/* ============================================
   顾企AI咨询 — 全局设计系统 v6 (mobile-optimized)
   品牌色：#1677ff (科技蓝) / #ff7d29 (暖橙)
   图标序列: sm(28) md(48) lg(72) xl(96) 2xl(128)
   基底字号: 17px (1.0625rem)
   ============================================ */

/* --- CSS 变量 --- */
:root {
  --primary: #1677ff;
  --primary-light: #e6f0ff;
  --primary-dark: #0d4c9e;
  --primary-deep: #0a2a5e;
  --accent: #ff7d29;
  --accent-light: #fff3e6;
  --accent-dark: #d4601a;

  --white: #ffffff;
  --gray-50: #f7f8fa;
  --gray-75: #f0f1f4;
  --gray-100: #e8eaef;
  --gray-200: #d4d7de;
  --gray-400: #999ea8;
  --gray-600: #5a6070;
  --gray-800: #2d3139;
  --gray-900: #1a1d23;

  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--space-20:80px;--space-24:96px;
  --text-xs:.75rem;--text-sm:.875rem;--text-base:1.0625rem;--text-lg:1.1875rem;--text-xl:1.3125rem;--text-2xl:1.625rem;--text-3xl:2rem;--text-4xl:2.5rem;--text-5xl:3.125rem;
  --shadow-xs:0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:0 1px 3px rgba(45,49,57,0.05), 0 1px 2px rgba(45,49,57,0.03);
  --shadow-md:0 4px 12px rgba(45,49,57,0.06), 0 2px 4px rgba(45,49,57,0.03);
  --shadow-lg:0 8px 24px rgba(22,119,255,0.07), 0 2px 6px rgba(45,49,57,0.04);
  --shadow-xl:0 14px 40px rgba(45,49,57,0.09), 0 4px 10px rgba(45,49,57,0.04);
  --shadow-glow-blue:0 6px 24px rgba(22,119,255,0.12);
  --shadow-glow-orange:0 6px 24px rgba(255,125,41,0.15);
  --ease-out:cubic-bezier(0.22,1,0.36,1);
  --ease-spring:cubic-bezier(0.34,1.56,0.64,1);
  --ease-in-out:cubic-bezier(0.4,0,0.2,1);
  --duration-fast:180ms;
  --duration-normal:300ms;
  --duration-slow:500ms;
  --nav-height:60px;
  --max-width:1200px;
  --radius-sm:6px;
  --radius:8px;
  --radius-lg:12px;
  --radius-xl:16px;
}

/* --- 重置 --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:var(--text-base);color:var(--gray-800);background:var(--white);line-height:1.75;overflow-x:hidden;overflow-wrap:break-word;word-break:break-word;-webkit-text-size-adjust:100%}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
button{cursor:pointer;border:none;font-family:inherit;background:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-6)}
@media(max-width:576px){.container{padding:0 var(--space-4)}}

/* --- 页面主体 --- */
.page-body{padding-top:var(--nav-height)}

/* --- 按钮 --- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:48px;font-size:var(--text-base);font-weight:600;transition:all var(--duration-fast) var(--ease-out);text-align:center;white-space:nowrap;line-height:1.2;letter-spacing:0.01em}
.btn-primary{background:var(--accent);color:var(--white);box-shadow:0 2px 8px rgba(255,125,41,0.25)}
.btn-primary:hover{background:var(--accent-dark);box-shadow:0 6px 18px rgba(255,125,41,0.38);transform:translateY(-1px)}
.btn-primary:active{transform:scale(0.97);box-shadow:0 1px 4px rgba(255,125,41,0.2)}
.btn-secondary{background:var(--primary);color:var(--white);box-shadow:0 2px 8px rgba(22,119,255,0.2)}
.btn-secondary:hover{background:var(--primary-dark);box-shadow:0 6px 18px rgba(22,119,255,0.32);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--white);border:1.5px solid rgba(255,255,255,0.45)}
.btn-outline:hover{border-color:var(--white);background:rgba(255,255,255,0.08)}
.btn-lg{padding:var(--space-4) var(--space-10);font-size:var(--text-lg);font-weight:700}

/* --- 区块 --- */
.section{padding:var(--space-24) 0}
.section-alt{background:var(--gray-50)}
.section-accent-warm{background:var(--accent-light)}
.section-accent-cool{background:var(--primary-light)}
.section-dark{background:var(--primary-deep);color:var(--white)}
@media(max-width:768px){.section{padding:var(--space-16) 0}}

/* --- 区块标题 --- */
.section-header{margin-bottom:var(--space-10)}
.section-header.centered{text-align:center}
.section-header h2{font-size:var(--text-3xl);font-weight:800;color:var(--gray-900);line-height:1.25;letter-spacing:-0.02em}
.section-header h2 .highlight{color:var(--accent)}
.section-header p{font-size:var(--text-lg);color:var(--gray-600);max-width:65ch;margin-top:var(--space-3)}
.section-header.centered p{margin-left:auto;margin-right:auto}
@media(max-width:576px){.section-header h2{font-size:var(--text-2xl)}.section-header p{font-size:var(--text-base)}}

/* --- 网格 --- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-8)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-6)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-5)}
@media(max-width:992px){.grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:576px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ===== 导航 ===== */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:rgba(255,255,255,0.97);z-index:1000;border-bottom:1px solid transparent;transition:border-color 0.3s ease, box-shadow 0.3s ease}
.navbar.scrolled{border-bottom-color:var(--gray-100);box-shadow:0 1px 8px rgba(0,0,0,0.06)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:100%}

.nav-logo{display:flex;align-items:center;gap:var(--space-2);font-size:1.125rem;font-weight:700;color:var(--gray-900);letter-spacing:-0.01em;white-space:nowrap}
.nav-logo img{width:30px;height:30px}

.nav-links{display:flex;align-items:center;gap:var(--space-3)}

/* 顶级导航链接 */
.nav-links>a{font-size:1rem;font-weight:500;color:var(--gray-600);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);transition:color var(--duration-fast),background var(--duration-fast);position:relative}
.nav-links>a:hover{color:var(--primary);background:var(--primary-light)}
.nav-links>a.active{color:var(--primary);font-weight:600}

/* 下拉 */
.nav-dropdown{position:relative}
.nav-dropdown>a{cursor:default;font-size:1rem;font-weight:500;color:var(--gray-600);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);transition:color var(--duration-fast),background var(--duration-fast);position:relative;display:inline-flex;align-items:center}
.nav-dropdown>a::after{content:'';display:inline-block;width:0;height:0;margin-left:5px;border-left:3.5px solid transparent;border-right:3.5px solid transparent;border-top:4px solid var(--gray-400);transition:border-color var(--duration-fast),transform var(--duration-fast)}
.nav-dropdown:hover>a{color:var(--primary);background:var(--primary-light);border-radius:var(--radius-sm)}
.nav-dropdown:hover>a::after{border-top-color:var(--primary);transform:rotate(180deg)}

.nav-dropdown-menu{position:absolute;top:calc(100% + 4px);left:50%;transform:translateX(-50%) translateY(4px);background:var(--white);border-radius:var(--radius-lg);padding:var(--space-2);min-width:200px;opacity:0;visibility:hidden;transition:all var(--duration-fast) var(--ease-out);box-shadow:0 12px 32px rgba(0,0,0,0.08),0 0 0 1px var(--gray-100)}
.nav-dropdown:hover .nav-dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}

.nav-dropdown-menu a{display:block;padding:var(--space-2) var(--space-3);font-size:0.875rem;color:var(--gray-600);border-radius:var(--radius-sm);transition:all var(--duration-fast);white-space:nowrap}
.nav-dropdown-menu a:hover{background:var(--primary-light);color:var(--primary)}
.nav-dropdown-menu a strong{display:block;color:var(--gray-800);font-size:0.875rem;margin-bottom:1px}
.nav-dropdown-menu a em{display:block;font-style:normal;font-size:var(--text-xs);color:var(--gray-400);margin-top:1px}

/* 多列下拉 */
.nav-dropdown-lg .nav-dropdown-menu{min-width:480px;padding:var(--space-3)}
.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns{column-count:3;column-gap:0}
.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a{break-inside:avoid;padding:var(--space-3);border-radius:0;border-right:1px solid var(--gray-100);display:flex;flex-direction:column}
.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a:last-child,.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a:nth-child(3n){border-right:none}
.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a strong{font-size:var(--text-sm);margin-bottom:2px}
.nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a em{font-size:0.75rem}
@media(max-width:992px){
  .nav-dropdown-lg .nav-dropdown-menu{min-width:auto;padding:0 0 0 var(--space-4)}
  .nav-dropdown-lg .nav-dropdown-menu.dropdown-columns{column-count:1}
  .nav-dropdown-lg .nav-dropdown-menu.dropdown-columns a{border-right:none;padding:var(--space-2) var(--space-3)}
}

/* CTA */
.nav-btn{padding:var(--space-1) var(--space-6);background:var(--accent);color:var(--white);border-radius:48px;font-size:0.875rem;font-weight:600;transition:all var(--duration-fast);box-shadow:0 2px 6px rgba(255,125,41,0.2);margin-left:var(--space-3)}
.nav-btn:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(255,125,41,0.3)}
.nav-btn.active{background:var(--primary);box-shadow:0 2px 6px rgba(22,119,255,0.2)}

/* 汉堡 */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:var(--space-2);z-index:1001;border-radius:var(--radius-sm)}
.hamburger:hover{background:var(--gray-50)}
.hamburger span{display:block;width:20px;height:2px;background:var(--gray-800);border-radius:1px;transition:all var(--duration-fast)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* 移动端 */
@media(max-width:992px){
  .nav-links{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--white);flex-direction:column;align-items:stretch;padding:calc(var(--nav-height) + var(--space-6)) var(--space-6) var(--space-6);gap:0;box-shadow:var(--shadow-xl);transition:right var(--duration-normal) var(--ease-out);z-index:999;overflow-y:auto}
  .nav-links.open{right:0}
  .nav-links>a{font-size:1rem;padding:var(--space-3) var(--space-2);border-radius:0;border-bottom:1px solid var(--gray-100)}
  .nav-dropdown-menu{position:static;transform:none;box-shadow:none;border:none;padding:0 0 0 var(--space-4);margin:0;opacity:1;visibility:visible;display:none;min-width:auto}
  .nav-dropdown.open .nav-dropdown-menu{display:block}
  .nav-dropdown-menu a{padding:var(--space-2) var(--space-3);font-size:0.875rem}
  .nav-dropdown>a::after{display:none}
  .nav-dropdown>a{font-size:1rem;padding:var(--space-3) var(--space-2);border-radius:0;border-bottom:1px solid var(--gray-100)}
  .hamburger{display:flex;min-height:44px;min-width:44px;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2)}
  .nav-btn{margin:var(--space-3) 0 0 var(--space-2);text-align:center;padding:var(--space-2) var(--space-6)}
}

/* --- 页脚 --- */
.footer{background:var(--gray-900);color:var(--white);padding:var(--space-16) 0 var(--space-8)}.footer-content{display:flex;flex-direction:column;align-items:center;gap:var(--space-4);text-align:center}.footer-phone{font-size:var(--text-2xl);font-weight:700;letter-spacing:2px}.footer-info{font-size:var(--text-sm);opacity:0.55;line-height:1.8}.footer-copyright{font-size:var(--text-xs);opacity:0.3;margin-top:var(--space-8);padding-top:var(--space-5);border-top:1px solid rgba(255,255,255,0.06);width:100%}

/* ========== 浮动在线客服 ========== */
.float-widget{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;align-items:flex-end}
.float-toggle{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white);box-shadow:0 4px 16px rgba(22,119,255,0.35);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.3s ease;border:none;z-index:2;position:relative}
.float-toggle:hover{transform:scale(1.08);box-shadow:0 6px 24px rgba(22,119,255,0.45)}
.float-toggle:active{transform:scale(0.95)}
.float-panel{position:absolute;bottom:68px;right:0;width:320px;background:var(--white);border-radius:16px;box-shadow:0 16px 48px rgba(0,0,0,0.12),0 0 0 1px rgba(0,0,0,0.04);opacity:0;visibility:hidden;transform:translateY(12px) scale(0.96);transition:all 0.25s cubic-bezier(0.22,1,0.36,1);transform-origin:bottom right;overflow:hidden}
.float-widget.open .float-panel{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.float-panel-header{padding:16px 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--white)}
.float-panel-header strong{display:block;font-size:1rem;font-weight:700}
.float-panel-header span{font-size:0.8rem;opacity:0.8}
.float-panel-body{padding:20px}
.float-greeting{font-size:0.9rem;color:var(--gray-800);margin-bottom:16px;line-height:1.6}
.float-actions{display:flex;flex-direction:column;gap:10px}
.float-btn{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;font-size:0.9rem;font-weight:600;transition:all 0.2s;text-decoration:none}
.float-btn-primary{background:var(--primary-light);color:var(--primary)}
.float-btn-primary:hover{background:#d0e2ff;color:var(--primary-dark)}
.float-btn-secondary{background:var(--gray-50);color:var(--gray-800)}
.float-btn-secondary:hover{background:var(--gray-100);color:var(--gray-900)}
.float-divider{height:1px;background:var(--gray-100);margin:16px 0}
.float-phone{text-align:center;font-size:1.05rem;font-weight:700;color:var(--primary);letter-spacing:1px}
@media(max-width:576px){.float-panel{width:290px;right:0;bottom:64px}.float-toggle{width:50px;height:50px}}

/* --- 滚动入场动画 --- */
/* =============================================
   动效系统 — 入场动画 + 悬停动效 v2
   ============================================= */

/* 基础入场动画 - 提升流畅度 */
.fade-up{opacity:0;transform:translateY(24px);transition:all 0.7s cubic-bezier(0.22,1,0.36,1)}
.fade-up.in-view{opacity:1;transform:translateY(0)}

/* 缩放入场 */
.scale-in{opacity:0;transform:scale(0.92);transition:all 0.7s cubic-bezier(0.22,1,0.36,1)}
.scale-in.in-view{opacity:1;transform:scale(1)}

/* 从左侧滑入 */
.slide-left{opacity:0;transform:translateX(-30px);transition:all 0.7s cubic-bezier(0.22,1,0.36,1)}
.slide-left.in-view{opacity:1;transform:translateX(0)}

/* 从右侧滑入 */
.slide-right{opacity:0;transform:translateX(30px);transition:all 0.7s cubic-bezier(0.22,1,0.36,1)}
.slide-right.in-view{opacity:1;transform:translateX(0)}

/* 交错子元素入场 */
.stagger>*{opacity:0;transform:translateY(20px);transition:all 0.7s cubic-bezier(0.22,1,0.36,1)}
.stagger.in-view>*:nth-child(1){transition-delay:0s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(2){transition-delay:.08s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(3){transition-delay:.16s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(4){transition-delay:.24s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(5){transition-delay:.32s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(6){transition-delay:.40s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(7){transition-delay:.48s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(8){transition-delay:.56s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(9){transition-delay:.64s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(10){transition-delay:.72s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(11){transition-delay:.80s;opacity:1;transform:translateY(0)}
.stagger.in-view>*:nth-child(12){transition-delay:.88s;opacity:1;transform:translateY(0)}

/* 标题线渐变动画 */
.title-line{width:64px;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent),var(--primary));background-size:200% 100%;margin:var(--space-4) auto 0;border-radius:2px;animation:titleLineShimmer 3s ease-in-out infinite}
@keyframes titleLineShimmer{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

/* ========== 装饰卡片系统 ========== */
.deco-card{background:var(--white);border-radius:var(--radius-lg);padding:var(--space-8);box-shadow:0 1px 3px rgba(45,49,57,0.04);border:1px solid rgba(45,49,57,0.06);transition:all var(--duration-normal) var(--ease-out);position:relative;overflow:hidden;cursor:default}
/* 光泽扫光遮罩 - 悬停时划过 */
.deco-card::before{content:'';position:absolute;inset:0;background:linear-gradient(105deg,transparent 40%,rgba(255,255,255,0.5) 50%,transparent 60%);opacity:0;transition:all 0.6s var(--ease-out);pointer-events:none;z-index:1}
.deco-card:hover::before{opacity:1;transform:translateX(30%)}
/* 悬停 inner-border 辉光 */
.deco-card::after{content:'';position:absolute;inset:-1px;border-radius:var(--radius-lg);border:1.5px solid transparent;transition:all var(--duration-normal) var(--ease-out);pointer-events:none;z-index:0}
.deco-card:hover::after{border-color:rgba(22,119,255,0.2);box-shadow:inset 0 0 20px rgba(22,119,255,0.04)}
.deco-card:hover{box-shadow:0 12px 36px rgba(22,119,255,0.10), 0 4px 12px rgba(45,49,57,0.06);transform:translateY(-4px)}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:0.01ms!important;animation-duration:0.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}}

/* ========== SVG 图标系统 v3 ========== */
.icon{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle;flex-shrink:0}
.icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.icon-sm{width:28px;height:28px}
.icon-md{width:48px;height:48px}
.icon-lg{width:72px;height:72px}
.icon-xl{width:96px;height:96px}
.icon-2xl{width:128px;height:128px}
.icon-lg svg{stroke-width:2}
.icon-xl svg{stroke-width:1.8}
.icon-2xl svg{stroke-width:1.6}
.icon-primary{color:var(--primary)}
.icon-accent{color:var(--accent)}
.icon-white{color:var(--white)}
.icon-gray{color:var(--gray-400)}
.icon-green{color:#389e0d}
.icon-block{text-align:center;padding:var(--space-6);display:flex;flex-direction:column;align-items:center;gap:var(--space-4)}
.icon-block .icon-wrap{width:80px;height:80px;border-radius:20px;display:flex;align-items:center;justify-content:center;transition:all var(--duration-normal) var(--ease-out)}
.icon-block .icon-wrap svg{width:40px;height:40px;stroke-width:2}
.icon-block:hover .icon-wrap{transform:scale(1.06)}
.icon-block h4{font-size:var(--text-lg);font-weight:700;color:var(--gray-900)}
.icon-block p{font-size:var(--text-sm);color:var(--gray-600);line-height:1.6}
.icon-wrap-blue{background:linear-gradient(135deg,#e6f0ff,#c0d6ff);color:var(--primary)}
.icon-wrap-orange{background:linear-gradient(135deg,#fff7e6,#ffe0b2);color:var(--accent)}
.icon-wrap-gray{background:var(--gray-50);color:var(--gray-600)}

/* ========== 页面横幅 ========== */
.page-banner{background:linear-gradient(135deg,#1677ff 0%,#0d4c9e 60%,#0a2a5e 100%);padding:var(--space-24) 0;text-align:center;color:var(--white);position:relative;overflow:hidden}
.page-banner::before{content:'';position:absolute;top:-30%;right:-10%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,0.07) 0%,transparent 70%)}
.page-banner::after{content:'';position:absolute;bottom:-40%;left:-5%;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(255,125,41,0.06) 0%,transparent 70%)}
.page-banner h1{font-size:var(--text-4xl);font-weight:800;margin-bottom:var(--space-4);position:relative;z-index:1}
.page-banner p{font-size:var(--text-lg);opacity:.85;max-width:640px;margin:0 auto;position:relative;z-index:1}
.page-banner .banner-deco{margin-top:var(--space-6)}
@media(max-width:576px){.page-banner{padding:var(--space-16) 0}.page-banner h1{font-size:var(--text-2xl)}}

/* ========== 分区标题 ========== */
.section-title{text-align:center;margin-bottom:var(--space-12)}
.section-title h2{font-size:var(--text-3xl);font-weight:800;color:var(--gray-900);letter-spacing:-0.02em}
.section-title h2 .hl{color:var(--accent)}
.section-title p{font-size:var(--text-lg);color:var(--gray-600);max-width:640px;margin:var(--space-4) auto 0;line-height:1.65}

/* ===== 横幅装饰点 ===== */
.banner-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,0.3);margin:0 4px;vertical-align:middle}

/* ========== 装饰卡片系统 ========== */
.deco-card{background:var(--white);border-radius:var(--radius-lg);padding:var(--space-8);box-shadow:0 1px 3px rgba(45,49,57,0.04);border:1px solid rgba(45,49,57,0.06);transition:all var(--duration-normal) var(--ease-out);position:relative;overflow:hidden}
.deco-card:hover{box-shadow:0 8px 28px rgba(22,119,255,0.08), 0 2px 6px rgba(45,49,57,0.05);transform:translateY(-2px);border-color:rgba(22,119,255,0.18)}
/* 带色卡的装饰卡片 */
.deco-card-tinted.blue{background:linear-gradient(180deg,#eef5ff 0%,var(--white) 100%);border-color:rgba(22,119,255,0.12)}
.deco-card-tinted.orange{background:linear-gradient(180deg,#fff7f0 0%,var(--white) 100%);border-color:rgba(255,125,41,0.12)}
.deco-card-tinted.green{background:linear-gradient(180deg,#f2faf0 0%,var(--white) 100%);border-color:rgba(82,196,26,0.12)}
.deco-card-tinted:hover{transform:translateY(-4px)}/* 继承光滑扫光 */
/* 带底色的卡片 */
.deco-card-bg.blue{background:var(--primary-light);border-color:rgba(22,119,255,0.15)}
.deco-card-bg.blue:hover{box-shadow:0 10px 32px rgba(22,119,255,0.15);border-color:rgba(22,119,255,0.3)}
.deco-card-bg.orange{background:var(--accent-light);border-color:rgba(255,125,41,0.15)}
.deco-card-bg.orange:hover{box-shadow:0 10px 32px rgba(255,125,41,0.15);border-color:rgba(255,125,41,0.3)}
.deco-card-bg.green{background:#ecf8e6;border-color:rgba(82,196,26,0.15)}
.deco-card-bg.green:hover{box-shadow:0 10px 32px rgba(82,196,26,0.15);border-color:rgba(82,196,26,0.3)}
.deco-card-bg.gray{background:var(--gray-75);border-color:rgba(45,49,57,0.1)}
.deco-card-bg.gray:hover{box-shadow:0 10px 32px rgba(45,49,57,0.09);border-color:rgba(45,49,57,0.18)}
/* 顶部色带 — 悬停时色带扩张 */
.deco-card-border-top{border-top:3px solid var(--primary);position:relative}
.deco-card-border-top::before{content:'';position:absolute;top:0;left:0;width:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px 0 0 0;transition:width var(--duration-normal) var(--ease-out);pointer-events:none}
.deco-card-border-top:hover::before{width:100%}
.deco-card-border-accent{border-top:3px solid var(--accent);position:relative}
.deco-card-border-accent::before{content:'';position:absolute;top:0;left:0;width:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--primary));border-radius:3px 0 0 0;transition:width var(--duration-normal) var(--ease-out);pointer-events:none}
.deco-card-border-accent:hover::before{width:100%}

/* ========== 图片卡片悬停效果 ========== */
.img-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;cursor:pointer}
.img-card img{transition:all 0.6s cubic-bezier(0.22,1,0.36,1);width:100%;display:block}
.img-card:hover img{transform:scale(1.08)}
.img-card .img-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(22,119,255,0.88));opacity:0;transition:opacity 0.4s ease;display:flex;flex-direction:column;justify-content:flex-end;padding:var(--space-6);color:var(--white)}
.img-card:hover .img-overlay{opacity:1}
.img-card .img-overlay h4{font-size:var(--text-lg);font-weight:700;margin-bottom:var(--space-1)}
.img-card .img-overlay p{font-size:var(--text-sm);opacity:0.85}

/* 按钮高级动效 */
.btn{overflow:hidden;position:relative}
.btn::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,transparent 40%,rgba(255,255,255,0.15) 50%,transparent 60%);opacity:0;transition:all 0.5s ease;pointer-events:none}
.btn:hover::after{opacity:1;transform:translateX(30%)}
.btn-primary:active,.btn-secondary:active{transform:scale(0.97)}

/* 案例卡片 */
.case-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--white);transition:all var(--duration-normal) var(--ease-out);cursor:pointer}
.case-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(22,119,255,0.10),0 4px 12px rgba(45,49,57,0.06)}
.case-card .case-img{width:100%;height:200px;object-fit:cover;transition:transform 0.5s var(--ease-out)}
.case-card:hover .case-img{transform:scale(1.06)}
.case-card .case-body{padding:var(--space-5) var(--space-6);position:relative}
.case-card .case-body .tag{position:absolute;top:-14px;left:var(--space-6)}
.case-card h4{font-size:var(--text-lg);font-weight:700;color:var(--gray-900);margin-bottom:var(--space-2);transition:color var(--duration-fast)}
.case-card:hover h4{color:var(--primary)}
.case-card p{font-size:var(--text-sm);color:var(--gray-600);line-height:1.6}

/* ========== 图标块增强 ========== */
.icon-block{text-align:center;padding:var(--space-6);display:flex;flex-direction:column;align-items:center;gap:var(--space-4);border-radius:var(--radius-lg);transition:all var(--duration-normal) var(--ease-out);cursor:default}
.icon-block .icon-wrap{width:80px;height:80px;border-radius:20px;display:flex;align-items:center;justify-content:center;transition:all var(--duration-normal) var(--ease-spring);will-change:transform}
.icon-block .icon-wrap svg{width:40px;height:40px;stroke-width:2}
.icon-block:hover{background:rgba(22,119,255,0.03)}
.icon-block:hover .icon-wrap{transform:scale(1.12) translateY(-2px)}
.icon-block:hover h4{color:var(--primary)}
.icon-block h4{font-size:var(--text-lg);font-weight:700;color:var(--gray-900);transition:color var(--duration-fast)}
.icon-block p{font-size:var(--text-sm);color:var(--gray-600);line-height:1.6}

/* ========== 装饰区域 ========== */
.deco-section{position:relative;overflow:hidden}
.deco-section::before{content:'';position:absolute;top:0;right:0;width:450px;height:450px;background:radial-gradient(circle,rgba(22,119,255,0.05) 0%,transparent 70%);pointer-events:none}
.deco-section::after{content:'';position:absolute;bottom:0;left:0;width:350px;height:350px;background:radial-gradient(circle,rgba(255,125,41,0.04) 0%,transparent 70%);pointer-events:none}
.deco-section-dark{position:relative;overflow:hidden}
.deco-section-dark::before{content:'';position:absolute;top:-20%;right:-5%;width:500px;height:500px;background:radial-gradient(circle,rgba(255,255,255,0.05) 0%,transparent 70%);pointer-events:none;border-radius:50%}

/* ========== 数字徽标 ========== */
.stat-number{font-size:var(--text-4xl);font-weight:800;line-height:1}
.stat-label{font-size:var(--text-sm);color:var(--gray-600);margin-top:var(--space-1)}

/* ========== 特性列表 ========== */
.feature-item{display:flex;gap:var(--space-3);padding:var(--space-2) 0;align-items:center}
.feature-item .icon{flex-shrink:0;width:24px;height:24px}
.feature-item .icon svg{stroke-width:2.5}
.feature-item p{font-size:var(--text-sm);color:var(--gray-600);line-height:1.6}

/* ========== 流程节点 ========== */
.process-steps{display:flex;align-items:center;justify-content:center;gap:var(--space-3);flex-wrap:wrap;margin-bottom:var(--space-12)}
.process-step{display:flex;align-items:center;gap:var(--space-3)}
.process-step .step-num{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:var(--text-lg);flex-shrink:0;box-shadow:0 3px 12px rgba(22,119,255,0.2)}
.process-step .step-num.primary{background:var(--primary);color:var(--white)}
.process-step .step-num.accent{background:var(--accent);color:var(--white)}
.process-step .step-text{font-size:var(--text-base);font-weight:600;color:var(--gray-800)}
.process-arrow{color:var(--primary);flex-shrink:0}

/* ========== 对比表格 ========== */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px rgba(45,49,57,0.06);border:1px solid var(--gray-100)}
.compare-grid .compare-hd{padding:var(--space-4) var(--space-5);font-weight:700;text-align:center;font-size:var(--text-sm)}
.compare-grid .compare-hd.primary{background:var(--primary);color:var(--white)}
.compare-grid .compare-hd.muted{background:var(--gray-75);color:var(--gray-400)}
.compare-grid .compare-cell{padding:var(--space-4) var(--space-5);font-size:var(--text-sm);line-height:1.55;border-bottom:1px solid var(--gray-100)}
.compare-grid .compare-cell:nth-child(odd){background:var(--white)}
.compare-grid .compare-cell:nth-child(even){background:var(--gray-50);color:var(--gray-600)}

/* ========== 标签系统 ========== */
.tag{display:inline-block;padding:3px 12px;border-radius:20px;font-size:var(--text-xs);font-weight:600}
.tag-primary{background:var(--primary-light);color:var(--primary)}
.tag-accent{background:var(--accent-light);color:var(--accent)}
.tag-green{background:#ecf8e6;color:#389e0d}

/* ========== 分栏装饰线 ========== */
.divider{height:1px;background:var(--gray-100);margin:var(--space-10) 0}

/* ========== CTA 呼出区 ========== */
.cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 60%,var(--primary-deep) 100%);color:var(--white);padding:var(--space-20) 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-40%;right:-10%;width:700px;height:700px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,0.05) 0%,transparent 65%)}
.cta-section::after{content:'';position:absolute;bottom:-50%;left:-5%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(255,125,41,0.07) 0%,transparent 70%)}
.cta-section h2{font-size:var(--text-2xl);font-weight:800;margin-bottom:var(--space-4);position:relative}
.cta-section p{font-size:var(--text-lg);opacity:.8;margin-bottom:var(--space-10);position:relative}
.cta-section .btn-group{display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap;position:relative}
.cta-section .btn-outline{border-color:rgba(255,255,255,0.5)}
.cta-section .btn-outline:hover{background:rgba(255,255,255,0.1);border-color:var(--white)}

/* ========== 小 CTA 条 ========== */
.mini-cta{margin-top:var(--space-10);padding-top:var(--space-8);border-top:1px solid rgba(45,49,57,0.08)}
.mini-cta a.btn-outline{border-color:var(--primary);color:var(--primary)}
.mini-cta a.btn-outline:hover{background:rgba(22,119,255,0.06)}

/* ========== 导航遮罩 (移动端) ========== */
.nav-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.35);z-index:998;opacity:0;visibility:hidden;transition:opacity var(--duration-normal);-webkit-tap-highlight-color:transparent}
.nav-overlay.show{opacity:1;visibility:visible}

/* ========== 触控安全区域 (点击元素最低 44×44px) ========== */
.nav-links>a,.nav-dropdown-menu a,.nav-btn,.btn,.page-btn,.cat-btn{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}
.nav-btn{padding:var(--space-2) var(--space-5)}
/* 全局 :focus-visible 样式 */
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:var(--radius-sm)}
/* 跳过链接 */
.skip-link{position:absolute;top:-100px;left:0;z-index:9999;padding:12px 24px;background:var(--primary);color:#fff;font-weight:600;transition:top 0.2s}
.skip-link:focus{top:12px;left:12px}

/* ========== FAQ 详情动画 ========== */
details.faq-item summary{list-style:none;display:flex;justify-content:space-between;align-items:center}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary .icon{transition:transform 0.3s ease}
details.faq-item[open] summary .icon{transform:rotate(90deg)}
details.faq-item .faq-answer{animation:faqSlide 0.25s ease}
@keyframes faqSlide{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
/* ========== 轮播系统 (带淡入淡出) ========== */
.carousel-slide{transition:opacity 0.4s ease, transform 0.4s ease}
.carousel-slide.active{opacity:1;transform:scale(1)}
.carousel-slide.exit{opacity:0;transform:scale(1.02)}
.carousel-dot{display:block;width:8px!important;height:8px!important;min-width:8px;min-height:8px;border-radius:50%;background:rgba(255,255,255,0.5);border:2px solid transparent;cursor:pointer;transition:all var(--duration-fast);margin:0;padding:0;flex-shrink:0;outline:none}
.carousel-dot.active{background:var(--white)!important;transform:scale(1.3)}
.carousel-dot:hover{background:rgba(255,255,255,0.8)}
@media(max-width:768px){
  .carousel-dot{width:6px!important;height:6px!important;min-width:6px;min-height:6px}
}

/* ========== 轮播移动端适配 (覆盖内联样式) ========== */
.carousel-slide h1{font-size:3.25rem;line-height:1.25;margin-bottom:20px}

/* ========== 页面过渡动画 ========== */
.page-body{animation:pageIn 0.4s ease}
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ========== 骨架屏 ========== */
.skeleton{background:linear-gradient(90deg,var(--gray-75) 25%,var(--gray-100) 50%,var(--gray-75) 75%);background-size:200% 100%;animation:skeletonShimmer 1.5s infinite;border-radius:var(--radius-sm)}
@keyframes skeletonShimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skeleton-text{height:14px;margin-bottom:10px;width:100%}
.skeleton-text-sm{height:10px;width:60%}
.skeleton-block{height:200px;margin-bottom:16px}
.skeleton-card{height:340px;border-radius:var(--radius-lg)}
@media(max-width:768px){
  .carousel-slide h1{font-size:2rem!important}
  .carousel-slide p{font-size:1rem!important}
  .carousel-slide{min-height:420px!important}
  .carousel-slide .container{padding:80px 0 60px!important}
}
@media(max-width:576px){
  .carousel-slide h1{font-size:1.625rem!important}
  .carousel-slide p{font-size:0.9375rem!important;margin-bottom:28px!important}
  .carousel-slide{min-height:360px!important}
  .carousel-slide .container{padding:70px 0 50px!important}
}
@media(max-width:390px){
  .carousel-slide h1{font-size:1.5rem!important}
  .carousel-slide{min-height:340px!important}
}
@media(max-width:360px){
  .carousel-slide h1{font-size:1.375rem!important}
  .carousel-slide{min-height:320px!important}
  .carousel-slide .btn-group .btn{font-size:0.875rem!important;padding:var(--space-3) var(--space-5)!important}
}

/* ========== 表单移动端适配 ========== */
.contact-form input,.contact-form textarea{font-size:16px!important} /* 防止iOS聚焦缩放 */
@media(max-width:576px){
  .contact-form .btn{width:100%}
}

/* ========== 流程步骤移动端折叠 ========== */
@media(max-width:576px){
  .process-steps{flex-direction:column;align-items:flex-start;gap:var(--space-4)}
  .process-step{width:100%}
  .process-arrow{display:none}
}

/* ========== 对比表格移动端 ========== */
@media(max-width:576px){
  .compare-grid{grid-template-columns:1fr;border:none;box-shadow:none}
  .compare-grid .compare-hd{display:none}
  .compare-grid .compare-cell{padding:var(--space-3) var(--space-4)!important;border:1px solid var(--gray-100)!important;margin-bottom:var(--space-2);border-radius:var(--radius)!important}
  .compare-grid .compare-cell:nth-child(odd){background:var(--gray-50)!important}
}

/* ========== 页脚移动端 ========== */
@media(max-width:576px){
  .footer{padding:var(--space-10) 0 var(--space-6)}
  .footer-phone{font-size:var(--text-xl)}
}

/* ========== 移动端 ========== */
@media(max-width:576px){
  :root{--radius:6px;--radius-lg:10px;--radius-xl:12px}
  .page-body{padding-top:60px}
  .section{padding:var(--space-12) 0}
  /* 内联方式的双列在手机变为单列 */
  .contact-info-grid{grid-template-columns:1fr!important}
}