: var(--amber); }
.nav-text { letter-spacing: 0.06em; }
.nav-link[aria-current="page"] {
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
}
.nav-link[aria-current="page"] .nav-num { color: rgba(11, 43, 38, 0.62); }

.nav-scale {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-inline: 16px;
  border-left: 1px solid rgba(243, 233, 210, 0.14);
}
.nav-scale-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  color: var(--steel);
}
.nav-scale-ticks {
  width: 88px;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 8px);
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  margin-top: var(--sp-5);
  background: var(--night);
  color: var(--paper);
  border-top: 1px solid rgba(199, 255, 61, 0.35);
}
.foot-strip {
  height: 4px;
  background: linear-gradient(90deg, var(--lime) 0 30%, var(--amber) 30% 62%, var(--magenta) 62% 100%);
}
.foot-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 1.7fr);
  gap: clamp(24px, 4vw, 56px);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 64px) clamp(16px, 3vw, 40px) clamp(24px, 3vw, 36px);
}
.foot-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}
.brand-mark--ghost {
  width: 46px;
  height: 46px;
  background: transparent;
  color: var(--lime);
  border: 1px solid rgba(199, 255, 61, 0.6);
  box-shadow: none;
  transform: none;
}
.foot-brand-line {
  max-width: 24ch;
  font-size: 0.98rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--cream);
}
.foot-tag {
  padding: 4px 10px;
  border: 1px dashed rgba(255, 178, 74, 0.5);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}
.foot-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 36px);
}
.foot-col { min-width: 0; }
.foot-col-title {
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(243, 233, 210, 0.18);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--lime);
}
.foot-list { display: flex; flex-direction: column; gap: 9px; }
.foot-link {
  display: inline-block;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--paper);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.foot-link:hover { color: var(--lime); border-bottom-color: var(--lime); }

.foot-contact { display: flex; flex-direction: column; gap: 10px; }
.foot-contact-row { display: flex; flex-direction: column; gap: 2px; }
.foot-contact-key {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--steel);
}
.foot-contact-val {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--cream);
  word-break: break-word;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px clamp(16px, 3vw, 40px) 30px;
  border-top: 1px solid rgba(243, 233, 210, 0.16);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--moss);
}
.foot-legal-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-right: auto;
}
.foot-legal-item { color: var(--moss); }
.foot-legal-link {
  color: var(--paper);
  border-bottom: 1px solid rgba(243, 233, 210, 0.3);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.foot-legal-link:hover { color: var(--lime); border-bottom-color: var(--lime); }
.foot-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ===== 通用布局与文字 ===== */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: clamp(16px, 3vw, 40px);
}
.container--narrow { max-width: 760px; }
.section { padding-block: clamp(32px, 6vw, 72px); }
.section--tight { padding-block: clamp(20px, 3vw, 32px); }

.stack { display: flex; flex-direction: column; gap: var(--sp-3); }
.stack--tight { display: flex; flex-direction: column; gap: var(--sp-2); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--amber);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--amber);
}
.display-title {
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--cream);
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--cream);
}
.lead {
  max-width: 36ch;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.9;
  color: var(--paper);
}
.prose { color: rgba(243, 233, 210, 0.88); }
.prose p { max-width: 34em; line-height: 1.9; }
.prose p + p { margin-top: 1em; }
.prose h2, .prose h3 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  letter-spacing: 0.05em;
  color: var(--cream);
}
.prose a { color: var(--lime); border-bottom: 1px solid rgba(199, 255, 61, 0.5); }
.mono { font-family: var(--font-mono); letter-spacing: 0.06em; }
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--moss);
}

/* ===== 按钮与标签 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--lime);
  border-radius: var(--radius);
  background: var(--lime);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn:hover { background: transparent; color: var(--lime); transform: translateY(-2px); }
.btn--ghost {
  background: transparent;
  border-color: rgba(243, 233, 210, 0.4);
  color: var(--paper);
}
.btn--ghost:hover {
  background: var(--cream);
  border-color: var(--cream);
  color: var(--ink);
}
.btn--magenta {
  background: var(--magenta);
  border-color: var(--magenta);
  color: var(--cream);
}
.btn--magenta:hover {
  background: transparent;
  border-color: var(--magenta);
  color: #FFC7DC;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(243, 233, 210, 0.3);
  border-radius: var(--radius);
  background: rgba(243, 233, 210, 0.06);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}
.tag--lime { color: var(--lime); border-color: rgba(199, 255, 61, 0.55); background: rgba(199, 255, 61, 0.1); }
.tag--amber { color: var(--amber); border-color: rgba(255, 178, 74, 0.55); background: rgba(255, 178, 74, 0.1); }
.tag--magenta { color: #FFC7DC; border-color: rgba(229, 50, 122, 0.55); background: rgba(229, 50, 122, 0.14); }

/* ===== 卡片与网格 ===== */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid rgba(243, 233, 210, 0.16);
  border-radius: var(--radius);
  background: rgba(14, 26, 43, 0.72);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(199, 255, 61, 0.6);
  box-shadow: 0 18px 32px -20px rgba(0, 0, 0, 0.9);
}
.card-grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}
.grid-2 {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
}
.grid-3 {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--moss);
}
.breadcrumb a {
  color: var(--paper);
  border-bottom: 1px solid rgba(243, 233, 210, 0.3);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumb a:hover { color: var(--lime); border-bottom-color: var(--lime); }
.breadcrumb-sep { color: var(--steel); }

/* ===== 图片容器（页面阶段放入 img） ===== */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid rgba(243, 233, 210, 0.22);
  border-radius: var(--radius);
  background-color: var(--night);
  background-image:
    repeating-linear-gradient(115deg, rgba(199, 255, 61, 0.10) 0 2px, transparent 2px 12px),
    linear-gradient(135deg, rgba(11, 43, 38, 0.95), rgba(14, 26, 43, 0.95));
}
.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(243, 233, 210, 0.16);
  pointer-events: none;
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }
.figure { display: flex; flex-direction: column; gap: 10px; }
.figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--moss);
}

/* ===== 批注与分隔 ===== */
.note {
  padding: 14px 18px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 178, 74, 0.08);
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.8;
}
.divider {
  height: 1px;
  border: 0;
  margin-block: var(--sp-3);
  background-image: repeating-linear-gradient(90deg, rgba(243, 233, 210, 0.3) 0 10px, transparent 10px 20px);
}

/* ===== 响应式 ===== */
@media (max-width: 1080px) {
  .nav-link { padding: 12px 14px; font-size: 0.86rem; }
  .nav-scale-ticks { width: 56px; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .hdr-top { flex-wrap: wrap; row-gap: 8px; }
  .hdr-actions { order: 1; margin-left: auto; }
  .hdr-utility { order: 2; width: 100%; margin-left: 0; }

  .hdr-nav { display: none; }
  .site-header[data-open="true"] .hdr-nav {
    display: block;
    padding-inline: 0;
    background: rgba(14, 26, 43, 0.98);
    border-top: 1px solid rgba(199, 255, 61, 0.4);
    max-height: calc(100vh - 110px);
    overflow-y: auto;
  }
  .nav-frame { display: block; width: 100%; }
  .nav-list { flex-direction: column; }
  .nav-item { border-bottom: 1px solid rgba(243, 233, 210, 0.12); }
  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 15px clamp(16px, 4vw, 28px);
    border-left: 0;
    font-size: 1rem;
  }
  .nav-link[aria-current="page"] { background: rgba(199, 255, 61, 0.92); }
  .nav-scale { display: none; }

  .foot-inner { grid-template-columns: minmax(0, 1fr); }
  .foot-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-brand-line { max-width: none; }
}

@media (max-width: 700px) {
  .hdr-cta { display: none; }
  .brand-desc { display: none; }
  .brand-mark { width: 38px; height: 38px; font-size: 1.08rem; }
  .brand-name { font-size: 1rem; letter-spacing: 0.16em; }
  .chip { font-size: 0.64rem; padding: 4px 8px; }
  #main-content { scroll-margin-top: 120px; }
  [id] { scroll-margin-top: 110px; }
}

@media (max-width: 560px) {
  .foot-cols { grid-template-columns: minmax(0, 1fr); }
  .foot-legal { flex-direction: column; align-items: flex-start; gap: 10px; }
  .foot-legal-list { margin-right: 0; }
  .lead { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .card:hover,
  .btn:hover,
  .hdr-cta:hover,
  .brand:hover .brand-mark { transform: none; }
}