/* ==========================================================================
   青云梯 (QingYunTi) - 3D 软萌粘土·立体轻潮风 (3D Claymorphism / Notion 潮玩风)
   Theme: Style #5 - Pastel Cloud & Bouncy Clay
   ========================================================================== */

:root {
  --bs-font-sans-serif: -apple-system, BlinkMacSystemFont, "Plus Jakarta Sans", "Quicksand", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;

  /* 3D 粘土主题色系：马卡龙天青、薄荷绿与活力珊瑚橙 */
  --c-p:       #0284c7;  /* 核心天青 (Sky 600) */
  --c-p-l:     #38bdf8;  /* 亮青云彩 (Sky 400) */
  --c-p-d:     #0369a1;  /* 深蓝稳固 (Sky 700) */
  --c-mint:    #10b981;  /* 薄荷生机绿 */
  --c-mint-l:  #6ee7b7;  /* 嫩芽绿 */
  --c-coral:   #f97316;  /* 活力珊瑚橙 (最受欢迎徽章) */
  --c-coral-l: #fb923c;  /* 浅暖橙 */
  --c-pink:    #f472b6;  /* 梦幻粉彩 */

  /* 软萌粘土底色与文字层级 */
  --c-bg:      #f4f8fc;  /* 柔和奶油云朵浅灰蓝 */
  --c-card:    #ffffff;  /* 粘土白 */
  --c-text:    #0f172a;  /* 深石板灰 (Slate 900) - 柔和高对比 */
  --c-text2:   #475569;  /* 中度文字 (Slate 600) */
  --c-text3:   #94a3b8;  /* 浅灰注释 (Slate 400) */

  /* 粘土立体质感参数 (内发光 + 柔和外弥散阴影) */
  --c-border:       rgba(56, 189, 248, 0.24);
  --c-glow:         rgba(2, 132, 199, 0.12);
  --clay-shadow:    0 16px 36px -10px rgba(14, 165, 233, 0.14), inset 0 3px 6px rgba(255, 255, 255, 0.95), inset 0 -3px 6px rgba(14, 165, 233, 0.05);
  --clay-shadow-hover: 0 24px 48px -10px rgba(14, 165, 233, 0.22), inset 0 4px 8px rgba(255, 255, 255, 1), inset 0 -4px 8px rgba(14, 165, 233, 0.08);
  --clay-radius:    26px;
  --spring-bounce:  all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── 全局重置与平滑滚动 ── */
body {
  font-family: var(--bs-font-sans-serif);
  background-color: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(at 10% 20%, rgba(56, 189, 248, 0.08) 0px, transparent 50%),
    radial-gradient(at 90% 80%, rgba(16, 185, 129, 0.06) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(244, 114, 182, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
}

a { 
  text-decoration: none; 
  transition: var(--spring-bounce);
}

:where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid rgba(2, 132, 199, 0.4);
  outline-offset: 3px;
}

/* ── 3D 蓬松云朵背景 Blobs ── */
.bg-blobs {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.blob {
  position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.45;
  animation: cloudSway 22s infinite alternate ease-in-out;
}
.blob-1 { 
  width: 720px; height: 720px; 
  background: radial-gradient(circle, rgba(56, 189, 248, 0.35), transparent 70%); 
  top: -240px; left: -200px; 
}
.blob-2 { 
  width: 580px; height: 580px; 
  background: radial-gradient(circle, rgba(110, 231, 183, 0.3), transparent 70%); 
  bottom: -150px; right: -120px; 
  animation-delay: -8s; 
}
.blob-3 { 
  width: 420px; height: 420px; 
  background: radial-gradient(circle, rgba(251, 146, 60, 0.22), transparent 70%); 
  top: 35%; right: 10%; 
  animation-delay: -14s; 
}
@keyframes cloudSway { 
  0% { transform: translate(0, 0) scale(1); } 
  50% { transform: translate(40px, 30px) scale(1.08); } 
  100% { transform: translate(-30px, 20px) scale(0.95); } 
}

/* ── 页面主容器 ── */
.page-wrap { position: relative; z-index: 1; }

/* ── 3D 胶囊顶栏 Navbar ── */
.navbar-wrap {
  padding: 16px 0;
}
.site-navbar {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: 24px;
  box-shadow: 
    0 12px 32px -8px rgba(14, 165, 233, 0.12),
    inset 0 3px 6px rgba(255, 255, 255, 0.9),
    inset 0 -2px 4px rgba(14, 165, 233, 0.04);
  padding: 12px 24px !important;
  transition: var(--spring-bounce);
}
.site-navbar:hover {
  box-shadow: 
    0 16px 40px -8px rgba(14, 165, 233, 0.16),
    inset 0 3px 6px rgba(255, 255, 255, 1);
}
.navbar-logo {
  height: 42px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(14, 165, 233, 0.15));
}
.footer-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
  display: block;
}
.navbar-brand-text { 
  font-size: 21px; 
  font-weight: 900; 
  color: var(--c-text); 
  letter-spacing: -0.5px;
}
.site-navbar .nav-link {
  color: var(--c-text2);
  font-size: 14.5px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 999px;
  transition: var(--spring-bounce);
}
.site-navbar .nav-link:hover {
  color: var(--c-p);
  background: rgba(56, 189, 248, 0.1);
  transform: translateY(-1px);
}

/* ── 3D 粘土微弹按钮 (Clay Buttons) ── */
.btn-primary-custom {
  background: linear-gradient(180deg, #38bdf8 0%, #0284c7 100%);
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  font-weight: 800;
  padding: 10px 24px;
  box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 0.65),
    inset 0 -3px 0 rgba(3, 105, 161, 0.75),
    0 8px 22px rgba(2, 132, 199, 0.32);
  transition: var(--spring-bounce);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.btn-primary-custom:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 0.75),
    inset 0 -4px 0 rgba(3, 105, 161, 0.8),
    0 14px 28px rgba(2, 132, 199, 0.4);
  color: #fff !important;
}
.btn-primary-custom:active {
  transform: translateY(2px) scale(0.98);
  box-shadow: 
    inset 0 2px 3px rgba(0, 0, 0, 0.15),
    inset 0 -1px 0 rgba(3, 105, 161, 0.75),
    0 4px 10px rgba(2, 132, 199, 0.25);
}

.btn-outline-custom {
  border: 2px solid rgba(56, 189, 248, 0.35);
  color: var(--c-p-d);
  background: #ffffff;
  border-radius: 999px;
  font-weight: 700;
  padding: 10px 24px;
  box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 0.9),
    0 6px 18px rgba(14, 165, 233, 0.08);
  transition: var(--spring-bounce);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-outline-custom:hover {
  border-color: var(--c-p);
  background: rgba(56, 189, 248, 0.08);
  color: var(--c-p);
  transform: translateY(-2px);
  box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 1),
    0 10px 24px rgba(14, 165, 233, 0.14);
}

.btn-ghost-custom {
  color: var(--c-text2);
  font-weight: 700;
  background: transparent;
  border: none;
  padding: 8px 16px;
  border-radius: 999px;
  transition: var(--spring-bounce);
}
.btn-ghost-custom:hover { 
  color: var(--c-p);
  background: rgba(56, 189, 248, 0.1);
  transform: translateY(-1px);
}

.btn-white-custom {
  background: #ffffff;
  color: var(--c-p) !important;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  font-weight: 900;
  font-size: 1.05rem;
  padding: 14px 38px;
  box-shadow: 
    inset 0 3px 6px rgba(255, 255, 255, 1),
    inset 0 -3px 0 rgba(2, 132, 199, 0.18),
    0 12px 30px rgba(0, 0, 0, 0.12);
  transition: var(--spring-bounce);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-white-custom:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 
    inset 0 3px 6px rgba(255, 255, 255, 1),
    inset 0 -4px 0 rgba(2, 132, 199, 0.22),
    0 18px 40px rgba(0, 0, 0, 0.18);
  color: var(--c-p-d) !important;
}
.btn-white-custom:active {
  transform: translateY(2px) scale(0.98);
}

/* ── 首屏 Hero 区域 ── */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 13.5px;
  font-weight: 800;
  color: var(--c-p);
  box-shadow: 
    0 8px 20px -4px rgba(14, 165, 233, 0.15),
    inset 0 2px 4px rgba(255, 255, 255, 0.9);
}
.badge-dot {
  width: 9px;
  height: 9px;
  background: var(--c-mint);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.25);
  animation: pulseDot 2s infinite ease-in-out;
}
@keyframes pulseDot { 
  0%, 100% { transform: scale(1); opacity: 1; } 
  50% { transform: scale(1.3); opacity: 0.7; } 
}

.hero-title { 
  font-size: clamp(38px, 6vw, 56px); 
  font-weight: 900; 
  letter-spacing: -1.2px; 
  line-height: 1.12; 
  color: var(--c-text);
}
.hero-title .highlight {
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { 
  font-size: 20px; 
  font-weight: 800; 
  color: var(--c-p); 
  display: inline-block;
  padding: 4px 12px;
  background: rgba(56, 189, 248, 0.1);
  border-radius: 10px;
}
.hero-desc { 
  font-size: 16.5px; 
  color: var(--c-text2); 
  line-height: 1.8; 
}
.trust-item { 
  font-size: 13.5px; 
  color: var(--c-text2); 
  font-weight: 700;
  background: #ffffff;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.2);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.06);
}

/* ── Hero Banner 3D 浮雕像框 ── */
.hero-banner {
  max-width: 540px;
  position: relative;
}
.hero-banner-img-wrap {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  border: 6px solid #ffffff;
  box-shadow: 
    0 24px 60px -10px rgba(14, 165, 233, 0.2),
    inset 0 2px 6px rgba(255, 255, 255, 0.8);
  animation: floatBanner 6s ease-in-out infinite;
}
@keyframes floatBanner {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero-banner-img {
  width: 100%;
  height: 390px;
  object-fit: cover;
  display: block;
}
.hero-banner-img-wrap::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(56, 189, 248, 0.12) 0%, rgba(15, 23, 42, 0.22) 100%);
  pointer-events: none;
}

/* ── Hero Banner 3D 浮动粘土小徽章 ── */
.hb-badge {
  position: absolute; 
  z-index: 2;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: 18px;
  padding: 10px 18px;
  box-shadow: 
    0 12px 28px -6px rgba(14, 165, 233, 0.2),
    inset 0 2px 4px rgba(255, 255, 255, 0.9);
  white-space: nowrap;
  animation: badgeFloat 4s ease-in-out infinite alternate;
}
.hb-badge-tl { top: 20px; left: 20px; }
.hb-badge-tr { top: 20px; right: 20px; animation-delay: -2s; }
.hb-badge-b {
  bottom: 20px; left: 50%; transform: translateX(-50%);
  font-size: 13.5px; font-weight: 700; color: var(--c-text2);
  display: flex; align-items: center; gap: 8px;
  border-radius: 999px; padding: 10px 24px;
  animation-delay: -1s;
}
.hb-badge-label { font-size: 11px; color: var(--c-text3); font-weight: 700; margin-bottom: 2px; }
.hb-badge-value { font-size: 17px; font-weight: 900; color: var(--c-p); line-height: 1; }
.hb-badge-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--c-mint); flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
  animation: pulseDot 2s infinite ease-in-out;
}
@keyframes badgeFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

/* ── 标签与章节标题 ── */
.sec-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 800;
  color: var(--c-p);
  background: #ffffff;
  border: 2px solid rgba(56, 189, 248, 0.25);
  padding: 6px 18px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  box-shadow: 
    0 6px 16px rgba(14, 165, 233, 0.08),
    inset 0 2px 4px rgba(255, 255, 255, 0.9);
}
.sec-title { 
  font-size: clamp(28px, 4.5vw, 40px); 
  font-weight: 900; 
  letter-spacing: -0.8px; 
  color: var(--c-text); 
}
.sec-desc { 
  font-size: 16px; 
  color: var(--c-text2); 
  line-height: 1.7; 
}

/* ── 3D 粘土统计卡片 (.stat-card) ── */
.stat-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
}
.stat-card:hover { 
  transform: translateY(-8px) scale(1.02); 
  box-shadow: var(--clay-shadow-hover);
}
.stat-icon { 
  font-size: 34px; 
  display: inline-block;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.06));
}
.stat-num {
  font-size: 38px;
  font-weight: 900;
  line-height: 1.1;
  background: linear-gradient(135deg, #0284c7 0%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-lbl { 
  font-size: 13px; 
  color: var(--c-text3); 
  font-weight: 700; 
}

/* ── 3D 粘土特性卡片 (.feat-card) ── */
.feat-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 32px 28px;
  height: 100%;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
}
.feat-card:hover { 
  transform: translateY(-8px) scale(1.02); 
  box-shadow: var(--clay-shadow-hover);
}
.feat-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: 20px;
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  border: 2px solid #ffffff;
  box-shadow: 
    0 8px 16px rgba(14, 165, 233, 0.16),
    inset 0 3px 5px rgba(255, 255, 255, 0.9);
}
.feat-title { 
  font-size: 18px; 
  font-weight: 800; 
  color: var(--c-text); 
}
.feat-desc { 
  font-size: 14.5px; 
  color: var(--c-text2); 
  line-height: 1.7; 
}

/* ── 3D 粘土套餐卡片 (.pricing-card) ── */
.pricing-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: 30px;
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--clay-shadow);
  height: 100%;
  transition: var(--spring-bounce);
}
.pricing-card:hover { 
  transform: translateY(-8px); 
  box-shadow: var(--clay-shadow-hover);
}

/* VIP2 最受欢迎卡片 (高亮粘土浮起) */
.pricing-card.hot {
  border: 2.5px solid rgba(56, 189, 248, 0.5);
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 100%);
  box-shadow: 
    0 24px 50px -10px rgba(14, 165, 233, 0.25),
    inset 0 3px 6px rgba(255, 255, 255, 1),
    inset 0 -3px 6px rgba(14, 165, 233, 0.08);
  transform: scale(1.03);
}
.pricing-card.hot:hover { 
  transform: scale(1.03) translateY(-8px); 
  box-shadow: 
    0 30px 60px -10px rgba(14, 165, 233, 0.3),
    inset 0 4px 8px rgba(255, 255, 255, 1);
}

/* 粘土微凸徽章 */
.price-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f97316 0%, #fb7185 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 20px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 
    0 8px 18px rgba(249, 115, 22, 0.35),
    inset 0 2px 4px rgba(255, 255, 255, 0.5);
}

.plan-name { 
  font-size: 17px; 
  font-weight: 800; 
  color: var(--c-p); 
}
.plan-price { 
  font-size: 52px; 
  font-weight: 900; 
  line-height: 1; 
  color: var(--c-text); 
  letter-spacing: -1px;
}
.plan-price sup { 
  font-size: 24px; 
  vertical-align: top; 
  margin-top: 10px; 
  display: inline-block; 
  color: var(--c-text2); 
  font-weight: 700; 
}
.plan-price small { 
  font-size: 15px; 
  color: var(--c-text3); 
  font-weight: 600; 
}
.plan-sub { 
  font-size: 13.5px; 
  color: var(--c-text3); 
  font-weight: 600;
}
.plan-feats { 
  font-size: 14px; 
  color: var(--c-text2); 
  flex: 1; 
}
.plan-feats li { 
  display: flex; 
  align-items: center; 
  gap: 10px; 
  margin-bottom: 12px; 
  font-weight: 600;
}
.ck { 
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  color: var(--c-mint);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 900;
  flex-shrink: 0;
}
.plan-btn {
  display: block;
  text-align: center;
  border-radius: 999px;
  padding: 14px;
  font-size: 15.5px;
  font-weight: 800;
  transition: var(--spring-bounce);
}

/* ── 3D 粘土场景卡片 (.scene-card) ── */
.scene-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 24px 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
  height: 100%;
}
.scene-card:hover { 
  transform: translateY(-6px) scale(1.02); 
  box-shadow: var(--clay-shadow-hover);
}
.scene-icon { 
  font-size: 32px; 
  flex-shrink: 0; 
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.06));
}
.scene-title { 
  font-size: 16px; 
  font-weight: 800; 
  color: var(--c-text); 
}
.scene-desc { 
  font-size: 13.5px; 
  color: var(--c-text2); 
  line-height: 1.65; 
}

/* ── 3D 评价卡片 (.testi-card) ── */
.testi-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
  height: 100%;
}
.testi-card:hover { 
  transform: translateY(-6px); 
  box-shadow: var(--clay-shadow-hover);
}
.stars { 
  color: #fbbf24; 
  letter-spacing: 2px; 
  font-size: 18px;
  filter: drop-shadow(0 2px 4px rgba(251, 191, 36, 0.3));
}
.testi-text { 
  font-size: 14.5px; 
  color: var(--c-text2); 
  line-height: 1.75; 
  flex: 1; 
}
.avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 
    0 6px 14px rgba(2, 132, 199, 0.3),
    inset 0 2px 4px rgba(255, 255, 255, 0.5);
}
.author-name { 
  font-size: 15px; 
  font-weight: 800; 
  color: var(--c-text); 
}
.author-role { 
  font-size: 12.5px; 
  color: var(--c-p); 
  font-weight: 700;
}

/* ── 3D FAQ 手风琴 (.faq-accordion) ── */
.faq-accordion .accordion-item {
  border: 2px solid rgba(255, 255, 255, 0.95);
  background: #ffffff;
  border-radius: 20px !important;
  overflow: hidden;
  margin-bottom: 14px;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
}
.faq-accordion .accordion-item:hover { 
  transform: translateY(-2px);
  box-shadow: var(--clay-shadow-hover);
}
.faq-accordion .accordion-button {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--c-text);
  background: #ffffff;
  box-shadow: none;
  padding: 18px 24px;
}
.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--c-p);
  background: rgba(56, 189, 248, 0.08);
}
.faq-accordion .accordion-body {
  font-size: 14.5px;
  color: var(--c-text2);
  line-height: 1.75;
  background: #ffffff;
  padding: 16px 24px 22px;
}

/* ── 3D 粘土 CTA 区域 (.cta-box) ── */
.cta-box {
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 50%, #10b981 100%);
  border: 4px solid rgba(255, 255, 255, 0.8);
  border-radius: 36px;
  padding: 72px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 
    0 24px 60px -10px rgba(2, 132, 199, 0.35),
    inset 0 4px 8px rgba(255, 255, 255, 0.4),
    inset 0 -4px 8px rgba(0, 0, 0, 0.1);
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  top: -100px;
  right: -50px;
  filter: blur(40px);
  pointer-events: none;
}
.cta-title { 
  font-size: clamp(28px, 5vw, 44px); 
  font-weight: 900; 
  color: #fff; 
  position: relative; 
  letter-spacing: -0.5px;
}
.cta-sub { 
  font-size: 18px; 
  color: rgba(255, 255, 255, 0.95); 
  position: relative; 
  font-weight: 700;
}
.cta-note { 
  font-size: 13.5px; 
  color: rgba(255, 255, 255, 0.85); 
  position: relative; 
}

/* ── 页脚 Footer ── */
.site-footer { 
  background: #ffffff; 
  border-top: 2px solid rgba(56, 189, 248, 0.15); 
}
.footer-tagline { 
  font-size: 13.5px; 
  color: var(--c-text2); 
  line-height: 1.7; 
}
.fcol-title { 
  font-size: 13px; 
  font-weight: 800; 
  color: var(--c-text); 
  text-transform: uppercase; 
  letter-spacing: 0.8px; 
}
.fcol a { 
  font-size: 13.5px; 
  color: var(--c-text3); 
  display: block; 
  transition: var(--spring-bounce); 
}
.fcol a:hover { 
  color: var(--c-p); 
  transform: translateX(4px);
}
.footer-copy { 
  font-size: 12.5px; 
  color: var(--c-text3); 
  font-weight: 600;
}

/* ── 进场淡入动效 ── */
.fade-up { opacity: 1; transform: none; }
.has-intersection-observer .fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.has-intersection-observer .fade-up.visible { 
  opacity: 1; 
  transform: translateY(0); 
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .has-intersection-observer .fade-up {
    opacity: 1;
    transform: none;
  }
}

/* ── 内页 Page Hero ── */
.page-hero {
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 60%, #10b981 100%);
  padding: 72px 0 60px;
  position: relative; 
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(2, 132, 199, 0.15);
}
.page-hero-title { 
  font-size: clamp(30px, 5vw, 44px); 
  font-weight: 900; 
  color: #fff; 
  position: relative; 
}
.page-hero-sub { 
  font-size: 16.5px; 
  color: rgba(255, 255, 255, 0.9); 
  position: relative; 
  font-weight: 600;
}
.page-hero-breadcrumb { 
  font-size: 13.5px; 
  color: rgba(255, 255, 255, 0.85); 
  position: relative; 
  font-weight: 600;
}
.page-hero-breadcrumb a { 
  color: #fff; 
  text-decoration: underline; 
  text-underline-offset: 3px;
}

/* ── 内容卡片 Content Card ── */
.content-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 42px 46px;
  box-shadow: var(--clay-shadow);
}
@media (max-width: 576px) { .content-card { padding: 28px 20px; } }

.content-card h2 {
  font-size: 21px; 
  font-weight: 900; 
  color: var(--c-text);
  border-left: 5px solid var(--c-p); 
  padding-left: 14px;
  margin-top: 36px; 
  margin-bottom: 16px;
}
.content-card h2:first-child { margin-top: 0; }
.content-card p { 
  font-size: 15px; 
  color: var(--c-text2); 
  line-height: 1.8; 
  margin-bottom: 14px; 
}
.content-card ul { 
  font-size: 15px; 
  color: var(--c-text2); 
  line-height: 1.8; 
  padding-left: 20px; 
  margin-bottom: 14px; 
}
.content-card ul li { margin-bottom: 8px; }
.content-card .last-updated { font-size: 13px; color: var(--c-text3); }

/* ── 联系方式卡片 Contact Info Card ── */
.contact-info-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 28px;
  box-shadow: var(--clay-shadow);
  height: 100%;
  transition: var(--spring-bounce);
}
.contact-info-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--clay-shadow-hover);
}
.contact-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  border: 2px solid #ffffff;
  box-shadow: 
    0 8px 16px rgba(14, 165, 233, 0.16),
    inset 0 2px 4px rgba(255, 255, 255, 0.8);
  flex-shrink: 0;
}

/* ── 关于我们团队卡片 Team Card ── */
.team-card {
  background: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--clay-radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--clay-shadow);
  transition: var(--spring-bounce);
  height: 100%;
}
.team-card:hover { 
  transform: translateY(-6px); 
  box-shadow: var(--clay-shadow-hover);
}
.team-avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 900;
  color: #fff;
  box-shadow: 
    0 10px 24px rgba(2, 132, 199, 0.35),
    inset 0 3px 6px rgba(255, 255, 255, 0.6);
}
.team-name { 
  font-size: 17px; 
  font-weight: 900; 
  color: var(--c-text); 
}
.team-role { 
  font-size: 13.5px; 
  color: var(--c-p); 
  font-weight: 700; 
}
.team-bio { 
  font-size: 13.5px; 
  color: var(--c-text2); 
  line-height: 1.65; 
  margin-top: 10px; 
}