:root {
  --obsidian: #070a0f;
  --graphite: #141a22;
  --navy: #0b1f3a;
  --gold: #c7a86b;
  --blue: #1f7bff;
  --cyan: #22d3c5;
  --green: #17b26a;
  --red: #d92d20;
  --mist: #eef3f8;
  --gray: #8a95a6;
  --line: rgba(199, 168, 107, 0.22);
  --panel: rgba(20, 26, 34, 0.78);
  --hover-scale: 1.4;
  color-scheme: dark;
  font-family:
    "Inter", "DIN Alternate", "SF Pro Display", "HarmonyOS Sans SC",
    "MiSans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  margin: 0;
  color: var(--mist);
  background:
    radial-gradient(circle at 56% 18%, rgba(31, 123, 255, 0.12), transparent 24%),
    radial-gradient(circle at 86% 12%, rgba(34, 211, 197, 0.12), transparent 20%),
    linear-gradient(90deg, rgba(199, 168, 107, 0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(34, 211, 197, 0.038) 1px, transparent 1px),
    linear-gradient(135deg, #04070c 0%, #06111c 48%, #02050a 100%);
  background-repeat: no-repeat, no-repeat, repeat, repeat, no-repeat;
  background-size: auto, auto, 56px 56px, 56px 56px, auto;
}

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

button,
video,
img {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 clamp(28px, 4vw, 64px);
  border-bottom: 1px solid rgba(199, 168, 107, 0.18);
  background: rgba(4, 7, 12, 0.9);
  backdrop-filter: blur(18px);
}

.brand,
.nav-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  color: #ffe6a8;
  font-size: 18px;
  font-weight: 800;
}

.brand img {
  width: 34px;
  height: 34px;
}

.nav-actions {
  gap: clamp(18px, 3vw, 42px);
  color: rgba(238, 243, 248, 0.74);
  font-size: 15px;
  font-weight: 700;
}

.nav-actions a {
  position: relative;
  padding: 22px 0 19px;
  border: 0;
  border-radius: 0;
}

.nav-actions a:hover,
.nav-actions a:focus-visible {
  color: #ffe6a8;
  background: none;
  outline: none;
}

.nav-actions .nav-active {
  color: #ffe6a8;
}

.nav-actions .nav-active::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, rgba(255, 230, 168, 0.2), #ffe6a8, rgba(255, 230, 168, 0.2));
  box-shadow: 0 0 16px rgba(199, 168, 107, 0.62);
}

main {
  width: min(1720px, 100%);
  margin: 0 auto;
  padding: 0 clamp(24px, 4vw, 82px) 42px;
}

.showcase {
  position: relative;
  overflow: visible;
  padding: clamp(24px, 3vw, 34px) 0 0;
}

.showcase::after {
  position: absolute;
  inset: auto -5vw 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(199, 168, 107, 0.52), transparent);
}

.showcase-head {
  display: grid;
  grid-template-columns: minmax(460px, 0.95fr) minmax(520px, 1.05fr);
  gap: clamp(26px, 4vw, 68px);
  align-items: start;
  min-height: 244px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 12px;
  color: #fff9e8;
  font-size: clamp(46px, 4.8vw, 74px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-text {
  max-width: 680px;
  margin-bottom: 22px;
  color: rgba(238, 243, 248, 0.78);
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.65;
}

.showcase-visual {
  position: relative;
  min-height: 238px;
}

.showcase-visual::before {
  position: absolute;
  inset: 18px 130px 8px 0;
  content: "";
  background:
    radial-gradient(circle at 72% 42%, rgba(34, 211, 197, 0.16), transparent 27%),
    linear-gradient(90deg, transparent, rgba(34, 211, 197, 0.12), transparent);
  filter: blur(0.1px);
}

.showcase-visual::after {
  position: absolute;
  inset: 0 155px 6px 24%;
  content: "";
  background:
    linear-gradient(180deg, transparent 42%, rgba(199, 168, 107, 0.44) 42% 48%, transparent 48%),
    linear-gradient(90deg, transparent 0 3%, rgba(199, 168, 107, 0.36) 3% 4%, transparent 4% 11%, rgba(34, 211, 197, 0.64) 11% 12%, transparent 12% 20%, rgba(199, 168, 107, 0.46) 20% 21%, transparent 21%);
  opacity: 0.7;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 82%, transparent);
}

.showcase-visual img {
  position: absolute;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 18px 26px rgba(0, 0, 0, 0.38));
}

.showcase-visual .radar {
  top: -4px;
  right: 210px;
  width: min(34%, 250px);
  opacity: 0.72;
}

.showcase-visual .kline {
  top: 28px;
  left: 8%;
  width: min(46%, 360px);
  opacity: 0.55;
}

.showcase-visual .flow {
  top: 40px;
  left: 18%;
  width: min(50%, 390px);
  opacity: 0.42;
}

.showcase-visual .xinxin-host {
  z-index: 2;
  right: 280px;
  bottom: 0;
  width: min(27%, 220px);
  filter: drop-shadow(0 20px 22px rgba(0, 0, 0, 0.44)) drop-shadow(0 0 22px rgba(31, 123, 255, 0.22));
}

.feature-panel {
  position: absolute;
  top: 26px;
  right: 0;
  display: grid;
  gap: 14px;
  width: min(230px, 28%);
  padding: 16px 18px;
  border: 1px solid rgba(199, 168, 107, 0.28);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(199, 168, 107, 0.08), transparent 44%),
    rgba(7, 10, 15, 0.72);
  box-shadow: inset 0 0 34px rgba(199, 168, 107, 0.05);
}

.feature-panel span {
  position: relative;
  display: grid;
  gap: 3px;
  padding-left: 26px;
  color: rgba(238, 243, 248, 0.72);
  font-size: 13px;
  line-height: 1.35;
}

.feature-panel span::before {
  position: absolute;
  top: 1px;
  left: 0;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid rgba(255, 230, 168, 0.64);
  border-radius: 50%;
  color: #ffe6a8;
  font-size: 10px;
  content: "✦";
}

.feature-panel strong {
  color: #ffe6a8;
  font-size: 14px;
}


.filters {
  display: inline-flex;
  gap: 6px;
  width: fit-content;
  margin: -8px 0 6px auto;
  padding: 4px;
  border: 1px solid rgba(199, 168, 107, 0.2);
  border-radius: 8px;
  background: rgba(7, 10, 15, 0.62);
}

.filter-button {
  min-width: 68px;
  min-height: 36px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  color: rgba(238, 243, 248, 0.72);
  background: transparent;
  cursor: pointer;
}

.filter-button:hover,
.filter-button:focus-visible,
.filter-button.is-active {
  color: #071018;
  background: linear-gradient(135deg, #f0d189, var(--gold));
  outline: none;
}

.video-grid {
  --snake-gap: clamp(66px, 5.4vw, 94px);
  --timeline-axis-y: 31px;
  --timeline-card-top: 64px;
  --connector-width: clamp(92px, 6.2vw, 124px);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--snake-gap);
  padding: 30px clamp(16px, 2vw, 30px) 8px;
  overflow: visible;
}

.snake-row {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(34px, 2.9vw, 48px);
  direction: ltr;
  min-height: 286px;
}

.snake-row.is-reverse {
  direction: rtl;
}

.snake-row::before {
  position: absolute;
  z-index: 0;
  top: var(--timeline-axis-y);
  right: calc(var(--connector-width) / -2);
  left: calc(var(--connector-width) / -2);
  height: 26px;
  content: "";
  background:
    repeating-linear-gradient(90deg, transparent 0 9px, rgba(255, 230, 168, 0.52) 9px 10px, transparent 10px 18px),
    linear-gradient(0deg, transparent 0 calc(50% - 1px), rgba(255, 230, 168, 0.98) calc(50% - 1px) calc(50% + 1px), transparent calc(50% + 1px) 100%),
    linear-gradient(90deg, transparent, rgba(199, 168, 107, 0.42), rgba(255, 230, 168, 0.48), rgba(199, 168, 107, 0.38), transparent);
  box-shadow:
    0 0 30px rgba(199, 168, 107, 0.44),
    0 0 10px rgba(255, 230, 168, 0.3);
  transform: translateY(-50%);
}

.snake-row:not(:last-child)::after {
  position: absolute;
  z-index: 0;
  top: var(--timeline-axis-y);
  width: var(--connector-width);
  height: calc(100% + var(--snake-gap));
  content: "";
  border: 2px solid rgba(255, 230, 168, 0.62);
  pointer-events: none;
  transform: translateY(-1px);
  background:
    radial-gradient(circle at 50% 50%, transparent 58%, rgba(34, 211, 197, 0.12) 59%, transparent 64%),
    radial-gradient(circle at 50% 50%, transparent 68%, rgba(255, 230, 168, 0.16) 69%, transparent 72%);
  box-shadow:
    0 0 38px rgba(199, 168, 107, 0.34),
    0 0 18px rgba(255, 230, 168, 0.18),
    inset 0 0 0 6px rgba(34, 211, 197, 0.04);
}

.snake-row.is-forward:not(:last-child)::after {
  right: calc(var(--connector-width) / -1.18);
  border-left: 0;
  border-radius: 0 999px 999px 0;
}

.snake-row.is-reverse:not(:last-child)::after {
  left: calc(var(--connector-width) / -1.18);
  border-right: 0;
  border-radius: 999px 0 0 999px;
}

.video-card {
  position: relative;
  z-index: 1;
  min-width: 0;
  padding-top: var(--timeline-card-top);
  overflow: visible;
  direction: ltr;
  transform-origin: center;
  transition:
    transform 180ms ease;
}

.video-card::before,
.video-card::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.video-card::before {
  z-index: 3;
  top: var(--timeline-axis-y);
  left: 50%;
  width: 2px;
  height: calc(var(--timeline-card-top) - var(--timeline-axis-y) + 5px);
  background: linear-gradient(180deg, rgba(255, 230, 168, 0.98), rgba(255, 230, 168, 0.5));
  box-shadow: 0 0 16px rgba(199, 168, 107, 0.5);
  transform: translateX(-50%);
}

.video-card::after {
  z-index: 4;
  top: calc(var(--timeline-card-top) + 1px);
  left: 50%;
  width: 11px;
  height: 11px;
  border: 1px solid rgba(255, 230, 168, 0.72);
  border-radius: 50%;
  background: #ffe6a8;
  box-shadow:
    0 0 0 5px rgba(199, 168, 107, 0.12),
    0 0 22px rgba(255, 230, 168, 0.7);
  transform: translate(-50%, -50%);
}

.timeline-node {
  position: absolute;
  z-index: 5;
  top: var(--timeline-axis-y);
  left: 50%;
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 1px solid rgba(255, 230, 168, 0.78);
  border-radius: 50%;
  color: #ffe6a8;
  font-size: 14px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  background:
    radial-gradient(circle at 50% 45%, rgba(20, 26, 34, 0.98), rgba(7, 10, 15, 0.92)),
    linear-gradient(135deg, rgba(199, 168, 107, 0.28), rgba(34, 211, 197, 0.08));
  box-shadow:
    0 0 0 4px rgba(199, 168, 107, 0.1),
    0 0 28px rgba(255, 230, 168, 0.52),
    inset 0 0 18px rgba(34, 211, 197, 0.1);
  transform: translate(-50%, -50%);
}

.timeline-node::before,
.timeline-node::after {
  position: absolute;
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.timeline-node::before {
  inset: -7px;
  border: 1px solid rgba(199, 168, 107, 0.34);
  border-top-color: rgba(34, 211, 197, 0.66);
  border-bottom-color: transparent;
}

.timeline-node::after {
  inset: -14px;
  border: 1px solid rgba(255, 230, 168, 0.16);
  border-right-color: transparent;
  border-left-color: rgba(34, 211, 197, 0.32);
}

@media (hover: hover) and (pointer: fine) {
  .video-card:hover {
    z-index: 30;
    transform: scale(var(--hover-scale));
  }

  .video-card:hover .video-trigger {
    border-color: rgba(199, 168, 107, 0.72);
    box-shadow: 0 26px 86px rgba(0, 0, 0, 0.52), 0 0 42px rgba(31, 123, 255, 0.22);
  }
}

.video-card.is-hovered {
  z-index: 30;
  transform: scale(var(--hover-scale));
}

.video-card.is-hovered .video-trigger {
  border-color: rgba(199, 168, 107, 0.72);
  box-shadow: 0 26px 86px rgba(0, 0, 0, 0.52), 0 0 42px rgba(31, 123, 255, 0.22);
}

body.suppress-card-hover .video-card:hover,
body.suppress-card-hover .video-card.is-hovered {
  transform: none;
}

body.suppress-card-hover .video-card:hover .video-trigger,
body.suppress-card-hover .video-card.is-hovered .video-trigger {
  border-color: rgba(199, 168, 107, 0.18);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.24);
}

.video-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid rgba(199, 168, 107, 0.36);
  border-radius: 8px;
  overflow: hidden;
  color: inherit;
  text-align: left;
  background:
    linear-gradient(180deg, rgba(20, 26, 34, 0.88), rgba(7, 10, 15, 0.94)),
    rgba(20, 26, 34, 0.84);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.28),
    inset 0 0 34px rgba(199, 168, 107, 0.04);
  cursor: pointer;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.video-card.is-stock .video-trigger {
  border-color: rgba(34, 211, 197, 0.46);
  background:
    linear-gradient(180deg, rgba(17, 64, 78, 0.42), rgba(7, 10, 15, 0.94)),
    rgba(20, 26, 34, 0.84);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.28),
    inset 0 0 36px rgba(34, 211, 197, 0.08);
}

.video-card.is-insight .video-trigger {
  border-color: rgba(199, 168, 107, 0.52);
  background:
    linear-gradient(180deg, rgba(88, 66, 28, 0.42), rgba(7, 10, 15, 0.94)),
    rgba(20, 26, 34, 0.84);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.28),
    inset 0 0 36px rgba(199, 168, 107, 0.08);
}

.video-card.is-locked .video-trigger {
  border-color: rgba(217, 45, 32, 0.84);
  background:
    linear-gradient(180deg, rgba(86, 18, 18, 0.62), rgba(7, 10, 15, 0.96)),
    rgba(20, 26, 34, 0.88);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.34),
    0 0 24px rgba(217, 45, 32, 0.2),
    inset 0 0 40px rgba(217, 45, 32, 0.12);
}

.video-card.is-stock .video-trigger::before,
.video-card.is-insight .video-trigger::before {
  display: block;
  height: 3px;
  content: "";
}

.video-card.is-stock .video-trigger::before {
  background: linear-gradient(90deg, rgba(34, 211, 197, 0.18), rgba(34, 211, 197, 0.88), rgba(31, 123, 255, 0.44));
  box-shadow: 0 0 16px rgba(34, 211, 197, 0.36);
}

.video-card.is-insight .video-trigger::before {
  background: linear-gradient(90deg, rgba(199, 168, 107, 0.16), rgba(255, 230, 168, 0.9), rgba(199, 168, 107, 0.36));
  box-shadow: 0 0 16px rgba(199, 168, 107, 0.34);
}

.video-card.is-locked .video-trigger::before {
  background: linear-gradient(90deg, rgba(217, 45, 32, 0.22), rgba(255, 104, 92, 0.95), rgba(199, 168, 107, 0.4));
  box-shadow: 0 0 18px rgba(217, 45, 32, 0.46);
}

.clip-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 38%, rgba(34, 211, 197, 0.18), transparent 22%),
    linear-gradient(145deg, rgba(11, 31, 58, 0.9), rgba(7, 10, 15, 0.98));
}

.video-card.is-stock .clip-visual {
  background:
    radial-gradient(circle at 20% 56%, rgba(34, 211, 197, 0.48), transparent 5%, rgba(34, 211, 197, 0.14) 6%, transparent 28%),
    linear-gradient(120deg, rgba(34, 211, 197, 0.2), transparent 42%),
    linear-gradient(145deg, rgba(9, 38, 58, 0.98), rgba(7, 10, 15, 0.98));
}

.video-card.is-insight .clip-visual {
  background:
    radial-gradient(circle at 76% 36%, rgba(255, 230, 168, 0.28), transparent 6%, rgba(199, 168, 107, 0.14) 7%, transparent 30%),
    linear-gradient(120deg, rgba(199, 168, 107, 0.2), transparent 42%),
    linear-gradient(145deg, rgba(50, 38, 18, 0.86), rgba(7, 10, 15, 0.98));
}

.video-card.is-locked .clip-visual {
  background:
    radial-gradient(circle at 50% 46%, rgba(217, 45, 32, 0.42), transparent 7%, rgba(217, 45, 32, 0.16) 8%, transparent 36%),
    linear-gradient(120deg, rgba(217, 45, 32, 0.3), transparent 45%),
    linear-gradient(145deg, rgba(44, 8, 11, 0.96), rgba(7, 10, 15, 0.99));
}

.clip-visual video,
.clip-visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.clip-visual video {
  opacity: 0.06;
  filter: saturate(0.6) contrast(1.18);
}

.clip-visual img {
  opacity: 0.88;
  filter: saturate(0.9) contrast(1.08);
}

.video-card.is-locked .clip-visual img {
  opacity: 0.88;
  filter: saturate(1.15) contrast(1.12);
}

.video-card.is-image .clip-visual::before {
  background:
    linear-gradient(90deg, rgba(255, 230, 168, 0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(31, 123, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, transparent 52%, rgba(2, 4, 9, 0.46));
  background-size: 22px 22px, 22px 22px, auto;
}

.clip-visual::before,
.clip-visual::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.clip-visual::before {
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 230, 168, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(31, 123, 255, 0.1) 1px, transparent 1px);
  background-size: 22px 22px;
  mix-blend-mode: screen;
}

.clip-visual::after {
  inset: 15px 18px 17px;
  border: 1px solid rgba(34, 211, 197, 0.2);
  background:
    linear-gradient(135deg, transparent 46%, rgba(34, 211, 197, 0.42) 47%, transparent 49%),
    linear-gradient(15deg, transparent 55%, rgba(199, 168, 107, 0.46) 56%, transparent 58%);
  opacity: 0.9;
}

.clip-chart {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.clip-chart::before,
.clip-chart::after {
  position: absolute;
  content: "";
}

.clip-chart::before {
  right: 16px;
  bottom: 16px;
  width: 46%;
  height: 52%;
  opacity: 0.9;
  background:
    linear-gradient(90deg, transparent 0 10%, rgba(255, 230, 168, 0.66) 10% 16%, transparent 16% 24%, rgba(255, 230, 168, 0.36) 24% 31%, transparent 31% 41%, rgba(255, 230, 168, 0.82) 41% 48%, transparent 48% 58%, rgba(255, 230, 168, 0.5) 58% 65%, transparent 65% 75%, rgba(255, 230, 168, 0.94) 75% 82%, transparent 82%);
  mask-image: linear-gradient(0deg, #000 0 68%, transparent 68%);
}

.clip-chart::after {
  inset: 18px 18px 18px 18px;
  border-radius: 50%;
  opacity: 0.55;
  background:
    repeating-radial-gradient(circle at 50% 50%, rgba(34, 211, 197, 0.5) 0 1px, transparent 1px 22px),
    linear-gradient(90deg, transparent 49%, rgba(34, 211, 197, 0.5) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(34, 211, 197, 0.5) 50%, transparent 51%);
  clip-path: circle(32% at 62% 45%);
}

.video-card.is-stock .clip-chart::before {
  background:
    linear-gradient(90deg, transparent 0 8%, rgba(34, 211, 197, 0.72) 8% 14%, transparent 14% 22%, rgba(34, 211, 197, 0.42) 22% 30%, transparent 30% 40%, rgba(34, 211, 197, 0.86) 40% 47%, transparent 47% 56%, rgba(34, 211, 197, 0.58) 56% 64%, transparent 64% 74%, rgba(34, 211, 197, 0.98) 74% 81%, transparent 81%);
}

.play-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 230, 168, 0.66);
  border-radius: 50%;
  color: #eaffff;
  background: rgba(7, 10, 15, 0.74);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 34px rgba(199, 168, 107, 0.36), inset 0 0 20px rgba(34, 211, 197, 0.12);
}

.play-mark::before {
  width: 0;
  height: 0;
  margin-left: 4px;
  content: "";
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 13px solid currentColor;
}

.image-mark::before {
  width: 18px;
  height: 14px;
  margin: 0;
  border: 2px solid currentColor;
  border-radius: 3px;
}

.image-mark::after {
  position: absolute;
  width: 6px;
  height: 6px;
  content: "";
  border-top: 2px solid currentColor;
  border-left: 2px solid currentColor;
  transform: translate(6px, -6px);
}

.lock-mark {
  border-color: rgba(255, 118, 106, 0.82);
  color: #ffe6a8;
  background: rgba(28, 5, 7, 0.82);
  box-shadow:
    0 0 36px rgba(217, 45, 32, 0.42),
    inset 0 0 20px rgba(217, 45, 32, 0.18);
}

.lock-mark::before {
  width: 18px;
  height: 15px;
  margin: 5px 0 0;
  border: 2px solid currentColor;
  border-radius: 4px;
  background: transparent;
}

.lock-mark::after {
  position: absolute;
  top: 11px;
  left: 50%;
  width: 20px;
  height: 18px;
  content: "";
  border: 2px solid currentColor;
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  transform: translateX(-50%);
}

.lock-hint {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  display: grid;
  place-items: center;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(255, 230, 168, 0.34);
  border-radius: 6px;
  color: #ffe6a8;
  font-size: 12px;
  font-weight: 800;
  background: rgba(28, 5, 7, 0.68);
  box-shadow: 0 0 18px rgba(217, 45, 32, 0.24);
}

.clip-body {
  display: grid;
  gap: 10px;
  padding: 13px 14px 15px;
}

.clip-meta {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  color: var(--gray);
  font-size: 12px;
}

.clip-type {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 24px;
  padding: 0 9px;
  border: 1px solid rgba(34, 211, 197, 0.28);
  border-radius: 6px;
  color: var(--cyan);
  font-weight: 700;
  background: rgba(34, 211, 197, 0.08);
}

.video-card.is-insight .clip-type {
  border-color: rgba(199, 168, 107, 0.36);
  color: #ffe6a8;
  background: rgba(199, 168, 107, 0.1);
}

.video-card.is-locked .clip-type {
  border-color: rgba(255, 118, 106, 0.58);
  color: #ffe6a8;
  background: rgba(217, 45, 32, 0.16);
}

.video-card.is-stock .clip-title {
  color: #f1fbff;
}

.video-card.is-insight .clip-title {
  color: #fff4d8;
}

.video-card.is-locked .clip-title {
  color: #fff1e5;
}

.clip-title {
  min-height: 48px;
  margin: 0;
  color: #fff9e8;
  font-size: clamp(14px, 1.05vw, 17px);
  line-height: 1.45;
}

.clip-foot {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 7px;
  color: rgba(238, 243, 248, 0.62);
  font-size: 12px;
}

.clip-foot span + span::before {
  margin-right: 7px;
  color: rgba(199, 168, 107, 0.62);
  content: "·";
}

.sentinel {
  display: grid;
  place-items: center;
  min-height: 72px;
  color: rgba(238, 243, 248, 0.7);
  font-size: 15px;
  letter-spacing: 0.06em;
  text-align: center;
}

.sentinel::before,
.sentinel::after {
  display: inline-block;
  width: 70px;
  height: 1px;
  margin: 0 14px 4px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(255, 230, 168, 0.78));
}

.sentinel::after {
  background: linear-gradient(90deg, rgba(255, 230, 168, 0.78), transparent);
}

.player-dialog {
  width: 100vw;
  max-width: none;
  height: 100vh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--mist);
  background: #020409;
}

.player-dialog::backdrop {
  background: #020409;
}

.player-dialog[open] {
  display: grid;
  grid-template-rows: 1fr auto;
}

.player-dialog video,
.player-dialog img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  background: #020409;
}

.close-player {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(238, 243, 248, 0.24);
  border-radius: 50%;
  color: var(--mist);
  font-size: 28px;
  line-height: 1;
  background: rgba(7, 10, 15, 0.72);
  cursor: pointer;
}

.close-player:hover,
.close-player:focus-visible {
  border-color: rgba(199, 168, 107, 0.72);
  color: #ffe6a8;
  outline: none;
}

.player-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 0 clamp(16px, 3vw, 32px);
  border-top: 1px solid rgba(199, 168, 107, 0.16);
  color: rgba(238, 243, 248, 0.7);
  background: rgba(7, 10, 15, 0.9);
}

.player-meta span {
  color: var(--cyan);
  font-weight: 700;
}

.player-meta strong {
  color: #fff9e8;
}

@media (max-width: 1080px) {
  .showcase-head {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .showcase-visual {
    min-height: 360px;
  }

  .showcase-visual::before {
    right: 4%;
  }

  .showcase-visual .xinxin-host {
    right: 8%;
    width: min(38%, 260px);
  }

  .showcase-visual .radar {
    right: 12%;
  }

  .feature-panel {
    right: auto;
    left: 4%;
    width: min(260px, 42%);
  }

  .video-grid {
    --snake-gap: 44px;
    --timeline-axis-y: 30px;
    --timeline-card-top: 64px;
    padding-right: clamp(20px, 4vw, 44px);
    padding-left: clamp(20px, 4vw, 44px);
  }

  .snake-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    min-height: auto;
  }

  .snake-row::before,
  .snake-row:not(:last-child)::after {
    display: none;
  }

  .video-card {
    padding-top: 0;
  }

  .video-card::before,
  .video-card::after,
  .timeline-node {
    display: none;
  }
}

@media (max-width: 720px) {
  .topbar {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand span {
    font-size: 16px;
  }

  .nav-actions {
    gap: 4px;
    font-size: 13px;
  }

  .nav-actions a {
    padding-inline: 9px;
  }

  main {
    padding-right: 16px;
    padding-left: 16px;
  }

  .showcase {
    padding-top: 28px;
  }

  h1 {
    font-size: clamp(46px, 14vw, 64px);
  }

  .showcase-visual {
    min-height: 300px;
  }

  .showcase-visual .xinxin-host {
    right: 5%;
    width: min(52%, 220px);
  }

  .showcase-visual .radar {
    top: 18px;
    right: 6%;
    width: min(58%, 260px);
  }

  .showcase-visual .kline {
    left: 5%;
    width: min(68%, 300px);
  }

  .showcase-visual .flow {
    left: 4%;
    width: min(72%, 310px);
  }

  .feature-panel {
    display: none;
  }

  .filters {
    width: 100%;
    margin: 16px 0 0;
  }

  .filter-button {
    flex: 1;
  }

  .video-grid {
    gap: 20px;
    padding: 28px 0 0;
  }

  .snake-row,
  .snake-row.is-reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 20px;
  }

  .player-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 12px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .video-card:hover,
  .video-card.is-hovered {
    transform: none;
  }
}