/* roulang page: index */
:root{
  --c-brand:#1f6fd0;
  --c-gold:#d98b21;
  --c-bg:#f4f7fb;
  --c-ink:#14243a;
  --c-mute:#5c6d84;
  --c-line:#dbe5f1;
  --r-box:16px;
  --sh-soft:0 10px 28px rgba(20,45,80,.08);
  --sp-unit:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--c-ink);font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
button,input{font:inherit}
.ipbcudq-wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}

/* 顶栏 */
.ipbcudq-top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line)}
.ipbcudq-bar{display:flex;align-items:center;gap:20px;min-height:70px}
.ipbcudq-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:.5px;flex:0 0 auto;min-height:44px}
.ipbcudq-logo-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--c-brand),#4a97e8);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;box-shadow:0 6px 14px rgba(31,111,208,.28)}
.ipbcudq-nav{display:flex;align-items:center;gap:2px;overflow-x:auto;margin-left:auto;scrollbar-width:none}
.ipbcudq-nav::-webkit-scrollbar{display:none}
.ipbcudq-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--c-mute);white-space:nowrap;transition:background .2s,color .2s}
.ipbcudq-nav a:hover{background:#eaf2fc;color:var(--c-brand)}
.ipbcudq-nav a:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px}

/* 首屏 */
.ipbcudq-hero{position:relative;overflow:hidden;background:#0d2b4d;color:#fff}
.ipbcudq-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62}
.ipbcudq-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(9,32,60,.92) 0%,rgba(12,44,82,.78) 46%,rgba(12,44,82,.35) 100%)}
.ipbcudq-hero-in{position:relative;z-index:2;padding:84px 0 76px;max-width:720px}
.ipbcudq-kicker{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.32);font-size:13px;letter-spacing:1px;margin-bottom:20px}
.ipbcudq-h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:1px}
.ipbcudq-h1 em{font-style:normal;color:#ffd27a}
.ipbcudq-sub{margin-top:14px;font-size:19px;color:#dbe8f8;font-weight:500}
.ipbcudq-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:#cfdff2;max-width:640px}
.ipbcudq-acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.ipbcudq-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 26px;border-radius:999px;background:var(--c-brand);color:#fff;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .22s,transform .22s,box-shadow .22s}
.ipbcudq-btn:hover{background:#1558a8;transform:translateY(-2px);box-shadow:0 12px 24px rgba(31,111,208,.3)}
.ipbcudq-btn:focus-visible{outline:2px solid #ffd27a;outline-offset:3px}
.ipbcudq-btn--ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55);color:#fff}
.ipbcudq-btn--ghost:hover{background:rgba(255,255,255,.22);box-shadow:none}
.ipbcudq-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.ipbcudq-hero-tags span{padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);font-size:13.5px;color:#e7f0fb}

/* 板块骨架 */
.ipbcudq-sec{padding:66px 0;border-top:1px solid #eef3f9}
.ipbcudq-sec--tint{background:var(--c-bg)}
.ipbcudq-head{max-width:760px;margin-bottom:34px}
.ipbcudq-eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--c-gold);font-weight:700;margin-bottom:10px}
.ipbcudq-h2{font-size:30px;line-height:1.35;font-weight:800;letter-spacing:.5px}
.ipbcudq-desc{margin-top:14px;color:var(--c-mute);font-size:15.5px;line-height:1.85}

/* 三要素 */
.ipbcudq-grid{display:grid;gap:var(--sp-unit)}
.ipbcudq-grid--3{grid-template-columns:repeat(3,1fr)}
.ipbcudq-grid--2{grid-template-columns:repeat(2,1fr)}
.ipbcudq-feat{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-box);padding:28px 26px;box-shadow:var(--sh-soft);transition:transform .25s,box-shadow .25s}
.ipbcudq-feat:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,45,80,.12)}
.ipbcudq-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:#eaf2fc;color:var(--c-brand);font-weight:800;font-size:15px;margin-bottom:14px}
.ipbcudq-feat h3{font-size:18px;font-weight:700;margin-bottom:8px}
.ipbcudq-feat p{color:var(--c-mute);font-size:14.5px;line-height:1.8}

/* 口味分类 */
.ipbcudq-chips{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ipbcudq-chip{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:22px 20px;transition:border-color .2s,transform .2s}
.ipbcudq-chip:hover{border-color:#b9d3f1;transform:translateY(-3px)}
.ipbcudq-chip strong{display:block;font-size:16px;font-weight:700;margin-bottom:6px;color:#17375e}
.ipbcudq-chip span{display:block;font-size:14px;line-height:1.75;color:var(--c-mute)}

/* 产品卡 */
.ipbcudq-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.ipbcudq-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-box);box-shadow:var(--sh-soft);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.ipbcudq-card:hover{transform:translateY(-5px);box-shadow:0 18px 38px rgba(20,45,80,.14)}
.ipbcudq-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#e9eff7}
.ipbcudq-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.ipbcudq-card:hover .ipbcudq-thumb img{transform:scale(1.05)}
.ipbcudq-badge{position:absolute;top:12px;left:12px;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--c-gold);font-size:12.5px;font-weight:700;letter-spacing:.4px}
.ipbcudq-card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.ipbcudq-name{font-size:17px;font-weight:700}
.ipbcudq-text{font-size:14.5px;color:var(--c-mute);line-height:1.78}
.ipbcudq-tag{align-self:flex-start;margin-top:auto;padding:5px 12px;border-radius:8px;background:#eaf2fc;color:#1b5aa8;font-size:12.5px;font-weight:600}

/* 参数表 */
.ipbcudq-tb-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-box);box-shadow:var(--sh-soft);background:#fff;border:1px solid var(--c-line)}
.ipbcudq-table{width:100%;border-collapse:collapse;min-width:660px}
.ipbcudq-table th{background:#eaf2fc;color:#17375e;text-align:left;padding:15px 18px;font-size:14px;font-weight:700;white-space:nowrap}
.ipbcudq-table td{padding:15px 18px;border-top:1px solid var(--c-line);font-size:14.5px;color:var(--c-mute);line-height:1.7}
.ipbcudq-table td:first-child{color:#17375e;font-weight:600}

/* 场景 */
.ipbcudq-scene{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.ipbcudq-scene article{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-box);overflow:hidden;box-shadow:var(--sh-soft)}
.ipbcudq-scene .ipbcudq-thumb{aspect-ratio:16/10}
.ipbcudq-scene h3{margin:18px 20px 8px;font-size:17px;font-weight:700}
.ipbcudq-scene p{margin:0 20px 22px;font-size:14.5px;color:var(--c-mute);line-height:1.8}

/* 工序 */
.ipbcudq-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.ipbcudq-step{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:22px 18px;box-shadow:var(--sh-soft)}
.ipbcudq-step b{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--c-brand);color:#fff;font-size:14px;margin-bottom:12px}
.ipbcudq-step h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.ipbcudq-step p{font-size:13.5px;color:var(--c-mute);line-height:1.72}

/* 评价 */
.ipbcudq-quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ipbcudq-quote{background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-gold);border-radius:12px;padding:24px 24px 20px;box-shadow:var(--sh-soft)}
.ipbcudq-quote p{font-size:15px;color:#2a3f5c;line-height:1.8}
.ipbcudq-quote cite{display:block;margin-top:14px;font-style:normal;font-size:13.5px;color:var(--c-mute);font-weight:600}

/* 资讯 */
.ipbcudq-news{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-box);box-shadow:var(--sh-soft);overflow:hidden}
.ipbcudq-news li{display:flex;align-items:center;gap:16px;padding:18px 24px;border-bottom:1px solid var(--c-line);transition:background .2s}
.ipbcudq-news li:last-child{border-bottom:0}
.ipbcudq-news li:hover{background:#f6faff}
.ipbcudq-news .t{flex:1;font-size:15.5px;color:#20344f;font-weight:500}
.ipbcudq-news .d{flex:0 0 auto;font-size:13px;color:var(--c-gold);font-weight:600}

/* 问答 */
.ipbcudq-faq details{background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:0 20px;margin-bottom:14px;box-shadow:var(--sh-soft)}
.ipbcudq-faq summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:#17375e}
.ipbcudq-faq summary::-webkit-details-marker{display:none}
.ipbcudq-faq summary::after{content:"+";color:var(--c-brand);font-size:22px;font-weight:700;line-height:1}
.ipbcudq-faq details[open] summary::after{content:"–"}
.ipbcudq-faq summary:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:8px}
.ipbcudq-faq .a{padding:0 0 20px;color:var(--c-mute);font-size:14.8px;line-height:1.85;max-width:860px}

/* 合作 */
.ipbcudq-partners{display:flex;flex-wrap:wrap;gap:14px}
.ipbcudq-partners span{display:inline-flex;align-items:center;min-height:52px;padding:0 24px;background:#fff;border:1px solid var(--c-line);border-radius:12px;font-size:15px;font-weight:600;color:#33506f;box-shadow:var(--sh-soft)}

/* 收口 */
.ipbcudq-cta{position:relative;overflow:hidden;color:#fff;background:#0e2b4c}
.ipbcudq-cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4}
.ipbcudq-cta::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,34,62,.94),rgba(10,34,62,.6))}
.ipbcudq-cta-in{position:relative;z-index:2;padding:66px 0}
.ipbcudq-cta h2{font-size:28px;font-weight:800;letter-spacing:.5px}
.ipbcudq-cta p{margin-top:14px;max-width:640px;color:#cfdff2;font-size:15px;line-height:1.85}
.ipbcudq-form{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;max-width:720px}
.ipbcudq-form input{flex:1 1 260px;min-height:48px;padding:0 20px;border-radius:999px;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.94);color:#14243a;font-size:15px}
.ipbcudq-form input:focus{outline:2px solid #ffd27a;outline-offset:2px}
.ipbcudq-form .ipbcudq-btn{background:#ffd27a;color:#123055}
.ipbcudq-form .ipbcudq-btn:hover{background:#ffc94f;color:#0d2440}

/* 页脚 */
.ipbcudq-foot{background:#0f2540;color:#b9cbdf;padding:56px 0 26px}
.ipbcudq-foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.ipbcudq-foot h4{color:#fff;font-size:15px;font-weight:700;margin:0 0 14px}
.ipbcudq-foot p{font-size:14px;line-height:1.85;color:#a7bcd3;max-width:280px}
.ipbcudq-foot li{margin-bottom:4px}
.ipbcudq-foot li a{display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:#b9cbdf;transition:color .2s}
.ipbcudq-foot li a:hover{color:#fff}
.ipbcudq-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;margin-bottom:14px}
.ipbcudq-brand i{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--c-brand),#4a97e8);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:14px;font-weight:700}
.ipbcudq-copy{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#8ea6c0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

@media (max-width:1024px){
  .ipbcudq-h1{font-size:36px}
  .ipbcudq-hero-in{padding:68px 0 62px}
  .ipbcudq-grid--3,.ipbcudq-cards,.ipbcudq-scene,.ipbcudq-chips{grid-template-columns:repeat(2,1fr)}
  .ipbcudq-steps{grid-template-columns:repeat(3,1fr)}
  .ipbcudq-foot-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .ipbcudq-sec{padding:56px 0}
}
@media (max-width:768px){
  .ipbcudq-bar{min-height:62px;gap:12px}
  .ipbcudq-nav a{padding:0 12px;font-size:14.5px}
  .ipbcudq-h1{font-size:30px}
  .ipbcudq-sub{font-size:17px}
  .ipbcudq-lead{font-size:14.8px}
  .ipbcudq-h2{font-size:24px}
  .ipbcudq-quotes{grid-template-columns:1fr}
  .ipbcudq-steps{grid-template-columns:repeat(2,1fr)}
  .ipbcudq-cta h2{font-size:23px}
}
@media (max-width:520px){
  .ipbcudq-wrap{padding:0 16px}
  .ipbcudq-logo{font-size:17px}
  .ipbcudq-h1{font-size:26px}
  .ipbcudq-hero-in{padding:56px 0 50px}
  .ipbcudq-acts{flex-direction:column;align-items:stretch}
  .ipbcudq-btn{width:100%}
  .ipbcudq-grid--3,.ipbcudq-grid--2,.ipbcudq-cards,.ipbcudq-scene,.ipbcudq-chips,.ipbcudq-steps{grid-template-columns:1fr}
  .ipbcudq-sec{padding:44px 0}
  .ipbcudq-head{margin-bottom:26px}
  .ipbcudq-news li{flex-direction:column;align-items:flex-start;gap:6px;padding:16px 18px}
  .ipbcudq-foot-grid{grid-template-columns:1fr}
  .ipbcudq-form{flex-direction:column}
  .ipbcudq-form input,.ipbcudq-form .ipbcudq-btn{width:100%}
}