/* ============================================================
   久赢服务平台 · 共享外壳样式 /assets/site.css
   深墨蓝档案底 + 电光青状态 + 琥珀金编号 + 暖纸阅读区
   ============================================================ */

/* ── 01 Reset ─────────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

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

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

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

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

table { border-collapse: collapse; border-spacing: 0; }

/* ── 02 设计变量 ──────────────────────────────────────────── */
:root {
  --jy-ink-900: #081827;
  --jy-ink-800: #0F2238;
  --jy-ink-700: #17324D;
  --jy-paper-050: #F4EFE4;
  --jy-paper-100: #E8DFCE;
  --jy-cyan-400: #2BE0CF;
  --jy-cyan-600: #0C8F95;
  --jy-amber-500: #E9A23B;
  --jy-violet-400: #8C87A8;
  --jy-violet-100: #DCD7E6;
  --jy-text-light: #F5F8FA;
  --jy-text-dark: #13202E;

  --jy-line-light: rgba(245, 248, 250, 0.10);
  --jy-line-cyan: rgba(43, 224, 207, 0.22);
  --jy-line-dark: rgba(19, 32, 46, 0.14);
  --jy-mute-light: rgba(245, 248, 250, 0.66);
  --jy-mute-dark: #465569;

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

  --jy-text-2xs: 12px;
  --jy-text-xs: 14px;
  --jy-text-sm: 16px;
  --jy-text-md: 18px;
  --jy-text-lg: 22px;
  --jy-text-xl: 28px;
  --jy-text-2xl: 36px;
  --jy-text-3xl: 56px;
  --jy-text-4xl: 88px;
  --jy-text-5xl: 120px;

  --jy-shell: 1440px;
  --jy-gutter: clamp(16px, 3vw, 40px);
  --jy-section-y: clamp(40px, 6vw, 88px);
  --jy-radius: 4px;
  --jy-radius-sm: 3px;
  --jy-z-header: 90;
  --jy-z-skip: 200;

  --jy-shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 24px 44px -38px #000;
  --jy-shadow-paper: 0 1px 0 rgba(255, 255, 255, 0.65) inset, 0 22px 40px -38px rgba(19, 32, 46, 0.6);
}

/* ── 03 基础排版 ──────────────────────────────────────────── */
body {
  min-height: 100vh;
  background: var(--jy-ink-900);
  color: var(--jy-text-light);
  font-family: var(--jy-font-body);
  font-size: var(--jy-text-sm);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--jy-font-heading);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

::selection {
  background: var(--jy-cyan-400);
  color: var(--jy-ink-900);
}

:focus-visible {
  outline: 2px solid var(--jy-cyan-400);
  outline-offset: 3px;
}

/* ── 04 容器与网格 ────────────────────────────────────────── */
.jy-container {
  width: 100%;
  max-width: var(--jy-shell);
  margin-inline: auto;
  padding-inline: var(--jy-gutter);
}

.jy-container--narrow { max-width: 960px; }

.jy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 28px);
}

@media (min-width: 720px) {
  .jy-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .jy-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .jy-grid--sidebar { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }
}

.jy-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 24px);
}

.jy-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.jy-visually-hidden {
  position: absolute;
  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;
}

/* ── 05 跳过链接 ──────────────────────────────────────────── */
.jy-skip {
  position: fixed;
  top: -140px;
  left: var(--jy-gutter);
  z-index: var(--jy-z-skip);
  padding: 12px 20px;
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-xs);
  font-weight: 800;
  line-height: 1.2;
  color: var(--jy-ink-900);
  background: var(--jy-cyan-400);
  border-radius: 0 0 var(--jy-radius) var(--jy-radius);
  transition: top 0.18s ease;
}

.jy-skip:focus,
.jy-skip:focus-visible { top: 0; }

/* ── 06 头部 ──────────────────────────────────────────────── */
.jy-header {
  position: sticky;
  top: 0;
  z-index: var(--jy-z-header);
  background: rgba(8, 24, 39, 0.58);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  backdrop-filter: blur(10px) saturate(130%);
  border-bottom: 1px solid rgba(245, 248, 250, 0.08);
  transition: background-color 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.jy-header.is-solid {
  background: rgba(8, 24, 39, 0.96);
  border-bottom-color: var(--jy-line-cyan);
  box-shadow: 0 22px 44px -38px #000;
}

.jy-header__inner {
  position: relative;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  width: 100%;
  max-width: var(--jy-shell);
  min-height: 70px;
  margin-inline: auto;
  padding: 10px var(--jy-gutter);
}

/* 品牌 */
.jy-brand {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
}

.jy-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  font-family: var(--jy-font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  color: var(--jy-ink-900);
  background: linear-gradient(145deg, var(--jy-cyan-400), var(--jy-cyan-600));
  border-radius: 2px 12px 2px 12px;
  box-shadow: 0 0 0 1px rgba(43, 224, 207, 0.4);
}

.jy-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.jy-brand__name {
  font-family: var(--jy-font-heading);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--jy-text-light);
}

.jy-brand__meta {
  font-family: var(--jy-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--jy-cyan-400);
  white-space: nowrap;
}

/* 导航 */
.jy-nav { margin-left: auto; }

.jy-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.jy-nav__item { display: block; }

.jy-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-xs);
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  color: rgba(245, 248, 250, 0.72);
  border-radius: var(--jy-radius-sm);
  transition: color 0.18s ease, background-color 0.18s ease;
}

.jy-nav__index {
  font-family: var(--jy-font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(43, 224, 207, 0.55);
  transition: color 0.18s ease;
}

.jy-nav__link:hover { color: var(--jy-text-light); }
.jy-nav__link:hover .jy-nav__index { color: var(--jy-cyan-400); }

.jy-nav__link[aria-current="page"] {
  font-weight: 800;
  color: var(--jy-ink-900);
  background: var(--jy-cyan-400);
}

.jy-nav__link[aria-current="page"] .jy-nav__index { color: rgba(8, 24, 39, 0.62); }

.jy-header__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

/* 移动导航按钮 */
.jy-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 14px;
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-xs);
  font-weight: 700;
  line-height: 1.2;
  color: var(--jy-cyan-400);
  background: rgba(43, 224, 207, 0.1);
  border: 1px solid rgba(43, 224, 207, 0.4);
  border-radius: var(--jy-radius-sm);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.jy-nav-toggle:hover {
  background: rgba(43, 224, 207, 0.18);
  border-color: var(--jy-cyan-400);
}

.jy-nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.jy-nav-toggle__bars::before,
.jy-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.jy-nav-toggle__bars::before { top: 0; }
.jy-nav-toggle__bars::after { bottom: 0; }

.jy-nav-toggle__label { display: inline-block; }

.jy-header[data-open] .jy-nav-toggle {
  background: rgba(43, 224, 207, 0.24);
  border-color: var(--jy-cyan-400);
}

.jy-header[data-open] .jy-nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.jy-header[data-open] .jy-nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* 滚动进度 */
.jy-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: rgba(245, 248, 250, 0.08);
  pointer-events: none;
}

.jy-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--jy-cyan-600), var(--jy-cyan-400) 58%, var(--jy-amber-500));
  transition: width 0.12s linear;
}

/* 头部响应式 */
@media (max-width: 1240px) {
  .jy-header__cta-secondary { display: none; }
}

@media (max-width: 1080px) {
  .jy-header__inner { flex-wrap: wrap; }

  .jy-nav {
    order: 3;
    flex: 1 1 100%;
    display: none;
    margin-left: 0;
    padding: 8px 0 16px;
    border-top: 1px solid rgba(245, 248, 250, 0.1);
  }

  .jy-header[data-open] .jy-nav { display: block; }

  .jy-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .jy-nav__link {
    width: 100%;
    padding: 13px 14px;
    font-size: var(--jy-text-sm);
    border-left: 2px solid transparent;
  }

  .jy-nav__link[aria-current="page"] {
    color: var(--jy-cyan-400);
    background: rgba(43, 224, 207, 0.14);
    border-left-color: var(--jy-cyan-400);
  }

  .jy-nav__link[aria-current="page"] .jy-nav__index { color: var(--jy-amber-500); }

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

  .jy-header__actions { margin-left: auto; }

  .jy-header__cta-secondary { display: none; }
}

@media (max-width: 600px) {
  .jy-brand__meta { display: none; }
  .jy-header__actions .jy-btn--primary { padding: 0 12px; }
}

@media (max-width: 420px) {
  .jy-brand__text { display: none; }
}

/* ── 07 按钮 ──────────────────────────────────────────────── */
.jy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 18px;
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-xs);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--jy-radius-sm);
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.jy-btn--primary {
  color: var(--jy-ink-900);
  background: var(--jy-cyan-400);
}

.jy-btn--primary:hover { background: #57F2E3; }

.jy-btn--ghost {
  color: var(--jy-text-light);
  background: transparent;
  border-color: rgba(245, 248, 250, 0.3);
}

.jy-btn--ghost:hover {
  color: var(--jy-cyan-400);
  border-color: var(--jy-cyan-400);
}

.jy-btn--amber {
  color: var(--jy-ink-900);
  background: var(--jy-amber-500);
}

.jy-btn--amber:hover { background: #F4B458; }

.jy-btn--paper {
  color: var(--jy-text-dark);
  background: var(--jy-paper-050);
  border-color: var(--jy-line-dark);
}

.jy-btn--paper:hover { background: #FFFBF2; }

/* ── 08 页脚 ──────────────────────────────────────────────── */
.jy-footer {
  background: var(--jy-ink-800);
  border-top: 1px solid var(--jy-line-cyan);
  color: var(--jy-text-light);
}

.jy-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  width: 100%;
  max-width: var(--jy-shell);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) var(--jy-gutter) clamp(28px, 4vw, 48px);
}

@media (min-width: 780px) {
  .jy-footer__top {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.1fr);
  }
}

.jy-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.jy-footer__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  font-family: var(--jy-font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1;
  color: var(--jy-ink-900);
  background: linear-gradient(145deg, var(--jy-cyan-400), var(--jy-cyan-600));
  border-radius: 2px 14px 2px 14px;
}

.jy-footer__name {
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-lg);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.jy-footer__desc {
  max-width: 36ch;
  font-size: var(--jy-text-xs);
  line-height: 1.8;
  color: var(--jy-mute-light);
}

.jy-footer__note {
  font-family: var(--jy-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--jy-amber-500);
}

.jy-footer__nav,
.jy-footer__contact {
  display: block;
  min-width: 0;
}

.jy-footer__nav-title {
  margin-bottom: 14px;
  font-family: var(--jy-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--jy-cyan-400);
}

.jy-footer__links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
}

@media (max-width: 500px) {
  .jy-footer__links { grid-template-columns: minmax(0, 1fr); }
}

.jy-footer__links a {
  display: inline-block;
  padding: 4px 0;
  font-size: var(--jy-text-xs);
  color: rgba(245, 248, 250, 0.76);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.jy-footer__links a:hover {
  color: var(--jy-cyan-400);
  border-bottom-color: var(--jy-cyan-400);
}

.jy-footer__contact-list {
  display: grid;
  gap: 14px;
}

.jy-footer__contact-item {
  display: grid;
  gap: 3px;
}

.jy-footer__contact-label {
  font-family: var(--jy-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(245, 248, 250, 0.45);
}

.jy-footer__contact-value {
  font-size: var(--jy-text-xs);
  line-height: 1.65;
  color: rgba(245, 248, 250, 0.86);
  overflow-wrap: anywhere;
}

.jy-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--jy-shell);
  margin-inline: auto;
  padding: 18px var(--jy-gutter) 26px;
  font-size: var(--jy-text-2xs);
  color: rgba(245, 248, 250, 0.52);
  border-top: 1px solid var(--jy-line-light);
}

.jy-footer__legal {
  font-family: var(--jy-font-mono);
  letter-spacing: 0.04em;
}

.jy-footer__routes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.jy-footer__routes a {
  display: inline-block;
  padding: 3px 0;
  transition: color 0.18s ease;
}

.jy-footer__routes a:hover { color: var(--jy-cyan-400); }

/* ── 09 面包屑 ────────────────────────────────────────────── */
.jy-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--jy-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 248, 250, 0.5);
}

.jy-breadcrumbs__link { transition: color 0.18s ease; }
.jy-breadcrumbs__link:hover { color: var(--jy-cyan-400); }
.jy-breadcrumbs__sep { color: rgba(245, 248, 250, 0.28); }
.jy-breadcrumbs__current { color: var(--jy-amber-500); }

.jy-breadcrumbs--paper { color: rgba(19, 32, 46, 0.55); }
.jy-breadcrumbs--paper .jy-breadcrumbs__link:hover { color: var(--jy-cyan-600); }
.jy-breadcrumbs--paper .jy-breadcrumbs__sep { color: rgba(19, 32, 46, 0.28); }
.jy-breadcrumbs--paper .jy-breadcrumbs__current { color: var(--jy-cyan-600); }

/* ── 10 排版件 ────────────────────────────────────────────── */
.jy-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--jy-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--jy-cyan-400);
}

.jy-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.jy-eyebrow--amber { color: var(--jy-amber-500); }

.jy-section { padding-block: var(--jy-section-y); }

.jy-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.jy-section__title {
  font-family: var(--jy-font-display);
  font-size: clamp(24px, 3.2vw, 36px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.jy-section__lead {
  max-width: 54ch;
  font-size: var(--jy-text-sm);
  line-height: 1.75;
  color: var(--jy-mute-light);
}

.jy-prose {
  font-size: var(--jy-text-sm);
  line-height: 1.85;
  color: rgba(245, 248, 250, 0.82);
}

.jy-prose > * + * { margin-top: 1em; }
.jy-prose h2 { font-size: var(--jy-text-xl); margin-top: 1.6em; }
.jy-prose h3 { font-size: var(--jy-text-lg); margin-top: 1.4em; }
.jy-prose strong { color: var(--jy-text-light); font-weight: 700; }
.jy-prose ul { list-style: disc; display: grid; gap: 0.5em; padding-left: 1.2em; }
.jy-prose ol { list-style: decimal; display: grid; gap: 0.5em; padding-left: 1.2em; }

.jy-prose a {
  color: var(--jy-cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.jy-prose--paper { color: #3C4B5C; }
.jy-prose--paper strong { color: var(--jy-text-dark); }
.jy-prose--paper a { color: var(--jy-cyan-600); }
.jy-prose--paper h2,
.jy-prose--paper h3 { color: var(--jy-text-dark); }

.jy-rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--jy-line-light);
}

.jy-rule--amber { background: linear-gradient(90deg, var(--jy-amber-500), transparent); }

/* ── 11 档案抽屉卡 ────────────────────────────────────────── */
.jy-drawer {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--jy-ink-800);
  border: 1px solid var(--jy-line-light);
  border-radius: var(--jy-radius);
  box-shadow: var(--jy-shadow-card);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.jy-drawer:hover { border-color: var(--jy-line-cyan); }

.jy-drawer__index {
  font-family: var(--jy-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--jy-amber-500);
}

.jy-drawer__title {
  font-family: var(--jy-font-heading);
  font-size: var(--jy-text-md);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.jy-drawer__text {
  font-size: var(--jy-text-xs);
  line-height: 1.78;
  color: var(--jy-mute-light);
}

.jy-drawer--paper {
  color: var(--jy-text-dark);
  background: var(--jy-paper-050);
  border-color: var(--jy-line-dark);
  box-shadow: var(--jy-shadow-paper);
}

.jy-drawer--paper .jy-drawer__text { color: var(--jy-mute-dark); }
.jy-drawer--paper .jy-drawer__index { color: var(--jy-cyan-600); }

.jy-drawer--violet {
  background: rgba(140, 135, 168, 0.14);
  border-color: rgba(140, 135, 168, 0.36);
}

.jy-drawer--violet .jy-drawer__index { color: var(--jy-violet-100); }

/* ── 12 标签胶囊 ──────────────────────────────────────────── */
.jy-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--jy-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--jy-cyan-400);
  background: rgba(43, 224, 207, 0.1);
  border: 1px solid rgba(43, 224, 207, 0.34);
  border-radius: 999px;
}

.jy-chip--amber {
  color: var(--jy-amber-500);
  background: rgba(233, 162, 59, 0.12);
  border-color: rgba(233, 162, 59, 0.38);
}

.jy-chip--violet {
  color: var(--jy-violet-100);
  background: rgba(140, 135, 168, 0.2);
  border-color: rgba(140, 135, 168, 0.46);
}

/* ── 13 图片容器 ──────────────────────────────────────────── */
.jy-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(43, 224, 207, 0.18), transparent 62%),
    radial-gradient(120% 100% at 100% 100%, rgba(233, 162, 59, 0.16), transparent 58%),
    var(--jy-ink-700);
  border: 1px solid var(--jy-line-cyan);
  border-radius: var(--jy-radius);
}

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

.jy-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 224, 207, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 224, 207, 0.09) 1px, transparent 1px);
  background-size: 36px 36px;
}

.jy-media--wide { aspect-ratio: 21 / 9; }
.jy-media--square { aspect-ratio: 1 / 1; }
.jy-media--tall { aspect-ratio: 3 / 4; }

.jy-media--paper {
  background:
    radial-gradient(120% 100% at 8% 0%, rgba(12, 143, 149, 0.16), transparent 60%),
    radial-gradient(120% 100% at 100% 100%, rgba(233, 162, 59, 0.18), transparent 58%),
    var(--jy-paper-100);
  border-color: var(--jy-line-dark);
}

.jy-media--plain::after { content: none; }

.jy-media__caption {
  margin-top: 10px;
  font-family: var(--jy-font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--jy-mute-light);
}

/* ── 14 分段切换 ──────────────────────────────────────────── */
.jy-tabs {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 26px);
}

.jy-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--jy-line-light);
}

.jy-tabs__tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-family: var(--jy-font-heading);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  color: rgba(245, 248, 250, 0.66);
  background: rgba(245, 248, 250, 0.05);
  border: 1px solid transparent;
  border-radius: var(--jy-radius-sm);
  cursor: pointer;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.jy-tabs__tab:hover {
  color: var(--jy-text-light);
  border-color: rgba(43, 224, 207, 0.4);
}

.jy-tabs__tab[aria-selected="true"] {
  color: var(--jy-ink-900);
  background: var(--jy-cyan-400);
  border-color: var(--jy-cyan-400);
}

.jy-tabs__panel { display: block; }
.jy-tabs__panel[hidden] { display: none; }

/* ── 15 显现动画 ──────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] { transition: opacity 0.55s ease, transform 0.55s ease; }
  [data-reveal].is-armed { opacity: 0; transform: translateY(16px); }
  [data-reveal].is-armed.is-visible { opacity: 1; transform: none; }
}

/* ── 16 降级动效 ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}