/* =========================================================
 * KHB · AI Growth Group — 组件库
 * 卡片 / 按钮 / 徽标 / 数据条 / 生态图 / 三层架构卡
 * =======================================================*/

/* ========== 按钮 ========== */
.btn{
    display:inline-flex;align-items:center;gap:.5rem;
    padding:.9rem 1.75rem;border-radius:var(--radius-sm);
    font-size:.9rem;font-weight:500;letter-spacing:1px;
    transition:all var(--dur-sm) var(--ease);
    border:1px solid transparent;cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange);box-shadow:0 4px 18px var(--orange-glow)}
.btn-primary:hover{background:var(--orange-hover);transform:translateY(-2px);box-shadow:0 10px 32px var(--orange-glow)}
.btn-ghost{background:transparent;color:var(--text-strong);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn-lg{padding:1.1rem 2.25rem;font-size:.95rem}
.btn-sm{padding:.55rem 1rem;font-size:.78rem}

/* ========== 徽标 tag / pill ========== */
.tag{
    display:inline-flex;align-items:center;gap:.4rem;
    padding:.25rem .75rem;border-radius:999px;
    font-size:.7rem;letter-spacing:1.5px;
    background:var(--orange-dim);color:var(--orange);
    border:1px solid var(--orange-border);
}
.tag.amber{background:var(--amber-dim);color:var(--amber);border-color:rgba(255,184,0,.28)}
.tag.green{background:var(--green-dim);color:var(--green);border-color:var(--green-border)}
.tag.blue{background:var(--blue-dim);color:var(--blue);border-color:var(--blue-border)}
.tag.gray{background:var(--surface-2);color:var(--muted-strong);border-color:var(--border)}

/* ========== 通用卡片 ========== */
.card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:2rem;
    transition:all var(--dur-md) var(--ease);position:relative;overflow:hidden;
}
.card:hover{border-color:var(--orange-border);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card-accent{
    background:linear-gradient(145deg,rgba(255,85,0,.08),var(--surface) 60%);
    border-color:var(--orange-border);
}
.card-icon{
    width:48px;height:48px;border-radius:var(--radius-md);
    background:var(--orange-dim);display:flex;align-items:center;justify-content:center;
    font-size:1.4rem;margin-bottom:1.25rem;border:1px solid var(--orange-border);
}
.card-title{font-size:1.1rem;font-weight:500;color:var(--text-strong);margin-bottom:.6rem;letter-spacing:1px}
.card-desc{font-size:.88rem;color:var(--muted);line-height:1.85}
.card-meta{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:1.25rem}
.card-meta span{font-size:.68rem;padding:.2rem .6rem;background:var(--surface-2);color:var(--muted-strong);border-radius:4px;border:1px solid var(--border)}
.card-num{
    position:absolute;top:1.5rem;right:1.5rem;
    font-family:'Sora',monospace;font-size:2.4rem;font-weight:300;
    color:transparent;-webkit-text-stroke:1px var(--border-strong);letter-spacing:-2px;line-height:1;
}

/* ========== 三层架构大卡（获客/成交/基础设施）========== */
.arch-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;
    align-items:stretch;
}
.arch-card{
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-xl);padding:2.5rem 2rem;
    position:relative;transition:all var(--dur-md) var(--ease);
    overflow:hidden;display:flex;flex-direction:column;min-height:420px;
}
.arch-card::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(circle at 100% 0%,var(--dot-color,var(--orange-glow)) 0%,transparent 50%);
    opacity:.5;pointer-events:none;
}
.arch-card:hover{transform:translateY(-6px);border-color:var(--orange-border);box-shadow:var(--shadow-md)}
.arch-card .arch-level{
    font-size:.7rem;letter-spacing:3px;color:var(--orange);margin-bottom:1rem;font-weight:400;
}
.arch-card .arch-name{
    font-size:1.6rem;font-weight:500;color:var(--text-strong);margin-bottom:.75rem;letter-spacing:2px;
}
.arch-card .arch-tagline{
    font-size:1rem;color:var(--muted);line-height:1.8;margin-bottom:1.75rem;border-bottom:1px solid var(--border);padding-bottom:1.75rem;
}
.arch-card .arch-features{list-style:none;margin-bottom:1.75rem;flex:1}
.arch-card .arch-features li{
    font-size:.88rem;color:var(--muted-strong);padding:.4rem 0;padding-left:1.4rem;position:relative;
}
.arch-card .arch-features li::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:6px;height:6px;border-radius:50%;background:var(--orange);
}
.arch-card .arch-cta{
    display:inline-flex;align-items:center;gap:.4rem;font-size:.85rem;color:var(--orange);font-weight:500;
    transition:gap var(--dur-sm);
}
.arch-card .arch-cta:hover{gap:.75rem}
.arch-card .arch-visual{
    position:absolute;top:1.5rem;right:1.5rem;width:72px;height:72px;
    border-radius:18px;display:flex;align-items:center;justify-content:center;
    background:var(--orange-dim);border:1px solid var(--orange-border);
    font-size:1.8rem;color:var(--orange);
}
.arch-card.level-2{--dot-color:rgba(255,184,0,.18)}
.arch-card.level-2 .arch-level,.arch-card.level-2 .arch-cta{color:var(--amber)}
.arch-card.level-2 .arch-features li::before{background:var(--amber)}
.arch-card.level-2 .arch-visual{background:rgba(255,184,0,.08);border-color:rgba(255,184,0,.28);color:var(--amber)}
.arch-card.level-3{--dot-color:rgba(59,130,246,.18)}
.arch-card.level-3 .arch-level,.arch-card.level-3 .arch-cta{color:var(--blue)}
.arch-card.level-3 .arch-features li::before{background:var(--blue)}
.arch-card.level-3 .arch-visual{background:var(--blue-dim);border-color:var(--blue-border);color:var(--blue)}

@media (max-width:960px){
    .arch-grid{grid-template-columns:1fr;gap:1.25rem}
    .arch-card{min-height:auto;padding:2rem 1.5rem}
}

/* ========== 数据条（信用数字 / Key metrics）========== */
.metric-row{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;
    background:var(--surface);border:1px solid var(--border);
    border-radius:var(--radius-lg);padding:2.5rem 2rem;
    margin-top:2.5rem;
}
.metric-item{text-align:center;padding:0 .5rem;border-right:1px solid var(--border)}
.metric-item:last-child{border-right:0}

/* ========== Hero 内的指标条（轻量）========== */
.metric-strip{
    display:flex;justify-content:center;align-items:stretch;
    gap:0;margin-top:3rem;padding:0;
}
.metric-strip .metric-item{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:.4rem;padding:1rem 2rem;min-width:140px;
}
.metric-strip .metric-item strong{
    font-family:'Sora',sans-serif;font-size:1.6rem;font-weight:700;
    color:var(--orange);line-height:1;letter-spacing:-.5px;
}
.metric-strip .metric-item span{
    font-size:.82rem;color:var(--muted-strong);letter-spacing:1px;line-height:1.3;
}
.metric-val{
    font-family:'Sora',sans-serif;font-size:2.4rem;font-weight:600;color:var(--orange);
    letter-spacing:-.5px;line-height:1;margin-bottom:.4rem;
}
.metric-val small{font-size:1.1rem;margin-left:.15rem;color:var(--muted-strong);font-weight:400}
.metric-label{font-size:.82rem;color:var(--muted);letter-spacing:1px}
@media (max-width:720px){
    .metric-row{grid-template-columns:repeat(2,1fr);gap:1.5rem 0;padding:2rem 1rem}
    .metric-item{border-right:0;border-bottom:1px solid var(--border);padding-bottom:1.25rem}
    .metric-item:nth-last-child(-n+2){border-bottom:0;padding-bottom:0}
    .metric-val{font-size:2rem}
    .metric-strip{flex-wrap:wrap;gap:1rem 0}
    .metric-strip .metric-item{min-width:50%;border-right:0;padding:.75rem 1rem}
    .metric-strip .metric-item:nth-child(odd){border-right:1px solid var(--border)}
}

/* ========== HERO 区（首页顶部）========== */
.hero{
    position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
    padding:10rem 0 6rem;overflow:hidden;
}
.hero::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
    background-size:80px 80px;opacity:.4;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);
}
.hero::after{
    content:"";position:absolute;top:10%;left:50%;transform:translateX(-50%);
    width:min(900px,80vw);height:min(500px,50vh);
    background:radial-gradient(circle,var(--orange-glow) 0%,transparent 60%);
    opacity:.6;pointer-events:none;z-index:0;
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto}
.hero-tag{
    display:inline-flex;align-items:center;gap:.6rem;
    padding:.45rem 1.25rem;background:var(--orange-dim);
    border:1px solid var(--orange-border);border-radius:999px;
    font-size:.75rem;letter-spacing:2.5px;color:var(--orange);
    margin-bottom:2rem;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--orange);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero-title{
    font-size:clamp(2.4rem,6vw,4.5rem);font-weight:300;line-height:1.15;
    margin-bottom:1.5rem;color:var(--text-strong);letter-spacing:-.5px;
}
.hero-title em{font-style:normal;color:var(--orange);font-weight:500}
.hero-subtitle{
    font-size:clamp(1rem,1.8vw,1.2rem);color:var(--muted);
    max-width:700px;margin:0 auto 2.5rem;line-height:1.9;font-weight:300;
}
.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:3rem}
.hero-models{
    display:flex;gap:.6rem;flex-wrap:wrap;justify-content:center;
    max-width:700px;margin:0 auto;
}
.hero-models span{
    padding:.45rem 1rem;border:1px solid var(--border);border-radius:999px;
    font-size:.78rem;color:var(--muted-strong);background:var(--surface);
    transition:all var(--dur-sm);letter-spacing:1px;
}
.hero-models span:hover{border-color:var(--orange-border);color:var(--orange)}

/* ========== AI Visibility Score 模块 ========== */
.score-wrap{
    background:linear-gradient(145deg,rgba(255,85,0,.06),var(--surface) 50%);
    border:1px solid var(--orange-border);border-radius:var(--radius-xl);
    padding:3rem;display:grid;grid-template-columns:1.1fr 1fr;gap:3rem;align-items:center;
}
.score-form .form-label{font-size:.85rem;color:var(--muted);margin-bottom:.5rem;display:block;letter-spacing:1px}
.score-form .form-input{
    width:100%;padding:1rem 1.25rem;background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-md);color:var(--text-strong);font-size:.95rem;
    transition:border-color var(--dur-sm);font-family:inherit;
}
.score-form .form-input:focus{outline:none;border-color:var(--orange)}
.score-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
.score-form textarea.form-input{min-height:80px;resize:vertical}
.score-result{
    background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:2rem;text-align:center;min-height:280px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.score-result .score-circle{
    width:140px;height:140px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    background:conic-gradient(var(--orange) calc(var(--score,0) * 1%),var(--border) 0);
    margin-bottom:1.25rem;position:relative;transition:background 1s var(--ease);
}
.score-result .score-circle::before{
    content:"";position:absolute;inset:8px;background:var(--bg);border-radius:50%;
}
.score-result .score-circle .score-num{
    position:relative;z-index:2;font-family:'Sora',sans-serif;font-size:2.8rem;font-weight:600;color:var(--orange);
}
.score-result .score-circle .score-num small{font-size:1rem;color:var(--muted);font-weight:400}
.score-result .score-label{font-size:1.05rem;color:var(--text-strong);margin-bottom:.4rem;font-weight:500}
.score-result .score-note{font-size:.8rem;color:var(--muted);max-width:260px;line-height:1.7}
.score-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem;margin-top:1.5rem}
.score-metric{background:var(--surface-2);padding:.75rem;border-radius:var(--radius-sm);text-align:center;border:1px solid var(--border)}
.score-metric .m-val{font-family:'Sora',sans-serif;font-size:1.15rem;color:var(--orange);font-weight:500}
.score-metric .m-lab{font-size:.7rem;color:var(--muted);margin-top:.2rem;letter-spacing:1px}

@media (max-width:960px){
    .score-wrap{grid-template-columns:1fr;padding:2rem 1.5rem;gap:2rem}
    .score-form .form-row{grid-template-columns:1fr}
}

/* ========== ROI 计算器 ========== */
.roi-wrap{
    display:grid;grid-template-columns:1fr 1fr;gap:2rem;
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);
    padding:2.5rem;
}
.roi-form-group{margin-bottom:1.5rem}
.roi-form-group label{display:block;font-size:.8rem;color:var(--muted-strong);margin-bottom:.5rem;letter-spacing:1px}
.roi-slider{
    width:100%;-webkit-appearance:none;appearance:none;height:6px;background:var(--surface-2);
    border-radius:999px;outline:none;border:1px solid var(--border);
}
.roi-slider::-webkit-slider-thumb{
    -webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;
    background:var(--orange);cursor:pointer;border:3px solid var(--bg);box-shadow:0 0 0 1px var(--orange);
}
.roi-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--orange);cursor:pointer;border:3px solid var(--bg)}
.roi-val-row{display:flex;justify-content:space-between;align-items:center;margin-top:.4rem}
.roi-val{font-family:'Sora',sans-serif;font-size:1.4rem;color:var(--orange);font-weight:500}
.roi-result{
    background:linear-gradient(145deg,var(--orange-dim),var(--surface-2));
    border:1px solid var(--orange-border);border-radius:var(--radius-md);
    padding:1rem 1.25rem;font-family:'Sora',sans-serif;
}
.roi-result-row{display:flex;flex-direction:column;gap:.75rem;margin-top:1.25rem}
.roi-item{
    background:var(--bg);padding:1rem;border-radius:var(--radius-md);
    border:1px solid var(--border);display:flex;flex-direction:column;gap:.25rem;
}
.roi-label{font-size:.7rem;color:var(--muted);letter-spacing:1px;text-transform:uppercase}
.roi-number{font-size:1.6rem;font-weight:600;color:var(--orange)}
.roi-result-list{list-style:none;margin-top:1rem}
.roi-result-list li{padding:.5rem 0;font-size:.9rem;border-bottom:1px dashed var(--border);display:flex;justify-content:space-between}
.roi-result-list li:last-child{border-bottom:0}

@media (max-width:960px){
    .roi-wrap{grid-template-columns:1fr;padding:1.5rem}
}

/* ========== 生态图（集团架构） ========== */
.eco-grid{
    position:relative;padding:3rem 2rem;border:1px solid var(--border);border-radius:var(--radius-xl);
    background:linear-gradient(180deg,var(--surface) 0%,var(--bg) 100%);
}
.eco-head{text-align:center;margin-bottom:3rem}
.eco-head .tag{margin-bottom:1rem}
.eco-head h3{font-size:1.6rem;font-weight:400;color:var(--text-strong);letter-spacing:2px}
.eco-cols{display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:1.5rem;align-items:stretch}
.eco-col{display:flex;flex-direction:column;gap:1rem}
.eco-col.center{gap:1.5rem}
.eco-box{
    padding:1.5rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
    text-align:center;transition:all var(--dur-sm);
}
.eco-box:hover{border-color:var(--orange-border);transform:translateY(-2px)}
.eco-box .icon{font-size:1.6rem;margin-bottom:.5rem;color:var(--orange)}
.eco-box .name{font-size:.95rem;font-weight:500;color:var(--text-strong);margin-bottom:.3rem;letter-spacing:1px}
.eco-box .desc{font-size:.8rem;color:var(--muted);line-height:1.6}
.eco-box.main{background:linear-gradient(145deg,var(--orange-dim),var(--surface));border-color:var(--orange-border);padding:2rem}
.eco-box.main .icon{color:var(--orange);font-size:2rem}
.eco-box.main .name{font-size:1.35rem;color:var(--text-strong)}
.eco-connector{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.75rem;letter-spacing:2px}
.eco-connector::before,.eco-connector::after{content:"";flex:1;height:1px;background:var(--border)}
.eco-connector::before{margin-right:.75rem}.eco-connector::after{margin-left:.75rem}

@media (max-width:960px){
    .eco-cols{grid-template-columns:1fr}
    .eco-grid{padding:2rem 1rem}
}

/* ========== 案例对比卡 ========== */
.case-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:2rem;transition:all var(--dur-md);
}
.case-card:hover{border-color:var(--orange-border);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.case-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}
.case-badge{
    width:56px;height:56px;border-radius:var(--radius-md);background:var(--orange-dim);border:1px solid var(--orange-border);
    display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--orange);
}
.case-name{font-size:1.1rem;font-weight:500;color:var(--text-strong);letter-spacing:1px}
.case-desc{font-size:.8rem;color:var(--muted);margin-top:.2rem}
.case-compare{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-top:.75rem}
.case-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem 1rem}
.case-item .label{font-size:.65rem;color:var(--muted);letter-spacing:1px;margin-bottom:.25rem}
.case-item .val{font-family:'Sora',sans-serif;font-size:1.1rem;font-weight:500;color:var(--text-strong)}
.case-item.after .val{color:var(--orange)}
.case-summary{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--border);font-size:.85rem;color:var(--muted-strong);line-height:1.8}

/* ========== 行业网格卡 ========== */
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.ind-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:2rem;transition:all var(--dur-md);cursor:pointer;position:relative;overflow:hidden;
}
.ind-card:hover{border-color:var(--orange-border);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.ind-icon{
    width:48px;height:48px;border-radius:var(--radius-sm);
    background:var(--orange-dim);color:var(--orange);
    display:flex;align-items:center;justify-content:center;font-size:1.4rem;
    border:1px solid var(--orange-border);margin-bottom:1.25rem;
}
.ind-name{font-size:1.1rem;font-weight:500;color:var(--text-strong);margin-bottom:.6rem;letter-spacing:1px}
.ind-desc{font-size:.85rem;color:var(--muted);line-height:1.8;margin-bottom:1rem}
.ind-tags{display:flex;gap:.4rem;flex-wrap:wrap}
.ind-tags span{font-size:.65rem;padding:.2rem .6rem;background:var(--surface-2);color:var(--muted-strong);border:1px solid var(--border);border-radius:4px;letter-spacing:1px}
@media (max-width:960px){.ind-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.ind-grid{grid-template-columns:1fr}}

/* ========== 子产品页的 feature 双栏（左文右图/装饰） ========== */
.feature-row{
    display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center;margin-bottom:4rem;
}
.feature-row.reverse .feature-content{order:2}
.feature-content h3{font-size:1.5rem;font-weight:500;color:var(--text-strong);margin-bottom:1rem;letter-spacing:1px}
.feature-content .eyebrow{margin-bottom:1rem;display:block}
.feature-content p{color:var(--muted);line-height:1.9;margin-bottom:1.25rem;font-size:.95rem}
.feature-bullets{list-style:none;margin-top:1rem}
.feature-bullets li{padding:.5rem 0 .5rem 1.5rem;position:relative;font-size:.9rem;color:var(--muted-strong)}
.feature-bullets li::before{content:"";position:absolute;left:0;top:1rem;width:8px;height:8px;border-radius:50%;background:var(--orange)}
.feature-visual{
    min-height:320px;background:linear-gradient(145deg,var(--orange-dim),var(--surface));
    border:1px solid var(--orange-border);border-radius:var(--radius-xl);
    padding:2.5rem;position:relative;overflow:hidden;
}
.feature-visual .fv-label{font-size:.7rem;letter-spacing:3px;color:var(--orange);margin-bottom:1rem;font-weight:500}
.feature-visual .fv-title{font-size:2rem;color:var(--text-strong);font-weight:500;margin-bottom:1.5rem;letter-spacing:2px}
.feature-visual .fv-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.feature-visual .fv-item{
    background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
    padding:1rem;font-size:.85rem;color:var(--muted-strong);
}
.feature-visual .fv-item strong{color:var(--orange);font-size:1.2rem;font-weight:600;font-family:'Sora',sans-serif}
.feature-visual .fv-metric-row{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1rem}
.feature-visual .fv-metric-row span{
    padding:.4rem .85rem;background:var(--bg);border:1px solid var(--border);border-radius:4px;
    font-size:.8rem;color:var(--muted-strong);
}

@media (max-width:960px){
    .feature-row{grid-template-columns:1fr;gap:1.5rem;margin-bottom:3rem}
    .feature-row.reverse .feature-content{order:0}
    .feature-visual{min-height:auto;padding:2rem 1.5rem}
}

/* ========== FAQ ========== */
.faq-grid{max-width:880px;margin:0 auto}
.faq-item{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
    margin-bottom:1rem;overflow:hidden;transition:border-color var(--dur-sm);
}
.faq-item.open{border-color:var(--orange-border)}
.faq-q{
    padding:1.25rem 1.5rem;display:flex;justify-content:space-between;align-items:center;cursor:pointer;
    font-size:.95rem;color:var(--text-strong);font-weight:500;
}
.faq-q::after{content:"+";font-size:1.4rem;color:var(--orange);transition:transform var(--dur-sm);font-weight:300}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{
    padding:0 1.5rem;max-height:0;overflow:hidden;transition:all var(--dur-md) var(--ease);
    color:var(--muted);line-height:1.9;font-size:.9rem;
}
.faq-item.open .faq-a{padding:0 1.5rem 1.5rem;max-height:300px}

/* ========== 价格卡（CPU 页用） ========== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;align-items:stretch}
.price-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);
    padding:2.5rem 2rem;display:flex;flex-direction:column;transition:all var(--dur-md);position:relative;
}
.price-card:hover{transform:translateY(-6px);border-color:var(--orange-border);box-shadow:var(--shadow-md)}
.price-card.featured{background:linear-gradient(180deg,var(--orange-dim),var(--surface));border-color:var(--orange-border);transform:translateY(-12px)}
.price-card.featured:hover{transform:translateY(-18px)}
.price-card.featured::before{
    content:"最受欢迎";position:absolute;top:-12px;left:50%;transform:translateX(-50%);
    background:var(--orange);color:#fff;padding:.25rem 1rem;border-radius:999px;font-size:.7rem;letter-spacing:2px;
}
.price-name{font-size:1.15rem;font-weight:500;color:var(--text-strong);letter-spacing:1px;margin-bottom:.5rem}
.price-sub{font-size:.8rem;color:var(--muted);margin-bottom:1.5rem;line-height:1.6}
.price-amount{font-family:'Sora',sans-serif;font-size:2.2rem;font-weight:600;color:var(--orange);letter-spacing:-.5px;margin-bottom:2rem}
.price-amount small{font-size:.85rem;color:var(--muted);font-weight:400}
.price-features{list-style:none;margin-bottom:2rem;flex:1}
.price-features li{padding:.5rem 0;font-size:.88rem;color:var(--muted-strong);line-height:1.6;position:relative;padding-left:1.5rem}
.price-features li::before{content:"✓";position:absolute;left:0;color:var(--orange);font-weight:700}
.price-card .btn{width:100%;justify-content:center}
@media (max-width:960px){
    .price-grid{grid-template-columns:1fr;gap:1.25rem}
    .price-card.featured{transform:none}
    .price-card.featured:hover{transform:translateY(-4px)}
}

/* ========== CTA banner（底部大 CTA） ========== */
.cta-banner{
    background:linear-gradient(135deg,var(--orange-dim),var(--surface));
    border:1px solid var(--orange-border);border-radius:var(--radius-xl);
    padding:3.5rem 2rem;text-align:center;
}
.cta-banner h3{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:400;color:var(--text-strong);margin-bottom:1rem;letter-spacing:2px}
.cta-banner p{color:var(--muted);max-width:600px;margin:0 auto 2rem;font-size:.95rem;line-height:1.8}
.cta-banner .actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* ========== 产品页 Tab 导航 ========== */
.sub-hero{
    padding:8rem 0 3rem;position:relative;text-align:center;
    background:linear-gradient(180deg,var(--orange-dim),transparent 70%);
}
.sub-hero .eyebrow{justify-content:center;margin-bottom:1.25rem}
.sub-hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:400;color:var(--text-strong);letter-spacing:2px;line-height:1.3;margin-bottom:1rem}
.sub-hero p{font-size:1rem;color:var(--muted);max-width:700px;margin:0 auto;line-height:1.9}

/* ========== 文字对齐工具 ========== */
.text-left{text-align:left}
.text-right{text-align:right}
.text-center{text-align:center}


/* =========================================================
 * contact.html 专用组件 - 联系我们 / 人才招聘
 * =======================================================*/
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-top:2rem}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.contact-channel{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:2rem;transition:all var(--dur-md);position:relative;overflow:hidden;
}
.contact-channel:hover{border-color:var(--orange-border);box-shadow:var(--shadow-md)}
.ch-head{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}
.ch-icon{
    width:54px;height:54px;border-radius:var(--radius-md);
    display:flex;align-items:center;justify-content:center;
    font-size:1.6rem;border:1px solid;flex-shrink:0;
}
.ch-title{font-size:1.15rem;font-weight:500;margin:0 0 .25rem;color:var(--text-strong)}
.ch-sub{font-size:.8rem;color:var(--muted);margin:0}
.ch-desc{font-size:.875rem;color:var(--muted-strong);line-height:1.7;margin:1rem 0}
.ch-list{list-style:none;padding:0;margin:0 0 1.5rem;font-size:.85rem;color:var(--muted-strong)}
.ch-list li{padding:.35rem 0;display:flex;gap:.5rem}
.ch-list li b{color:var(--text-strong);font-weight:500;min-width:4.5em;flex-shrink:0}
.ch-list li::before{content:"·";color:var(--orange);font-weight:bold;flex-shrink:0}

.ch-form{background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:var(--radius-md);padding:1.5rem}
.form-row{margin-bottom:1rem}
.form-row label{display:flex;flex-direction:column;gap:.4rem;font-size:.8rem;color:var(--muted);font-weight:500}
.form-row input,.form-row select,.form-row textarea{
    background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
    padding:.65rem .85rem;font-size:.9rem;color:var(--text-strong);
    font-family:inherit;transition:all var(--dur-sm);
}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
    outline:none;border-color:var(--orange);background:rgba(255,85,0,.04);
}
.form-row textarea{resize:vertical;min-height:70px}
.ch-form button{width:100%;margin-top:.5rem}
.ch-form-success{
    background:rgba(16,185,129,.08);border:1px solid var(--green-border);
    border-radius:var(--radius-md);padding:1.5rem;
    color:var(--green);font-size:.9rem;text-align:center;line-height:1.7;
}

/* 通用联系方式 */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:2rem}
@media (max-width:860px){.info-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.info-grid{grid-template-columns:1fr}}
.info-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
    padding:1.5rem;text-align:center;transition:all var(--dur-md);
}
.info-card:hover{border-color:var(--orange-border);transform:translateY(-2px)}
.info-icon{font-size:2rem;margin-bottom:.75rem}
.info-card h4{font-size:1rem;font-weight:500;margin:0 0 .5rem;color:var(--text-strong)}
.info-main{font-size:.95rem;color:var(--orange);font-weight:500;margin:0 0 .35rem;word-break:break-all}

/* 联系表单 - contact.html */
.contact-form{max-width:760px;margin:2rem auto 0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.5rem}
.contact-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;margin-bottom:1.25rem}
.contact-form .form-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}
.contact-form .form-group:last-of-type{margin-bottom:0}
.contact-form label{font-size:.85rem;color:var(--text-strong);font-weight:500;display:flex;align-items:center;gap:.25rem}
.contact-form label .req{color:#EF4444}
.contact-form input[type="text"],.contact-form input[type="email"],.contact-form input[type="tel"],.contact-form select,.contact-form textarea{
    width:100%;padding:.75rem 1rem;font-size:.95rem;line-height:1.5;
    background:var(--bg-void);color:var(--text);
    border:1px solid var(--border);border-radius:var(--radius-sm);
    font-family:inherit;transition:border-color var(--dur-sm);
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--orange)}
.contact-form textarea{resize:vertical;min-height:120px}
.contact-form select{cursor:pointer;appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text) 50%),linear-gradient(135deg,var(--text) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:2.5rem}
.contact-form .form-actions{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}
.contact-form .form-actions .form-tip{font-size:.75rem;color:var(--muted);flex:1;min-width:200px}
.contact-form .form-actions .form-tip a{color:var(--orange)}
@media (max-width:640px){
    .contact-form{padding:1.5rem}
    .contact-form .form-row{grid-template-columns:1fr;gap:0}
}

/* 招聘岗位列表 - team.html */
.positions-list{display:flex;flex-direction:column;gap:1rem;margin-top:2rem}
.position-item{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
    padding:1.5rem 2rem;transition:all var(--dur-md);
}
.position-item:hover{border-color:var(--orange-border);transform:translateX(4px)}
.position-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:.75rem;flex-wrap:wrap}
.position-title{font-size:1.15rem;font-weight:600;color:var(--text-strong);margin:0}
.position-tag{
    font-size:.75rem;font-weight:500;color:var(--orange);
    background:var(--orange-dim);border:1px solid var(--orange-border);
    padding:.25rem .75rem;border-radius:999px;white-space:nowrap;
}
.position-desc{color:var(--text);font-size:.9rem;line-height:1.7;margin:0 0 1rem}
.position-meta{display:flex;flex-wrap:wrap;gap:1.25rem;font-size:.8rem;color:var(--muted)}
.position-meta span{position:relative;padding-left:.75rem}
.position-meta span:first-child{padding-left:0}
@media (max-width:640px){
    .position-item{padding:1.25rem}
    .position-head{flex-direction:column;align-items:flex-start}
}
.info-sub{font-size:.75rem;color:var(--muted);margin:0;line-height:1.5}

/* 招聘岗位 */
.careers-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:2rem}
@media (max-width:860px){.careers-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.careers-grid{grid-template-columns:1fr}}
.career-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
    padding:1.5rem;transition:all var(--dur-md);
}
.career-card:hover{border-color:var(--green-border);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.career-tag{
    display:inline-block;font-size:.7rem;color:var(--green);font-weight:500;
    background:var(--green-dim);border:1px solid var(--green-border);
    padding:.2rem .6rem;border-radius:var(--radius-sm);margin-bottom:.85rem;letter-spacing:1px;
}
.career-card h4{font-size:1.05rem;font-weight:500;margin:0 0 .85rem;color:var(--text-strong)}
.career-card ul{list-style:none;padding:0;margin:0;font-size:.8rem;color:var(--muted-strong);line-height:1.8}
.career-card ul li{padding-left:1rem;position:relative}
.career-card ul li::before{content:"·";position:absolute;left:0;color:var(--green);font-weight:bold}
.careers-cta{
    margin-top:2.5rem;text-align:center;padding:2rem;
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
}
.careers-cta p{color:var(--muted-strong);font-size:.95rem;margin:0 0 1.25rem}
.careers-cta b{color:var(--orange)}