:root {
    --ink: #202124;
    --muted: #61666d;
    --line: #d9dde2;
    --paper: #fff;
    --canvas: #f4f5f6;
    --brand: #b42318;
    --brand-dark: #7a1812;
    --accent: #176b55;
    --focus: #1769aa;
    --max: 1180px;
    --radius: 6px;
}

/* Construction gallery and featured case */
.construction-showcase{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:34px;align-items:center;margin:38px 0;padding:30px;background:#fff;border:1px solid var(--line);border-top:5px solid #0f766e}.construction-photo-stack{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(130px,.7fr);gap:10px;min-height:440px}.construction-photo-stack img{display:block;width:100%;height:100%;object-fit:cover;background:#e6efed}.construction-photo-main{max-height:560px}.construction-photo-stack>div{display:grid;grid-template-rows:1fr 1fr;gap:10px;min-height:0}.construction-showcase-copy>span{color:#0f766e;font-weight:700;letter-spacing:.08em}.construction-showcase-copy h2{font:700 32px/1.3 Georgia,"Songti SC",serif;margin:9px 0 12px}.construction-showcase-copy p{color:var(--muted)}.construction-showcase-copy ul{padding-left:20px;margin:18px 0 24px}.case-command{display:inline-flex;align-items:center;min-height:44px;background:#0f766e;color:#fff;padding:9px 17px;border-radius:4px;font-weight:700}.case-disclaimer{display:grid;gap:5px;margin:22px 0;padding:16px 18px;background:#fff8e8;border-left:5px solid #f59e0b}.case-disclaimer span{color:#5f584a}.case-gallery-lead{margin:30px 0}.case-gallery-lead>h2{margin-bottom:16px}.case-figure{margin:0;background:#f5f8f7;border:1px solid #d8e3e1;overflow:hidden}.case-figure img{display:block;width:100%;height:auto;background:#dce9e7}.case-figure figcaption{padding:12px 14px;color:#445452;font-size:14px;line-height:1.7}.case-figure-lead{max-width:760px;margin:0 auto 14px}.case-photo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start}.case-figure-wide{grid-column:1/-1}.case-figure-wide img{max-height:760px;object-fit:contain}.case-faq{margin-top:30px}.case-faq details{border-top:1px solid var(--line);padding:12px 0}.case-faq summary{cursor:pointer;font-weight:700;color:#123f3b}.case-faq details p{margin:8px 0 0;color:var(--muted)}

@media (max-width: 640px){.construction-showcase{grid-template-columns:1fr;padding:20px}.construction-photo-stack{min-height:380px}.construction-showcase-copy h2{font-size:27px}.case-photo-grid{grid-template-columns:1fr}.case-figure-wide{grid-column:auto}}
* {
    box-sizing: border-box;
}
html {
    font-size: 16px;
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: var(--canvas);
    color: var(--ink);
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    line-height: 1.65;
    letter-spacing: 0;
}
a {
    color: inherit;
    text-decoration: none;
}
a:hover {
    color: var(--brand);
}
img {
    display: block;
    max-width: 100%;
    height: auto;
}
.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
}
.skip-link:focus {
    left: 12px;
    top: 12px;
    z-index: 50;
    background: #fff;
    padding: 8px 12px;
    border: 2px solid var(--focus);
}
.site-header {
    background: #fff;
    border-top: 4px solid var(--brand);
    border-bottom: 1px solid var(--line);
}
.header-main {
    max-width: var(--max);
    min-height: 92px;
    margin: auto;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 28px;
}
.header-phone{margin-left:auto;display:grid;text-align:right;line-height:1.3}.header-phone span{font-size:12px;color:var(--muted)}.header-phone strong{font-size:22px;color:var(--brand)}.theme-waterproof{--brand:#0f766e;--brand-dark:#0b4f4a;--accent:#b45309}.theme-waterproof .site-nav{background:#153f3c}.waterproof-hero{min-height:460px;display:flex;align-items:center;background:#203f3d url('/assets/waterproof-roof-hero.jpg') center 54%/cover no-repeat;position:relative;color:#fff}.waterproof-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,34,32,.9) 0%,rgba(8,34,32,.72) 46%,rgba(8,34,32,.18) 100%)}.waterproof-hero-inner{width:min(var(--max),calc(100% - 40px));margin:auto;position:relative;z-index:1;max-width:1180px}.waterproof-hero-inner>span{display:inline-block;border-left:4px solid #f59e0b;padding-left:10px;font-weight:700}.waterproof-hero h1{font:700 50px/1.2 Georgia,"Songti SC",serif;margin:14px 0 12px}.waterproof-hero p{font-size:19px;max-width:680px;margin:0 0 25px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.call-command,.area-command{display:inline-flex;min-height:44px;align-items:center;padding:9px 17px;border-radius:4px;font-weight:700}.call-command{background:#f59e0b;color:#17211f}.area-command{background:#fff;color:#153f3c}.trust-strip{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:#fff;margin-bottom:34px}.trust-strip div{padding:18px 22px;border-right:1px solid var(--line)}.trust-strip div:last-child{border:0}.trust-strip strong,.trust-strip span{display:block}.trust-strip strong{font-size:18px;color:#0f625c}.trust-strip span{color:var(--muted);font-size:14px}.area-section{margin:34px 0}.area-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.area-grid a{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);padding:16px}.area-grid strong,.area-grid span{display:block}.area-grid strong{font-size:17px}.area-grid span{color:var(--muted);font-size:13px;margin-top:4px}.area-header{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;background:#fff;border-top:5px solid var(--brand);padding:28px;margin-bottom:26px}.area-header h1{font:700 36px/1.3 Georgia,"Songti SC",serif;margin:8px 0}.area-header p{margin:0;color:var(--muted)}.area-kicker{color:var(--brand);font-weight:700}.area-contact{background:#153f3c;color:#fff;padding:20px;display:grid;align-content:center}.area-contact span,.area-contact small{color:#d4e6e3}.area-contact a{font-size:27px;font-weight:700;color:#fff}.longtail-panel{margin-top:28px;border-top:2px solid var(--ink);padding-top:18px}.longtail-panel h2{font-size:20px}.longtail-panel div{display:flex;flex-wrap:wrap;gap:8px}.longtail-panel span{background:#eef5f4;border:1px solid #bad2ce;padding:5px 9px;font-size:14px}.phone-panel{margin-top:16px;background:#f59e0b;padding:18px;color:#17211f;display:grid}.phone-panel a{font-size:24px;font-weight:700}.phone-panel span{font-size:12px}.article-contact{margin-top:28px;padding:18px;border:1px solid #a8c9c4;background:#eef6f5;display:grid}.article-contact a{font-size:27px;font-weight:700;color:var(--brand)}.article-contact small{color:var(--muted)}.home-guides .guide-link{display:flex;justify-content:space-between;gap:20px;background:#fff;border-bottom:1px solid var(--line);padding:17px 20px}.guide-link h3{margin:3px 0;font-size:18px}.guide-link p{margin:0;color:var(--muted)}.guide-link span,.guide-link time{font-size:12px;color:var(--brand)}.service-note{margin-top:34px;background:#fff;border-left:5px solid #f59e0b;padding:22px}.service-note h2{margin-top:0}.service-note p{margin-bottom:0}.footer-phone{display:block;margin-top:6px;color:#fff;font-weight:700}.mobile-call{display:none}
.identity {
    min-width: 240px;
}
.brand-name {
    display: block;
    font-family: Georgia, "Songti SC", serif;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.15;
    color: var(--ink);
}
.brand-tagline {
    display: block;
    margin-top: 5px;
    font-size: 13px;
    color: var(--muted);
}
.site-search {
    margin-left: auto;
    width: min(360px, 36vw);
    display: flex;
}
.site-search input {
    min-width: 0;
    flex: 1;
    height: 42px;
    border: 1px solid #aeb4bb;
    border-right: 0;
    border-radius: 4px 0 0 4px;
    padding: 0 12px;
    font: inherit;
}
.site-search button {
    height: 42px;
    border: 0;
    border-radius: 0 4px 4px 0;
    background: var(--ink);
    color: #fff;
    padding: 0 18px;
    font: inherit;
    cursor: pointer;
}
.site-nav {
    background: var(--ink);
    color: #fff;
}
.nav-inner {
    max-width: var(--max);
    margin: auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    overflow-x: auto;
}
.nav-inner a {
    flex: 0 0 auto;
    padding: 12px 18px;
    font-size: 15px;
}
.nav-inner a:first-child {
    padding-left: 0;
}
.nav-inner a:hover {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 5px;
}
.page-shell {
    max-width: var(--max);
    margin: 0 auto;
    padding: 28px 20px 56px;
}
.breadcrumbs {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
}
.breadcrumbs a {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.breadcrumbs span + span:before {
    content: "/";
    padding: 0 8px;
    color: #979ca3;
}
.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 11px;
    border-bottom: 3px solid var(--ink);
    margin: 0 0 20px;
}
.section-head h2,
.section-head h1 {
    margin: 0;
    font:
        700 26px/1.3 Georgia,
        "Songti SC",
        serif;
}
.section-head a {
    font-size: 14px;
    color: var(--brand);
    font-weight: 700;
}
.content-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}
.content-card {
    min-width: 0;
    background: #fff;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.content-card-media {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: #e3e6e8;
}
.content-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.media-fallback {
    width: 100%;
    height: 100%;
    min-height: 120px;
    display: grid;
    place-items: center;
    background: #e9ecef;
    color: #6c7279;
    font:
        700 32px/1 Georgia,
        serif;
}
.content-card-kicker {
    font-size: 13px;
    color: var(--brand);
    font-weight: 700;
}
.content-card h2,
.content-card h3 {
    margin: 0;
    font-size: 18px;
    line-height: 1.45;
}
.content-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}
.content-meta {
    font-size: 13px;
    color: #737980;
    margin-top: auto;
}
.home-lead {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.8fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    margin-bottom: 32px;
}
.lead-main,
.lead-list {
    background: #fff;
}
.lead-main {
    padding: 30px;
}
.lead-label {
    display: inline-block;
    color: var(--brand);
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 12px;
}
.lead-main h1 {
    margin: 0 0 14px;
    font:
        700 38px/1.28 Georgia,
        "Songti SC",
        serif;
}
.lead-main p {
    color: var(--muted);
    font-size: 17px;
}
.lead-list {
    padding: 12px 22px;
}
.lead-list article {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
}
.lead-list article:last-child {
    border-bottom: 0;
}
.lead-list h2 {
    font-size: 16px;
    line-height: 1.45;
    margin: 0 0 5px;
}
.corp-hero {
    min-height: 390px;
    padding: 54px max(24px, calc((100vw - var(--max)) / 2 + 20px));
    display: flex;
    align-items: center;
    background: #18342d url("/assets/corporate-hero.jpg") 62% 52% / cover
        no-repeat;
    color: #fff;
    border-bottom: 8px solid #d1a749;
    position: relative;
    overflow: hidden;
}
.corp-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(9, 32, 27, 0.66);
}
.corp-hero-inner {
    max-width: 700px;
    position: relative;
    z-index: 1;
}
.corp-hero h1 {
    font:
        700 48px/1.2 Georgia,
        "Songti SC",
        serif;
    margin: 0 0 14px;
}
.corp-hero p {
    font-size: 20px;
    max-width: 650px;
    margin: 0 0 26px;
    color: #e6eeeb;
}
.command-link {
    display: inline-block;
    background: #fff;
    color: #18342d;
    padding: 11px 18px;
    border-radius: 4px;
    font-weight: 700;
}
.corporate-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 1px solid var(--line);
    margin: 0 0 32px;
    background: #fff;
}
.corporate-strip a {
    display: block;
    padding: 22px;
    border-right: 1px solid var(--line);
}
.corporate-strip a:last-child {
    border: 0;
}
.corporate-strip strong {
    display: block;
    color: var(--accent);
    font-size: 18px;
}
.catalog-head {
    background: #fff;
    border: 1px solid var(--line);
    padding: 28px;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.catalog-head h1 {
    font:
        700 36px/1.25 Georgia,
        "Songti SC",
        serif;
    margin: 0 0 8px;
}
.catalog-head p {
    margin: 0;
    color: var(--muted);
}
.catalog-head .site-search {
    width: min(420px, 44%);
}
.listing-header {
    background: #fff;
    border-left: 5px solid var(--brand);
    padding: 24px 28px;
    margin-bottom: 24px;
}
.listing-header h1 {
    font:
        700 32px/1.3 Georgia,
        "Songti SC",
        serif;
    margin: 0;
}
.listing-header p {
    max-width: 800px;
    color: var(--muted);
    margin: 10px 0 0;
}
.listing-rows {
    background: #fff;
    border-top: 1px solid var(--line);
}
.listing-row {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 24px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
}
.listing-row-media {
    aspect-ratio: 16/10;
    overflow: hidden;
    background: #e9ecef;
}
.listing-row-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.listing-row h2 {
    font-size: 21px;
    line-height: 1.4;
    margin: 2px 0 8px;
}
.listing-row p {
    margin: 0 0 8px;
    color: var(--muted);
}
.empty-state {
    padding: 48px 24px;
    background: #fff;
    border: 1px solid var(--line);
    text-align: center;
    color: var(--muted);
}
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 780px) minmax(240px, 1fr);
    gap: 40px;
    align-items: start;
}
.article-main {
    background: #fff;
    border-top: 5px solid var(--brand);
    padding: 34px;
}
.article-title {
    font:
        700 38px/1.32 Georgia,
        "Songti SC",
        serif;
    margin: 0 0 12px;
    overflow-wrap: anywhere;
}
.article-byline {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
}
.article-summary {
    margin: 22px 0;
    padding: 16px 18px;
    border-left: 4px solid var(--accent);
    background: #f2f6f4;
    color: #35413e;
}
.article-body {
    font-size: 17px;
    line-height: 1.82;
    overflow-wrap: anywhere;
}
.article-body p {
    margin: 0 0 1.25em;
}
.article-body h2,
.article-body h3,
.article-body h4 {
    line-height: 1.4;
    margin: 1.6em 0 0.7em;
}
.article-body a {
    color: #075ea8;
    text-decoration: underline;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    display: block;
    overflow-x: auto;
}
.article-body th,
.article-body td {
    border: 1px solid var(--line);
    padding: 8px 10px;
}
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 28px;
}
.tag-list a {
    border-bottom: 1px solid var(--brand);
    font-size: 14px;
    color: var(--muted);
}
.article-side {
    position: sticky;
    top: 18px;
}
.side-panel {
    border-top: 3px solid var(--ink);
    background: #fff;
    padding: 18px;
}
.side-panel h2 {
    font-size: 18px;
    margin: 0 0 12px;
}
.side-panel ol {
    padding-left: 20px;
    margin: 0;
}
.side-panel li {
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
}
.location-box,
.product-box {
    margin: 22px 0;
    padding: 18px;
    border: 1px solid var(--line);
    background: #fafafa;
}
.location-box dl,
.product-box dl {
    display: grid;
    grid-template-columns: 80px 1fr;
    margin: 0;
    gap: 8px;
}
.location-box dt,
.product-box dt {
    font-weight: 700;
}
.location-box dd,
.product-box dd {
    margin: 0;
}
.pagination {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    padding: 28px 0;
}
.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 3px;
}
.pagination .current {
    background: var(--ink);
    color: #fff;
}
.site-footer {
    background: #202124;
    color: #d8dadd;
    border-top: 5px solid var(--brand);
}
.footer-inner {
    max-width: var(--max);
    margin: auto;
    padding: 34px 20px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
}
.footer-brand {
    font:
        700 22px/1.3 Georgia,
        "Songti SC",
        serif;
    color: #fff;
}
.footer-links {
    display: flex;
    gap: 18px;
}
.footer-note {
    grid-column: 1/-1;
    border-top: 1px solid #43464a;
    padding-top: 16px;
    font-size: 13px;
    color: #aeb2b7;
}
.theme-corporate {
    --brand: #176b55;
    --brand-dark: #104c3d;
}
.theme-catalog {
    --brand: #9d3f09;
    --brand-dark: #6f2b05;
}
.theme-catalog .content-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.theme-corporate .content-card {
    border-top: 3px solid #d1a749;
}
@media (max-width: 900px) {
    .content-grid,
    .theme-catalog .content-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .home-lead {
        grid-template-columns: 1fr;
    }
    .article-layout {
        grid-template-columns: 1fr;
    }
    .article-side {
        position: static;
    }
    .corp-hero {
        min-height: 340px;
    }
    .catalog-head {
        align-items: flex-start;
        flex-direction: column;
    }
    .catalog-head .site-search {
        width: 100%;
    }
    .area-grid{grid-template-columns:repeat(2,1fr)}.area-header{grid-template-columns:1fr}.header-phone{margin-left:auto}
}
@media (max-width: 640px) {
    html {
        font-size: 15px;
    }
    .header-main {
        min-height: 0;
        padding: 14px 16px;
        display: block;
    }
    body.theme-waterproof{padding-bottom:62px}.header-phone{margin:10px 0 0;text-align:left}.site-search{display:none}.waterproof-hero{min-height:400px}.waterproof-hero-inner{width:calc(100% - 32px)}.waterproof-hero h1{font-size:37px}.waterproof-hero p{font-size:16px}.trust-strip,.area-grid{grid-template-columns:1fr}.trust-strip div{border-right:0;border-bottom:1px solid var(--line)}.area-header{padding:20px}.area-header h1{font-size:29px}.home-guides .guide-link{display:block}.guide-link time{display:block;margin-top:8px}.mobile-call{position:fixed;z-index:40;bottom:0;left:0;right:0;min-height:58px;background:#153f3c;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:8px 14px}.mobile-call span{font-size:12px}.mobile-call a{background:#f59e0b;color:#17211f;padding:9px 12px;border-radius:4px;font-weight:700}
    .identity {
        min-width: 0;
    }
    .brand-name {
        font-size: 25px;
    }
    .brand-tagline {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .site-search {
        width: 100%;
        margin: 14px 0 0;
    }
    .nav-inner {
        padding: 0 8px;
        flex-wrap: wrap;
        overflow-x: visible;
    }
    .nav-inner a {
        flex: 1 1 auto;
        padding: 9px 8px;
        text-align: center;
        font-size: 14px;
    }
    .nav-inner a:first-child {
        padding-left: 8px;
    }
    .page-shell {
        padding: 20px 16px 42px;
    }
    .home-lead {
        margin-bottom: 24px;
    }
    .lead-main {
        padding: 22px;
    }
    .lead-main h1 {
        font-size: 29px;
    }
    .lead-list {
        padding: 6px 18px;
    }
    .content-grid,
    .theme-catalog .content-grid {
        grid-template-columns: 1fr;
    }
    .content-card {
        padding: 16px;
    }
    .section-head h2,
    .section-head h1 {
        font-size: 23px;
    }
    .corp-hero {
        min-height: 310px;
        padding: 38px 20px;
    }
    .corp-hero h1 {
        font-size: 36px;
    }
    .corp-hero p {
        font-size: 17px;
    }
    .corporate-strip {
        grid-template-columns: 1fr;
    }
    .corporate-strip a {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }
    .catalog-head {
        padding: 20px;
    }
    .catalog-head h1 {
        font-size: 30px;
    }
    .listing-header {
        padding: 20px;
    }
    .listing-header h1 {
        font-size: 28px;
    }
    .listing-row {
        grid-template-columns: 100px minmax(0, 1fr);
        gap: 14px;
        padding: 16px 0;
    }
    .listing-row h2 {
        font-size: 17px;
        margin-top: 0;
    }
    .listing-row p {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .article-main {
        padding: 24px 20px;
    }
    .article-title {
        font-size: 30px;
    }
    .article-body {
        font-size: 16px;
        line-height: 1.75;
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .footer-links {
        flex-wrap: wrap;
    }
    .footer-note {
        grid-column: auto;
    }
}