/* ==========================================================================
   国产传媒天美 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --ink: #14181c;
  --paper: #f6f4ef;
  --cell: #ffffff;
  --accent: #d9482f;
  --muted: #6b7785;
  --line: #dcd7cc;
  --ink-soft: #2b3138;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1180px;
  --narrow: 820px;
  --gutter: 24px;
  --header-h: 68px;
  --radius: 6px;
}

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
}

h1 {
  font-size: 38px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 15px;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

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

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.16s ease;
}

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

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

figure {
  margin: 0;
}

table {
  border-collapse: collapse;
  width: 100%;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.mono {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.02em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--paper);
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */

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

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cell);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--wrap);
  min-height: var(--header-h);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 44px;
  color: var(--ink);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0;
}

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

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: var(--ink-soft);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--ink);
  border-bottom-color: var(--line);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink);
}

.mobile-nav-panel {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  flex-direction: column;
  padding: 20px var(--gutter) 28px;
  background: var(--paper);
  overflow-y: auto;
}

.mobile-nav-panel[hidden] {
  display: none;
}

.mobile-nav-panel nav {
  flex: 1 1 auto;
}

.mobile-nav-panel ul {
  display: flex;
  flex-direction: column;
}

.mobile-nav-panel .nav-link {
  min-height: 52px;
  padding: 0;
  font-size: 17px;
  border-bottom: 1px solid var(--line);
  border-left: 0;
}

.mobile-nav-panel .nav-link.is-current {
  border-bottom-color: var(--line);
  box-shadow: inset 3px 0 0 var(--accent);
  padding-left: 12px;
}

.mobile-nav-note {
  margin: 20px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.nav-close {
  align-self: flex-start;
  min-height: 44px;
  padding: 0 20px;
  color: var(--ink);
  font-size: 15px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.nav-close:hover {
  background: var(--ink);
  color: var(--paper);
}

.inner-main {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter) 72px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 20px 0 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.breadcrumb a {
  color: var(--muted);
  min-height: 24px;
  display: inline-flex;
  align-items: center;
}

.breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
}

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

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

.breadcrumb-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.breadcrumb-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.breadcrumb-inner .breadcrumb {
  padding: 14px 0;
}

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

.page-title {
  font-size: 38px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
}

.section {
  padding: 56px 0;
}

.section-inner,
.container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

.section-head h2,
.section-title {
  position: relative;
  padding-left: 14px;
  font-size: 24px;
}

.section-head h2::before,
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

.section-desc,
.section-lead {
  max-width: var(--narrow);
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.section-heading {
  position: relative;
  padding-left: 14px;
  font-size: 22px;
}

.section-heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

.section-intro {
  max-width: var(--narrow);
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.narrow-flow,
.narrow {
  max-width: var(--narrow);
}

/* 通用左索引布局：.sidebar-left 位于 .page-layout 自身 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 40px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

.page-layout > .content-column,
.page-layout > .support-body,
.page-layout > .contact-flow-col {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   components · 通用元件
   -------------------------------------------------------------------------- */

.btn,
.btn-primary,
.btn-ghost,
.btn--primary,
.btn--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

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

.btn-primary:hover,
.btn--primary:hover {
  background: #b93a24;
  border-color: #b93a24;
  color: #ffffff;
}

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

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

.text-link,
.link-text,
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

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

.link-arrow::after {
  content: "→";
  font-size: 14px;
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: transparent;
  white-space: nowrap;
}

.status-tag--pending {
  border-color: var(--muted);
  color: var(--muted);
}

.status-tag--active,
.status-tag--ongoing,
.status-tag--open,
.status-tag--progress {
  border-color: var(--accent);
  color: var(--accent);
}

.status-tag--done,
.status-tag--delivered {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.status-tag-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* 图片容器统一约束 */
.media-figure,
.content-media,
.hero-figure,
.about-figure,
.solutions-figure,
.support-figure,
.contact-media,
.guide-media figure {
  position: relative;
  background: #e9e5dc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.media-figure img,
.content-media img,
.hero-figure img,
.about-figure img,
.solutions-figure img,
.support-figure img,
.contact-media img,
.guide-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-caption,
.hero-caption,
figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.media-figure figcaption,
.hero-figure figcaption,
.about-figure figcaption,
.solutions-figure figcaption,
.support-figure figcaption,
.contact-media figcaption,
.guide-media figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: var(--cell);
}

/* 表格通用 */
.compare-table,
.data-table,
.change-table,
.batch-table {
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 15px;
}

.compare-table th,
.compare-table td,
.data-table th,
.data-table td,
.change-table th,
.change-table td,
.batch-table th,
.batch-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
}

.compare-table tr > *:last-child,
.data-table tr > *:last-child,
.change-table tr > *:last-child,
.batch-table tr > *:last-child {
  border-right: 0;
}

.compare-table tbody tr:last-child > *,
.data-table tbody tr:last-child > *,
.change-table tbody tr:last-child > *,
.batch-table tbody tr:last-child > * {
  border-bottom: 0;
}

.compare-table thead th,
.data-table thead th,
.change-table thead th,
.batch-table thead th {
  background: #efece4;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.compare-table tbody th,
.data-table tbody th,
.batch-table tbody th {
  background: #faf8f4;
  color: var(--ink);
  font-weight: 600;
  width: 180px;
}

/* FAQ 折叠 */
.faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 12px 2px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 18px;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 0 18px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

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

.home-main {
  width: 100%;
}

.hero {
  padding: 40px 0 8px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: start;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.hero-copy {
  min-width: 0;
  padding-top: 8px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent);
}

.hero-copy h1 {
  font-size: 40px;
  line-height: 1.28;
  color: var(--ink);
}

.hero-lead {
  max-width: 520px;
  margin: 20px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-visual {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-figure {
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
}

.hero-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.schedule-card {
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.schedule-card-title {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.schedule-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.schedule-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.schedule-code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.schedule-stage {
  min-width: 0;
  color: var(--ink);
  font-size: 14px;
}

.status {
  font-size: 12px;
  padding: 1px 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}

.status-active {
  border-color: var(--accent);
  color: var(--accent);
}

.status-pending {
  border-color: var(--muted);
  color: var(--muted);
}

.status-done {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.content-media-primary {
  max-width: var(--wrap);
  margin: 40px auto 0;
  padding: 0 var(--gutter);
  border: 0;
  background: transparent;
  border-radius: 0;
  overflow: visible;
}

.content-media-primary img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.content-media-primary figcaption {
  padding: 12px 0 0;
  border: 0;
  background: transparent;
}

/* 业务入口横带 */
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--cell);
  border-radius: var(--radius);
  overflow: hidden;
}

.business-item {
  min-width: 0;
  padding: 22px 20px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.business-index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.business-name {
  margin: 0 0 8px;
  font-size: 17px;
}

.business-desc {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.business-cycle {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

/* 常见需求索引 */
.needs-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cell);
  overflow: hidden;
}

.needs-list {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: #faf8f4;
}

.needs-item {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 12px 20px;
  text-align: left;
  color: var(--ink-soft);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: background 0.16s ease, color 0.16s ease;
}

.needs-item:last-child {
  border-bottom: 0;
}

.needs-item:hover {
  background: #f2efe7;
  color: var(--ink);
}

.needs-item.is-active {
  background: var(--cell);
  border-left-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.needs-panels {
  padding: 26px 28px 22px;
  min-width: 0;
}

.needs-panel {
  display: none;
}

.needs-panel.is-active {
  display: block;
}

.needs-panel h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.needs-panel p {
  max-width: 640px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.needs-meta {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 13px;
}

.needs-more {
  margin-top: 20px;
}

.needs-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.needs-more a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 服务方案三栏 */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.solution-col {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 24px 22px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.solution-col h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.solution-scene {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.solution-deliverables {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.solution-deliverables li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.solution-deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.solution-link {
  margin: auto 0 0;
  padding-top: 6px;
}

.solution-link a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.solution-link a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 方案对比 */
.compare-table-wrap {
  overflow-x: auto;
}

.compare-table {
  min-width: 720px;
}

.compare-table td {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.compare-more {
  margin-top: 18px;
}

.compare-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.compare-more a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 交付阶段时间轴 */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.timeline-step {
  position: relative;
  min-width: 0;
  padding: 22px 20px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.timeline-step:first-child {
  border-left: 1px solid var(--line);
}

.timeline-code {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.timeline-step h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

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

.timeline-line {
  display: block;
  width: 100%;
  height: 2px;
  margin-top: 14px;
  background: var(--line);
}

.timeline-step .status-tag {
  margin-top: 12px;
}

.timeline-more {
  margin-top: 18px;
}

.timeline-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.timeline-more a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 排错支持入口 */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.support-card {
  min-width: 0;
  padding: 22px 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.support-symptom {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
}

.support-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.support-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.support-note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.support-band .section-inner {
  padding-top: 0;
}

/* 机构与方法摘要 */
.about-brief .narrow {
  max-width: var(--narrow);
}

.about-brief p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 18px 0 22px;
}

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

.principle-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.about-brief-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.about-brief-more a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* FAQ 区 */
.faq-list {
  display: flex;
  flex-direction: column;
  max-width: var(--narrow);
}

.faq-body {
  color: var(--ink-soft);
}

/* 接洽准备条 */
.contact-strip {
  padding: 0 0 72px;
}

.contact-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 26px 28px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.contact-strip-copy {
  min-width: 0;
  flex: 1 1 380px;
}

.contact-strip-copy p {
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
}

.contact-strip-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   pages · 内页通用标题区
   -------------------------------------------------------------------------- */

.page-title-section,
.page-title-block,
.page-title-area,
.page-head,
.page-hero {
  padding: 18px 0 0;
}

.page-title-inner,
.page-head-inner,
.page-hero-inner {
  max-width: var(--narrow);
}

.page-summary,
.page-head-summary,
.page-hero-summary {
  max-width: var(--narrow);
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.page-kicker,
.page-head-kicker,
.page-hero-eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-status-row,
.page-tags,
.page-head-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.page-tags {
  list-style: none;
}

.page-meta,
.page-head-meta {
  color: var(--muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages · 常见需求 needs
   -------------------------------------------------------------------------- */

.section--questions {
  padding: 40px 0;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: 24px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--cell);
  border-radius: var(--radius);
  overflow: hidden;
}

.question-cell {
  min-width: 0;
  padding: 20px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.question-title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.6;
}

.question-text {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.section--index {
  padding: 40px 0;
}

.section--index .media-figure {
  margin: 24px 0 32px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

.section--index .media-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.needs-layout.page-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.index-column {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.index-heading {
  margin-bottom: 12px;
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

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

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

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

.index-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 10px 8px 12px;
  color: var(--ink-soft);
  font-size: 14px;
  border-left: 3px solid transparent;
}

.index-link:hover {
  color: var(--ink);
  background: #faf8f4;
  border-left-color: var(--line);
}

.index-link.is-active {
  color: var(--ink);
  font-weight: 600;
  border-left-color: var(--accent);
  background: #faf8f4;
}

.index-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.content-column {
  min-width: 0;
}

.need-detail {
  padding: 0 0 32px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.need-detail:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.need-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.need-no {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.need-name {
  margin: 0;
  font-size: 21px;
}

.need-intro {
  max-width: var(--narrow);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.need-block {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.need-block-title {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

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

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

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

.need-entry {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  color: var(--ink);
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.need-entry:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.section--misjudge {
  padding: 40px 0;
}

.misjudge-list {
  display: flex;
  flex-direction: column;
  max-width: var(--narrow);
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.misjudge-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.misjudge-wrong {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.75;
}

.misjudge-wrong::before {
  content: "误判 ";
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.misjudge-fix {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.misjudge-fix::before {
  content: "纠正 ";
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.section--checklist {
  padding: 40px 0;
}

.checklist {
  display: flex;
  flex-direction: column;
  max-width: var(--narrow);
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.check-box {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--muted);
  border-radius: 3px;
}

.checklist-note {
  max-width: var(--narrow);
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.section--next {
  padding: 40px 0 0;
}

.next-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 26px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.next-text {
  flex: 1 1 320px;
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
}

.next-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   pages · 服务方案 solutions
   -------------------------------------------------------------------------- */

.solutions-overview,
.compare-section,
.dimension-notes,
.change-log,
.next-steps,
.guide-timeline,
.guide-stages,
.guide-media,
.guide-batch,
.guide-change,
.guide-accept,
.about-position,
.about-roles,
.about-review,
.about-principles,
.about-boundary,
.next-entry,
.contact-schedule,
.contact-info,
.contact-faq,
.related-bar,
.issue-section,
.scope-section,
.describe-section,
.escalate-section {
  padding: 40px 0;
}

.solutions-overview > *,
.compare-section > *,
.dimension-notes > *,
.change-log > *,
.next-steps > *,
.guide-timeline > *,
.guide-stages > *,
.guide-media > *,
.guide-batch > *,
.guide-change > *,
.guide-accept > *,
.about-roles > *,
.about-review > *,
.about-boundary > *,
.contact-schedule > *,
.contact-info > *,
.contact-faq > *,
.related-bar > * {
  max-width: var(--wrap);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.solutions-overview h2,
.compare-section h2,
.dimension-notes h2,
.change-log h2,
.next-steps h2,
.guide-timeline h2,
.guide-stages h2,
.guide-media h2,
.guide-batch h2,
.guide-change h2,
.guide-accept h2,
.about-roles h2,
.about-review h2,
.about-boundary h2,
.contact-schedule h2,
.contact-info h2,
.contact-faq h2,
.related-bar h2 {
  position: relative;
  padding-left: calc(var(--gutter) + 14px);
  font-size: 24px;
}

.solutions-overview h2::before,
.compare-section h2::before,
.dimension-notes h2::before,
.change-log h2::before,
.next-steps h2::before,
.guide-timeline h2::before,
.guide-stages h2::before,
.guide-media h2::before,
.guide-batch h2::before,
.guide-change h2::before,
.guide-accept h2::before,
.about-roles h2::before,
.about-review h2::before,
.about-boundary h2::before,
.contact-schedule h2::before,
.contact-info h2::before,
.contact-faq h2::before,
.related-bar h2::before {
  content: "";
  position: absolute;
  left: var(--gutter);
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

.solution-band {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.solution-band:last-child {
  border-bottom: 1px solid var(--line);
}

.band-index {
  margin: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding-top: 4px;
}

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

.band-body h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

.band-scene {
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.band-cycle {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.solutions-figure {
  max-width: var(--wrap);
  margin: 8px auto 0;
  padding: 0 var(--gutter);
  border: 0;
  background: transparent;
  border-radius: 0;
  overflow: visible;
}

.solutions-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.solutions-figure figcaption {
  padding: 12px 0 0;
  border: 0;
  background: transparent;
}

.compare-cards {
  display: none;
}

.compare-card {
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 8px;
}

.compare-card h3 {
  margin-bottom: 12px;
  font-size: 17px;
}

.compare-card dl {
  margin: 0;
}

.compare-card dt {
  margin-top: 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.compare-card dd {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.note-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 32px;
  margin-top: 20px;
}

.note-list li {
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.note-list h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.note-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.change-table {
  margin-top: 18px;
}

.change-table td {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 16px;
}

.next-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.next-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 交付指南 guide
   -------------------------------------------------------------------------- */

.page-head-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}

.stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: 22px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--cell);
  border-radius: var(--radius);
  overflow: hidden;
}

.stage-strip-item {
  min-width: 0;
  padding: 18px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stage-strip-code {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.stage-strip-name {
  margin: 0 0 6px;
  font-size: 16px;
}

.stage-strip-note {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.stage-detail {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.stage-detail:last-child {
  border-bottom: 0;
}

.stage-detail-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.stage-detail-code {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.stage-detail-head h3 {
  margin: 0;
  font-size: 20px;
}

.stage-detail-body {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.stage-detail-col {
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.stage-detail-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stage-detail-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stage-detail-list li {
  position: relative;
  padding-left: 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.stage-detail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.stage-detail-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.guide-media .media-figure {
  margin-top: 20px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

.guide-media .media-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.guide-batch .batch-table,
.guide-change .change-table {
  margin-top: 18px;
}

.batch-table td {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.accept-list {
  display: flex;
  flex-direction: column;
  max-width: var(--narrow);
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.accept-list li {
  position: relative;
  padding: 12px 0 12px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.accept-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 12px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 14px;
}

.next-strip {
  padding: 40px 0 0;
}

.next-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 24px 26px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.next-strip-text {
  flex: 1 1 320px;
  margin: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
}

.next-strip-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   pages · 排错支持 support
   -------------------------------------------------------------------------- */

.support-layout {
  padding-top: 32px;
}

.support-index {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-heading {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.support-index-list {
  display: flex;
  flex-direction: column;
}

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

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

.support-index-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 10px 8px 12px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
  border-left: 3px solid transparent;
}

.support-index-link:hover {
  color: var(--ink);
  background: #faf8f4;
  border-left-color: var(--line);
}

.support-index-link.is-active {
  color: var(--ink);
  font-weight: 600;
  background: #faf8f4;
  border-left-color: var(--accent);
}

.support-index-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

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

.support-figure {
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
  margin-bottom: 28px;
}

.support-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.issue-section {
  padding-top: 0;
}

.issue-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.issue-item-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.issue-no {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.issue-item-head h3 {
  margin: 0;
  font-size: 18px;
}

.issue-rows {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 8px 20px;
  margin: 0;
}

.issue-rows dt {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding-top: 3px;
}

.issue-rows dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.scope-col {
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-col--in {
  border-top: 3px solid var(--accent);
}

.scope-col--out {
  border-top: 3px solid var(--muted);
}

.scope-col h3 {
  margin-bottom: 12px;
  font-size: 16px;
}

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

.scope-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

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

.scope-col--out .scope-list li::before {
  background: var(--muted);
}

.describe-list {
  display: flex;
  flex-direction: column;
  max-width: var(--narrow);
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.describe-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.describe-key {
  flex: 0 0 150px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding-top: 4px;
}

.escalate-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.escalate-step {
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.escalate-no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.escalate-step h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.escalate-step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.related-bar {
  padding: 40px 0 0;
}

.related-text {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.related-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  max-width: var(--wrap);
  margin: 16px auto 0;
  padding: 0 var(--gutter);
}

/* --------------------------------------------------------------------------
   pages · 机构与方法 about
   -------------------------------------------------------------------------- */

.about-position {
  padding: 32px 0;
}

.about-position .narrow-flow {
  max-width: var(--narrow);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.about-position h2 {
  position: relative;
  padding-left: 14px;
  margin-bottom: 14px;
  font-size: 24px;
}

.about-position h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

.about-position p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.about-figure {
  max-width: var(--wrap);
  margin: 24px auto 0;
  padding: 0 var(--gutter);
  border: 0;
  background: transparent;
  border-radius: 0;
  overflow: visible;
}

.about-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.about-figure figcaption {
  padding: 12px 0 0;
  border: 0;
  background: transparent;
}

.roles-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.role-col {
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.role-index {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.role-col h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.role-col p {
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.role-handoff {
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.review-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: 20px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--cell);
  border-radius: var(--radius);
  overflow: hidden;
}

.review-step {
  min-width: 0;
  padding: 18px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.step-no {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.review-step h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.review-step p {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.step-output {
  color: var(--muted);
  font-size: 13px;
}

.about-principles .narrow-flow {
  max-width: var(--narrow);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.about-principles h2 {
  position: relative;
  padding-left: 14px;
  margin-bottom: 12px;
  font-size: 24px;
}

.about-principles h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

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

.boundary-col {
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-col h3 {
  margin-bottom: 12px;
  font-size: 16px;
}

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

.boundary-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

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

.next-entry {
  padding: 40px 0 0;
}

.next-entry-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 24px 26px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.next-entry-text {
  flex: 1 1 340px;
  min-width: 0;
}

.next-entry-text h2 {
  margin-bottom: 8px;
  font-size: 20px;
}

.next-entry-text p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.next-entry-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* --------------------------------------------------------------------------
   pages · 合作接洽 contact
   -------------------------------------------------------------------------- */

.contact-layout {
  padding-top: 32px;
}

.contact-checklist {
  min-width: 0;
}

.contact-checklist h2,
.contact-flow-col h2 {
  position: relative;
  padding-left: 14px;
  margin-bottom: 10px;
  font-size: 22px;
}

.contact-checklist h2::before,
.contact-flow-col h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.32em;
  width: 3px;
  height: 1.05em;
  background: var(--accent);
}

.contact-checklist .checklist {
  margin-top: 16px;
}

.contact-checklist .checklist-item {
  gap: 14px;
}

.checklist-box {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  border: 1px solid var(--muted);
  border-radius: 3px;
}

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

.checklist-body h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.checklist-body p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.contact-flow-col {
  min-width: 0;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.flow-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.flow-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
}

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

.flow-body h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.flow-body p {
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.flow-body p:last-child {
  color: var(--muted);
}

.contact-media {
  max-width: var(--wrap);
  margin: 8px auto 0;
  padding: 0 var(--gutter);
  border: 0;
  background: transparent;
  border-radius: 0;
  overflow: visible;
}

.contact-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact-media figcaption {
  padding: 12px 0 0;
  border: 0;
  background: transparent;
}

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.schedule-item {
  min-width: 0;
  padding: 20px;
  background: var(--cell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.schedule-item h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.schedule-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.info-body {
  max-width: var(--narrow);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

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

.contact-faq .faq-item {
  max-width: var(--narrow);
}

.contact-faq .faq-item:first-of-type {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 16px;
  max-width: var(--wrap);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--gutter);
}

.related-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.related-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 0;
}

.error-inner {
  width: 100%;
  max-width: var(--narrow);
  padding: 0 var(--gutter);
}

.error-code {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

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

.error-text {
  max-width: 560px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.85;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.error-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.error-links-title {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.error-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.error-link-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.error-link-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --------------------------------------------------------------------------
   layout · 页脚
   -------------------------------------------------------------------------- */

.site-footer {
  flex: 0 0 auto;
  margin-top: 64px;
  background: var(--ink);
  color: #d8d4cb;
  font-size: 14px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 40px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px var(--gutter) 36px;
}

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

.footer-brand-mark {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: 19px;
  font-weight: 600;
}

.footer-slogan {
  margin: 0 0 12px;
  color: #e6e2d9;
  font-size: 14px;
  line-height: 1.8;
}

.footer-note {
  margin: 0;
  color: #9aa3ac;
  font-size: 13px;
  line-height: 1.8;
}

.footer-heading {
  margin: 0 0 14px;
  color: #ffffff;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: #d8d4cb;
  font-size: 14px;
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter) 26px;
  border-top: 1px solid #2c3238;
}

.footer-copyright {
  margin: 0;
  color: #9aa3ac;
  font-size: 13px;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #d8d4cb;
  font-size: 13px;
}

.back-to-top:hover {
  color: #ffffff;
  text-decoration: underline;
}

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

@media (max-width: 1200px) {
  .hero-inner {
    gap: 36px;
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .note-list {
    gap: 18px 24px;
  }

  .footer-inner {
    gap: 32px;
  }
}

@media (max-width: 960px) {
  :root {
    --gutter: 20px;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-copy h1 {
    font-size: 32px;
  }

  .hero-lead {
    max-width: none;
  }

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

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

  .needs-list {
    flex-direction: row;
    flex-wrap: wrap;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .needs-item {
    flex: 1 1 33.333%;
    justify-content: center;
    text-align: center;
    border-bottom: 1px solid var(--line);
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .needs-item.is-active {
    border-left: 0;
    border-bottom-color: var(--accent);
  }

  .solutions-grid,
  .support-grid,
  .schedule-grid,
  .escalate-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline,
  .stage-strip,
  .review-steps,
  .roles-grid,
  .question-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline-step:first-child {
    border-left: 0;
  }

  .timeline-step:nth-child(odd) {
    border-left: 1px solid var(--line);
  }

  .stage-detail-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-layout,
  .page-layout.sidebar-left,
  .needs-layout.page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .index-column,
  .support-index {
    position: static;
  }

  .index-list,
  .support-index-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .index-list li,
  .support-index-list li {
    flex: 1 1 45%;
    border-bottom: 1px solid var(--line);
  }

  .index-link,
  .support-index-link {
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .index-link.is-active,
  .support-index-link.is-active {
    border-left: 0;
    border-bottom-color: var(--accent);
  }

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

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 28px;
    padding-top: 40px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }

  h1,
  .page-title {
    font-size: 28px;
  }

  .hero-copy h1 {
    font-size: 28px;
  }

  h2,
  .section-head h2,
  .section-title,
  .solutions-overview h2,
  .compare-section h2,
  .dimension-notes h2,
  .change-log h2,
  .next-steps h2,
  .guide-timeline h2,
  .guide-stages h2,
  .guide-media h2,
  .guide-batch h2,
  .guide-change h2,
  .guide-accept h2,
  .about-roles h2,
  .about-review h2,
  .about-boundary h2,
  .contact-schedule h2,
  .contact-info h2,
  .contact-faq h2,
  .related-bar h2,
  .about-position h2,
  .about-principles h2 {
    font-size: 20px;
  }

  .section {
    padding: 40px 0;
  }

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

  .business-item {
    border-right: 0;
  }

  .needs-item {
    flex: 1 1 100%;
    justify-content: flex-start;
    text-align: left;
    padding-left: 16px;
  }

  .needs-panels {
    padding: 20px 18px;
  }

  .solutions-grid,
  .support-grid,
  .schedule-grid,
  .escalate-steps,
  .timeline,
  .stage-strip,
  .review-steps,
  .roles-grid,
  .question-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .timeline-step,
  .stage-strip-item,
  .review-step,
  .question-cell {
    border-left: 1px solid var(--line);
  }

  .timeline-step {
    border-left: 0;
  }

  .timeline-step:nth-child(odd) {
    border-left: 0;
  }

  .stage-detail-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .schedule-row {
    grid-template-columns: 88px minmax(0, 1fr);
    row-gap: 4px;
  }

  .schedule-row .status {
    grid-column: 2;
    justify-self: start;
  }

  /* 对比表：小屏切换为逐方案卡片，不做横向压缩 */
  .compare-table-wrap {
    display: none;
  }

  .compare-cards {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    margin-top: 20px;
  }

  .compare-section .compare-table {
    display: none;
  }

  .compare-section .compare-cards {
    display: grid;
  }

  .issue-rows {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .issue-rows dt {
    padding-top: 8px;
  }

  .need-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .describe-list li {
    flex-direction: column;
    gap: 4px;
  }

  .describe-key {
    flex: 0 0 auto;
  }

  .solution-band {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .contact-strip-inner,
  .next-bar,
  .next-strip-inner,
  .next-entry-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px 20px;
  }

  .contact-strip-actions,
  .next-actions,
  .next-strip-actions,
  .next-entry-actions {
    width: 100%;
  }

  .contact-strip-actions .btn,
  .contact-strip-actions .btn-primary,
  .next-actions .btn,
  .next-actions .btn--primary,
  .next-actions .btn--ghost,
  .next-strip-actions .btn-primary,
  .next-strip-actions .link-arrow,
  .next-entry-actions .btn-primary,
  .next-entry-actions .link-arrow {
    flex: 1 1 auto;
    justify-content: center;
  }

  .flow-step {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 12px;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  :root {
    --gutter: 16px;
  }

  .header-inner {
    gap: 12px;
  }

  .brand-mark {
    font-size: 17px;
  }

  .hero {
    padding-top: 28px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

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

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .error-actions .btn-primary {
    width: 100%;
  }

  .next-links,
  .related-links,
  .error-link-list {
    flex-direction: column;
    gap: 4px;
  }

  .next-links a,
  .related-links a,
  .error-link-list a {
    border-bottom: 1px solid var(--line);
  }

  .compare-table {
    min-width: 0;
  }

  .content-media-primary img,
  .solutions-figure img,
  .about-figure img,
  .contact-media img {
    aspect-ratio: 4 / 3;
  }
}