/* DOWESTON public engineering knowledge, version 2026101401. */
.dw-knowledge-access { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0; padding: 12px 16px; background: #f0f6fd; border-bottom: 1px solid #dce5f0; font-size: 14px; line-height: 1.7; }
.dw-knowledge-access > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 0; }
.dw-knowledge-access a { padding: 2px 20px; color: #0054a6; border-inline-start: 1px solid #c8d9ed; }
.dw-knowledge-access a:first-child { border-inline-start: 0; }
.dw-knowledge-access a:hover { text-decoration: underline; }
.dw-knowledge-page .dw-knowledge-access { display: none; }
.dw-knowledge-page { min-width: 0; background: #f7f9fc; color: #243448; }
.dw-knowledge-page #condition, .dw-knowledge-page #goreg, .dw-knowledge-page #service { display: none; }
.dw-knowledge-page #header .content { width: auto; max-width: 1200px; margin: 0 auto; padding: 0 24px; box-sizing: border-box; }
.dw-knowledge-page #header .content .logo { left: 24px; }
.dw-knowledge-page #header .content .right { right: 24px; }
.dw-knowledge-page #header .content .center { display: none; }
.dw-knowledge-page #footer .content, .dw-knowledge-page #copyright .content { width: auto; max-width: 1200px; padding: 0 24px; margin: 0 auto; box-sizing: border-box; }
.dw-knowledge-page #footer .content { display: flex; gap: 42px; flex-wrap: wrap; }
.dw-knowledge-page #footer .content .con1 { width: auto; flex: 2 1 400px; }
.dw-knowledge-page #footer .content .con2, .dw-knowledge-page #footer .content .con3 { float: none; width: auto; margin: 0; flex: 1 1 180px; }
.dwk, .dwk-entry { --dwk-blue: #0054a6; --dwk-ink: #172f4e; --dwk-muted: #64758a; --dwk-line: #dce5f0; font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif; color: var(--dwk-ink); line-height: 1.75; }
.dwk *, .dwk-entry * { box-sizing: border-box; }
.dwk [hidden], .dwk-entry [hidden] { display: none !important; }
.dwk { width: calc(100% - 48px); max-width: 1152px; margin: 0 auto; padding-bottom: 64px; font-size: 16px; }
.dwk a, .dwk-entry a { color: var(--dwk-blue); text-decoration: none; }
.dwk a:hover, .dwk-entry a:hover { text-decoration: underline; }
.dwk a:focus-visible, .dwk button:focus-visible, .dwk input:focus-visible, .dwk select:focus-visible, .dwk summary:focus-visible, .dwk-entry a:focus-visible { outline: 3px solid #4da8e6; outline-offset: 4px; }
.dwk-nav { display: flex; gap: 28px; align-items: center; padding: 23px 0 0; border-bottom: 1px solid var(--dwk-line); flex-wrap: wrap; }
.dwk-nav a { display: inline-block; font-size: 14px; color: #52667e; padding: 0 0 17px; border-bottom: 3px solid transparent; }
.dwk-nav a.is-active { color: var(--dwk-blue); border-color: var(--dwk-blue); font-weight: 700; }
.dwk-language-note { background: #edf4fb; color: #405d7c; font-size: 14px; border-inline-start: 3px solid #76a6d5; padding: 10px 16px; margin: 20px 0 0; }
.dwk-kicker { display: block; font-size: 12px; letter-spacing: .08em; font-weight: 700; color: var(--dwk-blue); margin-bottom: 12px; }
.dwk h1 { font-size: clamp(30px, 3vw, 44px); letter-spacing: -.02em; line-height: 1.35; font-weight: 700; margin: 0 0 20px; }
.dwk h2 { font-size: 25px; line-height: 1.5; font-weight: 700; }
.dwk h3 { font-size: 19px; line-height: 1.6; font-weight: 700; }
.dwk p { margin: 0 0 16px; }
.dwk-hero { display: grid; grid-template-columns: 1.6fr 1fr; gap: 62px; padding: 60px 0 48px; align-items: center; }
.dwk-hero > div > p { color: #52667e; font-size: 18px; max-width: 630px; }
.dwk-hero-aside { padding: 28px 30px; background: #eaf2fb; border-radius: 8px; border-top: 3px solid var(--dwk-blue); }
.dwk-hero-aside > b { font-size: 21px; }
.dwk-hero-aside > p { font-size: 14px; color: #52667e; margin-top: 8px; }
.dwk-hero-aside > div { display: flex; gap: 14px; padding: 12px 0; border-top: 1px solid #cdddf0; font-size: 14px; align-items: flex-start; }
.dwk-hero-aside > div > span { color: #487bb0; font-weight: 700; font-size: 13px; padding-top: 1px; }
.dwk-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.dwk-button, .dwk button.dwk-button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; color: #fff; background: var(--dwk-blue); border: 1px solid var(--dwk-blue); border-radius: 5px; padding: 10px 19px; min-height: 44px; font-size: 14px; font-weight: 600; line-height: 1.6; cursor: pointer; text-align: center; font-family: inherit; }
.dwk-button:hover, .dwk a.dwk-button:hover { background: #004486; color: #fff; text-decoration: none; }
.dwk-button.dwk-button-secondary { background: #fff; color: var(--dwk-blue); border-color: #b6cbe2; }
.dwk-button.dwk-button-secondary:hover { background: #edf4fb; color: var(--dwk-blue); }
.dwk a.dwk-button { color: #fff; }
.dwk a.dwk-button-secondary, .dwk a.dwk-button-secondary:hover { color: var(--dwk-blue); }
.dwk button:disabled { opacity: .55; cursor: wait; }
.dwk-text-button { background: transparent; border: none; color: var(--dwk-blue); cursor: pointer; padding: 8px 4px; font-family: inherit; font-size: 14px; line-height: 1.5; }
.dwk-text-button:hover { text-decoration: underline; }
.dwk-text-link { font-size: 14px; font-weight: 600; }
.dwk-section { padding: 30px 0; }
.dwk-section-head { display: flex; gap: 20px; align-items: end; justify-content: space-between; margin-bottom: 24px; }
.dwk-section-head .dwk-kicker { margin-bottom: 5px; }
.dwk-muted { color: var(--dwk-muted); font-size: 13px; }
.dwk-toolbar { display: flex; align-items: end; gap: 20px; margin-bottom: 24px; }
.dwk-toolbar label, .dwk-field label { display: block; color: #314964; font-size: 14px; margin-bottom: 7px; font-weight: 600; }
.dwk-search { flex: 1; }
.dwk-role { width: 220px; }
.dwk input, .dwk select { width: 100%; min-width: 0; font-size: 15px; padding: 11px 12px; line-height: 1.5; border: 1px solid #c8d5e5; background: #fff; border-radius: 4px; color: #243448; min-height: 45px; font-family: inherit; }
.dwk input::placeholder { color: #77879a; font-size: 13px; }
.dwk-topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.dwk-topic-card { background: #fff; border: 1px solid var(--dwk-line); border-radius: 7px; padding: 24px; display: flex; flex-direction: column; min-width: 0; transition: border-color .15s; }
.dwk-topic-card:hover { border-color: #91b4da; }
.dwk-card-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--dwk-muted); font-size: 12px; margin-bottom: 15px; }
.dwk-card-meta > span:first-child { color: var(--dwk-blue); }
.dwk-topic-card h3 { margin-bottom: 12px; }
.dwk-topic-card h3 a { color: var(--dwk-ink); }
.dwk-topic-card p { font-size: 14px; color: #52667e; flex: 1; margin-bottom: 24px; }
.dwk-topic-card .dwk-text-link { align-self: flex-start; }
.dwk-empty { text-align: center; padding: 35px; background: #fff; border: 1px dashed #c6d7e9; color: #64758a; }
.dwk-banner { display: flex; gap: 32px; align-items: center; justify-content: space-between; border: 1px solid var(--dwk-line); background: #eaf2fb; border-radius: 7px; padding: 28px 32px; margin-top: 30px; }
.dwk-banner h2 { font-size: 22px; }
.dwk-banner p { color: #52667e; font-size: 14px; margin: 8px 0 0; max-width: 730px; }
.dwk-banner .dwk-button { flex-shrink: 0; }
.dwk-back { display: inline-block; margin-top: 28px; font-size: 14px; }
.dwk-article-head { padding: 38px 0 28px; max-width: 930px; }
.dwk-article-head h1 { font-size: clamp(28px, 3vw, 40px); margin-bottom: 16px; }
.dwk-article-head > p { font-size: 17px; color: #52667e; }
.dwk-article-layout { display: grid; grid-template-columns: 230px minmax(0,1fr); gap: 54px; border-top: 1px solid var(--dwk-line); padding-top: 32px; }
.dwk-toc { align-self: start; position: sticky; top: 116px; }
.dwk-toc h2 { font-size: 15px; margin-bottom: 15px; }
.dwk-toc ol { padding-inline-start: 19px; font-size: 13px; }
.dwk-toc li { padding: 0 0 12px 4px; }
.dwk-toc a { color: #52667e; }
.dwk-prose { font-size: 16px; line-height: 1.95; }
.dwk-prose section { margin-bottom: 36px; scroll-margin-top: 115px; }
.dwk-prose h2 { margin-bottom: 16px; font-size: 24px; }
.dwk-prose p { color: #344b66; }
.dwk-prose ul { padding-inline-start: 23px; margin: 12px 0 16px; }
.dwk-prose li { margin-bottom: 10px; color: #344b66; list-style: disc; }
.dwk-sources { border-top: 1px solid var(--dwk-line); padding-top: 24px; }
.dwk-sources h2 { font-size: 18px; }
.dwk-sources li { font-size: 14px; overflow-wrap: anywhere; }
.dwk-auth { padding: 24px 28px; background: #eaf2fb; border: 1px solid #bdd1e8; border-radius: 6px; margin: 12px 0 30px; }
.dwk-auth h2 { font-size: 20px; margin-bottom: 10px; }
.dwk-auth p { margin-bottom: 8px; font-size: 14px; }
.dwk-status { font-size: 14px; color: #245b91; }
.dwk-status:empty { display: none; }
.dwk-status.is-error { color: #a04418; }
.dwk-notice { padding: 14px 18px; color: #665428; background: #fff8e8; border-inline-start: 3px solid #d0a65b; font-size: 14px; }
.dwk-tool-layout { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(0,1fr); gap: 28px; align-items: start; margin-top: 28px; }
.dwk-form, .dwk-result { padding: 28px; border: 1px solid var(--dwk-line); background: #fff; border-radius: 7px; min-width: 0; }
.dwk-form fieldset { border: none; padding: 0 0 28px; margin: 0 0 26px; border-bottom: 1px solid var(--dwk-line); min-width: 0; }
.dwk-form legend { display: flex; gap: 12px; align-items: center; font-size: 17px; font-weight: 700; margin-bottom: 18px; }
.dwk-form legend > span { color: #4c83ba; font-size: 12px; letter-spacing: .05em; }
.dwk-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.dwk-span-2 { grid-column: span 2; }
.dwk-flow-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.dwk-form-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.dwk-field-note { font-size: 12px; color: #64758a; margin: 0 0 12px; }
.dwk-form .dwk-form-grid + .dwk-field-note { margin: 12px 0 0; }
.dwk-result { position: sticky; top: 110px; }
.dwk-result h2 { font-size: 22px; margin-bottom: 12px; }
.dwk-result-empty { margin-top: 25px; background: #f4f7fb; padding: 25px 20px; color: #75869a; font-size: 14px; }
.dwk-completeness { color: #345c86; padding-bottom: 14px; border-bottom: 1px solid var(--dwk-line); font-size: 14px; }
.dwk-result-flag { background: #fff9ec; border: 1px solid #ebd4a5; padding: 12px 14px; margin-bottom: 10px; border-radius: 4px; font-size: 13px; color: #735723; }
.dwk-result-flag b { display: block; font-size: 12px; color: #8c6424; margin-bottom: 3px; }
.dwk-summary { border-top: 1px solid var(--dwk-line); margin-top: 22px; padding-top: 16px; }
.dwk-summary summary { font-size: 14px; font-weight: 600; cursor: pointer; }
.dwk-summary dl { font-size: 12px; margin-top: 15px; }
.dwk-summary dl > div { display: grid; grid-template-columns: 115px minmax(0,1fr); gap: 12px; padding: 7px 0; border-bottom: 1px solid #edf1f6; }
.dwk-summary dt { color: #64758a; }
.dwk-summary dd { color: #334b66; overflow-wrap: anywhere; }
.dwk-result .dwk-actions { gap: 8px; }
.dwk-result .dwk-muted { margin-top: 14px; }
.dwk-library-list { display: grid; gap: 14px; }
.dwk-library-item { display: flex; gap: 24px; align-items: center; justify-content: space-between; padding: 24px 26px; background: #fff; border: 1px solid var(--dwk-line); border-radius: 6px; }
.dwk-library-item > div:first-child { min-width: 0; }
.dwk-library-item h3 { margin-bottom: 8px; }
.dwk-library-item p { font-size: 14px; color: #64758a; margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.dwk-item-actions { display: flex; gap: 16px; align-items: center; flex-shrink: 0; }
.dwk-library-item .dwk-card-meta { margin-bottom: 10px; }
.dwk-local-library { border-top: 1px solid var(--dwk-line); margin-top: 18px; }
.dwk-entry { margin: 24px 0; border: 1px solid #d5e3f2; background: #f0f6fd; padding: 25px 28px; border-radius: 7px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.dwk-entry h2 { font-size: 23px; font-weight: 700; line-height: 1.5; margin: 0 0 10px; }
.dwk-entry p { font-size: 14px; line-height: 1.9; color: #52667e; }
.dwk-entry .dwk-kicker { font-size: 10px; letter-spacing: .04em; margin-bottom: 8px; }
.dwk-entry-links { display: grid; align-content: center; }
.dwk-entry-links a { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; font-size: 14px; border-bottom: 1px solid #d5e3f2; }
.dwk-entry-links a:last-child { border-bottom: 0; }
@media (max-width: 1000px) { .dwk-hero { gap: 28px; } .dwk-topic-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .dwk-article-layout { grid-template-columns: 190px minmax(0,1fr); gap: 30px; } .dwk-tool-layout { grid-template-columns: minmax(0,1fr); } .dwk-result { position: static; } }
@media (max-width: 700px) {
  .dw-knowledge-page #header .content { height: 72px; line-height: 72px; padding: 0 16px; }
  .dw-knowledge-page #header .content .logo { left: 16px; }
  .dw-knowledge-page #header .content .logo img { width: 137px; }
  .dw-knowledge-page #header .content .right { right: 16px; }
  .dw-knowledge-page #header .content .right .zt { top: 21px; margin-right: 9px; padding-right: 9px; }
  .dw-knowledge-page #header .content .right .zt a { font-size: 12px; }
  .dw-knowledge-page #header .content .right .zt a:first-child { margin-right: 7px; }
  .dw-knowledge-page #header .content .right .langswitch { top: 21px; margin-top: 0; }
  .dw-knowledge-page #header .content .right .langswitch .cur { min-width: 50px; font-size: 12px; }
  .dw-knowledge-page #header .content .right .langswitch .cur .glb { display: none; }
  .dw-knowledge-page #header .content .right .userzone { top: 21px; margin-right: 9px; padding-right: 9px; }
  .dw-knowledge-page #header .content .right .tips { font-size: 11px; max-width: 93px; overflow: hidden; text-overflow: ellipsis; }
  .dw-knowledge-page #footer { padding: 40px 0; }
  .dw-knowledge-page #footer .content, .dw-knowledge-page #copyright .content { padding: 0 20px; gap: 26px; }
  .dw-knowledge-page #footer .content .con1 { flex-basis: 100%; }
  .dw-knowledge-page #footer .content .con2, .dw-knowledge-page #footer .content .con3 { flex-basis: 100%; }
  .dwk { width: calc(100% - 32px); padding-bottom: 40px; }
  .dwk-nav { gap: 20px; padding-top: 20px; }
  .dwk-nav a { font-size: 12px; padding-bottom: 13px; }
  .dwk-hero { grid-template-columns: minmax(0,1fr); gap: 28px; padding: 36px 0 22px; }
  .dwk-hero > div > p { font-size: 16px; }
  .dwk-hero-aside { padding: 22px; }
  .dwk h2 { font-size: 22px; }
  .dwk-section-head { align-items: start; flex-wrap: wrap; gap: 8px; }
  .dwk-section-head .dwk-muted { font-size: 12px; }
  .dwk-toolbar { flex-direction: column; align-items: stretch; gap: 14px; }
  .dwk-role { width: 100%; }
  .dwk-topic-grid { grid-template-columns: minmax(0,1fr); gap: 14px; }
  .dwk-topic-card { padding: 22px; }
  .dwk-banner { flex-direction: column; align-items: start; padding: 24px; gap: 20px; }
  .dwk-article-head { padding: 28px 0 22px; }
  .dwk-article-head > p { font-size: 15px; }
  .dwk-article-layout { grid-template-columns: minmax(0,1fr); gap: 25px; }
  .dwk-toc { position: static; background: #edf4fb; padding: 20px; border-radius: 5px; }
  .dwk-toc ol { columns: 1; }
  .dwk-prose { font-size: 15px; }
  .dwk-prose section { scroll-margin-top: 88px; }
  .dwk-prose h2 { font-size: 22px; }
  .dwk-auth { padding: 22px; }
  .dwk-form, .dwk-result { padding: 22px 18px; }
  .dwk-form-grid { gap: 15px 12px; }
  .dwk-library-item { flex-direction: column; align-items: stretch; gap: 17px; padding: 22px; }
  .dwk-item-actions { justify-content: flex-start; }
  .dwk-entry { grid-template-columns: minmax(0,1fr); gap: 15px; padding: 22px; }
  .dw-knowledge-access { font-size: 12px; padding: 10px 12px; }
  .dw-knowledge-access a { padding: 2px 10px; }
}
@media (max-width: 380px) { .dwk-form-grid { grid-template-columns: minmax(0,1fr); } .dwk-span-2 { grid-column: auto; } .dwk-nav { gap: 14px; } .dw-knowledge-page #header .content .logo img { width: 112px; } }
@media print {
  .dw-knowledge-page { background: #fff; }
  .dw-knowledge-page #header, .dw-knowledge-page #footer, .dw-knowledge-page #copyright, .dw-knowledge-page #update_peizhi, .dw-knowledge-page #tanbox, .dwk-nav, .dwk-auth, .dwk-status, .dwk-language-note, .dwk-form, .dwk-result .dwk-actions, .dwk-result-empty, .dwk-back, .dwk-banner { display: none !important; }
  .dwk { width: 100%; max-width: none; padding: 0; font-size: 11pt; }
  .dwk-article-head { padding: 0 0 12px; }
  .dwk h1 { font-size: 24pt; }
  .dwk-tool-layout { display: block; margin-top: 12px; }
  .dwk-result { position: static; border: 0; padding: 0; }
  .dwk-result-flag { break-inside: avoid; background: transparent; color: #333; }
  .dwk-summary dl > div { break-inside: avoid; }
  .dwk-notice { background: transparent; color: #333; border-color: #aaa; }
}
@media (prefers-reduced-motion: reduce) { .dwk-topic-card { transition: none; } }