/* Modo Space — design tokens, DIN typography, responsive layout */

@font-face {
  font-family: "DIN Next LT Pro";
  src: url("Fonts/DINNextLTPro-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "DIN Next LT Pro";
  src: url("Fonts/DINNextLTPro-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "DIN";
  src: url("Fonts/DIN-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "DIN";
  src: url("Fonts/DIN-Bold.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --color-blue: #005691;
  --color-green: #8cc63f;
  --color-sky: #34a8f2;
  --color-navy: #1b2238;
  --color-text: #444444;
  --color-heading: #231f20;
  --color-muted-bg: #f4f7f9;
  --footer-bg: #e8e6f0;
  --font-sans: "DIN Next LT Pro", "DIN", "Helvetica Neue", Arial, sans-serif;
  --container: 1280px;
  --section-pad-y: 4.5rem;
  --header-h: 84px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: #fff;
}

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

figure {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.container.narrow {
  max-width: 900px;
}

.center {
  text-align: center;
}

/* —— Header —— */
.site-header {
  position: relative;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  padding-block: 0.25rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo {
  display: block;
  width: auto;
  height: 48px;
  max-width: min(200px, 48vw);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--color-navy);
  border-radius: 1px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.95rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
}

.btn-nav {
  background: var(--color-navy);
  color: #fff !important;
  margin-left: 0.25rem;
}

.btn-nav:hover,
.btn-nav:focus-visible {
  background: #2a344f;
  color: #fff !important;
}

/* —— Hero —— */
.hero {
  position: relative;
}

.hero-top {
  background: #fff;
  padding-top: 0.3rem;
}

.hero-grid {
  position: relative;
  min-height: min(56vw, 510px);
  padding-bottom: 0.6rem;
}

.hero-taglines {
  position: relative;
  z-index: 2;
  width: max-content;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 2.9rem 0 0;
}

.hero-line {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.hero-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  transform: translateY(-2px);
}

.hero-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  display: block;
}

.hero-line-text {
  display: block;
  font-weight: 700;
  font-size: clamp(1rem, 1.7vw + 0.7rem, 3.15rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.08;
}

.hero-visual {
  position: absolute;
  inset: 0;
  top: -5.15rem;
  overflow: hidden;
  background: #fff;
}

.hero-building {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  clip-path: none;
}

.hero-bar {
  height: 42px;
  background: var(--color-navy);
  width: 100%;
}

/* —— Sections —— */
.section {
  padding-block: var(--section-pad-y);
}

.section--white {
  background: #fff;
}

.section--muted {
  background: var(--color-muted-bg);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.75rem;
  font-size: clamp(1.25rem, 1vw + 1rem, 1.65rem);
  font-weight: 700;
  color: var(--color-blue);
  line-height: 1.25;
}

.section-title--center {
  justify-content: center;
}

.section-title--long {
  flex-wrap: wrap;
}

.section-title--green {
  color: var(--color-green);
}

.section-title-mark {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.section-title-mark--blue {
  background: var(--color-blue);
}

.section-title-mark--green {
  background: var(--color-green);
}

.section-title-mark--triangle {
  width: 0;
  height: 0;
  background: none;
  border-style: solid;
  border-width: 7px 0 7px 11px;
  border-color: transparent transparent transparent var(--color-blue);
}

.section-title-mark--triangle-green {
  border-color: transparent transparent transparent var(--color-green);
}

.lead {
  margin: 0;
  font-size: 1.0625rem;
  max-width: 52rem;
}

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

.section-title--story {
  margin: 0 0 1.25rem;
}

.section-title--what {
  margin: 0 0 1.25rem;
}

/* Our Story：左图右文，标题与 story.png 顶对齐 */
.story-layout {
  display: grid;
  grid-template-columns: minmax(260px, 31%) minmax(0, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.story-right {
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
  height: 100%;
}

.story-copy {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.story-figure img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: auto;
}

.story-copy p {
  margin: 0 0 1.25rem;
  font-size: 1rem;
}

.story-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-top: auto;
}

.story-thumbs img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  display: block;
}

/* Feature banner：整图等比完整显示，全宽不裁切 */
.feature-banner {
  margin: 0;
  padding: 0;
  line-height: 0;
  width: 100%;
  overflow: hidden;
  background: #e8eef3;
}

.feature-banner-img {
  display: block;
  width: 100%;
  height: auto;
}

/* Risk list */
.risk-list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 48rem;
}

.risk-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--color-heading);
}

.risk-icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: #6e6e6e;
}

.risk-icon-svg {
  display: block;
}

.cta-strip {
  background: var(--color-green);
  color: #fff;
  text-align: center;
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  line-height: 1.45;
}

.cta-strip--pill {
  border-radius: 9999px;
  padding: 1.1rem 1.75rem;
}

/* Why choose */
.grid-why {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.card-why {
  background: #fff;
  padding: 0;
  border-radius: 0;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.section--muted .card-why {
  background: #fff;
}

.card-why img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.card-why h3 {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 1rem 1rem 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-heading);
}

.card-why-chev {
  flex-shrink: 0;
  color: #a67c52;
  font-weight: 700;
  line-height: 1;
}

.card-why p {
  margin: 0 1rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* Who we work with */
.work-with {
  display: grid;
  grid-template-columns: minmax(220px, 28%) minmax(0, 1fr);
  gap: 2.75rem;
  align-items: start;
}

.work-with-copy {
  padding-right: clamp(2rem, 6vw, 5.5rem);
}

.section-title--work-with {
  margin-top: 0;
}

.work-with-media img {
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.bullet-list {
  margin: 0;
  padding-left: 1.25rem;
}

.bullet-list li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

/* Mission */
.mission-block .section-title {
  margin-bottom: 1rem;
}

.mission-line {
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.6rem);
  font-weight: 700;
  color: var(--color-green);
  line-height: 1.35;
  max-width: 56rem;
  text-align: left;
}

/* Experience */
.experience-tags {
  margin: 0 0 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.experience-figure img {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: min(480px, 55vw);
  object-position: center;
}

/* Network */
.network-intro {
  margin: -0.5rem 0 1.75rem;
  max-width: 40rem;
}

/* 左约 1/3、右约 2/3；整组高度一致，左列两张均分高度并与右图对齐 */
.network-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  grid-template-rows: minmax(0, 1fr);
  gap: 1.25rem;
  align-items: stretch;
  width: 100%;
  aspect-ratio: 2.35 / 1;
  min-height: clamp(260px, 36vw, 520px);
}

.network-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 1.25rem;
  min-height: 0;
  height: 100%;
}

.network-stack img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center;
  display: block;
}

.network-feature {
  min-height: 0;
  height: 100%;
}

.network-feature img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* Our Difference + Services（同一白底区块） */
.section--difference-services .section-title--services-cap {
  margin-top: 2.75rem;
  margin-bottom: 1.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: clamp(1.15rem, 0.8vw + 1rem, 1.5rem);
  color: var(--color-blue);
}

.difference-lead {
  margin: 0 0 0.5rem;
  max-width: 56rem;
  font-size: 1.0625rem;
  color: var(--color-text);
  line-height: 1.55;
}

/* Services 矩阵：首行 4 列、次行 3 列，纵向虚线分隔 */
.services-matrix {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: auto auto;
  column-gap: 0;
  row-gap: 2.25rem;
  margin-top: 0.25rem;
}

.services-block {
  padding: 0 1.35rem;
  min-width: 0;
  border-right: 1px dashed rgba(0, 86, 145, 0.22);
}

.services-block--r1c1 {
  grid-column: 1;
  grid-row: 1;
  padding-left: 0;
}

.services-block--r1c2 {
  grid-column: 2;
  grid-row: 1;
}

.services-block--r1c3 {
  grid-column: 3;
  grid-row: 1;
}

.services-block--r1c4 {
  grid-column: 4;
  grid-row: 1;
  border-right: none;
  padding-right: 0;
}

.services-block--r2c1 {
  grid-column: 1;
  grid-row: 2;
  padding-left: 0;
}

.services-block--r2c2 {
  grid-column: 2;
  grid-row: 2;
}

.services-block--r2c3 {
  grid-column: 3;
  grid-row: 2;
  border-right: none;
  padding-right: 0;
}

.services-heading {
  margin: 0 0 0.65rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-green);
  line-height: 1.25;
}

.services-text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.55;
}

.services-list {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.5;
}

.services-list li {
  margin-bottom: 0.35rem;
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  padding-block: 3rem 2.75rem;
}

.footer-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  margin: 0 0 2rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-blue);
}

.contact-rows {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.35rem;
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.75rem 2.5rem;
}

.contact-row--address {
  width: 100%;
  max-width: 62rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.98rem;
  color: var(--color-heading);
}

.contact-item--address {
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.5;
}

.contact-icon-ring {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #c5cad3;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* —— Tablet —— */
@media (max-width: 1024px) {
  :root {
    --section-pad-y: 3.5rem;
  }

  .hero-grid {
    min-height: 460px;
  }

  .hero-building {
    object-position: center center;
  }

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

  .services-block {
    padding-inline: 1rem;
  }

  .story-layout {
    gap: 1.5rem;
  }

}

/* —— Mobile —— */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.25rem;
    gap: 0;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.2s ease, opacity 0.2s ease, visibility 0.2s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  .site-nav .btn-nav {
    margin: 0.75rem 0 0;
    text-align: center;
  }

  .hero-grid {
    min-height: 370px;
  }

  .hero-taglines {
    padding-top: 1rem;
  }

  .hero-visual {
    top: 5.85rem;
    min-height: 220px;
  }

  .hero-building {
    object-fit: cover;
    object-position: center center;
    clip-path: none;
  }

  .story-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .story-figure {
    order: -1;
  }

  .section-title--story {
    margin-bottom: 1rem;
  }

  .story-thumbs {
    grid-template-columns: 1fr;
    max-width: 288px;
    margin-inline: auto;
  }

  /* 手机端图片统一按原图比例显示，禁止任何强制拉伸 */
  .story-figure img,
  .story-thumbs img,
  .card-why img,
  .work-with-media img,
  .network-stack img,
  .network-feature img {
    width: 100% !important;
    height: auto !important;
    aspect-ratio: auto !important;
    object-fit: initial !important;
  }

  .work-with {
    grid-template-columns: 1fr;
  }

  .network-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    aspect-ratio: unset;
    min-height: 0;
    gap: 1rem;
  }

  .network-stack {
    grid-template-rows: auto auto;
    height: auto;
    gap: 1rem;
  }

  .network-stack img {
    width: 100%;
    height: auto;
  }

  .network-feature {
    height: auto;
    min-height: 0;
  }

  .network-feature img {
    width: 100%;
    height: auto;
  }

  .grid-why {
    grid-template-columns: 1fr;
  }

  .card-why {
    width: 100%;
    max-width: 302px;
    margin-inline: auto;
  }

  .services-matrix {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    row-gap: 0;
  }

  .services-block--r1c1,
  .services-block--r1c2,
  .services-block--r1c3,
  .services-block--r1c4,
  .services-block--r2c1,
  .services-block--r2c2,
  .services-block--r2c3 {
    grid-column: 1;
    grid-row: auto;
    border-right: none;
    border-bottom: 1px dashed rgba(0, 86, 145, 0.2);
    padding: 1.2rem 0;
  }

  .services-block--r1c1 {
    padding-top: 0;
  }

  .services-block--r2c3 {
    border-bottom: none;
    padding-bottom: 0;
  }

  .section--difference-services .section-title--services-cap {
    margin-top: 2rem;
  }

  .contact-row--icons {
    flex-direction: column;
    gap: 1rem;
  }

  .site-footer .container {
    padding-inline: 1rem;
  }

  .footer-title {
    justify-content: flex-start;
    text-align: left;
    margin-bottom: 1.25rem;
  }

  .contact-rows {
    align-items: flex-start;
    gap: 1rem;
  }

  .contact-row,
  .contact-row--icons,
  .contact-row--address {
    width: 100%;
    justify-content: flex-start;
    align-items: flex-start;
    text-align: left;
    max-width: none;
  }

  .contact-item,
  .contact-item--address {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
  }

  .experience-figure img {
    max-height: none;
  }
}

@media (max-width: 480px) {
  .hero-line-text {
    letter-spacing: 0.03em;
    font-size: 1.22rem;
  }

  .hero-grid {
    min-height: 320px;
  }

  .hero-visual {
    top: 5rem;
  }

  .hero-bar {
    height: 32px;
  }

  .story-thumbs {
    grid-template-columns: 1fr;
  }

  .story-thumbs img {
    width: 100% !important;
    height: auto !important;
    aspect-ratio: auto !important;
    object-fit: initial !important;
  }
}