:root {
  --kdv-ink: #07120f;
  --kdv-muted: #536660;
  --kdv-teal: #0f766e;
  --kdv-teal-dark: #084c46;
  --kdv-lime: #c8f46a;
  --kdv-line: rgba(7, 18, 15, 0.12);
  --kdv-soft: #eef6f2;
  --kdv-paper: rgba(255, 255, 255, 0.88);
  --kdv-radius: 28px;
  --kdv-shadow: 0 28px 80px rgba(7, 18, 15, 0.11);
}

.kdv-page {
  color: var(--kdv-ink);
  background:
    radial-gradient(circle at 7% 5%, rgba(15, 118, 110, 0.17), transparent 25rem),
    radial-gradient(circle at 92% 12%, rgba(200, 244, 106, 0.18), transparent 24rem),
    linear-gradient(145deg, #fbfcf9, #eef6f3 52%, #f8faf5);
}

.kdv-page::before { background-size: 64px 64px; opacity: 0.7; }
.kdv-page .app-header-inner { max-width: 1180px; }
.kdv-page .nav-dropdown-menu a[aria-current="page"] { color: var(--kdv-teal-dark); background: rgba(15, 118, 110, 0.1); }

.kdv-container { width: min(1180px, calc(100% - 40px)); margin-top: 42px; }
.breadcrumb { display: flex; align-items: center; gap: 9px; margin-bottom: 24px; color: #6b7c76; font-size: 13px; font-weight: 800; }
.breadcrumb a:hover { color: var(--kdv-teal); }

.kdv-hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 32px; margin-bottom: 30px; }
.hero-copy { max-width: 850px; }
.kdv-eyebrow,
.section-label,
.bridge-kicker,
.source-card > span {
  display: block;
  margin: 0 0 12px;
  color: var(--kdv-teal);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.kdv-hero h1,
.content-section h2,
.related-section h2,
.product-bridge h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.055em;
}
.kdv-hero h1 { max-width: 820px; font-size: clamp(44px, 7vw, 82px); line-height: 0.96; }
.kdv-hero .hero-copy > p { max-width: 760px; margin: 20px 0 0; color: var(--kdv-muted); font-size: clamp(17px, 2vw, 20px); line-height: 1.65; }
.trust-strip { min-width: 245px; display: grid; gap: 9px; padding: 18px; border: 1px solid var(--kdv-line); border-radius: 20px; background: rgba(255, 255, 255, 0.66); box-shadow: 0 16px 50px rgba(7, 18, 15, 0.06); backdrop-filter: blur(12px); }
.trust-strip span { display: grid; gap: 2px; color: #667871; font-size: 12px; line-height: 1.4; }
.trust-strip b { color: #19342d; font-size: 13px; }

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(390px, 0.97fr);
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--kdv-shadow), inset 0 1px 0 #fff;
  overflow: hidden;
}
.calculator-inputs { min-width: 0; padding: clamp(26px, 4vw, 48px); }
.section-heading { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 18px; align-items: start; margin-bottom: 30px; }
.section-heading.compact { margin-bottom: 24px; }
.section-index { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; color: var(--kdv-teal-dark); background: rgba(200, 244, 106, 0.72); font-family: "Space Grotesk", sans-serif; font-size: 12px; font-weight: 800; }
.section-heading .section-label { margin: 1px 0 7px; }
.section-heading h2 { margin: 0; font-family: "Space Grotesk", sans-serif; font-size: clamp(28px, 3.5vw, 42px); line-height: 1.04; letter-spacing: -0.045em; }
.section-heading p:not(.section-label) { max-width: 700px; margin: 10px 0 0; color: var(--kdv-muted); line-height: 1.65; }

.mode-switch { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-bottom: 25px; padding: 5px; border: 1px solid var(--kdv-line); border-radius: 16px; background: rgba(232, 241, 239, 0.72); }
.mode-button { min-height: 48px; padding: 9px 12px; border: 0; border-radius: 12px; color: #536660; background: transparent; font-size: 13px; font-weight: 900; cursor: pointer; transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease; }
.mode-button:hover { color: var(--kdv-ink); }
.mode-button.is-active { color: #fff; background: linear-gradient(135deg, #071b17, var(--kdv-teal)); box-shadow: 0 12px 28px rgba(15, 118, 110, 0.23); }
.mode-button:active { transform: scale(0.98); }

.kdv-amount-field { margin-top: 0; }
.money-input-wrap,
.percent-input-wrap { position: relative; }
.money-input-wrap > span { position: absolute; left: 17px; top: 50%; z-index: 1; color: var(--kdv-teal); font-family: "Space Grotesk", sans-serif; font-size: 22px; font-weight: 800; transform: translateY(-50%); pointer-events: none; }
.money-input-wrap input { height: 68px; padding-left: 48px !important; font-family: "Space Grotesk", sans-serif; font-size: 25px !important; font-weight: 700; font-variant-numeric: tabular-nums; }
.percent-input-wrap > span { position: absolute; right: 18px; top: 50%; color: var(--kdv-teal); font-weight: 900; transform: translateY(-50%); }
.percent-input-wrap input { padding-right: 48px !important; }
.field small { color: #74857f; font-size: 12px; }

.rate-fieldset { min-width: 0; margin: 22px 0 0; padding: 0; border: 0; }
.rate-fieldset legend { margin-bottom: 9px; color: #25342f; font-weight: 900; }
.rate-options { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.rate-options label { cursor: pointer; }
.rate-options input { position: absolute; opacity: 0; pointer-events: none; }
.rate-options span { min-height: 50px; display: grid; place-items: center; border: 1px solid var(--kdv-line); border-radius: 14px; color: #3f554f; background: rgba(255, 255, 255, 0.76); font-weight: 900; transition: border-color 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease; }
.rate-options input:checked + span { color: var(--kdv-teal-dark); border-color: rgba(15, 118, 110, 0.46); background: rgba(220, 249, 239, 0.88); box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.14); }
.rate-options input:focus-visible + span { outline: 3px solid rgba(15, 118, 110, 0.2); outline-offset: 2px; }
.custom-rate-field[hidden] { display: none; }
.form-error { margin: 14px 0 0 !important; padding: 12px 14px; border: 1px solid rgba(185, 28, 28, 0.2); border-radius: 12px; color: #991b1b !important; background: rgba(254, 226, 226, 0.72); font-size: 13px !important; font-weight: 800; }
.calculator-actions,
.multi-actions,
.export-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.kdv-button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 20px; border: 1px solid transparent; border-radius: 13px; font-weight: 900; text-decoration: none; cursor: pointer; transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease; }
.kdv-button:hover { transform: translateY(-2px); }
.kdv-button:active { transform: translateY(0) scale(0.98); }
.kdv-button.primary,
.kdv-button.bridge-primary { color: #fff; background: linear-gradient(135deg, #071a16, var(--kdv-teal)); box-shadow: 0 16px 34px rgba(15, 118, 110, 0.24); }
.kdv-button.secondary { color: #29433c; border-color: var(--kdv-line); background: rgba(255, 255, 255, 0.82); }

.result-panel { min-width: 0; padding: clamp(27px, 4vw, 48px); color: #eefbf7; background: radial-gradient(circle at 90% 4%, rgba(200, 244, 106, 0.14), transparent 22rem), linear-gradient(145deg, #061713, #0b2e28 60%, #0e4d45); }
.result-topline { display: flex; justify-content: space-between; gap: 15px; color: #9fc1b8; font-size: 10px; font-weight: 900; letter-spacing: 0.15em; }
.result-status { display: inline-flex; align-items: center; gap: 7px; letter-spacing: 0; }
.result-status i { width: 7px; height: 7px; border-radius: 50%; background: var(--kdv-lime); box-shadow: 0 0 0 5px rgba(200, 244, 106, 0.08); }
.result-panel > h2 { margin: 20px 0 22px; font-family: "Space Grotesk", sans-serif; font-size: clamp(29px, 3.3vw, 42px); letter-spacing: -0.045em; }
.result-grid { display: grid; gap: 10px; }
.result-grid article { padding: 18px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 18px; background: rgba(255, 255, 255, 0.055); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06); }
.result-grid article > span { display: block; margin-bottom: 7px; color: #a8c5bd; font-size: 12px; font-weight: 800; }
.result-grid strong { display: block; font-family: "Space Grotesk", sans-serif; font-size: clamp(27px, 3.4vw, 38px); line-height: 1; letter-spacing: -0.045em; font-variant-numeric: tabular-nums; }
.result-grid small { display: block; margin-top: 8px; color: #89aaa1; font-size: 11px; }
.result-grid .result-total { border-color: rgba(200, 244, 106, 0.28); background: rgba(200, 244, 106, 0.08); }
.result-grid .result-total strong { color: var(--kdv-lime); }
.formula-preview { display: grid; gap: 6px; margin-top: 14px; padding: 14px 16px; border-radius: 14px; color: #a8c5bd; background: rgba(0, 0, 0, 0.14); }
.formula-preview span { font-size: 10px; font-weight: 900; letter-spacing: 0.12em; }
.formula-preview code { color: #effcf8; font-size: 13px; white-space: normal; overflow-wrap: anywhere; }
.copy-result { min-height: 42px; margin-top: 13px; padding: 0 15px; border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 11px; color: inherit; background: rgba(255, 255, 255, 0.07); font-weight: 800; cursor: pointer; }
.privacy-note { margin: 15px 0 0 !important; color: #87a79e !important; font-size: 11px !important; }

.product-bridge { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 32px; margin: 24px 0; padding: clamp(24px, 4vw, 38px); border: 1px solid rgba(15, 118, 110, 0.16); border-radius: var(--kdv-radius); background: linear-gradient(115deg, rgba(225, 249, 239, 0.92), rgba(255, 255, 255, 0.82)); box-shadow: 0 20px 62px rgba(15, 118, 110, 0.09); }
.product-bridge h2 { font-size: clamp(29px, 4vw, 45px); }
.product-bridge p { max-width: 760px; margin: 12px 0 0; color: var(--kdv-muted); line-height: 1.65; }
.bridge-actions { min-width: 235px; display: grid; gap: 10px; text-align: center; }
.bridge-link { color: var(--kdv-teal-dark); font-size: 13px; font-weight: 900; }

.jump-nav { position: sticky; top: 92px; z-index: 8; display: flex; gap: 7px; margin: 0 0 24px; padding: 7px; border: 1px solid rgba(7, 18, 15, 0.09); border-radius: 16px; background: rgba(255, 255, 255, 0.84); box-shadow: 0 14px 42px rgba(7, 18, 15, 0.07); backdrop-filter: blur(16px); overflow-x: auto; scrollbar-width: none; }
.jump-nav::-webkit-scrollbar { display: none; }
.jump-nav a { flex: 0 0 auto; min-height: 38px; display: inline-flex; align-items: center; padding: 0 13px; border-radius: 10px; color: #51655f; font-size: 12px; font-weight: 900; }
.jump-nav a:hover { color: var(--kdv-teal-dark); background: rgba(15, 118, 110, 0.08); }

.content-section { scroll-margin-top: 158px; margin-top: 24px; padding: clamp(26px, 5vw, 52px); border: 1px solid rgba(255, 255, 255, 0.84); border-radius: var(--kdv-radius); background: var(--kdv-paper); box-shadow: 0 22px 66px rgba(7, 18, 15, 0.075); content-visibility: auto; contain-intrinsic-size: 800px; }
.content-section h2,
.related-section h2 { font-size: clamp(32px, 4.8vw, 54px); line-height: 1.02; }

.advanced-tabs { display: inline-grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; margin-bottom: 20px; padding: 5px; border: 1px solid var(--kdv-line); border-radius: 15px; background: var(--kdv-soft); }
.advanced-tabs button { min-height: 46px; padding: 8px 18px; border: 0; border-radius: 11px; color: #536660; background: transparent; font-weight: 900; cursor: pointer; }
.advanced-tabs button[aria-selected="true"] { color: #fff; background: var(--kdv-ink); box-shadow: 0 10px 24px rgba(7, 18, 15, 0.16); }
.advanced-panel { padding-top: 8px; }
.advanced-panel[hidden] { display: none; }
.advanced-copy { max-width: 760px; }
.advanced-copy h3 { margin: 0; font-size: clamp(24px, 3vw, 34px); }
.advanced-copy p { margin: 10px 0 0; color: var(--kdv-muted); line-height: 1.65; }
.advanced-note { margin-top: 16px; padding: 13px 15px; border-left: 3px solid var(--kdv-teal); border-radius: 0 11px 11px 0; color: #35514a; background: rgba(15, 118, 110, 0.07); font-size: 13px; font-weight: 700; }
.advanced-form { margin-top: 22px; }
.advanced-fields { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.advanced-fields .field { margin: 0; }
.advanced-fields label { font-size: 12px; }
.advanced-result { margin-top: 24px; padding: 18px; border: 1px solid var(--kdv-line); border-radius: 20px; background: rgba(239, 248, 245, 0.7); }
.result-summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.result-summary span { color: #6a7d76; font-size: 11px; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; }
.result-summary strong { color: var(--kdv-teal-dark); }
.responsive-table { width: 100%; overflow-x: auto; }
.responsive-table table { min-width: 620px; font-variant-numeric: tabular-nums; }
.responsive-table th,
.responsive-table td { white-space: nowrap; }
.responsive-table tfoot { font-weight: 900; }

.multi-head,
.multi-row { display: grid; grid-template-columns: minmax(150px, 1.2fr) minmax(140px, 1fr) minmax(120px, 0.8fr) 44px; gap: 10px; align-items: end; }
.multi-head { padding: 0 0 7px; color: #6b7d77; font-size: 11px; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.multi-row { margin-bottom: 9px; padding: 12px; border: 1px solid var(--kdv-line); border-radius: 16px; background: rgba(255, 255, 255, 0.72); }
.multi-row .field { margin: 0; }
.multi-row label { display: none; font-size: 11px; }
.multi-row input,
.multi-row select { min-height: 46px !important; border-radius: 12px !important; }
.remove-row { width: 44px; height: 44px; border: 1px solid rgba(185, 28, 28, 0.16); border-radius: 12px; color: #a22727; background: rgba(254, 226, 226, 0.55); font-size: 22px; cursor: pointer; }
.paste-details { margin-top: 18px; padding: 15px; border: 1px solid var(--kdv-line); border-radius: 16px; background: rgba(255, 255, 255, 0.55); }
.paste-details summary { color: var(--kdv-teal-dark); font-weight: 900; cursor: pointer; }
.paste-details p { color: var(--kdv-muted); font-size: 13px; line-height: 1.55; }
.paste-details code { padding: 2px 5px; border-radius: 5px; background: rgba(7, 18, 15, 0.07); }
.paste-details textarea { margin-top: 10px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.multi-summary-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 14px; }
.multi-summary-cards article { padding: 16px; border: 1px solid var(--kdv-line); border-radius: 14px; background: #fff; }
.multi-summary-cards span { display: block; margin-bottom: 7px; color: #6a7d76; font-size: 11px; font-weight: 800; }
.multi-summary-cards strong { font-family: "Space Grotesk", sans-serif; font-size: 23px; letter-spacing: -0.035em; font-variant-numeric: tabular-nums; }
.advanced-result .copy-result { color: var(--kdv-teal-dark); border-color: var(--kdv-line); background: #fff; }

.formula-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.formula-cards article { padding: 21px; border: 1px solid var(--kdv-line); border-radius: 18px; background: linear-gradient(145deg, #fff, #f1f8f5); }
.formula-cards span { display: block; margin-bottom: 14px; color: var(--kdv-teal); font-size: 11px; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; }
.formula-cards code { display: block; color: var(--kdv-ink); font-size: clamp(15px, 2vw, 20px); font-weight: 800; overflow-wrap: anywhere; }
.formula-cards p { margin: 9px 0 0; color: var(--kdv-muted); font-size: 13px; }
.common-mistake { margin-top: 14px; padding: 18px 20px; border: 1px solid rgba(217, 119, 6, 0.2); border-radius: 16px; color: #704318; background: rgba(254, 243, 199, 0.68); line-height: 1.6; }

.split-content { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr); gap: 24px; }
.split-content > div > p:not(.section-label) { color: var(--kdv-muted); line-height: 1.7; }
.rate-explainer { display: grid; gap: 9px; margin-top: 20px; }
.rate-explainer article { display: grid; grid-template-columns: 76px minmax(0, 1fr); align-items: center; gap: 15px; padding: 14px; border: 1px solid var(--kdv-line); border-radius: 15px; background: rgba(255, 255, 255, 0.65); }
.rate-explainer strong { color: var(--kdv-teal-dark); font-family: "Space Grotesk", sans-serif; font-size: 24px; }
.rate-explainer span { color: #4f655e; line-height: 1.45; }
.source-card { align-self: start; display: grid; gap: 9px; padding: 21px; border-radius: 20px; color: #dff7ef; background: linear-gradient(145deg, #071914, #0c4d44); box-shadow: 0 22px 55px rgba(7, 18, 15, 0.15); }
.source-card > span { color: var(--kdv-lime); }
.source-card a { padding: 11px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); font-size: 13px; font-weight: 800; }
.source-card p { margin: 8px 0 0; color: #94b5ac; font-size: 11px; }
.legal-disclaimer { grid-column: 1 / -1; margin: 0; padding: 16px 18px; border-radius: 15px; color: #526760; background: rgba(7, 18, 15, 0.045); font-size: 13px; line-height: 1.6; }

.examples-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.examples-grid article { padding: 22px; border: 1px solid var(--kdv-line); border-radius: 18px; background: rgba(255, 255, 255, 0.72); }
.examples-grid span { color: var(--kdv-teal); font-size: 12px; font-weight: 900; }
.examples-grid strong { display: block; margin: 11px 0; font-family: "Space Grotesk", sans-serif; font-size: 34px; letter-spacing: -0.04em; }
.examples-grid p { margin: 0; color: var(--kdv-muted); line-height: 1.55; }

.kdv-faq-list { display: grid; gap: 9px; }
.kdv-faq-list details { border: 1px solid var(--kdv-line); border-radius: 16px; background: rgba(255, 255, 255, 0.72); overflow: hidden; }
.kdv-faq-list summary { position: relative; padding: 19px 56px 19px 19px; font-family: "Space Grotesk", sans-serif; font-size: 17px; font-weight: 700; cursor: pointer; list-style: none; }
.kdv-faq-list summary::-webkit-details-marker { display: none; }
.kdv-faq-list summary::after { content: "+"; position: absolute; right: 17px; top: 50%; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; color: var(--kdv-teal); background: rgba(15, 118, 110, 0.08); transform: translateY(-50%); }
.kdv-faq-list details[open] summary::after { color: #fff; background: var(--kdv-teal); transform: translateY(-50%) rotate(45deg); }
.kdv-faq-list p { margin: 0; padding: 0 56px 19px 19px; color: var(--kdv-muted); line-height: 1.65; }

.related-section { display: grid; grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr); gap: 30px; margin-top: 24px; padding: clamp(26px, 5vw, 52px); border-radius: var(--kdv-radius); color: #ebfaf5; background: radial-gradient(circle at 3% 10%, rgba(200, 244, 106, 0.13), transparent 20rem), linear-gradient(135deg, #061713, #0d423a); }
.related-section .section-label { color: var(--kdv-lime); }
.related-links { display: grid; gap: 9px; }
.related-links a { display: grid; grid-template-columns: 80px minmax(0, 1fr) auto; align-items: center; gap: 13px; padding: 17px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 15px; background: rgba(255, 255, 255, 0.055); font-weight: 800; transition: background 180ms ease, transform 180ms ease; }
.related-links a:hover { background: rgba(255, 255, 255, 0.1); transform: translateX(3px); }
.related-links span { color: #94b7ad; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.related-links i { color: var(--kdv-lime); font-style: normal; }

.kdv-footer { margin-top: 54px; padding: 34px 20px; border-top: 1px solid var(--kdv-line); background: rgba(255, 255, 255, 0.55); }
.kdv-footer-inner { width: min(1120px, 100%); margin: auto; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 22px; }
.kdv-footer p { margin: 0; color: var(--kdv-muted); font-size: 13px; }
.kdv-footer-inner > div { display: flex; flex-wrap: wrap; gap: 15px; color: #4c625b; font-size: 12px; font-weight: 800; }
.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

.kdv-page button:focus-visible,
.kdv-page a:focus-visible,
.kdv-page summary:focus-visible { outline: 3px solid rgba(15, 118, 110, 0.28); outline-offset: 3px; }

@media (max-width: 980px) {
  .kdv-hero { grid-template-columns: 1fr; }
  .trust-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); min-width: 0; }
  .calculator-shell { grid-template-columns: 1fr; }
  .result-panel { display: grid; grid-template-columns: minmax(0, 1fr); }
  .result-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .result-grid strong { font-size: clamp(22px, 4.4vw, 34px); }
  .product-bridge { grid-template-columns: 1fr; }
  .bridge-actions { grid-template-columns: auto auto; align-items: center; justify-content: start; }
  .advanced-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-content { grid-template-columns: 1fr; }
  .source-card { width: 100%; }
  .related-section { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .kdv-container { width: calc(100% - 20px); margin-top: 22px; }
  .breadcrumb { margin: 0 4px 18px; }
  .kdv-hero { margin-inline: 4px; }
  .kdv-hero h1 { font-size: clamp(38px, 12vw, 54px); }
  .kdv-hero .hero-copy > p { font-size: 16px; }
  .trust-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 11px; }
  .trust-strip span { gap: 1px; font-size: 9px; }
  .trust-strip b { font-size: 11px; }
  .calculator-shell { border-radius: 24px; }
  .calculator-inputs,
  .result-panel { padding: 22px 16px; }
  .section-heading { gap: 12px; }
  .section-index { width: 34px; height: 34px; }
  .section-heading h2 { font-size: 29px; }
  .mode-switch { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .mode-button { min-height: 48px; padding-inline: 6px; font-size: 11.5px; }
  .rate-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-grid { grid-template-columns: 1fr; }
  .result-grid article { padding: 16px; }
  .result-grid strong { font-size: 30px; }
  .product-bridge { margin-top: 16px; padding: 22px 18px; border-radius: 22px; }
  .product-bridge h2 { font-size: 31px; }
  .bridge-actions { min-width: 0; grid-template-columns: 1fr; }
  .jump-nav { top: 74px; margin-bottom: 16px; }
  .content-section { scroll-margin-top: 130px; margin-top: 16px; padding: 24px 16px; border-radius: 22px; }
  .advanced-tabs { width: 100%; }
  .advanced-tabs button { padding: 7px 10px; font-size: 13px; }
  .advanced-fields { grid-template-columns: 1fr; }
  .multi-head { display: none; }
  .multi-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 44px; align-items: end; }
  .multi-row .field:first-child { grid-column: 1 / -1; }
  .multi-row .field label { display: block; }
  .multi-row .remove-row { grid-column: 3; grid-row: 2; }
  .multi-summary-cards,
  .formula-cards,
  .examples-grid { grid-template-columns: 1fr; }
  .rate-explainer article { grid-template-columns: 65px minmax(0, 1fr); }
  .related-section { padding: 25px 17px; border-radius: 22px; }
  .related-links a { grid-template-columns: 62px minmax(0, 1fr) auto; padding: 14px; font-size: 13px; }
  .kdv-footer-inner { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .kdv-footer-inner > div { justify-content: center; }
}

@media (max-width: 420px) {
  .kdv-container { width: calc(100% - 12px); }
  .kdv-hero { margin-inline: 6px; }
  .kdv-hero h1 { font-size: 38px; }
  .calculator-actions .kdv-button,
  .multi-actions .kdv-button { width: 100%; }
  .multi-row { grid-template-columns: 1fr 44px; }
  .multi-row .field { grid-column: 1 / -1; }
  .multi-row .remove-row { grid-column: 2; grid-row: 3; }
  .related-links a { grid-template-columns: 1fr auto; }
  .related-links span { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  .kdv-page *,
  .kdv-page *::before,
  .kdv-page *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}