/* ==========================================================================
   午夜私人影院 · 整站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --bg: #ffffff;
  --ink: #16181a;
  --ink-soft: #5c6166;
  --line: #e2e4e6;
  --dark: #101214;
  --accent: #b0121a;
  --surface: #f5f6f7;
  --radius: 6px;
  --shell: 1180px;
  --reading: 760px;
  --gap: 32px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: normal;
}

p {
  margin: 0;
}

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

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

a {
  color: var(--ink);
  text-decoration: none;
}

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

figure {
  margin: 0;
}

dl,
dd,
dt {
  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;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(6px);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: padding 0.22s ease;
}

.site-header.is-condensed .header-inner {
  padding: 10px 28px;
}

.brand {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

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

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.nav-link.is-current {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

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

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px 72px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--dark);
  color: #ffffff;
  border-radius: var(--radius);
  z-index: 60;
}

.skip-link:focus {
  left: 16px;
  top: 12px;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   components · 通用块
   -------------------------------------------------------------------------- */

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section-title {
  font-size: 25px;
  color: var(--ink);
}

.section-lead,
.section-intro {
  margin-top: 12px;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.8;
}

.section-head {
  margin-bottom: 32px;
}

.section-foot {
  margin-top: 28px;
}

.section-more {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 15px;
}

.section-note {
  margin-top: 10px;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 15px;
}

.subsection-title {
  font-size: 17px;
  color: var(--ink);
}

.text-link {
  display: inline-block;
  font-size: 15px;
  color: var(--accent);
  border-bottom: 1px solid rgba(176, 18, 26, 0.35);
  padding-bottom: 1px;
  transition: border-color 0.18s ease;
}

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

.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: 600;
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease,
    border-color 0.18s ease;
}

.btn-primary {
  background: var(--dark);
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent);
  color: #ffffff;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 26px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

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

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

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

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

.page-header {
  padding: 22px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 32px;
  color: var(--ink);
}

.page-description {
  margin-top: 14px;
  max-width: var(--reading);
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.media-figure {
  margin: 0 0 30px;
}

.media-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

.media-figure figcaption {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* 字段说明表 */
.field-table {
  border-top: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 8px 28px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.field-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

/* 编号清单 */
.check-list {
  counter-reset: check;
  border-top: 1px solid var(--line);
}

.check-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.check-num,
.checklist-index {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.9;
}

.check-title {
  font-size: 17px;
  color: var(--ink);
}

.check-text {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.check-note {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 15px;
}

.inline-aside {
  margin-top: 28px;
  padding: 20px 22px;
  background: var(--surface);
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

/* 双栏说明 */
.split-columns,
.boundary-columns,
.timing-columns,
.unresolved-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.column-block,
.boundary-col,
.timing-col,
.unresolved-col {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.detail-list,
.plain-list,
.boundary-points,
.timing-list {
  margin-top: 14px;
}

.detail-list li,
.plain-list li,
.boundary-points li,
.timing-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.detail-list li:last-child,
.plain-list li:last-child,
.boundary-points li:last-child,
.timing-list li:last-child {
  margin-bottom: 0;
}

.detail-list li::before,
.plain-list li::before,
.boundary-points li::before,
.timing-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--ink-soft);
}

/* 相关推荐 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.related-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.related-card:hover {
  border-color: var(--ink-soft);
  transform: translateY(-2px);
}

.related-title {
  font-size: 17px;
}

.related-text {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   components · 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--dark);
  color: #d7d9db;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 52px 28px 34px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-group-title {
  font-size: 15px;
  color: #ffffff;
}

.footer-list {
  margin-top: 14px;
}

.footer-list li {
  margin-bottom: 9px;
}

.footer-list a {
  font-size: 14px;
  color: #b6babd;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: #ffffff;
}

.footer-summary {
  padding: 30px 0 24px;
  max-width: var(--reading);
}

.footer-brand {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
}

.footer-text {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: #a9adb0;
}

.footer-boundary {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-note {
  max-width: var(--reading);
  font-size: 13.5px;
  line-height: 1.85;
  color: #8f9396;
}

.footer-copy {
  margin-top: 14px;
  font-size: 13px;
  color: #7c8083;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

.hero-section {
  padding: 54px 0 0;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 44px;
  align-items: start;
}

.hero-intro {
  min-width: 0;
}

.hero-eyebrow {
  font-size: 13.5px;
  color: var(--accent);
  font-weight: 600;
}

.hero-title {
  margin-top: 14px;
  font-size: 40px;
  line-height: 1.25;
}

.hero-lead {
  margin-top: 18px;
  max-width: 520px;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.hero-catalog {
  margin-top: 30px;
}

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

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

.catalog-link {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 6px 20px;
  padding: 14px 4px;
  transition: background-color 0.18s ease, padding-left 0.18s ease;
}

.catalog-link:hover,
.catalog-link:focus-visible {
  background: var(--surface);
  padding-left: 12px;
}

.catalog-name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.catalog-desc {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.hero-media {
  min-width: 0;
}

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

.hero-caption {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.hero-action {
  margin-top: 40px;
  padding: 24px 26px;
  background: var(--surface);
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
}

.hero-action-text {
  flex: 1 1 320px;
  min-width: 0;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.hero-action-links,
.consult-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.content-media {
  margin-top: 48px;
}

.content-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

.content-media figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* 首页 · 服务方向条目行 */
.direction-list {
  border-top: 1px solid var(--line);
}

.direction-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 14px 40px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease, padding-left 0.18s ease;
}

.direction-row:hover {
  background: var(--surface);
  padding-left: 14px;
}

.direction-main,
.direction-side {
  min-width: 0;
}

.direction-name {
  font-size: 19px;
}

.direction-audience {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

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

.direction-side .text-link {
  margin-top: 12px;
}

/* 首页 · 方案摘要双栏 */
.scheme-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.scheme-column {
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scheme-title {
  font-size: 19px;
}

.scheme-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.scheme-list {
  margin-top: 18px;
}

.scheme-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.8;
}

.scheme-list li:last-child {
  margin-bottom: 0;
}

.scheme-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.scheme-column .text-link {
  margin-top: 18px;
}

/* 首页 · 流程三步 */
.flow-list {
  border-top: 1px solid var(--line);
}

.flow-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 20px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--line);
}

.flow-index {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.9;
}

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

.flow-name {
  font-size: 18px;
}

.flow-prep {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.flow-result {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.8;
}

/* 首页 · 常见问题摘要 */
.faq-preview-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.faq-preview-item {
  min-width: 0;
  padding: 22px 24px;
  background: var(--surface);
  border-radius: var(--radius);
}

.faq-preview-q {
  font-size: 16.5px;
}

.faq-preview-a {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.consult-bar {
  margin-top: 34px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
}

.consult-text {
  flex: 1 1 340px;
  min-width: 0;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   pages · 服务方向
   -------------------------------------------------------------------------- */

.service-block {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 34px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}

.service-block:first-of-type {
  border-top: 1px solid var(--line);
}

.service-media {
  min-width: 0;
}

.service-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

.service-caption {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

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

.service-name {
  font-size: 22px;
}

.service-fit {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.service-columns {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

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

.service-col-title {
  font-size: 15.5px;
  color: var(--ink);
}

.service-points {
  margin-top: 12px;
}

.service-points li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 9px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.service-points li:last-child {
  margin-bottom: 0;
}

.service-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--ink-soft);
}

.section-services-list .section-title,
.section-services-list .section-intro {
  margin-bottom: 0;
}

.checklist {
  border-top: 1px solid var(--line);
}

.checklist-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

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

.section-consult .section-text {
  margin-top: 14px;
  max-width: var(--reading);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.9;
}

.section-consult .section-text a {
  color: var(--accent);
  border-bottom: 1px solid rgba(176, 18, 26, 0.35);
}

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

/* --------------------------------------------------------------------------
   pages · 合作流程
   -------------------------------------------------------------------------- */

.stage-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}

.stage-index-item {
  min-width: 0;
}

.stage-index-link {
  display: block;
  height: 100%;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.stage-index-link:hover,
.stage-index-link:focus-visible {
  border-color: var(--ink-soft);
  transform: translateY(-2px);
}

.stage-index-num {
  display: block;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}

.stage-index-name {
  display: block;
  margin-top: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.stage-index-desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.stage-block {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}

.stage-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.stage-num {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.stage-name {
  font-size: 21px;
}

.stage-summary {
  margin-top: 12px;
  max-width: var(--reading);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.stage-columns {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.stage-col {
  min-width: 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stage-col-client {
  background: var(--bg);
}

.stage-col-service {
  background: var(--surface);
  border-color: var(--surface);
}

.stage-col-title {
  font-size: 15.5px;
}

.stage-list {
  margin-top: 14px;
}

.stage-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.stage-list li:last-child {
  margin-bottom: 0;
}

.stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--ink-soft);
}

.stage-figure {
  margin-top: 26px;
}

.stage-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

.stage-figure-caption {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.timing-note {
  margin-top: 24px;
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   pages · 场地与设备
   -------------------------------------------------------------------------- */

.space-section {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.space-section:first-of-type {
  border-top: 1px solid var(--line);
}

.space-section .section-title + .section-intro {
  margin-bottom: 26px;
}

.space-source .split-columns {
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   pages · 常见问题
   -------------------------------------------------------------------------- */

.faq-visual {
  margin: 34px 0 0;
}

.faq-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--surface);
}

.faq-visual figcaption {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.faq-group {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

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

.faq-item {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  transition: border-color 0.18s ease;
}

.faq-item[open] {
  border-color: var(--ink-soft);
}

.faq-question {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 11px;
  height: 11px;
  margin-top: -7px;
  border-right: 2px solid var(--ink-soft);
  border-bottom: 2px solid var(--ink-soft);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  margin-top: -3px;
}

.faq-answer {
  padding: 0 22px 20px;
}

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

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

.faq-unresolved {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.faq-unresolved .unresolved-columns {
  margin-top: 24px;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px 80px;
}

.error-block {
  padding: 74px 0 48px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}

.error-title {
  margin-top: 14px;
  font-size: 34px;
}

.error-text {
  margin-top: 16px;
  max-width: 620px;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.error-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  padding: 48px 0 0;
}

.error-link-list {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.error-link-list a {
  display: block;
  height: 100%;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.error-link-list a:hover,
.error-link-list a:focus-visible {
  border-color: var(--ink-soft);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
  .header-inner {
    padding: 14px 20px;
    gap: 16px;
  }

  .site-header.is-condensed .header-inner {
    padding: 10px 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 16px;
  }

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

  .nav-link {
    display: block;
    padding: 13px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
  }

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

  .inner-main,
  .error-main {
    padding-left: 20px;
    padding-right: 20px;
    padding-bottom: 60px;
  }

  .hero-section {
    padding-top: 40px;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-media img {
    aspect-ratio: 16 / 10;
  }

  .direction-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .scheme-columns,
  .split-columns,
  .boundary-columns,
  .timing-columns,
  .unresolved-columns,
  .service-columns,
  .stage-columns,
  .faq-preview-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 32px 0;
  }

  .service-media img {
    aspect-ratio: 16 / 9;
  }

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

  .field-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 6px 20px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15.5px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .site-header.is-condensed .header-inner {
    padding: 9px 16px;
  }

  .brand {
    font-size: 17px;
  }

  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-section {
    padding-top: 30px;
  }

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

  .hero-lead {
    font-size: 15px;
  }

  .hero-action,
  .consult-bar {
    padding: 20px;
  }

  .hero-action-links .btn,
  .consult-links .btn {
    flex: 1 1 100%;
  }

  .catalog-link {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 13px 2px;
  }

  .catalog-link:hover,
  .catalog-link:focus-visible {
    padding-left: 8px;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 21px;
  }

  .page-header {
    padding: 18px 0 26px;
  }

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

  .page-description {
    font-size: 15px;
  }

  .breadcrumb {
    padding-top: 20px;
    font-size: 13px;
  }

  .direction-row {
    padding: 20px 2px;
  }

  .direction-row:hover {
    padding-left: 8px;
  }

  .scheme-column,
  .column-block,
  .boundary-col,
  .timing-col,
  .unresolved-col,
  .stage-col {
    padding: 20px;
  }

  .flow-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
    padding: 20px 2px;
  }

  .check-item,
  .checklist-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
  }

  .field-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 15px 0;
  }

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

  .stage-block {
    padding: 28px 0;
  }

  .stage-name {
    font-size: 19px;
  }

  .service-name {
    font-size: 20px;
  }

  .faq-question {
    padding: 16px 46px 16px 18px;
    font-size: 15.5px;
  }

  .faq-question::after {
    right: 18px;
  }

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

  .faq-group {
    padding: 34px 0;
  }

  .faq-group .section-title {
    font-size: 20px;
  }

  .faq-unresolved {
    padding: 36px 0;
  }

  .error-block {
    padding: 48px 0 36px;
  }

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

  .footer-inner {
    padding: 40px 16px 28px;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding-bottom: 26px;
  }

  .footer-summary {
    padding: 24px 0 20px;
  }

  .inline-aside {
    padding: 18px;
  }
}

@media print {
  .site-header,
  .site-nav,
  .nav-toggle,
  .breadcrumb,
  .skip-link,
  .hero-action,
  .consult-bar,
  .error-actions,
  .site-footer {
    display: none !important;
  }

  body {
    color: #000000;
    background: #ffffff;
  }

  .section,
  .stage-block,
  .service-block,
  .space-section,
  .faq-group {
    break-inside: avoid;
  }
}