:root {
  --sy-navy: #0b1f3a;
  --sy-blue: #1769ff;
  --sy-tint: #eef5ff;
  --sy-text: #1f2937;
  --sy-muted: #6b7280;
  --sy-bg: #ffffff;
  --sy-border: #e5e7eb;
  --sy-shadow: 0 8px 24px rgb(11 31 58 / 6%);
  --sy-radius: 12px;
  --sy-max: 1280px;
  --sy-header: 72px;
  --sy-ease: 240ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--sy-text);
  background: var(--sy-bg);
  font-family: Inter, "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  overflow-x: clip;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

.section {
  padding: 88px 0;
}

.section--tint {
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.section__head {
  max-width: none;
  margin-bottom: 40px;
}

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

.section__more {
  margin-top: 28px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--sy-blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--sy-navy);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.section h2 {
  font-size: clamp(28px, 3vw, 36px);
}

.lead {
  margin: 12px 0 0;
  color: var(--sy-muted);
  font-size: 16px;
}

.list-note {
  margin: 0 0 24px;
  color: var(--sy-muted);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

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

.grid-services--single,
.grid-2:has(> article:only-child) {
  grid-template-columns: minmax(0, 560px);
}

.card {
  border: 1px solid var(--sy-border);
  border-radius: var(--sy-radius);
  background: #fff;
  box-shadow: var(--sy-shadow);
  transition:
    transform var(--sy-ease),
    box-shadow var(--sy-ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgb(11 31 58 / 10%);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition:
    background var(--sy-ease),
    color var(--sy-ease),
    border-color var(--sy-ease);
}

.btn--primary {
  color: #fff;
  background: var(--sy-blue);
}

.btn--primary:hover {
  background: #0f5aee;
}

.btn--ghost {
  color: var(--sy-navy);
  background: #fff;
  border-color: #dbe4f0;
}

.btn--ghost:hover,
.btn--text:hover {
  border-color: var(--sy-blue);
  color: var(--sy-blue);
}

.btn--text {
  min-height: auto;
  padding: 0;
  color: var(--sy-blue);
  background: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--sy-header);
  border-bottom: 1px solid rgb(229 231 235 / 70%);
  background: rgb(255 255 255 / 92%);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 18px rgb(11 31 58 / 6%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  height: var(--sy-header);
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-weight: 800;
  color: var(--sy-navy);
}

.brand img,
.brand svg {
  height: 36px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  display: block;
}

.brand__name {
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list li {
  flex: 0 0 auto;
}

.nav-list a {
  display: block;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.nav-list a.is-active,
.nav-list a:hover {
  color: var(--sy-blue);
}

.header-cta {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 10px;
}

.menu-toggle {
  display: none !important;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 88px;
  background:
    radial-gradient(circle at 80% 10%, rgb(23 105 255 / 12%), transparent 28%),
    linear-gradient(180deg, #f5f9ff 0%, #ffffff 72%);
}

.hero--photo {
  display: flex;
  align-items: center;
  min-height: 780px;
  padding: 72px 0 96px;
  background: #0b1f3a;
  color: #fff;
}

.hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 42%;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgb(8 16 30 / 42%) 0%, rgb(8 16 30 / 36%) 42%, rgb(8 16 30 / 58%) 100%);
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero--photo .eyebrow {
  color: rgb(255 255 255 / 78%);
}

.hero--photo h1,
.hero--photo .lead {
  color: #fff;
}

.hero--photo .lead {
  font-size: 18px;
  color: rgb(255 255 255 / 88%);
}

.hero--photo .chip {
  border-color: rgb(255 255 255 / 28%);
  background: rgb(255 255 255 / 12%);
  color: #fff;
}

.hero--photo .btn--primary {
  background: #fff;
  color: var(--sy-navy);
}

.hero--photo .btn--primary:hover {
  background: #f3f6fb;
}

.hero--photo .btn--ghost {
  border-color: rgb(255 255 255 / 55%);
  color: #fff;
  background: transparent;
}

.hero--photo .btn--ghost:hover {
  background: rgb(255 255 255 / 12%);
}

.hero--photo .keyword-row,
.hero--photo .hero-actions {
  justify-content: center;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
}

.hero .lead {
  font-size: 18px;
}

.keyword-row,
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.chip {
  padding: 6px 10px;
  border: 1px solid #d7e4ff;
  border-radius: 999px;
  background: rgb(255 255 255 / 80%);
  color: var(--sy-navy);
  font-size: 12px;
  font-weight: 700;
}

.hero-visual {
  min-height: 320px;
  border: 1px solid #dbe7ff;
  border-radius: 20px;
  overflow: hidden;
  background: #eef5ff;
}

.hero-visual__img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.page-hero {
  padding: 48px 0 12px;
}

.page-hero__layout {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-hero__layout--media {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

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

.page-hero__poster {
  margin: 0;
  border: 1px solid #dbe7ff;
  border-radius: 20px;
  overflow: hidden;
  background: #eef5ff;
  min-height: 220px;
}

.page-hero__poster img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.page-hero--bleed {
  position: relative;
  display: flex;
  align-items: flex-end;
  /* 与首页 PC Hero 对齐：桌面固定 780px */
  width: 100%;
  height: 780px;
  padding: 0;
  overflow: hidden;
  color: #fff;
  background: #0b1f3a;
}

.page-hero__bleed-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 42%;
}

.page-hero__bleed-scrim {
  position: absolute;
  inset: 0;
  /* 文案侧加深遮罩，保证白字对比度；右侧保留画面 */
  background:
    linear-gradient(90deg, rgb(8 16 30 / 72%) 0%, rgb(8 16 30 / 48%) 38%, rgb(8 16 30 / 18%) 62%, rgb(8 16 30 / 6%) 100%),
    linear-gradient(180deg, rgb(8 16 30 / 36%) 0%, rgb(8 16 30 / 16%) 36%, rgb(8 16 30 / 68%) 100%);
  pointer-events: none;
}

.page-hero__bleed-copy {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin-right: auto;
  padding-top: calc(var(--sy-header) + 28px);
  padding-bottom: 56px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.page-hero--bleed .lead {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: #fff;
  text-shadow: 0 1px 2px rgb(0 0 0 / 55%);
}

.page-hero--bleed .eyebrow {
  color: rgb(255 255 255 / 92%);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-shadow: 0 1px 2px rgb(0 0 0 / 45%);
}

.page-hero--bleed h1:not(.sr-only) {
  margin: 8px 0 14px;
  color: #fff;
  font-size: clamp(34px, 4.8vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-shadow: 0 1px 2px rgb(0 0 0 / 60%);
}

.page-hero--bleed .page-hero__note {
  margin: 12px 0 0;
  max-width: 36rem;
  color: rgb(255 255 255 / 94%);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  text-shadow: 0 1px 2px rgb(0 0 0 / 50%);
}

.page-hero--bleed .hero-actions {
  margin-top: 28px;
}

.page-hero--bleed .btn--primary {
  background: #fff;
  color: var(--sy-navy);
}

.page-hero--bleed .btn--primary:hover {
  background: #f3f6fb;
}

.page-hero--bleed .btn--ghost {
  border-color: rgb(255 255 255 / 55%);
  color: #fff;
  background: transparent;
}

.page-hero--bleed .btn--ghost:hover {
  background: rgb(255 255 255 / 12%);
}

/* 栏目 Hero：无面包屑，文案区整体上移 */
.page-hero--bleed-centered {
  align-items: center;
}

.page-hero--bleed-centered .page-hero__bleed-copy {
  padding-top: calc(var(--sy-header) + 16px);
  padding-bottom: 40px;
}

.page-hero--bleed-centered h1:not(.sr-only) {
  margin-top: 0;
}

.breadcrumb--on-dark {
  color: rgb(255 255 255 / 88%);
  text-shadow: 0 1px 2px rgb(0 0 0 / 45%);
}

.breadcrumb--on-dark a {
  color: #fff;
}

.breadcrumb--on-dark a:hover {
  color: #fff;
  opacity: 0.9;
}

.card-media {
  margin: -24px -24px 18px;
  border-bottom: 1px solid var(--sy-border);
  overflow: hidden;
  background: #eef5ff;
  aspect-ratio: 16 / 10;
}

.card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 中稿记录：海报墙，不套通用图文卡片 */
.result-card {
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  border-radius: 0;
}

.result-card:hover {
  transform: none;
  box-shadow: none;
}

.result-card__frame {
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  box-shadow:
    0 0 0 1px rgb(11 31 58 / 6%),
    0 12px 32px rgb(11 31 58 / 8%);
  transition:
    transform var(--sy-ease),
    box-shadow var(--sy-ease);
}

.result-card:hover .result-card__frame {
  transform: translateY(-6px);
  box-shadow:
    0 0 0 1px rgb(11 31 58 / 8%),
    0 22px 48px rgb(11 31 58 / 14%);
}

.result-card__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.grid-results {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px 20px;
  align-items: start;
}

.results-empty {
  margin: 8px 0 0;
  color: var(--sy-muted);
  text-align: center;
}

/* 导师卡头像：对齐马拉AI 圆形实拍风格（80px 圆裁切 + 居中姓名） */
.mentor-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 20px 24px;
  border-radius: 16px;
}

.mentor-card__avatar {
  width: 80px;
  height: 80px;
  margin: 0 0 12px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: #f5f7fc;
}

.mentor-card__avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.mentor-card h3 {
  font-size: 18px;
  font-weight: 600;
}

.mentor-card__title,
.mentor-card__intro {
  margin: 4px 0 0;
  max-width: 100%;
  color: var(--sy-muted);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
}

.mentor-profile__text {
  white-space: pre-line;
}

.mentor-profile__list {
  margin: 0 0 8px;
  padding-left: 1.2em;
}

.mentor-profile__list li {
  margin: 0 0 8px;
}

.mentor-profile__levels {
  font-size: 16px;
  font-weight: 600;
}

.mentor-card .meta {
  justify-content: center;
  margin: 8px 0 0;
}

.mentor-card .tag {
  padding: 3.5px 6px;
  max-width: 100px;
  border: 0.5px solid #e5e6eb;
  border-radius: 4px;
  background: #fff;
  color: #4e5969;
  font-size: 12px;
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mentor-card .hero-actions {
  justify-content: center;
  margin-top: 20px;
}

.page-hero__poster--avatar {
  width: 200px;
  height: 200px;
  max-width: 200px;
  margin-left: auto;
  aspect-ratio: 1 / 1;
  min-height: 0;
  border: none;
  border-radius: 50%;
  overflow: hidden;
  background: #f5f7fc;
}

.page-hero__poster--avatar img {
  width: 100%;
  height: 100%;
  min-height: 0;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center;
}

.service-card,
.research-card,
.why-card {
  padding: 24px;
}

.why-card p {
  margin: 0;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  font-style: normal;
  letter-spacing: 0;
  line-height: 1.65;
  color: var(--sy-muted);
}

.article-card {
  padding: 0;
  overflow: hidden;
}

.insights-coming {
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px dashed rgb(23 105 255 / 28%);
  border-radius: 14px;
  background: #f8fbff;
}

.insights-coming p {
  margin: 0;
  color: var(--sy-muted);
  font-size: 14px;
}

.insights-coming--page {
  margin-top: 0;
  padding: 48px 32px;
  text-align: center;
}

.insights-coming--page h2 {
  margin-bottom: 10px;
  font-size: clamp(24px, 3vw, 32px);
}

.insights-coming--page p {
  margin: 0 auto 24px;
  max-width: 36rem;
  font-size: 16px;
}

.insights-coming--page .hero-actions {
  justify-content: center;
}

.about-timeline {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 20px;
  padding: 0 0 28px 12px;
}

.about-timeline__item:last-child {
  padding-bottom: 0;
}

.about-timeline__item::before {
  content: "";
  position: absolute;
  left: 88px;
  top: 10px;
  bottom: -4px;
  width: 2px;
  background: linear-gradient(180deg, rgb(23 105 255 / 45%), rgb(23 105 255 / 8%));
}

.about-timeline__item:last-child::before {
  display: none;
}

.about-timeline__item::after {
  content: "";
  position: absolute;
  left: 82px;
  top: 8px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--sy-blue);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 4px rgb(23 105 255 / 12%);
}

.about-timeline__year {
  color: var(--sy-blue);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.about-timeline__body {
  padding-left: 20px;
}

.about-timeline__body strong {
  display: block;
  color: var(--sy-navy);
  font-size: 18px;
  font-weight: 700;
}

.about-timeline__body p {
  margin: 8px 0 0;
  color: var(--sy-muted);
  font-size: 15px;
  line-height: 1.7;
}

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

.insight-hub__panel {
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 36px 32px;
  border: 1px solid var(--sy-border);
  border-radius: 20px;
  background:
    linear-gradient(160deg, #f4f8ff 0%, #ffffff 55%),
    #fff;
  box-shadow: var(--sy-shadow);
  transition:
    transform var(--sy-ease),
    box-shadow var(--sy-ease),
    border-color var(--sy-ease);
}

.insight-hub__panel:hover {
  transform: translateY(-4px);
  border-color: rgb(23 105 255 / 35%);
  box-shadow: 0 16px 36px rgb(11 31 58 / 10%);
}

.insight-hub__panel h2 {
  margin: 4px 0 12px;
  font-size: clamp(28px, 3vw, 36px);
}

.insight-hub__panel > p:not(.eyebrow) {
  margin: 0;
  flex: 1;
  color: var(--sy-muted);
  font-size: 16px;
  line-height: 1.7;
}

.insight-hub__cta {
  margin-top: 28px;
  color: var(--sy-blue);
  font-size: 15px;
  font-weight: 700;
}

.article-card__hit {
  display: block;
  padding: 24px;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.article-card__hit:hover h3,
.article-card__hit:hover .article-card__more {
  color: var(--sy-blue);
}

.article-card__more {
  margin: 12px 0 0;
  font-size: 14px;
  font-weight: 600;
}

.article-card .card-media {
  margin: -24px -24px 18px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--sy-muted);
  font-size: 14px;
}

.card h3 {
  font-size: 20px;
}

.card p,
.meta {
  color: var(--sy-muted);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
  font-size: 13px;
}

.tag {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--sy-tint);
  color: var(--sy-navy);
}

.paper-levels {
  margin: 0 0 36px;
  padding: 28px 28px 24px;
  border: 1px solid rgb(23 105 255 / 22%);
  border-radius: 20px;
  background:
    linear-gradient(180deg, #f4f8ff 0%, #ffffff 48%),
    var(--sy-navy);
  box-shadow: 0 12px 32px rgb(11 31 58 / 8%);
}

.paper-levels__head {
  margin-bottom: 20px;
}

.paper-levels__head h3 {
  margin: 0 0 6px;
  color: var(--sy-navy);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.paper-levels__head p:last-child {
  margin: 0;
  color: var(--sy-muted);
  font-size: 14px;
}

.paper-levels__list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.paper-levels__item {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 14px 16px;
  border: 1px solid var(--sy-border);
  border-radius: 14px;
  background: #fff;
  cursor: default;
  user-select: none;
  pointer-events: none;
}

.paper-levels__item strong {
  color: var(--sy-navy);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.process-flow {
  display: grid;
  grid-template-columns: repeat(var(--process-cols, 5), minmax(0, 1fr));
  grid-template-rows: auto 28px auto;
  column-gap: 28px;
  row-gap: 4px;
  align-items: stretch;
}

.process-flow__cell {
  position: relative;
  min-width: 0;
}

.process-flow__turn {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sy-blue);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.process-flow__cell.is-arrow-right::after,
.process-flow__cell.is-arrow-left::before {
  position: absolute;
  top: 50%;
  color: var(--sy-blue);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  transform: translateY(-50%);
}

.process-flow__cell.is-arrow-right::after {
  content: "→";
  right: -22px;
}

.process-flow__cell.is-arrow-left::before {
  content: "←";
  left: -22px;
}

.process-flow__node {
  height: 100%;
  padding: 16px 12px;
  border: 1px solid var(--sy-border);
  border-radius: var(--sy-radius);
  background: #fff;
}

.process-flow__index {
  display: block;
  margin-bottom: 8px;
  color: var(--sy-blue);
  font-size: 12px;
  font-weight: 800;
}

.process-flow__title {
  display: block;
  color: var(--sy-navy);
  font-size: 14px;
  line-height: 1.4;
}

/* —— Service detail (/service/1v1) —— */
.page-hero--service {
  padding: 40px 0 8px;
  background: linear-gradient(180deg, #f7faff 0%, #ffffff 72%);
}

.page-hero--service h1 {
  margin-top: 8px;
  font-size: clamp(34px, 4.2vw, 48px);
  max-width: 12ch;
  line-height: 1.15;
}

.page-hero--service .lead {
  max-width: 36rem;
  font-size: 17px;
  line-height: 1.7;
}

.page-hero__poster--service {
  border: 0;
  border-radius: 18px;
  background: #eef3f8;
  min-height: 0;
  box-shadow: 0 12px 36px rgb(11 31 58 / 10%);
  overflow: hidden;
}

.page-hero__poster--service img {
  min-height: 0;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center center;
  display: block;
}

.svc-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: start;
}

.svc-split__head h2 {
  margin: 0 0 12px;
}

.svc-split__head .lead {
  margin: 0;
  max-width: 28rem;
}

.svc-audience {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: audience;
  border-top: 1px solid var(--sy-border);
}

.svc-audience li {
  counter-increment: audience;
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 16px;
  align-items: baseline;
  margin: 0;
  padding: 18px 0;
  border-bottom: 1px solid var(--sy-border);
  color: var(--sy-navy);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
}

.svc-audience li::before {
  content: counter(audience, decimal-leading-zero);
  color: var(--sy-blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.svc-phases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 40px;
}

.svc-phase h3 {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--sy-navy);
  color: var(--sy-navy);
  font-size: 18px;
}

.svc-phase ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.svc-phase li {
  position: relative;
  margin: 0;
  padding: 8px 0 8px 14px;
  color: var(--sy-text);
  font-size: 15px;
  line-height: 1.55;
}

.svc-phase li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sy-blue);
}

.svc-levels {
  margin: 48px 0 0;
  padding: 28px 32px;
  border: 1px solid rgb(23 105 255 / 22%);
  border-radius: 16px;
  background:
    linear-gradient(180deg, #f5f9ff 0%, #ffffff 100%);
}

.svc-levels__title {
  margin: 0 0 16px;
  color: var(--sy-navy);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.svc-levels__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.svc-levels__list li {
  padding: 12px 16px;
  border: 1px solid rgb(23 105 255 / 28%);
  border-radius: 10px;
  background: #fff;
  color: var(--sy-navy);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  cursor: default;
  user-select: none;
  pointer-events: none;
}

.svc-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--sy-border);
}

.svc-steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 18px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--sy-border);
}

.svc-steps__index {
  color: var(--sy-blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.svc-steps__title {
  color: var(--sy-navy);
  font-size: 17px;
  font-weight: 600;
}

.svc-boundary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--sy-border);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}

.svc-boundary__col {
  padding: 28px 32px;
}

.svc-boundary__col + .svc-boundary__col {
  border-left: 1px solid var(--sy-border);
}

.svc-boundary__col--muted {
  background: #f8fafc;
}

.svc-boundary__col h3 {
  margin: 0 0 16px;
  color: var(--sy-navy);
  font-size: 16px;
}

.svc-boundary__col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.svc-boundary__col li {
  position: relative;
  margin: 0 0 10px;
  padding-left: 14px;
  color: var(--sy-text);
  font-size: 15px;
  line-height: 1.55;
}

.svc-boundary__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1.5px;
  background: var(--sy-blue);
}

.svc-boundary__col--muted li::before {
  background: #94a3b8;
}

.svc-boundary__link {
  margin: 24px 0 0;
  color: var(--sy-muted);
  font-size: 15px;
}

.svc-boundary__link a {
  margin-left: 8px;
  color: var(--sy-blue);
  font-weight: 600;
}

.svc-faq--narrow {
  max-width: 760px;
}

.svc-faq {
  max-width: 860px;
}

.svc-faq__list {
  display: grid;
  gap: 10px;
}

.svc-faq__item {
  border: 1px solid var(--sy-border);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}

.svc-faq__item[open] {
  border-color: rgb(23 105 255 / 28%);
}

.svc-faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.svc-faq__item summary::-webkit-details-marker {
  display: none;
}

.svc-faq__item summary::after {
  content: "+";
  color: var(--sy-blue);
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
}

.svc-faq__item[open] summary::after {
  content: "–";
}

.svc-faq__q {
  color: var(--sy-navy);
  font-size: 16px;
  font-weight: 600;
}

.svc-faq__item p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--sy-muted);
  font-size: 15px;
  line-height: 1.7;
}

.section--cta {
  background: linear-gradient(180deg, #f5f9ff 0%, #eef5ff 100%);
  padding: 72px 0;
}

.svc-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.svc-cta__copy h2 {
  margin: 0 0 12px;
}

.svc-cta__copy .lead {
  margin: 0 0 24px;
  max-width: 36rem;
}

.svc-cta__qr {
  margin: 0;
}

.svc-cta__qr img {
  display: block;
  width: 168px;
  height: 168px;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--sy-border);
}

.page-hero__note {
  margin: 12px 0 0;
  color: var(--sy-muted);
  font-size: 15px;
}

.wechat-cta {
  display: grid;
  grid-template-columns: 1.4fr 200px;
  gap: 32px;
  align-items: center;
  padding: 32px;
  border: 1px solid var(--sy-border);
  border-radius: 20px;
  background: linear-gradient(135deg, #f8fbff 0%, #ffffff 70%);
  overflow: visible;
}

.wechat-cta__qr,
.contact-wechat__qr {
  margin: 0;
  overflow: visible;
}

.wechat-cta__qr img,
.contact-wechat__qr img {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--sy-border);
  transform-origin: center center;
  transition: transform 0.22s ease;
  cursor: pointer;
}

.wechat-cta__qr img:hover,
.contact-wechat__qr img:hover {
  transform: scale(1.12);
}

.official-accounts__head {
  text-align: center;
}

.official-accounts__head .lead {
  margin-left: auto;
  margin-right: auto;
  max-width: 36rem;
}

.official-accounts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.official-account {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 148px;
  gap: 24px;
  align-items: center;
  padding: 28px 32px;
  border: 1px solid var(--sy-border);
  border-radius: 20px;
  background: #fff;
}

.official-account__copy h3 {
  margin: 6px 0 10px;
  color: var(--sy-navy);
  font-size: 22px;
}

.official-account__copy .lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.official-account__hint {
  margin: 14px 0 0;
  color: var(--sy-muted);
  font-size: 13px;
}

.official-account__qr {
  margin: 0;
  text-align: center;
}

.official-account__qr img {
  display: block;
  width: 148px;
  height: 148px;
  margin: 0 auto;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--sy-border);
  transition: transform 0.22s ease;
}

.official-account__qr img:hover {
  transform: scale(1.06);
}

.official-account__qr figcaption {
  margin-top: 10px;
  color: var(--sy-muted);
  font-size: 13px;
  font-weight: 600;
}

.contact-wechat {
  display: grid;
  grid-template-columns: 1.2fr 240px;
  gap: 40px;
  align-items: start;
}

.contact-wechat__qr {
  text-align: center;
}

.contact-wechat__qr figcaption {
  margin-top: 12px;
  color: var(--sy-muted);
  font-size: 14px;
}

.modal__panel--qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 420px;
  text-align: center;
}

.modal__panel--qr .lead,
.modal__panel--qr p {
  margin-left: auto;
  margin-right: auto;
}

.wechat-modal__qr {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 20px 0;
}

.wechat-modal__qr img {
  display: block;
  width: 220px;
  height: 220px;
  margin: 0 auto;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--sy-border);
}

.modal__panel--qr .hero-actions {
  justify-content: center;
}

.cta-band {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 32px;
  border-radius: 20px;
  background: var(--sy-navy);
  color: #fff;
}

.cta-band h2 {
  color: #fff;
}

.site-footer {
  padding: 56px 0 24px;
  background: #071526;
  color: #dbe7f5;
}

.footer-simple {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}

.site-footer a:hover,
.site-footer h3 {
  color: #fff;
}

.site-footer h3 {
  margin-bottom: 14px;
  font-size: 14px;
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid rgb(255 255 255 / 10%);
  color: #93a4bb;
  font-size: 13px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.filter-btn {
  padding: 8px 12px;
  border: 1px solid var(--sy-border);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
}

.filter-btn.is-active {
  color: #fff;
  background: var(--sy-navy);
  border-color: var(--sy-navy);
}

.prose {
  max-width: 820px;
}

.prose h2 {
  margin: 32px 0 12px;
  font-size: 24px;
}

.floating-cta,
.mobile-cta {
  position: fixed;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--sy-ease),
    transform var(--sy-ease),
    visibility var(--sy-ease);
}

.floating-cta {
  right: 20px;
  top: 50%;
  transform: translate(16px, -50%);
}

.floating-cta.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(0, -50%);
}

.floating-cta__card {
  width: 148px;
  padding: 16px 14px 14px;
  border: 1px solid var(--sy-border);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 16px 40px rgb(11 31 58 / 14%);
  text-align: center;
}

.floating-cta__label {
  margin: 0 0 10px;
  color: var(--sy-navy);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
}

.floating-cta__qr {
  margin: 0;
  overflow: hidden;
  border-radius: 10px;
  background: #fff;
}

.floating-cta__qr img {
  display: block;
  width: 120px;
  height: 120px;
  margin: 0 auto;
  object-fit: contain;
}

.floating-cta__hint {
  margin: 10px 0 0;
  color: var(--sy-muted);
  font-size: 12px;
  line-height: 1.4;
}

.floating-cta__fallback,
.mobile-cta a {
  min-height: 44px;
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--sy-navy);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.mobile-cta.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}

.mobile-cta {
  display: none;
  left: 16px;
  right: 16px;
  bottom: 16px;
  flex-direction: row;
  transform: translateY(12px);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgb(7 21 38 / 48%);
}

.modal.is-open {
  display: grid;
}

.modal__panel {
  width: min(100%, 560px);
  max-height: 90vh;
  overflow: auto;
  padding: 28px;
  border-radius: 16px;
  background: #fff;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.form-grid label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--sy-border);
  border-radius: 10px;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  display: none;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--sy-navy);
  color: #fff;
}

.toast.is-visible {
  display: block;
}

.empty-state {
  padding: 48px 24px;
  border: 1px dashed var(--sy-border);
  border-radius: var(--sy-radius);
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* —— Tablet / narrow desktop —— */
@media (max-width: 1024px) {
  :root {
    --sy-header: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 72px 0;
  }

  .grid-4,
  .grid-3,
  .paper-levels__list {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .svc-split,
  .svc-phases,
  .svc-boundary,
  .svc-cta {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .svc-boundary__col + .svc-boundary__col {
    border-left: 0;
    border-top: 1px solid var(--sy-border);
  }

  .process-flow {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .process-flow__cell,
  .process-flow__turn {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  .process-flow__cell.is-arrow-right::after,
  .process-flow__cell.is-arrow-left::before {
    content: none;
  }

  .process-flow__cell:not(:last-of-type)::after {
    content: "↓";
    position: absolute;
    left: 50%;
    right: auto;
    top: auto;
    bottom: -18px;
    color: var(--sy-blue);
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
    transform: translateX(-50%);
  }

  .process-flow__turn {
    display: none;
  }

  .footer-simple,
  .wechat-cta,
  .contact-wechat,
  .official-accounts {
    grid-template-columns: 1fr;
  }

  .official-account {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding: 24px 20px;
  }

  .hero {
    padding: 48px 0 64px;
  }

  .hero--photo {
    min-height: 520px;
    padding: 56px 0 72px;
  }

  .hero__grid,
  .page-hero__layout--media {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-visual,
  .hero-visual__img {
    min-height: 220px;
  }

  .page-hero__poster {
    min-height: 180px;
    order: -1;
  }

  .page-hero__poster img {
    min-height: 180px;
  }

  .page-hero__poster--avatar {
    order: 0;
    width: 140px;
    height: 140px;
    max-width: 140px;
    margin: 0 auto;
    min-height: 0;
  }

  .page-hero__poster--avatar img {
    min-height: 0;
  }

  .floating-cta {
    display: none;
  }

  .site-header__inner {
    gap: 10px;
  }

  .nav {
    display: flex;
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    mask-image: linear-gradient(90deg, #000 0%, #000 92%, transparent 100%);
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav-list {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 14px;
  }

  .nav-list a {
    font-size: 13px;
    padding: 8px 0;
  }

  .header-cta .btn {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .mobile-cta {
    display: flex;
    transform: translateY(12px);
  }

  body:has(.mobile-cta.is-visible) {
    padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  }

  .cta-band {
    flex-direction: column;
    align-items: stretch;
    text-align: left;
  }

  .cta-band .hero-actions {
    margin-top: 0;
  }
}

/* —— Phone —— */
@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

.section__head {
  margin-bottom: 28px;
}

.section__more {
  margin-top: 28px;
  text-align: center;
}

  .page-hero {
    padding: 28px 0 8px;
  }

  .page-hero--bleed {
    /* 窄屏优先保证文案可读，高度略抬一点，避免构图被压成细条 */
    height: clamp(340px, 68vw, 480px);
  }

  .page-hero__bleed-copy {
    padding-bottom: 40px;
  }

  .page-hero--bleed-centered .page-hero__bleed-copy {
    padding-top: calc(var(--sy-header) + 8px);
    padding-bottom: 28px;
  }

  .page-hero--bleed .lead {
    font-size: 15px;
  }

  .page-hero h1,
  .hero h1 {
    font-size: clamp(28px, 8vw, 36px);
  }

  .hero .lead,
  .lead {
    font-size: 15px;
  }

  .hero {
    padding: 32px 0 48px;
  }

  .hero--photo {
    min-height: 460px;
    padding: 40px 0 56px;
  }

  .hero-visual,
  .hero-visual__img {
    min-height: 180px;
    border-radius: 16px;
  }

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

  .keyword-row {
    margin-top: 20px;
    gap: 8px;
  }

  .chip {
    font-size: 11px;
    padding: 5px 8px;
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .grid-services--single {
    grid-template-columns: 1fr;
  }

  .grid-results {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

  .insight-hub {
    grid-template-columns: 1fr;
  }

  .svc-cta {
    justify-items: start;
  }

  .svc-levels__list {
    grid-template-columns: 1fr;
  }

  .about-timeline__item {
    grid-template-columns: 72px 1fr;
    gap: 14px;
    padding-left: 4px;
  }

  .about-timeline__item::before {
    left: 72px;
  }

  .about-timeline__item::after {
    left: 66px;
  }

  .about-timeline__year {
    font-size: 16px;
  }

  .about-timeline__body {
    padding-left: 14px;
  }

  .svc-faq__item summary {
    padding: 16px;
  }

  .svc-faq__item p {
    padding: 0 16px 16px;
  }

  .process-flow {
    display: flex;
    flex-direction: column;
  }

  .footer-simple,
  .wechat-cta,
  .contact-wechat,
  .official-accounts {
    grid-template-columns: 1fr;
  }

  .official-account {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding: 24px 20px;
  }

  .card,
  .service-card,
  .research-card,
  .why-card {
    padding: 18px;
  }

  .card-media {
    margin: -18px -18px 14px;
  }

  .mentor-card {
    padding: 32px 16px 18px;
  }

  .mentor-card__avatar {
    width: 80px;
    height: 80px;
  }

  .card h3 {
    font-size: 18px;
  }

  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin-left: -16px;
    margin-right: -16px;
    padding: 0 16px 4px;
    gap: 8px;
  }

  .filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex: 0 0 auto;
    white-space: nowrap;
    min-height: 40px;
  }

  .cta-band {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .site-footer {
    padding: 40px 0 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }

  .prose {
    max-width: 100%;
  }

  .prose h2 {
    font-size: 20px;
    margin: 24px 0 10px;
  }

  .modal {
    padding: 12px;
    align-items: end;
  }

  .modal__panel {
    width: 100%;
    max-height: min(92vh, 100%);
    padding: 20px 16px calc(20px + env(safe-area-inset-bottom, 0px));
    border-radius: 16px 16px 12px 12px;
  }

  .form-grid input,
  .form-grid select,
  .form-grid textarea {
    font-size: 16px; /* avoid iOS zoom */
  }

  .mobile-cta {
    left: 12px;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    gap: 8px;
  }

  .mobile-cta a {
    flex: 1;
    text-align: center;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 8px;
    font-size: 13px;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: calc(76px + env(safe-area-inset-bottom, 0px));
    text-align: center;
  }

  .brand__name {
    font-size: 16px;
  }

  .brand img,
  .brand svg {
    height: 30px;
  }

  .header-cta {
    display: none;
  }

  .nav-list {
    gap: 12px;
  }

  .nav-list a {
    font-size: 13px;
  }

  .post-nav {
    flex-direction: column !important;
    align-items: stretch !important;
  }
}

/* —— Small phone —— */
@media (max-width: 380px) {
  .mobile-cta a {
    font-size: 12px;
    padding: 10px 4px;
  }

  .hero-actions {
    gap: 8px;
  }
}