/* ============================================================
   AI云学院 · 深浅混合滚动叙事风
   Hero：深色霓虹冲击区；内容区：亮色质感卡片
   ============================================================ */

/* ===== 色彩令牌 ===== */
:root{
  /* 亮色内容区 */
  --bg:#FFFFFF;
  --bg-soft:#F7F8FA;
  --primary:#FF6B35;
  --primary-dark:#E55A2B;
  --primary-soft:#FFF3ED;
  --text:#1F2937;
  --text-soft:#6B7280;
  --border:#E5E7EB;
  --status-ok:#10B981;
  --status-warn:#F59E0B;
  --shadow:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
  --shadow-hover:0 12px 28px -8px rgba(31,41,55,0.18),0 2px 6px rgba(31,41,55,0.06);
  --shadow-card:0 4px 12px rgba(31,41,55,0.06),0 1px 3px rgba(31,41,55,0.04);
  --shadow-card-hover:0 18px 40px -12px rgba(255,107,53,0.22),0 4px 12px rgba(31,41,55,0.08);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --maxw:1200px;

  /* 深色 Hero */
  --hero-bg:#0A0E1A;
  --hero-bg-2:#0E1424;
  --neon-orange:#FF6B35;
  --neon-orange-2:#FF8C42;
  --neon-cyan:#00D4FF;
  --hero-text:#F2F4F8;
  --hero-text-soft:#9BA3B5;
  --glass-bg:rgba(255,255,255,0.04);
  --glass-border:rgba(255,255,255,0.10);
}

/* ===== 基础重置 ===== */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Inter",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem;}

/* ===== 导航栏 · SaaS 商务简洁风 ===== */
/* 三段式布局：左 Logo | 中 导航链接 | 右 CTA 动作区 */
.navbar{
  position:sticky;top:0;z-index:100;
  /* 亮色态：低透明白 + 强毛玻璃 + 极细半透灰线收边 */
  background:rgba(255,255,255,0.78);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid rgba(15,23,42,0.06);
  /* 完全去掉 box-shadow，只做底色/边框/毛玻璃的过渡 */
  transition:background .35s ease,border-color .35s ease,backdrop-filter .35s ease;
}
.nav-container{
  max-width:var(--maxw);
  margin:0 auto;
  /* 略微加高，顶部有呼吸感 */
  padding:1.05rem 1.5rem;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:2rem;
}

/* ===== Logo 区：简洁专业，去霓虹阴影 ===== */
.logo{
  display:flex;align-items:center;gap:0.55rem;
  color:var(--text);
  transition:transform .2s ease, color .2s ease;
}
.logo:hover{transform:translateY(-1px); color:var(--primary);}
.logo:hover .logo-icon{transform:scale(1.05);}
.logo-icon{
  width:30px;height:30px;
  background:var(--primary);
  color:#fff;
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:0.95rem;font-weight:700;
  transition:transform .2s ease, background .2s ease, color .2s ease;
}
/* 字重分层：整体 700，span（云学院）降为 600 并加主色——配合视觉锚点，层次感足够 */
.logo-text{font-size:1.15rem;font-weight:700;letter-spacing:-0.015em;line-height:1;}
.logo-text span{color:var(--primary);font-weight:600;}

/* ===== 导航链接：淡橙胶囊选中态 ===== */
.nav-links{
  display:flex;align-items:center;
  gap:0.35rem;
  justify-content:flex-start;
  padding-left:0.5rem;
}
.nav-links a{
  font-size:0.92rem;
  font-weight:500;
  letter-spacing:-0.01em;
  color:var(--text-soft);
  /* 默认无线型 */
  padding:0.45rem 0.95rem;
  border-radius:999px;
  border:1px solid transparent;
  transition:background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
/* hover：淡橙胶囊 + 橙色文字 —— 用形状做进入态，替代纯变色 */
.nav-links a:hover{
  background:rgba(255,107,53,0.06);
  color:var(--primary);
}
/* active / 当前页：胶囊更实 + 深橙字 + 极细描边 + 内收 2px 橙底锚线 */
.nav-links a.active,
.nav-links a.active-nav{
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-color:rgba(255,107,53,0.18);
  box-shadow:inset 0 -2px 0 var(--primary);
}

/* ===== 右侧动作区：CTA + 移动端汉堡 ===== */
.nav-actions{
  display:flex;align-items:center;gap:0.8rem;
  justify-content:flex-end;
}
/* CTA 主按钮：层级拉高，默认无阴影，hover 才出橙阴影 */
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:0.6rem 1.35rem;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  font-size:0.88rem;
  font-weight:600;
  letter-spacing:-0.005em;
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease, border-color .2s ease;
}
.nav-cta:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(255,107,53,0.28);
  color:#fff;
}

/* 移动端汉堡按钮：胶囊化 36px 圆形 */
.menu-btn{
  display:none;
  width:36px;height:36px;
  border-radius:50%;
  font-size:1.1rem;
  cursor:pointer;
  background:rgba(15,23,42,0.04);
  border:1px solid rgba(15,23,42,0.06);
  color:var(--text);
  align-items:center;justify-content:center;
  transition:background .2s ease, color .2s ease, border-color .2s ease;
}
.menu-btn:hover{background:rgba(255,107,53,0.08);color:var(--primary);}

/* ===== 首页深色透明态（Hero 顶部） ===== */
/* 顶部渐隐蒙版 + 底部 1px 半透明白锚线，收住导航边界 */
.home .navbar{
  background:linear-gradient(180deg, rgba(10,14,26,0.62) 0%, rgba(10,14,26,0) 100%);
  backdrop-filter:none;
  -webkit-backdrop-filter:none;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.home .navbar .logo{color:#fff;}
.home .navbar .logo:hover{color:#fff; opacity:0.92;}
.home .navbar .logo-icon{background:#fff;color:var(--primary);}
/* 深色态导航链接：白灰字 → hover 半透明白胶囊 + 纯白字 */
.home .navbar .nav-links a{color:rgba(255,255,255,0.78);}
.home .navbar .nav-links a:hover{
  background:rgba(255,255,255,0.08);
  color:#fff;
  border-color:transparent;
  box-shadow:none;
}
/* 深色态当前页：更实的白胶囊（0.16）+ 纯白字 —— 不用橙色，避免霓虹撞色 */
.home .navbar .nav-links a.active,
.home .navbar .nav-links a.active-nav{
  background:rgba(255,255,255,0.16);
  color:#fff;
  border-color:rgba(255,255,255,0.18);
  box-shadow:none;
}
/* 深色态汉堡：白描边 */
.home .navbar .menu-btn{
  background:rgba(255,255,255,0.06);
  border-color:rgba(255,255,255,0.16);
  color:#fff;
}
.home .navbar .menu-btn:hover{background:rgba(255,255,255,0.16);color:#fff;}
/* 深色态 CTA：空心白描边 —— 不抢眼球但点击意图明确 */
.home .navbar .nav-cta{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,0.28);
}
.home .navbar .nav-cta:hover{
  background:rgba(255,255,255,0.08);
  border-color:rgba(255,255,255,0.5);
  transform:translateY(-1px);
  box-shadow:0 4px 14px rgba(255,255,255,0.10);
  color:#fff;
}

/* ===== 首页滚动后 → 亮色态（直接复用通用亮色态选择器） ===== */
.home .navbar.nav-scrolled{
  background:rgba(255,255,255,0.78);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid rgba(15,23,42,0.06);
}
.home .navbar.nav-scrolled .logo{color:var(--text);}
.home .navbar.nav-scrolled .logo:hover{color:var(--primary); opacity:1;}
.home .navbar.nav-scrolled .logo-icon{background:var(--primary);color:#fff;}
.home .navbar.nav-scrolled .menu-btn{background:rgba(15,23,42,0.04);border-color:rgba(15,23,42,0.06);color:var(--text);}
.home .navbar.nav-scrolled .menu-btn:hover{background:rgba(255,107,53,0.08);color:var(--primary);}
.home .navbar.nav-scrolled .nav-links a{color:var(--text-soft);}
.home .navbar.nav-scrolled .nav-links a:hover{background:rgba(255,107,53,0.06);color:var(--primary);}
.home .navbar.nav-scrolled .nav-links a.active,
.home .navbar.nav-scrolled .nav-links a.active-nav{
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-color:rgba(255,107,53,0.18);
  box-shadow:inset 0 -2px 0 var(--primary);
}
.home .navbar.nav-scrolled .nav-cta{
  background:var(--primary);
  color:#fff;
  border:0;
}
.home .navbar.nav-scrolled .nav-cta:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(255,107,53,0.28);
  color:#fff;
}

/* ===== 按钮 ===== */
.btn-primary{
  display:inline-flex;align-items:center;gap:0.4rem;
  background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));
  color:#fff;
  padding:0.7rem 1.5rem;border-radius:var(--radius-sm);
  font-weight:600;font-size:0.95rem;border:none;cursor:pointer;
  box-shadow:0 4px 14px rgba(255,107,53,0.35);
  transition:transform .15s,box-shadow .2s,filter .2s;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(255,107,53,0.45);filter:brightness(1.05);}
.btn-secondary{
  display:inline-flex;align-items:center;gap:0.4rem;
  background:var(--bg);color:var(--text);
  padding:0.7rem 1.5rem;border-radius:var(--radius-sm);
  font-weight:600;font-size:0.95rem;border:1px solid var(--border);cursor:pointer;
  transition:border-color .2s,color .2s,transform .15s;
}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}

/* ===== Section ===== */
.section{padding:4.5rem 0;}
.section-soft{background:var(--bg-soft);}
.section-header{text-align:center;margin-bottom:2.8rem;}
.section-header h2{font-size:2rem;font-weight:800;margin-bottom:0.5rem;letter-spacing:-0.01em;}
.section-header p{color:var(--text-soft);font-size:1rem;}

/* ===== Hero 深色冲击区 ===== */
.hero{
  position:relative;
  background:radial-gradient(ellipse at 50% 0%,var(--hero-bg-2) 0%,var(--hero-bg) 60%);
  padding:7rem 0 5rem;
  overflow:hidden;
  min-height:88vh;
  display:flex;align-items:center;
  color:var(--hero-text);
}
/* Hero 背景网格点缀（克制冷调） */
.hero-grid-overlay{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,212,255,0.04) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse at center,#000 0%,transparent 75%);
  mask-image:radial-gradient(ellipse at center,#000 0%,transparent 75%);
}
.hero-particles{
  position:absolute;top:0;left:0;width:100%;height:100%;
  z-index:1;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:3;
  text-align:center;max-width:760px;margin:0 auto;
  width:100%;will-change:transform,opacity;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:0.4rem;
  padding:0.4rem 1rem;border-radius:999px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  color:var(--hero-text-soft);font-size:0.82rem;font-weight:500;
  margin-bottom:1.5rem;
}
.hero-eyebrow b{color:var(--neon-cyan);font-weight:600;}
.hero h1{
  font-size:3.4rem;font-weight:800;line-height:1.12;
  margin-bottom:1.1rem;letter-spacing:-0.02em;
  color:#fff;
}
.hero h1 .accent{
  background:linear-gradient(135deg,var(--neon-orange) 0%,var(--neon-orange-2) 35%,var(--neon-cyan) 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.hero-sub{color:var(--hero-text-soft);font-size:1.08rem;margin-bottom:2rem;max-width:560px;margin-left:auto;margin-right:auto;}
.hero .role-channels{margin-top:1.8rem;}

/* 玻璃态搜索框 */
.search-box{
  display:flex;gap:0.5rem;max-width:580px;margin:0 auto 1.2rem;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-radius:var(--radius);
  padding:0.5rem;
  box-shadow:0 8px 32px rgba(0,0,0,0.35),inset 0 1px 0 rgba(255,255,255,0.06);
  transition:border-color .3s,box-shadow .3s;
}
.search-box:focus-within{
  border-color:rgba(255,107,53,0.5);
  box-shadow:0 8px 32px rgba(0,0,0,0.35),0 0 30px rgba(255,107,53,0.18);
}
.search-box input{flex:1;border:none;outline:none;padding:0.8rem 1rem;font-size:1rem;background:transparent;color:#fff;}
.search-box input::placeholder{color:rgba(255,255,255,0.4);}
.search-box button{
  background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));
  color:#fff;border:none;padding:0 1.6rem;border-radius:var(--radius-sm);
  font-weight:600;font-size:0.95rem;cursor:pointer;
  box-shadow:0 4px 16px rgba(255,107,53,0.4);
  transition:transform .15s,box-shadow .2s;
}
.search-box button:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(255,107,53,0.5);}

/* 热门标签（深色玻璃） */
.search-tags{display:flex;flex-wrap:wrap;gap:0.5rem;justify-content:center;margin-top:1rem;}
.search-tag{
  background:var(--glass-bg);border:1px solid var(--glass-border);
  padding:0.35rem 0.9rem;border-radius:999px;font-size:0.82rem;
  color:var(--hero-text-soft);cursor:pointer;transition:all .2s;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.search-tag:hover{border-color:rgba(255,107,53,0.5);color:#fff;background:rgba(255,107,53,0.12);}

/* 角色化快速通道（深色玻璃） */
.role-channels{display:flex;gap:0.8rem;justify-content:center;flex-wrap:wrap;margin-top:1.8rem;}
.role-chip{
  background:var(--glass-bg);border:1px solid var(--glass-border);
  padding:0.6rem 1.3rem;border-radius:var(--radius-sm);
  font-size:0.92rem;font-weight:500;color:var(--hero-text);
  cursor:pointer;transition:all .2s;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.role-chip:hover{
  border-color:rgba(0,212,255,0.5);
  color:#fff;
  background:rgba(0,212,255,0.10);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(0,212,255,0.18);
}

/* ===== Hero 装饰光球 ===== */
.glow-orb{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;z-index:1;will-change:transform;}
.glow-orb-1{width:420px;height:420px;background:radial-gradient(circle,rgba(255,107,53,0.55) 0%,transparent 70%);top:-120px;left:-120px;animation:orbFloat 12s ease-in-out infinite;}
.glow-orb-2{width:520px;height:520px;background:radial-gradient(circle,rgba(0,212,255,0.35) 0%,transparent 70%);bottom:-180px;right:-160px;animation:orbFloat 14s ease-in-out infinite reverse;}
.glow-orb-3{width:280px;height:280px;background:radial-gradient(circle,rgba(255,107,53,0.3) 0%,transparent 70%);top:35%;right:18%;animation:orbFloat 16s ease-in-out infinite;}

/* ===== Hero 滚动指示器 ===== */
.scroll-indicator{
  position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:0.55rem;
  color:rgba(255,255,255,0.55);font-size:0.76rem;z-index:3;
  text-decoration:none;letter-spacing:0.05em;
}
.scroll-mouse{
  width:24px;height:38px;border:2px solid rgba(255,255,255,0.45);
  border-radius:12px;display:flex;justify-content:center;padding-top:6px;
}
.scroll-dot{width:4px;height:8px;background:var(--neon-orange);border-radius:2px;animation:scrollDot 1.8s ease-in-out infinite;}
.scroll-text{animation:scrollBounce 2s ease-in-out infinite;}

/* ===== Hero → 内容区 过渡渐变带 ===== */
.hero-bottom-gradient{
  height:140px;position:relative;
  background:linear-gradient(180deg,var(--hero-bg) 0%,#121726 25%,#E8EAEF 70%,var(--bg-soft) 100%);
  margin-top:-1px;
}

/* ===== 统计带（亮色） ===== */
.stats-band{
  background:linear-gradient(180deg,var(--bg-soft),#fff);
  padding:2.8rem 0;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  position:relative;overflow:hidden;
}
.stats-band::before{content:"";position:absolute;left:50%;top:50%;width:500px;height:200px;max-width:80vw;background:radial-gradient(ellipse,rgba(255,107,53,0.05),transparent 70%);transform:translate(-50%,-50%);pointer-events:none;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center;position:relative;}
.stat-item{padding:0.5rem;transition:transform .25s;}
.stat-item:hover{transform:translateY(-3px);}
.stat-num{
  font-size:2.2rem;font-weight:800;
  background:linear-gradient(135deg,var(--neon-orange),var(--neon-cyan));
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-label{color:var(--text-soft);font-size:0.9rem;margin-top:0.3rem;font-weight:500;}

/* ===== AI 雷达横滚 ===== */
.radar-track{display:flex;gap:1rem;overflow-x:auto;padding:0.4rem 0 0.8rem;scroll-snap-type:x mandatory;}
.radar-track::-webkit-scrollbar{height:6px;}
.radar-track::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
.radar-card{
  flex:0 0 280px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:1.3rem;scroll-snap-align:start;
  box-shadow:var(--shadow-card);transition:box-shadow .25s,transform .25s,border-color .25s;
  position:relative;overflow:hidden;
}
.radar-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));transform:scaleY(0);transform-origin:top;transition:transform .3s;}
.radar-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);border-color:rgba(255,107,53,0.3);}
.radar-card:hover::before{transform:scaleY(1);}
.radar-card .tag{display:inline-block;font-size:0.72rem;padding:0.2rem 0.6rem;border-radius:999px;margin-bottom:0.55rem;font-weight:600;}
.tag-new{background:rgba(255,107,53,0.1);color:var(--neon-orange);}
.tag-tool{background:rgba(0,212,255,0.1);color:#0891B2;}
.tag-play{background:rgba(168,85,247,0.1);color:#7C3AED;}
.radar-card h4{font-size:1.05rem;margin-bottom:0.4rem;transition:color .2s;}
.radar-card:hover h4{color:var(--neon-orange);}
.radar-card p{font-size:0.85rem;color:var(--text-soft);}

/* ===== 卡片栅格 ===== */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;}
.feature-card,.entrance-card,.opc-card,.resource-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:1.6rem;box-shadow:var(--shadow-card);
  transition:box-shadow .25s,transform .25s,border-color .25s;
  position:relative;overflow:hidden;
}
.feature-card::before,.entrance-card::before,.opc-card::before,.resource-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));transform:scaleY(0);transform-origin:top;transition:transform .3s;}
.feature-card:hover,.entrance-card:hover,.opc-card:hover,.resource-card:hover{
  box-shadow:var(--shadow-card-hover);transform:translateY(-4px);
  border-color:rgba(255,107,53,0.3);
}
.feature-card:hover::before,.entrance-card:hover::before,.opc-card:hover::before,.resource-card:hover::before{transform:scaleY(1);}
.feature-icon{width:44px;height:44px;background:linear-gradient(135deg,rgba(255,107,53,0.1),rgba(0,212,255,0.06));color:var(--neon-orange);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.1rem;margin-bottom:0.9rem;transition:transform .25s;}
.feature-card:hover .feature-icon{transform:scale(1.1);}
.entrance-card{display:flex;flex-direction:column;}
.entrance-icon{
  width:50px;height:50px;
  background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));
  color:#fff;border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:0.9rem;
  box-shadow:0 6px 16px rgba(255,107,53,0.3);transition:transform .25s;
}
.entrance-card:hover .entrance-icon{transform:scale(1.08) rotate(-3deg);}
.entrance-card h3{font-size:1.15rem;margin-bottom:0.3rem;transition:color .2s;}
.entrance-card:hover h3{color:var(--neon-orange);}
.entrance-card p{color:var(--text-soft);font-size:0.9rem;flex:1;}
.entrance-link{color:var(--neon-orange);font-size:0.88rem;font-weight:600;margin-top:0.9rem;transition:gap .2s;}
.entrance-card:hover .entrance-link{gap:0.5rem;}
.resource-card{display:flex;flex-direction:column;align-items:flex-start;text-decoration:none;}
.resource-card:hover h4{color:var(--neon-orange);}

/* ===== 工具卡片 ===== */
.tool-cat{
  display:inline-block;background:#fff;border:1px solid var(--border);
  padding:0.5rem 1.1rem;border-radius:999px;font-size:0.88rem;margin:0.3rem;
  cursor:pointer;transition:all .2s;
}
.tool-cat:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:0 6px 14px rgba(255,107,53,0.12);}
.tool-grid-hot{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;}
.tool-item-card{display:flex;gap:0.8rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1rem;transition:all .25s;box-shadow:var(--shadow-card);}
.tool-item-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);border-color:var(--primary);}
.tool-item-icon{width:44px;height:44px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}
.tool-item-icon.blue{background:#EEF2FF;color:#4F46E5;}
.tool-item-icon.cyan{background:#ECFEFF;color:#0891B2;}
.tool-item-icon.purple{background:#F3E8FF;color:#7C3AED;}
.tool-item-icon.green{background:#ECFDF5;color:#059669;}
.tool-item-icon.orange{background:var(--primary-soft);color:var(--primary);}
.tool-item-info h4{font-size:0.95rem;margin-bottom:0.2rem;display:flex;align-items:center;gap:0.4rem;}
.tool-item-info p{font-size:0.82rem;color:var(--text-soft);line-height:1.45;}
.tool-item-hot-badge{background:var(--primary);color:#fff;font-size:0.65rem;padding:0.1rem 0.35rem;border-radius:4px;font-weight:700;}
.tool-item-new-badge{background:#10B981;color:#fff;font-size:0.65rem;padding:0.1rem 0.35rem;border-radius:4px;font-weight:700;}

/* ===== Tab 切换 ===== */
.tab-switch{display:flex;gap:0.5rem;justify-content:center;margin-bottom:1.8rem;}
.tab-switch-btn{background:none;border:1px solid var(--border);padding:0.5rem 1.2rem;border-radius:999px;font-size:0.9rem;cursor:pointer;color:var(--text-soft);transition:all .2s;}
.tab-switch-btn.active{background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(255,107,53,0.3);}
.tool-tab-content{display:none;}
.tool-tab-content.active{display:block;}

/* ===== 场景实操卡片 ===== */
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;}
.scenario-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:1.5rem;box-shadow:var(--shadow-card);
  transition:box-shadow .25s,transform .25s,border-color .25s;
  display:flex;flex-direction:column;position:relative;overflow:hidden;
}
.scenario-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));
  transform:scaleY(0);transform-origin:top;transition:transform .3s;
}
.scenario-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,107,53,0.08),transparent 70%);
  opacity:0;transition:opacity .3s;pointer-events:none;
}
.scenario-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-4px);border-color:rgba(255,107,53,0.25);}
.scenario-card:hover::before{transform:scaleY(1);}
.scenario-card:hover::after{opacity:1;}
.scenario-cat{display:inline-block;font-size:0.72rem;color:var(--neon-orange);font-weight:600;margin-bottom:0.5rem;letter-spacing:0.03em;padding:0.2rem 0.6rem;border-radius:6px;background:rgba(255,107,53,0.08);width:fit-content;}
.scenario-card h3{font-size:1.1rem;margin-bottom:0.5rem;line-height:1.4;transition:color .2s;}
.scenario-card:hover h3{color:var(--neon-orange);}
.scenario-card p{color:var(--text-soft);font-size:0.88rem;flex:1;}
.scenario-meta{display:flex;gap:0.8rem;margin-top:0.9rem;padding-top:0.9rem;border-top:1px dashed var(--border);font-size:0.78rem;color:var(--text-soft);}
.scenario-meta span{display:inline-flex;align-items:center;gap:0.25rem;}
.scenario-meta i{color:var(--neon-orange);}

/* 分类筛选条 */
.filter-bar{display:flex;gap:0.5rem;flex-wrap:wrap;justify-content:center;margin-bottom:2.5rem;padding:0.6rem;background:rgba(255,255,255,0.6);border:1px solid var(--border);border-radius:14px;box-shadow:0 2px 12px rgba(15,23,42,0.04);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);}
.filter-chip{background:transparent;border:1px solid transparent;padding:0.5rem 1.15rem;border-radius:999px;font-size:0.88rem;cursor:pointer;transition:all .22s;color:var(--text-soft);font-weight:500;}
.filter-chip:hover{background:rgba(255,107,53,0.06);color:var(--neon-orange);}
.filter-chip.active{background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(255,107,53,0.32);}

/* 场景分类组标题 */
.scenario-category h3{transition:transform .25s;}
.scenario-category:hover h3{transform:translateX(2px);}

/* ===== 场景详情页 ===== */
.scenario-detail{max-width:760px;margin:0 auto;}
.scenario-detail h1{font-size:1.9rem;margin-bottom:0.5rem;font-weight:800;line-height:1.3;}
.scenario-breadcrumb{color:var(--text-soft);font-size:0.85rem;margin-bottom:1.5rem;padding:0.8rem 1.2rem;background:linear-gradient(135deg,rgba(10,14,26,0.92),#141B2D);border-radius:var(--radius);position:relative;overflow:hidden;}
.scenario-breadcrumb::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));}
.scenario-breadcrumb a{color:rgba(255,255,255,0.7);}
.scenario-breadcrumb a:hover{color:var(--neon-orange);}
.scenario-section{margin-bottom:2.2rem;scroll-margin-top:80px;}
.scenario-section h2{font-size:1.25rem;margin-bottom:0.9rem;padding:0.5rem 0.9rem;border-left:3px solid var(--neon-orange);background:linear-gradient(90deg,rgba(255,107,53,0.06),transparent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-weight:700;}
.scenario-section p,.scenario-section li{color:var(--text);line-height:1.75;}
.scenario-section ul,.scenario-section ol{padding-left:1.5rem;}
.scenario-section li{margin-bottom:0.4rem;}
.scenario-section strong{color:var(--neon-orange);}
.tool-ref{display:inline-flex;align-items:center;gap:0.3rem;background:linear-gradient(135deg,rgba(255,107,53,0.06),rgba(0,212,255,0.03));border:1px solid rgba(255,107,53,0.2);padding:0.35rem 0.8rem;border-radius:999px;font-size:0.85rem;margin:0.2rem 0.2rem 0.2rem 0;transition:all .2s;font-weight:500;}
.tool-ref:hover{border-color:var(--neon-orange);color:var(--neon-orange);transform:translateY(-1px);box-shadow:0 3px 10px rgba(255,107,53,0.15);}
.prompt-block{background:linear-gradient(135deg,#0F172A,#1E293B);border:1px solid rgba(255,107,53,0.2);border-radius:var(--radius);padding:1.2rem;position:relative;overflow:hidden;}
.prompt-block::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--neon-orange),var(--neon-cyan));}
.prompt-block pre{white-space:pre-wrap;font-family:'SF Mono',Consolas,Monaco,monospace;font-size:0.86rem;color:#E2E8F0;line-height:1.7;}
.copy-btn{position:absolute;top:0.8rem;right:0.8rem;background:rgba(255,107,53,0.15);border:1px solid rgba(255,107,53,0.3);padding:0.3rem 0.8rem;border-radius:999px;font-size:0.78rem;cursor:pointer;color:#FFB088;transition:all .2s;font-weight:500;}
.copy-btn:hover{background:var(--neon-orange);color:#fff;border-color:var(--neon-orange);}
.copy-btn.copied{background:var(--neon-cyan);color:#fff;border-color:var(--neon-cyan);}
.pitfall{background:linear-gradient(135deg,#FFFBEB,#FEF3C7);border:1px solid #FDE68A;border-left:3px solid #F59E0B;border-radius:var(--radius);padding:1.2rem;position:relative;}
.pitfall::before{content:"⚠️ 避坑提示";display:block;font-size:0.82rem;font-weight:700;color:#92400E;margin-bottom:0.6rem;}
.pitfall ul{list-style:none;padding-left:0;}
.pitfall li{color:#78350F;margin-bottom:0.5rem;padding-left:1.2rem;position:relative;line-height:1.6;}
.pitfall li::before{content:"•";position:absolute;left:0;color:#F59E0B;font-weight:700;}
.related-scenarios{border-top:1px solid var(--border);padding-top:1.8rem;margin-top:2.5rem;}
.related-scenarios h3{font-size:1.1rem;margin-bottom:1rem;font-weight:700;}
.related-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0.9rem;}
.related-list a{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1rem;font-size:0.9rem;transition:all .22s;position:relative;overflow:hidden;font-weight:500;}
.related-list a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));transform:scaleY(0);transform-origin:top;transition:transform .3s;}
.related-list a:hover{border-color:rgba(255,107,53,0.25);box-shadow:var(--shadow-card-hover);transform:translateY(-2px);color:var(--neon-orange);}
.related-list a:hover::before{transform:scaleY(1);}

/* 回到顶部按钮 */
.back-to-top{position:fixed;right:1.5rem;bottom:1.5rem;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:0 6px 20px rgba(255,107,53,0.35);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;z-index:50;}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(255,107,53,0.45);}

/* ===== 页脚（深色质感） ===== */
.footer{background:linear-gradient(180deg,#0A0E1A 0%,#0F172A 100%);border-top:1px solid rgba(255,107,53,0.15);padding:3rem 0 1.5rem;margin-top:2rem;color:rgba(255,255,255,0.6);position:relative;overflow:hidden;}
.footer::before{content:"";position:absolute;left:50%;top:-60px;width:600px;height:180px;max-width:90vw;background:radial-gradient(ellipse,rgba(255,107,53,0.08),transparent 70%);transform:translateX(-50%);pointer-events:none;}
.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:1.5rem;position:relative;}
.footer-col h4{font-size:0.95rem;margin-bottom:0.8rem;color:#fff;font-weight:600;}
.footer-col p{color:rgba(255,255,255,0.5);font-size:0.85rem;line-height:1.6;}
.footer-col a{display:block;color:rgba(255,255,255,0.55);font-size:0.88rem;margin-bottom:0.4rem;transition:color .2s,padding-left .2s;}
.footer-col a:hover{color:var(--neon-orange);padding-left:0.3rem;}
.footer-bottom{text-align:center;color:rgba(255,255,255,0.4);font-size:0.82rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,0.08);position:relative;}

/* ===== 工具/提示词页通用 ===== */
.page-header{background:linear-gradient(180deg,#0A0E1A 0%,#141B2D 70%,var(--bg) 100%);padding:3.5rem 0 3rem;text-align:center;position:relative;overflow:hidden;}
.page-header::before{content:"";position:absolute;left:50%;top:-80px;width:700px;height:340px;max-width:95vw;background:radial-gradient(ellipse,rgba(255,107,53,0.18),transparent 65%);transform:translateX(-50%);pointer-events:none;}
.page-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(180deg,transparent,var(--bg));pointer-events:none;}
.page-header h1{font-size:2.1rem;margin-bottom:0.5rem;font-weight:800;position:relative;background:linear-gradient(135deg,#fff 0%,#FFB088 50%,var(--neon-cyan) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
.page-header p{color:rgba(255,255,255,0.72);position:relative;font-size:0.95rem;}
.page-header .breadcrumbs,.page-header .breadcrumbs a{color:rgba(255,255,255,0.55);position:relative;}
.page-header .breadcrumbs a:hover{color:var(--neon-orange);}

/* 提示词卡片 */
.prompt-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem;box-shadow:var(--shadow-card);transition:box-shadow .25s,transform .25s,border-color .25s;position:relative;overflow:hidden;}
.prompt-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon-orange),var(--neon-cyan));transform:scaleY(0);transform-origin:top;transition:transform .3s;}
.prompt-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);border-color:rgba(255,107,53,0.25);}
.prompt-card:hover::before{transform:scaleY(1);}
.prompt-card h4{font-size:1.02rem;margin-bottom:0.4rem;transition:color .2s;}
.prompt-card:hover h4{color:var(--neon-orange);}
.prompt-card h3{font-size:1.05rem;margin-bottom:0.4rem;transition:color .2s;}
.prompt-card:hover h3{color:var(--neon-orange);}
.prompt-scene{font-size:0.76rem;color:var(--neon-orange);font-weight:600;margin-bottom:0.7rem;display:inline-block;padding:0.2rem 0.6rem;border-radius:6px;background:rgba(255,107,53,0.08);width:fit-content;}
.prompt-scene a{color:inherit;}
.prompt-card pre{background:var(--bg-soft);padding:0.9rem;border-radius:var(--radius-sm);font-size:0.85rem;white-space:pre-wrap;font-family:inherit;color:var(--text);margin-bottom:0.6rem;border:1px solid var(--border);}

/* 提示词库页头部（复用深色风） */
.page-hero{background:linear-gradient(180deg,#0A0E1A 0%,#141B2D 70%,var(--bg) 100%);padding:3.5rem 0 3rem;text-align:center;position:relative;overflow:hidden;}
.page-hero::before{content:"";position:absolute;left:50%;top:-80px;width:700px;height:340px;max-width:95vw;background:radial-gradient(ellipse,rgba(255,107,53,0.18),transparent 65%);transform:translateX(-50%);pointer-events:none;}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(180deg,transparent,var(--bg));pointer-events:none;}
.page-hero .breadcrumbs,.page-hero .breadcrumbs a{color:rgba(255,255,255,0.55);position:relative;font-size:0.85rem;}
.page-hero .breadcrumbs a:hover{color:var(--neon-orange);}
.page-hero h1{font-size:2.1rem;font-weight:800;margin-bottom:0.5rem;position:relative;background:linear-gradient(135deg,#fff 0%,#FFB088 50%,var(--neon-cyan) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;}
.page-hero h1 .accent{-webkit-text-fill-color:transparent;}
.page-hero p{color:rgba(255,255,255,0.72);font-size:0.95rem;position:relative;}

/* 分类标签条（提示词库/工具集通用） */
.cat-tabs{display:flex;flex-wrap:wrap;gap:0.5rem;justify-content:center;margin-bottom:2.5rem;padding:0.6rem;background:rgba(255,255,255,0.6);border:1px solid var(--border);border-radius:14px;box-shadow:0 2px 12px rgba(15,23,42,0.04);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);position:sticky;top:64px;z-index:20;}
.cat-tab{background:transparent;border:1px solid transparent;padding:0.5rem 1.1rem;border-radius:999px;font-size:0.88rem;color:var(--text-soft);text-decoration:none;transition:all .22s;font-weight:500;cursor:pointer;}
.cat-tab:hover{background:rgba(255,107,53,0.06);color:var(--neon-orange);}
.cat-tab.active{background:linear-gradient(135deg,var(--neon-orange),var(--neon-orange-2));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(255,107,53,0.32);}

/* 提示词网格 */
.prompts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-bottom:2.5rem;}
@media (max-width:900px){.prompts-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.prompts-grid{grid-template-columns:1fr;}}

/* ===== 极简交流群页（深色质感） ===== */
.minimal-join{max-width:440px;margin:4rem auto;text-align:center;padding:2.5rem;background:linear-gradient(180deg,#0F172A 0%,#1E293B 100%);border:1px solid rgba(255,107,53,0.2);border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,0.25);position:relative;overflow:hidden;}
.minimal-join::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--neon-orange),var(--neon-cyan));}
.minimal-join::after{content:"";position:absolute;left:50%;top:-40px;width:300px;height:120px;background:radial-gradient(ellipse,rgba(255,107,53,0.15),transparent 70%);transform:translateX(-50%);pointer-events:none;}
.minimal-join h1{font-size:1.5rem;margin-bottom:0.6rem;color:#fff;font-weight:700;position:relative;}
.minimal-join p{color:rgba(255,255,255,0.65);font-size:0.92rem;margin-bottom:1.8rem;position:relative;}
.qr-placeholder{width:200px;height:200px;background:rgba(255,255,255,0.05);border:1px dashed rgba(255,107,53,0.3);border-radius:var(--radius);margin:0 auto 1rem;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.4);font-size:0.85rem;position:relative;}

/* ===== 动效工具类 ===== */
/* 滚动渐显（仅当 JS 启用时隐藏，避免无 JS 时内容不可见） */
.js-on .fade-up{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.js-on .fade-up.in-view{opacity:1;transform:translateY(0);}

/* 渐变文字 */
.gradient-text{
  background:linear-gradient(135deg,var(--neon-orange) 0%,var(--neon-orange-2) 35%,var(--neon-cyan) 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
/* 发光文字 */
.glow-text{
  color:var(--neon-orange);
  text-shadow:0 0 18px rgba(255,107,53,0.55),0 0 36px rgba(255,107,53,0.28);
}
/* 3D 倾斜卡片（JS 驱动 rotateX/rotateY） */
.tilt-card{transform-style:preserve-3d;transition:transform .15s ease,box-shadow .25s ease;}
.tilt-card:hover{box-shadow:var(--shadow-card-hover);}
/* hover 发光 */
.card-glow{position:relative;}
.card-glow::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:0 0 0 0 rgba(255,107,53,0);transition:box-shadow .3s ease;
}
.card-glow:hover::after{box-shadow:0 0 30px rgba(255,107,53,0.25);}

/* ===== 关键帧 ===== */
@keyframes scrollDot{0%{transform:translateY(0);opacity:1}50%{transform:translateY(12px);opacity:0.4}100%{transform:translateY(0);opacity:1}}
@keyframes scrollBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
@keyframes orbFloat{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-20px)}}

/* ===== 响应式 ===== */
@media (max-width:900px){
  /* 移动端：两列布局（左 Logo | 右 动作区），导航链接隐藏为下拉 */
  .nav-container{
    grid-template-columns:auto auto;
    gap:1rem;
    padding:0.9rem 1.2rem;
  }
  .nav-links{
    display:none !important;
    position:absolute;top:100%;left:0;right:0;
    background:#fff;flex-direction:column;
    padding:1rem 1.2rem;
    border-bottom:1px solid rgba(15,23,42,0.06);
    gap:0.6rem;
    box-shadow:0 8px 20px rgba(0,0,0,0.04);
  }
  .nav-links.open{display:flex !important;}
  /* 移动端胶囊：全宽左对齐、10px 方圆角，保持 SaaS 简洁 */
  .nav-links a{
    width:100%;
    border-radius:10px;
    padding:0.7rem 1rem !important;
    color:var(--text-soft) !important;
    background:transparent !important;
    border-color:transparent !important;
    box-shadow:none !important;
    font-size:0.95rem;
  }
  .nav-links a:hover,.nav-links a.active,.nav-links a.active-nav{
    color:var(--primary-dark) !important;
    background:var(--primary-soft) !important;
    border-color:rgba(255,107,53,0.18) !important;
    box-shadow:none !important;
  }
  /* 移动端汉堡显示 */
  .menu-btn{display:inline-flex;}
  /* CTA 在移动端保留，缩小点 */
  .nav-cta{padding:0.5rem 1.05rem;font-size:0.82rem;}
  .cards-4,.cards-3,.scenario-grid,.tool-grid-hot{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .footer-content{grid-template-columns:1fr 1fr;}
  .related-list{grid-template-columns:1fr;}
  .hero{padding:5.5rem 0 4rem;min-height:auto;}
  .hero h1{font-size:2.2rem;}
  .hero-bottom-gradient{height:90px;}
}
@media (max-width:560px){
  /* 极窄屏幕：Logo 缩小，CTA 隐藏（留汉堡菜单即可） */
  .logo-text{font-size:1.02rem;}
  .logo-icon{width:28px;height:28px;font-size:0.88rem;}
  .nav-cta{display:none;}
  .nav-container{padding:0.85rem 1rem;gap:0.8rem;}
  .cards-4,.cards-3,.scenario-grid,.tool-grid-hot,.stats-grid{grid-template-columns:1fr;}
  .footer-content{grid-template-columns:1fr;}
  .section{padding:2.8rem 0;}
  .hero{padding:4.5rem 0 3rem;min-height:auto;}
  .hero h1{font-size:1.9rem;}
  .hero-sub{font-size:0.95rem;}
  .search-box{flex-direction:column;}
  .search-box button{padding:0.7rem;}
  .scroll-indicator{display:none;}
  .hero-bottom-gradient{height:60px;}
  .section-header h2{font-size:1.5rem;}
}