:root {
  --bg: #101713;
  --bg-deep: #07100c;
  --surface: rgba(245, 239, 224, 0.08);
  --surface-strong: rgba(245, 239, 224, 0.13);
  --paper: #f5efe0;
  --paper-soft: #e8ddc7;
  --ink: #101713;
  --ink-soft: #344039;
  --muted: #8f9c91;
  --line: rgba(245, 239, 224, 0.15);
  --line-dark: rgba(16, 23, 19, 0.14);
  --accent: #ffb23f;
  --accent-hot: #ff6f3c;
  --cyan: #8ae6d2;
  --green: #9bd36b;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 18px 48px rgba(7, 16, 12, 0.12);
  --radius-xl: 34px;
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--paper);
  background:
    radial-gradient(circle at 14% 0%, rgba(255, 178, 63, 0.22), transparent 27rem),
    radial-gradient(circle at 84% 8%, rgba(138, 230, 210, 0.14), transparent 24rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.03) 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 52%, #0e1712 100%);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.68;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(245, 239, 224, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(245, 239, 224, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 74%);
}

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

img {
  max-width: 100%;
}

::selection {
  color: var(--ink);
  background: var(--accent);
}

.container {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.narrow {
  width: min(calc(100% - 2rem), 860px);
}

.site-shell {
  position: relative;
  overflow-x: clip;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 12, 0.72);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 1 auto;
  gap: 0.75rem;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: inline-grid;
  width: 54px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(255, 178, 63, 0.45);
  border-radius: 13px;
  color: var(--ink);
  background:
    linear-gradient(135deg, var(--accent), #ffe2a3);
  box-shadow: 0 0 28px rgba(255, 178, 63, 0.28);
  font-size: 0.78rem;
  letter-spacing: -0.04em;
}

.brand-text {
  white-space: nowrap;
}

.site-nav {
  display: flex;
  flex: 1 1 360px;
  justify-content: center;
  min-width: 280px;
  max-width: 520px;
  gap: 0.25rem;
  padding: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(245, 239, 224, 0.09);
}

.site-nav a,
.nav-cta {
  border-radius: 999px;
  color: var(--paper-soft);
  font-size: 0.9rem;
  font-weight: 700;
}

.site-nav a {
  padding: 0.55rem 0.9rem;
}

.site-nav a:hover {
  color: var(--ink);
  background: var(--paper);
}

.nav-cta {
  flex: 0 0 auto;
  padding: 0.68rem 1rem;
  color: var(--ink);
  background: var(--accent);
  box-shadow: 0 16px 36px rgba(255, 178, 63, 0.22);
}

.hero,
.section,
.page-head,
.article {
  position: relative;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.hero {
  padding-top: clamp(4.6rem, 9vw, 8rem);
}

.hero::after {
  content: "";
  position: absolute;
  right: -12rem;
  top: 4rem;
  width: 42rem;
  height: 42rem;
  border: 1px solid rgba(138, 230, 210, 0.18);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(138, 230, 210, 0.12), transparent 62%);
  pointer-events: none;
}

.hero-grid,
.split-grid,
.footer-grid,
.contact-box {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.hero-grid {
  position: relative;
  z-index: 1;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
}

.split-grid {
  grid-template-columns: 0.85fr 1.15fr;
  align-items: start;
}

.footer-grid {
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
}

.contact-box {
  grid-template-columns: 1fr 0.82fr;
}

.eyebrow,
.meta,
.card-index,
.panel-kicker {
  color: var(--cyan);
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0 0 0.9rem;
  color: var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.14;
}

h1 {
  max-width: 15ch;
  font-size: clamp(2.35rem, 4.6vw, 4rem);
}

h2 {
  font-size: clamp(1.65rem, 2.9vw, 2.9rem);
}

h3 {
  font-size: clamp(1.08rem, 1.35vw, 1.32rem);
}

p,
li {
  color: var(--paper-soft);
  font-size: 1rem;
}

.lead {
  max-width: 46rem;
  margin: 0 0 1.5rem;
  color: #f1e7d2;
  font-size: clamp(1.05rem, 1.25vw, 1.18rem);
  line-height: 1.78;
}

.hero-body {
  max-width: 48rem;
}

.hero-body ul,
.article-body ul,
.article-body ol {
  padding-left: 1.25rem;
}

.hero-body li::marker,
.article-body li::marker {
  color: var(--accent);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.5rem 0 1.2rem;
}

.hero-badges span {
  padding: 0.42rem 0.75rem;
  border: 1px solid rgba(138, 230, 210, 0.22);
  border-radius: 999px;
  color: var(--paper);
  background: rgba(138, 230, 210, 0.08);
  font-size: 0.84rem;
  font-weight: 700;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0.9rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  font-size: 0.95rem;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.nav-cta:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--ink);
  background: linear-gradient(135deg, var(--accent), #ffe0a0);
  box-shadow: 0 18px 42px rgba(255, 178, 63, 0.23);
}

.button-secondary {
  border-color: var(--line);
  color: var(--paper);
  background: rgba(245, 239, 224, 0.08);
}

.cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.signal-panel,
.card,
.stack-card,
.timeline-item,
.value-card,
.contact-box,
.footer-card {
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(245, 239, 224, 0.13), rgba(245, 239, 224, 0.05));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.signal-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(1.35rem, 3vw, 2.2rem);
  border-radius: var(--radius-xl);
}

.signal-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 48%, rgba(138, 230, 210, 0.14) 49% 51%, transparent 52%),
    radial-gradient(circle at 88% 12%, rgba(255, 111, 60, 0.22), transparent 13rem);
  pointer-events: none;
}

.signal-panel > * {
  position: relative;
  z-index: 1;
}

.signal-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  color: var(--green);
  background: rgba(155, 211, 107, 0.11);
  font-size: 0.74rem;
  font-weight: 900;
}

.status-pill::before {
  content: "";
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}

.signal-panel h2 {
  max-width: 14ch;
  font-size: clamp(1.6rem, 2.7vw, 2.45rem);
  margin-bottom: 1.6rem;
}

.signal-lines {
  display: grid;
  gap: 0.85rem;
  margin: 1.6rem 0;
}

.signal-lines div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.82rem 0;
  border-bottom: 1px solid var(--line);
}

.signal-lines span {
  color: var(--paper-soft);
  font-size: 0.95rem;
}

.signal-lines strong {
  color: var(--cyan);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.fit-list {
  display: grid;
  gap: 0.85rem;
  margin: 1.6rem 0;
}

.fit-list article {
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(7, 16, 12, 0.36);
}

.fit-list strong,
.fit-list span {
  display: block;
}

.fit-list strong {
  color: var(--paper);
  font-size: 1rem;
}

.fit-list span {
  margin-top: 0.25rem;
  color: var(--paper-soft);
  font-size: 0.92rem;
  line-height: 1.62;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.metric-grid div {
  min-height: 94px;
  padding: 1rem;
  border: 1px solid rgba(245, 239, 224, 0.14);
  border-radius: 20px;
  background: rgba(7, 16, 12, 0.4);
}

.metric-grid strong {
  display: block;
  color: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.55rem;
  line-height: 1;
}

.metric-grid span {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 1.7rem;
}

.section-accent {
  background:
    linear-gradient(180deg, transparent, rgba(245, 239, 224, 0.04), transparent);
}

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

.pain-card {
  position: relative;
  min-height: 240px;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 111, 60, 0.1), rgba(245, 239, 224, 0.05));
  box-shadow: var(--shadow-soft);
}

.pain-card span {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  color: var(--ink);
  background: var(--accent-hot);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.pain-card h3 {
  margin-top: 1rem;
}

.pain-card p {
  margin-bottom: 0;
  font-size: 0.96rem;
  line-height: 1.72;
}

.capability-map {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 14% 0%, rgba(138, 230, 210, 0.13), transparent 18rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.12), rgba(245, 239, 224, 0.05));
  box-shadow: var(--shadow);
}

.capability-row {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr 1fr;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--line);
}

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

.capability-row span {
  color: var(--paper-soft);
  line-height: 1.65;
}

.capability-head {
  background: rgba(7, 16, 12, 0.46);
}

.capability-head span {
  color: var(--cyan);
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.card,
.stack-card,
.timeline-item,
.value-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  padding: 1.35rem;
}

.card::after,
.stack-card::after,
.value-card::after {
  content: "";
  position: absolute;
  inset: auto 1.25rem 0 1.25rem;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0;
  transition: opacity 180ms ease;
}

.card:hover::after,
.stack-card:hover::after,
.value-card:hover::after {
  opacity: 1;
}

.card h3,
.stack-card h2 {
  margin-top: 0.55rem;
}

.card h3 {
  font-size: clamp(1.08rem, 1.45vw, 1.28rem);
  line-height: 1.28;
}

.stack-card h2 {
  font-size: clamp(1.22rem, 2vw, 1.55rem);
  line-height: 1.24;
}

.card p,
.stack-card p,
.value-card p,
.timeline-item p {
  margin-bottom: 0;
  font-size: 0.96rem;
  line-height: 1.72;
}

.card-index {
  margin: 0;
  color: rgba(138, 230, 210, 0.78);
}

.text-link {
  display: inline-flex;
  margin-top: 1.1rem;
  color: var(--accent);
  font-weight: 900;
  transition: transform 180ms ease;
}

.text-link::after {
  content: " ->";
}

.value-list,
.timeline,
.stack-list,
.contact-list {
  display: grid;
  gap: 1rem;
}

.timeline {
  counter-reset: step;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 1rem;
}

.timeline-item span {
  grid-row: span 2;
  display: inline-grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 16px;
  color: var(--ink);
  background: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.timeline-item strong {
  color: var(--paper);
  font-size: 1.06rem;
}

.contact-box {
  overflow: hidden;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 88% 0%, rgba(255, 178, 63, 0.2), transparent 18rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.13), rgba(245, 239, 224, 0.06));
}

.contact-list p {
  display: grid;
  gap: 0.22rem;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(7, 16, 12, 0.35);
}

.contact-qr-row {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(7, 16, 12, 0.35);
}

.contact-list strong,
.contact-qr-row > strong {
  color: var(--cyan);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contact-list span {
  color: var(--paper);
  overflow-wrap: anywhere;
}

.wechat-qr-card {
  display: grid;
  gap: 0.55rem;
  justify-items: start;
}

.wechat-qr-thumb {
  display: inline-flex;
  border-radius: 18px;
  cursor: zoom-in;
}

.wechat-qr-card img {
  width: min(100%, 172px);
  height: auto;
  padding: 0.55rem;
  border-radius: 18px;
  background: var(--paper);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.wechat-qr-card span {
  color: var(--paper-soft);
  font-size: 0.9rem;
}

.qr-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: 1rem;
}

.qr-lightbox:target {
  display: grid;
}

.qr-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7, 16, 12, 0.82);
  backdrop-filter: blur(14px);
}

.qr-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(calc(100vw - 2rem), 460px);
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 84% 0%, rgba(255, 178, 63, 0.18), transparent 16rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.16), rgba(16, 23, 19, 0.96));
  box-shadow: var(--shadow);
  text-align: center;
}

.qr-lightbox-panel img {
  display: block;
  width: min(100%, 360px);
  height: auto;
  margin: 1rem auto;
  padding: 0.8rem;
  border-radius: 24px;
  background: var(--paper);
}

.qr-lightbox-panel p {
  margin-bottom: 0;
}

.qr-lightbox-close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  background: rgba(7, 16, 12, 0.62);
  font-size: 0.86rem;
  font-weight: 700;
}

.contact-hero {
  position: relative;
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.contact-page-grid,
.contact-info-grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.contact-page-grid {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.contact-page-copy {
  max-width: 680px;
}

.contact-direct-card,
.contact-info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 88% 0%, rgba(255, 178, 63, 0.18), transparent 16rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.13), rgba(245, 239, 224, 0.06));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.contact-direct-card {
  padding: clamp(1.35rem, 3vw, 2.2rem);
}

.contact-direct-card h2 {
  max-width: 10ch;
  font-size: clamp(1.65rem, 2.8vw, 2.6rem);
}

.contact-info-grid {
  grid-template-columns: 1.15fr 0.85fr;
}

.contact-info-card {
  padding: clamp(1.35rem, 3vw, 2rem);
}

.contact-info-card h2 {
  font-size: clamp(1.35rem, 2.3vw, 2rem);
}

.contact-info-card ul {
  margin: 1.2rem 0 0;
  padding-left: 1.2rem;
}

.contact-info-card li::marker {
  color: var(--accent);
}

.message-form-card {
  grid-row: span 2;
}

.message-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

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

.message-form label {
  display: grid;
  gap: 0.45rem;
}

.message-form label span {
  color: var(--cyan);
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.message-form input,
.message-form select,
.message-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--paper);
  background: rgba(7, 16, 12, 0.48);
  font: inherit;
  outline: none;
  padding: 0.9rem 1rem;
}

.message-form textarea {
  resize: vertical;
  min-height: 150px;
}

.message-form input:focus,
.message-form select:focus,
.message-form textarea:focus {
  border-color: rgba(255, 178, 63, 0.72);
  box-shadow: 0 0 0 4px rgba(255, 178, 63, 0.12);
}

.message-form button {
  width: fit-content;
}

.form-status {
  min-height: 1.5rem;
  margin: 0;
  color: var(--paper-soft);
  font-size: 0.95rem;
}

.form-status[data-state="success"] {
  color: var(--green);
}

.form-status[data-state="error"] {
  color: var(--accent-hot);
}

.message-dialog[hidden] {
  display: none;
}

.message-dialog {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.message-dialog-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7, 16, 12, 0.82);
  backdrop-filter: blur(14px);
}

.message-dialog-panel {
  position: relative;
  z-index: 1;
  width: min(calc(100vw - 2rem), 460px);
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 84% 0%, rgba(255, 178, 63, 0.18), transparent 16rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.16), rgba(16, 23, 19, 0.96));
  box-shadow: var(--shadow);
}

.message-dialog[data-state="success"] .panel-kicker {
  color: var(--green);
}

.message-dialog[data-state="error"] .panel-kicker {
  color: var(--accent-hot);
}

.message-dialog-panel h2 {
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

.message-dialog-panel p {
  margin-bottom: 1.2rem;
}

.message-dialog-close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  background: rgba(7, 16, 12, 0.62);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

.flow-section {
  overflow: visible;
}

.flow-board,
.flow-lanes,
.loop-board,
.delivery-flow {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 18% 0%, rgba(138, 230, 210, 0.14), transparent 18rem),
    linear-gradient(145deg, rgba(245, 239, 224, 0.11), rgba(245, 239, 224, 0.05));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.flow-board {
  padding: clamp(1rem, 2vw, 1.4rem);
  overflow-x: auto;
}

.flow-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(190px, 1fr));
  gap: 0.85rem;
  min-width: 980px;
}

.flow-node,
.flow-lane {
  position: relative;
  border: 1px solid rgba(245, 239, 224, 0.14);
  background: rgba(7, 16, 12, 0.38);
}

.flow-node {
  min-height: 230px;
  padding: 1.05rem;
  border-radius: 22px;
}

.flow-node:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -0.67rem;
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  transform: translateY(-50%) rotate(45deg);
  z-index: 2;
}

.flow-node-owned,
.flow-lane-owned {
  border-color: rgba(255, 178, 63, 0.42);
  background:
    linear-gradient(180deg, rgba(255, 178, 63, 0.12), rgba(7, 16, 12, 0.46));
}

.flow-step,
.flow-lane-head span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--ink);
  background: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.flow-node h3,
.flow-lane h3 {
  margin-top: 1rem;
}

.flow-node p,
.flow-lane p,
.flow-lane li {
  font-size: 0.94rem;
  line-height: 1.68;
}

.flow-node strong {
  display: block;
  margin-top: 1rem;
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1.55;
}

.flow-lanes {
  display: grid;
  gap: 0.85rem;
  padding: clamp(1rem, 2vw, 1.4rem);
}

.flow-lane {
  padding: 1.15rem;
  border-radius: 22px;
}

.flow-lane-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.flow-lane-head h3 {
  margin: 0;
}

.flow-lane ul {
  display: grid;
  gap: 0.35rem;
  margin: 0.9rem 0 0;
  padding-left: 1.2rem;
}

.flow-lane li::marker {
  color: var(--accent);
}

.loop-board {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
  padding: clamp(1rem, 2vw, 1.4rem);
}

.loop-node,
.delivery-flow article {
  position: relative;
  border: 1px solid rgba(245, 239, 224, 0.14);
  border-radius: 22px;
  background: rgba(7, 16, 12, 0.38);
}

.loop-node {
  padding: 1.05rem;
  min-height: 220px;
}

.loop-node::before {
  content: "";
  position: absolute;
  inset: 0.7rem;
  border: 1px dashed rgba(138, 230, 210, 0.18);
  border-radius: 16px;
  pointer-events: none;
}

.loop-node:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -0.64rem;
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  transform: translateY(-50%) rotate(45deg);
  z-index: 2;
}

.loop-node-owned {
  border-color: rgba(255, 178, 63, 0.42);
  background:
    linear-gradient(180deg, rgba(255, 178, 63, 0.12), rgba(7, 16, 12, 0.46));
}

.loop-node span,
.delivery-flow span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--ink);
  background: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.loop-node h3,
.delivery-flow h3 {
  margin-top: 1rem;
}

.loop-node p,
.delivery-flow p {
  font-size: 0.94rem;
  line-height: 1.68;
}

.delivery-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
  padding: clamp(1rem, 2vw, 1.4rem);
}

.delivery-flow article {
  padding: 1.05rem;
  min-height: 210px;
}

.delivery-flow article:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -0.64rem;
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  transform: translateY(-50%) rotate(45deg);
  z-index: 2;
}

.page-head {
  padding-bottom: 2rem;
}

.page-head .narrow,
.article .narrow {
  position: relative;
  z-index: 1;
}

.page-intro,
.article-body {
  color: var(--paper-soft);
  font-size: 1rem;
}

.article-header {
  margin-bottom: 2rem;
}

.page-head h1,
.article-header h1 {
  max-width: 22ch;
  font-size: clamp(1.9rem, 3.2vw, 3rem);
  line-height: 1.18;
}

.article-post .article-header h1 {
  font-size: clamp(1.7rem, 2.55vw, 2.45rem);
  line-height: 1.22;
}

.article-body {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(245, 239, 224, 0.07);
  box-shadow: var(--shadow-soft);
}

.article-body h2,
.article-body h3 {
  margin-top: 2.2rem;
  letter-spacing: -0.035em;
}

.article-body h2 {
  font-size: clamp(1.38rem, 2.1vw, 1.85rem);
  line-height: 1.26;
}

.article-body h3 {
  font-size: clamp(1.12rem, 1.55vw, 1.32rem);
  line-height: 1.32;
}

.article-body a {
  color: var(--accent);
  font-weight: 700;
}

.article-body code {
  padding: 0.15rem 0.35rem;
  border-radius: 8px;
  color: var(--cyan);
  background: rgba(7, 16, 12, 0.5);
}

.site-footer {
  position: relative;
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  background: rgba(7, 16, 12, 0.48);
}

.brand-footer {
  margin: 0 0 0.8rem;
}

.footer-about p:last-child,
.footer-card p:last-child {
  margin-bottom: 0;
}

.footer-card {
  padding: 1.15rem;
  border-radius: var(--radius-sm);
}

.footer-contact-card {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 1.1rem;
  align-content: start;
  align-items: start;
}

.footer-contact-card p {
  margin: 0;
}

.footer-contact-card .wechat-qr-card {
  gap: 0.4rem;
}

.footer-contact-card .wechat-qr-card img {
  width: 132px;
  padding: 0.42rem;
  border-radius: 15px;
}

.footer-contact-card .wechat-qr-card span {
  font-size: 0.8rem;
}

.footer-qr,
.footer-contact-lines {
  display: grid;
  gap: 0.6rem;
}

.footer-contact-lines {
  padding-top: 0.05rem;
}

.footer-card strong {
  color: var(--cyan);
  font-family: "Space Grotesk", sans-serif;
}

@media (max-width: 980px) {
  .site-nav {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    min-width: 0;
    justify-content: center;
    overflow-x: auto;
  }

  .hero-grid,
  .split-grid,
  .footer-grid,
  .contact-box,
  .contact-page-grid,
  .contact-info-grid,
  .form-grid,
  .pain-grid,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .capability-map {
    overflow-x: auto;
  }

  .capability-row {
    grid-template-columns: repeat(3, minmax(220px, 1fr));
    min-width: 720px;
  }

  .flow-track {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .loop-board,
  .delivery-flow {
    grid-template-columns: 1fr;
  }

  .flow-node,
  .loop-node,
  .delivery-flow article {
    min-height: auto;
  }

  .flow-node:not(:last-child)::after,
  .loop-node:not(:last-child)::after,
  .delivery-flow article:not(:last-child)::after {
    top: auto;
    right: 1.4rem;
    bottom: -0.68rem;
    transform: rotate(135deg);
  }

  h1 {
    max-width: 16ch;
  }
}

@media (max-width: 640px) {
  .container,
  .narrow {
    width: min(calc(100% - 1rem), var(--max));
  }

  .nav-wrap {
    gap: 0.75rem;
  }

  .brand-text {
    white-space: normal;
  }

  .nav-cta {
    flex: 1 1 100%;
    text-align: center;
  }

  .footer-contact-card {
    grid-template-columns: 1fr;
  }

  .site-nav {
    flex-basis: 100%;
    justify-content: flex-start;
  }

  .hero,
  .section,
  .page-head,
  .article {
    padding: 3.2rem 0;
  }

  h1 {
    max-width: none;
    font-size: clamp(2rem, 8.8vw, 2.75rem);
  }

  .page-head h1,
  .article-header h1 {
    font-size: clamp(1.75rem, 7.6vw, 2.45rem);
  }

  .article-post .article-header h1 {
    font-size: clamp(1.55rem, 6.6vw, 2.05rem);
  }

  .signal-panel h2 {
    max-width: none;
  }

  .button,
  .cta-row,
  .contact-list .button {
    width: 100%;
  }

  .cta-row {
    flex-direction: column;
  }

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

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-item span {
    margin-bottom: 0.8rem;
  }
}