:root {
  --paper: #F7F5F1;
  --paper-soft: #EFEBE4;
  --ink: #1F1D1A;
  --ink-soft: #5C574F;
  --line: #D9D3C8;
  --line-strong: #C3BBAC;
  --accent: #7A2E2E;
  --accent-soft: #F0E4E2;
  --support: #2F4A4E;
  --support-soft: #E4EAEA;
  --radius: 6px;
  --shell: 1120px;
  --shell-wide: 1200px;
  --gap: 32px;
  --font-serif: "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Courier New", monospace;
}

/* ============================================================
   base
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--support);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.32;
  color: var(--ink);
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============================================================
   layout — 全站骨架
   ============================================================ */

.site-body {
  min-height: 100vh;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
}

.brand-mark {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brand:hover .brand-mark {
  color: var(--accent);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--ink);
  background-color: var(--paper-soft);
}

.nav-link.is-current {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background-color: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--ink);
}

.site-main {
  display: block;
}

.home-main,
.inner-main {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 0 32px 72px;
}

.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px 32px 96px;
}

.site-footer {
  background-color: var(--paper-soft);
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.footer-inner {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 48px 32px 32px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2.4fr);
  gap: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 12px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-list a {
  font-size: 14px;
  color: var(--ink-soft);
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  background-color: var(--paper-soft);
}

.footer-copy {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 18px 32px 26px;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ============================================================
   components — 通用元件
   ============================================================ */

.issue-tag,
.issue-label,
.section-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-head {
  margin-bottom: 28px;
  padding-top: 8px;
}

.section-title {
  font-size: 26px;
  margin-bottom: 10px;
}

.section-intro,
.section-desc,
.section-note {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 68ch;
}

.section-foot {
  margin-top: 20px;
  font-size: 15px;
}

.inline-link {
  color: var(--accent);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

.inline-link:hover,
.inline-link:focus-visible {
  color: var(--support);
  border-bottom-color: var(--support);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background-color: var(--accent);
  color: #FBF8F4;
  border-color: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #5F2222;
  border-color: #5F2222;
  color: #FBF8F4;
}

.btn-ghost {
  background-color: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: var(--paper-soft);
  border-color: var(--ink);
  color: var(--ink);
}

.sub-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-bottom: 8px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.section-figure,
.section-media,
.media-figure,
.scene-figure,
.stage-media {
  margin: 32px 0;
}

.section-figure img,
.section-media img,
.media-figure img,
.scene-figure img,
.stage-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background-color: var(--paper-soft);
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  background-color: var(--paper-soft);
}

.section-caption,
.media-caption,
.scene-caption,
.hero-caption,
.stage-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 首页
   ============================================================ */

.fact-bar {
  background-color: var(--support);
  color: #E9EFEF;
}

.fact-bar-text {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 10px 32px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

.hero {
  padding: 48px 0 8px;
  border-bottom: 1px solid var(--line);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 1fr);
  gap: 48px;
  align-items: start;
  padding-bottom: 40px;
}

.hero-lead {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-size: 40px;
  line-height: 1.24;
  margin-bottom: 18px;
}

.hero-judge {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-catalog {
  background-color: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 26px 22px;
}

.catalog-title {
  font-size: 19px;
  margin-bottom: 8px;
}

.catalog-intro {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.catalog-list {
  display: flex;
  flex-direction: column;
}

.catalog-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.catalog-item:first-child {
  border-top: none;
  padding-top: 4px;
}

.catalog-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.catalog-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}

.catalog-link:hover,
.catalog-link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.catalog-note {
  grid-column: 2 / 3;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.section {
  padding: 52px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: none;
}

.section-directions .direction-list {
  border-top: 1px solid var(--line);
}

.direction-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 20px 12px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.direction-row:hover {
  background-color: var(--paper-soft);
}

.direction-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.direction-body {
  min-width: 0;
}

.direction-name {
  font-size: 18px;
  margin-bottom: 6px;
}

.direction-link {
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
}

.direction-link:hover,
.direction-link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.direction-scene {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.direction-enter {
  font-size: 14px;
  white-space: nowrap;
  color: var(--accent);
}

.direction-enter::after {
  content: " →";
}

.direction-enter:hover,
.direction-enter:focus-visible {
  color: var(--support);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 44px;
  align-items: start;
}

.point-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.point-item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.point-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 1px;
  background-color: var(--accent);
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 24px;
  color: var(--accent);
}

.step-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.quality-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.standard-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.standard-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.standard-num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 26px;
  color: var(--accent);
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-item {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-item::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line-strong);
}

.team-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.section-team .team-group {
  padding: 22px 20px 22px 0;
  border-right: 1px solid var(--line);
}

.section-team .team-group:last-child {
  border-right: none;
  padding-right: 0;
}

.section-team .group-name {
  font-size: 17px;
  margin-bottom: 10px;
}

.section-team .group-work {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.section-team .group-map {
  font-size: 13px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  position: relative;
  padding: 18px 40px 18px 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent);
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-question:hover,
.faq-question:focus-visible {
  color: var(--accent);
}

.faq-answer {
  padding: 0 40px 20px 0;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.faq-answer p + p {
  margin-top: 10px;
}

.column-index {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.column-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.column-card:hover,
.column-card:focus-visible {
  background-color: var(--paper-soft);
  border-color: var(--line-strong);
}

.column-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.column-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.column-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 内页通用外壳
   ============================================================ */

.inner-main {
  padding-top: 28px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.breadcrumb-sep {
  color: var(--line-strong);
}

.breadcrumb-current {
  color: var(--ink);
}

.page-header {
  padding-bottom: 28px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.page-description {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.page-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.page-lead,
.page-lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 62ch;
}

/* ============================================================
   pages — 服务方向页
   ============================================================ */

.directions-list {
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.directions-list .direction-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  align-items: start;
  gap: 20px;
  padding: 24px 12px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.directions-list .direction-row:hover {
  background-color: var(--paper-soft);
}

.direction-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 4px;
}

.directions-list .direction-name {
  font-size: 19px;
  margin-bottom: 8px;
}

.directions-list .direction-scene {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.direction-basis {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 14px;
  border-left: 2px solid var(--line);
  margin-bottom: 12px;
}

.directions-list .direction-link {
  display: inline-block;
  font-size: 14px;
  color: var(--accent);
}

.directions-list .direction-link::after {
  content: " →";
}

.directions-list .direction-link:hover,
.directions-list .direction-link:focus-visible {
  color: var(--support);
}

.prep-section,
.compare-section,
.scene-section,
.path-section {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.path-section {
  border-bottom: none;
}

.prep-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 32px;
}

.prep-item {
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.prep-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.prep-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.compare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.compare-col-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.compare-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.compare-item {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.compare-need .compare-item {
  padding-left: 18px;
  position: relative;
}

.compare-need .compare-item::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
}

.compare-map .compare-item a {
  color: var(--accent);
  border-bottom: 1px solid var(--line-strong);
}

.compare-map .compare-item a:hover,
.compare-map .compare-item a:focus-visible {
  color: var(--support);
  border-bottom-color: var(--support);
}

.scene-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 32px;
}

.scene-item {
  padding: 18px 20px;
  background-color: var(--paper-soft);
  border-radius: var(--radius);
}

.scene-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.scene-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.path-item {
  padding-top: 16px;
  border-top: 2px solid var(--accent);
}

.path-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.path-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.path-link {
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--line-strong);
}

.path-link:hover,
.path-link:focus-visible {
  color: var(--support);
  border-bottom-color: var(--support);
}

/* ============================================================
   pages — 方法与质量页
   ============================================================ */

.section-summary,
.section-boundary {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.section-boundary {
  border-bottom: none;
}

.summary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 40px;
}

.summary-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.summary-no {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 26px;
  color: var(--accent);
}

.summary-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.6fr);
  gap: 0 40px;
}

.method-name-col {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.method-desc-col {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.method-name {
  font-size: 17px;
  line-height: 1.5;
}

.method-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.method-reason {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.section-crosslink {
  margin-top: 28px;
  font-size: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.check-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.check-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.check-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  line-height: 28px;
}

.check-body {
  min-width: 0;
}

.check-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.check-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.quality-standard {
  margin-top: 36px;
  padding: 24px 26px;
  background-color: var(--paper-soft);
  border-radius: var(--radius);
}

.quality-subtitle {
  font-size: 16px;
  margin-bottom: 14px;
}

.quality-standard .standard-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 32px;
}

.quality-standard .standard-item {
  position: relative;
  display: block;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.quality-standard .standard-item::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line-strong);
}

.boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.boundary-name {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.boundary-yes-col .boundary-name {
  border-bottom-color: var(--support);
}

.boundary-no-col .boundary-name {
  border-bottom-color: var(--accent);
}

.boundary-col .boundary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.boundary-col .boundary-item {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 团队分工页
   ============================================================ */

.team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  gap: 48px;
  align-items: start;
  padding-top: 8px;
}

.team-main {
  min-width: 0;
}

.team-groups,
.team-interfaces,
.team-links,
.team-prepare {
  padding-bottom: 44px;
  margin-bottom: 44px;
  border-bottom: 1px solid var(--line);
}

.team-prepare {
  border-bottom: none;
  margin-bottom: 0;
}

.team-groups .section-title,
.team-interfaces .section-title,
.team-links .section-title,
.team-prepare .section-title {
  font-size: 24px;
  margin-bottom: 10px;
}

.team-groups .section-intro,
.team-interfaces .section-intro,
.team-links .section-intro,
.team-prepare .section-intro {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.role-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.role-item {
  list-style: none;
}

.role-card {
  height: 100%;
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

.role-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 8px;
}

.role-name {
  font-size: 18px;
  margin-bottom: 10px;
}

.role-scope {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.role-meta {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.interface-table {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0 40px;
}

.interface-col {
  min-width: 0;
}

.interface-head {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.interface-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.interface-list li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.interface-note {
  margin-top: 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding: 14px 16px;
  background-color: var(--paper-soft);
  border-radius: var(--radius);
}

.role-link-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.role-link-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 6px 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.role-link-no {
  grid-row: 1 / 4;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  line-height: 28px;
}

.role-link-title {
  font-size: 17px;
}

.role-link-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.role-link-links {
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.prepare-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: prepare;
}

.prepare-item {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.prepare-item::before {
  counter-increment: prepare;
  content: counter(prepare, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.prepare-note {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.team-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.aside-block {
  padding: 20px 20px 18px;
  background-color: var(--paper-soft);
  border-radius: var(--radius);
}

.aside-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin-bottom: 12px;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-list a {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.aside-list a:hover,
.aside-list a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.aside-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 常见问题页
   ============================================================ */

.stage-nav {
  margin-bottom: 40px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.stage-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stage-nav-item a {
  display: inline-block;
  min-height: 40px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.stage-nav-item a:hover,
.stage-nav-item a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  background-color: var(--accent-soft);
}

.faq-stage {
  padding-bottom: 48px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.stage-head {
  margin-bottom: 24px;
}

.stage-head .section-title {
  font-size: 24px;
  margin-bottom: 10px;
}

.stage-head .section-intro {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.faq-next {
  padding-bottom: 8px;
}

.next-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.next-item {
  padding-top: 16px;
  border-top: 2px solid var(--accent);
}

.next-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.next-title a {
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
}

.next-title a:hover,
.next-title a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.next-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ============================================================
   pages — 404
   ============================================================ */

.error-hero {
  padding-bottom: 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.error-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.error-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-paths .section-title {
  font-size: 22px;
  margin-bottom: 20px;
}

.error-paths .path-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.error-paths .path-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.error-paths .path-item:hover {
  background-color: var(--paper-soft);
  border-color: var(--line-strong);
}

.error-paths .path-item a {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.error-paths .path-item a:hover,
.error-paths .path-item a:focus-visible {
  color: var(--accent);
}

.error-paths .path-note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ============================================================
   responsive
   ============================================================ */

@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .hero-title {
    font-size: 34px;
  }

  .team-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-team .team-group {
    padding: 22px 20px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .section-team .team-group:nth-child(2n) {
    border-right: none;
  }

  .section-team .team-group:nth-last-child(-n + 2) {
    border-bottom: none;
  }

  .section-team .team-group:last-child {
    padding-right: 20px;
  }

  .column-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .prep-list,
  .scene-list,
  .path-list,
  .next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .team-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .team-aside {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 900px) {
  .header-inner {
    padding: 12px 20px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 0 100%;
    justify-content: flex-start;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-link {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
  }

  .nav-link.is-current {
    border-bottom-color: var(--accent);
  }

  .home-main,
  .inner-main {
    padding: 0 20px 56px;
  }

  .error-main {
    padding: 48px 20px 72px;
  }

  .fact-bar-text {
    padding: 10px 20px;
  }

  .footer-inner {
    padding: 40px 20px 28px;
  }

  .footer-copy {
    padding: 16px 20px 24px;
  }

  .hero {
    padding-top: 36px;
  }

  .hero-title {
    font-size: 30px;
  }

  .page-title {
    font-size: 28px;
  }

  .error-title {
    font-size: 28px;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 23px;
  }

  .method-layout,
  .quality-layout,
  .compare-grid,
  .boundary-grid,
  .interface-table {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .method-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .method-name-col {
    padding: 18px 0 4px;
  }

  .method-desc-col {
    padding: 0 0 18px;
    border-top: none;
  }

  .summary-list,
  .quality-standard .standard-list,
  .role-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .team-aside {
    grid-template-columns: minmax(0, 1fr);
  }

  .directions-list .direction-row,
  .direction-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
  }

  .direction-row .direction-enter {
    grid-column: 2 / 3;
  }

  .role-link-item {
    grid-template-columns: 44px minmax(0, 1fr);
  }
}

@media (max-width: 600px) {
  body,
  .site-body {
    font-size: 15px;
  }

  .brand-mark {
    font-size: 19px;
  }

  .brand-sub {
    font-size: 10px;
  }

  .hero-title {
    font-size: 26px;
  }

  .page-title {
    font-size: 24px;
  }

  .hero-actions .btn,
  .error-actions .btn {
    flex: 1 1 auto;
  }

  .hero-catalog {
    padding: 20px 18px 18px;
  }

  .catalog-item {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .column-index {
    grid-template-columns: minmax(0, 1fr);
  }

  .prep-list,
  .scene-list,
  .path-list,
  .next-list,
  .error-paths .path-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-team .team-group {
    padding: 18px 0;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .section-team .team-group:last-child {
    padding-right: 0;
    border-bottom: none;
  }

  .team-groups {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .check-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
  }

  .summary-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .faq-question {
    padding: 16px 34px 16px 0;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 34px 18px 0;
  }

  .stage-nav-item a {
    padding: 8px 12px;
    font-size: 13px;
  }

  .role-card {
    padding: 18px 16px;
  }

  .quality-standard {
    padding: 20px 18px;
  }
}