:root {
  color-scheme: dark;
  --ink: #020307;
  --paper: #f5f7fb;
  --muted: rgba(231, 237, 247, 0.62);
  --line: rgba(226, 238, 255, 0.22);
  --cyan: #ff7a5c;
  --rose: #ffc24d;
  --journey-progress: 0;
  --journey-scale: 1.04;
  --journey-drift: -2%;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
  font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

body::selection {
  background: var(--cyan);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

img,
iframe {
  display: block;
}

/* 图片兜底尺寸：防止缓存不同步或加载时原图撑开布局 */
img {
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 4px;
  background: #fff;
  color: #000;
  transform: translateY(-160%);
}

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

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: 0 48px;
  background: linear-gradient(180deg, rgba(2, 3, 7, 0.72) 0%, rgba(2, 3, 7, 0.34) 52%, transparent 100%);
  transition: background 240ms ease, backdrop-filter 240ms ease;
}

.site-header.is-scrolled {
  background: rgba(2, 3, 7, 0.78);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.72);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 12px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 12px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.72);
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 6px;
  left: 12px;
  height: 1px;
  background: var(--cyan);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: #fff;
}

.site-nav a.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.hero {
  position: relative;
  height: 100svh;
  min-height: 720px;
  overflow: hidden;
  background: #000;
}

.hero-frame {
  position: absolute;
  top: 50%;
  left: 50%;
  width: max(100vw, 140.625svh);
  height: max(100svh, 71.112vw);
  max-width: none;
  border: 0;
  background: #000;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(1.05);
  filter: hue-rotate(135deg);
}

.material-journey {
  position: relative;
  height: 340svh;
  background: #04050a;
}

.material-stage {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 720px;
  overflow: hidden;
  isolation: isolate;
  background: #080816;
}

.journey-media,
.journey-layer,
.journey-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.journey-media {
  z-index: -1;
  overflow: hidden;
  background: #060610;
}

.journey-layer {
  object-fit: cover;
  object-position: center;
  will-change: transform, filter, opacity;
  transform: translate3d(var(--journey-drift), 0, 0) scale(var(--journey-scale));
  transition: opacity 900ms var(--ease), filter 900ms var(--ease);
}

.journey-layer-primary {
  opacity: 1;
  filter: saturate(0.9) contrast(1.08) brightness(0.74);
}

.journey-layer-secondary {
  opacity: 0;
  filter: saturate(1.15) contrast(1.05) brightness(0.78);
}

.journey-shade {
  background:
    linear-gradient(90deg, rgba(2, 3, 7, 0.76) 0%, rgba(2, 3, 7, 0.18) 46%, rgba(2, 3, 7, 0.08) 100%),
    linear-gradient(0deg, rgba(2, 3, 7, 0.58) 0%, transparent 48%, rgba(2, 3, 7, 0.24) 100%);
  transition: opacity 700ms var(--ease);
}

.journey-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 80px;
  padding: 0 48px;
  border-bottom: 1px solid var(--line);
}

.journey-header p {
  margin: 0;
  color: rgba(245, 247, 251, 0.72);
  font-family: "Courier New", monospace;
  font-size: 11px;
  text-transform: uppercase;
}

.journey-header p:first-child::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  margin: 0 12px 3px 0;
  background: var(--cyan);
}

.journey-header [data-journey-meter] {
  color: var(--paper);
}

.journey-copy {
  position: absolute;
  left: 48px;
  bottom: 148px;
  z-index: 3;
  width: min(680px, calc(100% - 210px));
  height: 340px;
  pointer-events: none;
}

.journey-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 550ms var(--ease), transform 700ms var(--ease);
}

.journey-panel.is-active {
  opacity: 1;
  transform: translateY(0);
}

.journey-panel p {
  margin: 0 0 16px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 11px;
  text-transform: uppercase;
}

.journey-panel h2 {
  margin: 0;
  font-size: 68px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 16px 42px rgba(0, 0, 0, 0.34);
}

.journey-panel > span {
  display: block;
  max-width: 520px;
  margin-top: 22px;
  color: rgba(239, 243, 250, 0.72);
  font-size: 15px;
  line-height: 1.8;
}

.journey-nav {
  position: absolute;
  top: 50%;
  right: 48px;
  z-index: 5;
  display: grid;
  width: 132px;
  transform: translateY(-50%);
}

.journey-state {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  min-height: 52px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  background: transparent;
  color: rgba(245, 247, 251, 0.48);
  cursor: pointer;
  font-size: 11px;
  text-align: left;
  text-transform: uppercase;
  transition: color 220ms ease, border-color 220ms ease;
}

.journey-state span {
  font-family: "Courier New", monospace;
  font-size: 9px;
}

.journey-state:hover,
.journey-state:focus-visible,
.journey-state.is-active {
  border-color: var(--cyan);
  color: #fff;
}

.journey-state.is-active span {
  color: var(--cyan);
}

.journey-progress {
  position: absolute;
  right: 48px;
  bottom: 48px;
  left: 48px;
  z-index: 4;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.22);
}

.journey-progress span {
  display: block;
  width: calc(var(--journey-progress) * 100%);
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), #ffffff 48%, var(--rose));
  box-shadow: 0 0 18px rgba(255, 122, 92, 0.7);
}

.journey-hint {
  position: absolute;
  right: 48px;
  bottom: 60px;
  z-index: 4;
  margin: 0;
  color: rgba(245, 247, 251, 0.52);
  font-family: "Courier New", monospace;
  font-size: 9px;
  text-transform: uppercase;
}

[data-active-state="material"] .journey-layer-primary {
  opacity: 0.52;
  filter: saturate(0.8) contrast(1.12) brightness(0.62);
}

[data-active-state="material"] .journey-layer-secondary {
  opacity: 0.72;
  filter: saturate(1.24) contrast(1.08) brightness(0.82);
}

[data-active-state="material"] .journey-shade {
  opacity: 0.84;
}

[data-active-state="refraction"] .journey-layer-primary {
  opacity: 0.12;
}

[data-active-state="refraction"] .journey-layer-secondary {
  opacity: 1;
  filter: saturate(1.12) contrast(1.12) brightness(0.68) hue-rotate(8deg);
}

[data-active-state="refraction"] .journey-shade {
  opacity: 0.68;
}

.journey-cta {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 88svh;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.journey-cta > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 56%;
  filter: saturate(0.96) contrast(1.08) brightness(0.46);
  transform: scale(1.08);
}

.journey-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(2, 3, 7, 0.92), rgba(2, 3, 7, 0.16) 68%);
}

.journey-cta-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 28px 48px;
  width: min(calc(100% - 96px), 1440px);
  margin: 0 auto;
  padding: 0 0 72px;
}

.journey-cta-content p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 11px;
  text-transform: uppercase;
}

.journey-cta-content h2 {
  margin: 0;
  max-width: 920px;
  font-size: 58px;
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0;
}

.journey-cta-content a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  min-height: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  font-size: 13px;
  transition: border-color 180ms ease, color 180ms ease;
}

.journey-cta-content a::after {
  content: "↗";
  margin-left: 14px;
}

.journey-cta-content a:hover,
.journey-cta-content a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.site-footer {
  padding: 56px 48px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: #05060c;
  color: var(--muted);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px 48px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-word {
  display: block;
  margin-bottom: 12px;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-brand p {
  margin: 0;
  max-width: 440px;
  font-size: 13px;
  line-height: 1.8;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--muted);
  font-size: 13px;
  transition: color 160ms ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--cyan);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(245, 247, 251, 0.42);
  font-family: "Courier New", monospace;
  font-size: 11px;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.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;
}

@media (max-width: 960px) {
  .journey-panel h2 {
    font-size: 54px;
  }

  .journey-copy {
    width: min(600px, calc(100% - 190px));
  }

  .journey-cta-content h2 {
    font-size: 48px;
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 62px;
    padding: 0 16px;
  }

  .site-brand {
    font-size: 11px;
  }

  .site-nav {
    gap: 0;
  }

  .hero {
    height: 71.112vw;
    min-height: 0;
  }

  .hero-frame {
    width: 100%;
    height: 100%;
    max-width: 100%;
    transform: translate(-50%, -50%);
  }

  .material-journey {
    height: 320svh;
  }

  .material-stage {
    min-height: 680px;
  }

  .journey-layer {
    object-position: 52% center;
  }

  .journey-header {
    min-height: 64px;
    padding: 0 20px;
  }

  .journey-header p:first-child::before {
    width: 20px;
    margin-right: 8px;
  }

  .journey-nav {
    top: 78px;
    right: 20px;
    left: 20px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: auto;
    transform: none;
  }

  .journey-state {
    grid-template-columns: 22px 1fr;
    min-height: 44px;
    font-size: 9px;
  }

  .journey-copy {
    right: 20px;
    bottom: 104px;
    left: 20px;
    width: auto;
    height: 300px;
  }

  .journey-panel h2 {
    font-size: 42px;
    line-height: 1.1;
  }

  .journey-panel > span {
    max-width: 92%;
    margin-top: 18px;
    font-size: 13px;
    line-height: 1.7;
  }

  .journey-progress {
    right: 20px;
    bottom: 30px;
    left: 20px;
  }

  .journey-hint {
    right: 20px;
    bottom: 40px;
  }

  .journey-cta {
    min-height: 82svh;
  }

  .journey-cta > img {
    object-position: 52% center;
  }

  .journey-cta-content {
    display: block;
    width: calc(100% - 40px);
    padding-bottom: 44px;
  }

  .journey-cta-content h2 {
    margin-top: 14px;
    font-size: 39px;
    line-height: 1.14;
  }

  .journey-cta-content a {
    min-height: 52px;
    margin-top: 32px;
  }

  .site-footer {
    display: grid;
    padding: 24px 20px 30px;
  }
}

@media (max-height: 760px) and (min-width: 721px) {
  .hero,
  .material-stage {
    min-height: 640px;
  }

  .journey-copy {
    bottom: 96px;
    height: 280px;
  }

  .journey-panel h2 {
    font-size: 52px;
  }

  .journey-panel > span {
    margin-top: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

/* ============ 导航：链接、下拉、CTA、汉堡 ============ */
.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
}

.nav-dropdown-toggle {
  min-height: 44px;
  padding: 0 12px;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.72);
  cursor: pointer;
}

.nav-dropdown-toggle::after {
  content: " ▾";
  color: var(--cyan);
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  display: none;
  grid-template-columns: repeat(3, minmax(148px, 1fr));
  gap: 4px 28px;
  min-width: 520px;
  margin-top: 6px;
  padding: 22px 26px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(6, 8, 16, 0.96);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.55);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  display: grid;
}

.nav-dropdown-title {
  margin: 0 0 6px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-dropdown-col a {
  display: block;
  min-height: 34px;
  padding: 6px 0;
  color: rgba(231, 237, 247, 0.72);
  font-size: 13px;
  line-height: 1.4;
}

.nav-dropdown-col a:hover,
.nav-dropdown-col a:focus-visible {
  color: #fff;
}

.nav-dropdown-menu a::after {
  content: none;
}

.nav-dropdown-all {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--cyan);
  font-size: 13px;
}

.site-nav .nav-cta {
  min-height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(118deg, var(--cyan), var(--rose));
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  text-shadow: none;
}

.site-nav .nav-cta::after {
  display: none;
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: #05070d;
  filter: brightness(1.08);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(6, 8, 16, 0.5);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #fff;
  transition: transform 200ms ease, opacity 200ms ease;
}

.site-header.is-menu-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header.is-menu-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-menu-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 内页头部：实底、随内容滚动固定顶部 */
.site-header--page {
  position: sticky;
  background: rgba(4, 6, 12, 0.92);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  border-bottom: 1px solid var(--line);
}

/* ============ 邀请码行 + 注册按钮（可复用） ============ */
.code-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 18px 0 14px;
}

.code-label {
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.code-value {
  padding: 7px 14px;
  border: 1px dashed rgba(255, 122, 92, 0.55);
  border-radius: 8px;
  background: rgba(255, 122, 92, 0.08);
  color: #eafcff;
  font-family: "Courier New", monospace;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.code-copy {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--paper);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease;
}

.code-copy:hover,
.code-copy:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.code-copy.is-copied {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-register {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 26px;
  border-radius: 12px;
  background: linear-gradient(118deg, var(--cyan), var(--rose));
  color: #05070d;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 14px 34px rgba(255, 122, 92, 0.2);
  transition: filter 160ms ease, transform 160ms ease;
}

.btn-register:hover,
.btn-register:focus-visible {
  filter: brightness(1.07);
  transform: translateY(-1px);
}

.btn-register--lg {
  min-height: 56px;
  padding: 0 40px;
  font-size: 16px;
}

.star {
  color: var(--rose);
}

/* ============ 首屏：锚定到场景胶囊的覆盖层 ============ */
.hero-block {
  position: relative;
}

/* 锚定容器：与 hero 同框，JS 用 getBoundingClientRect 把胶囊/字带真实像素写进变量；
   下面是无脚本兜底（按 iframe 取景公式估算，脚本会以真实盒子覆盖）。 */
.hero-anchor {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  --bw: calc(1.05 * max(100vw, 140.625svh));
  --bh: calc(1.05 * max(100svh, 71.112vw));
  --bx: calc((100vw - var(--bw)) / 2);
  --by: calc((max(100svh, 720px) - var(--bh)) / 2);
  --fy: calc(var(--by) + 0.5435 * var(--bh));
  --fw: calc(0.575 * var(--bw));
  --fh: calc(0.277 * var(--bh));
  --tx: calc(var(--bx) + 0.54165 * var(--bw));
  --ty: calc(var(--by) + 0.54745 * var(--bh));
  --tw: calc(0.3583 * var(--bw));
  --th: calc(0.0623 * var(--bh));
}

/* 抹字层：把场景里烘死的白字糊成胶囊内一片柔光 */
/* 文字层：居中于胶囊内腔，字号随胶囊高度走 */
.hero-copy {
  position: absolute;
  left: 50%;
  top: min(50%, 50svh);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--fh) * 0.028);
  width: min(calc(var(--fw) * 0.86), 92vw);
  padding: calc(var(--fh) * 0.06) calc(var(--fw) * 0.05);
  text-align: center;
  transform: translate(-50%, -50%);
  background: rgba(245, 247, 251, 0.76);
  -webkit-backdrop-filter: blur(16px) saturate(1.05);
  backdrop-filter: blur(16px) saturate(1.05);
  border-radius: calc(var(--fh) * 0.4);
  -webkit-mask-image: radial-gradient(125% 140% at 50% 50%, #000 68%, transparent 100%);
  mask-image: radial-gradient(125% 140% at 50% 50%, #000 68%, transparent 100%);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .hero-copy {
    background: rgba(245, 247, 251, 0.93);
  }
}

.hero-copy > * {
  margin: 0;
}

.hero-kicker {
  color: rgba(2, 3, 7, 0.88);
  font-family: "Courier New", monospace;
  font-size: min(calc(var(--fh) * 0.075), 15px);
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero-title {
  color: var(--ink);
  font-size: min(calc(var(--fh) * 0.3), 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.hero-sub {
  max-width: 32ch;
  color: rgba(2, 3, 7, 0.95);
  font-size: min(calc(var(--fh) * 0.1), 20px);
  line-height: 1.5;
  text-shadow: 0 1px 10px rgba(245, 247, 251, 0.5);
}

/* 转化行：邀请码芯片 + CTA（胶囊下方 / 移动区通用） */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 2px;
}

.hero-code {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 6px 8px 6px 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: var(--ink);
}

.hero-code-label {
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(234, 252, 255, 0.72);
}

.hero-code-value {
  color: #eafcff;
  font-family: "Courier New", monospace;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.hero-code-copy {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #eafcff;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.hero-code-copy:hover,
.hero-code-copy:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.hero-code-copy.is-copied {
  border-color: var(--cyan);
  color: var(--cyan);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 30px;
  border-radius: 12px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 16px 40px rgba(255, 122, 92, 0.28);
  transition: filter 160ms ease, transform 160ms ease;
}

.hero-cta:hover,
.hero-cta:focus-visible {
  filter: brightness(1.08);
}

.hero-cta:active {
  transform: scale(0.98);
}

/* 桌面转化区：胶囊外缘下方，垫一块只罩自身的羽化暗底，保证对比度 */
.hero-convert {
  position: absolute;
  left: 50%;
  top: calc(var(--fy) + var(--fh) / 2 + max(24px, var(--fh) * 0.12));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: min(720px, 92vw);
  padding: 20px 34px 22px;
  border-radius: 26px;
  background: radial-gradient(
    120% 132% at 50% 44%,
    rgba(2, 3, 7, 0.72) 0%,
    rgba(2, 3, 7, 0.5) 50%,
    rgba(2, 3, 7, 0) 100%
  );
  -webkit-mask-image: radial-gradient(125% 140% at 50% 45%, #000 55%, transparent 100%);
  mask-image: radial-gradient(125% 140% at 50% 45%, #000 55%, transparent 100%);
  text-align: center;
  transform: translateX(-50%);
  pointer-events: auto;
}

/* 视口太矮，胶囊下方放不下：贴 hero 底部居中 */
.hero-anchor.is-convert-pinned .hero-convert {
  top: auto;
  bottom: clamp(16px, 4vh, 40px);
}

.hero-convert > * {
  margin: 0;
}

.hero-benefit {
  color: #eafcff;
  font-size: 14px;
  font-weight: 600;
}

.hero-note {
  max-width: 460px;
  color: rgba(240, 244, 250, 0.78);
  font-size: 12px;
  line-height: 1.6;
}

/* 移动端转化带：胶囊只留 H1，kicker/副标/转化行落到 hero 正下方 */
.hero-belt {
  display: none;
}

.btn-register {
  width: 100%;
}

.convert-benefit {
  margin: 14px 0 2px;
  font-size: 13px;
  color: #eafcff;
}

.convert-note {
  margin: 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
}

/* ============ journey 内的可点链接 ============ */
.journey-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
  pointer-events: auto;
}

.journey-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  transition: border-color 160ms ease, color 160ms ease;
}

.journey-links a::after {
  content: "→";
  margin-left: 8px;
  color: var(--cyan);
}

.journey-links a:hover,
.journey-links a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ============ 内容板块外壳 ============ */
.band {
  padding: 84px 48px;
  border-top: 1px solid var(--line);
  background: #05060c;
}

.featured {
  background: #04050a;
}

.band-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.band-head h2 {
  margin: 0;
  font-size: 38px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.01em;
}

.band-lead {
  max-width: 620px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ============ 精选教程 ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  margin-top: 44px;
}

.feature-group {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.feature-group-title {
  margin: 0 0 6px;
  color: #fff;
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-list a {
  display: block;
  padding: 14px 0;
}

.feature-list strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.feature-list span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.feature-list a:hover strong,
.feature-list a:focus-visible strong {
  color: var(--cyan);
}

.feature-more {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-top: 16px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ============ 工具区 ============ */
.tool-list {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
}

.tool-list li {
  border-top: 1px solid var(--line);
}

.tool-list a {
  display: block;
  padding: 18px 0;
}

.tool-list strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
}

.tool-list span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.tool-list a:hover strong,
.tool-list a:focus-visible strong {
  color: var(--cyan);
}

/* ============ 关于短条 ============ */
.about-strip {
  max-width: 780px;
}

.about-strip h2 {
  margin: 0 0 18px;
  font-size: 30px;
  font-weight: 600;
}

.about-strip p {
  margin: 0 0 14px;
  color: rgba(231, 237, 247, 0.82);
  font-size: 15px;
  line-height: 1.9;
}

.about-disc {
  font-size: 14px;
  color: var(--muted);
}

.about-disc a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============ 注册转化段 ============ */
.convert-band {
  padding: 96px 48px;
  border-top: 1px solid var(--line);
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 122, 92, 0.14), transparent 55%),
    radial-gradient(circle at 50% 120%, rgba(255, 194, 77, 0.12), transparent 55%),
    #05060c;
}

.convert-inner {
  max-width: 640px;
}

.convert-band h2 {
  margin: 0 0 14px;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.14;
}

.convert-lead {
  margin: 0 auto 8px;
  max-width: 520px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.convert-band .code-row {
  justify-content: center;
}

.code-row--lg .code-value {
  font-size: 18px;
  padding: 9px 18px;
}

.convert-band .btn-register {
  width: auto;
}

/* ============ 站内索引区 ============ */
.index-cluster {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 36px;
  margin-top: 40px;
}

.index-col-title {
  margin: 0 0 10px;
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.index-col-title a {
  color: var(--cyan);
}

.index-col-title--gap {
  margin-top: 26px;
}

.index-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.index-col li {
  margin-bottom: 9px;
}

.index-col li a {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  transition: color 160ms ease;
}

.index-col li a:hover,
.index-col li a:focus-visible {
  color: #fff;
}

/* ============ 内容页：面包屑 + 正文排版 ============ */
.page-shell {
  min-height: 100svh;
  background: var(--ink);
}

.page-main {
  max-width: 780px;
  margin: 0 auto;
  padding: 34px 24px 72px;
}

.breadcrumb {
  margin-bottom: 26px;
  font-size: 12px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.breadcrumb span[aria-current] {
  color: rgba(231, 237, 247, 0.82);
}

.article-header h1,
.page-title {
  margin: 0 0 14px;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 24px;
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.article-cover {
  margin: 0 0 28px;
}

.article-cover img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.lead {
  margin: 0 0 28px;
  padding: 18px 20px;
  border-left: 2px solid var(--cyan);
  background: rgba(255, 122, 92, 0.05);
  border-radius: 0 10px 10px 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(239, 243, 250, 0.92);
}

.toc {
  margin: 0 0 34px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.toc-title {
  margin: 0 0 10px;
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.toc ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.toc li {
  margin-bottom: 7px;
}

.toc a {
  color: rgba(231, 237, 247, 0.82);
}

.toc a:hover {
  color: var(--cyan);
}

.prose h2 {
  margin: 50px 0 14px;
  font-size: 26px;
  font-weight: 600;
  line-height: 1.3;
  scroll-margin-top: 90px;
}

.prose h3 {
  margin: 32px 0 12px;
  font-size: 19px;
  font-weight: 600;
}

.prose p {
  margin: 0 0 18px;
  color: rgba(231, 237, 247, 0.86);
  font-size: 16px;
  line-height: 1.85;
}

.prose ul,
.prose ol {
  margin: 0 0 20px;
  padding-left: 22px;
  color: rgba(231, 237, 247, 0.86);
}

.prose li {
  margin-bottom: 9px;
  line-height: 1.8;
}

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 正文内的注册按钮不随 .prose 链接色变橙：恢复深色文字、去下划线 */
.prose a.btn-register {
  color: #05070d;
  text-decoration: none;
}

.prose strong {
  color: #fff;
}

.answer {
  margin: 0 0 18px;
  padding-left: 15px;
  border-left: 2px solid var(--rose);
  color: #fff;
  font-weight: 500;
}

.fact {
  margin: 22px 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 14px;
  color: var(--muted);
}

.fact strong {
  color: var(--cyan);
}

.table-wrap {
  overflow-x: auto;
  margin: 22px 0;
}

.data-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 11px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.data-table th {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-weight: 600;
}

.faq {
  margin-top: 12px;
}

.faq-item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.faq-item:last-child {
  border-bottom: 1px solid var(--line);
}

.faq-q {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}

.faq-a {
  margin: 0;
  color: rgba(231, 237, 247, 0.86);
  line-height: 1.8;
}

.sources {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.sources h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.sources ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 13px;
}

.sources li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.sources a {
  color: rgba(231, 237, 247, 0.82);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.related {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.related h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.related ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.related li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.related a {
  display: block;
  padding: 12px 0;
  color: rgba(231, 237, 247, 0.86);
  font-size: 15px;
}

.related a:hover {
  color: var(--cyan);
}

/* ============ reg-cta 复用卡 ============ */
.reg-cta {
  margin: 40px 0;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(160deg, rgba(255, 122, 92, 0.08), rgba(255, 194, 77, 0.06)),
    rgba(6, 9, 18, 0.6);
}

.reg-cta p.eyebrow {
  margin-bottom: 8px;
}

.reg-cta h2,
.reg-cta h3 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 700;
}

.reg-cta .reg-cta-lead {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.reg-cta .btn-register {
  width: auto;
  color: #05070d;
  text-decoration: none;
}

/* ============ 列表页 ============ */
.list-intro {
  max-width: 720px;
  margin-bottom: 40px;
}

.list-intro h1 {
  margin: 0 0 14px;
  font-size: 38px;
  font-weight: 700;
}

.list-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.list-group {
  margin-bottom: 48px;
}

.list-group-title {
  margin: 0 0 4px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.list-group-desc {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}

.list-cards {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list-cards li {
  border-top: 1px solid var(--line);
}

.list-cards li:last-child {
  border-bottom: 1px solid var(--line);
}

.list-cards a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 24px;
  padding: 18px 0;
}

.list-cards .list-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.list-cards a:hover .list-card-title,
.list-cards a:focus-visible .list-card-title {
  color: var(--cyan);
}

.list-cards .list-card-desc {
  grid-column: 1 / 2;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.list-cards .list-card-date {
  font-family: "Courier New", monospace;
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}

/* ============ 工具页 ============ */
.tool-app {
  margin: 30px 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
}

.field {
  margin-bottom: 20px;
}

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: rgba(231, 237, 247, 0.9);
}

.field input,
.field select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--paper);
  font: inherit;
}

.field input:focus-visible,
.field select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
}

.field-hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.tool-result {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.tool-result h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

.result-highlight {
  font-family: "Courier New", monospace;
  color: var(--cyan);
  font-weight: 700;
}

/* ============ 响应式补充 ============ */
@media (max-width: 960px) {
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .band-head h2,
  .convert-band h2 {
    font-size: 32px;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
  }

  .site-nav {
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100svh - 62px);
    padding: 10px 16px 22px;
    overflow-y: auto;
    background: rgba(4, 6, 12, 0.98);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border-bottom: 1px solid var(--line);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: transform 200ms ease, opacity 200ms ease, visibility 200ms ease;
  }

  .site-header.is-menu-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav .nav-link,
  .nav-dropdown-toggle {
    justify-content: flex-start;
    min-height: 48px;
    padding: 0 6px;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-align: left;
  }

  .site-nav .nav-link::after {
    display: none;
  }

  .nav-dropdown {
    display: block;
  }

  .nav-dropdown-toggle {
    width: 100%;
  }

  .nav-dropdown-menu {
    position: static;
    display: none;
    grid-template-columns: 1fr;
    min-width: 0;
    margin: 0;
    padding: 4px 0 10px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    backdrop-filter: none;
  }

  .nav-dropdown.is-open .nav-dropdown-menu {
    display: grid;
  }

  .nav-dropdown-col {
    padding: 4px 0;
  }

  .site-nav .nav-cta {
    justify-content: center;
    min-height: 48px;
    margin-top: 12px;
  }

  .hero-anchor {
    --bw: 100vw;
    --bh: 71.112vw;
    --bx: 0px;
    --by: 0px;
  }

  .hero-copy {
    width: min(calc(var(--fw) * 0.9), 94vw);
  }

  .hero-copy .hero-kicker,
  .hero-copy .hero-sub {
    display: none;
  }

  .hero-copy .hero-title {
    font-size: calc(var(--fh) * 0.27);
  }

  .hero-convert {
    display: none;
  }

  .hero-belt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin: 0;
    padding: 20px 20px 4px;
    background: #04050a;
    text-align: center;
  }

  .hero-belt .hero-kicker {
    color: rgba(234, 240, 250, 0.72);
    font-size: 11px;
    letter-spacing: 0.2em;
  }

  .hero-belt .hero-sub {
    max-width: 34ch;
    color: rgba(240, 244, 250, 0.9);
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    gap: 12px;
  }

  .hero-code,
  .hero-cta {
    width: 100%;
    justify-content: center;
  }

  .band,
  .convert-band {
    padding: 56px 20px;
  }

  .tool-list {
    grid-template-columns: 1fr;
  }

  .index-cluster {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: 44px 20px 32px;
  }

  .page-main {
    padding: 24px 18px 60px;
  }

  .article-header h1,
  .page-title,
  .list-intro h1 {
    font-size: 28px;
  }

  .prose h2 {
    font-size: 22px;
  }

  .list-cards a {
    grid-template-columns: 1fr;
  }

  .list-cards .list-card-date {
    grid-row: 1;
  }
}

/* 语言切换器（下拉式，复用教程下拉的开合机制与视觉语言） */
.nav-lang {
  margin-left: 4px;
}

.nav-lang-menu {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 30;
  display: none;
  flex-direction: column;
  min-width: 152px;
  margin-top: 6px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(6, 8, 16, 0.96);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.55);
}

.nav-lang:hover .nav-lang-menu,
.nav-lang:focus-within .nav-lang-menu,
.nav-lang.is-open .nav-lang-menu {
  display: flex;
}

.site-nav .nav-lang-option {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 9px;
  color: rgba(231, 237, 247, 0.72);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  text-shadow: none;
}

.site-nav a.nav-lang-option:hover,
.site-nav a.nav-lang-option:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.site-nav .nav-lang-option.is-current {
  color: #fff;
  font-weight: 700;
  cursor: default;
}

.nav-lang-menu a::after {
  content: none;
}

@media (max-width: 720px) {
  .nav-lang {
    margin-left: 0;
    margin-top: 4px;
  }

  .nav-lang-menu {
    position: static;
    min-width: 0;
    margin: 0;
    padding: 4px 0 10px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-nav .nav-lang-option {
    min-height: 48px;
    padding: 0 12px;
    font-size: 15px;
  }
}

/* 阿姆哈拉语（吉兹字母）：字体与行高，避免字形被裁切 */
[lang="am"] {
  font-family: "Ebrima", "Noto Sans Ethiopic", "Nyala", Arial, "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
}

[lang="am"] body {
  line-height: 1.75;
}

[lang="am"] h1,
[lang="am"] h2,
[lang="am"] h3,
[lang="am"] .hero-title,
[lang="am"] .page-title,
[lang="am"] .list-intro h1 {
  line-height: 1.4;
}