:root {
  --bg: #071426;
  --panel: #0b1e3a;
  --panel-soft: rgba(15, 35, 65, 0.68);
  --text: #eef7ff;
  --muted: #9db6c9;
  --line: rgba(148, 197, 219, 0.24);
  --accent: #28c7c7;
  --accent-2: #a7f3d0;
  --paper: #f7fafc;
  --ink: #102033;
  --danger: #f87171;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  scroll-padding-top: var(--header-offset, 96px);
}

body {
  margin: 0;
  min-height: 100dvh;
  padding-top: 82px;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 75%);
}

a {
  color: inherit;
  text-decoration: none;
  overflow-wrap: anywhere;
}

button,
input {
  font: inherit;
  min-width: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 16px clamp(20px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 20, 38, 0.84);
  backdrop-filter: blur(18px);
  min-width: 0;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.16);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 280px;
}

.brand-lockup img:first-child {
  width: 130px;
  height: auto;
}

.brand-lockup img:last-child {
  width: 190px;
  height: auto;
}

.brand-lockup span {
  width: 1px;
  height: 26px;
  background: rgba(167, 243, 208, 0.38);
}

.site-nav {
  position: relative;
  display: inline-flex;
  justify-content: flex-end;
  justify-self: end;
  min-width: 0;
}

.nav-menu-button {
  display: inline-grid;
  place-items: center;
  min-height: 40px;
  padding: 9px 18px;
  border: 1px solid rgba(148, 197, 219, 0.32);
  border-radius: 999px;
  color: var(--text);
  background: linear-gradient(135deg, rgba(40, 199, 199, 0.2), rgba(11, 30, 58, 0.82));
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
  cursor: pointer;
}

.nav-menu-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: min(360px, calc(100vw - 40px));
  padding: 10px;
  border: 1px solid rgba(148, 197, 219, 0.26);
  border-radius: 14px;
  background: rgba(7, 20, 38, 0.94);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.site-nav:hover .nav-menu-panel,
.site-nav:focus-within .nav-menu-panel,
.site-nav.menu-open .nav-menu-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-toggle {
  display: none;
  justify-self: end;
  min-height: 40px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(15, 35, 65, 0.72);
  cursor: pointer;
}

.site-nav a,
.ghost-button {
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition: transform 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.site-nav a {
  display: grid;
  place-items: center;
  min-height: 40px;
  border-color: rgba(148, 197, 219, 0.14);
  background: rgba(15, 35, 65, 0.58);
  text-align: center;
  white-space: nowrap;
}

.site-nav a:hover,
.ghost-button:hover {
  color: var(--text);
  border-color: var(--line);
}

.site-nav a:active,
.ghost-button:active,
.primary-button:active,
.secondary-button:active,
.login-form button:active,
.topology-tabs button:active {
  transform: translateY(1px) scale(0.99);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  min-height: calc(100dvh - 82px);
  padding: 90px clamp(22px, 6vw, 88px) 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 20, 38, 0.96) 0%, rgba(7, 20, 38, 0.82) 44%, rgba(7, 20, 38, 0.18) 100%),
    url("assets/shengbo-render-source.png") center / cover no-repeat;
  opacity: 0.84;
}

.hero-content,
.hero-panel {
  position: relative;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  color: #d9ebf5;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 8px;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.primary-button {
  color: #04111f;
  background: var(--accent-2);
}

.secondary-button {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.hero-panel {
  align-self: stretch;
  display: flex;
  align-items: center;
}

.live-frame {
  position: relative;
  width: 100%;
  min-height: 430px;
  padding: 34px;
  border: 1px solid rgba(167, 243, 208, 0.22);
  border-radius: 12px;
  background: rgba(5, 17, 32, 0.68);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.live-frame::before {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(40, 199, 199, 0.22);
}

.pulse-line {
  height: 2px;
  margin: 20px 0 70px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  animation: scan 3.6s ease-in-out infinite;
}

.metric-row {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--muted);
}

.metric-row strong {
  color: var(--text);
}

.section {
  padding: 92px clamp(22px, 6vw, 88px);
  scroll-margin-top: var(--header-offset, 96px);
  color: var(--ink);
  background: var(--paper);
}

.section:nth-of-type(odd) {
  background: #eef5f8;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(280px, 1.1fr);
  gap: 40px;
  align-items: end;
  margin-bottom: 38px;
}

.section-heading h2 {
  margin: 0;
  color: #09213b;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
}

.section-heading p {
  margin: 0;
  color: #52677a;
  font-size: 18px;
  line-height: 1.7;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.system-grid article {
  min-height: 152px;
  padding: 22px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.system-grid article:hover {
  transform: translateY(-4px);
  border-color: #96c5d4;
}

.system-grid b {
  display: block;
  margin-bottom: 12px;
  color: #08243f;
  font-size: 18px;
}

.system-grid span {
  color: #52677a;
  line-height: 1.65;
}

.highlight-section {
  background: #eef5f8;
}

.highlight-board {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
}

.highlight-tile {
  position: relative;
  min-height: 280px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
}

.highlight-tile::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 4px;
  background: #0f766e;
}

.highlight-tile span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border: 1px solid #96c5d4;
  border-radius: 50%;
  color: #0f766e;
  font-weight: 900;
}

.highlight-tile h3 {
  margin: 0 0 12px;
  color: #09213b;
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.06;
}

.highlight-tile p {
  max-width: 460px;
  color: #52677a;
  line-height: 1.75;
}

.mini-room,
.mini-path,
.mini-gate,
.mini-shield {
  position: absolute;
  right: 22px;
  bottom: 26px;
  width: 160px;
  height: 96px;
  opacity: 0.92;
}

.mini-room i {
  position: absolute;
  bottom: 0;
  width: 34px;
  border-radius: 6px 6px 0 0;
  background: #0f766e;
  animation: roomPulse 3s ease-in-out infinite;
}

.mini-room i:nth-child(1) { left: 0; height: 54px; }
.mini-room i:nth-child(2) { left: 48px; height: 82px; animation-delay: -0.5s; }
.mini-room i:nth-child(3) { left: 96px; height: 42px; animation-delay: -1s; }
.mini-room b {
  position: absolute;
  right: 0;
  top: 12px;
  width: 44px;
  height: 44px;
  border: 2px solid #0f766e;
  border-radius: 50%;
}

.mini-path i {
  position: absolute;
  top: 44px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #0f766e;
  animation: pathDot 3.2s ease-in-out infinite;
}

.mini-path i:nth-child(1) { left: 8px; }
.mini-path i:nth-child(2) { left: 70px; animation-delay: -0.55s; }
.mini-path i:nth-child(3) { right: 8px; animation-delay: -1.1s; }
.mini-path b {
  position: absolute;
  left: 16px;
  right: 16px;
  top: 52px;
  height: 2px;
  background: linear-gradient(90deg, #0f766e, transparent, #0f766e);
}

.mini-gate i {
  position: absolute;
  left: 12px;
  bottom: 18px;
  width: 88px;
  height: 38px;
  border-radius: 16px 20px 10px 10px;
  background: #09213b;
}

.mini-gate b {
  position: absolute;
  right: 20px;
  bottom: 20px;
  width: 12px;
  height: 72px;
  background: #0f766e;
}

.mini-gate em {
  position: absolute;
  right: 28px;
  bottom: 82px;
  width: 86px;
  height: 6px;
  background: #0f766e;
  transform-origin: right center;
  animation: gateLift 4s ease-in-out infinite;
}

.mini-shield i {
  position: absolute;
  left: 42px;
  top: 10px;
  width: 72px;
  height: 82px;
  background: #0f766e;
  clip-path: polygon(50% 0, 100% 18%, 86% 78%, 50% 100%, 14% 78%, 0 18%);
}

.mini-shield b,
.mini-shield em {
  position: absolute;
  border: 1px solid #0f766e;
  border-radius: 50%;
  animation: shieldRing 2.8s ease-in-out infinite;
}

.mini-shield b { inset: 12px 28px 0 28px; }
.mini-shield em { inset: 0 12px -12px 12px; animation-delay: -0.8s; }

.tech-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.tech-strip article {
  padding: 22px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
}

.tech-strip span {
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.tech-strip strong {
  display: block;
  margin: 12px 0 8px;
  color: #09213b;
  font-size: 22px;
}

.tech-strip p {
  margin: 0;
  color: #52677a;
  line-height: 1.55;
}

.amenity-section {
  background: #ffffff;
}

.amenity-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.amenity-metrics article {
  padding: 24px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #09213b;
}

.amenity-metrics span {
  display: block;
  color: #a7f3d0;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 900;
  line-height: 1;
}

.amenity-metrics p {
  margin: 12px 0 0;
  color: #d9edf4;
  line-height: 1.55;
}

.amenity-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.amenity-card {
  position: relative;
  min-height: 250px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #f7fafc;
  overflow: hidden;
}

.amenity-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: #0f766e;
}

.amenity-card span {
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.amenity-card h3 {
  margin: 18px 0 14px;
  color: #09213b;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.14;
}

.amenity-card p {
  margin: 0;
  color: #52677a;
  font-size: 17px;
  line-height: 1.76;
}

.experience-section {
  background: #f7fafc;
}

.experience-flow {
  display: grid;
  grid-template-columns: 1fr 1.18fr;
  gap: 16px;
}

.experience-flow article {
  position: relative;
  min-height: 210px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
}

.experience-flow article::after {
  content: "";
  position: absolute;
  right: 22px;
  bottom: 22px;
  width: 74px;
  height: 2px;
  background: #0f766e;
  opacity: 0.38;
}

.experience-flow span,
.detail-card span {
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.experience-flow h3 {
  margin: 18px 0 12px;
  color: #09213b;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
}

.experience-flow p {
  color: #52677a;
  font-size: 17px;
  line-height: 1.75;
}

.details-section {
  position: relative;
  color: #edfaff;
  background:
    radial-gradient(circle at 18% 8%, rgba(15, 118, 110, 0.32), transparent 28%),
    radial-gradient(circle at 80% 18%, rgba(148, 197, 219, 0.18), transparent 26%),
    linear-gradient(135deg, #061426 0%, #09213b 48%, #07101d 100%);
  overflow: hidden;
}

.details-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(167, 243, 208, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167, 243, 208, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.88), transparent 86%);
}

.details-section .section-heading h2,
.details-section .detail-card h3 {
  color: #ffffff;
}

.details-section .section-heading p {
  color: #b7ced8;
}

.detail-stack {
  display: grid;
  gap: 14px;
}

.detail-card {
  display: grid;
  grid-template-columns: minmax(220px, 0.6fr) minmax(320px, 1.4fr);
  gap: 28px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
}

.detail-card h3 {
  margin: 16px 0 0;
  font-size: clamp(23px, 2.6vw, 34px);
  line-height: 1.16;
}

.detail-card ul {
  display: grid;
  gap: 11px;
  margin: 0;
  padding-left: 20px;
  color: #52677a;
  line-height: 1.72;
}

.detail-card li::marker {
  color: #0f766e;
}

.visual-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  position: relative;
  gap: 18px;
  z-index: 1;
}

.visual-detail-card {
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid rgba(167, 243, 208, 0.18);
  border-radius: 8px;
  background: rgba(6, 20, 38, 0.72);
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 26px 70px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}

.visual-detail-card:hover {
  transform: translateY(-4px);
  border-color: rgba(167, 243, 208, 0.46);
  background: rgba(8, 31, 50, 0.82);
}

.visual-art {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 0;
  background:
    linear-gradient(110deg, rgba(167, 243, 208, 0.12), transparent 38%),
    radial-gradient(circle at 74% 18%, rgba(167, 243, 208, 0.28), transparent 24%),
    linear-gradient(135deg, #07101d, #0b2d40 48%, #0b4a49);
  overflow: hidden;
}

.system-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: saturate(0.95) contrast(1.05);
}

.system-image ~ * {
  display: none !important;
}

.visual-art:has(.system-image) {
  background: #07101d;
}

.visual-art::before {
  content: "";
  position: absolute;
  inset: 18px;
  z-index: 2;
  border: 1px solid rgba(167, 243, 208, 0.22);
  border-radius: 8px;
}

.visual-art::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, transparent 40%, rgba(6, 20, 38, 0.42) 100%),
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.16;
}

.visual-copy {
  padding: 26px;
  border-top: 1px solid rgba(167, 243, 208, 0.13);
}

.visual-copy span {
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.visual-copy h3 {
  margin: 16px 0 12px;
  color: #ffffff;
  font-size: clamp(24px, 2.7vw, 36px);
  line-height: 1.12;
}

.visual-copy p {
  margin: 0;
  color: #bfd3dc;
  font-size: 17px;
  line-height: 1.72;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-row b {
  padding: 8px 10px;
  border: 1px solid rgba(167, 243, 208, 0.22);
  border-radius: 999px;
  color: #d8fff0;
  background: rgba(167, 243, 208, 0.08);
  font-size: 13px;
}

.detail-points {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: #b7ced8;
  font-size: 15px;
  line-height: 1.62;
}

.detail-points li::marker {
  color: #a7f3d0;
}

.art-camera {
  position: absolute;
  left: 15%;
  top: 24%;
  z-index: 2;
  width: 102px;
  height: 58px;
  border: 3px solid #a7f3d0;
  border-radius: 16px;
  background: rgba(6, 20, 38, 0.9);
}

.art-camera::before {
  content: "";
  position: absolute;
  right: -42px;
  top: 13px;
  width: 42px;
  height: 28px;
  clip-path: polygon(0 12%, 100% 0, 100% 100%, 0 88%);
  background: #a7f3d0;
}

.art-camera::after {
  content: "";
  position: absolute;
  left: 28px;
  top: 11px;
  width: 30px;
  height: 30px;
  border: 3px solid #a7f3d0;
  border-radius: 50%;
}

.art-building {
  position: absolute;
  right: 16%;
  bottom: 18%;
  z-index: 2;
  width: 112px;
  height: 170px;
  border: 2px solid rgba(167, 243, 208, 0.8);
  border-radius: 10px 10px 0 0;
  background: repeating-linear-gradient(0deg, rgba(167, 243, 208, 0.18) 0 12px, transparent 12px 25px);
}

.art-scan {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(167, 243, 208, 0.7);
  border-radius: 50%;
  animation: visualPulse 3.2s ease-in-out infinite;
}

.art-scan.s1 { inset: 26% 18% 18% 18%; }
.art-scan.s2 { inset: 14% 8% 8% 8%; animation-delay: -0.9s; }

.art-alert {
  position: absolute;
  right: 22%;
  top: 24%;
  z-index: 2;
  display: grid;
  place-items: center;
  min-width: 62px;
  padding: 0 12px;
  height: 62px;
  border-radius: 999px;
  color: #062033;
  background: #a7f3d0;
}

.art-core {
  position: absolute;
  left: 50%;
  top: 42%;
  z-index: 2;
  display: block;
  width: 88px;
  height: 88px;
  border: 3px solid #a7f3d0;
  border-radius: 50%;
  background: rgba(6, 20, 38, 0.9);
  transform: translate(-50%, -50%);
}

.art-core::before {
  content: "";
  position: absolute;
  inset: 22px;
  border-radius: 50%;
  background: #a7f3d0;
}

.fiber {
  position: absolute;
  left: 50%;
  top: 42%;
  z-index: 1;
  width: 2px;
  height: 138px;
  background: linear-gradient(#a7f3d0, transparent);
  transform-origin: top center;
}

.f1 { transform: rotate(-52deg); }
.f2 { transform: rotate(0deg); }
.f3 { transform: rotate(52deg); }

.ap {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 58px;
  height: 42px;
  border: 1px solid #a7f3d0;
  border-radius: 12px;
  color: #a7f3d0;
  background: rgba(6, 20, 38, 0.78);
}

.ap1 { left: 16%; bottom: 20%; }
.ap2 { left: 50%; bottom: 12%; transform: translateX(-50%); }
.ap3 { right: 16%; bottom: 20%; }

.face-frame {
  position: absolute;
  left: 16%;
  top: 25%;
  z-index: 2;
  width: 126px;
  height: 168px;
  border: 3px solid #a7f3d0;
  border-radius: 24px;
  background: rgba(6, 20, 38, 0.72);
}

.face-frame::before {
  content: "";
  position: absolute;
  left: 35px;
  top: 34px;
  width: 52px;
  height: 52px;
  border: 2px solid #a7f3d0;
  border-radius: 50%;
}

.face-frame::after {
  content: "";
  position: absolute;
  left: 27px;
  bottom: 28px;
  width: 68px;
  height: 34px;
  border: 2px solid #a7f3d0;
  border-radius: 50% 50% 20px 20px;
}

.elevator-box {
  position: absolute;
  right: 16%;
  top: 18%;
  z-index: 2;
  width: 128px;
  height: 190px;
  border: 3px solid #a7f3d0;
  border-radius: 10px;
  background: linear-gradient(90deg, transparent 48%, rgba(167, 243, 208, 0.5) 48% 52%, transparent 52%);
}

.lift-arrow {
  position: absolute;
  left: 50%;
  bottom: 18%;
  z-index: 2;
  width: 120px;
  height: 3px;
  background: #a7f3d0;
  transform: translateX(-50%);
}

.lift-arrow::after {
  content: "";
  position: absolute;
  right: -2px;
  top: -6px;
  width: 14px;
  height: 14px;
  border-right: 3px solid #a7f3d0;
  border-top: 3px solid #a7f3d0;
  transform: rotate(45deg);
}

.floor-dot {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #062033;
  background: #a7f3d0;
}

.d1 { right: 28%; top: 30%; }
.d2 { right: 28%; top: 50%; }

.room-screen {
  position: absolute;
  left: 16%;
  top: 25%;
  z-index: 2;
  width: 112px;
  height: 154px;
  border: 3px solid #a7f3d0;
  border-radius: 18px;
  background: rgba(6, 20, 38, 0.85);
}

.room-screen::before,
.room-screen::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  height: 10px;
  border-radius: 999px;
  background: #a7f3d0;
}

.room-screen::before { top: 38px; }
.room-screen::after { top: 68px; opacity: 0.62; }

.curtain {
  position: absolute;
  right: 18%;
  top: 18%;
  z-index: 2;
  width: 98px;
  height: 138px;
  border-radius: 8px;
  background: repeating-linear-gradient(90deg, #a7f3d0 0 10px, rgba(167, 243, 208, 0.35) 10px 18px);
}

.lamp {
  position: absolute;
  right: 22%;
  bottom: 18%;
  z-index: 2;
  width: 70px;
  height: 70px;
  border-radius: 50% 50% 14px 14px;
  background: rgba(167, 243, 208, 0.8);
  box-shadow: 0 0 44px rgba(167, 243, 208, 0.45);
}

.air-ring {
  position: absolute;
  left: 47%;
  top: 24%;
  z-index: 2;
  width: 76px;
  height: 76px;
  border: 2px solid #a7f3d0;
  border-radius: 50%;
  animation: visualPulse 2.8s ease-in-out infinite;
}

.sensor-dot {
  position: absolute;
  left: 50%;
  bottom: 24%;
  z-index: 3;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #a7f3d0;
  box-shadow: 0 0 0 14px rgba(167, 243, 208, 0.12);
}

.garage-lane {
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 16%;
  z-index: 1;
  height: 118px;
  clip-path: polygon(20% 0, 80% 0, 100% 100%, 0 100%);
  background: linear-gradient(90deg, rgba(167, 243, 208, 0.16), rgba(167, 243, 208, 0.46), rgba(167, 243, 208, 0.16));
}

.car-shape {
  position: absolute;
  left: 28%;
  top: 46%;
  z-index: 2;
  width: 150px;
  height: 58px;
  border-radius: 26px 34px 14px 14px;
  background: #a7f3d0;
}

.car-shape::before {
  content: "";
  position: absolute;
  left: 34px;
  top: -26px;
  width: 82px;
  height: 38px;
  border-radius: 42px 42px 0 0;
  background: rgba(167, 243, 208, 0.85);
}

.light-beam {
  position: absolute;
  right: 17%;
  top: 18%;
  z-index: 2;
  width: 84px;
  height: 170px;
  background: linear-gradient(rgba(167, 243, 208, 0.52), transparent);
  clip-path: polygon(40% 0, 60% 0, 100% 100%, 0 100%);
  animation: beamSweep 3.5s ease-in-out infinite;
}

.fan-ring {
  position: absolute;
  left: 18%;
  top: 20%;
  z-index: 2;
  width: 76px;
  height: 76px;
  border: 2px dashed #a7f3d0;
  border-radius: 50%;
  animation: rotorPulse 2s linear infinite;
}

.energy-mark {
  position: absolute;
  right: 18%;
  bottom: 20%;
  z-index: 2;
  color: #062033;
  padding: 12px 16px;
  border-radius: 999px;
  background: #a7f3d0;
}

.phone-panel {
  position: absolute;
  left: 16%;
  top: 20%;
  z-index: 2;
  width: 100px;
  height: 178px;
  border: 3px solid #a7f3d0;
  border-radius: 22px;
  background: rgba(6, 20, 38, 0.85);
}

.phone-panel::before {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  top: 34px;
  height: 12px;
  border-radius: 999px;
  background: #a7f3d0;
  box-shadow: 0 30px 0 rgba(167, 243, 208, 0.62), 0 60px 0 rgba(167, 243, 208, 0.36);
}

.dashboard-panel {
  position: absolute;
  right: 13%;
  top: 28%;
  z-index: 2;
  width: 164px;
  height: 116px;
  border: 3px solid #a7f3d0;
  border-radius: 12px;
  background: rgba(6, 20, 38, 0.84);
}

.dashboard-panel::before {
  content: "";
  position: absolute;
  left: 20px;
  bottom: 22px;
  width: 28px;
  height: 44px;
  background: #a7f3d0;
  box-shadow: 42px -18px 0 rgba(167, 243, 208, 0.72), 84px 10px 0 rgba(167, 243, 208, 0.42);
}

.lang-pill {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 46px;
  height: 34px;
  border-radius: 999px;
  color: #062033;
  background: #a7f3d0;
  font-style: normal;
  font-weight: 900;
}

.platform-art .lang-pill:nth-of-type(1) { right: 34%; bottom: 24%; }
.platform-art .lang-pill:nth-of-type(2) { right: 22%; bottom: 34%; }
.platform-art .lang-pill:nth-of-type(3) { right: 14%; bottom: 22%; }

.brand-chip {
  position: absolute;
  left: 42%;
  bottom: 20%;
  z-index: 3;
  display: grid;
  place-items: center;
  min-width: 76px;
  padding: 0 14px;
  height: 58px;
  border-radius: 999px;
  color: #062033;
  background: #a7f3d0;
  font-size: 14px;
  font-weight: 900;
}

.showcase-section {
  background: #f7fafc;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 18px;
}

.showcase-card {
  display: grid;
  grid-template-columns: minmax(180px, 0.72fr) minmax(260px, 1.28fr);
  gap: 26px;
  min-height: 360px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
}

.showcase-visual {
  position: relative;
  min-height: 270px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background:
    linear-gradient(rgba(15, 118, 110, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, 0.08) 1px, transparent 1px),
    #eef5f8;
  background-size: 28px 28px;
  overflow: hidden;
}

.showcase-copy span {
  color: #0f766e;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.showcase-copy h3 {
  margin: 18px 0 16px;
  color: #09213b;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.12;
}

.showcase-copy ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 19px;
  color: #52677a;
  line-height: 1.75;
}

.showcase-copy li::marker {
  color: #0f766e;
}

.drone-body {
  position: absolute;
  left: 50%;
  top: 34%;
  width: 68px;
  height: 24px;
  border-radius: 999px;
  background: #0f766e;
  transform: translate(-50%, -50%);
  animation: hoverFloat 4s ease-in-out infinite;
}

.rotor {
  position: absolute;
  width: 46px;
  height: 46px;
  border: 2px solid #0f766e;
  border-radius: 50%;
  opacity: 0.9;
  animation: rotorPulse 1.8s ease-in-out infinite;
}

.r1 { left: 18%; top: 20%; }
.r2 { right: 18%; top: 20%; animation-delay: -0.3s; }
.r3 { left: 18%; top: 43%; animation-delay: -0.6s; }
.r4 { right: 18%; top: 43%; animation-delay: -0.9s; }

.scan-beam {
  position: absolute;
  left: 50%;
  top: 42%;
  width: 150px;
  height: 150px;
  background: linear-gradient(rgba(15, 118, 110, 0.24), transparent 70%);
  clip-path: polygon(50% 0, 0 100%, 100% 100%);
  transform: translateX(-50%);
  animation: beamSweep 3.4s ease-in-out infinite;
}

.robot-head {
  position: absolute;
  left: 50%;
  top: 22%;
  width: 74px;
  height: 52px;
  border-radius: 18px;
  background: #0f766e;
  transform: translateX(-50%);
}

.robot-body {
  position: absolute;
  left: 50%;
  top: 43%;
  width: 112px;
  height: 132px;
  border-radius: 28px 28px 18px 18px;
  background: #09213b;
  transform: translateX(-50%);
}

.robot-light {
  position: absolute;
  top: 31%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-2);
  animation: robotBlink 2.3s ease-in-out infinite;
}

.l1 { left: calc(50% - 22px); }
.l2 { left: calc(50% + 10px); animation-delay: -0.5s; }

.route-line {
  position: absolute;
  left: 18%;
  bottom: 18%;
  width: 64%;
  height: 2px;
  background: linear-gradient(90deg, transparent, #0f766e, transparent);
  animation: routeMove 3s ease-in-out infinite;
}

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

.topology-section .section-heading h2 {
  color: var(--text);
}

.topology-section .section-heading p {
  color: var(--muted);
}

.topology-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.topology-tabs button {
  padding: 11px 14px;
  border: 1px solid rgba(167, 243, 208, 0.2);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.topology-tabs button.active {
  color: #062033;
  background: var(--accent-2);
}

.topology-stage {
  position: relative;
  min-height: 560px;
  border: 1px solid rgba(167, 243, 208, 0.2);
  border-radius: 12px;
  overflow: hidden;
  background: #061426;
  -webkit-overflow-scrolling: touch;
}

.topology-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.46;
}

.topology-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.topology-svg.active {
  opacity: 1;
  transform: translateY(0);
}

.links path {
  fill: none;
  stroke: rgba(167, 243, 208, 0.68);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-dasharray: 8 8;
  animation: dash 9s linear infinite;
}

.node {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(167, 243, 208, 0.55);
  border-radius: 8px;
  color: #edfaff;
  background: rgba(7, 20, 38, 0.78);
  font-size: 18px;
  font-weight: 800;
  text-align: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.node.hub {
  border-color: rgba(167, 243, 208, 0.92);
  color: #ffffff;
  background: rgba(15, 118, 110, 0.72);
  font-size: 21px;
}

.tier-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.9fr 1.05fr;
  gap: 18px;
}

.tier-layout article {
  padding: 28px;
  border-top: 2px solid #0f766e;
  background: #ffffff;
  min-height: 230px;
}

.tier-layout span {
  color: #0f766e;
  font-weight: 900;
}

.tier-layout h3 {
  margin: 20px 0 12px;
  color: #09213b;
  font-size: 28px;
}

.tier-layout p {
  color: #52677a;
  line-height: 1.75;
}

.interface-section {
  background: #eef5f8;
}

.matrix {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 16px;
}

.matrix article {
  padding: 28px;
  border-left: 3px solid #0f766e;
  background: #ffffff;
}

.matrix h3,
.deliverables h3 {
  margin: 0 0 12px;
  color: #09213b;
  font-size: 24px;
}

.matrix p,
.deliverables p {
  margin: 0;
  color: #52677a;
  line-height: 1.8;
}

.deliverables {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 14px 28px;
  margin-top: 22px;
  padding: 28px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
}

.site-footer {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 1fr;
  gap: 32px;
  padding: 42px clamp(22px, 6vw, 88px);
  border-top: 1px solid rgba(167, 243, 208, 0.18);
  color: var(--text);
  background: #061426;
}

.footer-brand img {
  width: min(220px, 72vw);
  height: auto;
  margin-bottom: 18px;
}

.footer-brand p,
.footer-contact span,
.footer-contact a,
.footer-links a {
  color: var(--muted);
  line-height: 1.7;
}

.footer-links,
.footer-contact {
  display: grid;
  align-content: start;
  gap: 8px;
}

.footer-links h2,
.footer-contact h2 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 18px;
}

.footer-links a,
.footer-contact a {
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--accent-2);
  border-color: rgba(167, 243, 208, 0.5);
}

.records-login {
  min-height: 560px;
}

.records-header {
  position: relative;
}

.records-page {
  min-height: 100dvh;
  padding: 72px clamp(22px, 6vw, 88px);
  color: var(--ink);
  background: #f7fafc;
}

.records-hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(300px, 1.1fr);
  gap: 36px;
  align-items: end;
  margin-bottom: 28px;
}

.records-hero h1 {
  margin: 0;
  color: #09213b;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.04;
}

.records-hero p {
  margin: 0;
  color: #52677a;
  font-size: 18px;
  line-height: 1.7;
}

.records-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.records-stats article {
  padding: 22px;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
}

.records-stats span {
  display: block;
  margin-bottom: 12px;
  color: #52677a;
}

.records-stats strong {
  color: #09213b;
  font-size: 34px;
  line-height: 1;
}

.records-table-wrap {
  overflow-x: auto;
  border: 1px solid #d7e3eb;
  border-radius: 8px;
  background: #ffffff;
  -webkit-overflow-scrolling: touch;
}

.records-table {
  width: 100%;
  min-width: 1180px;
  border-collapse: collapse;
  color: #102033;
}

.records-table th,
.records-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #e3edf2;
  text-align: left;
  vertical-align: top;
  font-size: 14px;
  line-height: 1.55;
}

.records-table th {
  color: #09213b;
  background: #eef5f8;
  font-weight: 800;
}

.records-table td {
  color: #52677a;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.login-page {
  display: grid;
  place-items: center;
  min-height: 100dvh;
  background:
    linear-gradient(90deg, rgba(7, 20, 38, 0.96), rgba(7, 20, 38, 0.64)),
    url("assets/shengbo-render-source.png") center / cover no-repeat;
}

.login-shell {
  display: grid;
  grid-template-columns: minmax(320px, 520px) minmax(260px, 420px);
  width: min(1040px, calc(100vw - 36px));
  min-height: 610px;
  border: 1px solid rgba(167, 243, 208, 0.22);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(5, 17, 32, 0.76);
  backdrop-filter: blur(18px);
}

.login-panel {
  padding: 54px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 56px;
}

.shengbo-logo {
  width: 150px;
}

.ttc-logo {
  width: 210px;
}

.divider {
  width: 1px;
  height: 34px;
  background: rgba(167, 243, 208, 0.38);
}

.login-panel h1 {
  margin-bottom: 18px;
  font-size: 42px;
}

.login-copy {
  color: #c9dce8;
  line-height: 1.7;
}

.login-form {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.login-form label {
  display: grid;
  gap: 8px;
  color: #dceaf3;
}

.login-form input {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid rgba(167, 243, 208, 0.2);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
  outline: none;
}

.login-form input:focus {
  border-color: var(--accent-2);
}

.login-form button {
  height: 48px;
  border: 0;
  border-radius: 8px;
  color: #04111f;
  background: var(--accent-2);
  cursor: pointer;
  transition: transform 0.25s ease;
}

.form-error {
  padding: 10px 12px;
  border: 1px solid rgba(248, 113, 113, 0.32);
  border-radius: 8px;
  color: #fecaca;
  background: rgba(127, 29, 29, 0.28);
}

.login-visual {
  position: relative;
  overflow: hidden;
  border-left: 1px solid rgba(167, 243, 208, 0.18);
}

.scan-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(167, 243, 208, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167, 243, 208, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  animation: drift 18s linear infinite;
}

.login-node {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--accent-2);
  border-radius: 50%;
  background: rgba(40, 199, 199, 0.32);
  animation: float 4.8s ease-in-out infinite;
}

.node-a { left: 25%; top: 28%; }
.node-b { left: 62%; top: 48%; animation-delay: -1.4s; }
.node-c { left: 42%; top: 72%; animation-delay: -2.6s; }

@keyframes dash {
  to { stroke-dashoffset: -160; }
}

@keyframes scan {
  0%, 100% { transform: translateX(-16%); opacity: 0.55; }
  50% { transform: translateX(16%); opacity: 1; }
}

@keyframes drift {
  to { transform: translate3d(36px, 36px, 0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); opacity: 0.55; }
  50% { transform: translateY(-18px); opacity: 1; }
}

@keyframes hoverFloat {
  0%, 100% { transform: translate(-50%, -50%) translateY(0); }
  50% { transform: translate(-50%, -50%) translateY(-12px); }
}

@keyframes rotorPulse {
  0%, 100% { transform: scale(0.9); opacity: 0.45; }
  50% { transform: scale(1.14); opacity: 0.95; }
}

@keyframes beamSweep {
  0%, 100% { opacity: 0.38; transform: translateX(-50%) scaleX(0.76); }
  50% { opacity: 0.82; transform: translateX(-50%) scaleX(1.08); }
}

@keyframes robotBlink {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@keyframes routeMove {
  0%, 100% { transform: translateX(-8%); opacity: 0.45; }
  50% { transform: translateX(8%); opacity: 1; }
}

@keyframes roomPulse {
  0%, 100% { opacity: 0.55; transform: scaleY(0.88); }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes pathDot {
  0%, 100% { transform: scale(0.9); opacity: 0.55; }
  50% { transform: scale(1.22); opacity: 1; }
}

@keyframes gateLift {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-28deg); }
}

@keyframes shieldRing {
  0%, 100% { opacity: 0.25; transform: scale(0.92); }
  50% { opacity: 0.85; transform: scale(1.06); }
}

@media (max-width: 980px) {
  .hero,
  .section-heading,
  .highlight-board,
  .amenity-grid,
  .visual-detail-grid,
  .experience-flow,
  .detail-card,
  .showcase-grid,
  .showcase-card,
  .matrix,
  .deliverables,
  .records-hero,
  .site-footer,
  .login-shell,
  .tier-layout {
    grid-template-columns: 1fr;
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
    gap: 12px;
  }

  .site-nav {
    justify-content: flex-end;
  }

  .brand-lockup img:last-child {
    display: none;
  }

  .brand-lockup {
    min-width: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 62px;
  }

  .hero-panel {
    min-height: 360px;
  }

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

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

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

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

  .topology-stage {
    overflow-x: auto;
    overflow-y: hidden;
  }

  .topology-bg,
  .topology-svg {
    width: 820px;
    max-width: none;
  }

  .detail-card,
  .showcase-card,
  .experience-flow article,
  .matrix article,
  .deliverables {
    padding: 22px;
  }

  .login-visual {
    min-height: 220px;
    border-left: 0;
    border-top: 1px solid rgba(167, 243, 208, 0.18);
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 14px;
    padding: 14px 16px;
    grid-template-columns: 1fr auto;
  }

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

  .records-stats {
    grid-template-columns: 1fr;
  }

  .tech-strip {
    grid-template-columns: 1fr;
  }

  .amenity-metrics,
  .amenity-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
  }

  .site-header.nav-open .site-nav {
    display: block;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-menu-button {
    display: none;
  }

  .nav-menu-panel {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    width: 100%;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-nav a,
  .ghost-button {
    display: grid;
    place-items: center;
    min-height: 38px;
    padding: 9px 8px;
    font-size: 13px;
    text-align: center;
  }

  .brand-lockup {
    min-width: 0;
  }

  .brand-lockup img:first-child {
    width: 108px;
  }

  .site-header form,
  .site-header > .ghost-button {
    grid-column: 1 / -1;
    width: 100%;
    display: none;
  }

  .site-header.nav-open form,
  .site-header.nav-open > .ghost-button {
    display: block;
  }

  .ghost-button {
    width: 100%;
    border-color: rgba(148, 197, 219, 0.24);
  }

  .section {
    padding: 64px 18px;
  }

  .records-page {
    padding: 52px 18px;
  }

  h1 {
    font-size: 38px;
    line-height: 1.05;
  }

  .hero {
    padding: 54px 18px 44px;
  }

  .hero-copy,
  .section-heading p,
  .experience-flow p {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .live-frame {
    min-height: auto;
    padding: 22px;
  }

  .live-frame::before {
    inset: 14px;
  }

  .pulse-line {
    margin: 10px 0 32px;
  }

  .metric-row {
    align-items: flex-start;
    padding: 14px 0;
    font-size: 14px;
  }

  .experience-flow h3,
  .amenity-card h3,
  .visual-copy h3,
  .highlight-tile h3,
  .detail-card h3 {
    font-size: 23px;
  }

  .visual-detail-card {
    min-height: auto;
  }

  .visual-art {
    min-height: 0;
  }

  .highlight-tile {
    min-height: 320px;
    padding: 22px;
  }

  .mini-room,
  .mini-path,
  .mini-gate,
  .mini-shield {
    right: 18px;
    bottom: 22px;
    transform: scale(0.86);
    transform-origin: right bottom;
  }

  .topology-stage {
    min-height: 480px;
    margin-left: -18px;
    margin-right: -18px;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

  .topology-bg,
  .topology-svg {
    width: 760px;
  }

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

  .topology-tabs button {
    padding: 10px 8px;
    font-size: 13px;
  }

  .node {
    font-size: 13px;
  }

  .node.hub {
    font-size: 15px;
  }

  .login-panel {
    padding: 34px 24px;
  }

  .login-page {
    padding: 18px;
    place-items: start center;
  }

  .login-shell {
    width: 100%;
    min-height: auto;
  }

  .brand-row {
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 34px;
  }

  .shengbo-logo {
    width: 128px;
  }

  .ttc-logo {
    width: 168px;
  }

  .login-panel h1 {
    font-size: 34px;
    line-height: 1.08;
  }

  .site-footer {
    padding: 34px 18px;
  }

  .footer-links a,
  .footer-contact a,
  .footer-contact span {
    width: 100%;
  }
}