/* ============================================================
   欧宝赛场 · 共享站点样式 /assets/site.css
   夜场转播室 × 赛事指挥台：蓝图网格 + 斜向赛道切割 + 珠宝色分区
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  --ink-900: #0B2B24;
  --ink-800: #123B31;
  --ink-700: #16453A;
  --lime: #C6FF3D;
  --lime-soft: #E8F5C8;
  --yellow: #FFD43B;
  --red: #E5484D;
  --paper: #F6F2E8;
  --char: #2A2F2C;
  --mist: #8FB8A8;
  --indigo: #1F3A5F;

  --line: rgba(143, 184, 168, 0.28);
  --line-strong: rgba(143, 184, 168, 0.5);
  --line-lime: rgba(198, 255, 61, 0.42);
  --paper-85: rgba(246, 242, 232, 0.85);
  --paper-70: rgba(246, 242, 232, 0.7);
  --paper-55: rgba(246, 242, 232, 0.55);

  --font-display: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", SFMono-Regular, Consolas, "Courier New", monospace;

  --container: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --hdr-h: 78px;
  --radius: 2px;
  --shadow-hard: 8px 8px 0 rgba(0, 0, 0, 0.38);
  --shadow-lime: 6px 6px 0 rgba(198, 255, 61, 0.28);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --cut: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 30px) 100%, 0 100%);
}

/* ---------- 2. 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(--hdr-h) + 16px);
}

body {
  margin: 0;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }
a { color: inherit; }
hr { border: 0; border-top: 1px solid var(--line); }
::selection { background: var(--lime); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 1px;
}
.site-footer :focus-visible { outline-color: var(--yellow); }

/* ---------- 3. 基础排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: 0.005em;
  color: var(--paper);
  text-wrap: balance;
}
h1 { font-size: clamp(2.8rem, 6vw, 6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.8rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.55rem); letter-spacing: 0.01em; }
h4 { font-size: clamp(1rem, 1.4vw, 1.15rem); }

p { text-wrap: pretty; }

.lead {
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.7;
  color: var(--paper-85);
  max-width: 62ch;
}

.prose {
  max-width: 72ch;
  color: var(--paper-85);
  font-size: 1.02rem;
  line-height: 1.8;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2.2em; font-size: clamp(1.4rem, 2.4vw, 2rem); }
.prose h3 { margin-top: 1.8em; }
.prose strong { color: var(--paper); font-weight: 700; }
.prose a { color: var(--lime); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.45em; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--lime);
}

/* ---------- 4. 布局容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(44px, 6vw, 88px); }
.section + .section { border-top: 1px solid var(--line); }

.hero {
  position: relative;
  padding-top: calc(var(--hdr-h) + clamp(28px, 6vw, 72px));
  padding-bottom: clamp(44px, 7vw, 96px);
  overflow: hidden;
}

.page-head {
  padding-top: calc(var(--hdr-h) + clamp(24px, 4.5vw, 56px));
  padding-bottom: clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: clamp(20px, 3vw, 36px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 0.8rem;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--lime);
}
.section-title { max-width: 22ch; }
.section-sub {
  max-width: 46ch;
  color: var(--paper-70);
  font-size: 0.98rem;
  line-height: 1.75;
}

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 258px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 198px), 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.bp-grid {
  background-image:
    linear-gradient(rgba(143, 184, 168, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 184, 168, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ---------- 5. 通用组件 ---------- */
.panel {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--shadow-hard);
  color: var(--paper-85);
}
.panel--cut { clip-path: var(--cut); padding-bottom: calc(clamp(18px, 2.4vw, 28px) + 12px); }
.panel h3 { color: var(--paper); margin-bottom: 0.5rem; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 59, 49, 0.72);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag--lime { background: var(--lime); border-color: var(--lime); color: var(--ink-900); }
.tag--yellow { background: var(--yellow); border-color: var(--yellow); color: var(--ink-900); }
.tag--red { background: var(--red); border-color: var(--red); color: var(--paper); }
.tag--indigo { background: var(--indigo); border-color: rgba(198, 255, 61, 0.35); color: var(--paper); }
.tag--outline { background: transparent; border-color: var(--line-lime); color: var(--lime); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.82rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
    color 0.18s var(--ease), box-shadow 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-900);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
}
.btn--primary:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 rgba(0, 0, 0, 0.5); }
.btn--ghost {
  border-color: var(--line-lime);
  color: var(--lime);
  background: rgba(198, 255, 61, 0.04);
}
.btn--ghost:hover { background: rgba(198, 255, 61, 0.14); transform: translate(-2px, -2px); }
.btn--ink {
  background: var(--char);
  border-color: var(--char);
  color: var(--paper);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.35);
}
.btn--ink:hover { background: var(--ink-700); }
.btn__mark {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  opacity: 0.75;
}

.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 0.5rem; }
.breadcrumbs__link {
  color: var(--paper-70);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.breadcrumbs__link:hover { color: var(--lime); border-bottom-color: var(--line-lime); }
.breadcrumbs__sep { color: rgba(143, 184, 168, 0.55); }
.breadcrumbs__item[aria-current="page"] { color: var(--lime); }

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line-lime);
  border-radius: var(--radius);
  background: var(--ink-800);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.media-frame:hover img { transform: scale(1.02); }
.media-frame__caption {
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  padding: 0.55rem 0.8rem;
  background: rgba(11, 43, 36, 0.86);
  border-top: 1px solid var(--line);
  color: var(--paper-85);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--cut { clip-path: var(--cut); }
.media-frame--placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 184, 168, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 184, 168, 0.14) 1px, transparent 1px),
    linear-gradient(135deg, rgba(31, 58, 95, 0.55), rgba(18, 59, 49, 0.9));
  background-size: 32px 32px, 32px 32px, 100% 100%;
}
.media-frame--placeholder::after {
  content: "IMAGE";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: rgba(143, 184, 168, 0.65);
}

.chapter {
  position: relative;
  padding-left: clamp(14px, 2vw, 26px);
  border-left: 2px solid rgba(143, 184, 168, 0.25);
  transition: border-color 0.25s var(--ease);
}
.chapter.is-current { border-left-color: var(--lime); }
.chapter__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 0.35rem;
  transition: color 0.25s var(--ease);
}
.chapter.is-current .chapter__index { color: var(--lime); }

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 6. 头部 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 0.7rem 1.05rem;
  background: var(--lime);
  color: var(--ink-900);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 90;
  color: var(--paper);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}
.site-header[data-state="overlay"] {
  background: linear-gradient(
    180deg,
    rgba(11, 43, 36, 0.94) 0%,
    rgba(11, 43, 36, 0.6) 58%,
    rgba(11, 43, 36, 0) 100%
  );
  border-bottom-color: rgba(143, 184, 168, 0.16);
}
.site-header[data-state="solid"] {
  background: var(--ink-900);
  border-bottom-color: var(--line-lime);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.38);
}
.site-header[data-open="true"] {
  background: var(--ink-900);
  border-bottom-color: var(--line-lime);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  height: var(--hdr-h);
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--paper);
}
.brand__mark {
  display: grid;
  align-content: center;
  gap: 4px;
  width: 38px;
  height: 38px;
  padding-inline: 7px;
  border: 1px solid var(--line-lime);
  border-radius: var(--radius);
  background: rgba(198, 255, 61, 0.09);
  transform: skewX(-8deg);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.brand__mark-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--lime);
}
.brand__mark-line--alt {
  width: 62%;
  margin-left: auto;
  background: var(--yellow);
}
.brand:hover .brand__mark { background: rgba(198, 255, 61, 0.2); border-color: var(--lime); }
.brand__text { display: block; }
.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  line-height: 1;
  color: var(--paper);
}
.brand__tagline {
  display: block;
  margin-top: 0.32rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--mist);
}

.site-nav { display: flex; align-items: center; margin-inline-start: auto; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1vw, 14px);
  list-style: none;
  counter-reset: nav;
}
.site-nav__item { counter-increment: nav; }
.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45em;
  padding: 0.55rem 0.4rem 0.65rem;
  color: var(--paper-85);
  font-size: 0.94rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease);
}
.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0;
  color: rgba(143, 184, 168, 0.75);
  transition: color 0.18s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 0.28rem;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}
.site-nav__link:hover { color: var(--lime); }
.site-nav__link:hover::before { color: var(--lime); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--lime); font-weight: 700; }
.site-nav__link[aria-current="page"]::before { color: var(--lime); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__foot { display: none; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-inline-start: 6px;
  flex: 0 0 auto;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.4rem 0.68rem;
  border: 1px solid var(--line-lime);
  border-radius: var(--radius);
  background: rgba(11, 43, 36, 0.6);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    transform 0.18s var(--ease);
}
.status-badge:hover { transform: translateY(-1px); background: rgba(198, 255, 61, 0.12); }
.status-badge__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.12);
}
.status-badge--ok { color: var(--lime); border-color: rgba(198, 255, 61, 0.55); }
.status-badge--warn { color: var(--yellow); border-color: rgba(255, 212, 59, 0.55); }
.status-badge--alert { color: var(--red); border-color: rgba(229, 72, 77, 0.6); }
.status-badge__text { display: inline; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.48rem 0.7rem;
  border: 1px solid var(--line-lime);
  border-radius: var(--radius);
  background: rgba(11, 43, 36, 0.55);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.18s var(--ease);
}
.nav-toggle:hover { background: rgba(198, 255, 61, 0.14); }
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 14px;
}
.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle__label { display: inline-block; line-height: 1; }

.read-progress {
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 3px;
  background: rgba(143, 184, 168, 0.16);
  overflow: hidden;
}
.read-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--lime), var(--yellow));
  transition: width 0.1s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(32px, 5vw, 72px);
  padding-top: clamp(40px, 5.5vw, 72px);
  background: var(--ink-900);
  border-top: 2px solid var(--line-lime);
  color: var(--paper-85);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 184, 168, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 184, 168, 0.1) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.footer-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 48px);
  padding-bottom: clamp(28px, 4vw, 48px);
}
.footer-brand__name {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--paper);
}
.footer-brand__line {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.2rem 0.5rem;
  background: var(--lime);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transform: skewX(-8deg);
}
.footer-brand__summary {
  margin-top: 1rem;
  max-width: 36ch;
  color: var(--paper-70);
  font-size: 0.94rem;
  line-height: 1.75;
}
.footer-brand__coords {
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: rgba(143, 184, 168, 0.8);
}
.footer-col__title {
  padding-bottom: 0.6rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}
.footer-list {
  display: grid;
  gap: 0.55rem;
  list-style: none;
}
.footer-link {
  position: relative;
  display: inline-block;
  padding-left: 0.95rem;
  color: var(--paper-85);
  font-size: 0.94rem;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.footer-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 1px;
  background: var(--mist);
  transition: width 0.18s var(--ease), background-color 0.18s var(--ease);
}
.footer-link:hover { color: var(--lime); }
.footer-link:hover::before { width: 12px; background: var(--lime); }

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
  padding-block: clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}
.footer-contact__cell { min-width: 0; }
.footer-contact__label {
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.footer-contact__value {
  color: var(--paper);
  font-size: 0.96rem;
  line-height: 1.7;
  word-break: break-word;
}
.footer-contact__note {
  grid-column: 1 / -1;
  padding-left: 0.9rem;
  border-left: 3px solid var(--yellow);
  color: var(--paper-70);
  font-size: 0.84rem;
  line-height: 1.7;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.6rem;
  padding-block: 1.15rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.footer-legal { margin: 0; color: rgba(143, 184, 168, 0.9); }
.footer-meta { display: flex; align-items: center; gap: 1rem; }
.footer-meta__item {
  color: rgba(143, 184, 168, 0.75);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--line-lime);
  border-radius: var(--radius);
  background: transparent;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.to-top:hover { background: rgba(198, 255, 61, 0.14); transform: translateY(-1px); }
.to-top__icon { font-size: 0.9rem; line-height: 1; }

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1100px) {
  .site-nav__link { font-size: 0.88rem; }
  .site-nav__link::before { display: none; }
  .status-badge__text { font-size: 0.64rem; }
}

@media (max-width: 1023px) {
  :root { --hdr-h: 64px; }

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

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

  .site-nav {
    position: fixed;
    inset-block-start: var(--hdr-h);
    inset-inline: 0;
    inset-block-end: 0;
    z-index: 95;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    margin-inline-start: 0;
    padding: clamp(18px, 4vw, 32px) var(--gutter) 48px;
    background-color: var(--ink-900);
    background-image:
      linear-gradient(rgba(143, 184, 168, 0.1) 1px, transparent 1px),
      linear-gradient(90deg, rgba(143, 184, 168, 0.1) 1px, transparent 1px);
    background-size: 52px 52px;
    border-top: 1px solid var(--line-lime);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    overflow-y: auto;
    overscroll-behavior: contain;
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
  }
  .site-header[data-open="true"] .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    max-width: 560px;
    margin-inline: auto;
  }
  .site-nav__item { border-top: 1px solid rgba(143, 184, 168, 0.22); }
  .site-nav__item:last-child { border-bottom: 1px solid rgba(143, 184, 168, 0.22); }
  .site-nav__link {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    width: 100%;
    padding: 0.95rem 0.3rem;
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 5vw, 1.7rem);
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--paper);
  }
  .site-nav__link::before {
    display: inline-block;
    content: counter(nav, decimal-leading-zero);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--mist);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--lime); }
  .site-nav__link[aria-current="page"]::before { color: var(--lime); }
  .site-nav__foot {
    display: block;
    width: 100%;
    max-width: 560px;
    margin: 1.6rem auto 0;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--mist);
  }

  body.nav-open { overflow: hidden; }
}

@media (max-width: 720px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .section-head { align-items: flex-start; }
  .footer-contact { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-meta { width: 100%; justify-content: space-between; }
}

@media (max-width: 560px) {
  .status-badge { padding: 0.4rem 0.45rem; }
  .status-badge__text { display: none; }
  .status-badge__dot { width: 8px; height: 8px; }
  .brand__mark { width: 34px; height: 34px; padding-inline: 6px; }
  .brand__name { font-size: 1.12rem; }
  .brand__tagline { font-size: 0.55rem; letter-spacing: 0.16em; }
  .footer-meta__item { display: none; }
}

@media (max-width: 380px) {
  .nav-toggle__label { display: none; }
}

/* ---------- 9. 动效与可访问性 ---------- */
@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;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .media-frame:hover img { transform: none; }
}