/* ==========================================================================
   宝盈服务 · 共享站点样式 /assets/site.css
   框架式导航 + 近单色深空蓝体系 + 金色单一强调
   ========================================================================== */

:root {
  /* 色板 */
  --ink: #0A1B33;
  --deep: #0F2846;
  --steel: #16385F;
  --line: #2A527C;
  --text: #DCE8F5;
  --muted: #8FA6BE;
  --gold: #E4B04A;
  --gold-dim: #A87C2A;
  --jade: #2FA5A0;
  --jade-light: #7FD8D2;
  --paper: #F5F8FC;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 尺寸 */
  --rail-w: 76px;
  --head-h: 72px;
  --wrap: 1200px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 20px);
}

body {
  margin: 0;
  min-height: 100vh;
  padding-left: var(--rail-w);
  padding-top: var(--head-h);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--text);
}

h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; font-weight: 700; }

p { margin: 0 0 1.1em; }

a { color: var(--gold); text-decoration: none; }
a:hover { color: #F2C86A; }

img, svg, video { max-width: 100%; height: auto; }

ul, ol { margin: 0 0 1.1em; padding-left: 1.35em; }
li { margin-bottom: 0.35em; }

hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

code, kbd, samp { font-family: var(--font-mono); font-size: 0.875em; }

::selection { background: rgba(228, 176, 74, 0.28); color: #fff; }

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

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  transform: translateY(-200%);
  padding: 11px 18px;
  background: var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: transform 0.18s var(--ease);
}
.skip-link:focus { transform: translateY(0); color: var(--ink); }

/* ---------- 左侧框架条 ---------- */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 22px 0 26px;
  background: var(--deep);
  border-right: 1px solid var(--line);
}

.rail-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(228, 176, 74, 0.12);
}

.rail-brand {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.16em;
  color: var(--text);
  margin-top: 4px;
}

.rail-line {
  flex: 1 1 auto;
  width: 1px;
  min-height: 40px;
  background: linear-gradient(180deg, var(--line) 0%, rgba(42, 82, 124, 0) 100%);
}

.rail-meta {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

/* ---------- 顶部框架栏 ---------- */
.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: var(--rail-w);
  height: var(--head-h);
  z-index: 80;
  background: rgba(10, 27, 51, 0.86);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.site-header[data-scrolled="true"] {
  background: rgba(10, 27, 51, 0.97);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.38);
}

.header-inner {
  height: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

/* ---------- 品牌 ---------- */
.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  margin-right: auto;
  text-decoration: none;
  flex: none;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--text);
}

.brand:hover .brand-name { color: var(--gold); }

.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--muted);
}

/* ---------- 导航 ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-list li { margin: 0; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}

.nav-link:hover { color: var(--text); }
.nav-link:hover::after { transform: scaleX(0.5); }

.nav-link[aria-current="page"] { color: var(--gold); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tool-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 5px 9px;
  white-space: nowrap;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease),
              box-shadow 0.18s var(--ease);
}

.btn-gold {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold-dim);
  white-space: nowrap;
}
.btn-gold:hover {
  background: #F0C160;
  color: var(--ink);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(228, 176, 74, 0.24);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover {
  color: var(--gold);
  border-color: var(--gold-dim);
  transform: translateY(-1px);
}

.btn-line {
  background: transparent;
  color: var(--gold);
  border-color: var(--gold-dim);
  border-radius: 2px;
}
.btn-line:hover {
  background: rgba(228, 176, 74, 0.1);
  color: var(--gold);
}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.nav-toggle:hover { border-color: var(--gold-dim); color: var(--gold); }
.nav-toggle[aria-expanded="true"] {
  border-color: var(--gold);
  color: var(--gold);
}

.nav-toggle-bars { display: block; width: 16px; }
.nav-toggle-bars i {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 0.18s var(--ease);
}
.nav-toggle-bars i + i { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child {
  transform: translateY(3px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* ---------- 滚动进度 ---------- */
.progress-track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
  overflow: hidden;
}
.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold));
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  background: var(--deep);
  border-top: 1px solid var(--line);
  color: var(--text);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(228, 176, 74, 0) 100%);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 64px 24px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 44px 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--text);
}

.footer-slogan {
  margin: 0;
  max-width: 24em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.footer-badge {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--gold-dim);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

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

.footer-col-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col-title::before {
  content: "";
  display: block;
  width: 14px;
  height: 1px;
  background: var(--gold);
  flex: none;
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-links li { margin: 0 0 10px; }

.footer-links a {
  display: inline-block;
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.footer-links a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold-dim);
}

.footer-contact {
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid var(--steel);
}

.footer-contact-line {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.01em;
  color: var(--text);
  word-break: break-word;
}

.footer-hours {
  margin: 0;
  max-width: 72ch;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.footer-legal {
  margin-top: 26px;
  padding: 20px 0 34px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.footer-legal p { margin: 0; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 85;
  padding: 10px 14px;
  background: var(--steel);
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease),
              visibility 0.2s, border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover { border-color: var(--gold-dim); color: var(--gold); }

/* ==========================================================================
   通用基础组件（供页面专属样式复用）
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 64px 0; }
.section--tight { padding: 40px 0; }

.section-head {
  margin-bottom: 32px;
  max-width: 62ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  display: block;
  width: 18px;
  height: 1px;
  background: var(--gold);
}

.mono { font-family: var(--font-mono); font-size: 0.875em; letter-spacing: 0.02em; }
.muted { color: var(--muted); }
.gold { color: var(--gold); }
.jade { color: var(--jade-light); }

.grid-7-5 {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 40px;
  align-items: start;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.prose { max-width: 68ch; }
.prose > :last-child { margin-bottom: 0; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose strong { color: #fff; font-weight: 700; }

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.breadcrumb li { margin: 0; display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--line); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb [aria-current="page"] { color: var(--text); }

/* 资料卡 */
.card {
  position: relative;
  background: var(--deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02), 0 12px 30px rgba(0, 0, 0, 0.22);
  overflow: hidden;
}
.card-head {
  padding: 16px 20px;
  background: var(--steel);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.card-body { padding: 22px 20px; }
.card-body > :last-child { margin-bottom: 0; }

/* 标签 */
.tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}
.tag-jade {
  border-color: rgba(47, 165, 160, 0.5);
  color: var(--jade-light);
}

/* 图片占位容器 */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--steel) 0%, var(--ink) 100%);
  aspect-ratio: 16 / 10;
  width: 100%;
}

.media-frame > img,
.media-frame > svg,
.media-frame > picture > img,
.media-frame > video {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(42, 82, 124, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 82, 124, 0.4) 1px, transparent 1px);
  background-size: 48px 48px;
}

.media-frame--plain::before { display: none; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* 相邻模块之间的呼吸间隔 */
.stack > * + * { margin-top: 24px; }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1180px) {
  .brand-tag { display: none; }
  .nav { gap: 16px; }
  .nav-link { padding: 10px 9px; font-size: 14px; }
  .nav-link::after { left: 9px; right: 9px; }
}

@media (max-width: 1079px) {
  :root { --rail-w: 60px; }

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

  .nav {
    position: fixed;
    top: var(--head-h);
    left: var(--rail-w);
    right: 0;
    bottom: 0;
    z-index: 75;
    display: block;
    margin: 0;
    padding: 22px 24px 56px;
    overflow-y: auto;
    background: var(--deep);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease),
                visibility 0.18s linear;
  }

  .nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-bottom: 26px;
  }

  .nav-link {
    display: block;
    padding: 15px 4px;
    font-size: 17px;
    border-bottom: 1px solid var(--steel);
  }
  .nav-link::after {
    left: 0;
    right: auto;
    width: 20px;
    bottom: -1px;
  }
  .nav-link:hover::after { transform: scaleX(0.6); }
  .nav-link[aria-current="page"]::after { transform: scaleX(1); }

  .nav-tools {
    flex-wrap: wrap;
    gap: 10px;
  }
  .nav-tools .btn-gold { width: 100%; }

  .grid-7-5 { grid-template-columns: 1fr; gap: 28px; }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 28px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  :root { --rail-w: 0px; --head-h: 64px; }

  .site-rail { display: none; }

  .header-inner { padding: 0 16px; gap: 12px; }
  .brand-name { font-size: 18px; }
  .nav-toggle { padding: 8px 10px; }
  .nav-toggle-label { display: none; }

  .nav { left: 0; border-left: 0; }

  .container { padding: 0 16px; }
  .section { padding: 44px 0; }

  .footer-inner { padding: 46px 16px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-legal { flex-direction: column; }
  .to-top { right: 14px; bottom: 14px; padding: 9px 12px; }

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

@media (max-width: 420px) {
  h1 { font-size: 2.1rem; }
}

/* 触屏不触发悬停位移 */
@media (hover: none) {
  .btn:hover { transform: none; box-shadow: none; }
}

/* ---------- 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;
  }

  .btn:hover,
  .btn-ghost:hover,
  .btn-line:hover { transform: none; }

  .nav { transform: none; }
  .nav[data-open] { transform: none; }
  .to-top { transform: none; }
}