:root {
  --bg: #0F1417;
  --panel: #1B2226;
  --panel-2: #161C20;
  --line: #2A343A;
  --line-soft: #212A2F;
  --text: #E8EDF0;
  --text-2: #9AA6AE;
  --text-3: #6E7A82;
  --orange: #F0A02C;
  --orange-dim: rgba(240, 160, 44, 0.14);
  --red: #D6483B;
  --red-dim: rgba(214, 72, 59, 0.14);
  --green: #4FA88B;
  --green-dim: rgba(79, 168, 139, 0.14);
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1120px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: SFMono-Regular, Consolas, Menlo, "Courier New", monospace;
}

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

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

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

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

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

button {
  font-family: inherit;
}

/* ============================================================
   layout · 全站骨架
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 20, 23, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
  padding: 6px 0;
}

.brand::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  background: var(--orange);
  border-radius: 1px;
}

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

.site-main {
  display: block;
  min-height: 40vh;
}

.inner-main {
  padding-bottom: 72px;
}

.site-footer {
  background: var(--panel-2);
  border-top: 1px solid var(--line);
  padding: 48px 0 0;
  margin-top: 0;
}

/* ============================================================
   components · 导航
   ============================================================ */

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

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-2);
  border-radius: 1px;
}

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

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

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

.site-nav {
  display: block;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 15px;
  color: var(--text-2);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

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

.has-dropdown > .nav-link::after {
  content: "";
  width: 5px;
  height: 5px;
  margin-left: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 176px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
  z-index: 60;
}

.has-dropdown:hover .nav-dropdown,
.has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--text-2);
  border-radius: var(--radius-sm);
}

.nav-dropdown a:hover,
.nav-dropdown a:focus-visible {
  background: var(--line-soft);
  color: var(--text);
}

/* ============================================================
   components · 通用区块头、按钮、标签
   ============================================================ */

.section {
  padding: 64px 0;
  border-top: 1px solid var(--line-soft);
}

.section-head {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 8px;
}

.section-title {
  font-size: 24px;
  color: var(--text);
}

.section-head h2 {
  font-size: 24px;
  color: var(--text);
}

.section-desc {
  margin-top: 10px;
  font-size: 15px;
  color: var(--text-2);
  max-width: 72ch;
}

.section-lead {
  margin-bottom: 22px;
  font-size: 15px;
  color: var(--text-2);
  max-width: 72ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background: var(--orange);
  color: #14191C;
  font-weight: 600;
}

.btn-primary:hover {
  background: #FFB247;
  color: #14191C;
}

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

.btn-ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.status-tag {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-open {
  color: var(--orange);
  background: var(--orange-dim);
  border-color: rgba(240, 160, 44, 0.34);
}

.status-closed {
  color: var(--red);
  background: var(--red-dim);
  border-color: rgba(214, 72, 59, 0.34);
}

.status-confirm,
.status-hold {
  color: var(--green);
  background: var(--green-dim);
  border-color: rgba(79, 168, 139, 0.34);
}

.field-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  margin-right: 8px;
  letter-spacing: 0.04em;
}

.inline-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--orange);
}

.inline-more::after {
  content: "→";
  font-family: var(--font-mono);
}

.inline-more:hover {
  color: #FFB247;
}

.mark {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 10px;
  vertical-align: 2px;
}

.mark-open {
  background: var(--orange);
}

.mark-closed {
  background: var(--red);
}

/* ============================================================
   components · 图片容器
   ============================================================ */

.hero-media,
.section-media,
.group-media,
.page-figure,
.content-figure,
.media-figure,
.checklist-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.hero-media img,
.section-media img,
.group-media img,
.page-figure img,
.content-figure img,
.media-figure img,
.checklist-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media figcaption,
.section-media figcaption,
.group-media figcaption,
.page-figure figcaption,
.content-figure figcaption,
.media-figure figcaption,
.checklist-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-2);
  border-top: 1px solid var(--line-soft);
  background: var(--panel-2);
}

/* ============================================================
   components · 页脚
   ============================================================ */

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1.1fr 1fr 1fr 1fr 1.2fr;
  gap: 32px 28px;
  padding-bottom: 40px;
}

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

.footer-brand-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 30ch;
}

.footer-group-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  margin-bottom: 12px;
}

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

.footer-links a {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

.footer-links a:hover {
  color: var(--orange);
}

.footer-about-text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
}

.footer-copyright,
.footer-note {
  font-size: 12.5px;
  color: var(--text-3);
}

/* ============================================================
   pages · 首页
   ============================================================ */

.hero {
  position: relative;
  padding: 72px 0 0;
  border-bottom: 1px solid var(--line-soft);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: center;
  padding-bottom: 56px;
}

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

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
}

.hero-text h1 {
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.28;
  color: var(--text);
}

.hero-lead {
  margin-top: 18px;
  font-size: 16px;
  color: var(--text-2);
  max-width: 46ch;
}

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

.hero-media {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
}

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

.hero-next {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0 16px;
  border-top: 1px solid var(--line);
  color: var(--text-2);
  font-size: 14px;
}

.hero-next-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.hero-next-title {
  color: var(--text);
  font-weight: 500;
}

.hero-next:hover .hero-next-title {
  color: var(--orange);
}

/* 服务总览 */

.anchor-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.anchor-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--text-2);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.anchor-link:hover {
  color: var(--orange);
  border-color: rgba(240, 160, 44, 0.4);
}

.service-rows {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.service-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1.2fr) auto auto;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 0.18s ease, background 0.18s ease;
}

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

.service-row:hover {
  background: var(--panel-2);
  border-left-color: var(--orange);
}

.service-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
}

.service-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.service-name a:hover {
  color: var(--orange);
}

.service-audience,
.service-scope {
  font-size: 13.5px;
  color: var(--text-2);
}

.service-more {
  font-size: 13px;
  color: var(--orange);
  white-space: nowrap;
}

.service-more::after {
  content: " →";
  font-family: var(--font-mono);
}

.section-services .section-media {
  margin-top: 28px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

/* 交付成果形式 */

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

.delivery-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.delivery-name {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 10px;
}

.delivery-desc {
  font-size: 14px;
  color: var(--text-2);
  flex: 1 1 auto;
}

.delivery-tag {
  align-self: flex-start;
  margin-top: 16px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

/* 能力与边界 */

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

.boundary-col {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-open {
  border-top: 2px solid var(--orange);
}

.boundary-closed {
  border-top: 2px solid var(--red);
}

.boundary-heading {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 16px;
}

.boundary-item {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

.boundary-item + .boundary-item {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.boundary-open .boundary-item::before {
  background: var(--orange);
}

.boundary-closed .boundary-item::before {
  background: var(--red);
}

/* 协作流程节点 */

.flow-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.flow-node {
  position: relative;
  padding: 24px 20px;
  border-right: 1px solid var(--line-soft);
}

.flow-node:last-child {
  border-right: 0;
}

.flow-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  margin-bottom: 10px;
}

.flow-name {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 12px;
}

.flow-input,
.flow-output {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
}

.flow-output {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

/* 适用场景 */

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scene-card {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scene-name {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 12px;
}

.scene-trigger {
  font-size: 14px;
  color: var(--text-2);
}

.scene-suggest {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--text-2);
}

.scene-suggest a {
  color: var(--orange);
}

/* 折叠问答 */

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

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

.faq-question {
  position: relative;
  display: block;
  padding: 18px 44px 18px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}

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

.faq-answer {
  padding: 0 0 20px;
  max-width: 72ch;
}

.faq-answer p {
  font-size: 14.5px;
  color: var(--text-2);
}

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

/* 对接准备 */

.prepare-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 24px;
  align-items: start;
}

.prepare-list-wrap {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prepare-list {
  counter-reset: prepare;
}

.prepare-item {
  position: relative;
  padding-left: 34px;
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.prepare-item + .prepare-item {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.prepare-index {
  position: absolute;
  left: 0;
  top: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  border: 1px solid rgba(240, 160, 44, 0.4);
  border-radius: var(--radius-sm);
}

.prepare-entry-wrap {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prepare-entry-title {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 14px;
}

.prepare-entry {
  display: block;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.prepare-entry:first-child {
  border-top: 0;
  padding-top: 0;
}

.prepare-entry-name {
  display: block;
  font-size: 14.5px;
  color: var(--text);
}

.prepare-entry-desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-2);
}

.prepare-entry:hover .prepare-entry-name {
  color: var(--orange);
}

/* ============================================================
   pages · 内页通用外壳
   ============================================================ */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 13px;
  color: var(--text-3);
}

.breadcrumb a {
  color: var(--text-2);
}

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

.breadcrumb-sep {
  color: var(--text-3);
}

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

.page-header {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 0;
}

.page-title {
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.28;
  font-weight: 600;
  color: var(--text);
}

.page-head {
  padding: 20px 0 0;
}

.page-head-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: 32px;
  align-items: start;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

.page-head-main {
  min-width: 0;
}

.page-head-eyebrow,
.page-head-kicker,
.page-head-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-head-summary {
  font-size: 15.5px;
  color: var(--text-2);
  max-width: 72ch;
}

.page-head-aside {
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-head-aside-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  margin-bottom: 10px;
}

.page-head-aside-list li + li,
.page-head-links li + li,
.page-head-aside-links li + li {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--line-soft);
}

.page-head-aside-list a,
.page-head-links a,
.page-head-aside-links a {
  font-size: 13.5px;
  color: var(--text-2);
}

.page-head-aside-list a:hover,
.page-head-links a:hover,
.page-head-aside-links a:hover {
  color: var(--orange);
}

.page-figure {
  margin-top: 32px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

/* ============================================================
   pages · 服务清单
   ============================================================ */

.page-fuwu .anchor-bar {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.anchor-list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--text-2);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.anchor-list a:hover {
  color: var(--orange);
  border-color: rgba(240, 160, 44, 0.4);
}

.service-group {
  padding: 48px 0 0;
}

.group-head {
  max-width: 720px;
  margin-bottom: 24px;
}

.group-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 8px;
}

.group-title {
  font-size: 22px;
  color: var(--text);
}

.group-desc {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--text-2);
  max-width: 72ch;
}

.group-media {
  margin-bottom: 24px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

.service-group .service-rows {
  display: block;
}

.service-group .service-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px;
  padding: 22px 20px;
}

.service-row-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
  padding-top: 2px;
}

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

.service-row-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.service-row-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 28px;
}

.service-row-fields dt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.service-row-fields dd {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
  min-width: 0;
}

.group-advice {
  padding: 48px 0 0;
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.advice-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.advice-text {
  font-size: 14px;
  color: var(--text-2);
}

.advice-link {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
}

.advice-link a {
  color: var(--orange);
}

.advice-note {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--text-2);
}

.advice-note a {
  color: var(--orange);
  margin-right: 14px;
}

/* ============================================================
   pages · 交付成果
   ============================================================ */

.section-deliverables .section-media {
  margin-bottom: 28px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

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

.deliverable-item {
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.deliverable-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  margin-bottom: 8px;
}

.deliverable-name {
  font-size: 16.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.deliverable-desc {
  font-size: 14px;
  color: var(--text-2);
}

.deliverable-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 22px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.deliverable-fields dt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.deliverable-fields dd {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
  min-width: 0;
}

.deliverable-item .status-tag {
  align-self: flex-start;
  margin-top: 16px;
}

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

.acceptance-col {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.acceptance-col-left {
  border-top: 2px solid var(--orange);
}

.acceptance-col-right {
  border-top: 2px solid var(--green);
}

.acceptance-col-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 14px;
}

.acceptance-row {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

.acceptance-row + .acceptance-row {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.archive-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.archive-item {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.archive-item-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.archive-item p {
  font-size: 14px;
  color: var(--text-2);
}

/* 相关页面延伸（通用） */

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.related-card {
  display: block;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.related-card:hover {
  border-color: rgba(240, 160, 44, 0.45);
  background: var(--panel-2);
}

.related-card-title,
.related-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.related-card-desc,
.related-text {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.related-card-name {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.related-card-text {
  font-size: 13.5px;
  color: var(--text-2);
}

.related-card-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  margin-bottom: 8px;
}

.related-card-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  margin-bottom: 8px;
}

.related-card:hover .related-card-title,
.related-card:hover .related-title,
.related-card:hover .related-card-name {
  color: var(--orange);
}

/* ============================================================
   pages · 能力与边界
   ============================================================ */

.section-scope .section-head,
.section-selfcheck .section-head,
.section-related .section-head {
  max-width: 720px;
  margin-bottom: 26px;
}

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

.scope-col {
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-col-open {
  border-top: 2px solid var(--orange);
}

.scope-col-closed {
  border-top: 2px solid var(--red);
}

.scope-col-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.scope-col-title {
  font-size: 16.5px;
  color: var(--text);
}

.scope-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

.scope-item + .scope-item {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.scope-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.scope-mark-open {
  color: var(--orange);
  background: var(--orange-dim);
  border-color: rgba(240, 160, 44, 0.36);
}

.scope-mark-closed {
  color: var(--red);
  background: var(--red-dim);
  border-color: rgba(214, 72, 59, 0.36);
}

.scope-item-body {
  min-width: 0;
}

.scope-item-name {
  color: var(--text);
  font-weight: 500;
}

.scope-item-desc {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--text-2);
}

.selfcheck-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.selfcheck-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.selfcheck-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  border: 1px solid rgba(240, 160, 44, 0.4);
  border-radius: var(--radius-sm);
}

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

.selfcheck-question {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

.selfcheck-desc {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--text-2);
}

/* ============================================================
   pages · 协作流程
   ============================================================ */

.section-timeline .section-media {
  margin-bottom: 28px;
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.timeline-node {
  position: relative;
  padding: 22px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
  border-radius: var(--radius);
}

.timeline-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  margin-bottom: 8px;
}

.timeline-name {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 8px;
}

.timeline-goal {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.io-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.io-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--line-soft);
}

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

.io-row-head {
  background: var(--panel-2);
}

.io-row-head .io-cell {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

.io-cell {
  padding: 16px 18px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
  min-width: 0;
  border-right: 1px solid var(--line-soft);
}

.io-cell:last-child {
  border-right: 0;
}

.io-cell-index {
  display: flex;
  align-items: flex-start;
}

.io-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

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

.cooperate-item {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.cooperate-name {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.cooperate-desc {
  font-size: 14px;
  color: var(--text-2);
}

.cooperate-when {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
}

/* ============================================================
   pages · 团队与协作
   ============================================================ */

.section-roles .section-head,
.section-comm .section-head,
.section-records .section-head,
.section-related .section-head {
  max-width: 720px;
  margin-bottom: 26px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.role-card {
  padding: 20px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.role-index {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--orange);
  margin-bottom: 8px;
}

.role-name {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.role-duty {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.role-handoff {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--text-3);
}

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

.content-figure {
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

.comm-list,
.records-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.comm-item,
.records-item {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.comm-title,
.records-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.comm-text,
.records-text {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ============================================================
   pages · 常见问题
   ============================================================ */

.faq-media {
  padding: 32px 0 0;
}

.media-figure {
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
}

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

.faq-group {
  padding: 48px 0 0;
}

.faq-group .section-head {
  max-width: 720px;
  margin-bottom: 20px;
}

.faq-group .section-head h2 {
  font-size: 22px;
  color: var(--text);
}

.related-pages {
  padding: 48px 0 0;
}

.related-pages .section-head {
  max-width: 720px;
  margin-bottom: 26px;
}

/* ============================================================
   pages · 对接说明
   ============================================================ */

.checklist-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px;
  align-items: start;
}

.checklist {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.checklist-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line-soft);
}

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

.checklist-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  border: 1px solid rgba(240, 160, 44, 0.4);
  border-radius: var(--radius-sm);
}

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

.checklist-name {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

.checklist-text {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.checklist-media {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
}

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

.describe-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.describe-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.describe-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  margin-bottom: 10px;
}

.describe-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.describe-text {
  font-size: 14px;
  color: var(--text-2);
  flex: 1 1 auto;
}

.describe-miss {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--text-3);
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.path-step {
  padding: 22px 20px;
  border-right: 1px solid var(--line-soft);
}

.path-step:last-child {
  border-right: 0;
}

.path-step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  border: 1px solid rgba(240, 160, 44, 0.4);
  border-radius: var(--radius-sm);
}

.path-step-body {
  min-width: 0;
}

.path-step-title {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.path-step-text {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.path-step-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--orange);
}

.path-step-link::after {
  content: " →";
  font-family: var(--font-mono);
}

/* ============================================================
   pages · 404
   ============================================================ */

.error-main {
  padding: 80px 0 96px;
}

.error-panel {
  padding: 40px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 42px;
  line-height: 1;
  color: var(--orange);
  margin-bottom: 16px;
}

.error-title {
  font-size: clamp(24px, 3vw, 34px);
  color: var(--text);
  margin-bottom: 14px;
}

.error-text {
  font-size: 15px;
  color: var(--text-2);
  max-width: 60ch;
}

.error-action {
  margin-top: 26px;
}

.error-links {
  margin-top: 40px;
}

.error-links .section-title {
  font-size: 20px;
  margin-bottom: 18px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.error-link-list a {
  display: block;
  padding: 18px;
  font-size: 14.5px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-link-list a:hover {
  color: var(--orange);
  border-color: rgba(240, 160, 44, 0.45);
}

/* ============================================================
   responsive · 960px
   ============================================================ */

@media (max-width: 960px) {
  .container,
  .header-inner,
  .breadcrumb,
  .page-header {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    padding: 0 20px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

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

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

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

  .nav-link {
    padding: 0 2px;
    font-size: 15.5px;
  }

  .has-dropdown > .nav-link::after {
    margin-left: auto;
  }

  .nav-dropdown {
    position: static;
    min-width: 0;
    padding: 0 0 10px 14px;
    background: transparent;
    border: 0;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-dropdown a {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0 2px;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-bottom: 40px;
  }

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

  .service-row {
    grid-template-columns: 40px minmax(0, 1fr) auto;
    align-items: start;
    gap: 10px 14px;
  }

  .service-audience,
  .service-scope {
    grid-column: 2 / 3;
  }

  .service-more {
    grid-column: 2 / 3;
  }

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

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

  .flow-node:nth-child(2n) {
    border-right: 0;
  }

  .flow-node:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }

  .scene-grid,
  .advice-list,
  .selfcheck-list,
  .archive-list,
  .comm-list,
  .records-list,
  .describe-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .path-step:nth-child(2n) {
    border-right: 0;
  }

  .path-step:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }

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

  .footer-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 24px;
  }

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

/* ============================================================
   responsive · 640px
   ============================================================ */

@media (max-width: 640px) {
  .section {
    padding: 44px 0;
  }

  .hero {
    padding-top: 36px;
  }

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

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

  .group-title,
  .faq-group .section-head h2 {
    font-size: 19px;
  }

  .page-head-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .anchor-bar,
  .anchor-list {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .anchor-link,
  .anchor-list a {
    flex: 0 0 auto;
  }

  .service-row {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .service-row .status-tag,
  .service-group .service-row .status-tag {
    grid-column: 2 / 3;
    justify-self: start;
  }

  .service-audience,
  .service-scope,
  .service-more {
    grid-column: 2 / 3;
  }

  .service-group .service-row {
    grid-template-columns: 32px minmax(0, 1fr);
  }

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

  .delivery-grid,
  .boundary-columns,
  .scene-grid,
  .advice-list,
  .selfcheck-list,
  .archive-list,
  .comm-list,
  .records-list,
  .describe-grid,
  .related-grid,
  .deliverable-list,
  .acceptance-grid,
  .scope-grid,
  .cooperate-list,
  .timeline,
  .role-grid,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .flow-node,
  .flow-node:nth-child(2n),
  .path-step,
  .path-step:nth-child(2n) {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .flow-node:last-child,
  .path-step:last-child {
    border-bottom: 0;
  }

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

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

  .io-cell-output {
    grid-column: 2 / 3;
    border-top: 1px dashed var(--line-soft);
  }

  .io-cell {
    padding: 14px;
    border-right: 0;
  }

  .io-row-head {
    display: none;
  }

  .io-cell-index {
    border-right: 1px solid var(--line-soft);
  }

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

  .footer-group.footer-about {
    grid-column: 1 / -1;
  }

  .error-panel {
    padding: 26px 20px;
  }

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

/* ============================================================
   responsive · 390px
   ============================================================ */

@media (max-width: 420px) {
  .container,
  .header-inner,
  .breadcrumb,
  .page-header {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    gap: 12px;
  }

  .brand {
    font-size: 16px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

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

  .footer-brand {
    grid-column: auto;
  }
}

/* ============================================================
   motion · 渐显增强与锚点滚动
   ============================================================ */

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}