/* ============================================================
   Adcore SDK — 暗色高级质感（玻璃拟态 / 深蓝光束）
   参考 UBiX / ADN-Plus 视觉语言
   ============================================================ */
:root {
  --bg0: #050b1e;
  --bg1: #0a1740;
  --bg2: #0d1f4f;
  --tint: rgba(255, 255, 255, .035);
  --tint-2: rgba(255, 255, 255, .055);
  --glass-line: rgba(255, 255, 255, .1);
  --glass-line-2: rgba(255, 255, 255, .18);
  --ink: #e8eefc;
  --ink-2: #9fb0d6;
  --ink-3: #64749b;
  --blue: #3b82f6;
  --cyan: #38bdf8;
  --grad: linear-gradient(135deg, #2f6bff 0%, #1d3fb8 100%);
  --grad-text: linear-gradient(92deg, #6aa5ff, #37e0ff);
  --shadow-lg: 0 24px 64px rgba(2, 8, 30, .55);
  --header-h: 72px;
  --container: 1200px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg0);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

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

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

.container-wide {
  width: min(1440px, calc(100% - 48px));
}

/* ---------- 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease, border-color .25s;
}

.btn-primary {
  background: linear-gradient(135deg, #2f6bff, #2450e0);
  color: #fff;
  box-shadow: 0 8px 28px rgba(47, 107, 255, .45);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(47, 107, 255, .6);
}

.btn-ghost {
  color: var(--ink);
  border: 1.5px solid var(--glass-line-2);
  background: rgba(255, 255, 255, .04);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, .45);
  background: rgba(255, 255, 255, .08);
}

.btn-light {
  background: #fff;
  color: #16306e;
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, .35);
}

.btn-outline {
  color: #cfe0ff;
  border: 1.5px solid rgba(255, 255, 255, .35);
  background: rgba(255, 255, 255, .05);
}

.btn-outline:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .6);
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-lg {
  height: 52px;
  padding: 0 34px;
  font-size: 16px;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 页头 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 999;
  height: var(--header-h);
  background: rgba(5, 11, 30, .55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease;
}

.site-header.scrolled {
  background: rgba(5, 11, 30, .85);
  border-bottom-color: rgba(255, 255, 255, .08);
}

.header-inner {
  width: min(1320px, calc(100% - 48px));
  margin-inline: auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

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

.nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav ul a {
  display: block;
  padding: 8px 15px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 999px;
  transition: color .2s, background .2s;
}

.nav ul a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .07);
}

.nav ul a.active {
  color: #fff;
  background: rgba(255, 255, 255, .1);
}

.nav-cta {
  margin-left: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-plain {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color .2s;
}

.btn-plain:hover {
  color: #fff;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--glass-line);
  background: rgba(255, 255, 255, .05);
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform .3s, opacity .3s;
}

.menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1100px 560px at 82% -12%, rgba(37, 99, 235, .5), transparent 62%),
    radial-gradient(900px 520px at -8% 108%, rgba(29, 78, 216, .4), transparent 60%),
    linear-gradient(165deg, #071230 0%, var(--bg1) 50%, #0a1c4e 100%);
  color: #fff;
  padding: calc(var(--header-h) + 76px) 0 130px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.beam {
  position: absolute;
  width: 140%;
  height: 420px;
  background: linear-gradient(90deg, transparent, rgba(120, 170, 255, .14), transparent);
  filter: blur(28px);
  transform: rotate(-18deg);
  animation: beamMove 9s ease-in-out infinite alternate;
}

.beam-a {
  top: 6%;
  left: -20%;
}

.beam-b {
  bottom: 2%;
  right: -30%;
  animation-delay: -4s;
  opacity: .7;
}

@keyframes beamMove {
  from {
    transform: rotate(-18deg) translateX(-6%);
  }

  to {
    transform: rotate(-14deg) translateX(6%);
  }
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(900px 560px at 62% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(900px 560px at 62% 30%, #000 20%, transparent 75%);
}

.dot {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #7db4ff;
  box-shadow: 0 0 12px 2px rgba(96, 165, 250, .8);
  opacity: .55;
  animation: dotFloat 7s ease-in-out infinite alternate;
}

.d1 { top: 22%; left: 8%; }
.d2 { top: 60%; left: 3%; width: 3px; height: 3px; animation-delay: -2s; }
.d3 { top: 34%; left: 44%; width: 4px; height: 4px; animation-delay: -1s; }
.d4 { top: 74%; left: 52%; animation-delay: -3s; }
.d5 { top: 16%; left: 70%; width: 3px; height: 3px; animation-delay: -5s; }
.d6 { top: 48%; left: 92%; width: 4px; height: 4px; animation-delay: -6s; }

@keyframes dotFloat {
  from {
    transform: translateY(-14px);
    opacity: .3;
  }

  to {
    transform: translateY(10px);
    opacity: .8;
  }
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  gap: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #cfe0ff;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(6px);
}

.hero-badge i {
  font-style: normal;
  font-size: 10px;
  color: #37e0ff;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .35;
  }
}

.hero h1 {
  margin: 24px 0 16px;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: .5px;
}

.hero-sub {
  font-size: clamp(15px, 1.5vw, 17px);
  color: rgba(214, 228, 255, .78);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 54px;
}

.hero-actions .arrow {
  transition: transform .25s;
}

.hero-actions .btn-ghost:hover .arrow {
  transform: translateX(4px);
}

/* 发光指标 */
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
}

.hm {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 30px 4px 0;
  margin-right: 30px;
  border-right: 1px solid rgba(255, 255, 255, .12);
}

.hm:last-child {
  border-right: 0;
  margin-right: 0;
  padding-right: 0;
}

.hm svg {
  width: 34px;
  height: 34px;
  color: #5eb8ff;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, .55));
}

.hm strong {
  display: block;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(90deg, #fff, #9cc2ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}

.hm span {
  font-size: 13px;
  color: rgba(190, 208, 245, .65);
  letter-spacing: .5px;
}

/* Hero 视觉：层叠玻璃栈 */
.hero-visual {
  position: relative;
  height: 470px;
  perspective: 1000px;
}

.stack {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.layer {
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 40px;
  background: linear-gradient(145deg, rgba(96, 165, 250, .14), rgba(30, 64, 175, .1));
  border: 1.5px solid rgba(140, 180, 255, .35);
  box-shadow:
    0 0 44px rgba(59, 130, 246, .25),
    inset 0 0 32px rgba(96, 165, 250, .12);
  transform: rotateX(58deg) rotateZ(-45deg);
  animation: stackFloat 6s ease-in-out infinite;
}

.layer.l5 { transform: translateY(-92px) rotateX(58deg) rotateZ(-45deg); opacity: .32; }
.layer.l4 { transform: translateY(-56px) rotateX(58deg) rotateZ(-45deg); opacity: .48; }
.layer.l3 { transform: translateY(-20px) rotateX(58deg) rotateZ(-45deg); opacity: .64; }
.layer.l2 { transform: translateY(16px) rotateX(58deg) rotateZ(-45deg); opacity: .82; }
.layer.l1 {
  transform: translateY(52px) rotateX(58deg) rotateZ(-45deg);
  background: linear-gradient(145deg, rgba(120, 170, 255, .28), rgba(37, 99, 235, .18));
  animation-delay: -3s;
}

/* 底层上的品牌徽标（不做 3D 变换，保持端正） */
.stack-badge {
  position: absolute;
  left: 50%;
  bottom: 21%;
  transform: translateX(-50%);
  width: 104px;
  height: 104px;
  color: #cfe6ff;
  filter: drop-shadow(0 0 20px rgba(56, 189, 248, .75));
  display: grid;
  place-items: center;
  animation: chipFloat 6s ease-in-out infinite;
}

.stack-badge svg {
  width: 100%;
  height: 100%;
}

@keyframes stackFloat {

  0%,
  100% {
    translate: 0 0;
  }

  50% {
    translate: 0 -10px;
  }
}

.float-chip {
  position: absolute;
  z-index: 3;
  padding: 10px 18px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 600;
  color: #eaf2ff;
  background: rgba(13, 31, 79, .8);
  border: 1px solid rgba(140, 180, 255, .28);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(2, 8, 30, .5);
  animation: chipFloat 7s ease-in-out infinite;
}

.chip-a { top: 6%; left: 0; }
.chip-b { bottom: 16%; right: -2%; animation-delay: -2.5s; }
.chip-c { top: 44%; left: -6%; animation-delay: -4.5s; font-size: 13px; }

@keyframes chipFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-14px);
  }
}

/* ---------- 通用 Section ---------- */
.section {
  position: relative;
  padding: 96px 0;
}

/* 轻微的区段明暗节奏 */
.section-tint {
  background:
    radial-gradient(900px 400px at 50% 0%, rgba(37, 99, 235, .08), transparent 70%),
    #071230;
}

.section + .section-tint,
.section-tint + .section {
  border-top: 1px solid rgba(255, 255, 255, .05);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #6aa5ff;
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  color: #fff;
}

.section-head h2 em {
  font-style: normal;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-head p {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 16px;
}

/* ---------- 智能决策引擎 ---------- */
.flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 22px;
  margin-bottom: 28px;
}

.flow-card {
  position: relative;
  width: 220px;
  padding: 30px 20px 26px;
  text-align: center;
  border-radius: 20px;
  background: var(--tint);
  border: 1px solid var(--glass-line);
  transition: transform .3s, border-color .3s, background .3s;
}

.flow-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-line-2);
}

.flow-card .flow-icon svg {
  width: 46px;
  height: 46px;
  color: #8ec2ff;
  filter: drop-shadow(0 0 10px rgba(96, 165, 250, .4));
}

.flow-card strong {
  display: block;
  margin-top: 14px;
  font-size: 19px;
  color: #fff;
}

.flow-card span {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--ink-3);
  letter-spacing: .5px;
}

.flow-core {
  flex: 0 0 300px;
  background:
    radial-gradient(300px 180px at 50% 30%, rgba(59, 130, 246, .22), transparent 70%),
    rgba(13, 31, 79, .65);
  border: 1.5px solid rgba(120, 170, 255, .4);
  box-shadow: 0 0 50px rgba(59, 130, 246, .28);
}

.flow-core-layers {
  position: relative;
  height: 74px;
  margin-top: 6px;
}

.flow-core-layers i {
  position: absolute;
  left: 50%;
  width: 92px;
  height: 26px;
  border-radius: 8px;
  border: 1.5px solid rgba(140, 190, 255, .55);
  background: linear-gradient(145deg, rgba(120, 170, 255, .3), rgba(37, 99, 235, .16));
  box-shadow: 0 0 18px rgba(96, 165, 250, .35);
  transform: translateX(-50%) rotateX(58deg) rotateZ(-45deg);
}

.flow-core-layers i:nth-child(1) { top: 34px; }
.flow-core-layers i:nth-child(2) { top: 22px; opacity: .8; }
.flow-core-layers i:nth-child(3) { top: 10px; opacity: .6; }
.flow-core-layers i:nth-child(4) { top: -2px; opacity: .4; }

.flow-arrow {
  align-self: center;
  color: #4f7fe0;
  font-size: 24px;
  filter: drop-shadow(0 0 8px rgba(59, 130, 246, .6));
}

/* 引擎卡片 */
.engine-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.glass-card {
  background: var(--tint);
  border: 1px solid var(--glass-line);
  border-radius: 20px;
  padding: 26px 26px 22px;
  transition: transform .3s, border-color .3s, background .3s, box-shadow .3s;
}

.glass-card:hover {
  transform: translateY(-6px);
  background: var(--tint-2);
  border-color: var(--glass-line-2);
  box-shadow: var(--shadow-lg);
}

.gc-head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.gc-ico {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 24px;
  background: rgba(59, 130, 246, .14);
  border: 1px solid rgba(59, 130, 246, .3);
}

.gc-head h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 6px;
}

.gc-head p {
  font-size: 14px;
  color: var(--ink-2);
}

.gc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.gc-tags span {
  font-size: 12.5px;
  color: #9fd0ff;
  background: rgba(59, 130, 246, .1);
  border: 1px solid rgba(59, 130, 246, .25);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ---------- 聚合管理 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--tint);
  border: 1px solid var(--glass-line);
  border-radius: 20px;
  padding: 28px 24px;
  transition: transform .3s, border-color .3s, background .3s, box-shadow .3s;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--tint-2);
  border-color: rgba(59, 130, 246, .45);
  box-shadow: 0 16px 44px rgba(37, 99, 235, .18);
}

.fc-ico {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: #6aa5ff;
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .28);
}

.fc-ico svg {
  width: 30px;
  height: 30px;
}

.feature-card h3 {
  font-size: 16.5px;
  color: #fff;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 13.5px;
  color: var(--ink-2);
}

/* ---------- 数据洞察 ---------- */
.insight-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 56px;
  align-items: center;
}

.insight-copy h2 {
  font-size: clamp(26px, 3vw, 36px);
  color: #fff;
  margin-bottom: 24px;
}

.insight-list {
  margin-bottom: 32px;
}

.insight-list li {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  color: var(--ink-2);
  font-size: 15px;
}

.insight-list i {
  font-style: normal;
  color: #37e0ff;
  font-weight: 700;
}

/* CSS 数据看板 */
.dashboard {
  position: relative;
  background: linear-gradient(160deg, rgba(20, 42, 96, .9), rgba(10, 23, 64, .92));
  border: 1.5px solid rgba(120, 170, 255, .28);
  border-radius: 22px;
  padding: 20px 22px 24px;
  box-shadow:
    0 30px 70px rgba(2, 8, 30, .6),
    0 0 60px rgba(37, 99, 235, .16),
    inset 0 1px 0 rgba(255, 255, 255, .08);
}

.dashboard::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 23px;
  padding: 1.5px;
  background: linear-gradient(120deg, rgba(96, 165, 250, .5), transparent 30%, transparent 70%, rgba(56, 189, 248, .4));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.db-top {
  display: flex;
  align-items: center;
  gap: 7px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.db-top i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .16);
}

.db-top i:nth-child(1) { background: #ff5f57; }
.db-top i:nth-child(2) { background: #febc2e; }
.db-top i:nth-child(3) { background: #28c840; }

.db-top span {
  margin-left: 10px;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 1px;
}

.db-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 18px 0;
}

.db-kpi {
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 14px;
  padding: 12px 14px;
}

.db-kpi span {
  display: block;
  font-size: 12px;
  color: var(--ink-3);
  margin-bottom: 4px;
}

.db-kpi strong {
  display: block;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

.db-kpi em {
  font-style: normal;
  font-size: 11.5px;
  color: #34d399;
}

.db-chart {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 14px;
  align-items: stretch;
}

.db-chart svg {
  width: 100%;
  height: 110px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 14px;
}

.db-bars {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 14px;
  padding: 14px 12px 0;
}

.db-bars i {
  flex: 1;
  height: var(--h);
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, #5eb8ff, rgba(47, 107, 255, .35));
  animation: barGrow 1.4s ease both;
  transform-origin: bottom;
}

.db-bars i:nth-child(2n) {
  background: linear-gradient(180deg, #7dd3fc, rgba(14, 116, 144, .35));
}

@keyframes barGrow {
  from {
    transform: scaleY(0);
  }

  to {
    transform: scaleY(1);
  }
}

/* ---------- 广告形态（居中左右滑动） ---------- */
.fmt {
  --card-w: 250px;
  --gap: 40px;
  --shot-h: 430px;
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
}

.fmt-viewport {
  position: relative;
  overflow: hidden;
  height: calc(var(--shot-h) + 52px);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 5%, #000 95%, transparent 100%);
}

.fmt-track {
  display: flex;
  align-items: flex-end;
  gap: var(--gap);
  height: 100%;
  will-change: transform;
  transition: transform .68s cubic-bezier(.32, .72, .14, 1);
  cursor: grab;
  touch-action: pan-y;
  -webkit-user-select: none;
  user-select: none;
}

.fmt-track.is-dragging {
  transition: none;
  cursor: grabbing;
}

.fmt-track.is-dragging .fmt-card {
  cursor: grabbing;
}

.fmt-card {
  position: relative;
  flex: 0 0 var(--card-w);
  width: var(--card-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  opacity: .32;
  transform: scale(.87);
  transform-origin: bottom center;
  transition: opacity .55s ease, transform .6s cubic-bezier(.32, .72, .14, 1);
  cursor: pointer;
}

.fmt-card::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 26px;
  width: 340px;
  height: 340px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(47, 107, 255, .4), rgba(47, 107, 255, 0) 66%);
  filter: blur(14px);
  opacity: 0;
  transition: opacity .6s ease;
  pointer-events: none;
}

.fmt-card.is-active {
  opacity: 1;
  transform: scale(1);
}

.fmt-card.is-active::before {
  opacity: 1;
}

.fmt-shot {
  position: relative;
  z-index: 1;
  height: var(--shot-h);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.fmt-shot img {
  height: 100%;
  width: auto;
  max-width: none;
  object-fit: contain;
  filter: drop-shadow(0 26px 46px rgba(2, 8, 30, .72));
  pointer-events: none;
  -webkit-user-drag: none;
}

.fmt-card.is-active .fmt-shot img {
  animation: fmtFloat 6s ease-in-out infinite;
}

@keyframes fmtFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-9px);
  }
}

.fmt-name {
  position: relative;
  z-index: 1;
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ink-3);
  white-space: nowrap;
  transition: color .4s ease;
}

.fmt-card.is-active .fmt-name {
  color: #dbe8ff;
}

/* 当前样式说明 */
.fmt-caption {
  max-width: 620px;
  margin: 26px auto 0;
  text-align: center;
  padding: 0 12px;
}

.fmt-caption.swap {
  animation: fmtCapIn .55s cubic-bezier(.32, .72, .14, 1) both;
}

.fmt-caption h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .01em;
}

.fmt-caption h3::after {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  margin: 12px auto 0;
  border-radius: 2px;
  background: var(--grad-text);
}

.fmt-caption p {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

@keyframes fmtCapIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 控制条 */
.fmt-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: 26px;
}

.fmt-arrow {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--glass-line-2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background .3s, border-color .3s, box-shadow .3s, transform .2s, color .3s;
}

.fmt-arrow svg {
  width: 18px;
  height: 18px;
}

.fmt-arrow:hover {
  color: #fff;
  background: rgba(47, 107, 255, .3);
  border-color: rgba(120, 170, 255, .6);
  box-shadow: 0 10px 26px rgba(47, 107, 255, .38);
}

.fmt-arrow:active {
  transform: scale(.93);
}

.fmt-dots {
  display: flex;
  align-items: center;
  gap: 9px;
}

.fmt-dot {
  width: 7px;
  height: 7px;
  border-radius: 99px;
  background: rgba(255, 255, 255, .22);
  transition: width .4s cubic-bezier(.32, .72, .14, 1), background .4s;
}

.fmt-dot:hover {
  background: rgba(255, 255, 255, .45);
}

.fmt-dot.is-active {
  width: 24px;
  background: linear-gradient(92deg, #4f8bff, #37e0ff);
}

/* ---------- 生态合作 ---------- */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.lw-item {
  min-width: 0;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--glass-line);
  border-radius: 16px;
  aspect-ratio: 2.4 / 1;
  display: grid;
  place-items: center;
  padding: 16px 22px;
  transition: transform .3s, border-color .3s, background .3s;
}

.lw-item:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, .45);
  background: rgba(255, 255, 255, .07);
}

.lw-item img {
  max-width: 82%;
  max-height: 62%;
  object-fit: contain;
  /* logo 原图为彩色，深色底上加白垫底更清晰 */
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
}

.lw-more {
  font-size: 13.5px;
  color: var(--ink-3);
  text-align: center;
  line-height: 1.7;
}

.platform-strip {
  margin-top: 76px;
  padding-top: 48px;
  text-align: center;
  border-top: 1px solid var(--glass-line);
}

.ps-head {
  margin-bottom: 26px;
}

.ps-head .section-tag {
  display: inline-block;
  margin-bottom: 10px;
}

.ps-head h3 {
  font-size: 20px;
  font-weight: 600;
}

.ps-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.ps-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 22px 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--ink-2);
  background: var(--tint);
  border: 1px solid var(--glass-line);
  transition: color .25s, border-color .25s, transform .25s, box-shadow .25s;
}

.ps-ico {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  color: #a9c4f5;
  transition: color .25s, transform .25s;
}

.ps-ico svg {
  width: 100%;
  height: 100%;
  display: block;
}

.ps-item:hover {
  color: #fff;
  border-color: rgba(59, 130, 246, .5);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(47, 107, 255, .25);
}

.ps-item:hover .ps-ico {
  color: #6aa5ff;
  transform: scale(1.08);
}

/* ---------- CTA ---------- */
.cta {
  padding: 20px 0 100px;
}

.cta-inner {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 64px 40px;
  border-radius: 28px;
  background:
    radial-gradient(600px 300px at 50% -20%, rgba(96, 165, 250, .35), transparent 65%),
    linear-gradient(135deg, #10265e 0%, #0a1740 100%);
  border: 1.5px solid rgba(120, 170, 255, .3);
  box-shadow: 0 30px 80px rgba(2, 8, 30, .55);
}

.cta-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  left: 50%;
  top: -260px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(56, 189, 248, .3), transparent 65%);
  filter: blur(30px);
  pointer-events: none;
}

.cta h2 {
  position: relative;
  font-size: clamp(24px, 3vw, 34px);
  color: #fff;
  margin-bottom: 10px;
}

.cta p {
  position: relative;
  color: var(--ink-2);
  margin-bottom: 32px;
}

.cta-actions {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #04091a;
  border-top: 1px solid rgba(255, 255, 255, .06);
  color: #8b98b8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.3fr;
  gap: 40px;
  padding: 60px 0 44px;
}

.logo-footer img {
  height: 34px;
  width: auto;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: #66738f;
  max-width: 340px;
}

.footer-col h4 {
  color: #dfe8fb;
  font-size: 15px;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: #66738f;
  padding: 6px 0;
  transition: color .2s;
}

.footer-col a:hover {
  color: #6aa5ff;
}

.footer-bar {
  border-top: 1px solid rgba(255, 255, 255, .06);
  text-align: center;
  padding: 22px 16px;
  font-size: 13px;
  color: #4d5a75;
}

.footer-bar a:hover {
  color: #6aa5ff;
}

/* ---------- 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {

  .reveal,
  .float-chip,
  .beam,
  .dot,
  .layer,
  .db-bars i {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .layer {
    transform: rotateX(58deg) rotateZ(-45deg) !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .logo-wall {
    grid-template-columns: repeat(4, 1fr);
  }

  .formats-slider {
    padding: 0 44px;
  }

  .format-card {
    width: 270px;
  }

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

  .hero-visual {
    display: none;
  }

  .hero {
    padding-bottom: 96px;
  }

  .insight-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .flow {
    flex-wrap: wrap;
  }

  .flow-arrow {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --header-h: 62px;
  }

  .logo img {
    height: 32px;
  }

  .container {
    width: calc(100% - 36px);
  }

  .header-inner {
    width: calc(100% - 36px);
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #071230;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    box-shadow: 0 20px 40px rgba(2, 8, 30, .6);
    padding: 12px 18px 20px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform .3s, opacity .3s, visibility .3s;
  }

  .nav.open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav ul a {
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 16px;
  }

  .nav-cta {
    margin: 12px 0 0;
  }

  .nav-cta .btn {
    flex: 1;
  }

  .section {
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .hero {
    padding: calc(var(--header-h) + 44px) 0 72px;
  }

  .hero-metrics {
    gap: 0;
  }

  .hm {
    padding-right: 18px;
    margin-right: 18px;
  }

  .hm svg {
    display: none;
  }

  .feature-grid,
  .db-kpis {
    grid-template-columns: repeat(2, 1fr);
  }

  .logo-wall {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  /* 移动端：一屏约 1.5 张，两侧露出提示可滑 */
  .fmt {
    --card-w: 194px;
    --gap: 20px;
    --shot-h: 330px;
  }

  .fmt-caption {
    margin-top: 20px;
    padding: 0;
  }

  .fmt-caption h3 {
    font-size: 18px;
  }

  .fmt-caption h3::after {
    margin-top: 10px;
  }

  .fmt-caption p {
    margin-top: 11px;
    font-size: 13.5px;
    line-height: 1.7;
  }

  .fmt-controls {
    margin-top: 22px;
    gap: 16px;
  }

  .fmt-arrow {
    width: 40px;
    height: 40px;
  }

  .fmt-card::before {
    width: 260px;
    height: 260px;
  }

  .fmt-name {
    margin-top: 12px;
    font-size: 12px;
  }

  .platform-strip {
    margin-top: 56px;
    padding-top: 36px;
  }

  .ps-item {
    padding: 9px 18px 9px 15px;
    font-size: 13px;
    gap: 8px;
  }

  .ps-ico {
    width: 17px;
    height: 17px;
  }

  .cta-inner {
    padding: 44px 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 44px 0 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .hero h1 {
    font-size: 30px;
  }

  .hero-actions .btn-lg {
    width: 100%;
  }

  .hero-metrics {
    flex-wrap: wrap;
    gap: 12px 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .logo-wall {
    grid-template-columns: repeat(2, 1fr);
  }

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