/* ==========================================================================
   午夜神马影院 · 全站样式
   摄影档案风：灰白画布、细分隔线、窄体标题、等宽元数据
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base：变量、重置、排版基础
   -------------------------------------------------------------------------- */

:root {
  --canvas: #f5f5f3;
  --surface: #ffffff;
  --ink: #24262a;
  --ink-soft: #6b6f76;
  --line: #dfe0dd;
  --accent: #1f3a34;
  --notice: #8a6a3b;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  --wrap: 1080px;
  --radius: 6px;
  --gap: 32px;
}

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

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

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  line-height: 1.3;
  font-weight: 600;
  color: var(--ink);
}

p {
  margin: 0;
}

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

dl,
dt,
dd {
  margin: 0;
}

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

figure {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

strong {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   2. layout：页面骨架、容器、页头、导航、页脚
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
}

/* 顶部信息条（仅首页） */
.topbar {
  background: var(--accent);
  color: #e8ece9;
}

.topbar-text {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 9px 24px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
  text-decoration: none;
}

.brand:hover {
  color: var(--accent);
  text-decoration: none;
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 26px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.4;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-link:hover {
  color: var(--ink);
  text-decoration: none;
}

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

/* 汉堡按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 主容器 */
.site-main {
  flex: 1 0 auto;
  display: block;
  width: 100%;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

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

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

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

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

/* 页面标题区 */
.page-header {
  padding: 18px 0 36px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

.page-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-description {
  margin-top: 14px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.page-lead {
  margin-top: 12px;
  max-width: 760px;
  font-size: 16px;
  color: var(--ink);
}

.page-figure {
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.page-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.page-figure-caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 章节通用 */
.section {
  padding: 0 0 56px;
}

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

.section-head {
  margin-bottom: 26px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.section-desc,
.section-intro {
  margin-top: 10px;
  max-width: 780px;
  font-size: 15px;
  color: var(--ink-soft);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
  margin-bottom: 6px;
}

.section-note {
  margin-top: 22px;
  font-size: 14px;
  color: var(--ink-soft);
}

.section-more {
  margin-top: 22px;
  font-size: 15px;
}

.link-inline,
.text-link,
.inline-link {
  color: var(--accent);
  border-bottom: 1px solid rgba(31, 58, 52, 0.35);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.link-inline:hover,
.text-link:hover,
.inline-link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  text-decoration: none;
}

/* 章节配图 */
.section-media {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.section-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.section-media-caption,
.media-caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 页脚 */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 32px 24px 26px;
}

.footer-back {
  margin-bottom: 26px;
  font-size: 13px;
}

.footer-back-link {
  color: var(--ink-soft);
}

.footer-back-link:hover {
  color: var(--accent);
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

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

.footer-link:hover {
  color: var(--accent);
}

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

.footer-copy {
  padding-top: 20px;
  font-size: 13px;
  color: var(--ink-soft);
}

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 18px;
  line-height: 1;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0.22s ease, border-color 0.18s ease;
}

.back-to-top::before {
  content: "↑";
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  border-color: var(--accent);
}

/* 跳转链接 */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  z-index: 50;
}

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

/* --------------------------------------------------------------------------
   3. components：首页专属模块
   -------------------------------------------------------------------------- */

/* 双通道首屏 */
.hero {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 52px 24px 56px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
  margin-bottom: 14px;
}

.hero-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.hero-lead {
  margin-top: 16px;
  max-width: 560px;
  font-size: 16px;
  color: var(--ink);
}

.hero-note {
  margin-top: 12px;
  max-width: 560px;
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  line-height: 1.4;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--accent);
  color: #f2f5f3;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #162b26;
  text-decoration: none;
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.hero-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--canvas);
}

.hero-media img {
  width: 100%;
  height: 232px;
  object-fit: cover;
}

.hero-media-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.hero-shortcuts {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: var(--canvas);
}

.hero-shortcuts-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

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

.shortcut-link {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink);
}

.shortcut-link:hover {
  color: var(--accent);
  text-decoration: none;
}

/* 服务矩阵行表格 */
.matrix-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.matrix-head,
.matrix-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 0;
  align-items: stretch;
}

.matrix-head {
  background: var(--canvas);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-soft);
}

.matrix-row + .matrix-row,
.matrix-row-head + .matrix-row {
  border-top: 1px solid var(--line);
}

.matrix-cell {
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.7;
  min-width: 0;
}

.matrix-cell + .matrix-cell {
  border-left: 1px solid var(--line);
}

.matrix-cell-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
}

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

.matrix-cell-audience,
.matrix-cell-items {
  color: var(--ink-soft);
}

/* 首页流程阶段条 */
.section-process .stage-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.section-process .stage-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 18px 20px;
}

.section-process .stage-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
  margin-bottom: 8px;
}

.section-process .stage-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.section-process .stage-goal {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.section-process .stage-detail {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.section-process .stage-detail dt {
  font-size: 13px;
  color: var(--notice);
  font-family: var(--font-mono);
}

.section-process .stage-detail dd {
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 8px;
}

.section-process .stage-detail dd:last-child {
  margin-bottom: 0;
}

/* 首页交付标准两栏 */
.standard-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.standard-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 20px 22px 22px;
}

.standard-col-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

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

.standard-col .standard-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  color: var(--ink);
}

.standard-col .standard-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* 首页 FAQ 分组 */
.faq-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.faq-groups .faq-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 8px;
}

.faq-group-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

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

.faq-groups .faq-group-title + .faq-item {
  border-top: 0;
}

.faq-groups .faq-summary {
  position: relative;
  padding: 12px 26px 12px 0;
  font-size: 15px;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-groups .faq-summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 12px;
  font-family: var(--font-mono);
  color: var(--ink-soft);
}

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

.faq-groups .faq-summary:hover {
  color: var(--accent);
}

.faq-groups .faq-answer {
  padding: 0 0 14px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 首页站内页面索引 */
.page-index-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

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

.page-index-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 16px 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease;
}

.page-index-link:hover {
  border-color: var(--accent);
  text-decoration: none;
}

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

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

/* --------------------------------------------------------------------------
   4. pages：内页业务模块
   -------------------------------------------------------------------------- */

/* 服务矩阵：总览表 */
.matrix-row-head {
  background: var(--canvas);
  font-size: 13px;
  color: var(--ink-soft);
}

.section-matrix-overview .matrix-row {
  align-items: stretch;
}

.section-matrix-overview .matrix-row .matrix-cell-name,
.section-matrix-overview .matrix-row .matrix-cell-audience,
.section-matrix-overview .matrix-row .matrix-cell-items {
  margin: 0;
}

/* 服务矩阵：单项字段说明 */
.matrix-detail-block {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 28px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.matrix-detail-block:last-of-type {
  border-bottom: 1px solid var(--line);
}

.matrix-detail-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.matrix-detail-media img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.matrix-detail-caption {
  padding: 9px 12px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.matrix-detail-fields {
  min-width: 0;
}

.matrix-detail-name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.matrix-detail-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
}

.field-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.field-col {
  min-width: 0;
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

.field-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--notice);
  margin-bottom: 6px;
}

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

.field-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 服务矩阵：范围对照 */
.compare-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.compare-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 20px 22px 22px;
}

.compare-col-out {
  background: var(--canvas);
}

.compare-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.compare-col-in .compare-title {
  color: var(--accent);
}

.compare-col-out .compare-title {
  color: var(--notice);
}

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

.compare-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  color: var(--ink);
}

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

.compare-col-out .compare-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--notice);
  font-size: 13px;
}

/* 服务矩阵：选择建议 */
.advice-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.advice-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 20px;
}

.advice-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.advice-text {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 合作流程：四阶段总览条 */
.stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.stage-strip .stage-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 18px 20px;
}

.stage-strip .stage-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
  margin-bottom: 8px;
}

.stage-strip .stage-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.stage-strip .stage-goal {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 合作流程：阶段详情 */
.stage-detail {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.stage-detail:last-of-type {
  border-bottom: 1px solid var(--line);
}

.stage-detail-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.stage-detail-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
}

.stage-detail-name {
  font-size: 20px;
  font-weight: 600;
}

.stage-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 20px;
}

.stage-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.stage-caption {
  padding: 9px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

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

.stage-col {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 16px 18px 18px;
}

.stage-col-yours {
  background: var(--canvas);
}

.stage-col-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.stage-col-ours .stage-col-title {
  color: var(--accent);
}

.stage-col-yours .stage-col-title {
  color: var(--notice);
}

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

.stage-col .stage-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink);
}

.stage-col .stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--ink-soft);
  border-radius: 50%;
}

.stage-node {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-node-label {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  background: rgba(31, 58, 52, 0.08);
  border-radius: 3px;
}

/* 合作流程：卡点 */
.blocker-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.blocker-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 20px;
}

.blocker-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--notice);
}

.blocker-text {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 合作流程：反馈说明 */
.feedback-body {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px 24px 24px;
}

.feedback-text {
  font-size: 15px;
  color: var(--ink);
}

.feedback-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
  margin: 16px 0;
}

.feedback-item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}

.feedback-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* 交付标准：清单 */
.section-standard-list .standard-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.standard-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.standard-item:last-of-type {
  border-bottom: 1px solid var(--line);
}

.standard-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--notice);
  padding-top: 3px;
}

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

.standard-name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.standard-desc {
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 8px;
}

.standard-check {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 交付标准：不承诺范围 */
.no-promise-body {
  border: 1px solid var(--line);
  border-left: 3px solid var(--notice);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 22px 24px 24px;
}

.no-promise-text {
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 14px;
}

.no-promise-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}

.no-promise-item {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}

.no-promise-item::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 13px;
  color: var(--notice);
}

/* 交付标准：反馈路径 */
.feedback-paths {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feedback-path {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 20px;
}

.feedback-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--accent);
}

.feedback-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.feedback-action {
  font-size: 14px;
  color: var(--ink);
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

/* 交付标准：自查要点 */
.selfcheck-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.selfcheck-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 20px;
}

.selfcheck-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.selfcheck-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

/* FAQ 页：分组与折叠 */
.faq-group {
  padding: 0 0 48px;
}

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

.faq-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0 22px;
}

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

.faq-list .faq-item:first-child {
  border-top: 0;
}

.faq-question {
  position: relative;
  padding: 16px 30px 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 16px;
  font-family: var(--font-mono);
  color: var(--ink-soft);
}

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

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

.faq-list .faq-answer {
  padding: 0 0 18px;
  font-size: 15px;
  color: var(--ink-soft);
}

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

/* FAQ 页：后续路径 */
.faq-next {
  padding-top: 44px;
  border-top: 1px solid var(--line);
}

.next-path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.next-path-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px 20px 20px;
}

.next-path-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* --------------------------------------------------------------------------
   5. pages：404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 24px 96px;
}

.error-panel {
  width: 100%;
  max-width: 560px;
  padding: 36px 32px 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  color: var(--notice);
  margin-bottom: 16px;
}

.error-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
}

.error-text {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.error-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--accent);
  border-bottom: 1px solid rgba(31, 58, 52, 0.35);
}

.error-link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   6. responsive：900px / 600px 断点
   -------------------------------------------------------------------------- */

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

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    margin-top: 10px;
    padding: 6px 0;
    border-top: 1px solid var(--line);
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--line);
  }

  .nav-list li:last-child {
    border-bottom: 0;
  }

  .nav-link {
    display: block;
    padding: 12px 2px;
    border-bottom: 0;
  }

  .nav-link.is-current {
    border-bottom: 0;
    color: var(--accent);
  }

  .topbar-text {
    padding: 9px 20px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 36px 20px 44px;
  }

  .hero-side {
    order: 0;
  }

  .section-process .stage-list,
  .stage-strip,
  .advice-list,
  .feedback-paths,
  .next-path-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .matrix-head,
  .matrix-row {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1fr);
  }

  .matrix-cell-items {
    grid-column: 2 / -1;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 10px;
  }

  .matrix-head .matrix-cell-items {
    display: none;
  }

  .matrix-detail-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .matrix-detail-media img {
    height: 210px;
  }

  .inner-main {
    padding: 0 20px 60px;
  }
}

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

  .topbar-text {
    font-size: 12px;
  }

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

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

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

  .hero-media img {
    height: 190px;
  }

  .section-media img,
  .stage-figure img {
    height: 180px;
  }

  .page-figure img {
    height: 180px;
  }

  .matrix-head,
  .matrix-row {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .matrix-cell-audience,
  .matrix-cell-name {
    padding-bottom: 8px;
  }

  .matrix-cell-audience {
    grid-column: 2 / -1;
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 10px;
  }

  .matrix-cell-items {
    grid-column: 2 / -1;
  }

  .matrix-head .matrix-cell-audience,
  .matrix-head .matrix-cell-items {
    display: none;
  }

  .section-process .stage-list,
  .stage-strip,
  .advice-list,
  .feedback-paths,
  .next-path-list,
  .standard-columns,
  .compare-columns,
  .field-pair,
  .stage-columns,
  .blocker-list,
  .feedback-list,
  .no-promise-list,
  .selfcheck-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .standard-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .error-panel {
    padding: 28px 22px 32px;
  }

  .error-code {
    font-size: 34px;
  }

  .error-title {
    font-size: 22px;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
  }
}