/* ============================================================
   澳门银诃 · 数字港  共享样式表  /assets/site.css
   夜港底 / 暗金刻度 / 珠光青入口 / 档案纸停顿
   ============================================================ */

/* ---------- 1. 重置 ---------- */
*,
*::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; list-style: none; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

a { color: var(--sky); text-decoration: none; }
a:hover { color: var(--pearl); }

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

/* ---------- 2. 设计令牌 ---------- */
:root {
  --ink: #0B1B2B;
  --harbor: #14304A;
  --teal-deep: #0E3A3A;
  --indigo: #2A1E4A;
  --gold: #F2C75C;
  --gold-deep: #C9A24A;
  --pearl: #4FD1C5;
  --sky: #38BDF8;
  --rose: #E4577A;
  --paper: #F4EFE6;
  --text: #E8EEF5;
  --muted: rgba(232, 238, 245, 0.66);
  --line: rgba(201, 162, 74, 0.32);
  --line-soft: rgba(232, 238, 245, 0.12);
  --glass: rgba(20, 48, 74, 0.42);
  --glass-deep: rgba(11, 27, 43, 0.82);
  --paper-ink: #1B2530;

  --font-num: "Oswald", "Archivo Narrow", "Arial Narrow", "Helvetica Neue", sans-serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wrap: 1280px;
  --gutter: 72px;
  --header-h: 64px;
  --radius: 6px;
  --radius-lg: 12px;
  --dur: 0.24s;
  --shadow-glass: 0 18px 40px -26px rgba(0, 0, 0, 0.75);
  --shadow-card: 0 12px 28px -20px rgba(0, 0, 0, 0.8);
}

@media (max-width: 900px) {
  :root { --gutter: 20px; --header-h: 60px; }
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 16.5px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 84% -8%, rgba(79, 209, 197, 0.09), transparent 62%),
    radial-gradient(900px 620px at 4% 6%, rgba(42, 30, 74, 0.62), transparent 60%),
    linear-gradient(180deg, #0B1B2B 0%, #09141F 78%, #0A1A2A 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

@media (max-width: 900px) {
  body { background-attachment: scroll; }
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

h1 { font-size: clamp(32px, 4.4vw, 56px); }
h2 { font-size: clamp(24px, 3vw, 40px); }
h3 { font-size: clamp(18px, 2vw, 24px); }
h4 { font-size: 17px; letter-spacing: 0; }

p { max-width: 72ch; }

strong { font-weight: 700; color: #FFFFFF; }

::selection { background: var(--gold); color: #1A1204; }

.mono,
code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: 0.04em;
}

/* ---------- 4. 骨架与容器 ---------- */
.main-content {
  display: block;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding: 72px 0; }
.section--tight { padding: 44px 0; }

.stack > * + * { margin-top: 16px; }

.divider-rule {
  height: 1px;
  border: 0;
  margin: 32px 0;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 14px);
}

/* ---------- 5. 输入焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--pearl);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 6. 顶部命令栏 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #04201F;
  background: var(--pearl);
  border-radius: var(--radius);
  transform: translateY(-160%);
  transition: transform var(--dur) ease;
}

.skip-link:focus {
  transform: translateY(0);
  color: #04201F;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(9, 20, 31, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(201, 162, 74, 0.5) 0 1px, transparent 1px 16px);
}

.header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  width: 100%;
  max-width: var(--wrap);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 9px var(--gutter);
  transition: padding var(--dur) ease;
}

.header-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold) 45%, var(--pearl) 100%);
  pointer-events: none;
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  gap: 1px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #FFFFFF;
  line-height: 1.2;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  color: var(--gold-deep);
  line-height: 1.4;
  transition: opacity var(--dur) ease;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item { position: relative; }

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  border-radius: 4px;
  transition: background var(--dur) ease, color var(--dur) ease, box-shadow var(--dur) ease;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
  transition: color var(--dur) ease;
}

.nav-link:hover {
  background: rgba(42, 30, 74, 0.62);
  color: #FFFFFF;
}

.nav-link:hover .nav-index { color: var(--pearl); }

.nav-link[aria-current="page"] {
  color: #FFFFFF;
  background: rgba(201, 162, 74, 0.18);
  box-shadow: inset 0 -2px 0 0 var(--pearl);
}

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

.nav-hint {
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  z-index: 20;
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text);
  white-space: nowrap;
  background: #0E2338;
  border: 1px solid rgba(201, 162, 74, 0.42);
  border-radius: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -4px);
  transition: opacity var(--dur) ease, transform var(--dur) ease, visibility var(--dur) ease;
  pointer-events: none;
}

.nav-link:hover .nav-hint,
.nav-link:focus-visible .nav-hint {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* 右端工具区 */
.header-utility {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: end;
}

.util-link {
  padding: 5px 11px;
  font-size: 12.5px;
  color: var(--pearl);
  border: 1px solid rgba(79, 209, 197, 0.36);
  border-radius: 999px;
  transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}

.util-link:hover {
  color: #FFFFFF;
  background: rgba(79, 209, 197, 0.16);
  border-color: var(--pearl);
}

.version-chip {
  padding: 4px 10px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid rgba(201, 162, 74, 0.5);
  border-radius: 4px;
  transition: background var(--dur) ease, color var(--dur) ease;
}

.version-chip:hover {
  color: #1A1204;
  background: var(--gold);
}

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  justify-self: end;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  position: relative;
  z-index: 90;
}

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

.nav-toggle-icon {
  position: relative;
  display: inline-block;
  width: 14px;
  height: 10px;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) ease;
}

.nav-toggle-icon::before { top: 0; }
.nav-toggle-icon::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: translateY(-4px) rotate(-45deg); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  color: var(--text);
  background-image: linear-gradient(180deg, rgba(42, 30, 74, 0.9) 0%, rgba(20, 48, 74, 0.62) 28%, rgba(9, 20, 31, 0.98) 100%);
  border-top: 1px solid var(--line);
}

.footer-shoulder {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px var(--gutter) 0;
}

.footer-shoulder-line {
  flex: 1;
  height: 1px;
  background-image: repeating-linear-gradient(90deg, rgba(201, 162, 74, 0.55) 0 2px, transparent 2px 12px);
}

.footer-shoulder-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  white-space: nowrap;
}

.footer-wrap {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: 36px 40px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 36px var(--gutter) 30px;
}

.footer-brand-name {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #FFFFFF;
  line-height: 1.25;
}

.footer-brand-sub {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.footer-brand-meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.footer-brand .btn { margin-top: 18px; }

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--gold-deep);
}

.footer-list li + li { margin-top: 9px; }

.footer-list a {
  font-size: 14.5px;
  color: rgba(232, 238, 245, 0.84);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.footer-list a:hover {
  color: var(--pearl);
  border-bottom-color: rgba(79, 209, 197, 0.5);
}

.footer-contact li {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(232, 238, 245, 0.8);
}

.footer-contact li + li { margin-top: 9px; }

.footer-contact a {
  color: rgba(232, 238, 245, 0.9);
  border-bottom: 1px solid rgba(232, 238, 245, 0.24);
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.footer-contact a:hover {
  color: var(--pearl);
  border-bottom-color: var(--pearl);
}

.footer-contact .mono {
  font-size: 12.5px;
  color: var(--gold-deep);
  letter-spacing: 0.04em;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter);
  border-top: 1px solid rgba(232, 238, 245, 0.1);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(232, 238, 245, 0.56);
}

.footer-legal-line { max-width: none; }

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-legal-links a { color: rgba(232, 238, 245, 0.74); }
.footer-legal-links a:hover { color: var(--pearl); }

.footer-note {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter) 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(232, 238, 245, 0.42);
}

/* ---------- 8. 通用区块抬头 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.lede {
  max-width: 62ch;
  font-size: 18px;
  line-height: 1.8;
  color: rgba(232, 238, 245, 0.86);
}

.block-head {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-bottom: 28px;
}

.block-index {
  padding-top: 9px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
  border-top: 1px solid var(--line);
}

.block-title { margin-bottom: 8px; }

.block-sub {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.v-note {
  writing-mode: vertical-rl;
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gold-deep);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 9. 卡片与色层 ---------- */
.glass-card {
  position: relative;
  padding: 24px;
  background: var(--glass);
  border: 1px solid rgba(232, 238, 245, 0.13);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
}

.glass-card--solid {
  background: var(--harbor);
  border-color: var(--line);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.paper-zone {
  padding: 32px;
  color: var(--paper-ink);
  background-image: linear-gradient(158deg, #F4EFE6 0%, #EDE5D7 62%, #E6DDCE 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.paper-zone h2,
.paper-zone h3,
.paper-zone h4 { color: #132033; }

.paper-zone p,
.paper-zone li { color: #2C3A48; }

.paper-zone strong { color: #132033; }

.paper-zone a { color: #0B4F63; }
.paper-zone a:hover { color: #0E3A3A; }

.paper-zone .divider-rule {
  background-image: repeating-linear-gradient(90deg, rgba(27, 37, 48, 0.24) 0 1px, transparent 1px 14px);
}

.paper-zone .block-sub,
.paper-zone .meta-row { color: rgba(27, 37, 48, 0.62); }

.paper-zone .block-index {
  color: #8A6A1C;
  border-top-color: rgba(27, 37, 48, 0.22);
}

.paper-zone .eyebrow { color: #8A6A1C; }

/* ---------- 10. 栅格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1000px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .grid--4 { grid-template-columns: 1fr; }
  .grid { gap: 18px; }
}

/* ---------- 11. 数字与标签 ---------- */
.stat { display: block; }

.stat-value {
  font-family: var(--font-num);
  font-size: clamp(38px, 4.6vw, 64px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.stat-label {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(201, 162, 74, 0.1);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.tag--pearl {
  color: var(--pearl);
  background: rgba(79, 209, 197, 0.1);
  border-color: rgba(79, 209, 197, 0.45);
}

.tag--alert {
  color: #FFDCE5;
  background: rgba(228, 87, 122, 0.22);
  border-color: rgba(228, 87, 122, 0.6);
}

/* ---------- 12. 筛选条 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: rgba(42, 30, 74, 0.45);
  border: 1px solid rgba(232, 238, 245, 0.1);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.filter-btn {
  padding: 7px 14px;
  font-size: 13.5px;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}

.filter-btn:hover {
  border-color: rgba(79, 209, 197, 0.45);
  background: rgba(79, 209, 197, 0.08);
}

.filter-btn[aria-pressed="true"] {
  font-weight: 600;
  color: #04201F;
  background: var(--pearl);
  border-color: var(--gold-deep);
}

.is-hidden { display: none !important; }

/* ---------- 13. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease, transform 0.12s ease;
}

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

.btn--download {
  color: #04201F;
  background: var(--pearl);
  border-color: var(--pearl);
}

.btn--download:hover {
  color: #04201F;
  background: #7EE5DB;
  border-color: var(--gold-deep);
}

.btn--primary {
  color: #2A1E0A;
  background: var(--gold);
  border-color: var(--gold);
}

.btn--primary:hover {
  color: #2A1E0A;
  background: #FFD977;
  border-color: var(--gold-deep);
}

.btn--ghost {
  color: var(--text);
  background: rgba(20, 48, 74, 0.35);
  border-color: var(--line);
}

.btn--ghost:hover {
  color: #FFFFFF;
  background: rgba(20, 48, 74, 0.7);
  border-color: var(--pearl);
}

/* ---------- 14. 面包屑 ---------- */
.breadcrumb {
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-list li + li::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--gold-deep);
  opacity: 0.75;
}

.breadcrumb-list a { color: var(--muted); }
.breadcrumb-list a:hover { color: var(--pearl); }

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

/* ---------- 15. 图片容器（页面阶段放置真实图） ---------- */
.figure-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(201, 162, 74, 0.28);
  border-radius: var(--radius-lg);
  background-image: linear-gradient(135deg, #0E2338 0%, #0B1B2B 55%, #2A1E4A 100%);
  box-shadow: var(--shadow-card);
}

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

.figure-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(180deg, transparent 52%, rgba(11, 27, 43, 0.5) 100%);
}

.figure-frame--wide { aspect-ratio: 21 / 9; }
.figure-frame--tall { aspect-ratio: 3 / 4; }

.figure-frame--paper {
  background-image: linear-gradient(158deg, #F4EFE6 0%, #E6DDCE 100%);
  border-color: rgba(27, 37, 48, 0.18);
}

.figure-frame--paper::after { display: none; }

.figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 16. 复制与折叠 ---------- */
.copy-value {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  background: rgba(11, 27, 43, 0.62);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
}

.copy-btn {
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pearl);
  border: 1px solid rgba(79, 209, 197, 0.4);
  border-radius: 4px;
  transition: background var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}

.copy-btn:hover {
  color: #FFFFFF;
  background: rgba(79, 209, 197, 0.16);
}

.copy-btn.is-copied {
  color: #04201F;
  background: var(--pearl);
  border-color: var(--gold-deep);
}

.disclosure {
  background: rgba(20, 48, 74, 0.28);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.disclosure + .disclosure { margin-top: 10px; }

.disclosure-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.disclosure-summary::-webkit-details-marker { display: none; }

.disclosure-summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold);
}

.disclosure[open] .disclosure-summary::after { content: "–"; }
.disclosure[open] .disclosure-summary { color: #FFFFFF; }

.disclosure-panel {
  padding: 0 16px 16px;
  font-size: 15px;
  color: var(--muted);
}

/* ---------- 17. 进入视口显现 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur) ease, transform var(--dur) ease;
}

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

/* ---------- 18. 滚动后收缩的命令栏 ---------- */
@media (min-width: 1101px) {
  .site-header.is-condensed .header-inner { padding-top: 4px; padding-bottom: 4px; }
  .site-header.is-condensed .brand-sub { opacity: 0.45; }
}

/* ---------- 19. 平板与移动端 ---------- */
@media (max-width: 1320px) {
  .header-inner { gap: 12px; }
  .nav-link { padding: 8px 7px; font-size: 12.5px; }
  .nav-index { font-size: 10px; }
}

@media (max-width: 1180px) {
  .header-utility .util-link { display: none; }
}

@media (max-width: 1100px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    bottom: 0;
    z-index: 70;
    padding: 20px var(--gutter) 40px;
    overflow-y: auto;
    background: rgba(9, 20, 31, 0.97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-item { border-bottom: 1px solid rgba(232, 238, 245, 0.08); }

  .nav-link {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 2px 12px;
    padding: 15px 4px;
    font-size: 16px;
  }

  .nav-index {
    grid-column: 1;
    grid-row: 1;
    font-size: 11px;
    alignment-baseline: middle;
  }

  .nav-label { grid-column: 2; grid-row: 1; }

  .nav-hint {
    position: static;
    grid-column: 2;
    grid-row: 2;
    left: auto;
    top: auto;
    padding: 0;
    font-size: 12.5px;
    white-space: normal;
    color: var(--muted);
    background: none;
    border: 0;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-link[aria-current="page"] {
    box-shadow: inset 3px 0 0 0 var(--pearl);
    background: rgba(201, 162, 74, 0.14);
  }

  .header-utility { gap: 6px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .section { padding: 52px 0; }
  .section--tight { padding: 34px 0; }
  .block-head { grid-template-columns: 44px minmax(0, 1fr); gap: 12px; }
  .paper-zone { padding: 22px; }
  .glass-card { padding: 18px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 20. 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;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .header-progress { transition: none; }
}