/* ==========================================================================
   m.天美 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base
   ========================================================================== */

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

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

body {
  margin: 0;
  background-color: #ffffff;
  color: #111111;
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  font-weight: 700;
  color: #111111;
  letter-spacing: 0;
}

p {
  margin: 0;
}

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

a {
  color: #111111;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: #9c2b1f;
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
}

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

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

strong {
  font-weight: 700;
}

:focus-visible {
  outline: 2px solid #9c2b1f;
  outline-offset: 2px;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background-color: #111111;
  color: #ffffff;
  font-size: 14px;
  border: 1px solid #111111;
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: #ffffff;
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding-left: 48px;
  padding-right: 48px;
}

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

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #ffffff;
  color: #111111;
}

/* ---------- 页头 ---------- */

.site-header {
  position: relative;
  z-index: 60;
  background-color: #ffffff;
  border-bottom: 3px double #111111;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 48px;
}

.brand {
  flex: 0 0 auto;
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: #111111;
  letter-spacing: 0.02em;
}

.brand:hover {
  color: #9c2b1f;
}

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

.site-nav > ul {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  line-height: 1.5;
  color: #111111;
  border-bottom: 1px solid transparent;
}

.nav-link:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

.nav-link.is-current {
  border-bottom-color: #9c2b1f;
  color: #9c2b1f;
  font-weight: 500;
}

.header-cta {
  flex: 0 0 auto;
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  line-height: 1.4;
  color: #111111;
  border: 1px solid #111111;
  background-color: #ffffff;
  white-space: nowrap;
}

.header-cta:hover {
  background-color: #111111;
  color: #ffffff;
  border-color: #111111;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid #111111;
  background-color: #ffffff;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #111111;
}

/* 移动端导航面板 */
.mobile-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: #ffffff;
  border-bottom: 3px double #111111;
  padding: 12px 24px 20px;
  box-shadow: 0 12px 24px rgba(17, 17, 17, 0.08);
}

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

.mobile-nav-close {
  display: block;
  width: 100%;
  min-height: 44px;
  text-align: right;
  font-size: 14px;
  color: #6b6b6b;
  border-bottom: 1px solid #d9d5cc;
  margin-bottom: 8px;
}

.mobile-nav-close::after {
  content: "关闭 ✕";
}

.mobile-nav-close {
  font-size: 0;
}

.mobile-nav-close::after {
  font-size: 14px;
}

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

.mobile-nav > ul > li {
  border-bottom: 1px solid #d9d5cc;
}

.mobile-nav > ul > li:last-child {
  border-bottom: 0;
}

.mobile-nav > ul > li > a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 8px 4px;
  font-size: 16px;
  color: #111111;
}

.mobile-nav > ul > li > a:hover {
  color: #9c2b1f;
}

/* ---------- 主内容 ---------- */

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

.inner-main {
  padding-bottom: 12px;
}

.home-main {
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 48px 0;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: #6b6b6b;
}

.breadcrumb a {
  color: #6b6b6b;
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

.breadcrumb-sep {
  color: #d9d5cc;
}

.breadcrumb-current {
  color: #111111;
}

/* ---------- 页面标题区 ---------- */

.page-header {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 48px 0;
}

.page-title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: #111111;
  max-width: 900px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: 72px;
  background-color: #ffffff;
  border-top: 3px double #111111;
  color: #111111;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 32px;
}

.footer-col h2 {
  margin-bottom: 12px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #6b6b6b;
  text-transform: uppercase;
}

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

.footer-col li a {
  display: inline-block;
  padding: 2px 0;
  font-size: 14px;
  line-height: 1.7;
  color: #111111;
  border-bottom: 1px solid transparent;
}

.footer-col li a:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 24px;
  padding-top: 20px;
  padding-bottom: 32px;
  border-top: 1px solid #d9d5cc;
}

.footer-brand {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 16px;
  font-weight: 700;
  color: #111111;
}

.footer-note {
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
}

.footer-copy {
  margin-left: auto;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #6b6b6b;
}

/* ==========================================================================
   components · 通用元件
   ========================================================================== */

/* ---------- 栏目标签 / kicker ---------- */

.kicker,
.section-label,
.section-num,
.group-index,
.group-desc,
.band-note,
.title-num,
.section-num,
.h2-num {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #9c2b1f;
  line-height: 1.6;
}

.kicker {
  display: inline-block;
  margin-bottom: 14px;
  padding-bottom: 4px;
  border-bottom: 1px solid #9c2b1f;
}

.section-label {
  display: block;
  margin-bottom: 12px;
  color: #6b6b6b;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid #111111;
  border-radius: 0;
  text-align: center;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background-color: #111111;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #9c2b1f;
  border-color: #9c2b1f;
  color: #ffffff;
}

.btn-ghost {
  background-color: #ffffff;
  color: #111111;
}

.btn-ghost:hover {
  background-color: #111111;
  color: #ffffff;
}

.btn-outline {
  background-color: #ffffff;
  color: #111111;
  border-color: #111111;
}

.btn-outline:hover {
  background-color: #111111;
  color: #ffffff;
}

/* ---------- 文本链接 ---------- */

.text-link {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14px;
  line-height: 1.6;
  color: #111111;
  border-bottom: 1px solid #9c2b1f;
}

.text-link:hover {
  color: #9c2b1f;
  border-bottom-width: 2px;
}

/* ---------- 分隔线 ---------- */

.rule-double {
  width: 100%;
  max-width: 1120px;
  margin: 32px auto;
  height: 0;
  border: 0;
  border-top: 3px double #111111;
}

.rule-thin {
  width: 100%;
  max-width: 1120px;
  margin: 40px auto;
  height: 0;
  border: 0;
  border-top: 1px solid #d9d5cc;
}

.rule-line {
  width: 100%;
  max-width: 1120px;
  margin: 24px auto 32px;
  height: 0;
  border-top: 3px double #111111;
}

.section-divider {
  width: 100%;
  max-width: 1120px;
  margin: 28px auto;
  height: 0;
  border-top: 3px double #111111;
}

/* ---------- 区块标题头 ---------- */

.section-head {
  margin-bottom: 24px;
}

.section-head h2,
.section-title {
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.35;
  font-weight: 700;
  color: #111111;
  margin-bottom: 10px;
}

.section-desc,
.section-intro,
.section-note {
  max-width: 760px;
  font-size: 15px;
  line-height: 1.85;
  color: #4a4a4a;
}

.section-note {
  margin-bottom: 18px;
}

.title-num,
.section-num {
  display: inline-block;
  margin-right: 10px;
  color: #9c2b1f;
}

/* ---------- 图片容器 ---------- */

figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background-color: #f5f3ee;
}

.hero-figure img,
.style-figure img,
.page-figure img,
.intro-figure img,
.content-figure img {
  border: 1px solid #d9d5cc;
}

/* ---------- 相关页面列表 ---------- */

.related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 28px;
  border-top: 1px solid #d9d5cc;
  padding-top: 18px;
}

.related-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid #ece8df;
}

.related-list li a {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  color: #111111;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
}

.related-list li a:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

.related-desc {
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
}

/* ---------- FAQ 折叠 ---------- */

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #d9d5cc;
}

.faq-item {
  border-bottom: 1px solid #d9d5cc;
}

.faq-item summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 40px 16px 0;
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: #111111;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 14px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 20px;
  line-height: 1;
  color: #9c2b1f;
}

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

.faq-item[open] > summary {
  color: #9c2b1f;
}

.faq-item > p,
.faq-answer {
  padding: 0 40px 18px 16px;
  border-left: 2px solid #9c2b1f;
  margin-left: 2px;
  font-size: 15px;
  line-height: 1.85;
  color: #3a3a3a;
}

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

.faq-link {
  font-size: 14px;
}

.faq-link a {
  color: #9c2b1f;
  border-bottom: 1px solid #9c2b1f;
}

/* ==========================================================================
   pages
   ========================================================================== */

/* --------------------------------------------------------------------------
   首页
   -------------------------------------------------------------------------- */

/* 首屏 */
.hero {
  padding: 40px 0 56px;
  border-bottom: 1px solid #d9d5cc;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.hero-lead h1 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 20px;
  max-width: 620px;
}

.hero-desc {
  max-width: 620px;
  font-size: 16px;
  line-height: 1.9;
  color: #3a3a3a;
}

.hero-desc + .hero-desc {
  margin-top: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 32px;
}

.hero-figure {
  max-width: 620px;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero-block {
  padding: 22px 24px;
  background-color: #f5f3ee;
  border-left: 3px solid #111111;
}

.side-title {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 14px;
  color: #111111;
}

.brief-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: brief;
}

.brief-list li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.75;
  color: #3a3a3a;
  counter-increment: brief;
}

.brief-list li::before {
  content: counter(brief, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
}

.hero-block .text-link {
  margin-top: 14px;
}

/* 场景目录预览 */
.scene-preview {
  padding: 56px 0 48px;
  border-bottom: 1px solid #d9d5cc;
}

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

.scene-preview .section-head h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  margin-bottom: 10px;
}

.scene-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 24px;
  border-top: 1px solid #d9d5cc;
  border-bottom: 1px solid #d9d5cc;
}

.scene-tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 18px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6b6b6b;
  border-right: 1px solid #d9d5cc;
}

.scene-tab:hover {
  color: #9c2b1f;
}

.scene-tab.is-active {
  color: #9c2b1f;
  background-color: #f5f3ee;
}

.scene-rows {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #111111;
}

.scene-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.6fr) minmax(0, 1.6fr);
  gap: 20px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid #d9d5cc;
}

.row-name {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.row-index {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
  flex: 0 0 auto;
}

.row-name a {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: #111111;
  border-bottom: 1px solid transparent;
}

.row-name a:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

.row-tag {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6b6b6b;
}

.row-desc {
  font-size: 14px;
  line-height: 1.75;
  color: #3a3a3a;
}

.section-foot {
  margin-top: 26px;
}

/* 交付流程预览 */
.process-preview {
  padding: 56px 0 48px;
  border-bottom: 1px solid #d9d5cc;
}

.process-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 56px;
  align-items: start;
}

.process-lead h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  margin-bottom: 14px;
}

.process-lead p {
  max-width: 420px;
  font-size: 15px;
  line-height: 1.85;
  color: #3a3a3a;
}

.process-lead p + p {
  margin-top: 12px;
}

.process-lead .text-link {
  margin-top: 18px;
}

.process-steps {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #111111;
}

.process-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  grid-template-areas:
    "index title"
    "index desc";
  column-gap: 18px;
  row-gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid #d9d5cc;
}

.process-step .step-index {
  grid-area: index;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #9c2b1f;
  line-height: 1.3;
}

.process-step h3 {
  grid-area: title;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.process-step p {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

/* 报价口径摘要 */
.terms-preview {
  padding: 56px 0 48px;
  border-bottom: 1px solid #d9d5cc;
}

.terms-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
}

.terms-main h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  margin-bottom: 10px;
}

.terms-table {
  width: 100%;
  margin: 20px 0 18px;
  border-top: 1px solid #111111;
  border-bottom: 1px solid #111111;
  font-size: 14px;
}

.terms-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #6b6b6b;
  background-color: #f5f3ee;
  border-bottom: 1px solid #d9d5cc;
}

.terms-table tbody th {
  width: 32%;
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  color: #111111;
  vertical-align: top;
}

.terms-table tbody td {
  padding: 12px 14px;
  color: #3a3a3a;
  line-height: 1.75;
  vertical-align: top;
  border-left: 1px solid #ece8df;
}

.terms-table tbody tr:nth-child(even) {
  background-color: #f5f3ee;
}

.terms-table tbody tr + tr th,
.terms-table tbody tr + tr td {
  border-top: 1px solid #ece8df;
}

.terms-aside {
  padding: 24px;
  background-color: #f5f3ee;
  border: 1px solid #d9d5cc;
}

.terms-aside h3 {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 14px;
}

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

.aside-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: #3a3a3a;
}

.aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background-color: #9c2b1f;
}

.aside-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #d9d5cc;
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
}

/* 工作方式 */
.style-preview {
  padding: 56px 0 48px;
  border-bottom: 1px solid #d9d5cc;
}

.style-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}

.style-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.style-body h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  margin-bottom: 14px;
}

.style-body p {
  max-width: 560px;
  font-size: 15px;
  line-height: 1.85;
  color: #3a3a3a;
}

.style-body p + p {
  margin-top: 12px;
}

.style-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 22px 0 20px;
  padding-top: 18px;
  border-top: 1px solid #d9d5cc;
}

.style-points li h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 4px;
}

.style-points li p {
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

/* 常见问题预览 */
.faq-preview {
  padding: 56px 0 48px;
  border-bottom: 1px solid #d9d5cc;
}

.faq-wrap .faq-list {
  margin-bottom: 22px;
}

/* 合作准备提示条 */
.guide-strip {
  padding: 40px 0 0;
}

.guide-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 32px;
  background-color: #f5f3ee;
  border: 1px solid #d9d5cc;
  border-left: 4px solid #9c2b1f;
}

.guide-strip-text h2 {
  font-size: 20px;
  line-height: 1.4;
  margin-bottom: 6px;
}

.guide-strip-text p {
  max-width: 640px;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.guide-strip .btn {
  flex: 0 0 auto;
}

/* --------------------------------------------------------------------------
   内页 · 通用标题区与页头
   -------------------------------------------------------------------------- */

.page-head {
  padding-top: 10px;
}

.page-intro {
  padding-top: 4px;
}

.page-lead {
  max-width: 760px;
  font-size: 16px;
  line-height: 1.9;
  color: #3a3a3a;
}

.page-hero {
  padding-top: 8px;
}

.page-figure,
.intro-figure {
  margin-top: 26px;
  max-width: 760px;
}

.page-figure img,
.intro-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.content-figure {
  margin-top: 8px;
  margin-bottom: 8px;
  max-width: 760px;
}

.content-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* 通用内容区 */
.content-section {
  margin-bottom: 32px;
}

.content-section h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.35;
  margin-bottom: 12px;
}

.content-section > p {
  max-width: 760px;
  font-size: 15px;
  line-height: 1.9;
  color: #3a3a3a;
  margin-bottom: 16px;
}

/* --------------------------------------------------------------------------
   服务场景页
   -------------------------------------------------------------------------- */

.category-band {
  margin-top: 4px;
  padding-bottom: 8px;
}

.band-title {
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.4;
  margin-bottom: 6px;
}

.band-note {
  color: #6b6b6b;
  margin-bottom: 16px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  color: #111111;
  border: 1px solid #111111;
  background-color: #ffffff;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.tag-link:hover {
  background-color: #111111;
  color: #ffffff;
}

.tag-count {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
}

.tag-link:hover .tag-count {
  color: #f5f3ee;
}

.read-note {
  margin-top: 28px;
  padding: 20px 24px;
  background-color: #f5f3ee;
  border-left: 3px solid #9c2b1f;
}

.read-note-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}

.read-note p {
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

.entry-list-section {
  margin-top: 40px;
}

.scene-group {
  margin-bottom: 36px;
  scroll-margin-top: 24px;
}

.scene-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  border-bottom: 2px solid #111111;
  margin-bottom: 0;
}

.scene-count {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: #9c2b1f;
}

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

.entry-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.1fr) auto;
  grid-template-areas:
    "name applicable deliverable link"
    "name precondition precondition link";
  column-gap: 24px;
  row-gap: 6px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid #d9d5cc;
}

.entry-name {
  grid-area: name;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.entry-title {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #111111;
}

.entry-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 2px 8px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #6b6b6b;
  background-color: #f5f3ee;
  border: 1px solid #d9d5cc;
}

.entry-applicable {
  grid-area: applicable;
  font-size: 13px;
  line-height: 1.75;
  color: #3a3a3a;
}

.entry-deliverable {
  grid-area: deliverable;
  font-size: 13px;
  line-height: 1.75;
  color: #3a3a3a;
}

.entry-precondition {
  grid-area: precondition;
  font-size: 13px;
  line-height: 1.75;
  color: #6b6b6b;
}

.entry-link {
  grid-area: link;
  align-self: center;
  padding-bottom: 2px;
  font-size: 13px;
  line-height: 1.6;
  color: #111111;
  border-bottom: 1px solid #9c2b1f;
  white-space: nowrap;
}

.entry-link:hover {
  color: #9c2b1f;
  border-bottom-width: 2px;
}

.unsuitable-section {
  margin-top: 40px;
}

.unsuitable-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 20px;
  border-top: 1px solid #d9d5cc;
  padding-top: 22px;
}

.unsuitable-item h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
}

.unsuitable-item p {
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.related-section {
  margin-top: 40px;
}

/* --------------------------------------------------------------------------
   交付流程页
   -------------------------------------------------------------------------- */

.layout-shell {
  display: grid;
  gap: 48px;
  align-items: start;
  margin-top: 32px;
}

.layout-shell.sidebar-right {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.layout-main {
  min-width: 0;
}

.layout-aside {
  min-width: 0;
}

.stage-list {
  display: flex;
  flex-direction: column;
  margin-top: 8px;
  border-top: 1px solid #111111;
}

.stage-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  column-gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #d9d5cc;
}

.stage-num {
  grid-row: 1 / span 3;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #9c2b1f;
  line-height: 1.2;
}

.stage-item h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
}

.stage-item p {
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

.stage-end {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
  font-style: normal;
}

.duty-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 18px;
}

.duty-col {
  padding: 20px 22px;
  background-color: #f5f3ee;
  border-top: 2px solid #111111;
}

.duty-col h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
}

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

.duty-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.duty-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background-color: #9c2b1f;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin-top: 16px;
}

.data-table {
  width: 100%;
  border-top: 1px solid #111111;
  border-bottom: 1px solid #111111;
  font-size: 14px;
}

.data-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #6b6b6b;
  background-color: #f5f3ee;
  border-bottom: 1px solid #d9d5cc;
}

.data-table tbody th {
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  color: #111111;
  vertical-align: top;
}

.data-table tbody td {
  padding: 12px 14px;
  color: #3a3a3a;
  line-height: 1.75;
  vertical-align: top;
  border-left: 1px solid #ece8df;
}

.data-table tbody tr:nth-child(even) {
  background-color: #f5f3ee;
}

.data-table tbody tr + tr th,
.data-table tbody tr + tr td {
  border-top: 1px solid #ece8df;
}

.aside-block {
  padding: 22px 24px;
  background-color: #f5f3ee;
  border: 1px solid #d9d5cc;
}

.aside-block + .aside-block {
  margin-top: 24px;
}

.aside-block h2 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}

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

.criteria-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: #3a3a3a;
}

.criteria-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background-color: #9c2b1f;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-links li a {
  font-size: 14px;
  color: #111111;
  border-bottom: 1px solid transparent;
}

.aside-links li a:hover {
  color: #9c2b1f;
  border-bottom-color: #9c2b1f;
}

/* --------------------------------------------------------------------------
   报价与条款页
   -------------------------------------------------------------------------- */

.terms-section {
  margin-top: 8px;
}

.terms-tier {
  margin-bottom: 32px;
}

.terms-tier-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #111111;
}

.limit-section {
  margin-top: 8px;
}

.limit-box {
  padding: 26px 28px;
  background-color: #f5f3ee;
  border: 1px solid #d9d5cc;
  border-left: 4px solid #9c2b1f;
}

.limit-lead {
  max-width: 760px;
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
  margin-bottom: 16px;
}

.limit-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.limit-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.limit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background-color: #9c2b1f;
}

.limit-list li strong {
  color: #111111;
  margin-right: 6px;
}

.change-section {
  margin-top: 40px;
}

.change-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border-top: 1px solid #111111;
}

.change-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  column-gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid #d9d5cc;
}

.change-index {
  grid-row: 1 / span 2;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 18px;
  font-weight: 600;
  color: #9c2b1f;
  line-height: 1.4;
}

.change-item h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
}

.change-item p {
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

/* --------------------------------------------------------------------------
   工作方式页
   -------------------------------------------------------------------------- */

.page-layout.single-column {
  margin-top: 32px;
}

.rhythm-list {
  display: flex;
  flex-direction: column;
  margin-top: 14px;
  border-top: 1px solid #111111;
}

.rhythm-item {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  grid-template-areas:
    "name freq"
    "name desc";
  column-gap: 32px;
  row-gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid #d9d5cc;
}

.rhythm-name {
  grid-area: name;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
}

.rhythm-freq {
  grid-area: freq;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
  line-height: 1.7;
}

.rhythm-desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

.fit-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 18px;
}

.fit-col {
  padding: 22px 24px;
  border-top: 2px solid #111111;
  background-color: #f5f3ee;
}

.fit-col-no {
  background-color: #ffffff;
  border-top-color: #9c2b1f;
  border: 1px solid #d9d5cc;
  border-top: 2px solid #9c2b1f;
}

.fit-col h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
}

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

.fit-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.fit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background-color: #9c2b1f;
}

/* --------------------------------------------------------------------------
   常见问题页
   -------------------------------------------------------------------------- */

.faq-group {
  margin-top: 36px;
  scroll-margin-top: 24px;
}

.group-head {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid #111111;
}

.group-index {
  display: block;
  margin-bottom: 6px;
  color: #9c2b1f;
}

.group-head h2 {
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.4;
  margin-bottom: 6px;
}

.group-desc {
  color: #6b6b6b;
  letter-spacing: 0.02em;
  font-family: "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
  font-size: 14px;
}

.related-block {
  margin-top: 44px;
}

.block-head {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #111111;
}

.block-head h2 {
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.4;
  margin-bottom: 6px;
}

.block-head p {
  font-size: 14px;
  line-height: 1.8;
  color: #6b6b6b;
}

/* --------------------------------------------------------------------------
   合作准备页
   -------------------------------------------------------------------------- */

.page-layout {
  margin-top: 32px;
}

.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.page-aside {
  min-width: 0;
}

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

.page-content .breadcrumb {
  max-width: none;
  margin: 0;
  padding: 0 0 8px;
}

.page-content .page-header {
  max-width: none;
  margin: 0;
  padding: 0 0 20px;
}

.aside-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
}

.aside-block > p {
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
  margin-bottom: 12px;
}

.checklist {
  display: flex;
  flex-direction: column;
  margin: 16px 0 0;
  border-top: 1px solid #111111;
}

.checklist-item {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 8px 28px;
  padding: 16px 0;
  border-bottom: 1px solid #d9d5cc;
}

.checklist-item dt {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #111111;
}

.checklist-item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

.checklist-require {
  display: block;
  margin-top: 6px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #6b6b6b;
}

.checklist-flag {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 8px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
  border: 1px solid #9c2b1f;
  background-color: #ffffff;
}

.checklist-done {
  display: inline-block;
  margin-left: 8px;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #6b6b6b;
}

.sequence-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border-top: 1px solid #111111;
}

.sequence-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  grid-template-areas:
    "num action"
    "num output"
    "num role";
  column-gap: 18px;
  row-gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid #d9d5cc;
}

.sequence-num {
  grid-area: num;
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 22px;
  font-weight: 600;
  color: #9c2b1f;
  line-height: 1.2;
}

.sequence-action {
  grid-area: action;
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: #111111;
}

.sequence-output {
  grid-area: output;
  font-size: 14px;
  line-height: 1.8;
  color: #3a3a3a;
}

.sequence-role {
  grid-area: role;
  font-size: 13px;
  line-height: 1.75;
  color: #6b6b6b;
}

.sequence-label {
  font-family: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: #9c2b1f;
  margin-right: 6px;
}

.omission-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border-top: 1px solid #111111;
}

.omission-item {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: 6px 28px;
  padding: 16px 0;
  border-bottom: 1px solid #d9d5cc;
}

.omission-item h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.omission-item p {
  font-size: 14px;
  line-height: 1.85;
  color: #3a3a3a;
}

.omission-fix {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: #6b6b6b;
}

/* --------------------------------------------------------------------------
   404 页
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  padding: 64px 0 24px;
}

.error-inner {
  max-width: 720px;
}

.error-title {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.25;
  margin: 12px 0 18px;
}

.error-desc {
  max-width: 620px;
  font-size: 16px;
  line-height: 1.9;
  color: #3a3a3a;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 40px;
}

.error-links {
  padding-top: 24px;
  border-top: 1px solid #d9d5cc;
}

.error-links h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 14px;
}

.error-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.error-links li a {
  display: inline-block;
  min-height: 44px;
  padding: 8px 0;
  font-size: 15px;
  color: #111111;
  border-bottom: 1px solid #9c2b1f;
}

.error-links li a:hover {
  color: #9c2b1f;
  border-bottom-width: 2px;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }

  .header-inner {
    padding: 16px 32px;
    gap: 18px;
  }

  .site-nav > ul {
    gap: 16px;
  }

  .nav-link {
    font-size: 14px;
  }

  .breadcrumb {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-header {
    padding-left: 32px;
    padding-right: 32px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 36px;
  }

  .process-grid {
    gap: 36px;
  }

  .terms-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    gap: 28px;
  }

  .style-grid {
    gap: 32px;
  }

  .layout-shell.sidebar-right {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 32px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 32px;
  }

  .entry-row {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr) auto;
    column-gap: 18px;
  }

  .footer-grid {
    gap: 24px;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 15px;
    line-height: 1.8;
  }

  .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  /* 页头切换为汉堡菜单 */
  .header-inner {
    padding: 14px 24px;
    gap: 12px;
    flex-wrap: nowrap;
  }

  .brand {
    font-size: 20px;
  }

  .site-nav {
    display: none;
  }

  .header-cta {
    margin-left: auto;
    padding: 7px 12px;
    font-size: 13px;
  }

  .nav-toggle {
    display: flex;
  }

  .breadcrumb {
    padding: 18px 24px 0;
  }

  .page-header {
    padding: 14px 24px 0;
  }

  .page-title {
    font-size: clamp(24px, 6vw, 30px);
  }

  .hero {
    padding: 28px 0 40px;
  }

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

  .hero-lead h1 {
    font-size: clamp(26px, 6.4vw, 34px);
  }

  .hero-actions {
    margin: 22px 0 24px;
  }

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

  .scene-preview,
  .process-preview,
  .terms-preview,
  .style-preview,
  .faq-preview {
    padding: 40px 0 32px;
  }

  .scene-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .scene-tab {
    flex: 0 0 auto;
  }

  .scene-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px 0;
  }

  .row-name {
    gap: 10px;
  }

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

  .process-lead p {
    max-width: none;
  }

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

  .terms-table thead {
    display: none;
  }

  .terms-table,
  .terms-table tbody,
  .terms-table tr,
  .terms-table th,
  .terms-table td {
    display: block;
    width: 100%;
  }

  .terms-table {
    border-top: 0;
  }

  .terms-table tbody tr {
    padding: 12px 0;
    border-bottom: 1px solid #d9d5cc;
    background-color: transparent;
  }

  .terms-table tbody tr:nth-child(even) {
    background-color: #f5f3ee;
  }

  .terms-table tbody th {
    width: 100%;
    padding: 0 12px 4px;
    border-left: 0;
  }

  .terms-table tbody td {
    padding: 2px 12px;
    border-left: 0;
    border-top: 0;
  }

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

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

  .guide-strip-inner {
    padding: 22px 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  .guide-strip .btn {
    width: 100%;
  }

  /* 内页 */
  .page-lead {
    font-size: 15px;
  }

  .page-figure,
  .intro-figure,
  .content-figure {
    max-width: none;
    margin-top: 20px;
  }

  .rule-double,
  .rule-thin,
  .rule-line,
  .section-divider {
    margin-top: 24px;
    margin-bottom: 24px;
  }

  /* 服务场景 */
  .tag-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .tag-link {
    flex: 0 0 auto;
  }

  .read-note {
    padding: 16px 18px;
  }

  .entry-row {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "name"
      "applicable"
      "deliverable"
      "precondition"
      "link";
    row-gap: 8px;
    padding: 16px 0;
  }

  .entry-link {
    justify-self: start;
    margin-top: 4px;
  }

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

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

  /* 交付流程：aside 前置 */
  .layout-shell.sidebar-right {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .layout-shell.sidebar-right .layout-aside {
    order: -1;
  }

  .stage-item {
    grid-template-columns: 48px minmax(0, 1fr);
    column-gap: 14px;
    padding: 16px 0;
  }

  .stage-num {
    font-size: 20px;
  }

  .duty-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .data-table thead {
    display: none;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table {
    border-top: 0;
  }

  .data-table tbody tr {
    padding: 12px 0;
    border-bottom: 1px solid #d9d5cc;
    background-color: transparent;
  }

  .data-table tbody tr:nth-child(even) {
    background-color: #f5f3ee;
  }

  .data-table tbody th {
    padding: 0 12px 4px;
    border-left: 0;
  }

  .data-table tbody td {
    padding: 2px 12px;
    border-left: 0;
    border-top: 0;
  }

  /* 报价条款 */
  .limit-box {
    padding: 20px 20px;
  }

  .change-item {
    grid-template-columns: 44px minmax(0, 1fr);
    column-gap: 14px;
  }

  /* 工作方式 */
  .rhythm-item {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "name"
      "freq"
      "desc";
    row-gap: 4px;
    padding: 16px 0;
  }

  .fit-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  /* FAQ */
  .faq-item summary {
    font-size: 16px;
    padding-right: 34px;
  }

  .faq-item > p,
  .faq-answer {
    padding-right: 20px;
  }

  /* 合作准备：aside 后置 */
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .page-layout.sidebar-left .page-aside {
    order: 2;
  }

  .page-layout.sidebar-left .page-content {
    order: 1;
  }

  .page-content .breadcrumb {
    padding: 0 0 6px;
  }

  .checklist-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px 0;
  }

  .sequence-step {
    grid-template-columns: 44px minmax(0, 1fr);
    column-gap: 14px;
  }

  .sequence-num {
    font-size: 20px;
  }

  .omission-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 0;
  }

  /* 页脚 */
  .site-footer {
    margin-top: 48px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-bottom: 28px;
  }

  .footer-copy {
    margin-left: 0;
  }

  /* 404 */
  .error-main {
    padding: 40px 0 16px;
  }

  .error-actions {
    margin: 22px 0 32px;
  }

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

@media (max-width: 480px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    padding: 12px 16px;
    gap: 10px;
  }

  .brand {
    font-size: 18px;
  }

  .header-cta {
    padding: 6px 10px;
    font-size: 12px;
  }

  .breadcrumb {
    padding: 14px 16px 0;
    gap: 6px;
  }

  .page-header {
    padding: 12px 16px 0;
  }

  .page-title {
    font-size: 24px;
  }

  .hero {
    padding: 22px 0 32px;
  }

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

  .hero-desc {
    font-size: 15px;
  }

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

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

  .hero-block {
    padding: 18px 18px;
  }

  .scene-preview,
  .process-preview,
  .terms-preview,
  .style-preview,
  .faq-preview {
    padding: 32px 0 26px;
  }

  .process-step {
    grid-template-columns: 44px minmax(0, 1fr);
    column-gap: 12px;
  }

  .process-step .step-index {
    font-size: 17px;
  }

  .terms-aside {
    padding: 18px 18px;
  }

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

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

  .guide-strip-inner {
    padding: 18px 16px;
  }

  .guide-strip-text h2 {
    font-size: 18px;
  }

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

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

  .stage-num {
    grid-row: auto;
    font-size: 18px;
  }

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

  .change-index {
    grid-row: auto;
    font-size: 16px;
  }

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

  .sequence-num {
    font-size: 18px;
  }

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

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

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

  .error-links ul {
    flex-direction: column;
    gap: 0;
  }

  .error-links li a {
    width: 100%;
    border-bottom: 1px solid #d9d5cc;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}