/* ==========================================================================
   飘花 gstzdb.com — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量与基础排版
   -------------------------------------------------------------------------- */

:root {
  --c-text: #1b1f24;
  --c-text-sub: #5a626c;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f6f7;
  --c-line: #e2e5e8;
  --c-accent: #1f5f4b;
  --c-accent-soft: #e8f1ed;
  --c-warn: #8a4b12;
  --radius: 6px;
  --shell: 1120px;
  --gutter: 24px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}

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

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

body.site-body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  text-rendering: optimizeLegibility;
}

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

p {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

figcaption {
  color: var(--c-text-sub);
  font-size: 13px;
  line-height: 1.6;
}

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

/* --------------------------------------------------------------------------
   layout · 顶部事实条 / 页头 / 主导航 / 页脚骨架
   -------------------------------------------------------------------------- */

.fact-bar {
  background: var(--c-accent-soft);
  border-bottom: 1px solid var(--c-line);
}

.fact-bar-text {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px var(--gutter);
  color: var(--c-accent);
  font-size: 13px;
  line-height: 1.6;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px var(--gutter);
}

.brand {
  flex: none;
  color: var(--c-text);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
}

.brand:hover,
.brand:focus-visible {
  color: var(--c-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;
  flex-wrap: wrap;
}

.nav-list li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 10px 12px;
  min-height: 44px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 24px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--c-text);
  text-decoration: none;
  border-bottom-color: var(--c-line);
}

.nav-list a.is-current {
  color: var(--c-accent);
  font-weight: 600;
  border-bottom-color: var(--c-accent);
}

.nav-toggle {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--c-text);
}

.nav-toggle-bar:first-child {
  margin-top: 0;
}

.nav-toggle-bar:last-child {
  margin-bottom: 0;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 8px;
}

/* 页脚 */

.site-footer {
  margin-top: 56px;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(4, minmax(150px, 1fr));
  gap: 32px 28px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px var(--gutter) 28px;
}

.footer-brand-name {
  color: var(--c-text);
  font-size: 18px;
  font-weight: 600;
}

.footer-brand-desc {
  margin-top: 10px;
  max-width: 320px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.footer-group-title {
  margin-bottom: 12px;
  color: var(--c-text);
  font-size: 14px;
  font-weight: 600;
}

.footer-list li + li {
  margin-top: 8px;
}

.footer-list a {
  display: inline-block;
  padding: 2px 0;
  min-height: 24px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.6;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px var(--gutter) 28px;
  border-top: 1px solid var(--c-line);
}

.footer-note,
.footer-copy {
  color: var(--c-text-sub);
  font-size: 13px;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   components · 通用按钮 / 面包屑 / 页面标题区 / 图片 / 折叠问答 / 相关入口
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #184a3a;
  border-color: #184a3a;
  color: #ffffff;
}

.btn-ghost {
  background: var(--c-bg);
  border-color: var(--c-line);
  color: var(--c-text);
}

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

.btn-plain {
  background: var(--c-bg-soft);
  border-color: var(--c-line);
  color: var(--c-text);
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 0;
  color: var(--c-text-sub);
  font-size: 13px;
  line-height: 1.6;
}

.breadcrumb a {
  color: var(--c-text-sub);
  text-decoration: underline;
}

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

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

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

.page-header {
  padding: 18px 0 24px;
  border-bottom: 1px solid var(--c-line);
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--c-text);
}

.page-description {
  margin-top: 12px;
  max-width: 720px;
  color: var(--c-text-sub);
  font-size: 16px;
  line-height: 1.75;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
}

.section-desc,
.section-intro,
.section-lead {
  margin-top: 10px;
  max-width: 720px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

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

.section-more a {
  font-weight: 600;
}

/* 图片容器统一约束 */

.hero-media,
.content-media,
.section-media,
.standards-figure,
.process-figure,
.prepare-figure,
.page-media {
  display: block;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-media img,
.content-media img,
.section-media img,
.standards-figure img,
.process-figure img,
.prepare-figure img,
.page-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--c-bg-soft);
}

.hero-media figcaption,
.content-media figcaption,
.section-media figcaption,
.standards-figure figcaption,
.process-figure figcaption,
.prepare-figure figcaption,
.page-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--c-line);
}

/* 折叠问答 */

.faq-list {
  margin-top: 20px;
  border-top: 1px solid var(--c-line);
}

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

.faq-question {
  position: relative;
  padding: 16px 40px 16px 0;
  min-height: 44px;
  color: var(--c-text);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--c-accent);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}

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

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

.faq-answer {
  padding: 0 0 18px;
  max-width: 720px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

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

.faq-more {
  margin-top: 8px;
  font-size: 14px;
}

/* 相关页面入口 */

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.related-item {
  padding: 16px 18px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-item a {
  display: inline-block;
  min-height: 24px;
  font-size: 15px;
  font-weight: 600;
}

.related-desc {
  display: block;
  margin-top: 8px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.text-link {
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  font-weight: 600;
}

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

.home-main {
  display: block;
}

.hero-section {
  border-bottom: 1px solid var(--c-line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: start;
  gap: 40px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px var(--gutter) 36px;
}

.hero-copy {
  max-width: 560px;
}

.hero-eyebrow {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
}

.hero-title {
  margin-top: 12px;
  font-size: 40px;
  font-weight: 600;
  line-height: 1.25;
}

.hero-lead {
  margin-top: 16px;
  color: var(--c-text-sub);
  font-size: 16px;
  line-height: 1.8;
}

.hero-points {
  margin-top: 20px;
}

.hero-points li {
  position: relative;
  padding-left: 20px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.hero-points li + li {
  margin-top: 8px;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--c-accent);
}

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

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

.content-media-primary {
  max-width: var(--shell);
  margin: 0 auto 0;
  padding: 0 var(--gutter) 36px;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: visible;
}

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

.content-media-primary figcaption {
  padding: 10px 0 0;
  border-top: 0;
}

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

.hero-section + .section {
  border-top: 0;
}

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

.section-head {
  margin-bottom: 22px;
}

/* 服务条目索引 */

.service-index {
  border-top: 1px solid var(--c-line);
}

.service-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.service-num {
  color: var(--c-accent);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
}

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

.service-name {
  font-size: 17px;
  font-weight: 600;
}

.service-audience {
  margin-top: 6px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.service-items {
  margin-top: 6px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.service-link {
  align-self: center;
  min-height: 44px;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

/* 合作流程预览 */

.process-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.process-step {
  padding: 18px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.process-num {
  display: block;
  color: var(--c-accent);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
}

.process-name {
  margin-top: 8px;
  font-size: 17px;
  font-weight: 600;
}

.process-client,
.process-confirm {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.process-confirm {
  padding-top: 10px;
  border-top: 1px dashed var(--c-line);
}

/* 交付标准摘要 */

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

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

.standards-subtitle {
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-accent);
  font-size: 17px;
  font-weight: 600;
}

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

.standards-list li {
  position: relative;
  padding-left: 18px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.standards-list li + li {
  margin-top: 10px;
}

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

/* 站内栏目索引 */

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.sitemap-cell {
  padding: 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.sitemap-name {
  font-size: 15px;
  font-weight: 600;
}

.sitemap-name a {
  display: inline-block;
  min-height: 24px;
}

.sitemap-desc {
  margin-top: 8px;
  color: var(--c-text-sub);
  font-size: 13px;
  line-height: 1.65;
}

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

.section-services-overview,
.section-direction-detail,
.section-deliverable-map,
.section-related,
.section-standards-check,
.section-records,
.section-review,
.prepare-overview,
.prepare-usage,
.prepare-feedback,
.prepare-related,
.process-stages,
.client-duties,
.stage-rules,
.related-links,
.faq-group {
  padding: 36px 0;
  border-top: 1px solid var(--c-line);
}

.page-header + .section,
.page-header + .faq-group,
.page-header + .process-stages,
.page-header + .prepare-overview,
.page-header + .section-services-overview {
  border-top: 0;
}

.direction-table {
  margin-top: 22px;
  border-top: 1px solid var(--c-line);
}

.direction-row {
  border-bottom: 1px solid var(--c-line);
}

.direction-entry {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px;
  padding: 20px 0;
}

.direction-no {
  color: var(--c-accent);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
}

.direction-name {
  grid-column: 2;
  font-size: 17px;
  font-weight: 600;
}

.direction-body {
  grid-column: 2;
  min-width: 0;
}

.direction-audience {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.direction-items {
  margin-top: 6px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.direction-link {
  grid-row: 1 / span 2;
  grid-column: 3;
  align-self: center;
  min-height: 44px;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 22px;
}

.detail-block {
  padding: 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.detail-title {
  font-size: 17px;
  font-weight: 600;
}

.detail-audience {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.detail-materials {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
}

.detail-materials li {
  position: relative;
  padding-left: 18px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.detail-materials li + li {
  margin-top: 8px;
}

.detail-materials li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 50%;
}

.map-table {
  margin-top: 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.map-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  background: var(--c-accent-soft);
}

.map-head-item {
  padding: 12px 18px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
}

.map-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  border-top: 1px solid var(--c-line);
}

.map-cell {
  padding: 14px 18px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.7;
}

.map-cell-item {
  color: var(--c-text);
  font-weight: 600;
  border-right: 1px solid var(--c-line);
}

.section-media {
  margin-top: 24px;
}

.section-media img {
  aspect-ratio: 21 / 9;
}

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

.process-stages > .section-lead {
  margin-bottom: 24px;
}

.stage-block {
  padding: 22px 0;
  border-top: 1px solid var(--c-line);
}

.stage-block:first-of-type {
  border-top: 2px solid var(--c-accent);
}

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

.stage-index {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
}

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

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

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

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

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

.stage-col p {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.stage-list {
  margin-top: 10px;
}

.stage-list li {
  position: relative;
  padding-left: 18px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.stage-list li + li {
  margin-top: 8px;
}

.stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 50%;
}

.stage-confirm {
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--c-accent-soft);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.process-figure {
  margin: 32px 0;
}

.process-figure img {
  aspect-ratio: 21 / 9;
}

.duty-group {
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.duty-group:last-child {
  border-bottom: 0;
}

.duty-group-title {
  font-size: 17px;
  font-weight: 600;
}

.duty-list {
  margin-top: 10px;
}

.duty-list li {
  position: relative;
  padding-left: 18px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.duty-list li + li {
  margin-top: 8px;
}

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

.rule-block {
  margin-top: 20px;
  padding: 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.rule-block-title {
  font-size: 17px;
  font-weight: 600;
}

.rule-block p {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.related-links .related-list {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.related-links .related-item {
  padding: 14px 16px;
}

.related-links .related-item a {
  display: inline-block;
  min-height: 24px;
  font-size: 15px;
  font-weight: 600;
}

.related-links .related-desc {
  display: block;
  margin-top: 6px;
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 交付标准页
   -------------------------------------------------------------------------- */

.standards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 24px;
}

.standards-col-entries,
.standards-col-methods {
  min-width: 0;
}

.col-title {
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-accent);
  font-size: 17px;
  font-weight: 600;
}

.standards-list {
  margin-top: 16px;
}

.standards-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.standards-num {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.7;
}

.standards-body {
  min-width: 0;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.standards-name {
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
}

.standards-desc {
  margin-top: 4px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.methods-list {
  margin-top: 16px;
}

.methods-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.methods-num {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.7;
}

.methods-desc {
  min-width: 0;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.standards-figure {
  margin-top: 28px;
}

.standards-figure img {
  aspect-ratio: 21 / 9;
}

.records-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 28px;
  margin-top: 22px;
}

.records-text {
  min-width: 0;
}

.records-text p {
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.records-text p + p {
  margin-top: 12px;
}

.records-list {
  min-width: 0;
}

.records-item {
  position: relative;
  padding: 12px 16px 12px 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.7;
}

.records-item + .records-item {
  margin-top: 10px;
}

.records-item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 22px;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  border-radius: 50%;
}

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

.review-block {
  padding: 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.review-title {
  font-size: 17px;
  font-weight: 600;
}

.review-block p {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   pages · 合作准备页
   -------------------------------------------------------------------------- */

.prepare-figure {
  margin-top: 22px;
}

.prepare-figure img {
  aspect-ratio: 21 / 9;
}

.material-list {
  margin-top: 24px;
  border-top: 1px solid var(--c-line);
}

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

.material-index {
  color: var(--c-accent);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
}

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

.material-name {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 17px;
  font-weight: 600;
}

.material-flag {
  padding: 2px 8px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
}

.material-flag.is-required {
  background: var(--c-accent-soft);
  color: var(--c-accent);
}

.material-desc {
  margin-top: 8px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.prepare-usage .usage-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

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

.usage-title {
  font-size: 17px;
  font-weight: 600;
}

.usage-text {
  margin-top: 8px;
  max-width: 720px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.feedback-guide {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 22px;
}

.feedback-item {
  padding: 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.feedback-title {
  font-size: 17px;
  font-weight: 600;
}

.feedback-text {
  margin-top: 10px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.feedback-item .text-link {
  margin-top: 12px;
}

.prepare-tip {
  margin-top: 24px;
  padding: 20px;
  background: var(--c-accent-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.tip-title {
  color: var(--c-accent);
  font-size: 17px;
  font-weight: 600;
}

.tip-list {
  margin-top: 12px;
}

.tip-list li {
  position: relative;
  padding-left: 18px;
  color: var(--c-text-sub);
  font-size: 15px;
  line-height: 1.75;
}

.tip-list li + li {
  margin-top: 8px;
}

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

.tip-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  color: var(--c-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.prepare-related .related-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

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

.page-media {
  margin: 24px 0 0;
}

.page-media img {
  aspect-ratio: 21 / 9;
}

.faq-group .faq-list {
  margin-top: 18px;
}

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

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

.error-block {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--c-line);
}

.error-code {
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
}

.error-block h1 {
  margin-top: 12px;
  font-size: 32px;
  font-weight: 600;
}

.error-text {
  margin-top: 14px;
  max-width: 720px;
  color: var(--c-text-sub);
  font-size: 16px;
  line-height: 1.75;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.error-links {
  padding: 32px 0 8px;
}

.error-links h2 {
  font-size: 22px;
  font-weight: 600;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.error-link-list li a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 16px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-text);
  font-size: 15px;
  font-weight: 600;
}

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

/* --------------------------------------------------------------------------
   responsive · 960px / 640px
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
  .header-inner {
    padding: 12px var(--gutter);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: block;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 8px 20px rgba(27, 31, 36, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-width: var(--shell);
    margin: 0 auto;
    padding: 8px var(--gutter) 14px;
  }

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

  .nav-list a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--c-line);
    white-space: normal;
  }

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

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

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 36px var(--gutter) 28px;
  }

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

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

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

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .detail-list,
  .standards-grid,
  .review-grid,
  .feedback-guide,
  .stage-columns,
  .records-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .map-head,
  .map-row {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .fact-bar-text {
    font-size: 12px;
  }

  .brand {
    font-size: 19px;
  }

  .page-title,
  .error-block h1 {
    font-size: 26px;
  }

  .hero-title {
    font-size: 27px;
  }

  .section-title,
  .error-links h2 {
    font-size: 20px;
  }

  .section {
    padding: 30px 0;
  }

  .section-services-overview,
  .section-direction-detail,
  .section-deliverable-map,
  .section-related,
  .section-standards-check,
  .section-records,
  .section-review,
  .prepare-overview,
  .prepare-usage,
  .prepare-feedback,
  .prepare-related,
  .process-stages,
  .client-duties,
  .stage-rules,
  .related-links,
  .faq-group {
    padding: 28px 0;
  }

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

  .service-link,
  .direction-link {
    grid-row: auto;
    grid-column: 2;
    align-self: start;
    padding: 6px 0;
  }

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

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

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

  .map-head-item + .map-head-item,
  .map-row .map-cell-form {
    border-top: 1px solid var(--c-line);
  }

  .map-cell-item {
    border-right: 0;
  }

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

  .standards-item,
  .methods-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
  }

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

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

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