/* =========================================================
   飘花网 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------------------------------------------------------
   base：变量、重置、排版基础
   --------------------------------------------------------- */
:root {
  --ink: #1c2b3a;
  --ink-soft: #4a5b6b;
  --paper: #faf8f5;
  --paper-alt: #f1ede7;
  --line: #d8d2c8;
  --accent: #8a5a3b;
  --accent-soft: #c9a98c;
  --white: #ffffff;

  --font-serif: Georgia, "Songti SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --width-wide: 1120px;
  --width-read: 760px;
  --radius: 6px;
  --gap: 28px;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

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

p {
  margin: 0;
}

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

dl,
dt,
dd {
  margin: 0;
}

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

a:hover,
a:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

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

/* ---------------------------------------------------------
   layout：页头 / 主容器 / 内页骨架 / 页脚
   --------------------------------------------------------- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

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

.brand {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: 0;
}

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

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

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

.nav-list > li {
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
}

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

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
}

.nav-toggle::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 12px;
  width: 18px;
  height: 2px;
  background-color: var(--ink);
  box-shadow: 0 6px 0 var(--ink), 0 12px 0 var(--ink);
}

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

.home-main {
  display: block;
}

.inner-main {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 28px 24px 64px;
}

.breadcrumb {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--accent-soft);
}

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

.page-header {
  max-width: var(--width-read);
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

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

.page-description {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-description a {
  color: var(--accent);
}

.site-footer {
  background-color: var(--paper-alt);
  border-top: 1px solid var(--accent-soft);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 44px 24px 32px;
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 40px;
}

.footer-brand .footer-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

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

.footer-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px;
}

.footer-group-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
}

.footer-list li {
  margin-bottom: 6px;
}

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

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

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

.footer-copy {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 18px 24px;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------
   components：通用按钮、区块、列表、时间线、折叠
   --------------------------------------------------------- */
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

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

.section-inner {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.section-head {
  max-width: var(--width-read);
  margin-bottom: 32px;
}

.section-title {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 12px;
}

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

.section-desc a {
  color: var(--accent);
}

.section-more {
  margin-top: 26px;
  font-size: 15px;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  color: var(--accent);
  font-weight: 600;
}

.link-more::after {
  content: "→";
  font-size: 15px;
}

.link-more:hover,
.link-more:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  text-decoration: none;
}

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

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

/* 编号式全宽行列表（服务方向 / 场景索引） */
.direction-list,
.capability-list,
.scenario-index {
  border-top: 1px solid var(--line);
}

.direction-row,
.capability-row,
.scenario-index-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) minmax(120px, 180px);
  align-items: start;
  gap: 20px;
  padding: 20px 8px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.direction-row:hover,
.capability-row:hover {
  background-color: var(--paper-alt);
}

.direction-no,
.capability-num,
.scenario-num {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
  padding-top: 2px;
}

.direction-name,
.capability-name,
.scenario-index-name {
  font-size: 18px;
  margin-bottom: 6px;
}

.direction-summary,
.capability-scope,
.scenario-index-desc {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.capability-method {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.direction-owner,
.capability-role {
  font-size: 14px;
  color: var(--accent);
  text-align: right;
  line-height: 1.7;
}

/* 阶段时间线（首页 / 交付体系页） */
.stage-timeline {
  display: grid;
  gap: 0;
  border-left: 2px solid var(--accent-soft);
  margin-left: 8px;
}

.stage-item {
  position: relative;
  padding: 0 0 30px 28px;
}

.stage-item:last-child {
  padding-bottom: 0;
}

.stage-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--paper);
  border: 2px solid var(--accent-soft);
}

.stage-no,
.stage-index {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}

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

.stage-goal {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 640px;
}

.stage-output {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-fields {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 6px 16px;
  font-size: 14px;
}

.stage-fields dt {
  color: var(--accent);
  font-weight: 600;
}

.stage-fields dd {
  color: var(--ink-soft);
  line-height: 1.75;
}

/* 勾选式列表 */
.check-list {
  display: grid;
  gap: 12px;
}

.check-item {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.check-item::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 600;
}

/* 双栏与多栏 */
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

.col-title {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

/* 常见问题折叠列表 */
.faq-list {
  border-top: 1px solid var(--line);
}

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

.faq-question {
  display: block;
  position: relative;
  padding: 16px 40px 16px 0;
  min-height: 44px;
  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: 6px;
  top: 14px;
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
}

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

.faq-item[open] .faq-question {
  color: var(--accent);
}

.faq-answer {
  padding: 0 40px 18px 0;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* 相关页面链接列表 */
.link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 24px;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--accent);
}

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

/* 图片容器统一约束 */
.hero-figure,
.method-media,
.page-media,
.page-figure,
.section-media,
.media-figure {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--paper-alt);
}

.hero-figure img,
.method-media img,
.page-media img,
.page-figure img,
.section-media img,
.media-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.method-caption,
.media-caption,
.page-figure-caption,
.page-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  background-color: var(--paper-alt);
  line-height: 1.7;
}

/* ---------------------------------------------------------
   pages：首页
   --------------------------------------------------------- */
.hero {
  border-bottom: 1px solid var(--line);
  padding: 56px 0 60px;
}

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

.hero-lead {
  max-width: 520px;
}

.hero-eyebrow {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}

.hero-title {
  font-size: 34px;
  line-height: 1.32;
  margin-bottom: 16px;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.hero-side {
  display: grid;
  gap: 24px;
}

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

.hero-timeline {
  background-color: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.hero-timeline-title {
  font-size: 18px;
  margin-bottom: 16px;
}

.progress-track {
  display: grid;
  gap: 14px;
  border-left: 2px solid var(--accent-soft);
  padding-left: 20px;
}

.progress-item {
  position: relative;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.progress-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--paper);
  border: 2px solid var(--accent-soft);
}

.progress-item.is-current {
  color: var(--ink);
  font-weight: 600;
}

.progress-item.is-current::before {
  background-color: var(--accent);
  border-color: var(--accent);
}

.progress-date {
  display: block;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 2px;
}

.progress-text {
  display: block;
}

/* 首页：质量体系双栏 */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

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

.quality-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 14px;
}

.quality-figure {
  margin-top: 18px;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--paper-alt);
  aspect-ratio: 16 / 9;
}

.quality-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 首页：适用场景三列 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.scenario-col {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
}

.scenario-name {
  font-size: 18px;
  margin-bottom: 12px;
}

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

.scenario-fit {
  font-size: 14px;
  color: var(--accent);
  line-height: 1.75;
}

/* 首页：常见问题分组 */
.faq-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.faq-group {
  min-width: 0;
}

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

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

.faq-group .faq-question {
  font-size: 15px;
}

/* 首页：合作对接准备 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

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

.prepare-list {
  display: grid;
  gap: 12px;
}

.prepare-item {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.prepare-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-soft);
}

.contact-steps {
  display: grid;
  gap: 16px;
}

.contact-step {
  border-left: 2px solid var(--accent-soft);
  padding-left: 16px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.contact-more {
  margin-top: 24px;
  font-size: 15px;
}

/* ---------------------------------------------------------
   pages：核心能力
   --------------------------------------------------------- */
.page-capability .section-capability-overview .section-head,
.page-capability .section-method .section-head,
.page-capability .section-team .section-head,
.page-capability .section-scope .section-head {
  max-width: var(--width-read);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 40px;
  align-items: start;
}

.method-media {
  aspect-ratio: 4 / 3;
}

.method-lists {
  display: grid;
  gap: 22px;
}

.method-item {
  border-left: 2px solid var(--accent-soft);
  padding-left: 18px;
  min-width: 0;
}

.method-name {
  font-size: 18px;
  margin-bottom: 8px;
}

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

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

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

.team-role {
  font-size: 18px;
  margin-bottom: 12px;
}

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

.team-coop {
  font-size: 14px;
  color: var(--accent);
  line-height: 1.75;
}

.scope-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.scope-part {
  background-color: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  min-width: 0;
}

.scope-title {
  font-size: 18px;
  margin-bottom: 12px;
}

.scope-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 10px;
}

/* ---------------------------------------------------------
   pages：交付体系
   --------------------------------------------------------- */
.page-media {
  aspect-ratio: 21 / 9;
  margin-bottom: 40px;
}

.detail-columns {
  align-items: start;
}

.col-stage-list {
  min-width: 0;
}

.stage-list {
  display: grid;
  gap: 10px;
}

.stage-list-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
  font-size: 15px;
  color: var(--ink);
}

.stage-list-index {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.col-stage-info {
  min-width: 0;
}

.stage-block {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.stage-block:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.stage-block-title {
  font-size: 18px;
  margin-bottom: 10px;
}

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

.quality-columns {
  align-items: start;
}

.col-checkpoints,
.col-deliverables {
  min-width: 0;
}

.col-deliverables p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 12px;
}

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

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

.boundary-include {
  background-color: var(--white);
}

.boundary-exclude {
  background-color: var(--paper-alt);
}

.boundary-title {
  font-size: 18px;
  margin-bottom: 14px;
}

.boundary-list {
  display: grid;
  gap: 10px;
}

.boundary-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.boundary-include .boundary-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

.boundary-exclude .boundary-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent-soft);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.related-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
}

.related-item a {
  display: flex;
  align-items: center;
  min-height: 60px;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--ink);
}

.related-item a:hover,
.related-item a:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

/* ---------------------------------------------------------
   pages：适用场景
   --------------------------------------------------------- */
.page-layout {
  display: block;
}

.scenario-index-row {
  grid-template-columns: 56px minmax(0, 1fr);
}

.section-media {
  aspect-ratio: 21 / 9;
  margin-bottom: 32px;
}

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

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

.needs-list {
  display: grid;
  gap: 12px;
}

.needs-item {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.needs-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-soft);
}

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

.mapping-row {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(140px, 220px) minmax(0, 1fr);
  gap: 20px;
  padding: 16px 8px;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.mapping-head {
  background-color: var(--paper-alt);
}

.mapping-head .mapping-cell {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.mapping-cell {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  min-width: 0;
}

.cell-scenario {
  color: var(--ink);
  font-weight: 600;
}

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

.prereq-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  min-width: 0;
}

.prereq-title {
  font-size: 18px;
  margin-bottom: 10px;
}

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

/* ---------------------------------------------------------
   pages：常见问题
   --------------------------------------------------------- */
.page-figure {
  aspect-ratio: 21 / 9;
  margin-bottom: 40px;
}

.faq-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

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

.section-index {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.faq-next {
  padding: 40px 0 8px;
}

.faq-next-text {
  max-width: var(--width-read);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin: 12px 0 24px;
}

.faq-next-text a {
  color: var(--accent);
}

/* ---------------------------------------------------------
   pages：合作对接
   --------------------------------------------------------- */
.media-figure {
  aspect-ratio: 21 / 9;
}

.section-contact-visual {
  padding-top: 0;
}

.section-intro {
  max-width: var(--width-read);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 28px;
}

.flow-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.flow-step {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  min-width: 0;
}

.flow-index {
  display: block;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.flow-name {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.prepare-list .prepare-item {
  padding-left: 0;
}

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

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

.section-contact-prepare .prepare-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.section-contact-prepare .prepare-item {
  border-left: 2px solid var(--accent-soft);
  padding-left: 18px;
  min-width: 0;
}

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

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

.duty-column-title {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.duty-list {
  display: grid;
  gap: 12px;
}

.duty-item {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.duty-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-soft);
}

.next-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.next-block {
  background-color: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  min-width: 0;
}

.next-block-title {
  font-size: 18px;
  margin-bottom: 10px;
}

.next-block-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.next-block-text a {
  color: var(--accent);
}

/* ---------------------------------------------------------
   pages：404
   --------------------------------------------------------- */
.site-error .error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
}

.error-block {
  max-width: 640px;
  width: 100%;
  text-align: center;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 600;
  color: var(--accent-soft);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 26px;
  margin-bottom: 14px;
}

.error-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 26px;
}

.error-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.error-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--white);
  font-size: 15px;
  color: var(--ink);
}

.error-links a:hover,
.error-links a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.error-actions {
  margin: 0;
}

.btn-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 26px;
  border-radius: var(--radius);
  background-color: var(--ink);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
}

.btn-home:hover,
.btn-home:focus-visible {
  background-color: var(--accent);
  color: var(--white);
  text-decoration: none;
}

/* ---------------------------------------------------------
   responsive：960px / 640px
   --------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    padding: 12px 20px;
  }

  .inner-main,
  .section-inner,
  .hero-inner,
  .footer-inner,
  .footer-copy {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero {
    padding: 44px 0 48px;
  }

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

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

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

  .section {
    padding: 44px 0;
  }

  .quality-grid,
  .contact-grid,
  .two-col,
  .method-layout,
  .scope-block,
  .boundary-grid,
  .needs-columns,
  .duty-columns,
  .next-blocks {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

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

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

  .footer-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .brand {
    font-size: 20px;
  }

  .nav-toggle {
    display: block;
    margin-left: auto;
  }

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

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

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

  .nav-link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 4px;
    min-height: 44px;
    border-bottom: 1px solid var(--line);
  }

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

  .inner-main,
  .section-inner,
  .hero-inner,
  .footer-inner,
  .footer-copy {
    padding-left: 16px;
    padding-right: 16px;
  }

  .inner-main {
    padding-top: 20px;
    padding-bottom: 48px;
  }

  .hero {
    padding: 32px 0 36px;
  }

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

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

  .section {
    padding: 36px 0;
  }

  .page-header {
    padding-bottom: 20px;
    margin-bottom: 28px;
  }

  .scenario-grid,
  .faq-groups,
  .team-grid,
  .prereq-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

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

  .direction-row,
  .capability-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px 14px;
  }

  .direction-owner,
  .capability-role {
    grid-column: 2;
    text-align: left;
  }

  .scenario-index-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px 14px;
  }

  .mapping-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 16px 4px;
  }

  .mapping-head {
    display: none;
  }

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

  .stage-fields dt {
    margin-top: 6px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .error-code {
    font-size: 44px;
  }

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

/* 尊重用户的减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}