/* ============================================================
   中益环保 — 化工环保行业 生态工业风前端模板 v2
   配色：深青绿 + 清新绿 + 琥珀点缀 + 纯净白
   ============================================================ */

:root {
  --primary: #0d5c4f;
  --primary-dark: #094439;
  --primary-light: #14b8a6;
  --primary-pale: #e6f7f4;
  --accent: #84cc16;
  --accent-light: #bef264;
  --accent-pale: #f0fdf4;
  --amber: #f59e0b;
  --amber-light: #fcd34d;
  --amber-pale: #fffbeb;
  --white: #ffffff;
  --off-white: #f8faf9;
  --gray-50: #f7f9f8;
  --gray-100: #ecf2f0;
  --gray-200: #dde7e3;
  --gray-300: #c4d3cd;
  --gray-500: #8a9b96;
  --gray-700: #5a6b66;
  --gray-900: #1a2e2a;
  --text: #1a2e2a;
  --text-secondary: #5a6b66;
  --text-muted: #8a9b96;
  --border: #dde7e3;
  --border-light: #ecf2f0;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --container: 1200px;
  --shadow-sm: 0 1px 3px rgba(13,92,79,.06);
  --shadow: 0 2px 12px rgba(13,92,79,.07);
  --shadow-md: 0 6px 24px rgba(13,92,79,.09);
  --shadow-lg: 0 16px 48px rgba(13,92,79,.13);
  --shadow-xl: 0 24px 64px rgba(13,92,79,.16);
  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);background:var(--off-white);color:var(--text);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block}ul,ol{list-style:none}
/* 锚点滚动不被固定头部遮挡 */
[id]{scroll-margin-top:84px}
/* 键盘可达性：聚焦可见 */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ====== 导航栏 ====== */
.topbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid transparent;height:68px;transition:var(--transition)}
.topbar.scrolled{border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.topbar.hidden{transform:translateY(-100%)}
.topbar-inner{max-width:var(--container);margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 24px}
.topbar-logo{display:flex;align-items:center}
.topbar-logo img{height:44px;width:auto;max-width:200px}@media(max-width:992px){.topbar-logo img{height:34px;max-width:150px}}
.logo-fallback{font-size:19px;font-weight:800;color:var(--primary);white-space:nowrap;letter-spacing:-.3px}@media(max-width:992px){.logo-fallback{font-size:15px}}
.topbar-nav{display:flex;gap:2px;align-items:center}
.topbar-nav a{font-size:14px;font-weight:500;color:var(--text-secondary);padding:8px 18px;border-radius:50px;transition:var(--transition);white-space:nowrap}
.topbar-nav a:hover,.topbar-nav a.active{color:var(--primary);background:var(--primary-pale)}
.topbar-nav a.btn-nav{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);font-weight:700;padding:10px 24px;box-shadow:0 3px 14px rgba(13,92,79,.25)}
.topbar-nav a.btn-nav:hover{transform:translateY(-2px);box-shadow:0 5px 20px rgba(13,92,79,.35)}

.hamburger{display:none;width:42px;height:42px;border:none;background:var(--white);border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;z-index:1002;box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.hamburger span{display:block;width:20px;height:2px;background:var(--primary);border-radius:2px;transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;bottom:0;z-index:1001;background:rgba(13,92,79,.4);opacity:0;pointer-events:none;transition:opacity .3s}
.mobile-menu.active{opacity:1;pointer-events:auto}
.mobile-menu-inner{background:var(--white);padding:16px 20px 32px;max-height:calc(100vh - 68px);overflow-y:auto;transform:translateY(-12px);transition:transform .3s}
.mobile-menu.active .mobile-menu-inner{transform:translateY(0)}
.mobile-menu a{display:flex;align-items:center;gap:12px;padding:14px 16px;font-size:15px;font-weight:500;color:var(--text);border-radius:10px;border-bottom:1px solid var(--gray-100)}
.mobile-menu a.cta{margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);justify-content:center;font-weight:700;border:none;border-radius:50px}
@media(max-width:992px){.topbar-nav{display:none}.hamburger{display:flex}.mobile-menu{display:block}}

/* ====== Hero ====== */
.hero{position:relative;margin-top:68px;background:linear-gradient(150deg,var(--primary-dark) 0%,var(--primary) 40%,var(--primary-light) 100%);color:var(--white);overflow:hidden;min-height:560px;display:flex;flex-direction:column}
.hero::before{content:'';position:absolute;top:-30%;right:-15%;width:700px;height:700px;background:radial-gradient(circle,rgba(132,204,22,.1),transparent 65%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(20,184,166,.08),transparent 65%);pointer-events:none}
.hero-slide{position:relative;width:100%;aspect-ratio:2580/800;max-height:520px;overflow:hidden;background:var(--primary-dark)}
.hero-slide-track{display:flex;transition:transform .5s cubic-bezier(.4,0,.2,1);height:100%}
.hero-slide-item{flex:0 0 100%;position:relative;overflow:hidden}
.hero-slide-item::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(9,68,57,.55));pointer-events:none}
.hero-slide-item img{width:100%;height:100%;object-fit:cover}
.hero-slide-item a{display:block;width:100%;height:100%}
.hero-inner{max-width:var(--container);margin:0 auto;position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;width:100%;padding:50px 24px 40px}
.hero-text h1{font-size:clamp(28px,4vw,46px);font-weight:900;line-height:1.25;margin-bottom:20px;letter-spacing:-.5px}
.hero-text .hl{background:linear-gradient(135deg,var(--accent-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:inline}
.hero-text p{font-size:16px;opacity:.85;line-height:1.9;margin-bottom:32px;max-width:500px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-badge{display:inline-block;background:rgba(132,204,22,.12);border:1px solid rgba(132,204,22,.3);color:var(--accent-light);font-size:12px;font-weight:600;padding:6px 20px;border-radius:50px;margin-bottom:18px;letter-spacing:.5px}
.btn-hero{padding:14px 34px;border-radius:50px;font-size:15px;font-weight:700;transition:var(--transition);display:inline-flex;align-items:center;gap:8px}
.btn-hero.primary{background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--primary-dark);box-shadow:0 4px 20px rgba(132,204,22,.35)}
.btn-hero.primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(132,204,22,.45)}
.btn-hero.outline{border:2px solid rgba(255,255,255,.3);color:var(--white);background:transparent}
.btn-hero.outline:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);transform:translateY(-2px)}
.hero-stats{display:flex;gap:40px;margin-top:36px;flex-wrap:wrap}
.hero-stats .hs-item{text-align:center;position:relative}
.hero-stats .hs-item::after{content:'';position:absolute;right:-20px;top:10%;height:60%;width:1px;background:rgba(255,255,255,.1)}
.hero-stats .hs-item:last-child::after{display:none}
.hero-stats .hs-num{font-size:30px;font-weight:900;color:var(--accent-light);line-height:1}
.hero-stats .hs-label{font-size:12px;opacity:.55;margin-top:6px}
.hero-card{background:rgba(255,255,255,.08);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:30px;width:100%;max-width:440px}
.hero-card h3{font-size:16px;font-weight:700;margin-bottom:16px;color:var(--accent-light)}
.hero-news-item{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:10px;transition:var(--transition);font-size:14px}
.hero-news-item:last-child{border:none}
.hero-news-item:hover{color:var(--accent-light)}
.hero-news-item .dot-icon{width:6px;height:6px;background:var(--accent);border-radius:50%;flex-shrink:0}
.hero-news-item time{font-size:11px;opacity:.35;flex-shrink:0;margin-left:auto}
@media(max-width:992px){.hero{padding:0;min-height:auto}.hero-slide{aspect-ratio:16/9;max-height:260px}.hero-inner{grid-template-columns:1fr;gap:36px;text-align:center;padding:44px 16px 36px}.hero-text p{margin:0 auto 28px}.hero-btns{justify-content:center}.hero-stats{justify-content:center;gap:28px}.hero-card{max-width:100%}}

/* ====== 通用板块 ====== */
.section{padding:80px 24px}
.section-alt{background:var(--white)}
.section-header{text-align:center;margin-bottom:56px}
.section-header .label{display:block;font-size:12px;font-weight:800;color:var(--primary-light);letter-spacing:4px;text-transform:uppercase;margin-bottom:12px}
.section-header h2{font-size:clamp(28px,4vw,38px);font-weight:900;margin-bottom:16px;letter-spacing:-.5px;line-height:1.2;color:var(--primary-dark)}
.section-header h2::after{content:'';display:block;width:50px;height:3px;background:linear-gradient(90deg,var(--primary-light),var(--accent));border-radius:2px;margin:18px auto 0}
.section-header p{font-size:16px;color:var(--text-muted);max-width:600px;margin:0 auto;line-height:1.8}

/* ====== 核心业务卡片 ====== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}@media(max-width:900px){.services-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.services-grid{grid-template-columns:1fr}}
.service-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}
.service-card-link{display:flex;flex-direction:column;flex:1;color:inherit}
.service-img{width:100%;aspect-ratio:2580/800;overflow:hidden;background:var(--gray-100);position:relative;display:flex;align-items:center;justify-content:center}
.service-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s;position:absolute;inset:0}
.service-card:hover .service-img img{transform:scale(1.06)}
.service-img-text{position:relative;z-index:1;color:rgba(255,255,255,.9);font-size:22px;font-weight:800;letter-spacing:2px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.service-body{padding:20px 22px 24px}
.service-body h3{font-size:17px;font-weight:700;margin-bottom:6px;color:var(--primary-dark)}
.service-body p{font-size:13px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.service-subs{padding:0 22px 16px;display:flex;flex-wrap:wrap;gap:6px}
.service-subs a,.service-subs span{padding:4px 12px;background:var(--gray-50);border-radius:50px;font-size:11px;color:var(--text-secondary);transition:var(--transition);border:1px solid transparent}
.service-subs a:hover{background:var(--primary-pale);color:var(--primary);border-color:var(--primary-light)}

/* ====== 企业优势 ====== */
.strength-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}@media(max-width:992px){.strength-grid{grid-template-columns:repeat(2,1fr)}}
.strength-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:36px 24px;text-align:center;transition:var(--transition);box-shadow:var(--shadow);position:relative;overflow:hidden}
.strength-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary-light),var(--accent),var(--amber));opacity:0;transition:opacity .4s}
.strength-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.strength-card:hover::before{opacity:1}
.strength-icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,var(--primary-pale),var(--gray-100));display:flex;align-items:center;justify-content:center;margin:0 auto 18px;transition:var(--transition)}
.strength-icon svg{width:28px;height:28px;color:var(--primary)}
.strength-card:hover .strength-icon{background:linear-gradient(135deg,var(--primary-pale),var(--accent-pale))}
.strength-card:hover .strength-icon svg{color:var(--primary-light)}
.strength-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.strength-card p{font-size:13px;color:var(--text-secondary);line-height:1.7}

/* ====== 企业简介 ====== */
.about-teaser{display:grid;grid-template-columns:3fr 2fr;gap:48px;align-items:center;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border)}
.about-teaser-text{padding:48px}
.about-teaser-text p{font-size:15px;line-height:2;color:var(--text-secondary);margin-bottom:16px}
.about-teaser-img{height:100%;min-height:340px;overflow:hidden}
.about-teaser-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.about-teaser:hover .about-teaser-img img{transform:scale(1.05)}
.about-teaser-stats{display:flex;gap:32px;margin:28px 0;flex-wrap:wrap}
.ats-item{text-align:center;flex:1;min-width:80px}
.ats-num{font-size:30px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.ats-label{font-size:12px;color:var(--text-muted);margin-top:6px}
@media(max-width:992px){.about-teaser{grid-template-columns:1fr}.about-teaser-text{padding:32px}.about-teaser-img{min-height:220px}}

/* ====== 新闻卡片 ====== */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px}@media(max-width:768px){.news-grid{grid-template-columns:1fr}}
.news-card{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition)}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}
.news-card .thumb{position:relative;aspect-ratio:2580/800;overflow:hidden;background:linear-gradient(135deg,var(--primary-pale),var(--gray-100))}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .thumb .thumb-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:48px;color:var(--gray-300);background:linear-gradient(135deg,var(--primary-pale),var(--gray-100))}
.news-card .cat-tag{position:absolute;top:14px;left:14px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);font-size:10px;font-weight:700;padding:5px 14px;border-radius:50px;z-index:2}
.news-card .pin-tag{position:absolute;top:14px;right:14px;background:var(--amber);color:var(--white);font-size:10px;font-weight:700;padding:5px 12px;border-radius:50px;z-index:2}
.news-card .body{padding:22px 24px 24px}
.news-card .body h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--transition)}
.news-card:hover .body h3{color:var(--primary-light)}
.news-card .body .desc{font-size:13px;color:var(--text-secondary);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .body .meta{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--text-muted);padding-top:14px;border-top:1px solid var(--gray-100)}
.news-card .body .meta .views{color:var(--primary-light);font-weight:600}

/* ====== 合作伙伴 ====== */
.partners-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.partner-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 32px;font-size:14px;font-weight:500;color:var(--text-secondary);transition:var(--transition);position:relative;overflow:hidden}
.partner-item::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--primary-pale),var(--accent-pale));opacity:0;transition:opacity .3s}
.partner-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}
.partner-item:hover::before{opacity:1}
.partner-item:hover span{position:relative;z-index:1;color:var(--primary-dark);font-weight:600}

/* ====== 合作表单 ====== */
.form-section{background:linear-gradient(150deg,var(--primary-dark),var(--primary));padding:80px 24px;color:var(--white)}
.form-wrap{max-width:920px;margin:0 auto}
.form-wrap .section-header .label{color:var(--accent-light)}
.form-wrap .section-header h2,.form-wrap .section-header p{color:var(--white)}
.form-container{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.form-main{background:var(--white);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow-xl)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px}
.form-group label .req{color:var(--amber)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;outline:none;transition:var(--transition);background:var(--off-white);color:var(--text)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary-light);box-shadow:0 0 0 4px rgba(20,184,166,.08);background:var(--white)}
.form-group textarea{resize:vertical;min-height:90px}
.form-agree{font-size:12px;color:var(--text-secondary);margin:16px 0;display:flex;align-items:flex-start;gap:8px}
.form-agree input{margin-top:2px;flex-shrink:0}
.form-agree a{color:var(--primary-light);text-decoration:underline}
.btn-submit{width:100%;padding:16px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);border:none;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;transition:var(--transition);box-shadow:0 4px 20px rgba(13,92,79,.3);letter-spacing:.5px}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(13,92,79,.4)}
.form-info h3{font-size:22px;font-weight:700;margin-bottom:20px}
.form-info ul li{padding:12px 0;font-size:14px;border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:12px}
.form-info ul li::before{content:'✓';display:inline-flex;width:26px;height:26px;background:var(--accent);color:var(--primary-dark);border-radius:50%;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.form-success{display:none;text-align:center;padding:48px}
.form-success.show{display:block}
.form-success .icon{width:80px;height:80px;margin:0 auto 24px;background:var(--accent-pale);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:40px;color:var(--primary)}
.form-success h3{font-size:22px;font-weight:700;margin-bottom:8px;color:var(--text)}
.form-success p{color:var(--text-secondary)}
@media(max-width:992px){.form-container{grid-template-columns:1fr;gap:28px}.form-info{text-align:center}}

/* ====== 页脚 ====== */
.footer{background:var(--primary-dark);color:rgba(255,255,255,.7);padding:60px 24px 32px}
.footer-grid{max-width:var(--container);margin:0 auto 40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:40px}@media(max-width:768px){.footer-grid{gap:28px}}
.footer-col h4{color:var(--white);font-size:16px;font-weight:700;margin-bottom:18px}
.footer-col p,.footer-col a{font-size:13px;line-height:2.2;display:block;transition:var(--transition)}
.footer-col a:hover{color:var(--accent-light)}
.footer-contact{margin-top:8px;color:var(--accent-light)}
.footer-bottom{max-width:var(--container);margin:0 auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);display:flex;justify-content:space-between;align-items:center;font-size:12px;flex-wrap:wrap;gap:12px;opacity:.5}
.footer-bottom a:hover{color:var(--white)}

/* ====== 返回顶部 ====== */
.back-to-top{position:fixed;bottom:28px;right:28px;width:46px;height:46px;background:var(--primary-light);color:var(--white);border:none;border-radius:50%;cursor:pointer;box-shadow:var(--shadow-md);display:none;align-items:center;justify-content:center;font-size:22px;z-index:50;transition:var(--transition)}
.back-to-top.show{display:flex}
.back-to-top:hover{background:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* ====== 滚动动画 ====== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .7s ease,transform .8s cubic-bezier(.22,.61,.36,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ====== 幻灯片控制 ====== */
.slide-arrow{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);color:var(--white);font-size:20px;cursor:pointer;z-index:10;transition:var(--transition);display:flex;align-items:center;justify-content:center}
.slide-arrow:hover{background:var(--accent);border-color:var(--accent);color:var(--primary-dark)}
.slide-prev{left:24px}.slide-next{right:24px}
.slide-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:10}
.slide-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.25);cursor:pointer;transition:var(--transition);border:none}
.slide-dot.active{background:var(--accent);transform:scale(1.3);box-shadow:0 0 12px rgba(132,204,22,.5)}
.slide-caption{position:absolute;bottom:20px;left:20px;right:20px;background:rgba(9,68,57,.7);backdrop-filter:blur(12px);color:var(--white);padding:12px 24px;border-radius:12px;font-size:14px;font-weight:600;z-index:5}@media(max-width:992px){.slide-arrow{width:36px;height:36px;font-size:16px}.slide-caption{bottom:8px;left:8px;right:8px;font-size:12px;padding:8px 14px}}

/* ====== Toast ====== */
.toast{position:fixed;top:88px;left:50%;transform:translateX(-50%);z-index:2000;background:var(--white);border-radius:50px;padding:14px 32px;box-shadow:var(--shadow-lg);font-size:14px;font-weight:600;display:none;gap:8px;align-items:center}
.toast.success{background:var(--accent-pale);color:#365314;display:flex}
.toast.error{background:#fee2e2;color:#b91c1c;display:flex}
.toast-icon{font-weight:700;font-size:15px;line-height:1}
/* 表单提交中的加载指示（app.js 注入 .spinner） */
.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-3px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ====== 文章排版 ====== */
.page-main{padding-top:68px}
.page-hero{position:relative;overflow:hidden;background:linear-gradient(150deg,var(--primary-dark),var(--primary),var(--primary-light))}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 30%,rgba(132,204,22,.08),transparent 50%),radial-gradient(ellipse at 30% 70%,rgba(20,184,166,.04),transparent 40%)}
.page-hero-inner{position:relative;z-index:1;max-width:800px;margin:0 auto;padding:60px 24px;text-align:center;color:var(--white)}
.page-hero-badge{display:inline-block;background:rgba(132,204,22,.15);border:1px solid rgba(132,204,22,.3);color:var(--accent-light);font-size:11px;font-weight:700;padding:5px 18px;border-radius:50px;letter-spacing:2px;margin-bottom:18px}
.page-hero h1{font-size:clamp(28px,5vw,42px);font-weight:900;margin-bottom:12px}
.page-hero p{font-size:16px;opacity:.7;max-width:500px;margin:0 auto}
.article-wrap{max-width:var(--container);margin:0 auto;padding:40px 24px}
.article-header{margin-bottom:32px;padding-bottom:24px;border-bottom:2px solid var(--gray-100)}
.article-header h1{font-size:clamp(22px,3.5vw,28px);font-weight:900;line-height:1.5;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--text-muted);align-items:center}
.article-cat{background:var(--primary-light);color:var(--white);padding:4px 16px;border-radius:50px;font-size:11px;font-weight:700}
.article-cover{margin-bottom:32px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.article-cover img{width:100%;aspect-ratio:2580/800;object-fit:cover;display:block}
.article-summary{background:linear-gradient(135deg,var(--primary-pale),var(--accent-pale));border-left:4px solid var(--primary-light);padding:16px 24px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-bottom:28px;font-size:14px;color:var(--primary-dark);line-height:1.9}
.article-pin{color:var(--amber);font-weight:700;font-size:12px}
.article-body{font-size:16px;line-height:2;color:var(--text-secondary);word-wrap:break-word}
.article-body h2{font-size:22px;font-weight:800;color:var(--text);margin:36px 0 18px;padding-bottom:12px;border-bottom:2px solid var(--gray-100)}
.article-body h3{font-size:19px;font-weight:700;color:var(--text);margin:28px 0 14px}
.article-body h4{font-size:16px;font-weight:700;color:var(--text);margin:22px 0 12px}
.article-body p{margin-bottom:18px;text-align:justify}
.article-body ul,.article-body ol{margin:14px 0 14px 32px}
.article-body ul{list-style:disc}.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px;padding-left:4px}
.article-body strong{color:var(--text);font-weight:700}
.article-body blockquote{border-left:4px solid var(--primary-light);background:var(--off-white);padding:16px 24px;border-radius:0 10px 10px 0;margin:24px 0;color:var(--text-secondary)}
.article-body a{color:var(--primary-light);text-decoration:underline;text-underline-offset:3px}
.article-body code{background:var(--gray-50);padding:2px 8px;border-radius:4px;font-size:.9em;font-family:'SF Mono',Consolas,monospace;color:#c62828}
.article-body pre{background:var(--primary-dark);color:#e2e8f0;padding:20px 24px;border-radius:var(--radius);overflow-x:auto;font-size:14px;line-height:1.7;margin:20px 0}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-body hr{border:none;height:1px;background:var(--gray-200);margin:32px 0}
.article-tags{margin-top:28px;padding-top:20px;border-top:1px solid var(--gray-200);display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}
.article-tags a{display:inline-block;padding:6px 16px;background:var(--gray-50);border-radius:50px;font-size:11px;color:var(--primary-dark);transition:var(--transition)}
.article-tags a:hover{background:var(--primary-light);color:var(--white)}
.article-nav{display:flex;gap:24px;justify-content:space-between;margin:36px 0;flex-wrap:wrap}
.article-nav a{flex:1;min-width:220px;background:var(--off-white);padding:20px 24px;border-radius:var(--radius);transition:var(--transition);border:1px solid transparent}
.article-nav a:hover{background:var(--white);border-color:var(--border);box-shadow:var(--shadow-md)}
.article-nav .nav-label{font-size:11px;color:var(--text-muted);font-weight:600;margin-bottom:4px}
.article-nav .nav-title{font-weight:500;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.related-box{background:var(--white);border-radius:var(--radius);padding:28px;border:1px solid var(--border);margin-bottom:32px}
.related-box h3{font-size:16px;font-weight:700;margin-bottom:18px}
.related-list{display:flex;flex-wrap:wrap;gap:8px}
.related-list a{padding:8px 18px;background:var(--gray-50);border-radius:50px;font-size:12px;color:var(--text-secondary);transition:var(--transition)}
.related-list a:hover{background:var(--primary-pale);color:var(--primary)}
.ai-badge{margin-top:24px;padding:12px 18px;background:var(--amber-pale);border:1px solid var(--amber-light);border-radius:10px;font-size:12px;color:#92400e}
.empty-state{text-align:center;padding:100px 24px;color:var(--text-muted)}
.empty-state .empty-icon{font-size:72px;margin-bottom:18px}
.empty-state h1{font-size:24px;color:var(--text);margin:18px 0}
.empty-state a{display:inline-block;margin-top:18px;padding:12px 32px;background:var(--primary-light);color:var(--white);border-radius:50px;font-weight:600}
.about-content{max-width:1000px;margin:0 auto;padding:60px 24px}
.about-intro{font-size:16px;line-height:2;color:var(--text-secondary);margin-bottom:56px;text-align:center;max-width:700px;margin-left:auto;margin-right:auto}
.about-content h2{font-size:26px;font-weight:800;margin-bottom:28px;display:flex;align-items:center;gap:10px}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin-bottom:56px}
.info-card{background:var(--white);border-radius:var(--radius);padding:36px;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition)}
.info-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.info-card .icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.info-card .icon.blue{background:linear-gradient(135deg,var(--primary-pale),var(--gray-100));color:var(--primary)}
.info-card .icon.gold{background:linear-gradient(135deg,var(--amber-pale),var(--amber-light));color:var(--amber)}
.info-card .icon.green{background:linear-gradient(135deg,var(--accent-pale),var(--accent-pale));color:var(--accent)}
.info-card .icon.si-purple{background:linear-gradient(135deg,#f3e8ff,#e9d5ff);color:#7c3aed}
.info-card .icon.si-orange{background:linear-gradient(135deg,var(--amber-pale),var(--amber-light));color:var(--amber)}
.info-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.info-card p{font-size:14px;color:var(--text-secondary);line-height:1.8}
.timeline{position:relative;padding-left:52px;margin:36px 0 56px}
.timeline::before{content:'';position:absolute;left:20px;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--primary-light),var(--primary),var(--accent))}
.tl-item{position:relative;margin-bottom:32px}
.tl-dot{position:absolute;left:-42px;top:4px;width:22px;height:22px;border-radius:50%;background:var(--primary-light);border:4px solid var(--primary-pale);box-shadow:0 0 0 4px var(--white);transition:var(--transition)}
.tl-item:hover .tl-dot{transform:scale(1.2);background:var(--accent)}
.tl-content{background:var(--white);border-radius:var(--radius-sm);padding:20px 24px;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition)}
.tl-item:hover .tl-content{border-color:var(--primary-light);box-shadow:var(--shadow)}
.tl-content h4{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--primary-dark)}
.tl-content p{font-size:13px;color:var(--text-secondary)}
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:32px 0 48px}@media(max-width:768px){.stats-bar{grid-template-columns:repeat(2,1fr)}}
.stat-box{text-align:center;padding:32px 16px;background:var(--white);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition)}
.stat-box:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.stat-box .num{font-size:36px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1.1}
.stat-box .label{font-size:13px;color:var(--text-muted);margin-top:8px}
.section-cta{text-align:center;margin-top:48px}
.section-cta::before{content:'';display:block;width:80px;height:2px;background:linear-gradient(90deg,transparent,var(--gray-200),transparent);margin:0 auto 28px}

/* ====== 面包屑 ====== */
.breadcrumb{padding:14px 0;font-size:13px;color:var(--text-muted)}
.breadcrumb a{color:var(--primary-dark);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary-light);text-decoration:underline}
.breadcrumb span{color:var(--text-secondary)}

/* ====== 分页 ====== */
.pagination-wrap{display:flex;flex-direction:column;align-items:center;gap:16px;margin-top:48px;padding:28px 0}
.pagination{display:flex;gap:4px;justify-content:center;flex-wrap:wrap}
.pagination a,.pagination .current,.pagination .dots{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 10px;border-radius:10px;font-size:14px;font-weight:500;transition:var(--transition)}
.pagination a{background:var(--white);border:1.5px solid var(--border);color:var(--text-secondary)}
.pagination a:hover{background:var(--gray-50);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.pagination .current{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);font-weight:700;box-shadow:0 4px 16px rgba(13,92,79,.2)}
.pagination .dots{color:var(--gray-300)}
.pagination-info{font-size:13px;color:var(--text-muted);background:var(--gray-50);padding:6px 20px;border-radius:50px}

/* ====== 侧边栏 ====== */
.layout{max-width:var(--container);margin:0 auto;padding:40px 24px;display:flex;gap:36px;align-items:flex-start}
.layout .sidebar{flex:0 0 270px;position:sticky;top:92px}
.sidebar-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px;box-shadow:var(--shadow)}
.sidebar-card h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--primary-dark);padding-bottom:12px;border-bottom:2px solid var(--gray-100)}
.sidebar-card a{display:block;font-size:13px;color:var(--text-secondary);padding:8px 12px;border-radius:8px;margin-bottom:2px;transition:var(--transition)}
.sidebar-card a:hover,.sidebar-card a.act{background:var(--primary-pale);color:var(--primary);font-weight:600}
.hot-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--gray-100);font-size:13px}
.hot-num{width:24px;height:24px;border-radius:6px;background:var(--gray-100);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0}
.hot-num.top{background:var(--amber);color:#7c2d12}
.tag-cloud{display:flex;flex-wrap:wrap;gap:6px}
.tag-cloud a{padding:6px 14px!important;border:1px solid var(--border);border-radius:50px!important;font-size:12px!important;margin:0!important}
.tag-cloud a:hover{background:var(--primary-light)!important;color:var(--white)!important;border-color:var(--primary-light)!important}
.main-content{flex:1;min-width:0}@media(max-width:992px){.layout{flex-direction:column}.layout .sidebar{flex:none;position:static;width:100%}}

/* ====== Hero 粒子动画（app.js 动态创建）====== */
.hero-particles{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.6}