/* ==========================================================================
   金年汇官网 · 共享样式 /assets/site.css
   设计语言：数据叙事型门户；左右分置导航、框景与细线网格、
   金橙主行动 + 深墨绿功能底 + 青蓝状态刻度。
   ========================================================================== */

:root {
  /* 品牌色 */
  --gold: #E7871F;
  --gold-soft: #F6C77A;
  --ink-green: #123C33;
  --ink-green-2: #1E5A4A;
  --cyan: #138FA3;
  --cyan-soft: #6FC8D6;
  --sand: #F3EFE6;
  --paper: #FFFDF8;
  --ink: #191B18;
  --gray: #73796F;
  --alert: #B84A32;

  /* 线与面 */
  --line: rgba(25, 27, 24, 0.16);
  --line-strong: rgba(25, 27, 24, 0.34);
  --line-soft: rgba(25, 27, 24, 0.08);
  --line-on-dark: rgba(243, 239, 230, 0.18);

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺度 */
  --maxw: 1240px;
  --gutter: clamp(16px, 4vw, 36px);
  --radius: 2px;
  --ease: 160ms ease;
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(16px, 0.15vw + 15.2px, 17.5px);
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--sand);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
  color: var(--ink-green);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

img, svg, video { max-width: 100%; height: auto; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { cursor: pointer; }
[hidden] { display: none !important; }

::selection {
  background: var(--gold-soft);
  color: var(--ink-green);
}

/* ---------- 焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  box-shadow: inset 0 0 0 2px rgba(18, 60, 51, 0.35);
}

#main-content { scroll-margin-top: 118px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: var(--gutter);
  z-index: 200;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background: var(--ink-green);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--gold);
  border-radius: var(--radius);
  transition: top var(--ease);
}

.skip-link:focus {
  top: 10px;
}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--paper);
  border-bottom: 1px solid var(--line-strong);
  isolation: isolate;
}

.header-rail {
  position: relative;
  background: var(--paper);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--maxw);
  min-height: 76px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 品牌署名 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand-mark {
  position: relative;
  display: block;
  width: 30px;
  height: 30px;
  background: var(--ink-green);
  border-radius: var(--radius);
  flex: 0 0 auto;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid var(--gold-soft);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 7px;
  bottom: 7px;
  width: 14px;
  height: 3px;
  background: var(--gold);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-green);
  transition: color var(--ease);
}

.brand-tag {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--gray);
}

.brand:hover .brand-name { color: var(--cyan); }
.brand:hover .brand-mark { background: var(--ink-green-2); }

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-green);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: border-color var(--ease), color var(--ease);
}

.nav-toggle:hover {
  border-color: var(--green-2, var(--ink-green-2));
  color: var(--ink-green-2);
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--ease), opacity var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 主导航 */
.primary-nav { flex: 0 1 auto; }

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

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 12px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  transition: color var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  height: 2px;
  background: transparent;
  transition: background-color var(--ease);
}

.nav-link:hover { color: var(--ink-green-2); }
.nav-link:hover::after { background: var(--gold-soft); }

.nav-link[aria-current="page"] { color: var(--cyan); font-weight: 700; }
.nav-link[aria-current="page"]::after { background: var(--cyan); }

/* 状态条 */
.status-bar {
  position: relative;
  background: var(--ink-green);
  color: var(--sand);
  border-top: 1px solid rgba(246, 199, 122, 0.22);
}

.status-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  width: 100%;
  max-width: var(--maxw);
  min-height: 38px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.status-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(243, 239, 230, 0.82);
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-soft);
  box-shadow: 0 0 0 3px rgba(19, 143, 163, 0.28);
  flex: 0 0 auto;
}

.status-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.status-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 0 12px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background-color var(--ease), color var(--ease);
}

.status-cta:hover {
  background: var(--gold-soft);
  color: var(--ink-green);
}

.status-link {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  font-size: 12px;
  color: rgba(243, 239, 230, 0.92);
  text-decoration: none;
  border-bottom: 1px solid rgba(243, 239, 230, 0.35);
  transition: color var(--ease), border-color var(--ease);
}

.status-link:hover {
  color: var(--gold-soft);
  border-color: var(--gold-soft);
}

.status-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 26px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid rgba(243, 239, 230, 0.3);
  border-radius: var(--radius);
  color: rgba(243, 239, 230, 0.92);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  transition: border-color var(--ease), color var(--ease);
}

.status-toggle:hover {
  border-color: var(--gold-soft);
  color: var(--gold-soft);
}

.status-caret {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform var(--ease);
}

.status-toggle[aria-expanded="true"] .status-caret { transform: rotate(180deg); }

/* 状态展开面板 */
.status-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 5;
  background: var(--ink-green);
  border-top: 1px solid rgba(246, 199, 122, 0.3);
  box-shadow: 0 26px 52px rgba(18, 60, 51, 0.38);
}

.status-panel-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px var(--gutter) 26px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line-on-dark);
  border: 1px solid var(--line-on-dark);
}

.status-cell {
  padding: 14px 16px;
  background: var(--ink-green);
}

.status-cell dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-soft);
}

.status-cell dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(243, 239, 230, 0.82);
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  z-index: 6;
  pointer-events: none;
}

.scroll-progress-fill {
  display: block;
  width: 0;
  height: 100%;
  background: var(--cyan);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  background: var(--ink-green);
  color: var(--sand);
  margin-top: clamp(48px, 7vw, 96px);
}

.footer-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(38px, 5vw, 64px) var(--gutter) 0;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.9fr);
  gap: clamp(28px, 4vw, 64px);
  padding-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line-on-dark);
}

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

.footer-brand-name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.footer-summary {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(243, 239, 230, 0.74);
}

.footer-status {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--cyan-soft);
}

.footer-status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--cyan);
  flex: 0 0 auto;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-col-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
}

.footer-list {
  display: grid;
  gap: 8px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  font-size: 14px;
  color: rgba(243, 239, 230, 0.84);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.footer-link:hover {
  color: var(--gold-soft);
  border-color: rgba(246, 199, 122, 0.55);
}

.footer-link[aria-current="page"] {
  color: var(--gold-soft);
  border-color: var(--gold);
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.5fr);
  gap: 18px 24px;
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--line-on-dark);
}

.footer-contact-item { min-width: 0; }

.footer-contact-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-soft);
}

.footer-contact-value {
  display: block;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(243, 239, 230, 0.9);
  word-break: break-word;
}

.footer-contact-note {
  margin: 0;
  align-self: end;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(243, 239, 230, 0.58);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding: 16px 0 26px;
}

.footer-legal-item {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: rgba(243, 239, 230, 0.56);
}

/* ==========================================================================
   通用版式件
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container--narrow { max-width: 820px; }

.section { padding: clamp(32px, 5vw, 64px) 0; }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--ink-green-2);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--gold);
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 22px;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-green-2);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.tag--live {
  color: #0b5f6d;
  background: rgba(19, 143, 163, 0.09);
  border-color: rgba(19, 143, 163, 0.5);
}

.tag--gold {
  color: #8f4f0b;
  background: rgba(246, 199, 122, 0.26);
  border-color: rgba(231, 135, 31, 0.5);
}

.tag--alert {
  color: var(--alert);
  background: rgba(184, 74, 50, 0.08);
  border-color: rgba(184, 74, 50, 0.5);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background-color var(--ease), color var(--ease), border-color var(--ease), transform var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.btn--primary:hover {
  background: #d0761a;
  border-color: #d0761a;
}

.btn--outline {
  background: transparent;
  border-color: var(--ink-green);
  color: var(--ink-green);
}

.btn--outline:hover {
  background: var(--ink-green);
  color: var(--paper);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-green-2);
}

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

/* 面板 */
.panel {
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel--ink {
  background: var(--ink-green);
  border-color: rgba(243, 239, 230, 0.2);
  color: var(--sand);
}

.panel--ink h2,
.panel--ink h3 { color: var(--paper); }

/* 面包屑 */
.breadcrumb { margin: 0 0 18px; }

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--line-strong);
}

.breadcrumb-link {
  color: var(--ink-green-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.breadcrumb-link:hover {
  color: var(--ink);
  border-color: var(--gold);
}

.breadcrumb-item[aria-current="page"] { color: var(--ink); }

/* 图片容器基础规则（页面阶段放置 img / svg 占位） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background:
    linear-gradient(158deg, #EFE9DC 0%, #E6EBE4 62%, #DDE6E2 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  isolation: isolate;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(25, 27, 24, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 27, 24, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 2;
  border: 1px solid rgba(18, 60, 51, 0.16);
  pointer-events: none;
}

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

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--band { aspect-ratio: 21 / 9; }

/* ==========================================================================
   响应式：平板
   ========================================================================== */
@media (max-width: 1024px) {
  .nav-link { padding: 0 9px; font-size: 14px; }
  .nav-link::after { left: 9px; right: 9px; }
  .footer-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact-note { grid-column: 1 / -1; }
  .status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ==========================================================================
   响应式：移动导航（≤899px）
   ========================================================================== */
@media (max-width: 899px) {
  .header-inner { min-height: 64px; gap: 12px; }

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

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 8;
    display: none;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    background: var(--paper);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 20px 44px rgba(18, 60, 51, 0.16);
  }

  .primary-nav[data-open="true"] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--gutter) 18px;
  }

  .nav-item { width: 100%; }

  .nav-link {
    justify-content: flex-start;
    width: 100%;
    min-height: 54px;
    padding: 0 4px 0 14px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-link::after {
    left: 0;
    right: auto;
    top: 50%;
    bottom: auto;
    width: 3px;
    height: 0;
    transform: translateY(-50%);
    transition: height var(--ease), background-color var(--ease);
  }

  .nav-link:hover::after { height: 18px; }

  .nav-link[aria-current="page"]::after {
    height: 22px;
    background: var(--cyan);
  }

  .status-inner {
    padding-top: 8px;
    padding-bottom: 8px;
    row-gap: 8px;
  }
}

/* ==========================================================================
   响应式：手机
   ========================================================================== */
@media (max-width: 719px) {
  .status-note {
    flex: 1 1 100%;
    font-size: 11px;
    letter-spacing: 0;
  }

  .status-actions {
    flex: 1 1 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .status-grid { grid-template-columns: minmax(0, 1fr); }

  .footer-top { grid-template-columns: minmax(0, 1fr); }

  .footer-nav { gap: 22px; }

  .footer-contact { grid-template-columns: minmax(0, 1fr); gap: 16px; }

  .footer-legal { justify-content: flex-start; }
}

@media (max-width: 599px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }

  .brand-name { font-size: 16px; }
  .brand-tag { font-size: 10px; letter-spacing: 0.14em; }

  .nav-toggle { padding: 0 10px; }
}

@media (max-width: 479px) {
  .status-link { display: none; }
  .status-toggle { margin-left: auto; }
}

/* ==========================================================================
   动效降级
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .btn:hover { transform: none; }
  .skip-link { transition: none; }
}