/* ============================================================
   博喜体育站 · CN PLUS —— 共享样式 /assets/site.css
   高原赛事控制台：深青命令栏 + 雪峰白长读区 + 信号橙引导
   ============================================================ */

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

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

body,
h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

ul, ol {
  padding: 0;
}

ul[class], ol[class] {
  list-style: none;
}

img, svg, video {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: inherit;
}

table {
  border-collapse: collapse;
  width: 100%;
}

[hidden] {
  display: none !important;
}

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --c-deep: #07343D;
  --c-teal: #0B4F5C;
  --c-teal-bright: #147A8A;
  --c-snow: #F7FAFA;
  --c-rime: #DCE7E7;
  --c-ink: #142428;
  --c-orange: #FF6A2B;
  --c-orange-deep: #B33C0A;
  --c-pulse: #2EE6A8;
  --c-pulse-deep: #0F7A5A;
  --c-ice: #B9D9DF;
  --c-white: #FFFFFF;

  /* 字体栈 */
  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-data: "JetBrains Mono", "IBM Plex Mono", SFMono-Regular, Consolas, "Courier New", monospace;

  /* 形状 */
  --r-sm: 12px;
  --r-md: 20px;
  --r-lg: 28px;
  --r-xl: 40px;
  --r-pill: 999px;

  /* 尺寸与节奏 */
  --maxw: 1240px;
  --gutter: clamp(1.15rem, 4vw, 2.6rem);
  --speed: 180ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--c-ink);
  background-color: var(--c-snow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

p { margin-bottom: 0; }

strong, b { font-weight: 700; }

::selection {
  background: rgba(255, 106, 43, 0.28);
  color: var(--c-deep);
}

/* ---------- 4. 焦点与无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 3px;
  border-radius: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.7rem;
  left: 0.7rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.15rem;
  border-radius: var(--r-pill);
  background: var(--c-orange);
  color: #06222A;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform var(--speed) var(--ease);
}

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

/* ---------- 5. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(2.6rem, 6vw, 4.6rem);
}

.section--tight {
  padding-block: clamp(1.6rem, 4vw, 2.6rem);
}

.section--deep {
  background-color: var(--c-deep);
  color: var(--c-snow);
}

.section--panel {
  background-color: var(--c-white);
  border-block: 1px solid var(--c-rime);
}

.section--rime {
  background-color: var(--c-rime);
  color: var(--c-ink);
}

.divider {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--c-rime);
}

.section--deep .divider {
  background: rgba(185, 217, 223, 0.22);
}

/* ---------- 6. 字体层级 ---------- */
.display-xl,
.display-l,
.display-m,
.heading-l,
.heading-m {
  font-family: var(--font-display);
  color: inherit;
  letter-spacing: 0.005em;
  text-wrap: balance;
}

.display-xl {
  font-size: clamp(2.6rem, 6.4vw, 4rem);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.012em;
}

.display-l {
  font-size: clamp(1.95rem, 4.4vw, 3rem);
  line-height: 1;
  font-weight: 800;
}

.display-m {
  font-size: clamp(1.55rem, 3.4vw, 2.25rem);
  line-height: 1.05;
  font-weight: 700;
}

.heading-l {
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  line-height: 1.15;
  font-weight: 700;
}

.heading-m {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  line-height: 1.25;
  font-weight: 700;
}

.mono {
  font-family: var(--font-data);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.anno {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-orange-deep);
}

.section--deep .anno {
  color: var(--c-orange);
}

.anno--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  letter-spacing: 0.32em;
  color: var(--c-teal-bright);
}

.section--deep .anno--vertical {
  color: var(--c-ice);
}

.prose {
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: inherit;
}

.prose p,
.prose ul,
.prose ol {
  margin-bottom: 1.1em;
}

.prose ul,
.prose ol {
  padding-left: 1.3em;
  list-style: revert;
}

.prose > :last-child {
  margin-bottom: 0;
}

.prose a {
  color: var(--c-teal-bright);
  text-underline-offset: 3px;
}

.section--deep .prose a {
  color: var(--c-pulse);
}

/* ---------- 7. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.7rem);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.64rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--speed) var(--ease),
              border-color var(--speed) var(--ease),
              color var(--speed) var(--ease),
              transform var(--speed) var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background-color: var(--c-orange);
  border-color: var(--c-orange);
  color: #06222A;
}

.btn-primary:hover {
  background-color: #FF8149;
  border-color: #FF8149;
}

.btn-ghost {
  background-color: transparent;
  border-color: rgba(185, 217, 223, 0.42);
  color: var(--c-snow);
}

.btn-ghost:hover {
  border-color: var(--c-orange);
  color: var(--c-white);
}

.section--panel .btn-ghost,
.section--rime .btn-ghost {
  border-color: var(--c-rime);
  color: var(--c-teal);
}

.section--panel .btn-ghost:hover,
.section--rime .btn-ghost:hover {
  border-color: var(--c-orange-deep);
  color: var(--c-orange-deep);
}

.btn-sm {
  padding: 0.46rem 0.92rem;
  font-size: 13px;
}

/* ---------- 9. 页头 · 紧凑命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--c-deep);
  color: var(--c-snow);
  border-bottom: 1px solid rgba(185, 217, 223, 0.22);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1.6vw, 1.3rem);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0.7rem var(--gutter);
  min-height: 64px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex: 0 0 auto;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: var(--r-pill);
  background-color: var(--c-orange);
  color: #06222A;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.brand-line {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.015em;
  color: var(--c-white);
}

.brand-sub {
  font-family: var(--font-data);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-ice);
}

/* 导航 */
.nav {
  display: flex;
  align-items: center;
  margin-left: auto;
  padding-left: clamp(0.5rem, 2vw, 1.4rem);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.12rem;
  list-style: none;
}

.nav-item {
  display: flex;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.36rem;
  padding: 0.46rem 0.62rem;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--c-ice);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--speed) var(--ease),
              background-color var(--speed) var(--ease),
              box-shadow var(--speed) var(--ease);
}

.nav-index {
  font-family: var(--font-data);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(185, 217, 223, 0.62);
  transition: color var(--speed) var(--ease);
}

.nav-link:hover {
  color: var(--c-white);
  background-color: rgba(185, 217, 223, 0.1);
}

.nav-link:hover .nav-index {
  color: var(--c-orange);
}

.nav-link[aria-current="page"] {
  color: var(--c-white);
  background-color: rgba(255, 106, 43, 0.14);
  box-shadow: inset 0 0 0 1px var(--c-orange);
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--c-orange);
}

.nav-foot {
  display: none;
}

/* 头部操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
  margin-left: 0.4rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.34rem 0.72rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(185, 217, 223, 0.28);
  background-color: rgba(185, 217, 223, 0.1);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--c-ice);
  white-space: nowrap;
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-color: var(--c-orange);
}

.status-value {
  font-weight: 600;
  color: var(--c-white);
}

.status-badge[data-state="updated"] .status-dot {
  background-color: var(--c-pulse);
  animation: status-pulse 2s ease-in-out infinite;
}

.status-badge[data-state="updated"] .status-value {
  color: var(--c-pulse);
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.8); }
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  padding: 0.44rem 0.75rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(185, 217, 223, 0.35);
  background-color: transparent;
  color: var(--c-snow);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  transition: border-color var(--speed) var(--ease), color var(--speed) var(--ease);
}

.nav-toggle:hover {
  border-color: var(--c-orange);
}

.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 16px;
}

.nav-toggle-bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform var(--speed) var(--ease), opacity var(--speed) var(--ease);
}

.site-header[data-open] .nav-toggle-bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.site-header[data-open] .nav-toggle-bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* 阅读进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background-color: transparent;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-orange), var(--c-pulse));
  transition: width 90ms linear;
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  background-color: var(--c-deep);
  color: var(--c-ice);
  padding-block: clamp(2.4rem, 5.5vw, 4rem) 1.6rem;
}

.footer-inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(1.8rem, 4.5vw, 3.4rem);
  padding-bottom: clamp(1.6rem, 3.5vw, 2.4rem);
  border-bottom: 1px solid rgba(185, 217, 223, 0.2);
}

.footer-brand .brand-mark {
  background-color: var(--c-orange);
}

.footer-blurb {
  margin-top: 1.05rem;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-ice);
}

.footer-contact {
  display: grid;
  gap: 0.32rem;
  margin-top: 1.2rem;
}

.footer-contact-note {
  max-width: 36ch;
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(185, 217, 223, 0.82);
}

.footer-contact-item {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.footer-address {
  font-size: 13px;
  font-style: normal;
  color: rgba(185, 217, 223, 0.9);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.1rem, 2.6vw, 2rem);
  align-content: start;
}

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

.footer-col-title {
  margin-bottom: 0.85rem;
  font-family: var(--font-data);
  font-size: 10.5px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-orange);
}

.footer-links {
  display: grid;
  gap: 0.5rem;
  list-style: none;
}

.footer-links a {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--c-snow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.footer-links a:hover {
  color: var(--c-white);
  border-bottom-color: var(--c-orange);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.6rem;
  padding-top: 1.35rem;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(185, 217, 223, 0.85);
}

.footer-legal a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 217, 223, 0.4);
}

.footer-legal a:hover {
  border-bottom-color: var(--c-orange);
  color: var(--c-white);
}

.footer-meta {
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: rgba(185, 217, 223, 0.72);
}

/* ---------- 11. 通用内容组件 ---------- */
.card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: clamp(1.1rem, 2.4vw, 1.65rem);
  background-color: var(--c-white);
  border: 1px solid var(--c-rime);
  border-radius: var(--r-lg);
}

.card-title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-teal);
}

.card-text {
  font-size: 15px;
  line-height: 1.72;
  color: #35505A;
}

.section--deep .card {
  background-color: rgba(247, 250, 250, 0.06);
  border-color: rgba(185, 217, 223, 0.24);
}

.section--deep .card-title { color: var(--c-snow); }
.section--deep .card-text { color: var(--c-ice); }

/* 筛选胶囊 */
.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-rime);
  background-color: var(--c-white);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-teal);
  cursor: pointer;
  transition: background-color var(--speed) var(--ease),
              border-color var(--speed) var(--ease),
              color var(--speed) var(--ease);
}

.pill:hover {
  border-color: var(--c-teal-bright);
}

.pill[aria-pressed="true"],
.pill.is-active {
  background-color: var(--c-deep);
  border-color: var(--c-deep);
  color: var(--c-snow);
}

/* 标签页 */
.tabs {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--c-rime);
}

.tab-btn {
  padding: 0.46rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  background-color: transparent;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-teal);
  cursor: pointer;
  transition: background-color var(--speed) var(--ease),
              border-color var(--speed) var(--ease),
              color var(--speed) var(--ease);
}

.tab-btn:hover {
  background-color: rgba(20, 122, 138, 0.1);
}

.tab-btn[aria-selected="true"] {
  background-color: rgba(255, 106, 43, 0.12);
  border-color: var(--c-orange);
  color: var(--c-orange-deep);
}

.tab-panel {
  font-size: 15.5px;
  line-height: 1.75;
  transition: opacity var(--speed) var(--ease);
}

/* 折叠面板骨架 */
.accordion {
  display: grid;
  gap: 0.6rem;
}

.accordion-item {
  background-color: var(--c-white);
  border: 1px solid var(--c-rime);
  border-radius: var(--r-md);
  overflow: hidden;
}

.accordion-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.1rem;
  text-align: left;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-teal);
  cursor: pointer;
}

.accordion-btn[aria-expanded="true"] {
  color: var(--c-orange-deep);
}

.accordion-panel {
  padding: 0 1.1rem 1.1rem;
  font-size: 15px;
  line-height: 1.75;
  color: #35505A;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding-block: 1rem;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--c-teal-bright);
  list-style: none;
}

.breadcrumb a {
  text-decoration: none;
  color: inherit;
  transition: color var(--speed) var(--ease);
}

.breadcrumb a:hover {
  color: var(--c-orange-deep);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--c-rime);
}

/* ---------- 12. 图片容器基础规则 ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-rime);
  aspect-ratio: 16 / 9;
  background-color: var(--c-deep);
  background-image: linear-gradient(135deg, rgba(20, 122, 138, 0.85) 0%, rgba(7, 52, 61, 0.98) 62%, rgba(11, 79, 92, 0.95) 100%);
  isolation: isolate;
}

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

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

.img-frame--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(185, 217, 223, 0.22) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(185, 217, 223, 0.14) 0 1px, transparent 1px 64px);
  opacity: 0.75;
}

.img-frame-label {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 0.5rem 0.9rem;
  border-top-right-radius: var(--r-sm);
  background-color: rgba(7, 52, 61, 0.86);
  color: var(--c-snow);
  font-family: var(--font-data);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.4;
}

/* ---------- 13. 响应式 · 平板 ---------- */
@media (max-width: 1080px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    margin-left: 0;
    padding: 0 var(--gutter);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background-color: var(--c-deep);
    border-bottom: 1px solid rgba(185, 217, 223, 0.22);
    box-shadow: 0 18px 32px rgba(7, 52, 61, 0.35);
    transition: max-height 240ms var(--ease),
                padding 240ms var(--ease),
                visibility 240ms var(--ease);
  }

  .site-header[data-open] .nav {
    max-height: calc(100vh - 66px);
    overflow-y: auto;
    padding: 0.6rem var(--gutter) 1.1rem;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.16rem;
    width: 100%;
  }

  .nav-item {
    display: block;
  }

  .nav-link {
    justify-content: flex-start;
    width: 100%;
    padding: 0.76rem 0.85rem;
    border-radius: var(--r-md);
    font-size: 15px;
  }

  .nav-foot {
    display: flex;
    margin-top: 0.7rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgba(185, 217, 223, 0.18);
  }

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

/* ---------- 14. 响应式 · 手机 ---------- */
@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .status-label {
    display: none;
  }

  .btn-header {
    display: none;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

@media (max-width: 620px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .header-inner {
    gap: 0.5rem;
    padding-block: 0.6rem;
  }

  .brand-sub {
    display: none;
  }

  .status-badge {
    padding: 0.3rem 0.6rem;
    font-size: 10.5px;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.4rem;
  }
}

@media (max-width: 400px) {
  .brand-line {
    font-size: 15px;
  }

  .nav-toggle-label {
    display: none;
  }
}

/* ---------- 15. 动效降级 ---------- */
@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;
  }

  .status-badge .status-dot {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress-bar {
    transition: none !important;
  }
}