:root {
  --teal: #07867f;
  --teal-dark: #056b67;
  --gold: #ae884d;
  --ink: #17252d;
  --muted: #68767d;
  --line: #e3e9ea;
  --soft: #f5f9f9;
  --navy: #182630;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button, input, select { font: inherit; }
h1, h2, h3, p { margin-top: 0; letter-spacing: 0; }
p { color: var(--muted); line-height: 1.75; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 14px; background: var(--navy); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.anchor-target { position: absolute; top: 0; }
:focus-visible { outline: 3px solid rgba(7,134,127,.4); outline-offset: 3px; }

.site-header { position: sticky; top: 0; z-index: 40; height: 68px; display: flex; align-items: center; gap: 32px; padding: 0 max(22px, calc((100vw - var(--max)) / 2)); background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.brand { display: flex; align-items: center; gap: 10px; min-width: 230px; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border: 2px solid var(--teal); color: var(--teal); font-size: 12px; font-weight: 900; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 18px; }
.brand small { margin-top: 2px; color: var(--muted); font-size: 8px; }
nav { flex: 1; display: flex; align-items: center; justify-content: flex-end; gap: 28px; font-size: 14px; }
nav a { position: relative; padding: 25px 0; }
nav a:hover { color: var(--teal); }
nav a:hover::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 2px; background: var(--teal); }
.menu-toggle { display: none; margin-left: auto; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 8px 12px; border-radius: 4px; }

.hero { position: relative; min-height: 535px; overflow: hidden; }
.hero-image { position: absolute; inset: 0; height: 100%; object-fit: cover; object-position: center; }
.hero-overlay { position: absolute; inset: 0 auto 0 0; width: 58%; background: rgba(246,251,251,.94); }
.hero-content { position: relative; z-index: 2; max-width: var(--max); margin: 0 auto; padding: 105px 24px 80px; }
.eyebrow { margin-bottom: 10px; color: var(--teal); font-size: 12px; font-weight: 850; }
.hero h1 { margin-bottom: 12px; font-size: 52px; line-height: 1.1; }
.hero h2 { max-width: 610px; margin-bottom: 17px; font-size: 25px; line-height: 1.4; }
.hero-content > p { max-width: 560px; color: #405159; }
.button { min-height: 45px; display: inline-flex; align-items: center; justify-content: center; padding: 0 21px; border: 1px solid transparent; border-radius: 4px; font-weight: 750; cursor: pointer; }
.button.primary { background: var(--teal); color: #fff; }
.button.primary:hover { background: var(--teal-dark); }
.button.secondary { border-color: var(--teal); background: rgba(255,255,255,.88); color: var(--teal-dark); }
.button.secondary:hover { background: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }

.section { max-width: var(--max); margin: 0 auto; padding: 68px 24px; }
.section-title { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.section-title p { margin-bottom: 8px; color: var(--teal); font-size: 12px; font-weight: 750; }
.section-title h2 { margin-bottom: 0; font-size: 32px; line-height: 1.35; }
.section-title h2::after { content: ""; display: block; width: 38px; height: 2px; margin: 13px auto 0; background: var(--teal); }

.image-card-grid { display: grid; gap: 17px; }
.image-card-grid.four { grid-template-columns: repeat(4, 1fr); }
.image-card-grid article, .article-grid article { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: #fff; transition: transform .2s, box-shadow .2s; }
.image-card-grid article:hover, .article-grid article:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(24,49,57,.09); }
.image-card-grid img { height: 190px; object-fit: cover; }
.image-card-grid article > div { padding: 20px; }
.image-card-grid h3 { margin-bottom: 8px; font-size: 18px; }
.image-card-grid p { margin: 0; font-size: 13px; }

.help-section { padding-top: 44px; padding-bottom: 44px; }
.quick-answer-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.quick-answer { min-height: 118px; padding: 22px 25px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quick-answer h3 { margin-bottom: 7px; font-size: 17px; }
.quick-answer p { margin: 0; font-size: 13px; }

.service-options-band { background: var(--soft); }
.service-option-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-option-grid article { padding: 30px; border: 1px solid var(--line); border-top: 3px solid var(--teal); border-radius: 5px; background: #fff; }
.service-option-grid span { color: var(--gold); font-size: 12px; font-weight: 850; }
.service-option-grid h3 { margin: 16px 0 10px; font-size: 21px; }
.service-option-grid p { min-height: 104px; margin-bottom: 15px; font-size: 13px; }
.service-option-grid ul { margin: 0; padding: 17px 0 0 18px; border-top: 1px solid var(--line); color: #526168; font-size: 13px; line-height: 1.9; }
.service-option-note, .reliability-note { max-width: 850px; margin: 22px auto 0; text-align: center; font-size: 12px; }

.reliability-section { padding-bottom: 45px; }
.reliability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.reliability-grid article { min-height: 160px; display: grid; grid-template-columns: 38px 1fr; gap: 12px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.reliability-grid b { color: var(--gold); font-size: 12px; }
.reliability-grid h3 { margin-bottom: 7px; font-size: 17px; }
.reliability-grid p { margin: 0; font-size: 12px; }

.tools-section { padding-top: 32px; }
.tools-layout { display: grid; grid-template-columns: 1fr .85fr .85fr; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.calculator-panel, .result-panel { min-height: 330px; padding: 30px; }
.calculator-panel { display: grid; gap: 16px; }
.panel-kicker { margin-bottom: 4px; color: var(--teal); font-size: 11px; font-weight: 800; }
.calculator-panel h3 { margin-bottom: 0; font-size: 22px; }
label { display: grid; gap: 7px; color: #45545b; font-size: 13px; font-weight: 700; }
input, select { width: 100%; height: 43px; padding: 0 12px; border: 1px solid #ccd7d9; border-radius: 4px; background: #fff; color: var(--ink); }
.calculator-button { width: 108px; }
.form-note { margin: 0; font-size: 11px; }
.result-panel { display: flex; flex-direction: column; justify-content: center; background: var(--soft); }
.result-panel span { color: var(--muted); font-size: 13px; }
.result-panel strong { margin: 13px 0 10px; color: var(--teal); font-size: 30px; }
.tool-shortcuts { display: grid; grid-template-rows: repeat(3, 1fr); }
.tool-shortcuts article { display: grid; grid-template-columns: 64px 1fr; gap: 14px; align-items: center; padding: 19px 24px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tool-shortcuts article:last-child { border-bottom: 0; }
.tool-shortcuts b { color: var(--teal); font-size: 13px; }
.tool-shortcuts h3 { margin-bottom: 5px; font-size: 17px; }
.tool-shortcuts p { margin: 0; font-size: 12px; }
.report-lookup { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 18px; align-items: end; margin-top: 18px; padding: 24px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.report-copy h3 { margin-bottom: 6px; font-size: 19px; }
.report-copy p:last-child { margin: 0; font-size: 12px; }
.report-result { grid-column: 1 / -1; min-height: 0; color: var(--muted); font-size: 13px; }
.report-result.error { color: #a54137; }
.report-result.success { color: var(--teal-dark); }
.report-result .button { margin-top: 8px; }
.report-download-item { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.report-download-item:first-child { border-top: 0; }
.report-download-item p { margin: 0; }
.report-download-item .button { margin: 0; }
.report-samples { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: center; margin-top: 18px; padding: 28px; border: 1px solid var(--line); border-radius: 6px; background: var(--soft); }
.report-samples-copy h3 { margin-bottom: 8px; font-size: 21px; }
.report-samples-copy p:last-child { margin: 0; font-size: 12px; }
.report-sample-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.report-sample-card { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: #fff; }
.report-sample-card img { height: 230px; object-fit: cover; object-position: top; }
.report-sample-card span { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 13px 14px; }
.report-sample-card strong { font-size: 14px; }
.report-sample-card small { color: var(--teal-dark); font-size: 10px; }
.report-sample-card:hover { border-color: #91bdb9; box-shadow: 0 10px 24px rgba(24,49,57,.07); }

.process-section { padding-top: 35px; }
.process-list { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; padding: 0; list-style: none; }
.process-list::before { content: ""; position: absolute; top: 32px; right: 7%; left: 7%; border-top: 1px dashed #aababb; }
.process-list li { position: relative; text-align: center; }
.process-list span { position: relative; z-index: 2; width: 64px; height: 64px; display: grid; place-items: center; margin: 0 auto 14px; border: 1px solid #80b9b5; border-radius: 50%; background: #fff; color: var(--teal); font-size: 19px; font-weight: 800; }
.process-list strong, .process-list small { display: block; }
.process-list strong { line-height: 1.4; }
.process-list small { margin-top: 6px; color: var(--muted); font-size: 12px; line-height: 1.5; }

.assessment-band { background: var(--soft); }
.assessment-layout { display: grid; grid-template-columns: 1fr .95fr; gap: 55px; align-items: center; }
.assessment-layout h2 { font-size: 32px; }
.assessment-layout ul { padding-left: 20px; color: #43545b; line-height: 2; }
.assessment-layout img { height: 330px; object-fit: cover; border-radius: 5px; }

.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.article-grid article { display: grid; grid-template-columns: 145px 1fr; }
.article-grid img { height: 100%; min-height: 190px; object-fit: cover; }
.article-grid article > div { padding: 20px; }
.article-grid time { color: var(--teal); font-size: 11px; font-weight: 800; }
.article-grid h3 { margin: 8px 0; font-size: 17px; line-height: 1.45; }
.article-grid p { margin: 0; font-size: 12px; }

.faq-section { padding-top: 35px; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
details { border-bottom: 1px solid var(--line); }
summary { padding: 18px 4px; cursor: pointer; font-weight: 700; list-style-position: inside; }
details p { padding: 0 20px 18px; margin: 0; font-size: 13px; }

.contact-band { background: var(--navy); color: #fff; }
.contact-inner { max-width: var(--max); display: grid; grid-template-columns: 1fr 190px; gap: 60px; align-items: center; margin: 0 auto; padding: 54px 24px; }
.contact-inner h2 { margin-bottom: 8px; font-size: 31px; }
.contact-inner p { max-width: 670px; color: rgba(255,255,255,.7); }
.contact-inner address { margin-top: 18px; color: rgba(255,255,255,.78); font-size: 13px; font-style: normal; }
.contact-qr { width: 190px; padding: 8px 8px 12px; background: #fff; color: var(--ink); text-align: center; }
.contact-qr img { width: 100%; height: 220px; object-fit: cover; object-position: center 39%; }
.contact-qr span { display: block; margin-top: 8px; color: var(--muted); font-size: 11px; line-height: 1.5; }

.site-footer { max-width: var(--max); display: flex; align-items: center; justify-content: space-between; gap: 36px; margin: 0 auto; padding: 30px 24px 42px; }
.footer-brand { display: flex; align-items: center; gap: 14px; min-width: 240px; }
.footer-brand strong, .footer-brand small { display: block; }
.footer-brand small { color: var(--muted); font-size: 8px; }
.site-footer p { max-width: 760px; margin: 0; font-size: 11px; }
.footer-copy { max-width: 760px; }
.footer-copy a { display: inline-block; margin-top: 8px; color: var(--teal-dark); font-size: 12px; font-weight: 750; }

.article-page { background: var(--soft); }
.article-header { height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 0 max(20px, calc((100vw - 900px) / 2)); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.97); }
.article-header a:first-child { color: var(--teal-dark); font-weight: 850; }
.article-header a:last-child { color: var(--muted); font-size: 14px; }
.article-shell { max-width: 900px; margin: 0 auto; padding: 54px 20px 80px; }
.article-body { padding: 54px 64px; border: 1px solid var(--line); background: #fff; }
.article-body h1 { margin-bottom: 18px; font-size: 40px; line-height: 1.25; }
.article-body h2 { margin: 38px 0 12px; font-size: 24px; line-height: 1.35; }
.article-body p, .article-body li { font-size: 16px; line-height: 1.9; }
.article-body ul { padding-left: 22px; color: #4d5c63; }
.article-lead { padding-bottom: 24px; border-bottom: 1px solid var(--line); color: #42535a; font-size: 18px !important; }
.article-index-list { display: grid; gap: 14px; margin-top: 30px; }
.article-index-list a { display: grid; gap: 7px; padding: 22px; border: 1px solid var(--line); border-radius: 5px; }
.article-index-list a:hover { border-color: #91bdb9; box-shadow: 0 10px 24px rgba(24,49,57,.07); }
.article-index-list span { color: var(--teal); font-size: 12px; font-weight: 800; }
.article-index-list strong { font-size: 19px; line-height: 1.45; }
.article-index-list small { color: var(--muted); font-size: 13px; line-height: 1.6; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media (max-width: 1000px) {
  .menu-toggle { display: block; }
  nav { position: absolute; top: 68px; right: 16px; left: 16px; display: none; padding: 14px; border: 1px solid var(--line); background: #fff; box-shadow: 0 12px 30px rgba(24,49,57,.12); }
  nav.open { display: grid; grid-template-columns: 1fr 1fr; }
  nav a { padding: 11px; }
  .image-card-grid.four { grid-template-columns: repeat(2, 1fr); }
  .service-option-grid { grid-template-columns: 1fr; }
  .service-option-grid p { min-height: 0; }
  .reliability-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-layout { grid-template-columns: 1fr 1fr; }
  .report-lookup { grid-template-columns: 1fr 1fr; }
  .report-samples { grid-template-columns: 1fr; }
  .report-copy, .report-result { grid-column: 1 / -1; }
  .tool-shortcuts { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); grid-template-rows: auto; }
  .tool-shortcuts article { border-top: 1px solid var(--line); border-bottom: 0; }
  .article-grid article { grid-template-columns: 1fr; }
  .article-grid img { height: 190px; }
}

@media (max-width: 720px) {
  .site-header { height: 62px; padding: 0 15px; }
  .brand { min-width: 0; }
  .brand-mark { width: 32px; height: 32px; }
  .brand strong { font-size: 15px; }
  nav { top: 62px; }
  .hero { min-height: 600px; }
  .hero-image { object-position: 66% center; }
  .hero-overlay { inset: 0; width: 100%; background: rgba(246,251,251,.87); }
  .hero-content { padding: 76px 20px 58px; }
  .hero h1 { font-size: 41px; }
  .hero h2 { font-size: 21px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .section { padding: 54px 18px; }
  .section-title h2 { font-size: 28px; }
  .image-card-grid.four, .quick-answer-grid, .service-option-grid, .reliability-grid, .tools-layout, .assessment-layout, .article-grid, .faq-grid { grid-template-columns: 1fr; }
  .report-lookup { grid-template-columns: 1fr; }
  .report-sample-grid { grid-template-columns: 1fr; }
  .report-sample-card img { height: 270px; }
  .report-copy, .report-result { grid-column: auto; }
  .quick-answer { min-height: 0; }
  .tool-shortcuts { grid-column: auto; grid-template-columns: 1fr; }
  .tool-shortcuts article { border-left: 0; }
  .process-list { grid-template-columns: 1fr 1fr; gap: 28px; }
  .process-list::before { display: none; }
  .assessment-layout img { height: 250px; }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-qr { width: min(220px, 100%); }
  .contact-qr img { height: 255px; }
  .site-footer { display: block; }
  .site-footer p { margin-top: 18px; }
  .article-shell { padding: 24px 12px 50px; }
  .article-body { padding: 34px 22px; }
  .article-body h1 { font-size: 31px; }
  .article-body h2 { font-size: 21px; }
  .article-body p, .article-body li { font-size: 15px; }
}