/* ============================================================
   贝易学「商务合作」页样式 — High-End Redesign
   ------------------------------------------------------------
   视觉哲学：Apple & Stripe 级现代企业科技感
   色彩架构：极曜深蓝 #0F2240 / 领航科技蓝 #2563EB / 高能起飞橙 #FF6B00
   排版原则：极度严谨的栅格秩序、高阶微磨砂质感、克制而具表现力的动效
   ============================================================ */

/* ==================== 全局变量 ==================== */

body.cooperation-page {
  --coop-navy: #0f2240;
  --coop-navy-light: #1b355d;
  --coop-blue: #2563eb;
  --coop-blue-hover: #1d4ed8;
  --coop-blue-soft: #eff6ff;
  --coop-blue-tint: rgba(37, 99, 235, 0.06);
  --coop-amber: #f59e0b;
  --coop-fire: #ff6b00;
  --coop-fire-deep: #ea580c;
  --coop-ink: #1e293b;
  --coop-muted: #5d6f88;
  --coop-faint: #94a3b8;
  --coop-line: #e2e8f0;
  --coop-card-bg: #ffffff;
  --coop-surface: #f8fafc;
  --coop-radius: 20px;
  color: var(--coop-ink);
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.cooperation-page .site-bg {
  display: none;
}

/* ==================== 顶部导航统一 ==================== */

body.cooperation-page .site-header {
  padding: 14px 0 10px;
}

body.cooperation-page .nav-shell {
  border-color: rgba(15, 34, 64, 0.08);
  background: rgba(255, 255, 255, 0.92);
  box-shadow:
    0 12px 36px rgba(15, 34, 64, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

body.cooperation-page .brand-logo {
  box-shadow: 0 10px 24px rgba(15, 34, 64, 0.14);
}

body.cooperation-page .brand-text strong {
  color: var(--coop-navy);
}

body.cooperation-page .brand-text small {
  color: #64748b;
}

body.cooperation-page .site-nav a {
  color: #475569;
}

body.cooperation-page .site-nav a:hover,
body.cooperation-page .site-nav a:focus-visible {
  color: var(--coop-navy);
}

body.cooperation-page .site-nav a.is-current,
body.cooperation-page .site-nav a[aria-current="page"] {
  color: var(--coop-navy);
  background: var(--coop-blue-soft);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.2);
}

body.cooperation-page .nav-cta,
body.cooperation-page .nav-cta:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--coop-blue), var(--coop-blue-hover));
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.28);
}

/* ==================== 页脚统一 ==================== */

body.cooperation-page .site-footer {
  position: relative;
  padding: 52px 0 38px;
  background: linear-gradient(180deg, var(--coop-navy) 0%, #081528 100%);
}

body.cooperation-page .footer-shell {
  border-top: 0;
  padding-top: 0;
}

body.cooperation-page .footer-shell > div:first-child > p:first-child {
  color: #fff;
  font-weight: 700;
}

body.cooperation-page .footer-shell p,
body.cooperation-page .footer-links a {
  color: rgba(226, 232, 240, 0.72);
}

body.cooperation-page .footer-links a:hover {
  color: #fff;
}

body.cooperation-page .footer-record {
  position: static;
  transform: none;
  margin-top: 24px;
  text-align: center;
}

body.cooperation-page .footer-record a {
  color: rgba(226, 232, 240, 0.5);
  font-size: 0.85rem;
}

/* ==================== 容器与基础排版 ==================== */

.coop-section {
  position: relative;
  overflow: hidden;
}

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

/* 背景精密矩阵网格点 */
.ambient-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(37, 99, 235, 0.11) 1.2px, transparent 1.2px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, rgba(0, 0, 0, 0.7) 0%, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 30%, rgba(0, 0, 0, 0.7) 0%, transparent 72%);
  pointer-events: none;
  z-index: 1;
}

/* 环境漫射光斑 */
.ambient-glow {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.ambient-glow--pain {
  top: -160px;
  right: -120px;
  width: 580px;
  height: 580px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, rgba(245, 158, 11, 0.04) 40%, transparent 70%);
}

.ambient-glow--boost {
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: min(880px, 92vw);
  height: 480px;
  background: radial-gradient(ellipse at center, rgba(255, 107, 0, 0.09) 0%, rgba(37, 99, 235, 0.08) 45%, transparent 70%);
}

/* 漂浮装饰粒子 */
.float-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: coop-float 8s ease-in-out infinite;
}

.float-orb--1 {
  top: 18%;
  left: 7%;
  width: 10px;
  height: 10px;
  background: rgba(37, 99, 235, 0.2);
}

.float-orb--2 {
  top: 32%;
  right: 8%;
  width: 8px;
  height: 8px;
  background: rgba(245, 158, 11, 0.35);
  animation-duration: 9.5s;
  animation-delay: -3s;
}

.float-orb--3 {
  top: 22%;
  left: 10%;
  width: 10px;
  height: 10px;
  background: rgba(255, 107, 0, 0.25);
}

.float-orb--4 {
  top: 36%;
  right: 9%;
  width: 8px;
  height: 8px;
  background: rgba(37, 99, 235, 0.18);
  animation-duration: 10s;
  animation-delay: -4s;
}

@keyframes coop-float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -14px, 0); }
}

/* ================================================================
   模块一：痛点分析（困局呈现）
   ================================================================ */


/* ==================== 顶部视觉横幅 Banner ==================== */
.coop-banner-section {
  padding: clamp(16px, 2.5vw, 28px) 0 clamp(8px, 1.5vw, 16px);
  background: #ffffff;
  position: relative;
  z-index: 3;
}

.coop-banner-container {
  max-width: min(1320px, calc(100% - 32px));
  margin: 0 auto;
}

.coop-banner-card {
  position: relative;
  overflow: hidden;
  border-radius: clamp(14px, 1.8vw, 22px);
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.04),
    0 16px 36px -6px rgba(15, 23, 42, 0.09);
  border: 1px solid rgba(226, 232, 240, 0.9);
  background: #f8fafc;
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 320ms ease;
}

.coop-banner-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 4px 10px rgba(15, 23, 42, 0.05),
    0 24px 48px -8px rgba(15, 23, 42, 0.12);
}

.coop-banner-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1672 / 941;
  object-fit: cover;
  border-radius: inherit;
}

@media (max-width: 640px) {
  .coop-banner-section {
    padding: 12px 0 4px;
  }
  
  .coop-banner-card {
    border-radius: 12px;
  }
}

.coop-pain-section {
  padding: clamp(40px, 6vw, 72px) 0 clamp(40px, 5vw, 60px);
  background: #ffffff;
}

.section-hero-header {
  text-align: center;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* 痛点主标题：全局居中无溢出 */
.pain-main-title {
  margin: 0 auto;
  font-size: clamp(1.85rem, 3.8vw, 3.35rem);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--coop-navy);
  text-align: center;
  width: 100%;
}

.title-chunk {
  display: inline-block;
}

.title-chunk--blue {
  color: var(--coop-blue);
}

/* 那么薄？：橙黄擦入光带底刷 */
.title-chunk--accent {
  position: relative;
  color: var(--coop-blue);
}

.title-chunk--accent::after {
  content: "";
  position: absolute;
  left: -0.04em;
  right: -0.04em;
  bottom: 0.06em;
  height: 0.18em;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.5), rgba(245, 158, 11, 0.15));
  z-index: -1;
  transform: scaleX(0);
  transform-origin: left center;
  animation: coop-mark-swipe 720ms cubic-bezier(0.22, 1, 0.36, 1) 900ms forwards;
}

@keyframes coop-mark-swipe {
  to { transform: scaleX(1); }
}

/* 副标题：优雅克制 */
.pain-lead-sub {
  margin: 20px 0 0;
  text-align: center;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  font-weight: 500;
  line-height: 1.75;
  color: var(--coop-muted);
}

/* ================================================================
   顶级工学卡片系统（Luxury Bento Cards）
   ================================================================ */

.pain-card-grid,
.boost-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: clamp(40px, 5.5vw, 56px);
  width: 100%;
}

/* 卡片本体：高奢白瓷微晶质感 */
.luxury-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--coop-line);
  border-radius: var(--coop-radius);
  padding: 36px 32px 38px;
  text-align: left;
  box-shadow:
    0 1px 3px rgba(15, 34, 64, 0.03),
    0 10px 28px -4px rgba(15, 34, 64, 0.05);
  transition:
    transform 360ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 360ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color 360ms ease;
  overflow: hidden;
}

/* 悬停微互动：柔和上浮、光晕扩张 */
.luxury-card:hover {
  transform: translateY(-8px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow:
    0 24px 56px -12px rgba(15, 34, 64, 0.12),
    0 2px 8px rgba(37, 99, 235, 0.06);
}

/* 卡片顶部行：图标徽章与大序号分列两侧 */
.card-head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

/* 大号科技序号 */
.card-serial {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: rgba(15, 34, 64, 0.08);
  transition: color 360ms ease, transform 360ms ease;
}

.luxury-card:hover .card-serial {
  color: rgba(37, 99, 235, 0.18);
  transform: scale(1.05);
}

.card-serial--amber {
  color: rgba(245, 158, 11, 0.1);
}

.luxury-card:hover .card-serial--amber {
  color: rgba(245, 158, 11, 0.28);
}

/* 卡片图标徽章：54px精致微晶圆角盒 */
.card-symbol-badge {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(15, 34, 64, 0.06);
  transition:
    transform 400ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 400ms ease,
    background 360ms ease,
    color 360ms ease;
}

.card-symbol-badge svg {
  width: 25px;
  height: 25px;
}

/* 痛点卡片配色 */
.card-symbol--red {
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  color: #ef4444;
}

.card-symbol--blue {
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  color: var(--coop-blue);
}

.card-symbol--amber {
  background: linear-gradient(135deg, #fffbeb, #fef3c7);
  color: #d97706;
}

/* 悬停图标跃动与流光变色 */
.pain-card:hover .card-symbol-badge {
  transform: translateY(-4px) rotate(-6deg) scale(1.08);
  background: linear-gradient(135deg, var(--coop-blue), var(--coop-blue-hover));
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.28);
}

/* 卡片底部边框微流光指示条 */
.luxury-card::after {
  content: "";
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, var(--coop-blue), rgba(37, 99, 235, 0.1));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 460ms cubic-bezier(0.22, 1, 0.36, 1);
}

.luxury-card:hover::after {
  transform: scaleX(1);
}

/* 标题与描述排版：文字规整、字距舒适 */
.card-headline {
  margin: 0 0 10px;
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--coop-navy);
}

.card-description {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--coop-muted);
}

/* ================================================================
   模块二：利润起飞（方案破局）
   ================================================================ */

.coop-boost-section {
  padding: clamp(32px, 4.5vw, 54px) 0 clamp(24px, 3.2vw, 40px);
  background: linear-gradient(180deg, #ffffff 0%, #f7faff 45%, #f1f6fd 100%);
  text-align: center;
}

.section-boost-header {
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
}

/* 破局增利方案胶囊徽章（雷达脉冲光圈） */
.pre-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--coop-blue-soft);
  border: 1px solid rgba(37, 99, 235, 0.22);
  color: var(--coop-blue-hover);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: clamp(14px, 2.2vw, 22px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.07);
}

.pill-radar-dot {
  position: relative;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coop-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
  animation: coop-radar-pulse 2.2s infinite ease-in-out;
}

@keyframes coop-radar-pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.35); opacity: 1; }
}

/* 破局巨幅标题 */
.boost-giant-title {
  margin: 0;
  line-height: 1.26;
  letter-spacing: -0.025em;
}

/* 第一行：稳健企业深蓝 */
.title-subline {
  display: block;
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  font-weight: 800;
  color: var(--coop-navy);
}

/* 第二行：高能爆发点 */
.title-climax-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(8px, 1.6vw, 16px);
  margin-top: 10px;
  font-size: clamp(2.5rem, 6.2vw, 4.5rem);
  font-weight: 950;
}

.climax-blue {
  color: var(--coop-blue-hover);
}

/* “起飞！”：流光掠影动画（炫酷高燃传达主题） */
.climax-fire {
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 60%, #dc2626 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: coop-fire-shimmer 4s ease-in-out infinite alternate;
}

@keyframes coop-fire-shimmer {
  0% { filter: drop-shadow(0 4px 12px rgba(234, 88, 12, 0.25)); }
  100% { filter: drop-shadow(0 6px 22px rgba(234, 88, 12, 0.45)); }
}

/* 火箭徽章：浮动与动力感 */
.rocket-flight-box {
  display: inline-grid;
  place-items: center;
  width: clamp(44px, 5.4vw, 60px);
  height: clamp(44px, 5.4vw, 60px);
  border-radius: 18px;
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  color: #ffffff;
  box-shadow:
    0 10px 24px rgba(234, 88, 12, 0.36),
    inset 0 1px 1px rgba(255, 255, 255, 0.6);
  animation: coop-rocket-bob 2.8s ease-in-out infinite alternate;
}

.rocket-flight-box svg {
  width: clamp(22px, 2.8vw, 32px);
  height: clamp(22px, 2.8vw, 32px);
  transform: rotate(6deg);
}

@keyframes coop-rocket-bob {
  0% { transform: translate3d(0, 0, 0) rotate(0deg); }
  100% { transform: translate3d(4px, -8px, 0) rotate(12deg) scale(1.08); }
}

/* 起飞卡片专有微调 */
.card-symbol--fire {
  background: linear-gradient(135deg, #fff7ed, #ffedd5);
  color: var(--coop-fire-deep);
}

.boost-card:hover {
  border-color: rgba(245, 158, 11, 0.35);
  box-shadow:
    0 24px 56px -12px rgba(15, 34, 64, 0.12),
    0 2px 10px rgba(245, 158, 11, 0.08);
}

.boost-card:hover .card-symbol--fire {
  transform: translateY(-4px) rotate(-6deg) scale(1.08);
  background: linear-gradient(135deg, #f59e0b, #ea580c);
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(234, 88, 12, 0.32);
}

.boost-card::after {
  background: linear-gradient(90deg, #f59e0b, #ea580c);
}

/* ================================================================
   炫酷视口滚动动效（Smooth Reveal Timeline）
   ================================================================ */

/* 顶部横幅与联系栏首屏秒开，绝不设为透明度 0 避免白屏延迟 */
.coop-banner-card,
.coop-contact-slim-bar {
  opacity: 1 !important;
  transform: none !important;
  animation: none !important;
}

.reveal {
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.reveal.is-visible {
  opacity: 1;
  animation: coop-rise 360ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* 痛点标题逐词入场动效 */
.pain-main-title .title-chunk.is-visible { animation-duration: 560ms; }
.pain-main-title .title-chunk:nth-child(2).is-visible { animation-delay: 70ms; }
.pain-main-title .title-chunk:nth-child(3).is-visible { animation-delay: 140ms; }
.pain-main-title .title-chunk:nth-child(4).is-visible { animation-delay: 210ms; }
.pain-main-title .title-chunk:nth-child(5).is-visible { animation-delay: 280ms; }
.pain-main-title .title-chunk:nth-child(6).is-visible { animation-delay: 350ms; }

.pain-lead-sub.is-visible { animation-delay: 460ms; }

/* 痛点卡片交错入场 */
.pain-card-grid .pain-card:nth-child(1).is-visible { animation-delay: 100ms; }
.pain-card-grid .pain-card:nth-child(2).is-visible { animation-delay: 220ms; }
.pain-card-grid .pain-card:nth-child(3).is-visible { animation-delay: 340ms; }

/* 破局板块交错入场 */
.pre-pill-badge.is-visible { animation-delay: 50ms; }
.title-subline.is-visible { animation-delay: 140ms; }
.title-climax-line.is-visible { animation-delay: 250ms; }

/* 起飞卡片交错入场 */
.boost-card-grid .boost-card:nth-child(1).is-visible { animation-delay: 120ms; }
.boost-card-grid .boost-card:nth-child(2).is-visible { animation-delay: 240ms; }
.boost-card-grid .boost-card:nth-child(3).is-visible { animation-delay: 360ms; }

@keyframes coop-rise {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================================
   模块三：利润计算器（高科技交互测算面板）
   ================================================================ */

.coop-calc-section {
  padding: clamp(16px, 2.4vw, 32px) 0 clamp(72px, 8vw, 100px);
  background: #f8fafc;
  position: relative;
}

.ambient-glow--calc {
  display: none;
}

.section-calc-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto clamp(24px, 3.5vw, 38px);
}

.calc-main-title {
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  color: #0f172a;
}

.calc-lead-sub {
  margin: 10px 0 0;
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  color: #64748b;
  line-height: 1.6;
}

/* ==================== 统一高奢商业计算舱双栏架构 ==================== */
.calc-cockpit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
  max-width: 1140px;
  margin: 0 auto;
}

/* ==================== 左侧：参数控制台 ==================== */
.calc-controls-panel {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 26px 26px 28px;
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.02);
  display: flex;
  flex-direction: column;
}

.panel-header {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f1f5f9;
}

.panel-tag {
  display: inline-block;
  background: #f1f5f9;
  color: #475569;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.panel-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.01em;
}

/* 统一参数组 */
.calc-slider-group {
  margin-bottom: 16px;
}

.slider-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 7px;
}

.slider-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
}
.bundle-cost-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
  font-size: 0.76rem;
  font-weight: 750;
  color: #2563eb;
  background: #eff6ff;
  border: 1px solid rgba(37, 99, 235, 0.22);
  padding: 1px 7px;
  border-radius: 5px;
  vertical-align: middle;
  letter-spacing: 0.01em;
}


/* 统一高级数字输入胶囊框 */
.slider-input-badge {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  padding: 3px 8px;
  border-radius: 8px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.slider-input-badge:focus-within {
  border-color: #2563eb;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.val-currency {
  font-size: 0.85rem;
  font-weight: 700;
  color: #64748b;
}

.tech-number-input {
  width: 82px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 800;
  color: #0f172a;
  text-align: right;
  padding: 2px 2px;
  outline: none;
  font-variant-numeric: tabular-nums;
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
  appearance: textfield;
}

.tech-number-input::-webkit-outer-spin-button,
.tech-number-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.val-unit {
  font-size: 0.78rem;
  color: #64748b;
  font-weight: 600;
  margin-left: 2px;
}

/* 统一滑块轨道 */
.slider-track-wrap {
  position: relative;
  display: flex;
  align-items: center;
  height: 20px;
}

.tech-slider,
.tech-slider--cyan,
.tech-slider--amber {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  outline: none;
  cursor: pointer;
  background: linear-gradient(
    to right,
    #2563eb 0%,
    #2563eb var(--slider-fill, 10%),
    #e2e8f0 var(--slider-fill, 10%),
    #e2e8f0 100%
  );
  transition: background 0.08s linear;
}

.tech-slider::-webkit-slider-thumb,
.tech-slider--cyan::-webkit-slider-thumb,
.tech-slider--amber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid #2563eb;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.tech-slider::-webkit-slider-thumb:hover,
.tech-slider::-webkit-slider-thumb:active {
  transform: scale(1.18);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.tech-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid #2563eb;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
  cursor: pointer;
}


/* 橙色高燃科技滑块（点读笔升级模块专属） */
.tech-slider--orange {
  background: linear-gradient(
    to right,
    #f97316 0%,
    #ea580c var(--slider-fill, 20%),
    #e2e8f0 var(--slider-fill, 20%),
    #e2e8f0 100%
  ) !important;
}

.tech-slider--orange::-webkit-slider-thumb {
  border-color: #ea580c !important;
  box-shadow: 0 2px 8px rgba(234, 88, 12, 0.4) !important;
}

.tech-slider--orange::-webkit-slider-thumb:hover,
.tech-slider--orange::-webkit-slider-thumb:active {
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.55) !important;
}

.tech-slider--orange::-moz-range-thumb {
  border-color: #ea580c !important;
  box-shadow: 0 2px 8px rgba(234, 88, 12, 0.4) !important;
}

.slider-limits {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  font-size: 0.72rem;
  color: #94a3b8;
  font-weight: 500;
}

/* ==================== 1. 轻量化点读笔成本：橙色高燃提亮风格 ==================== */
.calc-sku-highlight {
  position: relative;
  margin: 14px 0 18px;
  padding: 16px 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 45%, #ffffff 100%);
  border: 1.5px solid #fdba74;
  box-shadow:
    0 4px 16px -2px rgba(249, 115, 22, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.calc-sku-highlight:hover {
  border-color: #fb923c;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -2px rgba(249, 115, 22, 0.25);
}

.sku-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sku-meta {
  flex: 1;
}

.sku-title {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 850;
  color: #9a3412;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sku-tag-fixed {
  display: inline-block;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 6px rgba(234, 88, 12, 0.25);
}

.sku-desc {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: #c2410c;
  font-weight: 500;
}

.sku-lock-box {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.sku-price-num {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.sku-big-val {
  font-size: 1.9rem;
  font-weight: 950;
  line-height: 1;
  color: #ea580c;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 8px rgba(234, 88, 12, 0.15);
}

.sku-unit-cny,
.sku-unit-usd {
  font-size: 1.15rem;
  font-weight: 900;
  color: #ea580c;
  margin-left: 2px;
}

.sku-yen {
  font-size: 1rem;
  font-weight: 800;
  color: #f97316;
  margin-left: 2px;
}

.sku-unit {
  font-size: 0.78rem;
  color: #9a3412;
  font-weight: 700;
  margin-left: 4px;
}

/* ==================== 右侧：数据看板与对比柱状图 ==================== */
.calc-display-panel {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 24px 24px 26px;
  color: #0f172a;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.02);
  position: relative;
}

/* ==================== 2. 预计每月净增利润：橙色高亮 ==================== */
.hud-summary-card {
  background: #ffffff;
  border: 1.5px solid #fed7aa;
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 4px 16px -2px rgba(249, 115, 22, 0.1);
}

.hud-top-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}

.hud-label {
  font-size: 0.8rem;
  font-weight: 750;
  color: #9a3412;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hud-main-number {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-variant-numeric: tabular-nums;
  margin: 4px 0 10px;
}

.hud-symbol {
  font-size: 1.65rem;
  font-weight: 900;
  color: #ea580c;
}

.hud-digits {
  font-size: clamp(2.3rem, 3.6vw, 3.2rem);
  font-weight: 950;
  letter-spacing: -0.03em;
  color: #ea580c;
  text-shadow: 0 2px 10px rgba(234, 88, 12, 0.18);
}

.hud-period {
  font-size: 0.92rem;
  font-weight: 700;
  color: #9a3412;
  margin-left: 4px;
}

.hud-sub-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid #ffedd5;
}

.hud-sub-item {
  font-size: 0.84rem;
  color: #475569;
  font-weight: 600;
}

.hud-sub-label {
  color: #64748b;
  margin-right: 4px;
  font-weight: 500;
}

#res-old-unit {
  color: #2563eb;
  font-weight: 800;
}

#res-new-unit {
  color: #ea580c;
  font-weight: 900;
}

.hud-arrow {
  margin: 0 6px;
  color: #94a3b8;
  font-size: 0.78rem;
}

.hud-badge-multiplier {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #fff7ed;
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #c2410c;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.hud-badge-multiplier strong {
  font-size: 0.94rem;
  color: #ea580c;
}

/* ==================== 3 & 4. 柱状图对比：淡蓝色 vs 高科技高燃橙色 ==================== */
.chart-arena {
  position: relative;
  height: 350px;
  margin: 22px 0 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.chart-grid-lines {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.chart-grid-lines span {
  width: 100%;
  height: 1px;
  background: rgba(15, 23, 42, 0.05);
}

.chart-bars-wrap {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 100%;
  padding: 0 16px;
}

.chart-pillar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 130px;
  height: 100%;
  justify-content: flex-end;
}

/* 以前利润气泡：淡蓝质感 */
.pillar-number-bubble {
  font-size: 0.98rem;
  font-weight: 800;
  color: #2563eb;
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  background: #eff6ff;
  border: 1.5px solid rgba(147, 197, 253, 0.9);
  padding: 3px 10px;
  border-radius: 8px;
  box-shadow: 0 3px 8px rgba(37, 99, 235, 0.1);
  transition: transform 0.3s ease;
}

/* 现在利润气泡：高科技橙色 */
.pillar-number-bubble--hero {
  color: #ea580c;
  font-weight: 900;
  border-color: rgba(249, 115, 22, 0.45);
  background: #fff7ed;
  box-shadow: 0 2px 8px rgba(234, 88, 12, 0.18);
}

.pillar-track {
  width: 90px;
  height: 245px;
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: 14px 14px 6px 6px;
  display: flex;
  align-items: flex-end;
  padding: 4px;
  box-shadow: inset 0 2px 5px rgba(15, 23, 42, 0.03);
}

.pillar-bar {
  width: 100%;
  height: 20%;
  border-radius: 10px 10px 3px 3px;
  transition: height 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  overflow: hidden;
}

/* 以前利润柱：淡蓝色柱状图 (Light Blue) */
.pillar-bar--old {
  background: linear-gradient(180deg, #93c5fd 0%, #60a5fa 50%, #3b82f6 100%);
  box-shadow: 0 4px 12px rgba(96, 165, 250, 0.28);
}

.pillar-cap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255, 255, 255, 0.85);
}

/* 现在利润柱：橙色高科技柱状图 (High-Tech Vibrant Orange) */
.pillar-bar--new {
  background: linear-gradient(180deg, #fdba74 0%, #fb923c 25%, #ea580c 70%, #c2410c 100%);
  box-shadow: 0 8px 24px -2px rgba(234, 88, 12, 0.45);
}

.pillar-cap--fire {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3.5px;
  background: #ffffff;
  box-shadow: 0 0 8px #ffedd5;
}

.pillar-label-group {
  text-align: center;
  margin-top: 8px;
}

.pillar-title {
  display: block;
  font-size: 0.86rem;
  font-weight: 800;
  color: #2563eb;
}

.pillar-title--fire {
  color: #ea580c;
}

.pillar-sub {
  display: block;
  font-size: 0.72rem;
  color: #64748b;
  margin-top: 1px;
}

/* 中间倍增连接器 */
.chart-vs-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin-bottom: 82px;
}

.bridge-tag {
  background: #fff7ed;
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #ea580c;
  font-size: 0.82rem;
  font-weight: 850;
  padding: 2px 8px;
  border-radius: 6px;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 2px 6px rgba(234, 88, 12, 0.1);
}

.bridge-tag--negative {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

.bridge-arrow {
  color: #f97316;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
}

.bridge-arrow svg {
  width: 14px;
  height: 14px;
}

/* ==================== 5. 底部财务数据条：升级后利润高亮橙色 ==================== */
.chart-footer-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px 16px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.02);
}

.strip-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.strip-item span {
  font-size: 0.72rem;
  color: #64748b;
  font-weight: 600;
}

.strip-item strong {
  font-size: 0.96rem;
  font-weight: 800;
  color: #0f172a;
  font-variant-numeric: tabular-nums;
}

#stat-old-total {
  color: #2563eb;
  font-weight: 800;
}

#stat-new-total {
  color: #ea580c !important;
  font-weight: 950 !important;
  font-size: 1.05rem;
}

#stat-yearly-total {
  color: #ea580c !important;
  font-weight: 900;
}

.strip-divider {
  width: 1px;
  height: 22px;
  background: #e2e8f0;
}


@media (max-width: 860px) {
  body.cooperation-page .site-header {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.85) 75%, rgba(255, 255, 255, 0) 100%);
  }

  /* 标题自动换行，避免横向滚动 */
  .pain-main-title {
    white-space: normal;
    font-size: clamp(1.75rem, 7.5vw, 2.3rem);
    line-height: 1.38;
  }

  .coop-pain-section {
    padding: clamp(56px, 11vw, 76px) 0 clamp(24px, 4vw, 36px);
  }

  .pain-card-grid,
  .boost-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 32px;
  }

  .luxury-card {
    padding: 28px 24px 30px;
  }

  .card-serial {
    font-size: 2.3rem;
  }

  .coop-boost-section {
    padding: clamp(20px, 4vw, 36px) 0 clamp(60px, 12vw, 84px);
  }

  .title-subline {
    font-size: clamp(1.6rem, 6.5vw, 2.2rem);
  }

  .title-climax-line {
    font-size: clamp(2rem, 7.8vw, 2.8rem);
  }

  /* 利润计算器移动端单栏适配 */
  .calc-cockpit {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 32px;
  }

  .calc-controls-panel {
    padding: 24px 20px;
  }

  .calc-display-panel {
    padding: 24px 20px;
  }

  .sku-badge-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .sku-lock-box {
    margin-top: 10px;
    align-self: flex-start;
  }

  .chart-footer-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .strip-divider {
    display: none;
  }
}

/* ================================================================
   无障碍：尊重用户的减弱动态效果偏好
   ================================================================ */

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
    animation: none;
  }

  .float-orb,
  .pill-radar-dot,
  .rocket-flight-box,
  .climax-fire {
    animation: none;
  }

  .title-chunk--accent::after {
    animation: none;
    transform: scaleX(1);
  }

  .luxury-card,
  .luxury-card:hover,
  .luxury-card::after,
  .luxury-card:hover::after,
  .card-symbol-badge,
  .luxury-card:hover .card-symbol-badge,
  .card-serial,
  .luxury-card:hover .card-serial {
    transition: none;
    transform: none;
  }
}

/* ================================================================
   模块四：合作顾虑与保障 (Concerns & Assurance Section)
   ================================================================ */

.coop-concerns-section {
  padding: clamp(64px, 8vw, 96px) 0 clamp(32px, 4vw, 48px);
  background: #ffffff;
  position: relative;
  border-top: 1px solid #f1f5f9;
}

.section-concerns-header {
  text-align: center;
  max-width: 1100px;
  margin: 0 auto clamp(36px, 5vw, 54px);
}

/* 两行大标题相同字体大小，字间距大气舒展 */
.concerns-question-headline,
.concerns-main-title {
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.12em;
  text-indent: 0.12em;
  color: #0f172a;
}

.concerns-question-headline {
  margin-bottom: 8px;
  color: #2563eb; /* 科技蓝点睛提问 */
}

.concerns-lead-sub-2 {
  margin: 14px auto 0;
  max-width: none;
  white-space: nowrap;
  font-size: clamp(0.92rem, 1.25vw, 1.05rem);
  color: #64748b;
  line-height: 1.7;
}

/* 4 列严谨对称卡片栅格 */
.concerns-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  width: 100%;
}

.concern-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 24px 22px 22px;
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.03),
    0 8px 24px -4px rgba(15, 23, 42, 0.04);
  transition:
    transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1),
    border-color 320ms ease,
    box-shadow 320ms ease;
}

/* 顶部高光亮线装饰 */
.concern-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
  opacity: 0.85;
  transition: height 280ms ease, opacity 280ms ease;
}

.concern-card:hover {
  transform: translateY(-6px);
  border-color: #93c5fd;
  box-shadow:
    0 18px 38px -6px rgba(37, 99, 235, 0.13),
    0 6px 14px rgba(15, 23, 42, 0.04);
}

.concern-card:hover::before {
  height: 4px;
  opacity: 1;
}

/* 背景大号半透明数字水印 */
.concern-watermark-num {
  position: absolute;
  right: 14px;
  top: 8px;
  font-size: 3.8rem;
  font-weight: 950;
  color: #2563eb;
  opacity: 0.04;
  pointer-events: none;
  line-height: 1;
  user-select: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: -0.05em;
  z-index: 1;
}

.concern-card-body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.concern-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.concern-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #f1f5f9;
  color: #334155;
  font-size: 0.74rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.concern-num-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #2563eb;
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 900;
}

.concern-tag-sub {
  font-size: 0.72rem;
  font-weight: 750;
  color: #64748b;
  background: #f8fafc;
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
  letter-spacing: 0.02em;
}

/* 场景化科技图形徽章区 */
.concern-visual-art {
  width: 100%;
  height: 102px;
  border-radius: 12px;
  background: linear-gradient(145deg, #f8fafc 0%, #eff6ff 100%);
  border: 1px solid rgba(219, 234, 254, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  padding: 4px;
  box-shadow: inset 0 1px 3px rgba(37, 99, 235, 0.03);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.concern-card:hover .concern-visual-art {
  border-color: #93c5fd;
  box-shadow: inset 0 1px 4px rgba(37, 99, 235, 0.06), 0 4px 12px rgba(37, 99, 235, 0.07);
}

.concern-art-svg {
  width: 100%;
  height: 100%;
  max-height: 94px;
  display: block;
}


/* 问答对话栈区：Q 黑色徽标，A 科技蓝徽标 */
.concern-qa-stack {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 12px;
}

.concern-qa-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.concern-qa-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 5px;
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.concern-badge-q {
  background: #0f172a;
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
}

.concern-badge-a {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.28);
}

.concern-question {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 850;
  color: #0f172a; /* 黑色 */
  line-height: 1.4;
}

.concern-solution-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 900;
  color: #2563eb; /* 科技蓝 */
  line-height: 1.35;
  letter-spacing: -0.015em;
}

/* 正文描述：严格对齐，高度一致 */
.concern-description {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: #475569;
  line-height: 1.68;
  flex: 1;
  min-height: 72px; /* 保证 4 个卡片正文区域高度精准持平 */
}

.concern-highlight-footer {
  position: relative;
  z-index: 2;
  padding-top: 14px;
  border-top: 1px dashed #e2e8f0;
}

.concern-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #eff6ff;
  border: 1px solid rgba(37, 99, 235, 0.22);
  color: #1d4ed8;
  padding: 4px 10px;
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 800;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.concern-card:hover .concern-badge-pill {
  background: #dbeafe;
  border-color: #93c5fd;
}

.check-icon {
  width: 13px;
  height: 13px;
  color: #2563eb;
}

/* 入场交错动画 */
.concerns-card-grid .concern-card:nth-child(1).is-visible { animation-delay: 60ms; }
.concerns-card-grid .concern-card:nth-child(2).is-visible { animation-delay: 150ms; }
.concerns-card-grid .concern-card:nth-child(3).is-visible { animation-delay: 240ms; }
.concerns-card-grid .concern-card:nth-child(4).is-visible { animation-delay: 330ms; }

/* 响应式断点 */
@media (max-width: 1080px) {
  .concerns-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (max-width: 860px) {
  .concerns-lead-sub-2 {
    white-space: normal;
  }
}

@media (max-width: 640px) {
  .concerns-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .concern-card {
    padding: 22px 18px 20px;
  }

  .concern-description {
    min-height: auto;
  }
}
/* ================================================================
   模块五：专属深度定制 (Customization & OEM / ODM Section)
   ================================================================ */

.coop-custom-section {
  padding: clamp(32px, 4vw, 48px) 0 clamp(64px, 8vw, 96px);
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  position: relative;
  border-top: 1px solid #f1f5f9;
}

.section-custom-header {
  text-align: center;
  max-width: 980px;
  margin: 0 auto clamp(36px, 5vw, 54px);
}

.custom-main-title {
  margin: 0;
  font-size: clamp(1.85rem, 3.4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: 0.08em;
  color: #0f172a;
}

.custom-lead-sub {
  margin: 14px auto 0;
  font-size: clamp(0.92rem, 1.25vw, 1.05rem);
  color: #64748b;
  line-height: 1.7;
  max-width: 800px;
}

/* 4 列定制能力对称卡片网格 */
.custom-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  width: 100%;
}

.custom-feature-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 26px 22px 22px;
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.03),
    0 8px 24px -4px rgba(15, 23, 42, 0.04);
  transition:
    transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1),
    border-color 320ms ease,
    box-shadow 320ms ease;
}

/* 顶部科技渐变微光边条 */
.custom-feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  opacity: 0.85;
  transition: height 280ms ease, opacity 280ms ease;
}

.custom-feature-card:hover {
  transform: translateY(-6px);
  border-color: #93c5fd;
  box-shadow:
    0 18px 38px -6px rgba(37, 99, 235, 0.14),
    0 6px 14px rgba(15, 23, 42, 0.04);
}

.custom-feature-card:hover::before {
  height: 4px;
  opacity: 1;
}

/* 卡片背景半透明序号水印 */
.custom-card-watermark {
  position: absolute;
  right: 14px;
  top: 8px;
  font-size: 3.8rem;
  font-weight: 950;
  color: #2563eb;
  opacity: 0.035;
  pointer-events: none;
  line-height: 1;
  user-select: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: -0.05em;
  z-index: 1;
}

.custom-card-head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.custom-card-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid rgba(191, 219, 254, 0.6);
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.custom-feature-card:hover .custom-card-icon-wrap {
  transform: scale(1.08);
  background: #2563eb;
  color: #ffffff;
}

.custom-card-icon-wrap svg {
  width: 22px;
  height: 22px;
}

.custom-card-seq {
  font-size: 0.7rem;
  font-weight: 850;
  color: #94a3b8;
  letter-spacing: 0.06em;
  font-family: ui-monospace, monospace;
}

.custom-card-content {
  position: relative;
  z-index: 2;
  flex: 1;
}

.custom-card-title {
  margin: 0 0 10px;
  font-size: 1.15rem;
  font-weight: 850;
  color: #0f172a;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.custom-card-desc {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: #475569;
  line-height: 1.68;
}

.custom-card-footer {
  position: relative;
  z-index: 2;
  padding-top: 14px;
  border-top: 1px dashed #e2e8f0;
}

.custom-tag-pill {
  display: inline-flex;
  align-items: center;
  background: #eff6ff;
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: #1d4ed8;
  padding: 4px 10px;
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 800;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.custom-feature-card:hover .custom-tag-pill {
  background: #dbeafe;
  border-color: #93c5fd;
}

/* 入场交错动画 */
.custom-card-grid .custom-feature-card:nth-child(1).is-visible { animation-delay: 60ms; }
.custom-card-grid .custom-feature-card:nth-child(2).is-visible { animation-delay: 150ms; }
.custom-card-grid .custom-feature-card:nth-child(3).is-visible { animation-delay: 240ms; }
.custom-card-grid .custom-feature-card:nth-child(4).is-visible { animation-delay: 330ms; }

/* 响应式断点 */
@media (max-width: 1080px) {
  .custom-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (max-width: 640px) {
  .custom-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .custom-feature-card {
    padding: 22px 18px 20px;
  }
}

/* ================================================================
   页面最底部：蓝色合作咨询框 (Bottom Contact CTA Box)
   ================================================================ */

.coop-contact-cta-section {
  padding: 0 0 clamp(48px, 6vw, 80px);
  background: #ffffff;
  position: relative;
}

.coop-contact-blue-box {
  position: relative;
  overflow: hidden;
  border-radius: clamp(16px, 2.2vw, 22px);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 55%, #1e40af 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow:
    0 12px 32px -4px rgba(37, 99, 235, 0.35),
    0 4px 12px rgba(15, 23, 42, 0.08);
  transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 320ms ease;
}

.coop-contact-blue-box:hover {
  transform: translateY(-4px);
  box-shadow:
    0 20px 44px -6px rgba(37, 99, 235, 0.45),
    0 8px 18px rgba(15, 23, 42, 0.12);
}

/* 内部环境微光光斑 */
.coop-contact-glow-ambient {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.3) 0%, rgba(37, 99, 235, 0) 70%);
  pointer-events: none;
}

.coop-contact-interactive-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(24px, 3.5vw, 36px) clamp(20px, 4vw, 44px);
  text-decoration: none;
  color: #ffffff;
  position: relative;
  z-index: 2;
  cursor: pointer;
}

/* 纯白圆形电话图标徽章 */
.coop-phone-icon-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(44px, 5vw, 56px);
  height: clamp(44px, 5vw, 56px);
  border-radius: 50%;
  background: #ffffff;
  color: #2563eb;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.18);
  flex-shrink: 0;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.coop-contact-blue-box:hover .coop-phone-icon-badge {
  transform: scale(1.08) rotate(-8deg);
  background: #eff6ff;
  color: #1d4ed8;
}

.coop-phone-svg {
  width: clamp(22px, 2.6vw, 28px);
  height: clamp(22px, 2.6vw, 28px);
}

.coop-contact-info-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: clamp(6px, 1.2vw, 12px);
  font-family: inherit;
}

.coop-contact-label {
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 0.02em;
}

.coop-contact-phone-num {
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  font-weight: 950;
  color: #ffffff;
  letter-spacing: 0.05em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, system-ui, sans-serif;
  text-shadow: 0 2px 8px rgba(15, 23, 42, 0.2);
}

.coop-contact-person-name {
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-weight: 750;
  color: #bfdbfe;
  letter-spacing: 0.04em;
}

@media (max-width: 640px) {
  .coop-contact-interactive-card {
    flex-direction: column;
    text-align: center;
    gap: 14px;
    padding: 24px 16px;
  }

  .coop-contact-info-row {
    justify-content: center;
    gap: 6px;
  }
}

/* 顶部 Banner 下方的高亮联系栏（内含 Slogan 服务承诺） */
.coop-contact-slim-bar {
  margin-top: clamp(12px, 1.6vw, 18px);
  position: relative;
  overflow: hidden;
  border-radius: clamp(14px, 1.8vw, 18px);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 55%, #1e40af 100%);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow:
    0 8px 24px -4px rgba(37, 99, 235, 0.38),
    0 4px 12px rgba(15, 23, 42, 0.08);
  transition: transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 260ms ease;
  padding: clamp(14px, 1.6vw, 20px) clamp(16px, 2.5vw, 32px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.3vw, 16px);
}

.coop-contact-slim-bar:hover {
  transform: translateY(-2px);
  box-shadow:
    0 14px 32px -4px rgba(37, 99, 235, 0.46),
    0 6px 16px rgba(15, 23, 42, 0.12);
}

.coop-contact-slim-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 1.5vw, 16px);
  padding: 0;
  text-decoration: none;
  color: #ffffff;
}

.coop-phone-icon-badge--slim {
  width: clamp(34px, 3.8vw, 42px) !important;
  height: clamp(34px, 3.8vw, 42px) !important;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.22);
}

.coop-phone-icon-badge--slim .coop-phone-svg {
  width: clamp(18px, 2vw, 22px) !important;
  height: clamp(18px, 2vw, 22px) !important;
}

.coop-contact-info-row--slim .coop-contact-label {
  font-size: clamp(1rem, 1.25vw, 1.25rem) !important;
}

.coop-contact-info-row--slim .coop-contact-phone-num {
  font-size: clamp(1.35rem, 1.8vw, 1.7rem) !important;
}

.coop-contact-info-row--slim .coop-contact-person-name {
  font-size: clamp(1rem, 1.25vw, 1.2rem) !important;
  font-weight: 600;
}

/* 蓝色横条内的服务承诺 Slogan 行 */
.coop-contact-bar-slogan {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 1.8vw, 24px);
  flex-wrap: wrap;
  padding-top: clamp(8px, 1.1vw, 12px);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  width: 100%;
  color: #ffffff;
  font-size: clamp(1rem, 1.22vw, 1.15rem);
  letter-spacing: 0.3px;
  text-shadow: 0 1px 3px rgba(15, 23, 42, 0.25);
}

.coop-bar-slogan-item {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-weight: 500;
  white-space: nowrap;
}

.coop-bar-slogan-num {
  font-size: 1.35em;
  font-weight: 800;
  color: #fde047;
  margin: 0 2px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Trebuchet MS", sans-serif;
  line-height: 1;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.coop-bar-slogan-dot {
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
  user-select: none;
}

@media (max-width: 640px) {
  .coop-contact-slim-bar {
    padding: 14px 12px;
    gap: 8px;
  }
  .coop-contact-bar-slogan {
    gap: 6px 12px;
    font-size: 0.92rem;
  }
  .coop-bar-slogan-dot {
    display: none;
  }
}

/* ================================================================
   侧边楼梯 Tab 导航 (Floating Side Nav / Scrollspy)
   ================================================================ */

/* 设置锚点跳转偏移，避免被吸顶导航栏遮挡 */
.coop-section {
  scroll-margin-top: 86px;
}

.coop-side-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 99;
  user-select: none;
  /* 紧贴主版心右侧外缘（红框位置），大屏下随版心对齐，屏幕缩窄时平滑贴边 */
  left: min(calc(50% + 678px), calc(100vw - 146px));
  right: auto;
}

.side-nav-rail {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(226, 232, 240, 0.88);
  border-radius: 16px;
  padding: 8px 6px;
  box-shadow:
    0 12px 32px -4px rgba(15, 23, 42, 0.09),
    0 4px 12px rgba(15, 23, 42, 0.04);
}

.side-nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 750;
  color: #64748b;
  position: relative;
  transition: all 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
  white-space: nowrap;
}

.side-nav-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #cbd5e1;
  flex-shrink: 0;
  transition: background 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.side-nav-num {
  font-size: 0.7rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  opacity: 0.75;
  font-weight: 800;
}

.side-nav-text {
  letter-spacing: 0.02em;
}

/* 鼠标悬浮未激活项 */
.side-nav-item:hover:not(.is-active) {
  background: #f1f5f9;
  color: #0f172a;
}

.side-nav-item:hover:not(.is-active) .side-nav-dot {
  background: #94a3b8;
  transform: scale(1.2);
}

/* 蓝色高亮激活状态 */
.side-nav-item.is-active {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow:
    0 4px 14px rgba(37, 99, 235, 0.35),
    0 1px 3px rgba(15, 23, 42, 0.08);
  transform: scale(1.02);
}

.side-nav-item.is-active .side-nav-dot {
  background: #ffffff;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.9);
  transform: scale(1.3);
}

.side-nav-item.is-active .side-nav-num {
  opacity: 1;
  color: rgba(255, 255, 255, 0.85);
}

/* 中等屏幕收缩为精致胶囊指示器，悬浮展开文字 */
@media (max-width: 1360px) and (min-width: 1025px) {
  .side-nav-text {
    display: none;
  }
  .side-nav-item {
    padding: 8px 10px;
  }
  .side-nav-rail:hover .side-nav-text {
    display: inline;
  }
  .side-nav-rail:hover .side-nav-item {
    padding: 7px 12px;
  }
}

/* 移动端与平板隐藏，避免遮挡正文 */
@media (max-width: 1024px) {
  .coop-side-nav {
    display: none;
  }
}