.otx-section{padding:clamp(48px,6vw,78px) 0;color:#172f4b;background:#fff}
.otx-section--light{background:#f6f8fa}
.otx-section--navy{background:linear-gradient(130deg,#081e38,#153b60);color:#fff}
.otx-section *, .otx-section *:before,.otx-section *:after{box-sizing:border-box}
.otx-heading{max-width:1000px;margin-bottom:31px}
.otx-kicker{font-size:12px;letter-spacing:.14em;color:#a67a3d;font-weight:850;display:block;margin-bottom:12px}
.otx-heading h2{font-size:clamp(28px,3vw,43px);line-height:1.2;font-weight:800;color:#122b46;margin:0 0 14px;letter-spacing:-.02em}
.otx-heading p{color:#52677b;line-height:1.75;font-size:16px;max-width:950px}
.otx-section--navy .otx-kicker{color:#e0c282}.otx-section--navy .otx-heading h2{color:#fff}.otx-section--navy .otx-heading p{color:#d5e3ed}
.otx-calc{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.65fr);gap:24px;align-items:stretch}
.otx-calc__form{background:#f9fafb;border:1px solid #e4e8ee;border-radius:20px;padding:30px}
.otx-fieldset,.otx-role fieldset{border:0;margin:0;padding:0}
.otx-fieldset legend,.otx-calc__controls strong{font-weight:800;font-size:19px;color:#1e3652;margin-bottom:18px}
.otx-checks{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.otx-checks label{display:flex;gap:12px;align-items:center;padding:17px;background:white;border:1px solid #e0e6ed;border-radius:12px;cursor:pointer}
.otx-checks label:has(input:checked){border-color:#ba955a;background:#fff9ed;box-shadow:0 3px 14px #a4874e17}
.otx-checks input{accent-color:#a87931;width:18px;height:18px;flex-shrink:0}
.otx-checks b,.otx-checks small{display:block}.otx-checks b{font-size:15px;color:#193653}.otx-checks small{font-size:12px;color:#65768a;margin-top:3px;line-height:1.4}
.otx-calc__controls{display:flex;gap:20px;justify-content:space-between;align-items:center;border-top:1px solid #e2e8ee;margin-top:25px;padding-top:24px}
.otx-calc__controls strong{display:block;margin:0 0 5px}.otx-calc__controls small{font-size:12px;color:#65788c}
.otx-calc__controls input{width:128px;border:1px solid #bdcad8;border-radius:9px;background:white;padding:13px 15px;font-size:20px;font-weight:750;color:#143757}
.otx-discounts{margin-top:24px;font-size:13px;color:#536a81}.otx-discounts summary{cursor:pointer;font-weight:800;color:#8c682c}.otx-discounts p{line-height:1.65;margin:12px 0}
.otx-calc__result{background:linear-gradient(158deg,#112d4a,#092038);color:#fff;border-radius:20px;padding:30px;border:1px solid #2e5172}
.otx-result__eyebrow{font-size:11px;letter-spacing:.12em;color:#e6c789;font-weight:800;display:block;margin-bottom:26px}
.otx-result__metric,.otx-result__per{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #ffffff26;font-size:14px;color:#cadce9}
.otx-result__metric strong,.otx-result__per b{font-size:15px;color:#fff}
.otx-result__total{padding:23px 0 8px}.otx-result__total span{display:block;color:#d7e3ed;font-size:13px;margin-bottom:8px}
.otx-result__total strong{color:#f1d698;font-size:clamp(28px,3vw,38px);line-height:1.2}
.otx-button{cursor:pointer;border:0;display:inline-flex;align-items:center;justify-content:center;text-align:center;min-height:49px;padding:13px 20px;border-radius:10px;font-weight:800;font-size:14px;text-decoration:none}
.otx-button--gold{background:linear-gradient(115deg,#f1db9b,#caa15d);color:#182d40}
.otx-button--navy{background:#123657;color:white}
.otx-button:disabled{opacity:.45;cursor:not-allowed}
.otx-calc__result>.otx-button{width:100%;margin-top:23px}
.otx-result__note{font-size:12px;color:#b5cad9;line-height:1.6;margin:16px 0 0}
.otx-role{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.otx-role__inputs,.otx-role__output{background:white;border:1px solid #e0e5eb;border-radius:17px;padding:28px}
.otx-role__inputs>label{display:block;font-weight:800;color:#1b3855;margin-bottom:12px}
.otx-role select{width:100%;border:1px solid #c6d3df;padding:13px;background:white;border-radius:9px;color:#153450;font-size:15px}
.otx-role fieldset{margin-top:23px}.otx-role legend{font-size:15px;font-weight:800;margin-bottom:13px}
.otx-role fieldset label{display:block;line-height:1.5;margin:13px 0;cursor:pointer;font-size:14px;color:#2b4864}
.otx-role input[type=checkbox]{accent-color:#a27e43;margin-right:9px}
.otx-role__output{background:#122f4e;color:white;border-color:#173d61;display:flex;flex-direction:column;justify-content:center}
.otx-role__output h3{font-size:25px;line-height:1.24;color:#fff;margin:0 0 14px}
.otx-role__output>div{font-size:16px;line-height:1.7;color:#f2f0e8;margin-bottom:20px}
.otx-role__output>p{font-size:12px;color:#c0d2e0;line-height:1.65;margin:17px 0 0}
.otx-role__output>.otx-button{align-self:flex-start;background:#e7cb93;color:#17304a}
.otx-registry{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.otx-registry article{border:1px solid #e5e9ed;border-radius:17px;padding:28px;box-shadow:0 9px 26px #1329430b}
.otx-registry__n{font-size:13px;color:#ae8242;font-weight:800}
.otx-registry h3{font-size:24px;color:#1a3653;margin:14px 0}
.otx-registry p,.otx-registry li{line-height:1.7;font-size:14px;color:#50657b}
.otx-registry ol{padding-left:22px}.otx-registry li{margin-bottom:9px}
.otx-registry__links{display:flex;flex-wrap:wrap;gap:13px;margin-top:21px}
.otx-registry__links a,.otx-lawfoot a{color:#916c36;font-weight:800;font-size:14px;text-decoration:underline;text-underline-offset:4px}
.otx-fineprint{color:#5e7285;font-size:13px;line-height:1.6;margin:19px 0 0}
.otx-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.otx-rules article{background:white;border:1px solid #e1e7ec;border-radius:15px;padding:25px}
.otx-rules article>span{font-size:11px;color:#987544;letter-spacing:.08em;font-weight:850}
.otx-rules h3{color:#18344f;font-weight:790;font-size:20px;margin:14px 0}
.otx-rules p{font-size:14px;color:#526579;line-height:1.7}
.otx-lawfoot{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px}
.otx-business{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}
.otx-business article{padding:23px;border-radius:14px;background:#ffffff0a;border:1px solid #ffffff30}
.otx-business b{font-size:26px;color:#e5c989}
.otx-business h3{font-size:19px;color:white;margin:12px 0}
.otx-business p{font-size:14px;color:#d0dfeb;line-height:1.65}
.otx-business__cta{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:26px;border-top:1px solid #ffffff40;padding-top:23px}
.otx-business__cta p{color:#dce5ee;line-height:1.6;margin:0;max-width:680px}.otx-business__cta strong{color:white}
@media(max-width:1020px){.otx-rules,.otx-business{grid-template-columns:repeat(2,minmax(0,1fr))}.otx-calc{grid-template-columns:1fr minmax(260px,.65fr)}}
@media(max-width:800px){.otx-calc,.otx-role,.otx-registry{grid-template-columns:1fr}.otx-calc__result{max-width:none}.otx-heading h2{font-size:30px}}
@media(max-width:560px){.otx-section{padding:41px 0}.otx-checks,.otx-rules,.otx-business{grid-template-columns:1fr}.otx-calc__form,.otx-calc__result,.otx-role__inputs,.otx-role__output,.otx-registry article{padding:20px}.otx-calc__controls{align-items:flex-start}.otx-calc__controls input{width:95px}.otx-business__cta{display:block}.otx-business__cta button{width:100%;margin-top:20px}}

.otx-discount-detail{font-size:12px;color:#cadce9;line-height:1.55;margin:13px 0 0}


/* Verified Orenburg customers of IIT; only OT catalog and OT program templates */
.otx-section--clients{background:#fbfcfd}
.otx-section--clients .otx-heading{max-width:1020px}
.otx-section--clients .otx-heading p{max-width:900px}
.otx-clients{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:stretch}
.otx-clients__card{position:relative;display:flex;flex-direction:column;min-height:225px;border:1px solid #e2e8ef;border-radius:17px;background:#fff;padding:26px 25px 23px;box-shadow:0 12px 36px rgba(9,32,57,.055);overflow:hidden}
.otx-clients__card:before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,#aa8347,#ecd4a0)}
.otx-clients__number{font-size:11px;letter-spacing:.11em;font-weight:820;color:#986f35}
.otx-clients__card h3{font-size:20px;line-height:1.32;font-weight:790;color:#14314f;margin:15px 0 17px;overflow-wrap:anywhere}
.otx-clients__key{font-size:11px!important;text-transform:uppercase;letter-spacing:.085em;font-weight:800;color:#738397!important;margin:0 0 6px!important}
.otx-clients__card address{font-style:normal;line-height:1.65;color:#3d536a;font-size:14px;margin-bottom:12px}
.otx-clients__tax{color:#8996a3;font-size:12px;margin-top:auto;padding-top:9px;border-top:1px solid #edf0f3}
.otx-clients__disclaimer{font-size:12px;line-height:1.7;color:#5c7185;margin:24px 0 0;max-width:1100px}
.otx-clients__footer{border-top:1px solid #e4e9ee;margin-top:22px;padding-top:22px;display:flex;justify-content:space-between;align-items:center;gap:22px}
.otx-clients__more{color:#8e6b34;font-weight:800;text-decoration:none;font-size:14px}
.otx-clients__more:hover{color:#60471f;text-decoration:underline}
.otx-clients__footer .otx-button{flex-shrink:0}
@media(max-width:1020px){.otx-clients{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.otx-clients{grid-template-columns:1fr;gap:14px}.otx-clients__card{min-height:0;padding:23px}.otx-clients__footer{flex-direction:column;align-items:stretch}.otx-clients__footer .otx-button{width:100%}}

/* 2026-11-12: prominent, accessible B2B contact in the shared corporate banner */
.corporate .corporate__email{display:flex;align-items:center;gap:13px;background:#edf5ff;border:1px solid #c7daf3;border-radius:14px;padding:13px 14px;margin:6px 0 8px;min-width:0}
.corporate .corporate__email-icon{width:44px;height:44px;flex:0 0 44px}
.corporate .corporate__email-text{min-width:0;gap:5px}
.corporate .corporate__email-label{font-size:13px;line-height:1.35;font-weight:650;color:#2c4b6c}
.corporate .corporate__email-addr{display:inline-block;max-width:100%;font-size:clamp(19px,2vw,23px);line-height:1.3;font-weight:800;letter-spacing:-.015em;color:#0756b9;text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}
.corporate .corporate__email-addr:hover{color:#03377d}
.corporate .corporate__email-addr:focus-visible{outline:3px solid #e4ad39;outline-offset:3px;border-radius:4px}
@media(max-width:560px){.corporate .corporate__email{gap:10px;padding:12px}.corporate .corporate__email-label{font-size:12px}.corporate .corporate__email-addr{font-size:19px}.corporate .corporate__email-icon{width:38px;height:38px;flex-basis:38px}}