/* ============================================================
   泛亚中心 · PANYA — 共享样式 /assets/site.css
   设计语言：精密 1px 网格 · 直角 · 等宽参数锚点 · 近单色体系
   ============================================================ */

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

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

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

/* ---------- CSS 变量 ---------- */
:root {
  /* 色彩 */
  --c-indigo: #1B2A4A;
  --c-ink: #0E1830;
  --c-indigo-mid: #2E4272;
  --c-indigo-soft: #4A5F8E;
  --c-orange: #FF6B35;
  --c-orange-text: #C6431A;
  --c-cyan: #00E5C7;
  --c-paper: #F4F6F9;
  --c-grid: #E3E8F0;
  --c-text: #11161F;
  --c-text-dark: #E9EEF7;

  /* 排版 */
  --font-heading: "Archivo Narrow", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Noto Sans Mono CJK SC", monospace;

  /* 尺度 */
  --w-wide: 1360px;
  --w-narrow: 720px;
  --header-h: 74px;
  --gutter: clamp(16px, 4vw, 48px);
  --line: 1px solid var(--c-grid);
  --line-dark: 1px solid rgba(233, 238, 247, 0.16);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 基础与中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--c-text);
  background-color: var(--c-paper);
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: inherit;
}

h1 { font-size: clamp(40px, 6vw, 88px); }
h2 { font-size: clamp(26px, 3.4vw, 44px); }
h3 { font-size: clamp(19px, 2vw, 26px); }
h4 { font-size: 17px; }

p { max-width: var(--w-narrow); }

strong { font-weight: 600; }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--c-grid);
  padding: 0.1em 0.4em;
  border-radius: 0;
}

::selection { background: var(--c-orange); color: #fff; }

:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

/* 深色反白区域内焦点更清晰 */
.site-header :focus-visible,
.site-footer :focus-visible { outline-color: var(--c-cyan); }

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-160%);
  background: var(--c-orange);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border-radius: var(--radius);
  transition: transform 180ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 容器与网格 ---------- */
.container,
.header-inner,
.footer-inner {
  width: 100%;
  max-width: var(--w-wide);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-indigo);
  color: var(--c-text-dark);
  border-bottom: 1px solid rgba(0, 229, 199, 0.28);
}
.site-header[data-scrolled="true"] {
  box-shadow: 0 1px 0 rgba(0, 229, 199, 0.28), 0 10px 30px rgba(14, 24, 48, 0.35);
}

/* 顶部滚动进度条 */
.progress-rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(233, 238, 247, 0.12);
}
.progress-bar {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--c-orange);
}

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

/* 左端铭牌 */
.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  background: var(--c-indigo-mid);
  border: 1px solid rgba(0, 229, 199, 0.4);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}
.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.brand-name {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #fff;
  white-space: nowrap;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--c-indigo-soft);
  white-space: nowrap;
}

/* 版本徽标 */
.version-badge {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  padding: 5px 9px;
  border: 1px solid rgba(0, 229, 199, 0.45);
  border-radius: var(--radius);
  color: var(--c-cyan);
  background: rgba(0, 229, 199, 0.08);
  white-space: nowrap;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(233, 238, 247, 0.28);
  border-radius: var(--radius);
  color: var(--c-text-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 18px;
}
.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  background: var(--c-orange);
  transition: transform 180ms var(--ease), opacity 180ms var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: block;
  padding: 9px 12px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--c-text-dark);
  border-bottom: 2px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.nav-link:hover { color: #fff; background: rgba(233, 238, 247, 0.07); }
.nav-link[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--c-orange);
  background: rgba(255, 107, 53, 0.12);
}

.nav-cta {
  display: inline-block;
  padding: 10px 18px;
  background: var(--c-orange);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  border: 1px solid var(--c-orange);
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
  white-space: nowrap;
}
.nav-cta:hover { background: transparent; color: var(--c-orange); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-ink);
  color: var(--c-text-dark);
  margin-top: 96px;
  border-top: 1px solid rgba(0, 229, 199, 0.35);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px 32px;
  padding-top: 56px;
  padding-bottom: 40px;
}
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.footer-brand .brand-mark { background: var(--c-indigo); }
.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: #fff;
}
.footer-tagline {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(233, 238, 247, 0.72);
  max-width: 34ch;
}
.footer-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--c-cyan);
  max-width: none;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-indigo-soft);
  margin-bottom: 16px;
}
.footer-list { display: grid; gap: 10px; }
.footer-link,
.footer-text {
  font-size: 14.5px;
  color: rgba(233, 238, 247, 0.86);
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.footer-link:hover { color: #fff; border-bottom-color: var(--c-orange); }
.footer-link--mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }
.footer-text { display: block; line-height: 1.65; color: rgba(233, 238, 247, 0.7); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  border-top: var(--line-dark);
  padding: 18px var(--gutter);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: rgba(233, 238, 247, 0.6);
}
.footer-legal-sep { color: var(--c-indigo-soft); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.btn-primary {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: #fff;
}
.btn-primary:hover { background: #fff; border-color: #fff; color: var(--c-orange-text); }
.btn-ghost {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}
.btn-ghost:hover { background: var(--c-indigo); border-color: var(--c-indigo); color: #fff; }

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--c-indigo-soft);
  padding: 18px 0;
}
.breadcrumb-item { color: var(--c-indigo-soft); }
.breadcrumb-item a:hover { color: var(--c-orange-text); text-decoration: underline; }
.breadcrumb-item[aria-current="page"] { color: var(--c-text); }
.breadcrumb-sep { color: var(--c-grid); }

/* ---------- 数据带 / 分隔 ---------- */
.rule-band {
  border-top: var(--line);
  border-bottom: var(--line);
  background: var(--c-paper);
}

/* ---------- 等宽数字锚点 ---------- */
.mono-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 76px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  padding: 6px 12px;
  background: rgba(46, 66, 114, 0.1);
  border-left: 3px solid var(--c-orange);
  color: var(--c-indigo);
}
.mono-num--cyan { border-left-color: var(--c-cyan); }
.mono-num--inverse {
  background: rgba(0, 229, 199, 0.12);
  color: var(--c-cyan);
  border-left-color: var(--c-cyan);
}

/* ---------- 状态点 ---------- */
.status-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-indigo-soft);
}
.status-dot--ok { background: var(--c-cyan); box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.18); }
.status-dot--pending { background: transparent; border: 1.5px solid var(--c-indigo-soft); }

/* ---------- 面板 / 卡片 ---------- */
.panel {
  background: #fff;
  border: var(--line);
  border-radius: var(--radius);
}
.panel-head {
  padding: 16px 20px;
  border-bottom: var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.panel-body { padding: 20px; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  background: var(--c-grid);
  color: var(--c-indigo);
  border-radius: var(--radius);
  white-space: nowrap;
}
.tag--orange { background: rgba(255, 107, 53, 0.16); color: var(--c-orange-text); }
.tag--dark { background: rgba(233, 238, 247, 0.14); color: var(--c-text-dark); }

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-indigo-mid);
  border: 1px solid rgba(0, 229, 199, 0.24);
  border-radius: var(--radius);
}
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.05);
}

/* ---------- 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .grid-12 { gap: 20px; }
  .col-span-3, .col-span-4, .col-span-5, .col-span-7, .col-span-8 { grid-column: span 6; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }

  .header-inner { flex-wrap: wrap; row-gap: 0; }
  .nav-toggle { display: inline-flex; }

  /* 导航折叠为横向滚动条带 */
  .site-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    padding: 14px 0 18px;
    border-top: var(--line-dark);
  }
  .site-nav[data-open="true"] { display: flex; }

  .nav-list {
    flex-direction: row;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }
  .nav-item { scroll-snap-align: start; flex: 0 0 auto; }
  .nav-link {
    border: 1px solid rgba(233, 238, 247, 0.22);
    border-bottom-width: 1px;
    border-radius: var(--radius);
    white-space: nowrap;
    padding: 8px 14px;
  }
  .nav-link[aria-current="page"] {
    border-color: var(--c-orange);
    background: rgba(255, 107, 53, 0.16);
  }
  .nav-cta { text-align: center; }

  body { font-size: 16px; }
  .brand-sub { display: none; }
  p { max-width: none; }
}

@media (max-width: 620px) {
  .footer-inner { grid-template-columns: 1fr; gap: 30px; padding-top: 42px; }
  .grid-12 { grid-template-columns: 1fr; }
  .col-span-3, .col-span-4, .col-span-5, .col-span-6, .col-span-7, .col-span-8, .col-span-12 { grid-column: span 1; }
  .site-footer { margin-top: 64px; }
  .version-badge { font-size: 11px; padding: 4px 7px; }
  .header-left { gap: 8px; }
  .nav-toggle-label { display: none; }
}

/* ---------- 动效降级 ---------- */
@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;
  }
  .reveal { opacity: 1; transform: none; }
  .skip-link { transition: none; }
}