/* ============================================================
   VARIABLE ALIASES
   Maps homepage long-form names → shorthand names used below.
   If your homepage already defines these shorthand names,
   you can delete this block.
   ============================================================ */
:root {
  --deep: var(--deep-blue);
  --lg: var(--light-grey);
  --soft: var(--soft-blue);
  --r-sm: var(--radius-sm);
  --r-md: var(--radius-md);
  --r-lg: var(--radius-lg);
  --tr: var(--transition);
  --ff-d: var(--font-display);
  --ff-h: var(--font-heading);
  --ff-b: var(--font-body);
}

/* ============================================================
   UTILITY CLASSES
   These must exist somewhere. If your homepage already defines
   .container, .section-tag, .section-heading, .section-subtext
   under different names, delete this block and rename in HTML.
   ============================================================ */
.wrap {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 2rem;
}

.stag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--ff-h);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 1rem;
}
/* .stag::before {
  content: '';
  width: 1.8rem;
  height: 2px;
  background: var(--red);
  flex-shrink: 0;
} */

h2.sh {
  font-family: var(--ff-d);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--deep);
  margin-bottom: 1rem;
}
h2.sh--white {
  color: white;
}

.sub {
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.82;
  color: #5a6175;
  max-width: 680px;
}

/* ============================================================
   DISTRIBUTION TRANSFORMERS — Inner Sections Stylesheet
   Sections: Overview · Stats Band · Product Variants ·
             Technical Specifications · Construction Details ·
             Applications · Why Trinity · How It Works ·
             Power Fundamentals

   Depends on homepage CSS for:
     --red, --blue (as --blue), --deep (as --deep-blue),
     --soft (as --soft-blue), --lg (as --light-grey),
     --dark, --mid, --border, --shadow-sm/md/lg,
     --shadow-blue/red, --r-sm/md/lg, --tr (as --transition),
     --ff-d, --ff-h, --ff-b (font family variables),
     .wrap (or .container), .stag (or .section-tag),
     h2.sh (or .section-heading), h2.sh--white,
     .sub (or .section-subtext),
     .anim-fade-up/left/right, .anim-scale-in,
     .d1–.d6, .anim-visible

   Note: this file uses the shorthand variable names from the
   full standalone page (--deep, --lg, --r-lg, --tr, --ff-d,
   etc.). If your homepage uses the long-form names
   (--deep-blue, --light-grey, --radius-lg, --transition,
   --font-display), add these aliases once in your root:
     --deep: var(--deep-blue);
     --lg:   var(--light-grey);
     --r-sm: var(--radius-sm);
     --r-md: var(--radius-md);
     --r-lg: var(--radius-lg);
     --tr:   var(--transition);
     --ff-d: var(--font-display);
     --ff-h: var(--font-heading);
     --ff-b: var(--font-body);
   ============================================================ */

/* ============================================================
   CERT PILLS  (shared across overview + variants)
   ============================================================ */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 2rem;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.85rem;
  background: rgba(21, 73, 155, 0.07);
  border: 1px solid rgba(21, 73, 155, 0.15);
  border-radius: 100px;
  font-family: var(--ff-h);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--deep);
}
.pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

/* ============================================================
   1. OVERVIEW
   ============================================================ */
#overview {
  padding: 6rem 0 5rem;
  background: white;
}

.ov-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.ov-img {
  position: relative;
}
.ov-img img {
  width: 100%;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
}

.ov-badge {
  position: absolute;
  top: -1rem;
  right: -1rem;
  background: var(--red);
  color: white;
  border-radius: var(--r-md);
  padding: 1.2rem 1.4rem;
  text-align: center;
  box-shadow: var(--shadow-red);
}
.ov-badge-num {
  font-family: var(--ff-d);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
}
.ov-badge-num sup {
  font-size: 1.1rem;
}
.ov-badge-lbl {
  font-family: var(--ff-h);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-top: 0.2rem;
}

.ov-hls {
  display: grid;
  /* grid-template-columns: 1fr 1fr; */
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.hl {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  background: var(--lg);
  border-radius: var(--r-md);
  border-left: 3px solid var(--red);
  transition:
    transform var(--tr),
    box-shadow var(--tr);
}
.hl:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.hl-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}
.hl-text h5 {
  font-family: var(--ff-h);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 0.2rem;
}
.hl-text p {
  font-size: 0.78rem;
  color: var(--mid);
  line-height: 1.5;
}

/* ============================================================
   2. STATS BAND
   ============================================================ */
#stats {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--deep) 0%, #0a1632 100%);
  position: relative;
  overflow: hidden;
}
#stats::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(63, 111, 198, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--r-lg);
  overflow: hidden;
  position: relative;
  z-index: 1;
}
.stat {
  padding: 3rem 2rem;
  text-align: center;
  background: rgba(10, 22, 50, 0.4);
  transition: background var(--tr);
}
.stat:hover {
  background: rgba(255, 255, 255, 0.04);
}
.stat-num {
  font-family: var(--ff-d);
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  color: white;
}
.stat-num span {
  color: var(--red);
}
.stat-lbl {
  font-family: var(--ff-h);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 0.6rem;
  line-height: 1.45;
}

/* ============================================================
   3. PRODUCT VARIANTS
   ============================================================ */
#variants {
  padding: 6rem 0;
  background: var(--lg);
}

.var-header {
  text-align: center;
  margin-bottom: 4rem;
}
.var-header .sub {
  margin: 0 auto;
}

.var-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.vcard {
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--tr),
    box-shadow var(--tr),
    border-color var(--tr);
}
.vcard:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(210, 37, 46, 0.18);
}

.vcard-img {
  height: 220px;
  background: linear-gradient(135deg, #f0f3f8, #e4eaf5);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.vcard-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1.5rem;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.vcard:hover .vcard-img img {
  transform: scale(1.06);
}

.vcard-badge {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  background: var(--deep);
  color: white;
  font-family: var(--ff-h);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  border-radius: 4px;
}

.vcard-body {
  padding: 1.6rem 1.8rem 1.8rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.vcard-title {
  font-family: var(--ff-d);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--deep);
  line-height: 1.15;
  margin-bottom: 0.5rem;
}
.vcard-range {
  font-family: var(--ff-h);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.8rem;
}
.vcard-rule {
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), transparent);
  border-radius: 2px;
  margin-bottom: 0.9rem;
  transition: width 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.vcard:hover .vcard-rule {
  width: 60px;
}

.vcard-desc {
  font-size: 0.86rem;
  color: #5a6175;
  line-height: 1.72;
  flex: 1;
}

.vcard-feats {
  margin-top: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.vcard-feat {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--mid);
  line-height: 1.5;
}
.vcard-feat::before {
  content: "✓";
  color: var(--red);
  font-weight: 800;
  font-size: 0.72rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.vcard-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1rem;
}
.vchip {
  padding: 0.26rem 0.65rem;
  background: rgba(15, 46, 99, 0.07);
  border-radius: 100px;
  font-family: var(--ff-h);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--deep);
}

.vcard-footer {
  margin-top: 1.3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.vcard-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--ff-h);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--red);
  transition: gap var(--tr);
  text-decoration: none;
}
.vcard-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.vcard-link:hover {
  gap: 0.65rem;
}

/* ============================================================
   4. TECHNICAL SPECIFICATIONS
   ============================================================ */
#specs {
  padding: 6rem 0;
  background: white;
}

.specs-hdr {
  margin-bottom: 3rem;
}

.spec-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.spec-tab {
  padding: 0.65rem 1.5rem;
  font-family: var(--ff-h);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  background: var(--lg);
  color: var(--mid);
  border: 1.5px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--tr);
}
.spec-tab:hover {
  color: var(--deep);
  background: white;
  border-color: var(--border);
}
.spec-tab.active {
  background: var(--deep);
  color: white;
  border-color: var(--deep);
  box-shadow: var(--shadow-blue);
}

.spec-panel {
  display: none;
}
.spec-panel.active {
  display: grid;
  grid-template-columns: 1.4fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.spec-left {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.spec-img {
  width: 100%;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  object-fit: cover;
  background: #f0f3f8;
  padding: 0rem;
  aspect-ratio: 1;
  height: 350px;
}

.spec-feats h4 {
  font-family: var(--ff-h);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.9rem;
}
.feat-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 0;
  margin: 0;
}
.feat-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.83rem;
  color: var(--mid);
  line-height: 1.6;
  list-style: none;
}
.feat-list li::before {
  content: "✓";
  color: var(--red);
  font-weight: 800;
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.spec-tbl {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.tbl-head {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  background: var(--deep);
  color: white;
  padding: 0.85rem 1.2rem;
  font-family: var(--ff-h);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.trow {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--border);
  transition: background var(--tr);
}
.trow:last-child {
  border-bottom: none;
}
.trow:hover {
  background: var(--lg);
}
.tp {
  font-family: var(--ff-h);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dark);
}
.tv {
  font-size: 0.83rem;
  color: var(--mid);
  line-height: 1.5;
}

/* ============================================================
   5. CONSTRUCTION DETAILS
   ============================================================ */
#construction {
  padding: 6rem 0;
  background: var(--lg);
}

.con-header {
  text-align: center;
  margin-bottom: 4rem;
}
.con-header .sub {
  margin: 0 auto;
}

.con-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.con-card {
  background: white;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition:
    transform var(--tr),
    box-shadow var(--tr),
    border-color var(--tr);
}
.con-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.con-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(210, 37, 46, 0.15);
}
.con-card:hover::after {
  transform: scaleX(1);
}
.con-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.con-title {
  font-family: var(--ff-d);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.con-desc {
  font-size: 0.84rem;
  color: var(--mid);
  line-height: 1.65;
}
.con-detail {
  margin-top: 0.8rem;
  font-family: var(--ff-h);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}

/* ============================================================
   6. APPLICATIONS
   ============================================================ */
#applications {
  padding: 6rem 0;
  background: white;
}

.app-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.app-header .sub {
  margin: 0 auto;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}
.app-card {
  background: var(--lg);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  padding: 1.8rem 1.4rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--tr),
    box-shadow var(--tr),
    border-color var(--tr),
    background var(--tr);
}
.app-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s ease;
}
.app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(210, 37, 46, 0.15);
  background: white;
}
.app-card:hover::before {
  transform: scaleX(1);
}
.app-icon {
  font-size: 2.2rem;
}
.app-title {
  font-family: var(--ff-h);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--deep);
  line-height: 1.3;
}
.app-desc {
  font-size: 0.76rem;
  color: var(--mid);
  line-height: 1.55;
}

/* ============================================================
   7. WHY CHOOSE TRINITY
   ============================================================ */
#why {
  padding: 6rem 0;
  background: var(--deep);
  position: relative;
  overflow: hidden;
}
#why::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 10% 50%, rgba(63, 111, 198, 0.25) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 90% 30%, rgba(210, 37, 46, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.why-header {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
  z-index: 1;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}
.why-card {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-lg);
  padding: 2rem 1.6rem;
  position: relative;
  overflow: hidden;
  transition:
    background var(--tr),
    transform var(--tr),
    border-color var(--tr);
}
.why-card::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.why-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-5px);
}
.why-card:hover::before {
  transform: scaleX(1);
}
.why-icon {
  font-size: 2rem;
  margin-bottom: 1.1rem;
}
.why-title {
  font-family: var(--ff-d);
  font-size: 1.1rem;
  font-weight: 800;
  color: white;
  margin-bottom: 0.7rem;
  line-height: 1.2;
}
.why-desc {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.62);
  line-height: 1.7;
}

/* ============================================================
   8. HOW IT WORKS
   ============================================================ */
#how-it-works {
  padding: 6rem 0;
  background: var(--lg);
}

.how-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-top: 2rem;
}
.how-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.2rem 1.4rem;
  background: var(--white);
  border-radius: var(--r-md);
  border-left: 3px solid var(--red);
  transition:
    transform var(--tr),
    box-shadow var(--tr);
}
.how-step:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}
.how-step-num {
  font-family: var(--ff-d);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--red);
  line-height: 1;
  flex-shrink: 0;
  min-width: 2rem;
}
.how-step-text h5 {
  font-family: var(--ff-h);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 0.25rem;
}
.how-step-text p {
  font-size: 0.83rem;
  color: var(--mid);
  line-height: 1.6;
}

/* Voltage flow card */
.voltage-flow {
  background: var(--lg);
  border-radius: var(--r-lg);
  padding: 2rem;
  border: 1px solid var(--border);
}
.vf-label {
  font-family: var(--ff-h);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 1.5rem;
}
.vf-steps {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.vf-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  background: white;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
}
.vf-kv {
  font-family: var(--ff-d);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--deep);
  min-width: 70px;
}
.vf-kv.ht {
  color: var(--red);
}
.vf-detail {
  flex: 1;
}
.vf-detail h6 {
  font-family: var(--ff-h);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 0.15rem;
}
.vf-detail p {
  font-size: 0.75rem;
  color: var(--mid);
  line-height: 1.45;
}
.vf-arr {
  font-size: 1.1rem;
  color: var(--red);
  text-align: center;
  padding: 0.2rem 0;
  font-weight: 700;
}

/* Key facts 2×2 below voltage flow */
.key-facts {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.kf {
  background: white;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  padding: 1rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--tr);
}
.kf:hover {
  transform: translateY(-2px);
}
.kf-num {
  font-family: var(--ff-d);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--deep);
  line-height: 1;
}
.kf-num span {
  font-size: 0.9rem;
  color: var(--red);
}
.kf-lbl {
  font-size: 0.72rem;
  color: var(--mid);
  margin-top: 0.25rem;
  line-height: 1.35;
}

/* ============================================================
   9. POWER FUNDAMENTALS
   ============================================================ */
#power-fundamentals {
  padding: 6rem 0;
  background: var(--lg);
}

.fund-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: center;
}

.fund-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}
.ffact {
  background: white;
  border-radius: var(--r-md);
  padding: 1.3rem;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--tr),
    box-shadow var(--tr);
}
.ffact:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.ffact-num {
  font-family: var(--ff-d);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--deep);
  line-height: 1;
}
.ffact-num span {
  font-size: 1rem;
  color: var(--red);
}
.ffact-lbl {
  font-size: 0.78rem;
  color: var(--mid);
  margin-top: 0.35rem;
  line-height: 1.4;
}

/* Diagram card */
.fund-visual {
  background: white;
  border-radius: var(--r-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.fund-vlbl {
  font-family: var(--ff-h);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mid);
  text-align: center;
  margin-bottom: 2rem;
}

.diag {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}
.d-side {
  text-align: center;
  flex: 1;
}
.d-side-lbl {
  font-family: var(--ff-h);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.5rem;
}
.d-v {
  font-family: var(--ff-d);
  font-size: 2rem;
  font-weight: 700;
  color: var(--deep);
  line-height: 1;
}
.d-v.hi {
  color: var(--red);
}
.d-w {
  margin-top: 0.4rem;
  font-size: 0.72rem;
  color: var(--mid);
  line-height: 1.4;
}
.d-core {
  flex: 2;
}
.d-core-inner {
  background: linear-gradient(180deg, var(--deep), var(--soft));
  border-radius: var(--r-sm);
  padding: 1.1rem 0.8rem;
  text-align: center;
}
.d-core-lbl {
  font-family: var(--ff-h);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.4;
}
.d-arr {
  font-size: 1.3rem;
  color: var(--red);
  font-weight: 700;
  flex-shrink: 0;
}

.fund-pts {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1.8rem;
}
.fund-pt {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.84rem;
  color: var(--mid);
  line-height: 1.55;
}
.pt-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  flex-shrink: 0;
  margin-top: 0.3rem;
}

#cta {
  padding: 5.5rem 0;
  background: linear-gradient(135deg, var(--red) 0%, #8b0000 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
#cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 30 L30 0 L60 30 L30 60 Z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E")
    repeat;
}
.cta-inner {
  position: relative;
  z-index: 1;
}
.cta-tag {
  font-family: var(--ff-h);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 1rem;
}
.cta-h2 {
  font-family: var(--ff-d);
  font-weight: 600;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  color: white;
  line-height: 1.05;
  margin-bottom: 1.2rem;
}
.cta-sub {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}
.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* ≤ 1200px */
@media (max-width: 1200px) {
  .app-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ≤ 1024px */
@media (max-width: 1024px) {
  .ov-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .ov-badge {
    top: auto;
    bottom: -1rem;
    right: 1rem;
  }
  .var-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .spec-panel.active {
    grid-template-columns: 1fr;
  }
  .con-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .how-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .fund-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ≤ 768px */
@media (max-width: 768px) {
  .ov-hls {
    grid-template-columns: 1fr;
  }
  .ov-badge {
    position: static;
    display: inline-block;
    margin-top: 1rem;
  }
  .var-grid {
    grid-template-columns: 1fr;
  }
  .spec-tabs {
    flex-direction: column;
  }
  .spec-tab {
    width: 100%;
    text-align: left;
  }
  .tbl-head,
  .trow {
    grid-template-columns: 1fr;
  }
  .app-grid {
    grid-template-columns: 1fr 1fr;
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .diag {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
  }
  .d-arr {
    display: none;
  }
  .d-side {
    width: 45%;
  }
  .d-core {
    width: 100%;
    order: -1;
  }
  .fund-facts {
    grid-template-columns: 1fr 1fr;
  }
  .key-facts {
    grid-template-columns: 1fr 1fr;
  }
}

/* ≤ 480px */
@media (max-width: 480px) {
  #overview,
  #stats,
  #variants,
  #specs,
  #construction,
  #applications,
  #why,
  #how-it-works,
  #power-fundamentals {
    padding: 4rem 0;
  }

  .con-grid {
    grid-template-columns: 1fr;
  }
  .app-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .fund-facts {
    grid-template-columns: 1fr 1fr;
  }
  .var-header,
  .con-header,
  .app-header,
  .why-header,
  .specs-hdr {
    margin-bottom: 2.5rem;
  }
}