/* ========== 全局变量 ========== */
:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #4338CA;
  --color-secondary: #7C3AED;
  --color-accent: #06B6D4;
  --color-gradient-start: #4F46E5;
  --color-gradient-end: #7C3AED;
  --color-bg: #ffffff;
  --color-bg-alt: #F9FAFB;
  --color-bg-dark: #1F2A37;
  --color-bg-darker: #111827;
  --color-text: #111827;
  --color-text-secondary: #4B5563;
  --color-text-muted: #6B7280;
  --color-text-light: #D1D5DB;
  --color-text-white: #ffffff;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --radius-sm: 6px;
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --container-max: 1200px;
  --container-padding: 24px;
  --section-padding: 96px;
  --section-padding-md: 72px;
  --section-padding-sm: 48px;
  --transition-fast: 150ms ease;
  --transition: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
}

input {
  font-family: inherit;
  font-size: inherit;
}

/* ========== 通用容器 ========== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ========== 通用按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 12px 24px;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-lg {
  font-size: 16px;
  padding: 16px 32px;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
  color: var(--color-text-white);
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px 0 rgba(79, 70, 229, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-text-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.btn-icon {
  flex-shrink: 0;
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
}

.logo-icon rect {
  fill: url(#logoGrad);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-primary);
  background: rgba(79, 70, 229, 0.06);
}

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

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.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);
}

/* ========== 英雄区 ========== */
.hero {
  position: relative;
  padding-top: 140px;
  padding-bottom: 120px;
  overflow: hidden;
  color: var(--color-text);
}

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

.hero-bg-image {
  position: absolute;
  inset: 0;
  background-image: url('../image/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.35;
  filter: saturate(1.1) contrast(1.05);
  animation: heroBgZoom 20s ease-in-out infinite alternate;
}

@keyframes heroBgZoom {
  0%   { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.12) translate(-1%, -1%); }
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.78) 45%, rgba(255,255,255,0.5) 100%);
}

.hero-gradient {
  position: absolute;
  top: -20%;
  right: -15%;
  width: 75%;
  height: 85%;
  background: radial-gradient(ellipse at 70% 30%, rgba(79, 70, 229, 0.18) 0%, rgba(124, 58, 237, 0.08) 35%, transparent 70%);
  mix-blend-mode: multiply;
  animation: heroGradientShift 14s ease-in-out infinite alternate;
}

@keyframes heroGradientShift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-4%, 3%) scale(1.05); }
  100% { transform: translate(2%, -2%) scale(1.02); }
}

.hero-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 70, 229, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 70, 229, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
}

/* ---------- 科研装饰漂浮元素 ---------- */
.hero-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.decor-float {
  position: absolute;
  opacity: 0.8;
  will-change: transform;
}

.decor-float svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 12px rgba(79, 70, 229, 0.12));
}

.decor-1 {
  top: 16%;
  left: 6%;
  width: 90px;
  height: 90px;
  animation: decorFloat 9s ease-in-out infinite;
}

.decor-2 {
  top: 62%;
  left: 2%;
  width: 120px;
  height: 60px;
  animation: decorFloat 11s ease-in-out 1s infinite;
}

.decor-3 {
  top: 12%;
  right: 42%;
  width: 54px;
  height: 54px;
  animation: decorFloat 8s ease-in-out 0.5s infinite;
}

.decor-4 {
  top: 75%;
  right: 20%;
  width: 140px;
  height: 28px;
  animation: decorFloat 10s ease-in-out 1.5s infinite;
}

.decor-5 {
  top: 35%;
  right: 3%;
  width: 64px;
  height: 64px;
  animation: decorFloat 12s ease-in-out 0.8s infinite;
}

@keyframes decorFloat {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(8px, -14px) rotate(3deg);
  }
  50% {
    transform: translate(-4px, -24px) rotate(-2deg);
  }
  75% {
    transform: translate(-10px, -10px) rotate(2deg);
  }
}

/* 发光粒子层 */
.decor-particles {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 30%, rgba(79,70,229,0.25) 0, transparent 3px),
    radial-gradient(circle at 28% 75%, rgba(124,58,237,0.22) 0, transparent 2.5px),
    radial-gradient(circle at 55% 20%, rgba(6,182,212,0.2) 0, transparent 2px),
    radial-gradient(circle at 72% 55%, rgba(79,70,229,0.22) 0, transparent 2.5px),
    radial-gradient(circle at 85% 80%, rgba(16,185,129,0.18) 0, transparent 2px),
    radial-gradient(circle at 40% 50%, rgba(124,58,237,0.15) 0, transparent 2px),
    radial-gradient(circle at 90% 25%, rgba(6,182,212,0.18) 0, transparent 2px),
    radial-gradient(circle at 8% 60%, rgba(79,70,229,0.2) 0, transparent 2.5px);
  animation: particlesTwinkle 6s ease-in-out infinite alternate;
  opacity: 0.9;
}

@keyframes particlesTwinkle {
  0%   { opacity: 0.55; transform: translateY(0); }
  100% { opacity: 1;    transform: translateY(-8px); }
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 620px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: 56px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats-inline {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.stat-mini {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-mini strong {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}

.stat-mini span {
  font-size: 13px;
  color: var(--color-text-muted);
}

.stat-mini-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* Hero 视觉卡片 */
.hero-visual {
  position: relative;
  min-height: 480px;
}

.hero-card {
  background: var(--color-text-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
}

.hero-card-main {
  width: 100%;
  border: 1px solid var(--color-border-light);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-bg-alt);
}

.card-dots {
  display: flex;
  gap: 6px;
}

.card-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #E5E7EB;
}

.card-dots span:nth-child(1) { background: #EF4444; }
.card-dots span:nth-child(2) { background: #F59E0B; }
.card-dots span:nth-child(3) { background: #10B981; }

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.card-body {
  padding: 24px;
}

.data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.data-item {
  padding: 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}

.data-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.data-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
}

.data-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 32px;
}

.data-chart span {
  flex: 1;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  border-radius: 2px 2px 0 0;
  opacity: 0.8;
  min-width: 3px;
  animation: chartGrow 1.5s ease-out forwards;
  transform-origin: bottom;
}

.data-chart span:nth-child(1) { animation-delay: 0.05s; }
.data-chart span:nth-child(2) { animation-delay: 0.1s; }
.data-chart span:nth-child(3) { animation-delay: 0.15s; }
.data-chart span:nth-child(4) { animation-delay: 0.2s; }
.data-chart span:nth-child(5) { animation-delay: 0.25s; }
.data-chart span:nth-child(6) { animation-delay: 0.3s; }
.data-chart span:nth-child(7) { animation-delay: 0.35s; }
.data-chart span:nth-child(8) { animation-delay: 0.4s; }

@keyframes chartGrow {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.data-item:nth-child(1) .data-chart span {
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
}

/* 浮动卡片 */
.hero-card-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border-light);
}

.float-1 {
  top: 40px;
  left: -40px;
  animation: float 5s ease-in-out infinite;
  animation-delay: 0.5s;
}

.float-2 {
  bottom: 60px;
  right: -30px;
  animation: float 7s ease-in-out infinite;
  animation-delay: 1s;
}

.float-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: rgba(79, 70, 229, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.float-icon.success {
  background: rgba(16, 185, 129, 0.1);
}

.float-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.float-sub {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ========== 合作伙伴（升级版） ========== */
.partners {
  position: relative;
  overflow: hidden;
  padding: 80px 0 64px;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
  background:
    radial-gradient(ellipse at top, rgba(79,70,229,0.06), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(14,165,233,0.06), transparent 60%),
    var(--color-bg-alt);
}

/* ========== 背景装饰 ========== */
.partners-decor {
  position: absolute;
  border-radius: 50%;
  filter: blur(50px);
  opacity: 0.7;
  pointer-events: none;
  z-index: 0;
}
.partners-decor-1 {
  top: -80px;
  left: -100px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(79,70,229,0.25), transparent 70%);
}
.partners-decor-2 {
  bottom: -80px;
  right: -100px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(14,165,233,0.22), transparent 70%);
}

/* 漂浮装饰元素 */
.partners-floater {
  position: absolute;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  animation: float-y 8s ease-in-out infinite;
}
.partners-floater-hex {
  top: 15%;
  right: 6%;
  width: 64px;
  height: 64px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64' fill='none'><polygon points='32,4 58,18 58,46 32,60 6,46 6,18' stroke='%234F46E5' stroke-width='2' fill='rgba(79,70,229,0.06)'/></svg>") center/contain no-repeat;
  animation-delay: 0s;
}
.partners-floater-dna {
  bottom: 20%;
  left: 4%;
  width: 56px;
  height: 80px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 56 80' fill='none'><path d='M14 4 C24 16, 42 16, 42 4 M14 40 C24 52, 42 52, 42 40 M14 76 C24 64, 42 64, 42 76' stroke='%237C3AED' stroke-width='2' fill='none' stroke-linecap='round'/><path d='M14 20 L42 20 M14 60 L42 60' stroke='%2306B6D4' stroke-width='1.5' stroke-linecap='round' stroke-dasharray='3,3'/></svg>") center/contain no-repeat;
  animation-delay: 2s;
}
.partners-floater-star {
  top: 50%;
  right: 12%;
  width: 44px;
  height: 44px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 44 44' fill='none'><path d='M22 4 L26 18 L40 18 L28 28 L32 42 L22 32 L12 42 L16 28 L4 18 L18 18 Z' stroke='%23F59E0B' stroke-width='1.5' fill='rgba(245,158,11,0.1)'/></svg>") center/contain no-repeat;
  animation-delay: 4s;
}
@keyframes float-y {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-18px) rotate(4deg); }
}

/* ========== 合作伙伴 section 通用容器层级 ========== */
.partners .container {
  position: relative;
  z-index: 1;
}

/* ========== 1. 头部统计信息 ========== */
.partners-header {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 56px;
}
.partners-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  background: rgba(79,70,229,0.08);
  border: 1px solid rgba(79,70,229,0.15);
  margin-bottom: 20px;
}
.partners-label-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(79,70,229,0.15);
}
.partners-title {
  font-size: 42px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 16px;
  background: linear-gradient(135deg, var(--color-text) 0%, #4F46E5 50%, #06B6D4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.partners-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin: 0 0 24px;
  max-width: 560px;
}
.partners-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.partners-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border-light);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: all var(--transition);
}
.partners-cat:hover {
  transform: translateY(-2px);
  border-color: rgba(79,70,229,0.3);
  box-shadow: 0 6px 16px rgba(79,70,229,0.1);
  color: var(--color-primary);
}
.partners-cat svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* 右侧大数字卡片 */
.partners-big-stat {
  position: relative;
  background: linear-gradient(135deg, #ffffff 0%, rgba(248,250,252,1) 100%);
  border: 1px solid rgba(79,70,229,0.18);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  text-align: center;
  overflow: hidden;
  box-shadow:
    0 20px 40px -20px rgba(79,70,229,0.25),
    0 0 0 1px rgba(255,255,255,0.8) inset;
}
.partners-big-stat-ring {
  position: absolute;
  top: -40%;
  left: -20%;
  width: 140%;
  height: 180%;
  border-radius: 50%;
  background:
    conic-gradient(from 0deg,
      rgba(79,70,229,0.18) 0deg,
      rgba(6,182,212,0.18) 120deg,
      rgba(124,58,237,0.18) 240deg,
      rgba(79,70,229,0.18) 360deg);
  filter: blur(40px);
  opacity: 0.7;
  animation: spin-ring 18s linear infinite;
  pointer-events: none;
}
@keyframes spin-ring {
  to { transform: rotate(360deg); }
}
.partners-big-stat-number {
  position: relative;
  font-size: 72px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #06B6D4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
}
.partners-big-stat-label {
  position: relative;
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 14px;
}
.partners-big-stat-trend {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: #10B981;
  background: rgba(16,185,129,0.1);
  border-radius: 999px;
}

/* ========== 2. 滚动 Logo 墙 ========== */
.partners-marquee {
  margin-bottom: 28px;
}
.partners-marquee-alt {
  margin-bottom: 56px;
}
.partners-marquee-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--color-border-light);
  border-radius: 999px;
  margin: 0 0 14px 8px;
}
.partners-marquee-label svg { color: var(--color-primary); }

.partners-marquee-track {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
}
.partners-marquee-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: max-content;
  animation: marquee-left 40s linear infinite;
}
.partners-marquee-track[data-dir="right"] .partners-marquee-inner {
  animation-name: marquee-right;
  animation-duration: 48s;
}
.partners-marquee-track:hover .partners-marquee-inner {
  animation-play-state: paused;
}
@keyframes marquee-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes marquee-right {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  padding: 14px 22px;
  min-width: 180px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  transition: all 0.3s ease;
  white-space: nowrap;
}
.marquee-item:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: rgba(79,70,229,0.3);
  background: linear-gradient(135deg, #ffffff 0%, rgba(79,70,229,0.04) 100%);
  box-shadow: 0 12px 24px -12px rgba(79,70,229,0.25);
  color: var(--color-primary);
}
.marquee-item.alt {
  background: linear-gradient(135deg, #ffffff 0%, rgba(248,250,252,1) 100%);
  border-color: rgba(14,165,233,0.15);
}
.marquee-item.alt:hover {
  border-color: rgba(14,165,233,0.35);
  background: linear-gradient(135deg, #ffffff 0%, rgba(14,165,233,0.05) 100%);
  box-shadow: 0 12px 24px -12px rgba(14,165,233,0.25);
  color: #0284c7;
}

/* ========== 4. 合作成果卡片 ========== */
.partners-impact {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.impact-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: 28px 28px 24px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.impact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-1, #4F46E5), var(--accent-2, #7C3AED));
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: left;
  transition: all 0.4s ease;
}
.impact-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -16px rgba(0,0,0,0.12);
  border-color: rgba(79,70,229,0.2);
}
.impact-card:hover::before {
  opacity: 1;
  transform: scaleX(1);
}
.impact-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
}
.impact-card-icon::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: inherit;
  opacity: 0.2;
  filter: blur(8px);
  z-index: -1;
}
.impact-card-icon-1 {
  background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
}
.impact-card-icon-2 {
  background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
}
.impact-card-icon-3 {
  background: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);
}
.impact-card-body { margin-bottom: 18px; }
.impact-card-number {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 10px;
}
.impact-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.impact-card-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-muted);
}
.impact-card-desc strong {
  color: var(--color-text);
  font-weight: 700;
}
.impact-card-bar {
  height: 6px;
  width: 100%;
  border-radius: 999px;
  background: var(--color-bg-alt);
  overflow: hidden;
}
.impact-card-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #4F46E5, #7C3AED, #06B6D4);
  transform-origin: left;
  animation: bar-grow 1.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}
@keyframes bar-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* 保留原 partner-item 样式（其他地方可能还用到） */
.partners-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}
.partner-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(6px);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  transition: all var(--transition);
  opacity: 0.7;
}
.partner-item:hover {
  color: var(--color-primary);
  opacity: 1;
  border-color: rgba(79,70,229,0.2);
  background: rgba(79,70,229,0.05);
  box-shadow: 0 6px 18px rgba(79,70,229,0.08);
  transform: translateY(-2px);
}
.partner-item-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* ========== 通用区块 ========== */

.section-header.align-left {
  max-width: 560px;
  margin: 0 0 48px;
  text-align: left;
}

/* ========== 平台特色（Tab 联动新布局） ========== */
.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

#features {
  position: relative;
  overflow: hidden;
  padding: var(--section-padding) 0;
  background:
    radial-gradient(1100px 520px at 15% 0%, rgba(79,70,229,0.06), transparent 60%),
    radial-gradient(900px 460px at 85% 100%, rgba(6,182,212,0.06), transparent 60%),
    #fff;
}

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

.features-bg-orb {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}
.features-bg-orb.orb-a {
  top: -120px;
  left: -80px;
  background: radial-gradient(circle, rgba(99,102,241,0.45), transparent 65%);
  animation: orbFloatA 14s ease-in-out infinite;
}
.features-bg-orb.orb-b {
  bottom: -140px;
  right: -120px;
  background: radial-gradient(circle, rgba(14,165,233,0.4), transparent 65%);
  animation: orbFloatB 16s ease-in-out infinite;
}
@keyframes orbFloatA { 0%,100%{transform: translate(0,0);} 50%{transform: translate(24px, 36px);} }
@keyframes orbFloatB { 0%,100%{transform: translate(0,0);} 50%{transform: translate(-32px, -28px);} }

.features-bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(79,70,229,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,70,229,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 80%);
  z-index: 0;
}

#features > .container {
  position: relative;
  z-index: 1;
}

/* ---------- 2. Tab 导航条 ---------- */
.features-tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  padding: 10px;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.6));
  border: 1px solid var(--color-border-light);
  border-radius: 22px;
  box-shadow: 0 12px 40px -18px rgba(79,70,229,0.18);
  margin: -8px auto 44px;
  max-width: 1000px;
  backdrop-filter: blur(8px);
}

.f-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 8px 14px;
  background: transparent;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
  color: var(--color-text-secondary);
}

.f-tab:hover {
  background: rgba(79,70,229,0.06);
  color: var(--color-text);
}

.f-tab.is-active {
  color: var(--color-primary);
  background: linear-gradient(135deg, rgba(79,70,229,0.1), rgba(124,58,237,0.08));
  box-shadow: inset 0 0 0 1px rgba(79,70,229,0.18);
}

.f-tab-ico {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  filter: grayscale(0.4);
  opacity: 0.85;
}
.f-tab.is-active .f-tab-ico { filter: none; opacity: 1; transform: scale(1.06); }
.f-tab:hover .f-tab-ico { filter: grayscale(0.1); opacity: 0.95; }

/* 6 种 Tab 图标配色（对应数据面板） */
.t-ico-1 { background: linear-gradient(135deg, rgba(79,70,229,0.18), rgba(79,70,229,0.06)); color: #4F46E5; }
.t-ico-2 { background: linear-gradient(135deg, rgba(6,182,212,0.18), rgba(6,182,212,0.06)); color: #06B6D4; }
.t-ico-3 { background: linear-gradient(135deg, rgba(245,158,11,0.18), rgba(245,158,11,0.06)); color: #F59E0B; }
.t-ico-4 { background: linear-gradient(135deg, rgba(16,185,129,0.18), rgba(16,185,129,0.06)); color: #10B981; }
.t-ico-5 { background: linear-gradient(135deg, rgba(239,68,68,0.18), rgba(239,68,68,0.06)); color: #EF4444; }
.t-ico-6 { background: linear-gradient(135deg, rgba(139,92,246,0.18), rgba(139,92,246,0.06)); color: #8B5CF6; }

.f-tab-label {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.005em;
}

/* ---------- 3. 核心内容区（左展示 + 右详情） ---------- */
.features-main {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 32px;
  align-items: stretch;
}

/* 左：舞台展示图 */
.features-stage {
  position: relative;
}

.features-stage-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(79,70,229,0.15);
  box-shadow:
    0 30px 80px -30px rgba(79,70,229,0.35),
    0 10px 30px -12px rgba(15,23,42,0.1);
  background: #0F172A;
}

.features-stage-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1), filter 0.8s ease;
}
.features-stage-frame:hover .features-stage-img {
  transform: scale(1.06);
}

/* 覆盖层 - 按 Tab 改变色调 - 默认紫 */
.features-stage-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15,23,42,0.1) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(79,70,229,0.35) 0%, rgba(124,58,237,0.25) 100%);
  transition: background 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

/* 6 种覆盖层主题（通过 .features-stage-frame[data-theme=N] 切换） */
.features-stage-frame[data-theme="0"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(79,70,229,0.4) 0%, rgba(99,102,241,0.25) 100%);
}
.features-stage-frame[data-theme="1"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(6,182,212,0.42) 0%, rgba(14,165,233,0.25) 100%);
}
.features-stage-frame[data-theme="2"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(245,158,11,0.42) 0%, rgba(249,115,22,0.25) 100%);
}
.features-stage-frame[data-theme="3"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(16,185,129,0.42) 0%, rgba(5,150,105,0.25) 100%);
}
.features-stage-frame[data-theme="4"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(239,68,68,0.42) 0%, rgba(225,29,72,0.25) 100%);
}
.features-stage-frame[data-theme="5"] .features-stage-overlay {
  background:
    linear-gradient(180deg, rgba(15,23,42,0.08) 0%, rgba(15,23,42,0.55) 65%, rgba(15,23,42,0.85) 100%),
    linear-gradient(135deg, rgba(139,92,246,0.42) 0%, rgba(124,58,237,0.25) 100%);
}

/* 图上说明（左下） */
.features-stage-cap {
  position: absolute;
  left: 28px;
  bottom: 28px;
  right: 28px;
  z-index: 3;
  color: #fff;
}

.cap-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.features-stage-cap h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

/* 浮动数据面板（左上） */
.stage-panel {
  position: absolute;
  top: 24px;
  right: 24px;
  min-width: 150px;
  padding: 16px 18px 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.5);
  box-shadow: 0 18px 40px -14px rgba(15,23,42,0.35);
  opacity: 0;
  transform: translateY(-8px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 4;
}
.stage-panel.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.panel-val {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.panel-1 .panel-val { background: linear-gradient(135deg, #4F46E5, #7C3AED); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-2 .panel-val { background: linear-gradient(135deg, #06B6D4, #0EA5E9); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-3 .panel-val { background: linear-gradient(135deg, #F59E0B, #F97316); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-4 .panel-val { background: linear-gradient(135deg, #10B981, #059669); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-5 .panel-val { background: linear-gradient(135deg, #EF4444, #E11D48); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-6 .panel-val { background: linear-gradient(135deg, #8B5CF6, #7C3AED); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.panel-key {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* 右：详情卡片容器 */
.features-detail {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.f-detail {
  height: 100%;
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: 32px 30px 28px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid var(--color-border-light);
  border-radius: 28px;
  box-shadow: 0 18px 50px -24px rgba(15,23,42,0.14);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}
.f-detail.is-active {
  position: relative;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.f-detail-ico {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.6);
}

.f-detail-title {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--color-text);
}

.f-detail-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin: 0 0 18px;
}

.f-detail-list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.f-detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  font-weight: 500;
}
.f-detail-list li svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.f-detail-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-white);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: 14px;
  text-decoration: none;
  align-self: flex-start;
  box-shadow: 0 10px 24px -12px rgba(79,70,229,0.6);
  transition: all 0.3s ease;
}
.f-detail-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -12px rgba(79,70,229,0.75);
}
.f-detail-link svg { transition: transform 0.3s ease; }
.f-detail-link:hover svg { transform: translateX(3px); }

/* ---------- 4. 底部能力数据徽标条 ---------- */
.features-statsbar {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding: 22px 24px;
  background:
    linear-gradient(135deg, rgba(79,70,229,0.06), rgba(6,182,212,0.05)),
    #fff;
  border: 1px solid rgba(79,70,229,0.12);
  border-radius: 24px;
}

.f-stat-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  text-align: center;
  position: relative;
}

.f-stat-pill + .f-stat-pill::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(79,70,229,0.18), transparent);
}

.f-stat-pill-num {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.f-stat-pill-lbl {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* ---------- 响应式适配 ---------- */
@media (max-width: 1024px) {
  .features-tabs { grid-template-columns: repeat(3, 1fr); }
  .features-main { grid-template-columns: 1fr; gap: 28px; }
  .features-detail { min-height: auto; }
  .f-detail.is-active { position: relative; }
  .features-statsbar { grid-template-columns: repeat(3, 1fr); }
  .f-stat-pill:nth-child(4)::before { display: none; }
  .f-detail-link { padding: 11px 18px; }
}

@media (max-width: 768px) {
  .features-tabs { gap: 6px; padding: 8px; border-radius: 18px; margin-bottom: 28px; }
  .f-tab { padding: 12px 4px 10px; border-radius: 12px; }
  .f-tab-ico { width: 32px; height: 32px; border-radius: 9px; }
  .f-tab-ico img { width: 16px; height: 16px; }
  .f-tab-label { font-size: 12px; }

  .features-stage-frame { aspect-ratio: 4 / 3.2; border-radius: 20px; }
  .features-stage-cap { left: 18px; right: 18px; bottom: 18px; }
  .features-stage-cap h3 { font-size: 18px; }
  .cap-tag { font-size: 11px; padding: 5px 11px; }

  .stage-panel { top: 16px; right: 16px; min-width: 120px; padding: 12px 14px 10px; border-radius: 14px; }
  .panel-val { font-size: 20px; }
  .panel-key { font-size: 11px; }

  .f-detail { padding: 24px 20px; border-radius: 20px; }
  .f-detail-ico { width: 48px; height: 48px; border-radius: 14px; margin-bottom: 14px; }
  .f-detail-ico img { width: 22px; height: 22px; }
  .f-detail-title { font-size: 20px; }
  .f-detail-desc { font-size: 14px; }

  .features-statsbar {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 10px;
    padding: 18px 14px;
    border-radius: 18px;
  }
  .f-stat-pill:nth-child(3)::before,
  .f-stat-pill:nth-child(5)::before { display: none; }
  .f-stat-pill-num { font-size: 22px; }
  .f-stat-pill-lbl { font-size: 12px; }
}

@media (max-width: 480px) {
  .features-tabs { grid-template-columns: repeat(2, 1fr); }
  .features-stage-cap h3 { font-size: 16px; }
  .f-stat-pill + .f-stat-pill::before { display: none; }
}

/* ========== 通用区块 ========== */
.section {
  padding: var(--section-padding) 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(79, 70, 229, 0.08);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-tag.light {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.section-header.light .section-title {
  color: var(--color-text-white);
}

.section-desc {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.section-header.light .section-desc {
  color: var(--color-text-light);
}

/* 平台特色：旧卡片式布局已废弃，统一使用上方新 Tab 联动布局样式 */

/* ========== 研究领域 ========== */
#services {
  position: relative;
  overflow: hidden;
}

/* 研究领域 顶部大图展示 */
.services-hero {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 56px;
  aspect-ratio: 21 / 9;
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--color-border-light);
  animation: float 10s ease-in-out infinite;
}

.services-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 8s ease-in-out;
  animation: slowZoom 18s ease-in-out infinite alternate;
}

@keyframes slowZoom {
  0%   { transform: scale(1); }
  100% { transform: scale(1.08); }
}

.services-hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(17,24,39,0.3) 0%, rgba(17,24,39,0.75) 100%),
    linear-gradient(135deg, rgba(79,70,229,0.3), rgba(6,182,212,0.2));
}

.services-hero-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 40px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.services-hero-chips {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.service-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  transition: all var(--transition);
}

.service-chip:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.5);
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.15);
}

.chip-ai   { background: rgba(79,70,229,0.65); }
.chip-ai   .chip-dot { background: #C4B5FD; }
.chip-bio  { background: rgba(16,185,129,0.65); }
.chip-bio  .chip-dot { background: #6EE7B7; }
.chip-mat  { background: rgba(245,158,11,0.65); }
.chip-mat  .chip-dot { background: #FDE68A; }
.chip-phy  { background: rgba(236,72,153,0.65); }
.chip-phy  .chip-dot { background: #F9A8D4; }
.chip-soc  { background: rgba(6,182,212,0.65); }
.chip-soc  .chip-dot { background: #67E8F9; }

.services-hero-text {
  color: rgba(255,255,255,0.92);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.services-hero-stat {
  position: absolute;
  top: 32px;
  right: 36px;
  padding: 14px 22px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.services-hero-stat span {
  font-size: 12px;
  opacity: 0.8;
  font-weight: 500;
}

.services-hero-stat strong {
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #C4B5FD);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
}

.service-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  backdrop-filter: blur(8px);
  letter-spacing: 0.02em;
}

.tag-ai  { background: linear-gradient(135deg, rgba(79,70,229,0.95), rgba(124,58,237,0.95)); }
.tag-bio { background: linear-gradient(135deg, rgba(16,185,129,0.95), rgba(6,182,212,0.95)); }
.tag-mat { background: linear-gradient(135deg, rgba(245,158,11,0.95), rgba(236,72,153,0.95)); }

.service-image-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(79,70,229,0.15) 100%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.service-card:hover .service-image-glow {
  opacity: 1;
}

.service-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.service-meta span {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(79,70,229,0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(79,70,229,0.12);
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
}

.service-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-image img {
  transform: scale(1.05);
}

.service-content {
  padding: 28px;
}

.service-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.link-arrow:hover {
  gap: 10px;
}

/* ========== 数据成果 ========== */
.stats-section {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
  position: relative;
  overflow: hidden;
}

.stats-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.stats-bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.8;
}

.stats-bg-blob-1 {
  top: -80px;
  left: -100px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(79,70,229,0.35), transparent 70%);
  animation: blobFloat 16s ease-in-out infinite;
}

.stats-bg-blob-2 {
  bottom: -80px;
  right: -100px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(6,182,212,0.28), transparent 70%);
  animation: blobFloat 20s ease-in-out infinite reverse;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(30px, -20px) scale(1.08); }
}

.stats-bg-curve {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  height: 260px;
  opacity: 0.9;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 100%;
  background: radial-gradient(ellipse, rgba(79, 70, 229, 0.2) 0%, transparent 60%);
}

.stats-section .container {
  position: relative;
  z-index: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(167,139,250,0.35), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.stat-card:hover .stat-card-glow {
  opacity: 1;
}

.stat-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  position: relative;
  z-index: 1;
}

.stat-card-icon svg {
  width: 26px;
  height: 26px;
}

.icon-1 { background: linear-gradient(135deg, #6366F1, #8B5CF6); box-shadow: 0 8px 20px rgba(99,102,241,0.35); }
.icon-2 { background: linear-gradient(135deg, #06B6D4, #22D3EE); box-shadow: 0 8px 20px rgba(6,182,212,0.35); }
.icon-3 { background: linear-gradient(135deg, #10B981, #34D399); box-shadow: 0 8px 20px rgba(16,185,129,0.35); }
.icon-4 { background: linear-gradient(135deg, #F59E0B, #FBBF24); box-shadow: 0 8px 20px rgba(245,158,11,0.35); }

.stat-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.stat-trend {
  font-size: 13px;
  color: var(--color-text-light);
  opacity: 0.7;
}

.stat-trend.up {
  color: #6EE7B7;
  opacity: 1;
}

/* ========== 成功案例 ========== */
#cases {
  position: relative;
  overflow: hidden;
}

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

.cases-dot {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor, transparent 70%);
  opacity: 0.5;
}

.cases-dot-1 {
  top: 12%;
  left: 6%;
  width: 140px;
  height: 140px;
  color: rgba(79,70,229,0.12);
  filter: blur(2px);
}

.cases-dot-2 {
  bottom: 15%;
  right: 8%;
  width: 180px;
  height: 180px;
  color: rgba(6,182,212,0.1);
  filter: blur(2px);
}

.cases-ring {
  position: absolute;
  top: 40%;
  right: 20%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px dashed rgba(124,58,237,0.15);
  animation: ringRotate 30s linear infinite;
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  padding: 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.case-card-strip {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.strip-1 { background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end)); }
.strip-2 { background: linear-gradient(90deg, #06B6D4, #10B981); }
.strip-3 { background: linear-gradient(90deg, #F59E0B, #EC4899); }

.case-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.case-tag {
  display: inline-block;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(79,70,229,0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(79,70,229,0.12);
}

.case-card:hover {
  box-shadow: var(--shadow-2xl);
  transform: translateY(-6px);
  border-color: transparent;
}

.case-quote {
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.case-rate {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 700;
  color: #92400E;
  background: rgba(245,158,11,0.12);
  border-radius: var(--radius-full);
}

.case-rate svg { width: 14px; height: 14px; }

.case-avatar.avatar-a { background: linear-gradient(135deg, #6366F1, #8B5CF6); }
.case-avatar.avatar-b { background: linear-gradient(135deg, #10B981, #06B6D4); }
.case-avatar.avatar-c { background: linear-gradient(135deg, #F59E0B, #EC4899); }

.case-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.case-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.case-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.case-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 2px;
}

.case-role {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ========== 服务方案 ========== */
#pricing {
  position: relative;
  overflow: hidden;
}

.pricing-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  pointer-events: none;
}

.pricing-bg-blob-1 {
  top: -120px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(79,70,229,0.22), transparent 70%);
  animation: blobFloat 18s ease-in-out infinite;
}

.pricing-bg-blob-2 {
  bottom: -100px;
  right: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(6,182,212,0.18), transparent 70%);
  animation: blobFloat 22s ease-in-out infinite reverse;
}

#pricing .container {
  position: relative;
  z-index: 1;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  padding: 40px 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(167,139,250,0.18), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.pricing-card:hover::before {
  opacity: 1;
}

/* 丝带装饰 */
.pricing-ribbon {
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 120px;
  overflow: hidden;
  pointer-events: none;
}

.pricing-ribbon::after {
  content: '';
  position: absolute;
  top: 22px;
  left: -42px;
  width: 160px;
  height: 22px;
  transform: rotate(-45deg);
  opacity: 0.9;
}

.ribbon-basic::after      { background: linear-gradient(90deg, #9CA3AF, #6B7280); }
.ribbon-pro::after        { background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end)); }
.ribbon-enterprise::after { background: linear-gradient(90deg, #F59E0B, #EC4899); }

/* 图标盒子 */
.pricing-icon-box {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: #fff;
  position: relative;
  z-index: 1;
}

.pricing-icon-box svg {
  width: 28px;
  height: 28px;
}

.ib-1 { background: linear-gradient(135deg, #6B7280, #9CA3AF); box-shadow: 0 10px 24px rgba(107,114,128,0.3); }
.ib-2 { background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end)); box-shadow: 0 10px 24px rgba(79,70,229,0.38); }
.ib-3 { background: linear-gradient(135deg, #F59E0B, #EC4899); box-shadow: 0 10px 24px rgba(245,158,11,0.35); }

.pricing-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.pricing-card.pricing-featured {
  border: 2px solid transparent;
  background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
              linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end)) border-box;
  box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.3);
  transform: scale(1.02);
}

.pricing-card.pricing-featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 20px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-header {
  margin-bottom: 28px;
}

.pricing-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--color-text-muted);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border-light);
}

.price-currency {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.price-amount.custom {
  font-size: 28px;
  color: var(--color-primary);
}

.price-period {
  font-size: 16px;
  color: var(--color-text-muted);
  margin-left: 2px;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.pricing-features img {
  flex-shrink: 0;
  margin-top: 1px;
}

/* ========== 常见问题 ========== */
.faq-section {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
  position: relative;
  overflow: hidden;
}

.faq-bg-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(167,139,250,0.25) 0, transparent 2px),
    radial-gradient(circle at 25% 60%, rgba(34,211,238,0.22) 0, transparent 2px),
    radial-gradient(circle at 50% 10%, rgba(253,224,71,0.2) 0, transparent 1.5px),
    radial-gradient(circle at 70% 45%, rgba(244,114,182,0.22) 0, transparent 2px),
    radial-gradient(circle at 90% 80%, rgba(167,139,250,0.25) 0, transparent 2px),
    radial-gradient(circle at 40% 85%, rgba(34,211,238,0.18) 0, transparent 1.5px),
    radial-gradient(circle at 85% 25%, rgba(253,224,71,0.18) 0, transparent 1.5px),
    radial-gradient(circle at 5% 75%, rgba(244,114,182,0.18) 0, transparent 1.5px);
  opacity: 0.8;
  animation: starsTwinkle 5s ease-in-out infinite alternate;
}

@keyframes starsTwinkle {
  0%   { opacity: 0.5; transform: translateY(0); }
  100% { opacity: 0.9; transform: translateY(-4px); }
}

.faq-section::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 50%;
  height: 100%;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.18) 0%, transparent 60%);
}

.faq-section .container {
  position: relative;
  z-index: 1;
}

.faq-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}

.faq-left,
.faq-right {
  position: relative;
  z-index: 1;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* FAQ 右侧插图 */
.faq-right {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faq-image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 24px 50px -12px rgba(0,0,0,0.4);
  aspect-ratio: 4 / 5;
  animation: float 8s ease-in-out infinite;
}

.faq-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.faq-image-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(124,58,237,0.3) 100%);
  pointer-events: none;
}

.faq-support-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(79,70,229,0.25) 0%, rgba(6,182,212,0.2) 100%);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(10px);
  color: #fff;
}

.faq-support-card svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: #C4B5FD;
}

.faq-support-card strong {
  font-size: 14px;
  display: block;
  margin-bottom: 4px;
  font-weight: 700;
}

.faq-support-card span {
  font-size: 13px;
  color: rgba(255,255,255,0.82);
  line-height: 1.6;
}

.faq-support-card strong strong {
  display: inline;
  color: #FDE68A;
}

.faq-floating-chat {
  position: absolute;
  top: 24px;
  right: -10px;
  width: 72px;
  height: 72px;
  animation: floatChat 6s ease-in-out infinite;
}

.faq-floating-chat svg {
  width: 100%;
  height: 100%;
}

@keyframes floatChat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50%      { transform: translate(-6px, -12px) rotate(4deg); }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item.active,
.faq-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-white);
  text-align: left;
}

.faq-icon {
  flex-shrink: 0;
  color: var(--color-text-light);
  transition: transform var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ========== CTA 区域 ========== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
  position: relative;
  overflow: hidden;
}

.cta-bg-image {
  position: absolute;
  inset: 0;
  background-image: url('../image/cta-universe.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  mix-blend-mode: screen;
  animation: slowZoom 22s ease-in-out infinite alternate;
}

.cta-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(79,70,229,0.88) 0%, rgba(124,58,237,0.92) 100%);
}

.cta-bg-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 30%, rgba(255,255,255,0.9) 0, transparent 1.5px),
    radial-gradient(circle at 28% 75%, rgba(253,224,71,0.85) 0, transparent 1px),
    radial-gradient(circle at 55% 20%, rgba(167,139,250,0.9) 0, transparent 1.5px),
    radial-gradient(circle at 72% 55%, rgba(110,231,183,0.8) 0, transparent 1px),
    radial-gradient(circle at 85% 80%, rgba(255,255,255,0.85) 0, transparent 1.5px),
    radial-gradient(circle at 40% 50%, rgba(253,224,71,0.6) 0, transparent 1px),
    radial-gradient(circle at 90% 25%, rgba(167,139,250,0.85) 0, transparent 1px),
    radial-gradient(circle at 8% 60%, rgba(110,231,183,0.75) 0, transparent 1px);
  animation: starsTwinkle 6s ease-in-out infinite alternate;
  opacity: 0.8;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  transform: rotate(15deg);
  z-index: 0;
}

.cta-container {
  position: relative;
  z-index: 2;
}

/* CTA 科研装饰元素 */
.cta-decoration {
  position: absolute;
  z-index: 1;
  pointer-events: none;
  opacity: 0.85;
}

/* DNA 双螺旋 */
.cta-deco-dna {
  top: 15%;
  left: 4%;
  width: 80px;
  height: 180px;
  background:
    linear-gradient(180deg, rgba(196,181,253,0.95) 0%, rgba(196,181,253,0) 100%),
    linear-gradient(180deg, rgba(167,139,250,0) 0%, rgba(196,181,253,0.95) 100%);
  background-size: 2px 100%, 2px 100%;
  background-position: 0 0, 100% 0;
  background-repeat: no-repeat;
  border-radius: 50%;
  mask-image: linear-gradient(180deg, black 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, black 0%, transparent 100%);
  animation: dnaFloat 8s ease-in-out infinite;
}

.cta-deco-dna::before,
.cta-deco-dna::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(196,181,253,0.95), rgba(253,224,71,0.8));
  border-radius: 1px;
}

.cta-deco-dna::before { top: 25%; transform: skewY(-12deg); }
.cta-deco-dna::after  { top: 60%; transform: skewY(12deg); }

@keyframes dnaFloat {
  0%, 100% { transform: translateY(0) rotate(-4deg); }
  50%      { transform: translateY(-12px) rotate(4deg); }
}

/* 原子模型 */
.cta-deco-atom {
  bottom: 18%;
  left: 8%;
  width: 100px;
  height: 100px;
  animation: atomSpin 14s linear infinite;
}

.cta-deco-atom::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(253,224,71,0.85);
  transform: rotateX(65deg);
}

.cta-deco-atom::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(110,231,183,0.85);
  transform: rotateY(65deg);
}

@keyframes atomSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* 神经网络节点 */
.cta-deco-node {
  top: 20%;
  right: 6%;
  width: 140px;
  height: 140px;
  animation: nodeFloat 10s ease-in-out infinite;
}

.cta-deco-node::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  background: #C4B5FD;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow:
    -45px -30px 0 -2px rgba(110,231,183,0.9),
     45px -30px 0 -2px rgba(253,224,71,0.9),
    -45px  30px 0 -2px rgba(253,224,71,0.9),
     45px  30px 0 -2px rgba(110,231,183,0.9),
     0    -55px 0 -2px rgba(167,139,250,0.9),
     0     55px 0 -2px rgba(167,139,250,0.9);
  filter: drop-shadow(0 0 6px rgba(196,181,253,0.7));
}

.cta-deco-node::after {
  content: '';
  position: absolute;
  inset: 20px;
  background:
    linear-gradient(45deg, transparent 45%, rgba(196,181,253,0.4) 50%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, rgba(110,231,183,0.4) 50%, transparent 55%),
    linear-gradient(90deg, transparent 45%, rgba(253,224,71,0.4) 50%, transparent 55%);
  opacity: 0.6;
}

@keyframes nodeFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-10px, -16px) scale(1.06); }
}

.cta-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text-white);
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
}

.cta-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto 16px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

.cta-input {
  flex: 1;
  padding: 14px 20px;
  background: var(--color-text-white);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--color-text);
  outline: none;
}

.cta-input::placeholder {
  color: var(--color-text-muted);
}

.cta-form .btn {
  padding: 14px 28px;
}

.cta-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

/* ========== 页脚 ========== */
.footer {
  background: var(--color-bg-darker);
  padding-top: 80px;
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.footer-top-wave {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(180deg, transparent 0%, var(--color-bg-darker) 100%);
  pointer-events: none;
}

.footer-top-wave::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  right: 0;
  height: 80px;
  background-image:
    radial-gradient(circle at 10% 100%, rgba(79,70,229,0.2) 0, transparent 40px),
    radial-gradient(circle at 30% 100%, rgba(124,58,237,0.15) 0, transparent 45px),
    radial-gradient(circle at 55% 100%, rgba(6,182,212,0.18) 0, transparent 50px),
    radial-gradient(circle at 80% 100%, rgba(16,185,129,0.15) 0, transparent 45px),
    radial-gradient(circle at 95% 100%, rgba(236,72,153,0.18) 0, transparent 40px);
  mask-image: linear-gradient(180deg, black 20%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, black 20%, transparent 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
  position: relative;
  z-index: 1;
}

.footer-logo .logo-text {
  -webkit-text-fill-color: white;
}

/* 安全认证标识 */
.footer-badge-trust {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  letter-spacing: 0.01em;
}

.footer-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10B981, #34D399);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.15);
  animation: pulse 2s ease-in-out infinite;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-light);
  opacity: 0.8;
  margin: 20px 0 24px;
  max-width: 320px;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.footer-socials a:hover {
  background: var(--color-primary);
  border-color: transparent;
  transform: translateY(-2px);
}

.footer-socials img {
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.footer-heading {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-white);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-light);
  opacity: 0.8;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-white);
  opacity: 1;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact span {
  font-size: 12px;
  opacity: 0.6;
}

.footer-contact strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 13px;
  opacity: 0.7;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer-legal a:hover {
  opacity: 1;
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white;
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(79, 70, 229, 0.5);
}

/* ========== 滚动显示动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
  :root {
    --section-padding: 72px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats-inline {
    justify-content: center;
  }

  .hero-title {
    font-size: 48px;
  }

  /* 新增：平台特色 左右布局转单列 */
  .features-wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .section-header.align-left {
    max-width: 100%;
    text-align: center;
    margin: 0 auto 48px;
  }

  .features-showcase-stat {
    grid-template-columns: auto 1px auto 1px auto;
    justify-content: center;
  }

  /* 新增：研究领域 */
  .services-hero {
    aspect-ratio: 16 / 9;
    margin-bottom: 40px;
  }

  .services-hero-content {
    padding: 28px 32px;
  }

  .services-hero-stat {
    top: 20px;
    right: 20px;
  }

  /* 新增：FAQ 左右布局转单列 */
  .faq-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .faq-right {
    position: static;
    max-width: 480px;
    margin: 0 auto;
  }

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

  /* CTA 装饰缩小/隐藏 */
  .cta-deco-dna,
  .cta-deco-atom,
  .cta-deco-node {
    transform: scale(0.7);
    opacity: 0.6;
  }

  .features-grid,
  .services-grid,
  .cases-grid,
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .float-1,
  .float-2 {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 56px;
    --container-padding: 20px;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-links.mobile-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    background: white;
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
    gap: 4px;
  }

  .nav-links.mobile-open a {
    padding: 12px 16px;
  }

  .hero {
    padding-top: 120px;
    padding-bottom: 72px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .hero-stats-inline {
    gap: 20px;
  }

  .stat-mini-divider {
    display: none;
  }

  .section-title {
    font-size: 28px;
  }

  .section-desc {
    font-size: 16px;
  }

  /* 新增：平台特色 */
  .feature-card.feature-card-list {
    padding: 16px 18px;
    gap: 12px;
  }

  .feature-card.feature-card-list .feature-icon {
    width: 44px;
    height: 44px;
  }

  .feature-card-arrow {
    display: none;
  }

  .features-showcase-stat {
    padding: 18px 20px;
    gap: 14px;
  }

  .f-stat strong {
    font-size: 22px;
  }

  .f-stat-sep {
    height: 30px;
  }

  /* 新增：研究领域 */
  .services-hero {
    aspect-ratio: 4 / 3;
    margin-bottom: 32px;
  }

  .services-hero-content {
    padding: 20px;
    gap: 14px;
  }

  .services-hero-text {
    font-size: 15px;
  }

  .services-hero-stat {
    position: static;
    margin: 16px 20px 0;
  }

  .service-chip {
    padding: 6px 12px;
    font-size: 12px;
  }

  /* 新增：成功案例 */
  .case-rate {
    margin-left: 0;
  }

  .case-author {
    flex-wrap: wrap;
  }

  /* 新增：FAQ */
  .faq-grid {
    grid-template-columns: 1fr;
  }

  /* CTA 装饰完全隐藏 */
  .cta-deco-dna,
  .cta-deco-atom,
  .cta-deco-node {
    display: none;
  }

  .features-grid,
  .services-grid,
  .cases-grid,
  .pricing-grid,
  .stats-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.pricing-featured {
    transform: none;
  }

  /* ========== 新增：合作伙伴升级适配（≤1024px） ========== */
  .partners {
    padding: 60px 0 48px;
  }
  .partners-header {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 44px;
  }
  .partners-title {
    font-size: 34px;
  }
  .partners-big-stat-number {
    font-size: 60px;
  }
  .partners-impact {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .partners-floater {
    opacity: 0.2;
    transform: scale(0.8);
  }
  .partners-logos {
    gap: 24px;
  }
  .partner-item {
    font-size: 16px;
    padding: 8px 14px;
  }

  .cta-title {
    font-size: 28px;
  }

  .cta-form {
    flex-direction: column;
    background: transparent;
    padding: 0;
    backdrop-filter: none;
  }

  .cta-form .btn {
    width: 100%;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 30px;
  }

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

  .pricing-card {
    padding: 32px 24px;
  }

  .price-amount {
    font-size: 40px;
  }

  /* 新增：平台特色统计条 */
  .features-showcase-stat {
    grid-template-columns: 1fr;
    gap: 16px;
    text-align: center;
  }

  .f-stat-sep {
    display: none;
  }

  /* ========== 新增：合作伙伴升级适配（≤768px） ========== */
  .partners {
    padding: 48px 0 36px;
  }
  .partners-title {
    font-size: 28px;
  }
  .partners-desc {
    font-size: 15px;
  }
  .partners-categories {
    gap: 8px;
  }
  .partners-cat {
    font-size: 12px;
    padding: 6px 12px;
  }
  .partners-big-stat {
    padding: 28px 24px;
  }
  .partners-big-stat-number {
    font-size: 52px;
  }
  .marquee-item {
    padding: 12px 18px;
    min-width: 150px;
    font-size: 14px;
  }
  .partners-impact {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .impact-card-number {
    font-size: 32px;
  }
  .partners-floater {
    display: none;
  }
  .partners-logos {
    gap: 12px;
  }
  .partner-item {
    font-size: 14px;
    padding: 8px 12px;
  }
  .partner-item-icon {
    width: 24px;
    height: 24px;
  }

  /* 新增：服务方案图标盒子 */
  .pricing-icon-box {
    width: 54px;
    height: 54px;
  }

  .pricing-icon-box svg {
    width: 24px;
    height: 24px;
  }

  /* 新增：FAQ 支持卡片 */
  .faq-support-card {
    padding: 16px;
  }
}