(version 1)

# The edge-launch SMA copper must reach the routed board edge by construction.
(rule "J2 edge-launch lands"
    (condition "A.Reference == 'J2' || B.Reference == 'J2'")
    (constraint edge_clearance (min -0.01mm)))

# The manufacturer USB-C locating holes are 0.194 mm from grounded shell
# lands.  This exception is internal to the qualified connector footprint.
(rule "USB-C locating-hole clearance"
    (condition "A.Reference == 'J1' && B.Reference == 'J1'")
    (constraint hole_clearance (min 0.19mm)))

# RZV0024A is an ultra-dense high-current package.  Its adjusted corner lands
# and thermal zones meet the selected JLCPCB 0.10-mm copper rule.
(rule "TPS6287B RZV internal clearance"
    (condition "A.Reference == 'U13' && B.Reference == 'U13'")
    (constraint clearance (min 0.10mm)))

# Inside the Ti375 escape field the 0.8-mm ball pitch fixes the geometry: a
# 0.45-mm dogbone via between four lands leaves 0.1407 mm, and a 0.12-mm trace
# threading between two lands leaves 0.14 mm only if it stays exactly centred.
# This field therefore runs at the fabricator's 0.10-mm copper minimum, which
# is what the Default class uses across the rest of the board anyway.  The rule
# only fires when one of the two objects belongs to U1, so it relaxes copper
# against the balls and nothing else: two tracks crossing the field still owe
# each other their own net classes' clearance, CLOCK's 0.15 mm included.
(rule "Ti375 0.8-mm BGA escape clearance"
    (condition "A.Reference == 'U1' || B.Reference == 'U1'")
    (constraint clearance (min 0.10mm)))

# JLC08161H-3313 L1/L2 geometry.  Net-class widths are routing defaults only;
# these rules make the controlled-impedance geometries actual DRC limits.
(rule "GNSS 50-ohm CPWG geometry"
    (condition "A.NetClass == 'RF50_CPWG'")
    (constraint track_width (min 0.164mm) (opt 0.164mm) (max 0.164mm)))

(rule "GNSS RF stays on top layer"
    (condition "A.NetClass == 'RF50_CPWG' && A.Type == 'Track' && A.Layer != 'F.Cu'")
    (constraint disallow track))

(rule "USB2 90-ohm differential geometry"
    (condition "A.NetClass == 'USB90_DIFF'")
    (constraint track_width (min 0.135mm) (opt 0.135mm) (max 0.135mm)))

# The TPD2EUSB30A clamp is a SOT-23 whose ground pad sits between its two
# channel pads, so the pair has to open up for about 1.5 mm to pass it.  The
# 0.90-mm coupled limit still applies over the whole rest of the run.
(rule "USB2 coupled gap"
    (condition "A.NetClass == 'USB90_DIFF' && AB.isCoupledDiffPair() && !A.intersectsArea('USB_ESD_BREAKOUT')")
    (constraint diff_pair_gap (min 0.15mm) (opt 0.15mm) (max 0.90mm)))

# The GPS front end owns its region on every layer under F.Cu, so no digital
# route can run beneath or immediately beside the 50-ohm line and no return
# path there is broken.  Ground stitching and the MAX2771's own supply drops
# still have to reach it, so the disallow is scoped to the signal classes
# rather than made a plain keepout.  The RF line itself is on F.Cu, which the
# area does not cover, and L2/L7 stay solid because nothing routes on them.
(rule "No digital copper under the GNSS front end"
    (condition "A.intersectsArea('RF_NO_DIGITAL') && A.NetClass != 'POWER'")
    (constraint disallow track via))

(rule "Clock trunk width outside Ti375 escape"
    (condition "A.NetClass == 'CLOCK' && A.Type == 'Track' && !A.insideCourtyard('U1')")
    (constraint track_width (min 0.15mm)))