/* Hengxin corporate site — responsive, no external frameworks */
:root{--red:#d01820;--deep:#ab0d14;--ink:#191919;--muted:#646464;--soft:#fff5f5;--dark:#111;--line:#eadfdf}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:94px}body{margin:0;background:#fff;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;line-height:1.72;overflow-x:clip}
img{display:block;max-width:100%;height:auto}.container{width:min(1160px,92%);margin:auto}a{color:inherit}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;background:#fff;padding:10px;z-index:100}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.98);border-bottom:1px solid #eee;backdrop-filter:blur(8px)}.nav-wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:84px}.brand{display:flex;align-items:center;gap:12px;min-width:0;text-decoration:none}.brand-logo{width:66px;height:66px;object-fit:contain;flex:0 0 auto}.brand-text{display:flex;min-width:0;flex-direction:column;line-height:1.3}.brand-text strong{font-size:17px}.brand-text small{font-size:12px;color:var(--muted);margin-top:4px}.nav{display:flex;align-items:center;gap:20px}.nav a{font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}.nav a:hover{color:var(--red)}.nav-cta{background:var(--red);color:#fff!important;border-radius:9px;padding:10px 15px}.menu-btn{display:none;border:0;background:transparent;color:var(--ink);font-size:27px;cursor:pointer}
.hero{background:linear-gradient(128deg,#fff6f6 0%,#fff 55%,#f6f6f6 100%);padding:64px 0 72px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:42px;align-items:center}.hero-content{min-width:0}.eyebrow,.section-heading>p{color:var(--red);font-size:13px;letter-spacing:1.5px;font-weight:800;margin:0 0 9px}.hero h1{margin:0 0 24px;line-height:1.42;font-weight:900}.hero-services{display:flex;flex-wrap:wrap;column-gap:16px;row-gap:5px;font-size:clamp(20px,2.3vw,27px);color:#272727}.hero-services>span{white-space:nowrap;border-bottom:3px solid rgba(208,24,32,.27);padding-bottom:2px}.hero-slogan{display:block;color:var(--red);font-size:clamp(32px,3.4vw,44px);letter-spacing:-.5px;margin-top:6px;white-space:nowrap}.lead{font-size:16px;color:#555;margin:0}.hero-contact{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:17px 0 0;font-weight:700}.hero-contact a,.about-phone a{color:var(--red);text-decoration:none}.hero-actions{display:flex;gap:12px;margin:23px 0}.btn{display:inline-flex;justify-content:center;align-items:center;text-align:center;padding:12px 21px;border:1px solid var(--red);border-radius:9px;font-weight:800;text-decoration:none;transition:background .2s}.btn-primary{background:var(--red);color:#fff}.btn-primary:hover{background:var(--deep)}.btn-outline{background:#fff;color:var(--red)}.hero-tags{display:flex;gap:8px;flex-wrap:wrap}.hero-tags span{padding:5px 11px;background:#fff;border:1px solid #efd0d0;border-radius:100px;font-size:13px;color:#722}.hero-side{margin:0;background:#fff;border-radius:17px;overflow:hidden;box-shadow:0 18px 52px rgba(0,0,0,.1)}.hero-side img{width:100%;aspect-ratio:1/1;object-fit:cover}.hero-side figcaption{display:flex;flex-direction:column;padding:14px 17px;background:var(--red);color:#fff}.hero-side figcaption small{font-size:13px;opacity:.9;margin-top:2px}
.section{padding:78px 0}.soft{background:var(--soft)}.dark{background:var(--dark);color:#fff}.section-heading{text-align:center;margin-bottom:32px}.section-heading h2{font-size:36px;margin:0 0 5px;line-height:1.3}.section-heading>span{color:#757575}.dark-heading>span{color:#ccc}.section-heading-left{text-align:left;margin-bottom:14px}
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.service-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:15px}.service-card h3{font-size:19px;line-height:1.4;margin:0 0 10px}.service-card h3:before{content:"";display:inline-block;width:5px;height:19px;border-radius:2px;background:var(--red);margin-right:9px;vertical-align:-3px}.service-card p{font-size:14px;color:#666;margin:0}.service-intro{margin-top:24px;padding:24px 27px;background:#fff8f8;border-left:5px solid var(--red);border-radius:0 12px 12px 0}.service-intro h3{margin:0 0 6px}.service-intro p{margin:0;color:#555}.service-intro strong{color:var(--red)}
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.case-card{background:#fff;border:1px solid #ebebeb;border-radius:16px;overflow:hidden;box-shadow:0 10px 22px rgba(0,0,0,.04)}.case-card img{width:100%;aspect-ratio:1/1;object-fit:cover}.case-copy{padding:16px 18px 20px}.case-copy h3{margin:0 0 7px;font-size:19px}.case-copy p{margin:0;font-size:14px;color:#666}
.region-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.region-card{padding:22px 23px;background:#1e1e1e;border:1px solid #363636;border-radius:16px}.region-card h3{margin:0 0 9px;font-size:24px}.region-card p{margin:0;color:#cfcfcf;font-size:15px}.area-note{margin:21px 0 0;color:#d0d0d0}.area-note a{color:#fff;font-weight:800;text-decoration:underline;text-underline-offset:3px}
.about-grid{display:grid;grid-template-columns:250px minmax(0,1fr);gap:54px;align-items:center}.about-image{background:linear-gradient(140deg,#f4f4f4,#fff3f3);padding:24px;border-radius:18px;border:1px solid #f0dddd}.about-image img{width:100%}.about-grid p{color:#555}.about-phone{font-weight:800}
.faq-wrap{width:min(920px,92%);margin:auto}.faq-list{display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid #ecdcdc;border-radius:13px;padding:15px 18px}.faq-list summary{font-weight:800;cursor:pointer}.faq-list p{color:#555;margin:10px 0 0}
.contact-section{background:#fff0f0}.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:42px;align-items:center}.contact-grid h2{font-size:35px;line-height:1.3;margin:0 0 10px}.contact-grid p:not(.eyebrow){color:#555}.contact-card{background:#fff;border:1px solid #eed8d8;padding:26px;border-radius:17px;display:flex;flex-direction:column;align-items:flex-start;gap:5px;box-shadow:0 14px 32px rgba(140,10,10,.06)}.contact-card>span{color:#777;font-size:12px;margin-top:7px}.contact-card strong{font-size:16px}.contact-number{font-weight:800;color:var(--red);font-size:25px;text-decoration:none}.contact-card .btn{margin-top:15px;width:100%}
.footer{background:#0b0b0b;color:#aaa;padding:25px 0}.footer-wrap{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand img{width:56px;height:56px;border-radius:10px;background:#fff}.footer-brand strong{display:block;font-size:14px;color:#fff}.footer-brand small{display:block;font-size:12px}.footer-wrap>p{font-size:12px}.icp-record{width:100%;font-size:12px}.icp-record a{color:#ccc}
.floating-call{position:fixed;bottom:18px;right:18px;z-index:60;display:flex;align-items:center;gap:8px;border-radius:100px;background:var(--red);color:#fff;text-decoration:none;font-weight:800;padding:11px 18px;box-shadow:0 10px 28px rgba(0,0,0,.2)}
@media (max-width:1080px){.hero-grid{gap:28px}.nav{gap:12px}.brand-text strong{font-size:15px}}
@media (max-width:980px){.nav{display:none;position:absolute;top:84px;left:0;right:0;background:#fff;border-bottom:1px solid #ddd;padding:15px 4%;flex-direction:column;align-items:stretch}.nav.open{display:flex}.menu-btn{display:block}.hero-grid,.contact-grid{grid-template-columns:1fr}.hero-side{max-width:650px}.service-grid,.case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-grid{grid-template-columns:190px minmax(0,1fr);gap:30px}}
@media (max-width:640px){body{padding-bottom:calc(84px + env(safe-area-inset-bottom,0px))}.brand-logo{width:52px;height:52px}.brand-text strong{font-size:14px}.brand-text small{font-size:11px}.nav-wrap{min-height:74px}.nav{top:74px}.hero{padding:44px 0 56px}.hero-services{column-gap:11px;font-size:20px}.hero-slogan{font-size:clamp(26px,7.7vw,35px)}.hero h1{margin-bottom:18px}.lead{font-size:15px}.hero-actions{flex-direction:column}.btn{width:100%}.hero-contact{font-size:15px}.hero-side figcaption{font-size:14px}.section{padding:57px 0}.section-heading h2{font-size:29px}.section-heading>span{font-size:14px}.service-grid,.case-grid,.region-grid{grid-template-columns:1fr}.service-card{padding:19px}.region-card{padding:19px}.about-grid{grid-template-columns:1fr;gap:20px}.about-image{max-width:225px;width:100%;margin:auto}.contact-grid h2{font-size:29px}.footer-wrap{align-items:flex-start;flex-direction:column}.footer-wrap>p{margin:0}.floating-call{bottom:calc(10px + env(safe-area-inset-bottom,0px));right:12px;left:12px;justify-content:center;padding:12px 13px}.contact-number{font-size:23px}}
@media (max-width:350px){.hero-services{font-size:18px;column-gap:8px}.hero-slogan{font-size:25px}.brand-text strong{font-size:13px}.hero-contact{gap:4px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}


/* GEO and genuine local service narrative */
.geo-h1{line-height:1.2;font-size:clamp(33px,3.2vw,45px);font-weight:900;letter-spacing:-.6px;margin:0 0 16px}
.geo-h1 span{display:block}.geo-h1 span:last-child{color:var(--red)}
.hero-subline{font-size:clamp(15px,1.7vw,19px);font-weight:800;color:#313131;line-height:1.7;margin:0 0 16px;overflow-wrap:anywhere}
.hero-city{margin:15px 0 0;font-size:15px;color:#444}.hero-city strong{color:#ac141b}
.proof-band{padding:64px 0 72px;background:#fff}
.proof-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
.proof-grid article{border:1px solid #eddfdf;border-top:4px solid var(--red);border-radius:13px;background:#fff;padding:24px 20px}
.proof-grid article>strong{color:var(--red);font-weight:900;font-size:24px}
.proof-grid h3{margin:8px 0;font-size:17px}.proof-grid p{font-size:14px;color:#555;margin:0}
.service-intro p+p{margin-top:12px}
.process-section{background:#fff}
.process-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.process-grid article{background:#fff7f7;border:1px solid #efdddd;border-radius:14px;padding:22px}
.process-grid article>span{font-size:14px;color:var(--red);font-weight:900}.process-grid h3{font-size:17px;margin:9px 0}
.process-grid p{color:#555;font-size:14px;margin:0}
.process-guide-link{text-align:center;margin:25px auto 0;font-size:15px}.process-guide-link a{font-weight:800;color:var(--red)}
.guide-top{background:linear-gradient(135deg,#fff2f2,#fff);padding:65px 0}
.guide-top h1{font-size:clamp(31px,4.1vw,46px);line-height:1.28;margin:8px 0 12px}
.guide-top .intro{font-size:17px;max-width:950px;color:#555}
.guide-top .guide-meta{font-size:14px;color:#666}
.guide-content{padding:62px 0 74px}.guide-content h2{font-size:26px;line-height:1.4;margin:36px 0 15px}
.guide-content h3{font-size:18px;margin:22px 0 9px}
.guide-content p,.guide-content li{font-size:16px;color:#444}
.guide-content ul{padding-left:22px}
.guide-content blockquote{border-left:4px solid var(--red);background:#fff6f6;padding:14px 22px;margin:18px 0;border-radius:0 10px 10px 0}
.guide-content blockquote p{margin:0}
.guide-content table{width:100%;border-collapse:collapse;font-size:15px;margin:20px 0}
.guide-content th,.guide-content td{text-align:left;padding:12px 14px;border:1px solid #e2dede;vertical-align:top}
.guide-content th{background:#fff0f0;color:#333}
.guide-content .detail-contact{padding:25px;border-radius:14px;background:#fff1f1;margin-top:35px}
.guide-content .detail-contact strong{color:#b81419}
.guide-area{padding:20px;border-radius:14px;background:#f9f9f9;margin:25px 0}
.guide-area p{margin:7px 0;font-size:14px}
@media(max-width:1050px){.proof-grid,.process-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.proof-band{padding:50px 0}.proof-grid,.process-grid{grid-template-columns:1fr}.proof-grid article{padding:18px}.geo-h1{font-size:clamp(30px,8.2vw,37px)}.hero-subline{font-size:15px}.guide-content{padding:40px 0}.guide-content h2{font-size:22px}.guide-content table{display:block;overflow-x:auto}}