/* ============================================================
   夜驿面板 · 共享外壳样式 /assets/site.css
   1. Reset  2. Tokens  3. Base  4. Header  5. Footer
   6. Layout  7. Components  8. Media frame  9. Motion
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
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%; }

a { color: inherit; }

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #14101A;
  --ink-soft: #1C1622;
  --plum: #3B1A4D;
  --wine: #7C2338;
  --wine-lit: #8F2A42;
  --gold: #E0AA4E;
  --gold-line: rgba(224, 170, 78, 0.34);
  --gold-ghost: rgba(224, 170, 78, 0.12);
  --paper: #F5EDDC;
  --paper-ink: #241A15;
  --paper-line: #D8CDB8;
  --jade: #1E4D3F;
  --mint: #6FE3C4;
  --rust: #C75C2B;
  --muted: #C9C1D4;

  --font-heading: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --fs-12: 0.75rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-18: 1.125rem;
  --fs-24: clamp(1.25rem, 1.4vw + 0.85rem, 1.5rem);
  --fs-32: clamp(1.5rem, 2vw + 1rem, 2rem);
  --fs-40: clamp(1.75rem, 3vw + 1rem, 2.5rem);
  --fs-56: clamp(2rem, 5vw + 0.5rem, 3.5rem);
  --fs-72: clamp(2.5rem, 7vw + 0.5rem, 4.5rem);

  --bezier: cubic-bezier(0.22, 0.61, 0.36, 1);
  --radius: 3px;
  --header-h: 78px;
  --measure: 62ch;
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(circle at 10% -12%, rgba(59, 26, 77, 0.88), transparent 56%),
    radial-gradient(circle at 92% -4%, rgba(124, 35, 56, 0.42), transparent 52%),
    repeating-linear-gradient(90deg, rgba(224, 170, 78, 0.045) 0 1px, transparent 1px 130px);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.004em;
  color: var(--paper);
}

p { text-wrap: pretty; }

a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

::selection { background: var(--wine); color: #FFF4E2; }

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

.visually-hidden {
  position: absolute !important;
  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;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.skip-link {
  position: fixed;
  inset-block-start: 8px;
  inset-inline-start: 8px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--paper);
  color: var(--paper-ink);
  font-size: var(--fs-14);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.95);
  transform: translateY(-220%);
  transition: transform 200ms var(--bezier);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 4. Header ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  width: 100%;
  background: transparent;
  border-block-end: 1px solid transparent;
  transition: background-color 240ms var(--bezier),
              border-color 240ms var(--bezier),
              box-shadow 240ms var(--bezier);
}

.site-header[data-scrolled="true"] {
  background: rgba(59, 26, 77, 0.965);
  border-block-end-color: var(--gold-line);
  box-shadow: 0 18px 40px -32px rgba(0, 0, 0, 1);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 28px);
  width: 100%;
  max-width: 1320px;
  min-height: var(--header-h);
  margin-inline: auto;
  padding-block: 12px;
  padding-inline: clamp(16px, 4vw, 48px);
  transition: padding-block 240ms var(--bezier);
}

.site-header[data-scrolled="true"] .header-inner { padding-block: 8px; }

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand__mark {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.25rem;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: 0.14em;
  color: var(--gold);
  white-space: nowrap;
}

.primary-nav { margin-inline-start: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 0.8vw, 14px);
}

.nav-list__item { display: block; }

.nav-list__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 4px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms var(--bezier);
}

.nav-list__link::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0;
  transition: opacity 180ms var(--bezier);
}

.nav-list__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms var(--bezier);
}

.nav-list__link:hover { color: var(--paper); }
.nav-list__link:hover::after { transform: scaleX(1); }

.nav-list__link[aria-current="page"] { color: var(--paper); font-weight: 600; }
.nav-list__link[aria-current="page"]::before { opacity: 1; }
.nav-list__link[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-inline-start: auto;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  background: rgba(20, 16, 26, 0.42);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--paper);
  transition: transform 200ms var(--bezier), opacity 160ms var(--bezier);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) 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(-7px) rotate(-45deg); }

.header-plate {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 1px;
  padding: 6px 12px;
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  background: rgba(20, 16, 26, 0.32);
  line-height: 1.3;
}

.header-plate__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.header-plate__time { font-size: var(--fs-12); color: var(--muted); }

.header-cta { flex: 0 0 auto; white-space: nowrap; }

.header-progress {
  position: absolute;
  inset-inline: 0;
  inset-block-end: -1px;
  height: 2px;
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--rust));
  transform: scaleX(0);
  transform-origin: left center;
}

/* ---------- 5. Footer ---------- */
.site-footer {
  margin-block-start: clamp(48px, 8vw, 96px);
  padding-block: clamp(32px, 6vw, 72px);
  background-image: linear-gradient(180deg, rgba(59, 26, 77, 0) 0%, rgba(59, 26, 77, 0.34) 100%);
  border-block-start: 1px solid var(--gold-line);
}

.footer-inner {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.footer-plate {
  position: relative;
  padding: clamp(24px, 3.4vw, 44px);
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  box-shadow: 0 40px 70px -48px rgba(0, 0, 0, 1);
}

.footer-plate::before {
  content: "";
  position: absolute;
  inset: 10px;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 5px 5px, #B8AB92 0 3px, transparent 3.5px),
    radial-gradient(circle at 5px 5px, #B8AB92 0 3px, transparent 3.5px),
    radial-gradient(circle at 5px 5px, #B8AB92 0 3px, transparent 3.5px),
    radial-gradient(circle at 5px 5px, #B8AB92 0 3px, transparent 3.5px);
  background-repeat: no-repeat;
  background-position: left top, right top, left bottom, right bottom;
  background-size: 10px 10px;
}

.footer-brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding-block-end: clamp(16px, 2vw, 24px);
  margin-block-end: clamp(20px, 2.8vw, 32px);
  border-block-end: 1px solid var(--paper-line);
}

.footer-brand__mark {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--fs-24);
  letter-spacing: 0.03em;
  color: var(--paper-ink);
}

.footer-brand__tagline {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: #6C5A4A;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

.footer-col__title {
  margin-block-end: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--wine);
}

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

.footer-link {
  display: inline-block;
  font-size: var(--fs-14);
  color: #33261E;
  text-decoration: none;
  border-block-end: 1px solid transparent;
  transition: color 160ms var(--bezier), border-color 160ms var(--bezier);
}

.footer-link:hover { color: var(--wine); border-block-end-color: currentColor; }

.footer-contact-item {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: #33261E;
  word-break: break-word;
}

.footer-meta {
  display: grid;
  gap: 8px;
  margin-block-start: clamp(20px, 3vw, 32px);
  padding-block-start: clamp(16px, 2vw, 24px);
  border-block-start: 1px solid var(--paper-line);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: #5C4C3E;
}

.footer-meta__icp { color: var(--wine); font-weight: 700; }
.footer-meta__note { max-width: var(--measure); }
.footer-meta__year { color: #6C5A4A; }

/* ---------- 6. Layout ---------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.page { padding-block-start: var(--header-h); }
.page--overlay { padding-block-start: 0; }

.section { padding-block: clamp(40px, 6vw, 88px); }

.stack > * + * { margin-block-start: clamp(12px, 1.6vw, 20px); }

.split { display: grid; grid-template-columns: 1fr; gap: clamp(24px, 3vw, 48px); }

.grid { display: grid; gap: clamp(16px, 2.4vw, 32px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ---------- 7. Components ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--gold);
}

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

.display {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--fs-72);
  line-height: 1.04;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.lead {
  max-width: var(--measure);
  font-size: var(--fs-18);
  line-height: 1.8;
  color: var(--muted);
}

.vertical-note {
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding-block: 4px;
  padding-inline-start: 10px;
  border-inline-start: 1px solid var(--gold-line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.3em;
  color: var(--gold);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background-color 200ms var(--bezier),
              border-color 200ms var(--bezier),
              color 200ms var(--bezier),
              transform 160ms var(--bezier);
}

.btn--primary {
  background: var(--wine);
  color: #FFF6E6;
  border-color: var(--gold-line);
  box-shadow: 0 14px 26px -20px rgba(124, 35, 56, 1);
}

.btn--primary:hover { background: var(--wine-lit); border-color: var(--gold); }
.btn--primary:active { transform: translateY(1px); }

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--gold-line);
}

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

.paper-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  box-shadow: 0 26px 48px -38px rgba(0, 0, 0, 0.95);
}

.paper-card::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(216, 205, 184, 0.85);
  border-radius: 2px;
  pointer-events: none;
}

.paper-card h2,
.paper-card h3,
.paper-card h4 { color: var(--paper-ink); }

.paper-card p { color: #33261E; }

.plate-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 30px);
  background-image: linear-gradient(160deg, rgba(59, 26, 77, 0.94), rgba(20, 16, 26, 0.97));
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
}

.plate-card::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: 54px;
  height: 3px;
  background: var(--gold);
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--muted);
  background: rgba(20, 16, 26, 0.4);
}

.status-tag--ok { color: #9CEBCB; background: rgba(30, 77, 63, 0.62); }
.status-tag--warn { color: #F3AE84; background: rgba(199, 92, 43, 0.3); }
.status-tag--info { color: var(--gold); background: rgba(224, 170, 78, 0.16); }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.breadcrumbs__link {
  color: var(--muted);
  text-decoration: none;
  border-block-end: 1px solid transparent;
  transition: color 160ms var(--bezier), border-color 160ms var(--bezier);
}

.breadcrumbs__link:hover { color: var(--mint); border-block-end-color: currentColor; }

.breadcrumbs__sep { color: rgba(224, 170, 78, 0.65); }

.breadcrumbs__current { color: var(--gold); font-weight: 700; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-block-end: clamp(16px, 2vw, 28px);
  border-block-end: 1px solid var(--gold-line);
}

.tabs__tab {
  position: relative;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-block-end: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color 180ms var(--bezier), background-color 180ms var(--bezier);
}

.tabs__tab:hover { color: var(--paper); background: var(--gold-ghost); }

.tabs__tab[aria-selected="true"] {
  color: var(--paper);
  background: rgba(124, 35, 56, 0.35);
  border-color: var(--gold-line);
}

.tabs__tab[aria-selected="true"]::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: -1px;
  height: 2px;
  background: var(--gold);
}

.tabs__panel { animation: tab-in 200ms var(--bezier) both; }
.tabs__panel[hidden] { display: none; }

@keyframes tab-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 8. Media frame ---------- */
.media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background-image:
    linear-gradient(135deg, rgba(59, 26, 77, 0.92), rgba(20, 16, 26, 0.98));
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(224, 170, 78, 0.16) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(224, 170, 78, 0.08) 0 1px, transparent 1px 48px);
}

.media-frame__caption {
  position: absolute;
  inset-inline: 12px;
  inset-block-end: 12px;
  z-index: 2;
  padding: 6px 10px;
  background: rgba(20, 16, 26, 0.78);
  border-inline-start: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.media-frame__tag {
  position: absolute;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  z-index: 2;
}

/* ---------- 9. Responsive ---------- */
@media (min-width: 560px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .split { grid-template-columns: minmax(0, 36fr) minmax(0, 64fr); }

  .split__aside {
    padding-inline-end: clamp(16px, 2.4vw, 32px);
    border-inline-end: 1px solid var(--gold-line);
  }

  .footer-grid { grid-template-columns: 1.1fr 0.9fr 0.9fr 1.5fr; }
}

@media (max-width: 1023px) {
  .header-plate { display: none; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .header-cta { display: none; }

  .primary-nav {
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    margin-inline-start: 0;
    padding-inline: clamp(16px, 4vw, 48px);
    background: rgba(59, 26, 77, 0.99);
    border-block-end: 1px solid var(--gold-line);
    transition: max-height 280ms var(--bezier),
                opacity 200ms var(--bezier),
                padding-block 200ms var(--bezier),
                visibility 0s linear 280ms;
  }

  .primary-nav[data-open="true"] {
    max-height: 74vh;
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
    padding-block: 8px 20px;
    transition: max-height 320ms var(--bezier),
                opacity 220ms var(--bezier),
                padding-block 200ms var(--bezier),
                visibility 0s linear 0s;
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }

  .nav-list__link {
    display: flex;
    padding: 14px 12px;
    font-size: var(--fs-16);
    border-radius: var(--radius);
  }

  .nav-list__link::after { display: none; }

  .nav-list__link[aria-current="page"] { background: rgba(124, 35, 56, 0.55); }
}

@media (max-width: 560px) {
  .brand__tagline { display: none; }
  .brand__mark { font-size: 1.1rem; }
  .tabs__tab { padding: 10px 12px; font-size: var(--fs-12); }
}

/* ---------- 10. Motion preferences ---------- */
@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: 0s !important;
  }

  .skip-link { transform: none; }
  .header-progress__bar { transition: none; }
}