/* ============================================================
   首页 index.css · 蓝紫渐变科技风布局
   ============================================================ */

/* ---------- Hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 46px) 0 40px;overflow:hidden;
  background:var(--grad-hero)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none}
.hero::before{width:480px;height:480px;background:rgba(61,90,254,.20);top:-160px;left:-120px;animation:float 9s ease-in-out infinite}
.hero::after{width:420px;height:420px;background:rgba(124,77,255,.18);top:-60px;right:-100px;animation:float 11s ease-in-out infinite reverse}
.hero-orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.42;pointer-events:none}
.hero-orb.cyan{width:300px;height:300px;background:rgba(0,180,255,.25);bottom:-120px;left:32%;animation:float 13s ease-in-out infinite}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:860px;margin:0 auto;padding:0 20px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.75);border:1px solid rgba(61,90,254,.25);backdrop-filter:blur(8px);
  font-size:.83rem;font-weight:600;color:var(--primary);box-shadow:var(--shadow-s)}
.hero-badge .pulse{width:8px;height:8px;border-radius:50%;background:var(--ok);animation:pulse 1.6s infinite}
.hero h1{font-size:clamp(2rem,6vw,3.4rem);font-weight:900;letter-spacing:1px;margin:22px 0 14px;line-height:1.2}
.hero p.sub{font-size:clamp(.95rem,2.2vw,1.15rem);color:var(--ink-2);max-width:640px;margin:0 auto 34px}

/* ---------- 大输入框 ---------- */
.askbox{max-width:760px;margin:0 auto;text-align:left}
.askbox-main{background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-radius:24px;
  border:1.5px solid rgba(61,90,254,.22);box-shadow:0 12px 40px rgba(61,90,254,.14);
  padding:16px 16px 10px;transition:.3s}
.askbox-main:focus-within{border-color:var(--primary);box-shadow:0 16px 48px rgba(61,90,254,.22)}
.askbox textarea{width:100%;border:none;background:transparent;resize:none;font-size:1.02rem;
  line-height:1.65;min-height:66px;max-height:180px;padding:4px 6px}
.askbox textarea::placeholder{color:#A6ACCB}
.askbox-tools{display:flex;align-items:center;gap:8px;padding:8px 4px 2px;flex-wrap:wrap}
.tool-chip{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;
  border:1.4px solid var(--line);background:#fff;font-size:.84rem;font-weight:600;color:var(--ink-2);
  transition:.2s;cursor:pointer;user-select:none}
.tool-chip svg{width:15px;height:15px}
.tool-chip:hover{border-color:var(--primary);color:var(--primary)}
.tool-chip.on{background:rgba(61,90,254,.1);border-color:var(--primary);color:var(--primary)}
.ask-send{width:42px;height:42px;border-radius:14px;background:var(--grad-main);color:#fff;
  display:flex;align-items:center;justify-content:center;margin-left:auto;box-shadow:0 6px 16px rgba(80,70,255,.35);transition:.2s;flex-shrink:0}
.ask-send:hover{transform:translateY(-2px) scale(1.04)}
.ask-send svg{width:19px;height:19px}
.model-pick{position:relative}
.model-menu{position:absolute;bottom:calc(100% + 10px);left:0;background:#fff;border-radius:16px;
  border:1px solid var(--line);box-shadow:var(--shadow-l);min-width:300px;padding:8px;z-index:50;
  opacity:0;transform:translateY(8px);pointer-events:none;transition:.22s}
.model-menu.open{opacity:1;transform:none;pointer-events:auto}
.model-menu .mi{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:11px;cursor:pointer;transition:.15s}
.model-menu .mi:hover{background:var(--bg-soft)}
.model-menu .mi.cur{background:rgba(61,90,254,.08)}
.model-menu .mi .ic{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff}
.model-menu .mi .ic svg{width:17px;height:17px}
.model-menu .mi b{font-size:.9rem;display:block}
.model-menu .mi small{color:var(--ink-3);font-size:.76rem;display:block}
.model-menu .mi .tag{margin-left:auto;flex-shrink:0}
.ask-rec{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.ask-rec button{padding:9px 16px;border-radius:999px;background:rgba(255,255,255,.8);
  border:1px solid var(--line);font-size:.85rem;color:var(--ink-2);transition:.2s;font-weight:500;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ask-rec button:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-s)}

/* ---------- 数据带 ---------- */
.stats-band{max-width:900px;margin:44px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;text-align:center}
@media(max-width:640px){.stats-band{grid-template-columns:repeat(2,1fr);gap:10px}}
.stat-item{padding:16px 8px;border-radius:18px;background:rgba(255,255,255,.66);border:1px solid rgba(231,234,246,.9);backdrop-filter:blur(8px)}
.stat-item b{font-size:clamp(1.3rem,3.4vw,1.9rem);font-weight:900;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.stat-item span{font-size:.8rem;color:var(--ink-3)}

/* ---------- 通用 Section ---------- */
.section{padding:76px 0}
@media(max-width:768px){.section{padding:42px 0}}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head .kicker{display:inline-block;padding:5px 14px;border-radius:999px;background:rgba(61,90,254,.08);
  color:var(--primary);font-size:.8rem;font-weight:700;letter-spacing:2px;margin-bottom:14px}
.sec-head h2{font-size:clamp(1.5rem,4vw,2.2rem);font-weight:900;margin-bottom:12px}
.sec-head p{color:var(--ink-2);font-size:.98rem}

/* ---------- 能力大卡 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.cap-grid{grid-template-columns:1fr}}
.cap-card{border-radius:var(--r-xl);overflow:hidden;position:relative;min-height:300px;
  display:flex;flex-direction:column;justify-content:flex-end;color:#fff;padding:28px;
  box-shadow:var(--shadow-m);transition:.35s cubic-bezier(.22,1,.3,1);cursor:pointer}
.cap-card:hover{transform:translateY(-6px) scale(1.01);box-shadow:var(--shadow-l)}
.cap-card .cap-art{position:absolute;inset:0;opacity:.9}
.cap-card .cap-body{position:relative;z-index:2}
.cap-card h3{font-size:1.3rem;font-weight:800;margin-bottom:8px}
.cap-card p{font-size:.9rem;opacity:.88;line-height:1.7;margin-bottom:16px}
.cap-card .cap-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.9rem}
.cap-art svg{width:100%;height:100%}

/* ---------- 能力矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:1000px){.matrix{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.matrix{grid-template-columns:repeat(2,1fr);gap:11px}}
.mx-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:20px;transition:.3s;cursor:pointer;position:relative;overflow:hidden}
.mx-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(61,90,254,.4)}
.mx-ic{width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;margin-bottom:13px;color:#fff}
.mx-ic svg{width:21px;height:21px}
.mx-card b{display:block;font-size:.98rem;margin-bottom:5px}
.mx-card p{font-size:.8rem;color:var(--ink-3);line-height:1.6;min-height:38px}
.mx-meta{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.mx-meta .tag{font-size:.68rem;padding:2px 8px}
@media(max-width:420px){
  .mx-card{padding:13px 12px;border-radius:14px}
  .mx-ic{width:34px;height:34px;border-radius:10px;margin-bottom:8px}
  .mx-ic svg{width:17px;height:17px}
  .mx-card b{font-size:.85rem;margin-bottom:3px}
  .mx-card p{font-size:.72rem;min-height:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .mx-meta{margin-top:7px;gap:4px}
  .mx-meta .tag{font-size:.62rem;padding:2px 6px}
}

/* ---------- 案例轮播 ---------- */
.cases-band{background:linear-gradient(180deg,#F6F7FB 0%,#EEF1FA 100%)}
.case-scroll{display:flex;gap:18px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;scrollbar-width:none}
.case-scroll::-webkit-scrollbar{display:none}
.case-card{flex:0 0 330px;scroll-snap-align:start;background:#fff;border-radius:var(--r-l);
  border:1px solid var(--line);padding:24px;transition:.3s;cursor:pointer}
@media(max-width:480px){.case-card{flex-basis:82vw}}
.case-card:hover{box-shadow:var(--shadow-m);transform:translateY(-4px)}
.case-logo{width:52px;height:52px;border-radius:15px;color:#fff;font-weight:800;font-size:1.15rem;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:var(--shadow-s)}
.case-card h4{font-size:1.02rem;margin-bottom:3px}
.case-card .role{font-size:.78rem;color:var(--primary);font-weight:700;margin-bottom:10px;display:block}
.case-card p{font-size:.86rem;color:var(--ink-2);line-height:1.7}
.cases-dots{display:flex;gap:7px;justify-content:center;margin-top:6px}
.cases-dots i{width:7px;height:7px;border-radius:99px;background:#C9CFE8;transition:.3s;cursor:pointer}
.cases-dots i.cur{width:22px;background:var(--primary)}

/* ---------- 生态 Tab ---------- */
.eco-tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:30px}
@media(max-width:640px){.eco-tabs{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.eco-tabs::-webkit-scrollbar{display:none}}
.eco-tab{padding:10px 20px;border-radius:999px;background:#fff;border:1.4px solid var(--line);
  font-size:.9rem;font-weight:600;color:var(--ink-2);transition:.25s;white-space:nowrap}
.eco-tab.cur{background:var(--grad-main);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(80,70,255,.3)}
.eco-panel{display:none;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:34px;animation:ecoIn .4s ease}
.eco-panel.show{display:grid}
@media(max-width:820px){.eco-panel{grid-template-columns:1fr;padding:22px}}
@keyframes ecoIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.eco-txt h3{font-size:1.4rem;font-weight:800;margin-bottom:12px}
.eco-txt p{color:var(--ink-2);font-size:.94rem;line-height:1.8;margin-bottom:20px}
.eco-feats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:22px}
@media(max-width:480px){.eco-feats{grid-template-columns:1fr}}
.eco-feats span{display:flex;gap:7px;align-items:center;font-size:.85rem;color:var(--ink-2)}
.eco-feats svg{width:15px;height:15px;color:var(--ok);flex-shrink:0}
.eco-visual{border-radius:var(--r-l);min-height:260px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.eco-visual svg{width:88%;height:auto}

/* ---------- 定价 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:1100px;margin:0 auto}
@media(max-width:1000px){.price-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.price-grid{grid-template-columns:1fr 1fr;gap:11px}}
.price-card{background:#fff;border:1.5px solid var(--line);border-radius:var(--r-xl);padding:28px 24px;
  position:relative;transition:.3s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:rgba(61,90,254,.4)}
.price-card.hot{border-color:var(--primary);box-shadow:0 14px 40px rgba(61,90,254,.18)}
.price-card .hot-tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--grad-main);color:#fff;font-size:.72rem;font-weight:700;padding:4px 14px;border-radius:999px;white-space:nowrap}
.price-card h4{font-size:1.05rem;font-weight:800}
.price-num{margin:14px 0 4px}
.price-num b{font-size:2.1rem;font-weight:900}
.price-num i{font-style:normal;color:var(--ink-3);font-size:.85rem}
.price-num del{color:#B7BCD4;font-size:.9rem;margin-left:8px}
.price-feats{margin:16px 0 22px;flex:1}
.price-feats li{display:flex;gap:8px;align-items:flex-start;font-size:.86rem;color:var(--ink-2);margin-bottom:9px;line-height:1.5}
.price-feats svg{width:15px;height:15px;color:var(--ok);flex-shrink:0;margin-top:3px}
@media(max-width:560px){
  .price-card{padding:16px 13px 14px;border-radius:16px}
  .price-card h4{font-size:.92rem}
  .price-num{margin:9px 0 2px}
  .price-num b{font-size:1.45rem}
  .price-num i{font-size:.72rem}
  .price-num del{font-size:.74rem;margin-left:5px}
  .price-feats{margin:11px 0 14px}
  .price-feats li{font-size:.74rem;margin-bottom:6px;gap:6px}
  .price-feats svg{width:13px;height:13px;margin-top:2px}
  .price-card .btn{width:100%;padding:9px 0;font-size:.85rem}
}

/* ---------- CTA ---------- */
.cta-band{border-radius:var(--r-xl);background:linear-gradient(120deg,#2A3EB1,#5A45F0 55%,#8E5CFF);
  color:#fff;padding:56px 32px;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:rgba(255,255,255,.12);top:-220px;right:-100px;filter:blur(10px)}
.cta-band h2{font-size:clamp(1.5rem,4vw,2.1rem);font-weight:900;margin-bottom:12px;position:relative}
.cta-band p{opacity:.9;margin-bottom:26px;position:relative}
.cta-band .btn{position:relative}

/* ---------- 移动端整页紧凑化（星火式节奏） ---------- */
@media(max-width:640px){
  .hero{padding-bottom:26px}
  .hero h1{margin:16px 0 10px}
  .hero p.sub{margin-bottom:22px}
  .stats-band{margin-top:26px}
  .stat-item{padding:12px 6px;border-radius:14px}
  .stat-item span{font-size:.72rem}
  .ask-rec{margin-top:12px;gap:8px}
  .ask-rec button{padding:7px 13px;font-size:.8rem}
  .eco-panel{padding:16px;border-radius:16px;gap:20px}
  .eco-txt h3{font-size:1.15rem;margin-bottom:8px}
  .eco-txt p{font-size:.84rem;line-height:1.65;margin-bottom:12px}
  .eco-feats{gap:7px;margin-bottom:14px}
  .eco-feats span{font-size:.78rem}
  .eco-visual{min-height:180px}
  .sec-head h2{font-size:1.3rem}
  .sec-head p{font-size:.84rem;margin-bottom:22px}
  .cta-band{padding:30px 18px;border-radius:18px}
  .cta-band h2{font-size:1.25rem}
  .cta-band .btn{display:block;width:100%;margin:8px 0 0!important}
}
@media(max-width:480px){
  .eco-feats{grid-template-columns:1fr 1fr}
}

/* ---------- 能力大卡移动端：渐变底上卡身 + 装饰淡化为纹理 ---------- */
@media(max-width:640px){
  .cap-card{min-height:225px;padding:20px 18px;border-radius:18px}
  .cap-grid .cap-card:nth-child(1){background:linear-gradient(135deg,#3D5AFE,#7C4DFF)}
  .cap-grid .cap-card:nth-child(2){background:linear-gradient(135deg,#0EA5E9,#6366F1)}
  .cap-grid .cap-card:nth-child(3){background:linear-gradient(135deg,#7C4DFF,#EC4899)}
  .cap-card .cap-art{opacity:.22}
  .cap-card h3{text-shadow:0 1px 10px rgba(15,18,48,.35)}
  .cap-card p{text-shadow:0 1px 8px rgba(15,18,48,.3)}
  .cap-card .cap-link{text-shadow:0 1px 6px rgba(15,18,48,.3)}
}