/* ===== 奇迹电游中心 · 共享层 site.css ===== */

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

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

:root {
  --ink: #061225;
  --ink-2: #0B1E3A;
  --ink-3: #040C1A;
  --blue: #1A5CFF;
  --cyan: #00E0C6;
  --gold: #FFB547;
  --violet: #5B3BFF;
  --ice: #EAF6FF;
  --mist: #9BB0CC;
  --line: #24406B;
  --link: #7FA8FF;
  --frost: #EEF3FA;
  --frost-ink: #0A1830;
  --gold-ink: #1A1305;
  --wrap: 1200px;
  --radius: 2px;
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, 0.45);
  --font-display: "MiSans", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.3, 0.7, 0.3, 1);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  font-weight: 400;
  color: var(--ice);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 84% -10%, rgba(26, 92, 255, 0.30), transparent 62%),
    radial-gradient(780px 520px at 2% 14%, rgba(0, 224, 198, 0.13), transparent 58%),
    radial-gradient(620px 480px at 60% 108%, rgba(91, 59, 255, 0.16), transparent 64%),
    linear-gradient(178deg, #061225 0%, #071A33 46%, #061225 100%);
  background-repeat: no-repeat;
  min-height: 100vh;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ice);
  margin: 0 0 0.55em;
}

h1 { font-size: clamp(38px, 6vw, 76px); line-height: 1.02; }
h2 { font-size: clamp(26px, 3.6vw, 44px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); font-weight: 800; }
h4 { font-size: 18px; font-weight: 800; letter-spacing: 0.01em; }

p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
img, svg { max-width: 100%; }
button { font: inherit; color: inherit; }

a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cyan); }

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.78em;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

/* ===== 通用容器 ===== */
.wrap {
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
}

.section { padding-block: clamp(44px, 6vw, 88px); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold);
  flex: none;
}

.lead {
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.85;
  color: var(--mist);
}

.prose { max-width: 72ch; }
.prose p { margin-bottom: 1.1em; }
.prose h3 { margin-top: 1.6em; }

/* ===== 跳转链接 ===== */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-decoration: none;
  border: 2px solid var(--ink);
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; color: var(--ink); }

/* ===== 头部 ===== */
.site-header {
  position: relative;
  z-index: 120;
  background: linear-gradient(180deg, rgba(6, 18, 37, 0.97), rgba(6, 18, 37, 0.88));
  border-bottom: 1px solid var(--line);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 140;
  pointer-events: none;
  background: linear-gradient(90deg, var(--blue) 0%, var(--cyan) 58%, var(--gold) 86%, var(--violet) 100%);
  transition: width 0.12s linear;
}

.header-top {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 36px);
  padding-block: 16px 14px;
  border-bottom: 1px dashed rgba(36, 64, 107, 0.8);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ice);
  flex: none;
}
.brand:hover { color: var(--ice); }

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border: 2px solid var(--cyan);
  background: linear-gradient(135deg, rgba(26, 92, 255, 0.65), rgba(0, 224, 198, 0.18));
  box-shadow: 3px 3px 0 rgba(0, 224, 198, 0.22);
}
.brand-mark-dot {
  display: block;
  width: 10px;
  height: 10px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(255, 181, 71, 0.25);
  transform: rotate(45deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--ice);
}
.brand-latin {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--cyan);
}

.header-tagline {
  flex: 1 1 200px;
  margin: 0;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  min-height: 44px;
  background: rgba(11, 30, 58, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ice);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}
.search-btn:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 224, 198, 0.08); }
.search-key {
  font-size: 11px;
  padding: 1px 6px;
  border: 1px solid var(--line);
  color: var(--gold);
  border-radius: var(--radius);
}

.header-mail {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.header-mail:hover { color: var(--link); border-color: var(--link); }
.header-mail-label {
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  position: relative;
  z-index: 130;
  min-height: 44px;
  padding: 8px 12px;
  background: rgba(26, 92, 255, 0.16);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ice);
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--cyan); }
.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 18px;
}
.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: var(--ice);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[data-open] .nav-toggle-bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[data-open] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle[data-open] .nav-toggle-bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
}

/* ===== 主导航（双层第二层） ===== */
.site-nav {
  background: linear-gradient(180deg, rgba(11, 30, 58, 0.92), rgba(11, 30, 58, 0.52));
  border-bottom: 1px solid var(--line);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 15px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: #FFFFFF;
  background: rgba(26, 92, 255, 0.22);
}
.nav-link[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(0, 224, 198, 0.10);
}
.nav-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.nav-link[aria-current="page"] .nav-num { color: var(--gold); }

.role-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 9px 12px;
  border-top: 1px dashed rgba(36, 64, 107, 0.85);
}
.role-strip-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mist);
  margin-right: 4px;
}
.role-chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 12px;
  font-size: 12.5px;
  color: var(--ice);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(6, 18, 37, 0.55);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.role-chip:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-1px);
}
.role-chip--gold {
  border-color: rgba(255, 181, 71, 0.6);
  color: var(--gold);
}
.role-chip--gold:hover { color: var(--gold-ink); background: var(--gold); border-color: var(--gold); }

/* ===== 站内搜索面板 ===== */
.search-panel {
  background: rgba(3, 10, 22, 0.98);
  border-bottom: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(0, 224, 198, 0.25);
}
.search-panel[hidden] { display: none; }

.search-panel-inner {
  display: grid;
  gap: 12px;
  padding-block: 20px 24px;
}
.search-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.search-input {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  background: rgba(11, 30, 58, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ice);
  font-family: var(--font-body);
  font-size: 16px;
}
.search-input::placeholder { color: rgba(155, 176, 204, 0.75); }
.search-input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-color: var(--cyan);
}
.search-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(212px, 1fr));
  gap: 8px;
  max-height: 280px;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 0;
}
.search-hit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--ice);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 30, 58, 0.55);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}
.search-hit:hover,
.search-hit:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 224, 198, 0.10);
}
.search-hit-kind {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mist);
  flex: none;
}
.search-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 12px 0;
  font-size: 13px;
  color: var(--mist);
}
.search-close {
  justify-self: start;
  min-height: 40px;
  padding: 7px 14px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.search-close:hover { color: var(--cyan); border-color: var(--cyan); }

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, rgba(4, 12, 26, 0.35), var(--ink-3) 58%);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--cyan) 42%, var(--gold) 74%, var(--violet) 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1.1fr 1.35fr;
  gap: clamp(20px, 3vw, 48px);
  padding-block: 52px 40px;
}

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

.footer-title {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.brand--footer { margin-bottom: 14px; }

.footer-text {
  max-width: 34ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}
.footer-text--tight {
  margin-top: 16px;
  max-width: 30ch;
  font-size: 12.5px;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 181, 71, 0.6);
  color: rgba(155, 176, 204, 0.95);
}

.footer-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}
.footer-live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 224, 198, 0.18);
}

.footer-icp {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.footer-list {
  display: grid;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 26px;
  font-size: 14.5px;
  color: var(--ice);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.footer-link::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  background: var(--line);
  transition: background 0.18s var(--ease), transform 0.18s var(--ease);
}
.footer-link:hover { color: var(--cyan); }
.footer-link:hover::before { background: var(--cyan); transform: translateX(2px); }

.footer-contact { display: grid; gap: 14px; }
.footer-contact-row { display: grid; gap: 3px; }
.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-value {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ice);
  word-break: break-word;
}
.footer-value.mono {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.copy-btn {
  justify-self: start;
  margin-top: 4px;
  min-height: 32px;
  padding: 4px 12px;
  background: rgba(255, 181, 71, 0.08);
  border: 1px solid rgba(255, 181, 71, 0.55);
  border-radius: var(--radius);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}
.copy-btn:hover { background: var(--gold); color: var(--gold-ink); }

.footer-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
  background: rgba(255, 181, 71, 0.06);
  border-left: 2px solid var(--gold);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 18px 28px;
  border-top: 1px solid var(--line);
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-legal-link {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  font-size: 12.5px;
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.footer-legal-link:hover { color: var(--link); }
.footer-base {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ice);
  text-decoration: none;
  background: transparent;
  border: 2px solid var(--ice);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn:hover {
  color: var(--ice);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(0, 0, 0, 0.55);
}
.btn--primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #FFFFFF;
}
.btn--primary:hover { background: #2E6BFF; border-color: #2E6BFF; color: #FFFFFF; }
.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--gold-ink);
}
.btn--gold:hover { background: #FFC46B; border-color: #FFC46B; color: var(--gold-ink); }
.btn--ghost { border-color: var(--line); color: var(--ice); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--quiet {
  min-height: 34px;
  padding: 4px 0;
  border-color: transparent;
  box-shadow: none;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.btn--quiet:hover {
  transform: none;
  box-shadow: none;
  color: var(--cyan);
}

/* ===== 面包屑 ===== */
.crumbs { padding-block: 20px 0; }
.crumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}
.crumbs-item { display: inline-flex; align-items: center; gap: 8px; }
.crumbs-item + .crumbs-item::before { content: "/"; color: var(--line); }
.crumbs-link { color: var(--mist); text-decoration: none; }
.crumbs-link:hover { color: var(--cyan); }
.crumbs-current { color: var(--ice); }

/* ===== 栅格与卡片 ===== */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background: rgba(11, 30, 58, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.38);
}
.card > :last-child { margin-bottom: 0; }

.card--frost {
  background: var(--frost);
  border-color: #C9D7E8;
  color: var(--frost-ink);
  box-shadow: 5px 5px 0 rgba(2, 8, 20, 0.55);
}
.card--frost h1,
.card--frost h2,
.card--frost h3,
.card--frost h4,
.card--frost p,
.card--frost li { color: var(--frost-ink); }
.card--frost a { color: #123A9E; }
.card--frost .lead { color: #31507A; }
.card--frost :focus-visible { outline-color: var(--blue); }

.card-kicker {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}
.card--frost .card-kicker { color: #31507A; }

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  background: rgba(6, 18, 37, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}
.tag--cyan { color: var(--cyan); border-color: rgba(0, 224, 198, 0.55); }
.tag--gold { color: var(--gold); border-color: rgba(255, 181, 71, 0.6); }
.tag--blue { color: var(--link); border-color: rgba(26, 92, 255, 0.7); }

/* ===== 响应式图片容器基础 ===== */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(135deg, rgba(26, 92, 255, 0.42) 0%, rgba(0, 224, 198, 0.16) 54%, rgba(255, 181, 71, 0.18) 100%);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.42);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(234, 246, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(234, 246, 255, 0.07) 1px, transparent 1px);
  background-size: 30px 30px;
}
.media img,
.media svg,
.media picture {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }

.media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ===== 滚动显现 ===== */
.reveal { opacity: 1; transform: none; }
html[data-js="on"] .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}
html[data-js="on"] .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ===== 平板 ===== */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; }
  .footer-col--brand .footer-text { max-width: 62ch; }
}

@media (max-width: 900px) {
  body { font-size: 16px; line-height: 1.78; }

  .header-top {
    flex-wrap: wrap;
    gap: 10px;
    padding-block: 12px;
  }
  .header-tagline,
  .header-mail { display: none; }
  .brand { flex: 1 1 auto; }
  .brand-name { font-size: 17px; }
  .header-tools { gap: 8px; }

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

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    overflow-y: auto;
    padding: 20px 0 48px;
    background:
      radial-gradient(680px 420px at 90% 0%, rgba(26, 92, 255, 0.30), transparent 62%),
      linear-gradient(180deg, #050F20 0%, #061225 100%);
    border-bottom: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s var(--ease);
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list { display: block; }
  .nav-list > li { border-bottom: 1px solid var(--line); }
  .nav-link {
    display: flex;
    width: 100%;
    align-items: baseline;
    padding: 16px 4px;
    font-size: 18px;
    border-bottom: none;
    border-left: 2px solid transparent;
    padding-left: 12px;
  }
  .nav-link[aria-current="page"] {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .role-strip {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px dashed rgba(36, 64, 107, 0.9);
  }
  .role-chip { min-height: 38px; padding: 7px 15px; font-size: 13.5px; }

  .search-panel-inner { padding-block: 16px 20px; }
  .search-results { grid-template-columns: 1fr; max-height: none; }

  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-block: 40px 32px;
  }
  .footer-col--brand { grid-column: 1 / -1; }
}

/* ===== 手机 ===== */
@media (max-width: 620px) {
  .wrap { width: min(100% - 28px, var(--wrap)); }

  .brand-mark { width: 32px; height: 32px; }
  .brand-latin { letter-spacing: 0.24em; font-size: 9px; }

  .search-btn { padding: 8px 10px; }
  .search-btn-label { display: none; }
  .search-key { border: none; padding: 0; font-size: 13px; }
  .nav-toggle-label { display: none; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-legal { gap: 6px 16px; }

  .media { box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.4); }
}

/* ===== 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;
    transition-delay: 0ms !important;
  }
  .scroll-progress { transition: none; }
  .reveal,
  html[data-js="on"] .reveal,
  html[data-js="on"] .reveal.is-visible {
    opacity: 1 !important;
    transform: none !important;
  }
  .site-nav {
    transform: none !important;
  }
  .btn:hover { transform: none; }
  .role-chip:hover { transform: none; }
}