*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#FF6B6B;
  --brand-dark:#E85555;
  --brand-light:#FFE8E8;
  --brand-glow:rgba(255,107,107,.35);
  --accent:#FF9E7A;
  --accent-2:#FFB88C;
  --bg:#FFFFFF;
  --bg-soft:#F9FAFB;
  --bg-glass:rgba(255,255,255,.72);
  --text:#1A1A2E;
  --text-muted:#5A5A72;
  --border:#E8E8F0;
  --border-soft:rgba(232,232,240,.7);
  --card:#FFFFFF;
  --shadow:0 4px 20px rgba(0,0,0,.06);
  --shadow-lg:0 18px 48px rgba(26,26,46,.12);
  --shadow-brand:0 12px 30px rgba(255,107,107,.18);
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:26px;
  --max:1200px;
  --nav-h:68px;
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
}
[data-theme="dark"]{
  --bg:#12121A;
  --bg-soft:#1A1A24;
  --bg-glass:rgba(18,18,26,.72);
  --text:#EDEDF5;
  --text-muted:#A0A0B8;
  --border:#2A2A38;
  --border-soft:rgba(42,42,56,.7);
  --card:#1A1A24;
  --shadow:0 4px 20px rgba(0,0,0,.4);
  --shadow-lg:0 18px 48px rgba(0,0,0,.55);
  --shadow-brand:0 12px 30px rgba(255,107,107,.25);
  --brand-light:#2A1A1A;
  --brand-glow:rgba(255,107,107,.28);
}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  transition:background .35s var(--ease),color .35s var(--ease);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  background:
    radial-gradient(560px 380px at 8% -4%,rgba(255,107,107,.10),transparent 62%),
    radial-gradient(520px 360px at 96% 6%,rgba(255,158,122,.10),transparent 60%),
    radial-gradient(620px 420px at 50% 110%,rgba(255,184,140,.08),transparent 65%);
}
[data-theme="dark"] body::before{
  background:
    radial-gradient(560px 380px at 8% -4%,rgba(255,107,107,.14),transparent 62%),
    radial-gradient(520px 360px at 96% 6%,rgba(255,158,122,.10),transparent 60%),
    radial-gradient(620px 420px at 50% 110%,rgba(255,184,140,.07),transparent 65%);
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--brand),var(--accent));border-radius:8px;border:2px solid var(--bg-soft)}
::-webkit-scrollbar-thumb:hover{background:var(--brand-dark)}

/* 阅读进度条 */
#reading-progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--accent),var(--accent-2));z-index:9999;transition:width .1s linear;box-shadow:0 0 12px var(--brand-glow)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--bg-glass);
  backdrop-filter:blur(18px) saturate(180%);
  -webkit-backdrop-filter:blur(18px) saturate(180%);
  border-bottom:1px solid var(--border-soft);
  transition:background .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}
.site-header:hover{box-shadow:0 6px 26px rgba(26,26,46,.06)}
[data-theme="dark"] .site-header:hover{box-shadow:0 6px 26px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:.4px;transition:transform .3s var(--ease-spring)}
.logo:hover{transform:scale(1.04)}
.logo svg{width:38px;height:38px;flex-shrink:0;filter:drop-shadow(0 4px 10px var(--brand-glow));transition:transform .4s var(--ease-spring)}
.logo:hover svg{transform:rotate(-6deg) scale(1.05)}
.logo-text{background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 13px;border-radius:10px;font-size:.94rem;color:var(--text-muted);transition:color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);white-space:nowrap;position:relative}
.nav-links a::after{content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-links a:hover{color:var(--brand);background:var(--brand-light);transform:translateY(-1px)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-box{position:relative}
.search-box input{
  width:180px;padding:9px 38px 9px 15px;border-radius:22px;
  border:1px solid var(--border);background:var(--bg-soft);color:var(--text);
  font-size:.9rem;outline:none;
  transition:width .35s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.search-box input::placeholder{color:var(--text-muted);opacity:.8}
.search-box input:focus{width:230px;border-color:var(--brand);background:var(--bg);box-shadow:0 0 0 4px var(--brand-light),0 8px 22px var(--brand-glow)}
.search-box button{position:absolute;right:7px;top:50%;transform:translateY(-50%);padding:5px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease)}
.search-box button:hover{color:#fff;background:var(--brand);transform:translateY(-50%) scale(1.08)}
.icon-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease),transform .28s var(--ease-spring);border:1px solid var(--border);color:var(--text)}
.icon-btn:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand);transform:translateY(-2px) rotate(6deg)}
.icon-btn:active{transform:translateY(0) scale(.95)}
.mobile-menu-btn{display:none}

/* 移动菜单 */
.mobile-menu{
  position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;
  background:var(--bg-glass);backdrop-filter:blur(22px) saturate(180%);-webkit-backdrop-filter:blur(22px) saturate(180%);
  z-index:999;padding:20px;
  transform:translateX(100%);transition:transform .38s var(--ease);
  overflow-y:auto;
}
.mobile-menu.open{transform:translateX(0);box-shadow:var(--shadow-lg)}
.mobile-menu a{display:block;padding:14px 16px;border-radius:12px;font-size:1.05rem;border-bottom:1px solid var(--border-soft);transition:background .25s var(--ease),color .25s var(--ease),padding-left .25s var(--ease)}
.mobile-menu a:hover{background:var(--brand-light);color:var(--brand);padding-left:22px}

/* Banner 轮播 */
.banner{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin:28px 0;background:linear-gradient(135deg,var(--brand-light) 0%,rgba(255,184,140,.16) 48%,rgba(255,232,232,.35) 100%);border:1px solid var(--border-soft);box-shadow:var(--shadow-lg)}
[data-theme="dark"] .banner{background:linear-gradient(135deg,rgba(42,26,26,.9) 0%,rgba(26,26,36,.92) 55%,rgba(42,26,26,.85) 100%)}
.banner::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 88% 12%,rgba(255,107,107,.16),transparent 60%);pointer-events:none}
.banner-track{display:flex;transition:transform .65s var(--ease);will-change:transform}
.banner-slide{min-width:100%;padding:56px 48px;display:flex;align-items:center;gap:40px;min-height:340px}
.banner-content{flex:1;z-index:2}
.banner-tag{display:inline-block;padding:6px 15px;border-radius:20px;background:var(--bg-glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--brand);font-size:.85rem;font-weight:700;margin-bottom:16px;border:1px solid rgba(255,107,107,.28);box-shadow:0 4px 14px var(--brand-glow);letter-spacing:.3px}
.banner-content h1,.banner-content h2{font-size:clamp(1.6rem,3.5vw,2.5rem);line-height:1.28;margin-bottom:16px;font-weight:800;letter-spacing:-.02em}
.banner-content p{color:var(--text-muted);font-size:1.05rem;max-width:520px;margin-bottom:24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:30px;font-weight:600;font-size:.95rem;transition:transform .28s var(--ease-spring),box-shadow .28s var(--ease),background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);transform:translateX(-120%);transition:transform .6s var(--ease)}
.btn:hover::after{transform:translateX(120%)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 6px 18px var(--brand-glow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px var(--brand-glow)}
.btn-primary:active{transform:translateY(-1px) scale(.98)}
.btn-outline{border:1.5px solid var(--border);color:var(--text);background:var(--bg-glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px);box-shadow:0 10px 24px rgba(255,107,107,.14)}
.banner-visual{flex:0 0 320px;display:flex;align-items:center;justify-content:center}
.banner-visual svg{width:100%;max-width:300px;height:auto;filter:drop-shadow(0 16px 30px rgba(255,107,107,.18));animation:floatY 6s ease-in-out infinite}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.banner-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.banner-dots button{width:10px;height:10px;border-radius:50%;background:var(--border);transition:width .35s var(--ease),background .35s var(--ease),box-shadow .35s var(--ease)}
.banner-dots button:hover{background:var(--accent)}
.banner-dots button.active{width:28px;border-radius:6px;background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:0 0 12px var(--brand-glow)}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);z-index:5;color:var(--text);transition:background .28s var(--ease),color .28s var(--ease),transform .28s var(--ease-spring),box-shadow .28s var(--ease)}
.banner-arrow:hover{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;transform:translateY(-50%) scale(1.12);box-shadow:0 10px 24px var(--brand-glow)}
.banner-arrow.prev{left:16px}
.banner-arrow.next{right:16px}

/* 面包屑 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.88rem;color:var(--text-muted);padding:16px 0}
.breadcrumb a{transition:color .25s var(--ease),transform .25s var(--ease);display:inline-block}
.breadcrumb a:hover{color:var(--brand);transform:translateX(2px)}
.breadcrumb .sep{opacity:.5}

/* 通用区块 */
section{padding:56px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 40px}
.section-head .kicker{color:var(--brand);font-weight:700;font-size:.9rem;letter-spacing:1.4px;text-transform:uppercase;display:inline-block;position:relative}
.section-head .kicker::after{content:"";position:absolute;left:50%;bottom:-6px;width:34px;height:3px;border-radius:3px;transform:translateX(-50%);background:linear-gradient(90deg,var(--brand),var(--accent))}
.section-head h2{font-size:clamp(1.5rem,3vw,2.1rem);margin:16px 0 14px;font-weight:800;letter-spacing:-.02em}
.section-head p{color:var(--text-muted);font-size:1.02rem}
.alt-bg{background:var(--bg-soft);border-radius:var(--radius-lg);position:relative}
.alt-bg::before,.alt-bg::after{content:"";position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.alt-bg::before{top:0}
.alt-bg::after{bottom:0}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:transform .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease),background .35s var(--ease);
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.card:hover{transform:translateY(-6px);border-color:var(--brand);box-shadow:var(--shadow-brand)}
.card:hover::before{transform:scaleX(1)}
.card .icon{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand-light),rgba(255,184,140,.22));display:flex;align-items:center;justify-content:center;margin-bottom:16px;transition:transform .4s var(--ease-spring),box-shadow .35s var(--ease)}
.card:hover .icon{transform:scale(1.1) rotate(-6deg);box-shadow:0 8px 20px var(--brand-glow)}
.card h3{font-size:1.15rem;margin-bottom:10px;font-weight:700}
.card p{color:var(--text-muted);font-size:.95rem}
.card ul{margin-top:12px;display:flex;flex-direction:column;gap:6px}
.card ul li{font-size:.9rem;color:var(--text-muted);padding-left:18px;position:relative;transition:color .25s var(--ease),transform .25s var(--ease)}
.card ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));transition:transform .25s var(--ease)}
.card ul li:hover{color:var(--text);transform:translateX(3px)}
.card ul li:hover::before{transform:scale(1.4)}
.card ul li a{transition:color .25s var(--ease)}
.card ul li a:hover{color:var(--brand)}

/* 数字动画 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats>div{padding:22px 12px;border-radius:var(--radius);background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease)}
.stats>div:hover{transform:translateY(-5px);border-color:var(--brand);box-shadow:var(--shadow-brand)}
.stat-num{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.2;background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{color:var(--text-muted);font-size:.92rem;margin-top:6px}

/* 文章列表 */
.article-list{display:grid;gap:18px}
.article-item{
  display:flex;gap:20px;padding:22px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
  position:relative;overflow:hidden;
}
.article-item::after{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--brand),var(--accent));transform:scaleY(0);transform-origin:top;transition:transform .4s var(--ease)}
.article-item:hover{transform:translateX(6px);border-color:var(--brand);box-shadow:var(--shadow-brand)}
.article-item:hover::after{transform:scaleY(1)}
.article-thumb{flex:0 0 120px;height:90px;border-radius:var(--radius-sm);overflow:hidden;background:linear-gradient(135deg,var(--brand-light),rgba(255,184,140,.2));display:flex;align-items:center;justify-content:center;transition:transform .35s var(--ease-spring)}
.article-item:hover .article-thumb{transform:scale(1.05) rotate(-2deg)}
.article-body{flex:1;min-width:0}
.article-meta{display:flex;gap:14px;font-size:.82rem;color:var(--text-muted);margin-bottom:8px;flex-wrap:wrap}
.article-meta .tag{color:var(--brand);font-weight:700;background:var(--brand-light);padding:2px 10px;border-radius:20px}
.article-body h3{font-size:1.08rem;margin-bottom:8px;font-weight:700;transition:color .25s var(--ease)}
.article-item:hover .article-body h3{color:var(--brand)}
.article-body p{font-size:.92rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{display:inline-block;margin-top:10px;color:var(--brand);font-size:.9rem;font-weight:600;transition:transform .25s var(--ease),letter-spacing .25s var(--ease)}
.read-more:hover{transform:translateX(4px);letter-spacing:.4px}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease)}
.faq-item:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.faq-item.open{border-color:var(--brand);box-shadow:var(--shadow-brand);background:linear-gradient(180deg,var(--card),var(--bg-soft))}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;text-align:left;font-size:1rem;font-weight:600;transition:color .25s var(--ease),padding-left .25s var(--ease)}
.faq-q:hover{color:var(--brand);padding-left:26px}
.faq-q .plus{flex-shrink:0;width:24px;height:24px;position:relative;transition:transform .35s var(--ease-spring)}
.faq-item:hover .plus{transform:rotate(90deg)}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:2px;transition:transform .35s var(--ease),opacity .35s var(--ease)}
.faq-q .plus::before{width:14px;height:2px;top:11px;left:5px}
.faq-q .plus::after{width:2px;height:14px;top:5px;left:11px}
.faq-item.open .plus::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-q{color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a-inner{padding:0 22px 20px;color:var(--text-muted);font-size:.95rem;line-height:1.85}

/* HowTo 步骤 */
.howto-steps{display:flex;flex-direction:column;gap:0;max-width:860px;margin:0 auto}
.step{display:flex;gap:20px;position:relative;padding-bottom:28px;transition:transform .3s var(--ease)}
.step:hover{transform:translateX(5px)}
.step:not(:last-child)::before{content:"";position:absolute;left:19px;top:44px;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand),var(--border));opacity:.5}
.step-num{flex-shrink:0;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;z-index:1;box-shadow:0 6px 16px var(--brand-glow);transition:transform .35s var(--ease-spring),box-shadow .35s var(--ease)}
.step:hover .step-num{transform:scale(1.12);box-shadow:0 10px 24px var(--brand-glow)}
.step-body h3{font-size:1.05rem;margin-bottom:6px;transition:color .25s var(--ease)}
.step:hover .step-body h3{color:var(--brand)}
.step-body p{color:var(--text-muted);font-size:.94rem}

/* 团队/作者 */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.team-card{text-align:center;padding:30px 20px}
.avatar{width:88px;height:88px;border-radius:50%;margin:0 auto 16px;overflow:hidden;background:linear-gradient(135deg,var(--brand-light),rgba(255,184,140,.25));display:flex;align-items:center;justify-content:center;transition:transform .4s var(--ease-spring),box-shadow .4s var(--ease);border:2px solid transparent}
.team-card:hover .avatar{transform:scale(1.08) rotate(5deg);box-shadow:0 12px 28px var(--brand-glow);border-color:var(--brand)}
.team-card h3{font-size:1.05rem;margin-bottom:4px}
.team-card .role{color:var(--brand);font-size:.85rem;font-weight:600;margin-bottom:10px}
.team-card p{font-size:.88rem;color:var(--text-muted)}

/* 新闻 */
.news-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--border);transition:transform .3s var(--ease),padding-left .3s var(--ease)}
.news-item:hover{transform:translateX(6px);padding-left:6px}
.news-item:last-child{border-bottom:none}
.news-date{flex-shrink:0;width:64px;text-align:center}
.news-date .d{font-size:1.4rem;font-weight:800;line-height:1;background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.news-date .m{font-size:.78rem;color:var(--text-muted)}
.news-body h3{font-size:1rem;margin-bottom:4px;transition:color .25s var(--ease)}
.news-item:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:.88rem;color:var(--text-muted)}

/* 联系信息 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:18px}
.contact-row{display:flex;gap:14px;align-items:flex-start;padding:16px;border-radius:var(--radius-sm);background:var(--card);border:1px solid var(--border);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease)}
.contact-row:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-brand)}
.contact-row .ci{flex-shrink:0;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--brand-light),rgba(255,184,140,.22));display:flex;align-items:center;justify-content:center;transition:transform .35s var(--ease-spring)}
.contact-row:hover .ci{transform:scale(1.1) rotate(-6deg)}
.contact-row h4{font-size:.95rem;margin-bottom:2px}
.contact-row p{font-size:.9rem;color:var(--text-muted)}
.contact-form{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.88rem;margin-bottom:6px;font-weight:600}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--border);
  background:var(--bg-soft);color:var(--text);font-size:.92rem;outline:none;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.form-group textarea{resize:vertical;min-height:100px}
.form-group input:hover,.form-group textarea:hover,.form-group select:hover{border-color:var(--accent)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--brand);background:var(--bg);box-shadow:0 0 0 4px var(--brand-light)}

/* 页脚 */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--border);padding:48px 0 24px;margin-top:40px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--accent),var(--accent-2))}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:14px;max-width:320px}
.footer-col h4{font-size:.95rem;margin-bottom:16px;font-weight:700}
.footer-col a{display:block;color:var(--text-muted);font-size:.88rem;padding:5px 0;transition:color .25s var(--ease),padding-left .25s var(--ease),transform .25s var(--ease)}
.footer-col a:hover{color:var(--brand);padding-left:6px;transform:translateX(2px)}
.footer-bottom{border-top:1px solid var(--border);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.82rem;color:var(--text-muted)}
.footer-bottom a{color:var(--text-muted);transition:color .25s var(--ease)}
.footer-bottom a:hover{color:var(--brand)}

/* 返回顶部 */
#back-to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px var(--brand-glow);
  opacity:0;visibility:hidden;transform:translateY(16px) scale(.9);
  transition:opacity .35s var(--ease),visibility .35s var(--ease),transform .35s var(--ease-spring),box-shadow .3s var(--ease);
  z-index:900;
}
#back-to-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
#back-to-top:hover{transform:translateY(-5px) scale(1.06);box-shadow:0 14px 32px var(--brand-glow)}
#back-to-top:active{transform:translateY(-2px) scale(.96)}

/* 滚动动画 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}

/* 响应式 */
@media (max-width:1080px){
  .nav-links a{padding:8px 10px;font-size:.9rem}
  .search-box input{width:150px}
  .search-box input:focus{width:190px}
}
@media (max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .banner-visual{display:none}
  .banner-slide{padding:40px 28px}
  .nav-links{display:none}
  .mobile-menu-btn{display:flex}
  .search-box{display:none}
  .contact-grid{grid-template-columns:1fr}
  section{padding:48px 0}
}
@media (max-width:640px){
  body{font-size:15px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .article-item{flex-direction:column}
  .article-thumb{width:100%;height:120px;flex:none}
  .banner-slide{padding:32px 20px;min-height:auto}
  .banner-arrow{display:none}
  .banner{border-radius:var(--radius);margin:20px 0}
  .section-head{margin-bottom:30px}
  .card{padding:22px}
  .contact-form{padding:22px}
  #back-to-top{right:16px;bottom:16px;width:44px;height:44px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:400px){
  .container{padding:0 16px}
  .stats{grid-template-columns:1fr}
  .btn{padding:11px 22px;font-size:.9rem}
}

/* 减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* 打印 */
@media print{
  .site-header,.mobile-menu,#back-to-top,#reading-progress,.banner-arrow,.banner-dots{display:none!important}
  body{background:#fff;color:#000}
  .card,.article-item,.faq-item{box-shadow:none;border-color:#ccc}
}