:root{font-family:"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;color:#24272b;background:#f7f8fa}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%}.wrap{max-width:1200px;margin:auto;padding:0 24px}.top{background:#fff;border-bottom:1px solid #e7e8eb;position:sticky;top:0;z-index:10}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:750;white-space:nowrap}.brand img{width:78px;height:52px;object-fit:contain}.navlinks{display:flex;gap:28px;color:#41474f;font-size:15px}.navlinks a:hover,.active{color:#b72f1d!important}.hero{background:#192a35;color:#fff;overflow:hidden}.hero-grid{display:grid;grid-template-columns:.85fr 1.15fr;min-height:535px;align-items:center;gap:40px}.eyebrow{color:#ffba79;font-weight:700;letter-spacing:.18em;font-size:13px}.hero h1{font-size:clamp(38px,5vw,68px);line-height:1.17;letter-spacing:.02em;margin:18px 0}.hero p{font-size:20px;line-height:1.8;color:#e3e8e9;margin:0 0 28px}.hero-photo{height:430px;border-radius:24px;overflow:hidden;background:#fff;box-shadow:0 28px 60px #050f1766}.hero-photo img{width:100%;height:100%;object-fit:cover}.buttons{display:flex;flex-wrap:wrap;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;border-radius:8px;background:#d34224;color:white;font-weight:700}.btn.secondary{background:transparent;border:1px solid #ffffff75}.section{padding:76px 0}.section h2{font-size:32px;line-height:1.35;margin:0 0 12px}.lead{color:#657079;line-height:1.8;margin:0 0 30px}.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.card{background:#fff;border:1px solid #e7e9ed;border-radius:14px;padding:22px;box-shadow:0 10px 30px #17212b08}.card h3{margin:0 0 12px;font-size:20px}.card strong{font-size:32px;color:#a93121}.card small{font-size:16px;color:#657079}.card p{font-size:15px;color:#56616b;line-height:1.6}.card a{color:#b23824;font-weight:700}.blue{background:#eaf0f4}.feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.feature img{width:100%;border-radius:15px}.feature p{color:#53606b;line-height:1.9}.video{width:100%;border-radius:14px;background:#111;max-height:480px}.foot{background:#192a35;color:#d6dfe4;padding:42px 0;line-height:1.9}.foot strong{font-size:19px;color:white}.crumb{color:#68747b;font-size:14px;padding:28px 0}.detail{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}.detail-img{background:#fff;padding:28px;border-radius:18px}.detail-img img{display:block;width:100%}.detail h1{font-size:40px;margin:0 0 12px}.detail .model{font-size:18px;color:#b83a25;font-weight:700}.detail p{line-height:1.8;color:#56616b}.spec{width:100%;border-collapse:collapse;background:#fff;margin:28px 0}.spec td{padding:16px;border-bottom:1px solid #e9ecef}.spec td:first-child{color:#64717b;width:34%}.notice{font-size:14px;color:#69747b;line-height:1.7}.mobile-menu{display:none}@media(max-width:900px){.navlinks{gap:12px;font-size:13px}.brand span{font-size:15px}.grid{grid-template-columns:repeat(3,1fr)}.hero-grid{min-height:auto;padding-top:56px;padding-bottom:56px}.hero-photo{height:330px}}@media(max-width:650px){.wrap{padding:0 18px}.nav{height:66px}.brand img{width:58px;height:43px}.navlinks{display:none;position:absolute;left:0;right:0;top:66px;background:#fff;padding:20px;box-shadow:0 12px 20px #0002;flex-direction:column;font-size:16px}.navlinks.open{display:flex}.mobile-menu{display:block;border:0;background:none;font-size:25px}.hero-grid,.feature,.detail{grid-template-columns:1fr}.hero-grid{gap:30px;padding-top:46px;padding-bottom:36px}.hero h1{font-size:43px}.hero p{font-size:17px}.hero-photo{height:270px}.section{padding:52px 0}.section h2{font-size:26px}.grid{grid-template-columns:repeat(2,1fr)}.card{padding:17px}.card strong{font-size:28px}.detail h1{font-size:32px}.detail-img{padding:12px}}@media(max-width:380px){.grid{grid-template-columns:1fr}}

.social-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.social-card{display:flex;gap:15px;align-items:flex-start;background:white;border:1px solid #e6e9ec;padding:24px 18px;border-radius:14px}.social-card h3{margin:0 0 8px;font-size:20px}.social-card p{margin:0 0 10px;color:#596671;font-size:15px}.social-card small{font-size:14px;color:#8a949b}.social-badge{flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:white;font-size:21px;font-weight:800}.douyin{background:#151a22}.kuaishou{background:#ef7130}.baijia{background:#3269c9}.redbook{background:#d53c40}@media(max-width:900px){.social-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:650px){.social-grid{grid-template-columns:1fr 1fr}.social-card{padding:16px;flex-direction:column}}@media(max-width:380px){.social-grid{grid-template-columns:1fr}.social-card{flex-direction:row}}
.selection-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.selection-list>div{background:#fff;border-radius:14px;padding:24px}.selection-list strong{font-size:19px}.selection-list p,.qa p{line-height:1.8;color:#596670}.qa{max-width:850px}.qa h3{font-size:19px;margin:28px 0 6px}@media(max-width:650px){.selection-list{grid-template-columns:1fr}}

.hero-slogan{font-size:clamp(21px,2.4vw,30px)!important;font-weight:700;color:#fff!important;margin-bottom:10px!important}.hero-intro{font-size:17px!important;color:#d2dde3!important}.culture{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}.culture>div{background:#fff;border:1px solid #e7e9ed;padding:24px;border-radius:14px}.culture span{display:block;color:#b43a26;font-size:14px;font-weight:700;margin-bottom:9px}.culture strong{font-size:22px}.culture p{color:#5d6870;line-height:1.75;margin-bottom:0}@media(max-width:650px){.hero h1{font-size:37px}.culture{grid-template-columns:1fr}}

.brand-gallery{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:36px}.brand-gallery figure{margin:0;background:#fff;border:1px solid #e7e9ed;border-radius:14px;overflow:hidden}.brand-gallery img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover}.brand-gallery figcaption{font-size:14px;color:#596670;padding:14px 18px;line-height:1.6}@media(max-width:650px){.brand-gallery{grid-template-columns:1fr}}

.contact-section{background:#edf2f5}.contact-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:52px;align-items:center}.contact-layout p{color:#56636e;line-height:1.85;max-width:650px}.contact-phone{display:block;font-size:clamp(28px,4vw,42px);font-weight:800;color:#a83220;margin:20px 0}.contact-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:18px 0}.contact-outline{background:#fff;color:#a83220;border:1px solid #cc6b5d}.contact-qr{width:min(100%,260px);justify-self:center;margin:0;text-align:center}.contact-qr img{display:block;width:100%;border-radius:12px;border:1px solid #d8dfe3}.contact-qr figcaption{font-size:15px;color:#52606a;margin-top:10px}@media(max-width:650px){.contact-layout{grid-template-columns:1fr;gap:20px}.contact-qr{width:min(100%,260px);justify-self:start}}

.toutiao{background:#d93b36}.channels{background:#e79c2f}

.footer-note{border-top:1px solid #ffffff29;max-width:1050px;padding-top:16px;margin:20px 0 0;color:#c6d1d7;font-size:14px;line-height:1.7}.footer-note strong{font-size:14px;color:#eef3f5}

.social-card>div{min-width:0;flex:1}.social-qr{display:block;width:100%;margin-top:15px;color:#b23824;font-size:14px;font-weight:700}.social-qr img{display:block;width:100%;height:180px;object-fit:contain;object-position:center;background:#fafafa;border-radius:10px;border:1px solid #e6e9ed}.social-qr span{display:block;margin-top:8px}.social-card{min-height:268px}@media(max-width:650px){.social-qr img{height:140px}}

.social-link{display:inline-block;color:#b23824;font-size:15px;font-weight:700;line-height:1.5;margin-top:8px;overflow-wrap:anywhere}
.news-item{max-width:820px;background:#fff;border:1px solid #e6e9ec;border-radius:14px;padding:28px;margin-top:26px}.news-item time{display:block;color:#687580;font-size:14px;margin-bottom:10px}.news-item h3{font-size:22px;margin:0 0 12px}.news-item p{color:#52606b;line-height:1.8;margin:0}.news-item a{display:inline-block;color:#b23824;font-weight:700;margin-top:14px}.news-item a:focus-visible,.social-qr:focus-visible,.social-link:focus-visible{outline:3px solid #b23824;outline-offset:4px}
.news-feed{max-width:820px;max-height:380px;overflow-y:auto;overscroll-behavior:contain;scroll-snap-type:y proximity;margin-top:22px;padding:2px 10px 2px 2px;scrollbar-gutter:stable}.news-feed .news-item{margin:0 0 14px;scroll-snap-align:start}.news-feed:focus-visible{outline:3px solid #b23824;outline-offset:4px}@media(max-width:650px){.news-feed{max-height:350px}.news-feed .news-item{padding:20px}}
.guide{padding-bottom:74px}.guide article{max-width:850px}.guide h1{font-size:clamp(32px,4vw,48px);line-height:1.25;margin:10px 0 24px}.guide h2{font-size:25px;margin:38px 0 12px}.guide h3{font-size:20px;margin:28px 0 10px}.guide p{line-height:1.85;color:#4f5d67;font-size:17px}.guide article a:not(.btn){color:#a93121;text-decoration:underline;text-underline-offset:3px}.guide-note{border-left:4px solid #bd452b;background:#edf2f5;padding:18px 24px;margin:30px 0;border-radius:0 10px 10px 0}.guide-note p{margin:8px 0 0}.guide-promo{display:flex;justify-content:space-between;align-items:center;gap:28px}.guide-promo p{max-width:680px;line-height:1.8;color:#52606b}.guide-promo .btn{white-space:nowrap}@media(max-width:650px){.guide-promo{display:block}.guide-promo .btn{margin-top:10px}.guide{padding-bottom:50px}}
@media(min-width:651px){.hero h1{font-size:clamp(28px,3.4vw,44px);letter-spacing:0;white-space:nowrap}}@media(max-width:650px){.hero h1{font-size:clamp(25px,7vw,37px);letter-spacing:0;white-space:nowrap}}

/* baijianuan-clickable-cards-20261001 */
.grid > a.card { display:block; color:#24272b; cursor:pointer; transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.grid > a.card:hover { transform:translateY(-4px); border-color:#d7a092; box-shadow:0 16px 32px #17212b20; }
.grid > a.card:focus-visible, .contact-phone:focus-visible { outline:3px solid #d34224; outline-offset:3px; }
.grid > a.card .card-link { display:inline-block; margin-top:4px; color:#b23824; font-weight:700; text-decoration:underline; text-underline-offset:3px; }
.contact-phone { cursor:pointer; text-decoration:underline; text-decoration-thickness:1px; text-underline-offset:6px; }
.contact-phone:hover { color:#d34224; }
@media (prefers-reduced-motion:reduce) { .grid > a.card { transition:none; } .grid > a.card:hover { transform:none; } }
/* baijianuan mobile consultation and social cards */
.mobile-contact-bar{display:none}.desktop-contact-float{position:fixed;right:18px;bottom:22px;z-index:20;display:flex;flex-direction:column;gap:9px}.desktop-contact-float a,.desktop-contact-float button,.mobile-contact-bar a,.mobile-contact-bar button{display:flex;align-items:center;justify-content:center;min-height:48px;padding:10px 18px;border:0;border-radius:10px;background:#b83722;color:#fff;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;box-shadow:0 5px 17px #18273133}.desktop-contact-float a{background:#192a35}.wechat-dialog{position:fixed;max-width:min(92vw,410px);width:100%;border:0;border-radius:16px;padding:24px;background:#fff;color:#26333b;box-shadow:0 20px 65px #0005;text-align:center}.wechat-dialog::backdrop{background:#13212bcc}.wechat-dialog h2{font-size:23px;margin:8px 28px 12px}.wechat-dialog p{font-size:16px;line-height:1.7}.wechat-dialog img{display:block;max-width:min(68vw,270px);max-height:45vh;object-fit:contain;margin:12px auto}.wechat-id{margin:8px 0;font-size:18px!important}.wechat-copy{min-height:44px;border:0;border-radius:8px;padding:8px 18px;background:#b83722;color:#fff;font:inherit;font-weight:700;cursor:pointer}.wechat-copy-status{display:block;min-height:24px;margin-top:8px;color:#53606b}.wechat-dialog a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 16px;color:#a83220;text-decoration:underline}.wechat-close{position:absolute;top:8px;right:8px;min-width:44px;min-height:44px;background:transparent;border:0;color:#26333b;font-size:30px;cursor:pointer}.wechat-dialog button:focus-visible,.mobile-contact-bar a:focus-visible,.mobile-contact-bar button:focus-visible,.desktop-contact-float a:focus-visible,.desktop-contact-float button:focus-visible{outline:3px solid #f8a56a;outline-offset:3px}
@media(max-width:650px){body{padding-bottom:calc(68px + env(safe-area-inset-bottom))}.desktop-contact-float{display:none}.mobile-contact-bar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:9px 16px calc(9px + env(safe-area-inset-bottom));background:#fff;box-shadow:0 -6px 24px #18273122}.mobile-contact-bar a,.mobile-contact-bar button{min-height:48px;box-shadow:none}.mobile-contact-bar a{background:#192a35}.mobile-menu{min-width:44px;min-height:44px;cursor:pointer}.navlinks.open a{display:flex;align-items:center;min-height:44px}.social-grid{grid-template-columns:1fr}.social-card{flex-direction:row;align-items:flex-start;padding:20px;min-height:0}.social-card p,.social-card small{font-size:16px;line-height:1.6}.social-qr img{height:220px}.social-qr span,.social-link{display:flex;align-items:center;min-height:44px;font-size:16px}.social-card h3{font-size:20px}}

/* baijianuan-news-cover-20261001 */
.news-item{display:flow-root}.news-cover{display:block;float:right;width:200px;margin:0 0 14px 18px}.news-cover img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px}.news-cover:focus-visible{outline:3px solid #b23824;outline-offset:3px}@media(max-width:650px){.news-cover{float:none;width:100%;margin:8px 0 16px}.news-item h3{clear:both}}

/* baijianuan-news-fit-20261001: consistent frame with whole image visible */
.news-cover{background:#f3f5f7;border-radius:10px;overflow:hidden}.news-cover img{aspect-ratio:16/10;object-fit:contain;background:#f3f5f7}.news-detail-cover{display:grid;place-items:center;width:100%;min-height:180px;max-height:560px;margin:24px 0;background:#f3f5f7;border:1px solid #e6e9ec;border-radius:14px;overflow:hidden}.news-detail-cover img{display:block;max-width:100%;max-height:min(70vh,560px);width:auto;height:auto;object-fit:contain}@media(max-width:650px){.news-detail-cover{min-height:160px;max-height:500px}.news-detail-cover img{max-height:min(65vh,500px)}}
.social-section{background:#f4f7f8}.social-section .lead{margin-bottom:20px}.social-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.social-row{display:flex;align-items:center;gap:14px;min-width:0;background:#fff;border:1px solid #e0e6ea;border-radius:14px;padding:16px}.social-row .social-badge{flex:none}.social-info{min-width:0;flex:1}.social-info h3{font-size:18px;margin:0 0 3px}.social-info p{font-size:14px;color:#56636d;margin:0;overflow-wrap:anywhere}.social-info small{display:block;margin-top:3px;color:#697781;font-size:13px}.social-actions{display:flex;align-items:center;gap:6px;flex-direction:column;flex:none}.social-open{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:112px;padding:9px 12px;background:#a93625;color:#fff;border:0;border-radius:8px;font-size:15px;font-weight:700;cursor:pointer}.social-open span{margin-left:6px}.social-extra{min-height:38px;padding:6px 8px;background:transparent;border:0;color:#9a392b;text-decoration:underline;cursor:pointer}.social-dialog{border:0;border-radius:16px;padding:20px;width:min(90vw,370px);box-shadow:0 24px 70px #0005;text-align:center}.social-dialog::backdrop{background:#101a22aa}.social-dialog-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.social-dialog h3{margin:0;font-size:20px}.social-close{min-width:44px;min-height:44px;background:#f0f2f4;color:#263540;border:0;border-radius:8px;font-size:26px;cursor:pointer}.social-dialog img{display:block;width:100%;max-height:58vh;object-fit:contain;margin:14px auto}.social-dialog p{margin:0;color:#56636d}.social-open:focus-visible,.social-extra:focus-visible,.social-close:focus-visible{outline:3px solid #172d47;outline-offset:3px}@media(max-width:650px){.social-list{grid-template-columns:1fr}.social-row{padding:12px;gap:10px}.social-info h3{font-size:17px}.social-open{min-width:106px}.social-section .lead{font-size:15px}}

.social-actions{flex-direction:row;gap:8px}.social-extra{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 12px;border:1px solid #c36557;border-radius:8px;text-decoration:none;font-size:15px;white-space:nowrap}.social-row{flex-wrap:wrap}.social-info{min-width:120px}@media(max-width:1000px){.social-list{grid-template-columns:1fr}}@media(max-width:480px){.social-actions{width:100%;padding-left:54px;justify-content:flex-start}.social-open{min-width:112px}}

/* About gallery 20261006 */
.about-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:32px}.about-gallery figure{margin:0;min-width:0;background:#fff;border:1px solid #e0e5eb;border-radius:16px;overflow:hidden}.about-gallery .about-gallery-image{display:block;cursor:zoom-in}.about-gallery .about-gallery-image:focus-visible{outline:3px solid #b23824;outline-offset:-3px}.about-gallery .about-gallery-image img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;background:#f1f4f6;border-radius:0}.about-gallery figcaption{padding:18px 22px}.about-gallery h3{margin:0 0 8px;font-size:22px}.about-gallery figcaption p{margin:0;font-size:16px;line-height:1.75;color:#586b7b}@media(max-width:700px){.about-gallery{grid-template-columns:1fr;gap:20px}.about-gallery figcaption{padding:16px 18px}}