/* 暗网｜原创战术录像带档案室样式 */
:root {
  --night: #081121;
  --night-soft: #10203a;
  --panel: #122946;
  --panel-deep: #0b1a30;
  --line: rgba(191, 238, 241, 0.18);
  --line-strong: rgba(191, 238, 241, 0.42);
  --paper: #f5f7fb;
  --mist: #c4d2e1;
  --muted: #88a0b8;
  --teal: #69e2dc;
  --teal-soft: #b8fbf4;
  --amber: #f3a14a;
  --amber-soft: #ffd096;
  --coral: #f17a82;
  --violet: #9186f7;
  --success: #9ae5a5;
  --shadow: 0 26px 68px rgba(0, 0, 0, 0.28);
  --shadow-lift: 0 30px 70px rgba(0, 0, 0, 0.4);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 15px;
  --radius-sm: 10px;
  --max: 1220px;
  --sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 88% 4%, rgba(105, 226, 220, 0.14), transparent 22rem),
    radial-gradient(circle at 8% 40%, rgba(145, 134, 247, 0.1), transparent 26rem),
    var(--night);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(105, 226, 220, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(105, 226, 220, 0.018) 1px, transparent 1px);
  background-size: 46px 46px;
  content: "";
  mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
}

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

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

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

::selection {
  color: var(--night);
  background: var(--amber);
}

.container {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  z-index: 2000;
  top: -80px;
  left: 24px;
  padding: 10px 16px;
  border-radius: 0 0 12px 12px;
  color: var(--night);
  background: var(--amber);
  font-weight: 900;
  transition: top 180ms ease;
}

.skip-link:focus {
  top: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px rgba(105, 226, 220, 0.12);
  content: "";
}

.eyebrow.amber {
  color: var(--amber);
}

.kicker-number {
  color: rgba(105, 226, 220, 0.52);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.section {
  position: relative;
  padding: 96px 0;
}

.section-tight {
  padding: 66px 0;
}

.section-surface {
  background: linear-gradient(135deg, rgba(16, 32, 58, 0.84), rgba(9, 21, 39, 0.8));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.55fr);
  align-items: end;
  gap: 28px;
  margin-bottom: 36px;
}

.section-heading h2,
.page-intro h1,
.hero-copy h1 {
  margin: 0;
  color: var(--paper);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1.04;
}

.section-heading h2 {
  max-width: 760px;
  font-size: clamp(2rem, 4.4vw, 4rem);
}

.section-heading > p,
.section-heading > div > p:last-child {
  max-width: 390px;
  margin: 0;
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal);
  font-weight: 800;
}

.text-link::after {
  display: inline-grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  content: "↗";
  font-family: var(--mono);
  transition: transform 180ms ease, background 180ms ease;
}

.text-link:hover::after {
  transform: translate(3px, -3px);
  color: var(--night);
  background: var(--teal);
}

/* 顶部信息与导航 */
.topline {
  border-bottom: 1px solid rgba(191, 238, 241, 0.1);
  color: var(--mist);
  background: rgba(5, 12, 24, 0.82);
  font-size: 0.77rem;
  backdrop-filter: blur(14px);
}

.topline .container {
  display: flex;
  min-height: 35px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topline-note,
.topline-links {
  display: flex;
  align-items: center;
  gap: 9px;
}

.topline-note {
  white-space: nowrap;
}

.topline-links {
  gap: 18px;
  color: var(--muted);
}

.topline-links a:hover {
  color: var(--teal-soft);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 14px var(--success);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid rgba(191, 238, 241, 0.1);
  background: rgba(8, 17, 33, 0.86);
  backdrop-filter: blur(18px);
}

.nav-row {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(243, 161, 74, 0.65);
  border-radius: 13px;
  background: rgba(11, 26, 48, 0.9);
  box-shadow: inset 0 0 20px rgba(243, 161, 74, 0.12);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-wordmark {
  display: grid;
  gap: 1px;
  color: var(--paper);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
}

.brand-wordmark small {
  margin-top: 5px;
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.46rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 25px);
  margin-left: auto;
}

.primary-nav a {
  position: relative;
  padding: 8px 0;
  color: var(--mist);
  font-size: 0.9rem;
  font-weight: 700;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--amber);
  content: "";
  transition: transform 180ms ease;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--teal-soft);
}

.primary-nav a:hover::after,
.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta,
.button-primary,
.button-secondary {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.87rem;
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.nav-cta,
.button-primary {
  color: var(--night) !important;
  background: var(--amber);
  box-shadow: 0 10px 22px rgba(243, 161, 74, 0.21);
}

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

.button-primary:hover,
.nav-cta:hover {
  transform: translateY(-2px);
  color: var(--night) !important;
  box-shadow: 0 15px 30px rgba(243, 161, 74, 0.32);
}

.button-secondary {
  border: 1px solid var(--line-strong);
  color: var(--teal-soft);
  background: rgba(105, 226, 220, 0.05);
}

.button-secondary:hover {
  transform: translateY(-2px);
  background: rgba(105, 226, 220, 0.12);
}

.menu-toggle {
  display: none;
  width: 43px;
  height: 39px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--paper);
  background: transparent;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  display: block;
  width: 17px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  content: "";
}

/* 搜索 */
.search-strip {
  position: relative;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 23, 42, 0.76);
}

.search-wrap {
  display: grid;
  grid-template-columns: auto minmax(280px, 1fr) auto;
  align-items: center;
  gap: 20px;
  min-height: 66px;
}

.search-label,
.search-hint {
  font-size: 0.82rem;
}

.search-label {
  color: var(--amber-soft);
  font-family: var(--mono);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.search-hint {
  color: var(--muted);
}

.search-field {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
}

.search-field input {
  width: 100%;
  height: 39px;
  padding: 0 108px 0 15px;
  border: 1px solid rgba(191, 238, 241, 0.2);
  border-radius: 10px;
  outline: none;
  color: var(--paper);
  background: rgba(5, 15, 29, 0.72);
}

.search-field input:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(105, 226, 220, 0.09);
}

.search-field button {
  position: absolute;
  right: 4px;
  height: 31px;
  padding: 0 13px;
  border: 0;
  border-radius: 7px;
  color: var(--night);
  background: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
}

.search-result {
  position: absolute;
  z-index: 100;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  display: none;
  padding: 13px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--mist);
  background: #102440;
  box-shadow: var(--shadow);
  font-size: 0.88rem;
}

.search-result.is-visible {
  display: block;
}

.search-result a {
  color: var(--teal);
  font-weight: 800;
}

/* 首屏 */
.hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #0a162a;
}

.hero-media,
.hero-media::after {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.83;
}

.hero-media::after {
  background:
    linear-gradient(90deg, rgba(8, 17, 33, 0.96) 0%, rgba(8, 17, 33, 0.72) 44%, rgba(8, 17, 33, 0.17) 100%),
    linear-gradient(0deg, rgba(8, 17, 33, 0.92) 0%, transparent 48%);
  content: "";
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 650px;
  align-items: center;
  padding: 88px 0 130px;
}

.hero-copy {
  max-width: 780px;
}

.hero-copy h1 {
  max-width: 800px;
  font-size: clamp(3rem, 6.1vw, 6.3rem);
}

.hero-copy h1 span {
  color: var(--amber);
}

.hero-subtitle {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 31px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid rgba(191, 238, 241, 0.23);
  border-radius: 999px;
  color: var(--mist);
  background: rgba(11, 26, 48, 0.58);
  font-size: 0.77rem;
}

.hero-meta span::before {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
  content: "";
}

.hero-orbit {
  position: absolute;
  right: 4%;
  bottom: 35px;
  display: grid;
  width: 150px;
  height: 150px;
  place-items: center;
  border: 1px dashed rgba(105, 226, 220, 0.55);
  border-radius: 50%;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  animation: rotateOrbit 18s linear infinite;
}

.hero-orbit::before {
  position: absolute;
  width: 94px;
  height: 94px;
  border: 1px solid rgba(243, 161, 74, 0.45);
  border-radius: 50%;
  content: "";
}

@keyframes rotateOrbit {
  to { transform: rotate(360deg); }
}

/* 数据带 */
.metrics-band {
  position: relative;
  z-index: 2;
  margin-top: -64px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(14, 34, 60, 0.94);
  box-shadow: var(--shadow);
}

.metric {
  display: flex;
  min-height: 124px;
  align-items: center;
  gap: 13px;
  padding: 22px;
  border-right: 1px solid var(--line);
}

.metric:last-child {
  border-right: 0;
}

.metric-icon {
  display: grid;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 11px;
  color: var(--amber);
  background: rgba(243, 161, 74, 0.13);
  font-family: var(--mono);
  font-weight: 900;
}

.metric-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem;
}

.metric-value {
  margin: 1px 0;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 900;
}

.metric-copy {
  margin: 0;
  color: var(--teal-soft);
  font-size: 0.72rem;
}

/* 视频卡片 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.video-card {
  position: relative;
  overflow: hidden;
  min-height: 330px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, #18365d, #0b1a30);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.16);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.video-card:hover,
.video-card:focus-within,
.video-card.is-playing {
  transform: translateY(-7px);
  border-color: rgba(105, 226, 220, 0.65);
  box-shadow: var(--shadow-lift);
}

.video-card-visual {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 15%, rgba(243, 161, 74, 0.9) 0 2px, transparent 3px),
    linear-gradient(138deg, rgba(105, 226, 220, 0.2), transparent 42%),
    linear-gradient(25deg, #183962, #0b1930 63%, #271b45);
}

.video-card-visual::before,
.video-card-visual::after {
  position: absolute;
  content: "";
}

.video-card-visual::before {
  top: 14%;
  right: 11%;
  width: 94px;
  height: 94px;
  border: 1px solid rgba(105, 226, 220, 0.6);
  border-radius: 50%;
  box-shadow: -29px 36px 0 -19px rgba(243, 161, 74, 0.9);
}

.video-card-visual::after {
  right: -35px;
  bottom: 29px;
  left: 20px;
  height: 42%;
  transform: skewY(-9deg);
  border-top: 1px solid rgba(191, 238, 241, 0.42);
  background: linear-gradient(90deg, rgba(105, 226, 220, 0.2), rgba(145, 134, 247, 0.12));
}

.video-card:nth-child(2) .video-card-visual {
  background: linear-gradient(150deg, #39254f, #112642 52%, #154d55);
}

.video-card:nth-child(3) .video-card-visual {
  background: linear-gradient(145deg, #1d4b61, #12223b 55%, #553149);
}

.video-card:nth-child(4) .video-card-visual {
  background: linear-gradient(140deg, #3e2449, #132848 54%, #12524e);
}

.video-card:nth-child(5) .video-card-visual {
  background: linear-gradient(135deg, #143757, #101a35 55%, #70422c);
}

.video-card:nth-child(6) .video-card-visual {
  background: linear-gradient(145deg, #25315b, #0c1d35 60%, #1a5a58);
}

.video-card-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 330px;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  background: linear-gradient(0deg, rgba(6, 15, 29, 0.95), rgba(6, 15, 29, 0.04) 71%);
}

.card-topline,
.card-engagement {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.card-label,
.card-duration,
.card-engagement span {
  padding: 4px 8px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 800;
}

.card-label {
  color: var(--night);
  background: var(--amber);
}

.card-duration,
.card-engagement span {
  color: var(--teal-soft);
  background: rgba(8, 17, 33, 0.72);
}

.video-card h3 {
  margin: 14px 0 8px;
  font-size: 1.25rem;
  line-height: 1.25;
}

.video-card p {
  margin: 0;
  color: var(--mist);
  font-size: 0.87rem;
}

.card-engagement {
  margin-top: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.play-button {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  display: grid;
  width: 60px;
  height: 60px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  color: var(--paper);
  background: rgba(8, 17, 33, 0.62);
  box-shadow: 0 0 0 10px rgba(105, 226, 220, 0.1);
  font-size: 1.3rem;
  opacity: 0;
  transform: translate(-50%, -38%) scale(0.86);
  transition: opacity 180ms ease, transform 180ms ease, background 180ms ease;
}

.video-card:hover .play-button,
.video-card:focus-within .play-button,
.video-card.is-playing .play-button {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.video-card.is-playing .play-button {
  color: var(--night);
  background: var(--teal);
}

/* 竖屏短视频 */
.reel-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.65fr);
  gap: 22px;
}

.reel-intro {
  padding: 28px;
  border: 1px solid rgba(243, 161, 74, 0.32);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(243, 161, 74, 0.12), rgba(11, 26, 48, 0.76));
}

.reel-intro h3 {
  margin: 0 0 14px;
  font-size: 1.75rem;
  line-height: 1.16;
}

.reel-intro p {
  color: var(--mist);
}

.reel-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.reel-card {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(165deg, #245573, #14223d 53%, #5b3046);
}

.reel-card:nth-child(2) {
  background: linear-gradient(165deg, #522e4d, #142944 58%, #17706c);
}

.reel-card:nth-child(3) {
  background: linear-gradient(165deg, #5d3c28, #182540 55%, #2a6b6a);
}

.reel-card:nth-child(4) {
  background: linear-gradient(165deg, #263b68, #142342 55%, #683c5c);
}

.reel-card::before {
  position: absolute;
  top: 16px;
  right: 16px;
  left: 16px;
  height: 44%;
  border: 1px solid rgba(191, 238, 241, 0.34);
  border-radius: 999px 999px 22px 22px;
  content: "";
}

.reel-card::after {
  position: absolute;
  width: 120px;
  height: 120px;
  border: 12px solid rgba(243, 161, 74, 0.36);
  border-radius: 50%;
  content: "";
  transform: translate(-25%, -8%);
}

.reel-copy {
  position: absolute;
  right: 16px;
  bottom: 17px;
  left: 16px;
}

.reel-copy strong {
  display: block;
  font-size: 0.96rem;
  line-height: 1.33;
}

.reel-copy span {
  display: block;
  margin-top: 7px;
  color: var(--teal-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
}

/* 图像横幅 */
.feature-ribbon {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel-deep);
  box-shadow: var(--shadow);
}

.ribbon-visual {
  min-height: 390px;
  overflow: hidden;
}

.ribbon-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ribbon-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 5vw, 64px);
}

.ribbon-copy h2 {
  margin: 0;
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  line-height: 1.08;
}

.ribbon-copy > p:not(.eyebrow) {
  color: var(--mist);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  padding: 6px 10px;
  border: 1px solid rgba(105, 226, 220, 0.22);
  border-radius: 999px;
  color: var(--teal-soft);
  background: rgba(105, 226, 220, 0.06);
  font-size: 0.75rem;
  font-weight: 800;
}

/* 游戏专区 */
.game-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.game-path {
  position: relative;
  display: grid;
  grid-template-columns: 70px 1fr auto;
  align-items: center;
  gap: 18px;
  min-height: 128px;
  padding: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(16, 41, 70, 0.62);
  transition: transform 180ms ease, border-color 180ms ease;
}

.game-path:hover {
  transform: translateX(5px);
  border-color: var(--amber);
}

.path-number {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 900;
}

.game-path h3 {
  margin: 0 0 4px;
  font-size: 1.16rem;
}

.game-path p {
  margin: 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.path-arrow {
  color: var(--teal);
  font-size: 1.5rem;
}

/* AI 模块 */
.ai-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.88fr) minmax(0, 1.3fr);
  gap: 20px;
}

.ai-panel {
  position: relative;
  min-height: 400px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid rgba(145, 134, 247, 0.38);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 80% 15%, rgba(145, 134, 247, 0.33), transparent 12rem),
    linear-gradient(145deg, #222c58, #0d1c35 70%);
}

.ai-panel::after {
  position: absolute;
  right: -10px;
  bottom: -34px;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(105, 226, 220, 0.4);
  border-radius: 50%;
  box-shadow: 0 0 0 36px rgba(105, 226, 220, 0.05), 0 0 0 73px rgba(243, 161, 74, 0.04);
  content: "";
}

.ai-panel > * {
  position: relative;
  z-index: 1;
}

.ai-panel h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.12;
}

.ai-panel p:not(.eyebrow) {
  color: var(--mist);
}

.ai-signal {
  display: inline-flex;
  margin-top: 26px;
  padding: 9px 11px;
  border: 1px solid rgba(105, 226, 220, 0.35);
  border-radius: 8px;
  color: var(--teal-soft);
  background: rgba(8, 17, 33, 0.5);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.ai-tools {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.tool-card {
  padding: 23px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(11, 26, 48, 0.78);
}

.tool-icon {
  display: inline-grid;
  width: 35px;
  height: 35px;
  margin-bottom: 16px;
  place-items: center;
  border-radius: 10px;
  color: var(--night);
  background: var(--teal);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 900;
}

.tool-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.tool-card p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

/* 社区与专家 */
.community-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  gap: 22px;
}

.community-image {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
}

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

.community-caption {
  position: absolute;
  right: 20px;
  bottom: 20px;
  left: 20px;
  padding: 24px;
  border: 1px solid rgba(191, 238, 241, 0.2);
  border-radius: 16px;
  background: rgba(7, 16, 30, 0.79);
  backdrop-filter: blur(10px);
}

.community-caption h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  line-height: 1.17;
}

.community-caption p:not(.eyebrow) {
  margin-bottom: 0;
  color: var(--mist);
}

.community-rail {
  display: grid;
  gap: 12px;
}

.community-item {
  display: grid;
  grid-template-columns: 43px 1fr;
  column-gap: 15px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 34, 60, 0.62);
}

.community-index {
  grid-row: span 2;
  color: var(--amber);
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 900;
}

.community-item strong {
  font-size: 1rem;
}

.community-item p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.experts-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 13px;
}

.expert-card {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(30, 55, 91, 0.82), rgba(10, 25, 46, 0.92));
}

.expert-avatar {
  display: grid;
  width: 50px;
  height: 50px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 14px;
  color: var(--night);
  background: linear-gradient(135deg, var(--teal), var(--amber));
  font-family: var(--mono);
  font-weight: 900;
}

.expert-card h3 {
  margin: 0;
  font-size: 1.12rem;
}

.expert-role {
  margin: 5px 0 13px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
}

.expert-card p:not(.expert-role) {
  margin: 0 0 11px;
  color: var(--muted);
  font-size: 0.79rem;
}

.expert-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.expert-actions a {
  color: var(--amber-soft);
  font-size: 0.76rem;
  font-weight: 800;
}

/* 合作与加入 */
.partner-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 11px;
}

.partner-logo {
  display: grid;
  min-height: 100px;
  place-items: center;
  padding: 15px;
  border: 1px dashed rgba(191, 238, 241, 0.3);
  border-radius: 12px;
  color: var(--mist);
  background: rgba(11, 26, 48, 0.5);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-align: center;
}

.partner-logo:nth-child(2n) {
  color: var(--amber-soft);
}

.partner-logo:nth-child(3n) {
  color: var(--teal-soft);
}

.howto-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

.howto-step {
  padding: 24px 20px;
  border-top: 2px solid var(--amber);
  background: rgba(15, 36, 63, 0.57);
}

.howto-step strong {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.howto-step h3 {
  margin: 10px 0 8px;
  font-size: 1.14rem;
}

.howto-step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

/* FAQ、评论、联系 */
.faq-review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(290px, 0.85fr);
  gap: 48px;
}

.faq-list,
.review-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(11, 26, 48, 0.61);
}

.faq-item summary {
  padding: 15px 0;
  color: var(--paper);
  cursor: pointer;
  font-weight: 800;
}

.faq-item p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.88rem;
}

.review-card {
  padding: 18px;
  border: 1px solid rgba(243, 161, 74, 0.26);
  border-radius: 12px;
  background: linear-gradient(140deg, rgba(243, 161, 74, 0.11), rgba(12, 28, 49, 0.65));
}

.review-card p {
  margin: 0;
  color: var(--mist);
  font-size: 0.88rem;
}

.review-byline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
}

.review-byline strong {
  color: var(--paper);
  font-size: 0.8rem;
}

.review-stars {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.contact-card {
  position: relative;
  padding: clamp(30px, 5vw, 62px);
  overflow: hidden;
  border: 1px solid rgba(105, 226, 220, 0.35);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 82% 18%, rgba(105, 226, 220, 0.19), transparent 16rem),
    linear-gradient(135deg, #123558, #0b1a31 73%);
}

.contact-card::after {
  position: absolute;
  right: -40px;
  bottom: -50px;
  width: 250px;
  height: 250px;
  border: 1px dashed rgba(243, 161, 74, 0.48);
  border-radius: 50%;
  content: "";
}

.contact-card > * {
  position: relative;
  z-index: 1;
}

.contact-card h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.07;
}

.contact-card > p:not(.eyebrow) {
  max-width: 720px;
  color: var(--mist);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 25px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.85fr;
  gap: 16px;
  margin-top: 22px;
}

.contact-info-panel,
.qr-panel {
  padding: 22px;
  border: 1px solid rgba(191, 238, 241, 0.18);
  border-radius: 14px;
  background: rgba(6, 16, 30, 0.46);
}

.contact-info {
  display: grid;
  gap: 7px;
  color: var(--mist);
  font-size: 0.86rem;
}

.contact-info strong {
  color: var(--teal-soft);
}

.qr-pair {
  display: flex;
  gap: 14px;
}

.qr-box {
  display: grid;
  flex: 1;
  gap: 8px;
  place-items: center;
  color: var(--mist);
  font-size: 0.72rem;
  text-align: center;
}

.qr-code {
  width: 88px;
  height: 88px;
  border: 5px solid var(--paper);
  background:
    linear-gradient(90deg, var(--night) 18%, transparent 18% 31%, var(--night) 31% 43%, transparent 43% 58%, var(--night) 58% 74%, transparent 74%),
    linear-gradient(var(--night) 19%, transparent 19% 34%, var(--night) 34% 46%, transparent 46% 63%, var(--night) 63% 78%, transparent 78%),
    var(--teal-soft);
  image-rendering: pixelated;
}

.qr-box:nth-child(2) .qr-code {
  background:
    linear-gradient(90deg, var(--night) 14%, transparent 14% 28%, var(--night) 28% 39%, transparent 39% 55%, var(--night) 55% 68%, transparent 68%),
    linear-gradient(var(--night) 15%, transparent 15% 30%, var(--night) 30% 48%, transparent 48% 61%, var(--night) 61% 74%, transparent 74%),
    var(--amber-soft);
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--line);
  background: #061120;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.25fr 1fr 0.85fr;
  gap: 30px;
  padding: 54px 0 36px;
}

.footer-brand-copy {
  max-width: 330px;
  color: var(--muted);
  font-size: 0.86rem;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-content: start;
  gap: 10px 18px;
}

.footer-nav a {
  color: var(--mist);
  font-size: 0.84rem;
}

.footer-nav a:hover {
  color: var(--teal);
}

.footer-contact {
  display: grid;
  align-content: start;
  gap: 5px;
  color: var(--muted);
  font-size: 0.79rem;
}

.footer-contact strong {
  color: var(--amber-soft);
  font-family: var(--mono);
  letter-spacing: 0.06em;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 17px 0 25px;
  border-top: 1px solid rgba(191, 238, 241, 0.09);
  color: var(--muted);
  font-size: 0.77rem;
}

.share-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.share-button {
  padding: 5px 8px;
  border: 1px solid rgba(191, 238, 241, 0.18);
  border-radius: 6px;
  color: var(--mist);
  background: transparent;
  font-size: 0.7rem;
}

.share-button:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.toast {
  position: fixed;
  z-index: 2000;
  right: 20px;
  bottom: 20px;
  max-width: min(360px, calc(100vw - 40px));
  padding: 12px 15px;
  border: 1px solid rgba(105, 226, 220, 0.42);
  border-radius: 10px;
  color: var(--paper);
  background: rgba(11, 26, 48, 0.96);
  box-shadow: var(--shadow);
  font-size: 0.83rem;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  animation: riseIn 700ms ease both;
}

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 内页 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 25px;
  color: var(--muted);
  font-size: 0.82rem;
}

.breadcrumbs a {
  color: var(--teal);
}

.breadcrumbs span + span::before {
  margin-right: 8px;
  color: var(--muted);
  content: "/";
}

.inner-hero {
  padding: 90px 0 68px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(19, 58, 88, 0.7), rgba(8, 17, 33, 0.92));
}

.page-intro {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 35px;
  align-items: end;
}

.page-intro h1 {
  font-size: clamp(2.7rem, 5.4vw, 5.5rem);
}

.page-intro > p {
  margin: 0;
  color: var(--mist);
  font-size: 1.04rem;
}

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

.content-row {
  display: grid;
  grid-template-columns: 80px minmax(200px, 1fr) minmax(150px, 0.7fr) auto;
  align-items: center;
  gap: 19px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: padding 180ms ease, color 180ms ease;
}

.content-row:hover {
  padding-right: 10px;
  padding-left: 10px;
  color: var(--teal-soft);
}

.row-id,
.row-tag {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 800;
}

.content-row h3 {
  margin: 0;
  font-size: 1.05rem;
}

.content-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.pillar {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(12, 29, 52, 0.7);
}

.pillar strong {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.pillar h3 {
  margin: 10px 0 8px;
  font-size: 1.18rem;
}

.pillar p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

/* 响应式 */
@media (max-width: 1040px) {
  .primary-nav { gap: 13px; }
  .primary-nav a { font-size: 0.82rem; }
  .experts-grid { grid-template-columns: repeat(3, 1fr); }
  .partner-wall { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 820px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .topline-links { display: none; }
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    margin: 0;
    padding: 15px 18px 19px;
    border-bottom: 1px solid var(--line);
    background: #0b1b31;
    box-shadow: var(--shadow);
  }
  .primary-nav.is-open { display: grid; }
  .primary-nav a { padding: 9px 0; }
  .nav-cta { width: max-content; margin-top: 4px; }
  .search-wrap { grid-template-columns: 1fr; gap: 6px; padding: 12px 0; }
  .search-hint { display: none; }
  .hero, .hero .container { min-height: 590px; }
  .hero .container { padding-top: 66px; }
  .hero-media img { object-position: 63% center; }
  .hero-orbit { right: -28px; bottom: 30px; width: 120px; height: 120px; opacity: 0.65; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section-heading,
  .page-intro,
  .feature-ribbon,
  .reel-layout,
  .ai-layout,
  .community-layout,
  .faq-review-layout,
  .contact-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .reel-list { grid-template-columns: repeat(4, minmax(135px, 1fr)); overflow-x: auto; padding-bottom: 5px; }
  .reel-card { min-width: 135px; }
  .game-paths { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .nav-row { min-height: 67px; }
  .brand-wordmark { font-size: 1.1rem; }
  .hero-copy h1 { font-size: clamp(2.8rem, 15vw, 4.2rem); }
  .hero-subtitle { font-size: 0.97rem; }
  .metrics-band { margin-top: -42px; }
  .metric { min-height: 108px; padding: 15px; }
  .metric-icon { width: 33px; height: 33px; }
  .video-grid, .ai-tools, .pillars, .experts-grid, .howto-grid { grid-template-columns: 1fr; }
  .video-card { min-height: 300px; }
  .video-card-content { min-height: 300px; }
  .section { padding: 65px 0; }
  .section-tight { padding: 48px 0; }
  .ribbon-visual { min-height: 260px; }
  .community-image { min-height: 420px; }
  .partner-wall { grid-template-columns: repeat(2, 1fr); }
  .game-path { grid-template-columns: 46px 1fr auto; gap: 10px; }
  .content-row { grid-template-columns: 50px 1fr; gap: 10px; }
  .content-row p { grid-column: 2; }
  .row-tag { grid-column: 2; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); }
  .footer-contact { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .share-list { justify-content: flex-start; }
  .qr-pair { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}