.saiwei-page {
  --blue-950: #0b0d10;
  --blue-900: #0d0d0d;
  --blue-850: #0d0d0d;
  --blue-800: #272727;
  --blue-700: #c7ff2e;
  --blue-600: #d7ff66;
  --blue-300: #c7ff2e;
  --blue-100: #f2ffde;
  --cream: #ffffff;
  --cream-2: #f4f6f8;
  --cream-3: #e5e7eb;
  --silver-50: #ffffff;
  --silver-100: #f4f6f8;
  --silver-200: #e5e7eb;
  --silver-300: #dbdbdb;
  --silver-400: #9f9f9f;
  --silver-500: #505050;
  --silver-600: #333333;
  --ink: #0d0d0d;
  --muted: #404040;
  --line: rgba(17, 24, 39, 0.14);
  --content: min(calc(100% - 36px), 1350px);
  width: 100%;
  overflow: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family:
    "Outfit",
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  --soft-border: rgba(17, 24, 39, 0.1);
  --soft-border-light: rgba(17, 24, 39, 0.075);
  --soft-shadow: 0 16px 42px rgba(17, 24, 39, 0.075);
  --soft-shadow-sm: 0 9px 25px rgba(17, 24, 39, 0.055);
}

.saiwei-page button {
  font: inherit;
}

.saiwei-page img,
.saiwei-page video {
  display: block;
  max-width: 100%;
}

.saiwei-page .skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  transform: translateY(-180%);
  background: var(--cream);
  color: var(--blue-900);
  padding: 12px 16px;
  border: 1px solid var(--silver-300);
  font-weight: 850;
  border-radius: 12px;
}

.saiwei-page .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #0b0d10;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.saiwei-page .kicker::before {
  content: "";
  width: 32px;
  height: 2px;
  background: #c7ff2e;
}

.saiwei-page .display {
  margin: 0;
  font-size: clamp(2rem, 4vw, 5rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
  font-weight: 950;
}

.saiwei-page .section-title {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
  font-weight: 930;
}

.saiwei-page .section-copy {
  margin: 20px 0 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 1.04rem;
}

.saiwei-page .btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 20px;
  border: 1px solid transparent;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.085em;
  text-transform: uppercase;
  transition: 0.2s ease;
  cursor: pointer;
  border-radius: 999px;
}

.saiwei-page .btn-primary {
  background: var(--blue-700);
  color: #0b0d10;
  box-shadow: 0 14px 34px rgba(11, 13, 16, 0.22);
}

.saiwei-page .btn-outline {
  border-color: var(--silver-400);
  color: var(--blue-900);
  background: transparent;
}

.saiwei-page .btn-cream {
  background: var(--cream);
  color: var(--blue-900);
  border-color: rgba(255, 255, 255, 0.4);
}

.saiwei-page .text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  color: #2563eb;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.saiwei-page .text-link::after {
  content: "→";
}

.saiwei-page .site-header {
  position: relative;
  z-index: 40;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--silver-200);
  backdrop-filter: blur(16px);
}

.saiwei-page .header-inner {
  width: var(--content);
  min-height: 76px;
  margin: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}

.saiwei-page .brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--blue-900);
  font-size: 0.94rem;
  font-weight: 950;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.saiwei-page .brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--blue-700);
  color: #0b0d10;
  clip-path: polygon(50% 0, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
}

.saiwei-page .desktop-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.saiwei-page .desktop-nav a {
  font-size: 0.8rem;
  font-weight: 760;
  color: #424242;
}

.saiwei-page .menu-btn {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--silver-300);
  background: var(--cream);
  color: var(--blue-900);
  cursor: pointer;
  border-radius: 14px;
}

.saiwei-page .menu-btn svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.saiwei-page .mobile-menu {
  position: absolute;
  top: 76px;
  left: 18px;
  right: 18px;
  background: var(--cream);
  border: 1px solid var(--silver-300);
  box-shadow: 0 24px 55px rgba(17, 24, 39, 0.14);
  padding: 10px;
  border-radius: 18px;
  overflow: hidden;
}

.saiwei-page .mobile-menu a {
  display: block;
  padding: 13px 12px;
  border-bottom: 1px solid var(--silver-200);
  font-weight: 760;
}

.saiwei-page .hero {
  position: relative;
  background: var(--cream);
  border-bottom: 1px solid var(--silver-300);
}

.saiwei-page .hero::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 44%;
  clip-path: polygon(15% 0, 100% 0, 100% 100%, 0 100%);
}

.saiwei-page .hero-grid {
  width: var(--content);
  min-height: 600px;
  margin: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(420px, 0.92fr);
  align-items: stretch;
  position: relative;
  z-index: 2;
}

.saiwei-page .hero-copy {
  padding: 50px 60px 40px 0;
  align-self: center;
}

.saiwei-page .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin-bottom: 32px;
  color: var(--silver-600);
  font-size: 0.76rem;
  font-weight: 700;
}

.saiwei-page .breadcrumb span {
  color: var(--silver-400);
}

.saiwei-page .hero .display {
  color: var(--blue-950);
  max-width: 790px;
}

.saiwei-page .hero-lead {
  max-width: 700px;
  margin: 28px 0 0;
  color: #333333;
  font-size: clamp(1.05rem, 1.5vw, 1.26rem);
  line-height: 1.66;
}

.saiwei-page .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.saiwei-page .hero-note {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--blue-900);
  font-size: 0.84rem;
  font-weight: 820;
}

.saiwei-page .hero-note::before {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--silver-400);
}

.saiwei-page .hero-studio {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto;
  color: #fff;
}

.saiwei-page .studio-grid {
  position: absolute;
  inset: 50px 0 130px 24px;
  opacity: 0.27;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(
    to bottom,
    transparent,
    #000 12%,
    #000 88%,
    transparent
  );
}

.saiwei-page .hero-asset {
  position: relative;
  z-index: 1;
  align-self: center;
  min-height: 540px;
  border: 1px solid rgba(216, 221, 227, 0.36);
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.025)
  );
  display: grid;
  place-items: center;
  padding: 34px;
  text-align: center;
}

.saiwei-page .asset-icon {
  width: 64px;
  height: 64px;
  margin: auto;
  border: 1px solid rgba(255, 255, 255, 0.48);
  display: grid;
  place-items: center;
  transform: rotate(45deg);
}

.saiwei-page .asset-icon svg {
  width: 28px;
  height: 28px;
  transform: rotate(-45deg);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.saiwei-page .hero-asset strong {
  display: block;
  margin-top: 26px;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.saiwei-page .hero-asset p {
  max-width: 350px;
  margin: 9px auto 0;
  color: #dbdbdb;
  font-size: 0.84rem;
}

.saiwei-page .asset-path {
  display: inline-block;
  margin-top: 17px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #0b0d10;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  word-break: break-all;
}

.saiwei-page .material-asset .asset-path {
  color: #c7ff2e;
}

.saiwei-page .hero-specs {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(216, 221, 227, 0.42);
  border-top: 0;
  background: rgba(17, 24, 39, 0.5);
}

.saiwei-page .hero-spec {
  padding: 18px 16px;
  border-right: 1px solid rgba(216, 221, 227, 0.32);
}

.saiwei-page .hero-spec small {
  display: block;
  color: #0b0d10;
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.saiwei-page .hero-spec b {
  display: block;
  margin-top: 5px;
  font-size: 0.94rem;
}

.saiwei-page .answer-rail {
  background: linear-gradient(180deg, var(--silver-100), var(--silver-50));
  border-bottom: 1px solid var(--silver-300);
}

.saiwei-page .answer-grid {
  width: var(--content);
  margin: auto;
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 50px;
  padding: 38px 0;
}

.saiwei-page .answer-label {
  color: var(--blue-900);
  font-size: 0.73rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.saiwei-page .answer-grid p {
  margin: 0;
  max-width: 930px;
  color: #424242;
  font-size: 1rem;
}

.saiwei-page .why-carbon {
  padding: 55px 0;
  background: var(--cream);
}

.saiwei-page .decision-head {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 76px;
  align-items: end;
}

.saiwei-page .decision-head .section-copy {
  margin: 0;
}

.saiwei-page .decision-grid {
  margin-top: 50px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 0;
  border: 1px solid var(--silver-300);
}

/* Mirrored grid: the material figure takes the left column, the decision copy
   the right. Scoped by class rather than applied to .decision-grid itself,
   because the Ultra product description shares this stylesheet and keeps the
   original copy-left layout. */
.saiwei-page .decision-grid--flip {
  grid-template-columns: 0.85fr 1.15fr;
}

.saiwei-page .decision-main {
  padding: 46px;
  background: var(--cream-2);
}

.saiwei-page .decision-main h3 {
  margin: 0;
  color: var(--blue-950);
  font-size: 1.85rem;
  line-height: 1.08;
}

.saiwei-page .decision-main p {
  color: #333333;
}

.saiwei-page .question-matrix {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--silver-300);
  border-left: 1px solid var(--silver-300);
}

.saiwei-page .question-cell {
  min-height: 138px;
  padding: 22px;
  border-right: 1px solid var(--silver-300);
  border-bottom: 1px solid var(--silver-300);
  background: var(--cream);
}

.saiwei-page .question-cell small {
  color: var(--silver-500);
  font-size: 0.64rem;
  font-weight: 950;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.saiwei-page .question-cell b {
  display: block;
  margin-top: 10px;
  color: var(--blue-900);
  font-size: 1rem;
  line-height: 1.28;
}

.saiwei-page .material-asset {
  padding: 12px;
  background: #000;
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
}

.saiwei-page .material-asset .macro-placeholder {
  min-height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.06) 0 8px,
    rgba(255, 255, 255, 0.015) 8px 16px
  );
  display: grid;
  place-items: center;
  text-align: center;
  padding: 25px;
}

.saiwei-page .material-asset .macro-placeholder b {
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.saiwei-page .material-asset .macro-placeholder span {
  display: block;
  margin-top: 6px;
  color: var(--blue-300);
  font-size: 0.72rem;
}

.saiwei-page .material-asset p {
  margin: 26px 0 0;
  color: #dbdbdb;
  font-size: 0.88rem;
}

.saiwei-page .research {
  background: var(--blue-950);
  color: white;
  padding: 74px 0;
}

.saiwei-page .research-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 54px;
}

.saiwei-page .research-tag {
  color: #c7ff2e;
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.saiwei-page .research h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.saiwei-page .research p {
  max-width: 970px;
  color: #dbdbdb;
}

.saiwei-page .research .boundary {
  margin-top: 25px;
  padding: 18px 20px;
  border-left: 3px solid var(--silver-400);
  background: rgba(255, 255, 255, 0.055);
  color: #f8f8f8;
  font-size: 0.9rem;
}

.saiwei-page .research a {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.saiwei-page .customize {
  padding: 120px 0;
  background: var(--cream-2);
}

.saiwei-page .customize-head {
  max-width: 850px;
}

.saiwei-page .custom-studio {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--silver-300);
  background: var(--cream);
}

.saiwei-page .custom-visual {
  min-height: 620px;
  padding: 36px;
  background: linear-gradient(145deg, var(--silver-100), var(--silver-300));
  border-right: 1px solid var(--silver-300);
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 20px;
}

.saiwei-page .custom-placeholder {
  border: 1px solid var(--silver-400);
  background: rgba(255, 255, 255, 0.6);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 30px;
  color: var(--blue-900);
}

.saiwei-page .custom-placeholder b {
  display: block;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.saiwei-page .custom-placeholder span {
  display: block;
  margin-top: 7px;
  color: var(--silver-600);
  font-size: 0.74rem;
}

.saiwei-page .visual-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.saiwei-page .visual-mini {
  min-height: 120px;
  border: 1px solid var(--silver-400);
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
  background: var(--cream);
  font-size: 0.72rem;
  font-weight: 850;
  color: var(--blue-900);
}

.saiwei-page .custom-list {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
}

.saiwei-page .custom-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 31px;
  border-bottom: 1px solid var(--silver-300);
  align-items: start;
}

.saiwei-page .custom-row:last-child {
  border-bottom: 0;
}

.saiwei-page .custom-row:hover {
  background: var(--blue-100);
}

.saiwei-page .custom-num {
  color: var(--silver-400);
  font-size: 1.8rem;
  font-weight: 300;
}

.saiwei-page .custom-row h3 {
  margin: 0;
  color: var(--blue-950);
  font-size: 1.28rem;
  line-height: 1.12;
}

.saiwei-page .custom-row p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.saiwei-page .size-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 70px;
  align-items: start;
}

.saiwei-page .size-index {
  font-size: 8.4rem;
  line-height: 0.8;
  color: var(--silver-200);
  font-weight: 950;
  letter-spacing: -0.08em;
}

.saiwei-page .size-side h2 {
  margin: 20px 0 0;
  font-size: 2.5rem;
  line-height: 0.96;
  letter-spacing: -0.05em;
  color: var(--blue-950);
}

.saiwei-page .size-head {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1.35fr;
  background: var(--silver-100);
  border-bottom: 1px solid var(--silver-300);
  color: var(--silver-600);
  font-size: 0.67rem;
  font-weight: 950;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.saiwei-page .size-head span,
.saiwei-page .size-row span {
  padding: 16px 19px;
  border-right: 1px solid var(--silver-300);
}

.saiwei-page .size-head span:last-child,
.saiwei-page .size-row span:last-child {
  border-right: 0;
}

.saiwei-page .size-row {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1.35fr;
  border-bottom: 1px solid var(--silver-200);
  background: var(--cream);
  transition: 0.18s ease;
}

.saiwei-page .size-row span:nth-child(2) {
  font-variant-numeric: tabular-nums;
  color: #424242;
}

.saiwei-page .evidence {
  padding: 112px 0;
  background: linear-gradient(180deg, var(--silver-100), var(--silver-200));
}

.saiwei-page .evidence-head {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
  align-items: end;
}

.saiwei-page .evidence-head .section-copy {
  margin: 0;
}

.saiwei-page .evidence-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
}

.saiwei-page .verified-panel {
  background: var(--blue-900);
  color: white;
  padding: 38px;
}

.saiwei-page .verified-panel h3,
.saiwei-page .measure-panel h3 {
  margin: 0 20px;
  font-size: 1.4rem;
  line-height: 1.1;
}

.saiwei-page .verified-list {
  margin-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.26);
}

.saiwei-page .verified-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 16px 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  align-items: center;
}

.saiwei-page .verified-row span {
  color: #dbdbdb;
  font-size: 0.86rem;
}

.saiwei-page .verified-row b {
  color: var(--blue-300);
  font-size: 0.8rem;
  text-align: right;
}

.saiwei-page .measure-panel {
  background: var(--cream);
  border: 1px solid var(--silver-400);
  padding: 38px;
}

.saiwei-page .measure-table {
  margin-top: 28px;
  border-top: 1px solid var(--silver-300);
}

.saiwei-page .measure-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 18px 15px;
  border-bottom: 1px solid var(--silver-300);
  align-items: center;
}

.saiwei-page .measure-row b {
  color: var(--blue-950);
  font-size: 0.9rem;
}

.saiwei-page .status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #333333;
  font-size: 0.7rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-align: right;
}

.saiwei-page .status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--silver-400);
  box-shadow: 0 0 0 4px var(--silver-100);
}

.saiwei-page .status.verified {
  color: #12603c;
}

.saiwei-page .status.verified::before {
  background: #1a8f5a;
  box-shadow: 0 0 0 4px rgba(26, 143, 90, 0.16);
}

.saiwei-page .evidence-gate {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--blue-100);
  border-left: 3px solid var(--blue-700);
  color: #424242;
  font-size: 0.82rem;
}

.saiwei-page .comparison {
  padding: 116px 0;
  background: var(--cream-2);
}

.saiwei-page .compare-head {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 70px;
  align-items: end;
}

.saiwei-page .compare-head .section-copy {
  margin: 0;
}

.saiwei-page .compare-board {
  margin-top: 50px;
  border: 1px solid var(--silver-300);
  overflow-x: auto;
  background: var(--cream);
}

.saiwei-page .compare-table {
  min-width: 760px;
  width: 100%;
  border-collapse: collapse;
}

.saiwei-page .compare-table th,
.saiwei-page .compare-table td {
  padding: 17px 20px;
  border-bottom: 1px solid var(--silver-300);
  border-right: 1px solid var(--silver-300);
  text-align: left;
  vertical-align: top;
}

.saiwei-page .compare-table th:last-child,
.saiwei-page .compare-table td:last-child {
  border-right: 0;
}

.saiwei-page .compare-table tr:last-child td {
  border-bottom: 0;
}

.saiwei-page .compare-table thead th {
  background: var(--blue-900);
  color: white;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.saiwei-page .compare-table thead th:nth-child(3) {
  background: var(--silver-500);
}

.saiwei-page .compare-table tbody td:first-child {
  font-weight: 850;
  color: var(--blue-950);
}

.saiwei-page .compare-table tbody td {
  font-size: 0.88rem;
  color: #333333;
}

.saiwei-page .compare-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.saiwei-page .process {
  padding: 110px 0;
  background: #0b0d10;
  color: white;
}

.saiwei-page .process .kicker {
  color: var(--cream);
}

.saiwei-page .process .kicker::before {
  background: var(--silver-300);
}

.saiwei-page .process .section-copy {
  margin: 0;
  color: #ebebeb;
}

.saiwei-page .process-track {
  margin: 54px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.48);
}

.saiwei-page .process-step {
  position: relative;
  padding: 29px 24px 0 0;
  min-height: 180px;
}

.saiwei-page .process-step::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cream);
  box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.14);
}

.saiwei-page .process-step small {
  color: #dbdbdb;
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.saiwei-page .process-step b {
  display: block;
  margin-top: 13px;
  font-size: 1.05rem;
  line-height: 1.25;
}

.saiwei-page .process-lower {
  margin-top: 45px;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 36px;
  align-items: stretch;
}

.saiwei-page .process-note {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.06);
  color: #ebebeb;
  font-size: 0.88rem;
}

.saiwei-page .order-card {
  background: var(--cream);
  color: var(--blue-950);
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.saiwei-page .order-card-head {
  padding: 16px 20px;
  background: var(--blue-900);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 950;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.saiwei-page .order-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--silver-300);
  align-items: center;
}

.saiwei-page .order-row:last-child {
  border-bottom: 0;
}

.saiwei-page .order-row span {
  color: var(--silver-600);
  font-size: 0.75rem;
  font-weight: 850;
}

.saiwei-page .order-row b {
  font-size: 1.3rem;
}

.saiwei-page .regional {
  padding: 112px 0;
  background: var(--cream);
}

.saiwei-page .regional-head {
  max-width: 860px;
  margin-bottom: 48px;
}

.saiwei-page .region-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--silver-300);
}

.saiwei-page .region {
  padding: 40px;
  background: var(--cream-2);
}

.saiwei-page .region:first-child {
  border-right: 1px solid var(--silver-300);
}

.saiwei-page .region-code {
  color: #0b0d10;
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.saiwei-page .region h3 {
  margin: 20px 0 0;
  font-size: 2rem;
  line-height: 1.05;
  color: var(--blue-950);
  letter-spacing: -0.035em;
}

.saiwei-page .region p {
  color: #636363;
  font-size: 0.9rem;
}

.saiwei-page .shipping-list {
  margin-top: 26px;
  border-top: 1px solid var(--silver-300);
}

.saiwei-page .shipping-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 15px 15px;
  border-bottom: 1px solid var(--silver-300);
  font-size: 0.84rem;
}

.saiwei-page .shipping-row span {
  color: var(--muted);
}

.saiwei-page .shipping-row b {
  color: var(--blue-900);
  text-align: right;
}

.saiwei-page .us-strip {
  margin-top: 20px;
  padding: 22px 24px;
  background: var(--blue-900);
  color: white;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: center;
}

.saiwei-page .us-strip b {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-300);
}

.saiwei-page .us-strip p {
  margin: 0;
  color: #ebebeb;
  font-size: 0.86rem;
}

.saiwei-page .faq {
  padding: 118px 0;
  background: var(--blue-950);
  color: white;
}

.saiwei-page .faq-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 75px;
  align-items: start;
}

.saiwei-page .faq-side {
  position: sticky;
  top: 30px;
}

.saiwei-page .faq .kicker {
  color: var(--blue-300);
}

.saiwei-page .faq .kicker::before {
  background: #c7ff2e;
}

.saiwei-page .faq-side h2 {
  margin: 18px 0 0;
  font-size: clamp(2.5rem, 3.33vw, 3rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.saiwei-page .faq-side p {
  color: #dbdbdb;
}

.saiwei-page .faq-list {
  border-top: 1px solid rgba(209, 213, 219, 0.34);
}

.saiwei-page .faq-item {
  border-bottom: 1px solid rgba(209, 213, 219, 0.34);
}

.saiwei-page .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 1fr 40px;
  gap: 20px;
  align-items: center;
  padding: 24px 15px;
  font-size: 1.05rem;
  font-weight: 820;
}

.saiwei-page .faq-item summary::after {
  content: "+";
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(209, 213, 219, 0.45);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 400;
}

.saiwei-page .faq-answer {
  max-width: 900px;
  padding: 0 48px 24px 15px;
  color: #dbdbdb;
  font-size: 0.92rem;
}

.saiwei-page .faq-answer a {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.saiwei-page .related {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--silver-100), var(--silver-50));
}

.saiwei-page .related-head {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 60px;
  align-items: end;
}

.saiwei-page .related-head .section-copy {
  margin: 0;
}

.saiwei-page .related-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--silver-300);
  border-left: 1px solid var(--silver-300);
}

.saiwei-page .related-card {
  min-height: 190px;
  padding: 26px;
  border-right: 1px solid var(--silver-300);
  border-bottom: 1px solid var(--silver-300);
  background: var(--cream);
  transition: 0.18s ease;
}

.saiwei-page .related-card small {
  color: var(--silver-500);
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.saiwei-page .related-card b {
  display: block;
  margin-top: 16px;
  color: var(--blue-950);
  font-size: 1rem;
  line-height: 1.3;
}

.saiwei-page .related-card span {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.78rem;
}

.saiwei-page .final-cta {
  position: relative;
  padding: 116px 0;
  background: linear-gradient(125deg, #0b0d10, #272727);
  color: white;
  overflow: hidden;
}

.saiwei-page .final-cta::before {
  content: "CARBON";
  position: absolute;
  right: -30px;
  bottom: -58px;
  font-size: clamp(8rem, 21vw, 20rem);
  font-weight: 950;
  line-height: 0.78;
  letter-spacing: -0.09em;
  color: rgba(255, 255, 255, 0.065);
}

.saiwei-page .cta-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 70px;
  align-items: end;
}

.saiwei-page .final-cta h2 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 3.3rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.saiwei-page .final-cta p {
  max-width: 690px;
  color: #ebebeb;
}

.saiwei-page .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.saiwei-page .cta-qualifier {
  padding: 23px;
  border-top: 1px solid rgba(255, 255, 255, 0.34);
  border-bottom: 1px solid rgba(255, 255, 255, 0.34);
  color: #f4f6f8;
  font-size: 0.82rem;
}

.saiwei-page .launch-note {
  margin-top: 18px;
  padding: 13px 15px;
  background: rgba(17, 24, 39, 0.22);
  border-left: 3px solid var(--silver-300);
  font-size: 0.74rem;
  color: #ebebeb;
}

.saiwei-page .page-footer {
  background: var(--cream-2);
  border-top: 1px solid var(--silver-300);
}

.saiwei-page .footer-grid {
  width: var(--content);
  margin: auto;
  padding: 42px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
}

.saiwei-page .footer-grid h2 {
  margin: 0;
  color: var(--blue-950);
  font-size: 1rem;
}

.saiwei-page .footer-grid p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.saiwei-page .footer-mark {
  color: var(--silver-500);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.saiwei-page .mobile-cta {
  display: none;
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 70;
  padding: 8px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--silver-300);
  box-shadow: 0 18px 50px rgba(17, 24, 39, 0.2);
  backdrop-filter: blur(12px);
}

.saiwei-page .mobile-cta .btn {
  width: 100%;
}

@media (max-width: 1120px) {
  .saiwei-page .desktop-nav {
    display: none;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .menu-btn {
    display: grid;
    place-items: center;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .header-inner {
    grid-template-columns: auto 1fr auto;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .header-inner > .btn {
    display: none;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .hero::before {
    width: 46%;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .hero-copy {
    padding-right: 42px;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .hero-studio {
    padding-left: 30px;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .decision-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .material-asset {
    min-height: 520px;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .custom-studio {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .size-grid {
    grid-template-columns: 300px 1fr;
    gap: 45px;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .evidence-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1120px) {
  .saiwei-page .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .saiwei-page .display {
    font-size: clamp(2.4rem, 10vw, 5rem);
  }
}

@media (max-width: 860px) {
  .saiwei-page .section-title {
    font-size: clamp(2rem, 6vw, 2.5rem);
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero {
    background: var(--cream);
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero::before {
    display: none;
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    width: 100%;
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero-copy {
    width: var(--content);
    margin: auto;
    padding: 48px 0 56px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero-studio {
    min-height: auto;
    padding: 46px 18px;
    background: linear-gradient(145deg, #0b0d10, #272727);
  }
}

@media (max-width: 860px) {
  .saiwei-page .hero-asset {
    min-height: 420px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .studio-grid {
    inset: 30px 18px 105px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .answer-grid,
  .saiwei-page .decision-head,
  .saiwei-page .research-grid,
  .saiwei-page .evidence-head,
  .saiwei-page .compare-head,
  .saiwei-page .process-head,
  .saiwei-page .related-head,
  .saiwei-page .cta-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .answer-grid {
    gap: 12px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .custom-studio {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .saiwei-page .custom-visual {
    border-right: 0;
    border-bottom: 1px solid var(--silver-300);
    min-height: 480px;
  }
}

@media (max-width: 860px) {
  /* minmax(0,1fr) not 1fr: a bare 1fr track floors at min-content, so the
     comparison table's 760px min-width stretched the track (and .saiwei-page
     with it) past the viewport, where overflow-x:hidden silently clipped it. */
  .saiwei-page .size-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 860px) {
  .saiwei-page .size-side,
  .saiwei-page .faq-side {
    position: static;
  }
}

@media (max-width: 860px) {
  .saiwei-page .evidence-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .saiwei-page .process-track {
    grid-template-columns: 1fr 1fr;
    border-top: 0;
    gap: 0;
  }
}

@media (max-width: 860px) {
  .saiwei-page .process-step {
    border-top: 1px solid rgba(255, 255, 255, 0.35);
    padding: 24px 18px 24px 0;
    min-height: 145px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .process-step::before {
    top: 18px;
    left: auto;
    right: 8px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .process-lower {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .saiwei-page .region-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .saiwei-page .region:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--silver-300);
  }
}

@media (max-width: 860px) {
  .saiwei-page .faq-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }
}

@media (max-width: 860px) {
  .saiwei-page .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .saiwei-page .us-strip {
    grid-template-columns: 1fr;
    gap: 7px;
  }
}

@media (max-width: 620px) {
  .saiwei-page {
    --content: min(calc(100% - 28px), 1350px);
  }
}

@media (max-width: 620px) {
  .saiwei-page .header-inner {
    min-height: 68px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .mobile-menu {
    top: 68px;
    left: 14px;
    right: 14px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .brand {
    font-size: 0.82rem;
  }
}

@media (max-width: 620px) {
  .saiwei-page .brand-mark {
    width: 31px;
    height: 31px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-copy {
    padding: 0px 0 46px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .breadcrumb {
    margin-bottom: 26px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-actions {
    display: grid;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-actions .btn {
    width: 100%;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-studio {
    padding: 34px 14px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-asset {
    min-height: 350px;
    padding: 24px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-specs {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-spec {
    border-right: 0;
    border-bottom: 1px solid rgba(216, 221, 227, 0.3);
  }
}

@media (max-width: 620px) {
  .saiwei-page .hero-spec:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 620px) {
  .saiwei-page .why-carbon,
  .saiwei-page .customize,
  .saiwei-page .size-lab,
  .saiwei-page .evidence,
  .saiwei-page .comparison,
  .saiwei-page .regional,
  .saiwei-page .faq,
  .saiwei-page .related,
  .saiwei-page .final-cta {
    padding: 60px 0;
  }
}

@media (max-width: 620px) {
  .saiwei-page .decision-main,
  .saiwei-page .material-asset,
  .saiwei-page .verified-panel,
  .saiwei-page .measure-panel,
  .saiwei-page .region {
    padding: 28px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .question-matrix {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .custom-visual {
    padding: 20px;
    min-height: 390px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .visual-split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .custom-row {
    grid-template-columns: 50px 1fr;
    padding: 24px 20px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .size-index {
    font-size: 6.4rem;
  }
}

@media (max-width: 620px) {
  .saiwei-page .size-board {
    overflow-x: auto;
  }
}

@media (max-width: 620px) {
  .saiwei-page .size-board-inner {
    min-width: 620px;
  }
}

@media (max-width: 620px) {
  .saiwei-page .process-track {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .process-step {
    min-height: auto;
  }
}

@media (max-width: 620px) {
  .saiwei-page .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .faq-item summary {
    font-size: 0.96rem;
  }
}

@media (max-width: 620px) {
  .saiwei-page .faq-answer {
    padding-right: 0;
  }
}

@media (max-width: 620px) {
  .saiwei-page .cta-actions {
    display: grid;
  }
}

@media (max-width: 620px) {
  .saiwei-page .cta-actions .btn {
    width: 100%;
  }
}

@media (max-width: 620px) {
  .saiwei-page .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .saiwei-page .mobile-cta {
    display: block;
  }
}

@media (max-width: 620px) {
  .saiwei-page main {
    padding-bottom: 84px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .saiwei-page * {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

.saiwei-page .answer-rail,
.saiwei-page .decision-grid,
.saiwei-page .question-matrix,
.saiwei-page .custom-studio,
.saiwei-page .size-board,
.saiwei-page .verified-list,
.saiwei-page .measure-panel,
.saiwei-page .evidence-gate,
.saiwei-page .compare-board,
.saiwei-page .process-track,
.saiwei-page .order-card,
.saiwei-page .region-grid,
.saiwei-page .shipping-list,
.saiwei-page .faq-list,
.saiwei-page .related-grid {
  border-radius: 26px;
  overflow: hidden;
  box-shadow: var(--soft-shadow-sm);
}

.saiwei-page .hero-asset,
.saiwei-page .custom-visual,
.saiwei-page .material-asset .macro-placeholder,
.saiwei-page .related-card {
  border-radius: 20px;
  overflow: hidden;
}

.saiwei-page .question-cell,
.saiwei-page .evidence-gate,
.saiwei-page .process-note,
.saiwei-page .cta-qualifier,
.saiwei-page .launch-note {
  border-radius: 16px;
}

.saiwei-page .hero-spec,
.saiwei-page .verified-row,
.saiwei-page .measure-row,
.saiwei-page .compare-table th,
.saiwei-page .compare-table td,
.saiwei-page .order-row,
.saiwei-page .shipping-row,
.saiwei-page .faq-item {
  border-color: var(--soft-border) !important;
}

.saiwei-page section.verified-panel,
.saiwei-page section.measure-panel {
  padding: 38px !important;
}

@media (max-width: 780px) {
  .saiwei-page section {
    padding: 55px 0 !important;
  }
}

/* Table/board scroll restoration -------------------------------------------
   The batched `overflow: hidden` rule earlier in this file overrides the
   max-width:620px `overflow-x: auto` on these boards, so their hidden columns
   were unreachable. Declared last, these win: the boards keep clipping their
   rounded corners vertically and scroll sideways. */
.saiwei-page .compare-board,
.saiwei-page .size-board {
  overflow-x: auto;
  overflow-y: hidden;
}