:root{
  --wood-900:#0f1729; --wood-700:#1f2937; --wood-500:#6366f1; --wood-300:#818cf8;
  --accent:#4f46e5; --accent-700:#4338ca;
  --bg:#f9fafb; --panel:#ffffff; --ink:#111827; --muted:#6b7280;
  --line:#e5e7eb; --ok:#15803d; --ok-bg:#ecfdf3; --no:#b91c1c; --no-bg:#fef2f2;
  --warn:#92600a; --warn-bg:#fffbeb;
  --shadow:0 1px 3px rgba(15,23,42,.08),0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}

/* top bar */
.topbar{display:flex;align-items:center;gap:2rem;padding:0 1.5rem;height:60px;background:var(--wood-900);
  position:sticky;top:0;z-index:20;box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:.6rem;color:#fff}
.brand-mark{display:block;width:36px;height:36px;flex:0 0 36px}
.brand-mark svg{width:100%;height:100%;display:block;border-radius:10px;
  box-shadow:0 3px 10px rgba(67,56,202,.45)}
.brand:hover .brand-mark svg{box-shadow:0 4px 14px rgba(99,102,241,.6)}
.brand-text{font-weight:700;letter-spacing:.2px;line-height:1.1}
.brand-text small{display:block;font-weight:400;font-size:.7rem;color:var(--wood-300);letter-spacing:.5px}
.topnav{display:flex;gap:.25rem;flex-wrap:wrap}
.topnav a{color:#cbd5e1;padding:.45rem .8rem;border-radius:7px;font-size:.92rem;font-weight:500}
.topnav a:hover{background:rgba(255,255,255,.08);color:#fff}
.topnav a.active{background:var(--accent);color:#fff}
.topnav .nav-top{color:#cbd5e1;padding:.45rem .8rem;border-radius:7px;font-size:.92rem;font-weight:600;display:inline-block}
.topnav .nav-top:hover{background:rgba(255,255,255,.08);color:#fff}
.topnav .nav-top.active{background:var(--accent);color:#fff}
.nav-group{position:relative}
.nav-drop{position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:var(--shadow);padding:.4rem;min-width:200px;display:none;flex-direction:column;gap:.1rem;z-index:50}
.nav-group:hover .nav-drop{display:flex}
.nav-drop a{color:var(--ink);padding:.45rem .7rem;border-radius:6px;font-size:.9rem;font-weight:500}
.nav-drop a:hover{background:#f3f4f6;color:var(--wood-900)}
.nav-drop a.active{background:var(--accent);color:#fff}

/* two-section landing */
.section-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.4rem;margin:2rem 0}
.section-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:1.6rem 1.7rem;
  display:flex;flex-direction:column;transition:transform .12s,box-shadow .12s;box-shadow:var(--shadow);position:relative}
.beta-badge{position:absolute;top:12px;right:12px;background:var(--accent);color:#fff;font-size:.62rem;
  font-weight:800;letter-spacing:.09em;text-transform:uppercase;padding:.2rem .5rem;border-radius:999px;
  box-shadow:0 2px 6px rgba(15,23,42,.22)}
.section-card:hover{transform:translateY(-3px);box-shadow:0 12px 34px rgba(15,23,42,.14)}
.section-card.feature{border-color:var(--accent);background:linear-gradient(180deg,#fff,#eef2ff)}
.section-card h2{margin:.9rem 0 .4rem;color:var(--wood-900)}
.section-card>p{color:var(--muted);margin:0 0 1rem}
.section-list{list-style:none;padding:0;margin:0 0 1.2rem;flex:1}
.section-list li{padding:.3rem 0 .3rem 1.4rem;position:relative;font-size:.92rem;color:var(--ink)}
.section-list li:before{content:"";position:absolute;left:.2rem;top:.7rem;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.section-card .go{color:var(--accent);font-weight:700}
.section-icon{width:54px;height:54px;border-radius:12px;display:grid;place-items:center}
.icon-calc{background:linear-gradient(135deg,#1f2937,#4f46e5)}
.icon-project{background:linear-gradient(135deg,#4338ca,#818cf8)}

.container{max-width:1080px;margin:0 auto;padding:2rem 1.5rem 4rem}

/* hero / landing */
.hero{text-align:center;padding:2.5rem 0 1.5rem}
.hero h1{font-size:2.6rem;margin:0 0 .5rem;color:var(--wood-900)}
.hero p{font-size:1.15rem;color:var(--muted);max-width:640px;margin:0 auto}
.edition-pill{display:inline-block;margin-top:1.2rem;padding:.4rem 1rem;border:1px solid var(--line);
  border-radius:999px;background:var(--panel);font-size:.9rem;color:var(--wood-700)}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.2rem;margin-top:2rem}
.module-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:1.4rem;
  box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s;display:flex;flex-direction:column}
.module-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(15,23,42,.12)}
.module-card h3{margin:.8rem 0 .3rem;color:var(--wood-900)}
.module-card p{color:var(--muted);font-size:.92rem;margin:0 0 1rem;flex:1}
.module-card .go{color:var(--accent);font-weight:600;font-size:.9rem}
.module-icon{width:46px;height:46px;border-radius:10px;background:var(--wood-700);
  -webkit-mask-size:contain;mask-size:contain}

/* --- Public home: free-tier cards + premium band ------------------------- */
.home-free-grid .module-card{position:relative}
.free-badge{position:absolute;top:12px;right:12px;background:var(--ok-bg);color:var(--ok);
  font-size:.62rem;font-weight:800;letter-spacing:.6px;text-transform:uppercase;
  padding:.2rem .5rem;border-radius:999px;border:1px solid #86efac}
.module-card-soon{opacity:.7;border-style:dashed;box-shadow:none}
.module-card-soon:hover{transform:none;box-shadow:none}
.module-card-soon .icon-soon{display:grid;place-items:center;color:#fff;font-size:1.7rem;
  font-weight:800;line-height:1;background:linear-gradient(135deg,#9ca3af,#c7d2fe)}
.go-muted{color:var(--muted)!important}
.premium-band{margin:3.4rem 0 1rem;padding:2.6rem 1.8rem;border-radius:20px;
  background:linear-gradient(135deg,var(--wood-900),#233056 58%,var(--accent-700));
  color:#e6ebfb;box-shadow:0 22px 54px rgba(15,23,42,.3);text-align:center}
.premium-inner{max-width:780px;margin:0 auto}
.premium-band .kicker{color:#a5b4fc}
.premium-band h2{color:#fff;font-size:1.95rem;margin:.3rem 0 .6rem}
.premium-sub{color:#c3cbe8;font-size:1rem;line-height:1.55;margin:0 auto 1.5rem;max-width:660px}
.premium-chips{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-bottom:1.7rem}
.pchip{font-size:.8rem;padding:.34rem .72rem;border-radius:999px;color:#dfe5fb;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
.premium-btn{display:inline-flex;align-items:center;gap:.55rem;padding:.9rem 1.8rem;border-radius:12px;
  font-size:1.04rem;font-weight:700;color:#fff;text-decoration:none;
  background:linear-gradient(135deg,#4f46e5,#6366f1);box-shadow:0 12px 28px rgba(79,70,229,.5);
  transition:transform .12s,filter .12s}
.premium-btn:hover{transform:translateY(-2px);filter:brightness(1.08)}
.premium-lock{font-size:1rem}
.premium-foot{margin:1.25rem 0 0;font-size:.85rem;color:#aab3d4}
.premium-foot a{color:#c7d2fe}

/* ======================= Modern home (redesign) ======================= */
.home2{margin:-2rem -1.5rem -4rem}          /* break out of .container padding */

/* --- Hero --- */
.hx{position:relative;width:100vw;margin-left:calc(50% - 50vw);overflow:hidden;text-align:center;
  color:#e9edfb;padding:clamp(4rem,12vh,8.5rem) 1.5rem clamp(3.5rem,9vh,6.5rem);
  background:linear-gradient(180deg,#0b1226 0%,#0f1729 55%,#141c37 100%)}
.hx-bg{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(129,140,248,.10) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(129,140,248,.10) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 8%,#000 0%,transparent 62%);
  mask-image:radial-gradient(120% 90% at 50% 8%,#000 0%,transparent 62%)}
.hx-glow{position:absolute;left:50%;top:-24%;width:900px;height:620px;transform:translateX(-50%);
  pointer-events:none;border-radius:50%;filter:blur(20px);
  background:radial-gradient(closest-side,rgba(99,102,241,.42),rgba(79,70,229,.16) 55%,transparent 72%)}
.hx-inner{position:relative;max-width:830px;margin:0 auto}
.hx-eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.78rem;font-weight:600;
  letter-spacing:.2px;color:#cdd4fb;background:rgba(129,140,248,.12);border:1px solid rgba(129,140,248,.28);
  padding:.42rem .9rem;border-radius:999px;margin-bottom:1.7rem}
.hx-dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 0 3px rgba(52,211,153,.25)}
.hx-title{margin:0 0 1.1rem;font-weight:800;letter-spacing:-1.6px;color:#fff;
  font-size:clamp(2.35rem,5.6vw,4.15rem);line-height:1.04}
.hx-grad{background:linear-gradient(105deg,#8b93ff 0%,#c4b5fd 52%,#67e8f9 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hx-sub{max-width:640px;margin:0 auto 2.1rem;color:#aab3d6;line-height:1.62;
  font-size:clamp(1.02rem,1.55vw,1.24rem)}
.hx-sub strong{color:#eef1fc;font-weight:700}
.hx-cta{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.btn2{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.6rem;border-radius:12px;
  font-weight:700;font-size:1.02rem;line-height:1;transition:transform .14s,box-shadow .14s,background .14s,filter .14s}
.btn2-primary{color:#fff;background:linear-gradient(135deg,#5b52f0,#6d6bf5);box-shadow:0 14px 32px rgba(79,70,229,.5)}
.btn2-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn2-ghost{color:#e2e6f8;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.2)}
.btn2-ghost:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
.hx-trust{margin-top:1.9rem;display:inline-flex;gap:.85rem;align-items:center;flex-wrap:wrap;
  justify-content:center;font-size:.85rem;color:#7d87b2}
.hx-trust b{width:4px;height:4px;border-radius:50%;background:#3c476e;display:inline-block}

/* --- Section header --- */
.sec-head{text-align:center;margin-bottom:2.4rem}
.sec-kicker{display:inline-block;font-size:.74rem;font-weight:700;text-transform:uppercase;
  letter-spacing:1.3px;color:var(--accent);margin-bottom:.55rem}
.sec-title{margin:.1rem 0 .55rem;color:var(--wood-900);letter-spacing:-.7px;
  font-size:clamp(1.7rem,3.1vw,2.35rem)}
.sec-lead{max-width:540px;margin:0 auto;color:var(--muted);font-size:1.04rem}

/* --- Free tool cards --- */
.freewrap{max-width:1080px;margin:0 auto;padding:clamp(3rem,7vh,5rem) 1.5rem 1rem}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:1.2rem}
.tool-card{position:relative;display:flex;flex-direction:column;text-decoration:none;
  background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:1.7rem 1.55rem;
  box-shadow:0 1px 2px rgba(15,23,42,.05);transition:transform .16s,box-shadow .16s,border-color .16s}
.tool-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(20,26,54,.15);border-color:#c8ccf6}
.tool-badge{position:absolute;top:1.15rem;right:1.15rem;font-size:.62rem;font-weight:800;letter-spacing:.6px;
  text-transform:uppercase;color:#0f7a43;background:#e7f9ef;border:1px solid #a7e9c5;
  padding:.22rem .52rem;border-radius:999px}
.tool-ic{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;margin-bottom:1.15rem;
  color:#fff;background:linear-gradient(135deg,#4338ca,#7c83f6);
  box-shadow:0 8px 20px rgba(67,56,202,.35)}
.tool-ic svg{width:30px;height:30px}
.ic-soon{background:linear-gradient(135deg,#9aa1b8,#c9cdea);box-shadow:none;
  font-size:1.9rem;font-weight:800;line-height:1}
.tool-card h3{margin:0 0 .45rem;font-size:1.22rem;color:var(--wood-900)}
.tool-card p{margin:0 0 1.35rem;color:var(--muted);font-size:.92rem;line-height:1.55;flex:1}
.tool-go{display:inline-flex;align-items:center;gap:.4rem;color:var(--accent);font-weight:700;font-size:.92rem}
.tool-go i{font-style:normal;transition:transform .16s}
.tool-card:hover .tool-go i{transform:translateX(5px)}
.tool-go.muted{color:var(--muted)}
.tool-soon{border-style:dashed;background:#fbfbfe;box-shadow:none}
.tool-soon:hover{transform:none;box-shadow:none;border-color:var(--line)}

/* --- Premium band --- */
.prem2{max-width:1080px;margin:2.6rem auto 0;padding:0 1.5rem}
.prem2-inner{position:relative;overflow:hidden;border-radius:26px;text-align:center;color:#e9edfb;
  padding:clamp(2.6rem,5.5vw,3.8rem) 1.8rem;
  background:linear-gradient(140deg,#0f1729 0%,#1b2247 52%,#312e81 100%);
  box-shadow:0 26px 64px rgba(15,23,42,.32)}
.prem2-glow{position:absolute;left:50%;top:-40%;width:640px;height:420px;transform:translateX(-50%);
  pointer-events:none;border-radius:50%;filter:blur(18px);
  background:radial-gradient(closest-side,rgba(129,140,248,.4),transparent 70%)}
.prem2-inner>*{position:relative}
.prem2-kick{color:#a5b4fc}
.prem2-title{margin:.3rem 0 .6rem;color:#fff;font-size:clamp(1.7rem,3.2vw,2.2rem);letter-spacing:-.6px}
.prem2-sub{max-width:660px;margin:0 auto 1.7rem;color:#c1c9ea;font-size:1.01rem;line-height:1.58}
.prem2-chips{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-bottom:1.8rem}
.prem2-chips span{font-size:.8rem;padding:.36rem .74rem;border-radius:999px;color:#dfe4fb;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
.btn2-premium{color:#fff;background:linear-gradient(135deg,#5b52f0,#6d6bf5);
  box-shadow:0 14px 32px rgba(79,70,229,.55)}
.btn2-premium:hover{transform:translateY(-2px);filter:brightness(1.07)}
.prem2-lock{font-size:.98rem}
.prem2-foot{margin:1.3rem 0 0;font-size:.85rem;color:#a7b0d4}
.prem2-foot a{color:#c7d2fe}

@media (max-width:560px){
  .hx-cta .btn2{width:100%;justify-content:center}
}

/* ========================= Wood-themed home ========================= */
.woodhome{margin:-2rem -1.5rem -4rem;
  --cream:#f7f1e7; --paper:#fffdf8; --espresso:#33271b; --bark:#4a3524;
  --oak:#a9793f; --honey:#c68a3e; --amber:#b9702f; --line:#e9ddc9; --muted:#8a785f}

/* --- hero --- */
.wh-hero{position:relative;width:100vw;margin-left:calc(50% - 50vw);overflow:hidden;
  padding:clamp(3.2rem,8vh,6.5rem) 1.5rem clamp(3rem,7vh,5.5rem);
  background:radial-gradient(1100px 520px at 80% 6%,#fbeed6 0%,transparent 58%),
             linear-gradient(180deg,#fbf6ee 0%,#f4ead9 100%)}
.wh-hero:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:#eaddc8}
.wh-hero-inner{position:relative;max-width:1120px;margin:0 auto;display:grid;
  grid-template-columns:1.04fr .96fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.wh-copy{max-width:560px}
.wh-eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.78rem;font-weight:600;
  color:#7a5a2c;background:rgba(198,138,62,.12);border:1px solid rgba(198,138,62,.3);
  padding:.42rem .9rem;border-radius:999px;margin-bottom:1.5rem}
.wh-dot{width:7px;height:7px;border-radius:50%;background:#4f9d5b;box-shadow:0 0 0 3px rgba(79,157,91,.22)}
.wh-title{margin:0 0 1.05rem;font-weight:800;letter-spacing:-1.2px;color:var(--espresso);
  font-size:clamp(2.25rem,4.4vw,3.5rem);line-height:1.06}
.wh-mark{position:relative;color:var(--amber);white-space:nowrap}
.wh-mark:after{content:"";position:absolute;left:.02em;right:.02em;bottom:.02em;height:.15em;border-radius:3px;
  background:linear-gradient(90deg,#e6b877,#c68a3e)}
.wh-sub{max-width:520px;margin:0 0 1.9rem;color:#6a5a45;line-height:1.62;font-size:clamp(1rem,1.4vw,1.15rem)}
.wh-sub strong{color:var(--bark);font-weight:700}
.wh-cta{display:flex;gap:.75rem;flex-wrap:wrap}
.whb{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.5rem;border-radius:12px;
  font-weight:700;font-size:1rem;line-height:1;transition:transform .14s,box-shadow .14s,filter .14s,background .14s}
.whb-primary{color:#fff;background:linear-gradient(135deg,#c68a3e,#a9793f);box-shadow:0 12px 26px rgba(150,100,40,.35)}
.whb-primary:hover{transform:translateY(-2px);filter:brightness(1.05)}
.whb-ghost{color:#5a4429;background:#fff;border:1px solid #e3d4bb}
.whb-ghost:hover{background:#fffaf1;transform:translateY(-2px)}
.wh-trust{margin-top:1.7rem;display:flex;gap:.8rem;align-items:center;flex-wrap:wrap;font-size:.84rem;color:#9a866a}
.wh-trust b{width:4px;height:4px;border-radius:50%;background:#d3bd98;display:inline-block}

/* --- hero art (timber frame) --- */
.wh-art{position:relative;border-radius:24px;padding:1.6rem 1.8rem 1.2rem;
  background:linear-gradient(160deg,#f3e7d1,#ecdabc);border:1px solid #e7d5b8;overflow:hidden;
  box-shadow:0 22px 48px rgba(120,84,38,.16),inset 0 1px 0 rgba(255,255,255,.5)}
.wh-art-grain{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:repeating-linear-gradient(92deg,rgba(150,105,50,.05) 0 2px,transparent 2px 9px)}
.wh-frame{position:relative;width:100%;height:auto;display:block}

/* --- free tools --- */
.wh-free{max-width:1120px;margin:0 auto;padding:clamp(3rem,7vh,5rem) 1.5rem 1rem}
.wh-head{text-align:center;margin-bottom:2.4rem}
.wh-kicker{display:inline-block;font-size:.74rem;font-weight:700;text-transform:uppercase;
  letter-spacing:1.3px;color:var(--honey);margin-bottom:.55rem}
.wh-h2{margin:.1rem 0 .5rem;color:var(--espresso);letter-spacing:-.6px;font-size:clamp(1.7rem,3vw,2.3rem)}
.wh-lead{max-width:520px;margin:0 auto;color:var(--muted);font-size:1.03rem}
.wh-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:1.2rem}
.wh-card{position:relative;display:flex;flex-direction:column;text-decoration:none;background:var(--paper);
  border:1px solid var(--line);border-radius:18px;padding:1.7rem 1.55rem;
  box-shadow:0 1px 2px rgba(120,84,38,.05);transition:transform .16s,box-shadow .16s,border-color .16s}
.wh-card:hover{transform:translateY(-5px);box-shadow:0 20px 40px rgba(120,84,38,.16);border-color:#e0c99f}
.wh-badge{position:absolute;top:1.15rem;right:1.15rem;font-size:.62rem;font-weight:800;letter-spacing:.6px;
  text-transform:uppercase;color:#3f7a4a;background:#eaf5ea;border:1px solid #b9e0be;padding:.22rem .52rem;border-radius:999px}
.wh-ic{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;margin-bottom:1.15rem;
  color:#fff;background:linear-gradient(135deg,#c68a3e,#9c6a2f);box-shadow:0 8px 18px rgba(150,100,40,.3)}
.wh-ic svg{width:30px;height:30px}
.wh-ic-soon{background:linear-gradient(135deg,#cbb591,#e4d6bd);box-shadow:none;font-size:1.9rem;font-weight:800;line-height:1;color:#8a6a3f}
.wh-card h3{margin:0 0 .45rem;font-size:1.22rem;color:var(--espresso)}
.wh-card p{margin:0 0 1.35rem;color:#6f5f48;font-size:.92rem;line-height:1.55;flex:1}
.wh-go{display:inline-flex;align-items:center;gap:.4rem;color:var(--amber);font-weight:700;font-size:.92rem}
.wh-go i{font-style:normal;transition:transform .16s}
.wh-card:hover .wh-go i{transform:translateX(5px)}
.wh-go.muted{color:var(--muted)}
.wh-soon{border-style:dashed;background:#fbf6ec;box-shadow:none}
.wh-soon:hover{transform:none;box-shadow:none;border-color:var(--line)}

/* --- premium (dark walnut) --- */
.wh-prem{max-width:1120px;margin:2.6rem auto 0;padding:0 1.5rem}
.wh-prem-inner{position:relative;overflow:hidden;border-radius:26px;text-align:center;color:#f2e6d2;
  padding:clamp(2.6rem,5.5vw,3.8rem) 1.8rem;
  background:linear-gradient(150deg,#3a2a1b 0%,#4a3524 52%,#2b1f14 100%);
  box-shadow:0 26px 60px rgba(58,40,22,.4)}
.wh-prem-grain{position:absolute;inset:0;pointer-events:none;opacity:.4;
  background-image:repeating-linear-gradient(90deg,rgba(210,160,90,.06) 0 2px,transparent 2px 11px)}
.wh-prem-inner>*{position:relative}
.wh-kicker-dark{color:#e0b06a}
.wh-prem-title{margin:.3rem 0 .6rem;color:#fbf2e2;font-size:clamp(1.7rem,3.2vw,2.2rem);letter-spacing:-.5px}
.wh-prem-sub{max-width:660px;margin:0 auto 1.7rem;color:#d8c7ad;font-size:1.01rem;line-height:1.58}
.wh-chips{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-bottom:1.8rem}
.wh-chips span{font-size:.8rem;padding:.36rem .74rem;border-radius:999px;color:#ecdcc2;
  background:rgba(230,180,110,.1);border:1px solid rgba(230,180,110,.22)}
.whb-amber{color:#3a2a16;background:linear-gradient(135deg,#e6b877,#d1963f);box-shadow:0 14px 30px rgba(210,150,60,.4)}
.whb-amber:hover{transform:translateY(-2px);filter:brightness(1.05)}
.wh-lock{font-size:.98rem}
.wh-prem-foot{margin:1.3rem 0 0;font-size:.85rem;color:#c3b096}
.wh-prem-foot a{color:#e6c48f}

@media (max-width:820px){
  .wh-hero-inner{grid-template-columns:1fr;gap:2.2rem}
  .wh-art{order:-1;max-width:440px}
}
@media (max-width:560px){
  .wh-cta .whb{width:100%;justify-content:center}
}

/* --- motion: moving wood, sweeps, motes, scroll-reveal --- */
.wh-motes{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.wh-hero-inner{z-index:1}
@media (prefers-reduced-motion:no-preference){
  /* scroll reveal (only pre-hidden once JS adds .anim to <html>) */
  .anim .woodhome .reveal{opacity:0;transform:translateY(22px);
    transition:opacity .7s ease,transform .8s cubic-bezier(.2,.75,.25,1)}
  .anim .woodhome .reveal.in{opacity:1;transform:none}
  .wh-grid .wh-card:nth-child(2){transition-delay:.08s}
  .wh-grid .wh-card:nth-child(3){transition-delay:.16s}
  .wh-grid .wh-card:nth-child(4){transition-delay:.24s}

  /* warm sunlight drifting across the hero */
  .wh-hero{background-size:200% 200%,100% 100%;animation:whSun 19s ease-in-out infinite alternate}
  @keyframes whSun{0%{background-position:76% 4%,0 0}100%{background-position:96% 22%,0 0}}

  /* floating sawdust motes */
  .wh-mote{position:absolute;bottom:-10px;border-radius:50%;
    background:radial-gradient(circle at 35% 30%,#eec48a,#b9843f);
    animation-name:whMote;animation-timing-function:linear;animation-iteration-count:infinite;
    will-change:transform,opacity}
  @keyframes whMote{
    0%{transform:translate3d(0,0,0);opacity:0}
    8%{opacity:1}
    86%{opacity:.6}
    100%{transform:translate3d(var(--drift,0),-118vh,0);opacity:0}}

  /* light sheen sweeping across the timber panel */
  .wh-art-sheen{position:absolute;top:0;bottom:0;left:-50%;width:40%;pointer-events:none;z-index:1;
    background:linear-gradient(100deg,transparent,rgba(255,247,226,.6),transparent);
    transform:skewX(-12deg);animation:whSheen 7s ease-in-out 1.4s infinite}
  @keyframes whSheen{0%{left:-50%}55%{left:125%}100%{left:125%}}

  /* slowly panning wood grain */
  .wh-art-grain{animation:whGrain 26s linear infinite}
  @keyframes whGrain{from{background-position:0 0}to{background-position:200px 0}}

  /* pulsing gravity-load arrows on the beam */
  .wh-load{transform-box:fill-box;transform-origin:center;animation:whLoad 2.6s ease-in-out infinite}
  @keyframes whLoad{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(4px);opacity:1}}

  /* button sheen */
  .whb-primary,.whb-amber{position:relative;overflow:hidden}
  .whb-primary::after,.whb-amber::after{content:"";position:absolute;top:0;bottom:0;left:-60%;width:38%;
    background:linear-gradient(100deg,transparent,rgba(255,255,255,.4),transparent);transform:skewX(-14deg);
    animation:whBtn 4.8s ease-in-out 1s infinite}
  @keyframes whBtn{0%{left:-60%}42%{left:135%}100%{left:135%}}
}
.icon-beam{background:linear-gradient(135deg,#1f2937,#6366f1)}
.icon-column{background:linear-gradient(135deg,#4338ca,#818cf8)}
.icon-diaphragm{background:linear-gradient(135deg,#4f46e5,#4f46e5)}
.icon-shearwall{background:linear-gradient(135deg,#4338ca,#818cf8)}
.icon-connection{background:linear-gradient(135deg,#1e293b,#6366f1)}

/* module header */
.module-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:1.2rem}
.module-head h1{margin:0;color:var(--wood-900);font-size:1.9rem}
.sub{color:var(--muted);margin:.25rem 0 0}

/* form */
.design-form{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:1.4rem;box-shadow:var(--shadow)}
.toolbar{display:flex;flex-wrap:wrap;gap:1.5rem;align-items:center;padding-bottom:1.1rem;
  margin-bottom:1.1rem;border-bottom:1px solid var(--line)}
.toolbar-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);
  margin-right:.5rem;font-weight:600}
.edition-switch,.method-switch{display:flex;align-items:center;gap:.35rem;background:var(--bg);
  padding:.3rem;border-radius:10px;border:1px solid var(--line)}
.seg{position:relative;padding:.4rem .85rem;border-radius:7px;cursor:pointer;font-size:.88rem;
  font-weight:500;color:var(--muted);transition:all .12s}
.seg input{position:absolute;opacity:0;inset:0;cursor:pointer}
.seg.on{background:var(--wood-900);color:#fff}
.method-seg.on{background:var(--accent);color:#fff}

.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}
.field{display:flex;flex-direction:column;gap:.3rem}
.field-wide{grid-column:span 2}
.field label{font-size:.85rem;font-weight:600;color:var(--wood-900)}
.field .unit{color:var(--muted);font-weight:400}
.field input,.field select{padding:.55rem .65rem;border:1px solid var(--line);border-radius:8px;
  font-size:.95rem;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(194,65,12,.12)}
.field .help{color:var(--muted);font-size:.75rem}
.built-up-note{margin:.9rem 0 0;padding:.7rem .85rem;font-size:.8rem;line-height:1.5;
  color:var(--muted);background:var(--bg);border:1px solid var(--line);
  border-left:3px solid var(--line);border-radius:8px}
.built-up-note strong{color:var(--wood-900)}
.built-up-note.active{color:var(--ink);background:#eef2ff;border-color:#c7d2fe;
  border-left-color:var(--accent)}
.supports-note{margin:.5rem 0 0;padding:.5rem .7rem;font-size:.78rem;border-radius:7px;
  color:var(--muted);background:var(--bg);border:1px dashed var(--line)}
.supports-note.active{color:var(--ink);background:#eef2ff;border:1px solid #c7d2fe}
.checkbox{flex-direction:row;align-items:center;gap:.4rem;font-weight:500}
.checkbox input{width:auto}

.actions{display:flex;align-items:center;gap:1rem;margin-top:1.3rem}
.btn-primary{background:var(--accent);color:#fff;border:none;padding:.7rem 1.6rem;border-radius:9px;
  font-size:1rem;font-weight:600;cursor:pointer;box-shadow:0 2px 8px rgba(194,65,12,.25)}
.btn-primary:hover{background:var(--accent-700)}
.btn-ghost{background:transparent;border:1px solid var(--line);padding:.45rem 1rem;border-radius:8px;
  cursor:pointer;font-weight:500;color:var(--wood-700)}
.edition-note{color:var(--muted);font-size:.85rem}

/* alerts */
.alert{border-radius:10px;padding:.9rem 1.1rem;margin:1.2rem 0}
.alert.error{background:var(--no-bg);border:1px solid #fca5a5;color:var(--no)}
.alert.warn{background:var(--warn-bg);border:1px solid #fde68a;color:var(--warn)}
.alert.info{background:#eef5fb;border:1px solid #bcd9f0;color:#1e466b}
.form-note{margin:0 0 1rem;font-size:.9rem;line-height:1.45}
/* per-variable info tooltip (hover/focus) */
.info-tip{display:inline-grid;place-items:center;width:15px;height:15px;margin-left:.35rem;
  border-radius:50%;background:#c7d2fe;color:#fff;font-size:10px;font-weight:700;font-style:italic;
  font-family:Georgia,'Times New Roman',serif;cursor:help;vertical-align:middle;position:relative;
  user-select:none;line-height:1}
.info-tip:hover,.info-tip:focus{background:var(--accent,#4338ca);outline:none}
.info-tip::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 8px);
  transform:translateX(-50%);width:max-content;max-width:260px;white-space:normal;
  background:#0f1729;color:#f9fafb;font-size:.74rem;font-style:normal;font-weight:400;line-height:1.35;
  text-align:left;padding:.5rem .6rem;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.25);
  opacity:0;visibility:hidden;transition:opacity .12s;z-index:50;pointer-events:none}
.info-tip::before{content:"";position:absolute;left:50%;bottom:calc(100% + 2px);transform:translateX(-50%);
  border:6px solid transparent;border-top-color:#0f1729;opacity:0;visibility:hidden;transition:opacity .12s;z-index:50}
.info-tip:hover::after,.info-tip:focus::after,.info-tip:hover::before,.info-tip:focus::before{opacity:1;visibility:visible}
@media (max-width:640px){.info-tip::after{max-width:200px;left:auto;right:0;transform:none}}
.alert ul{margin:.4rem 0 0;padding-left:1.2rem}

/* report */
.report{margin-top:1.8rem}
.verdict{display:flex;align-items:center;gap:1rem;border-radius:14px;padding:1.1rem 1.4rem;
  box-shadow:var(--shadow);margin-bottom:1.4rem}
.verdict.pass{background:var(--ok-bg);border:1px solid #86efac}
.verdict.fail{background:var(--no-bg);border:1px solid #fca5a5}
.verdict.result{background:#eef5fb;border:1px solid #bcd9f0}
.verdict.result .verdict-icon{background:#2f6da3}
.verdict.result strong{color:#1e466b}
.verdict-icon{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  font-size:1.4rem;font-weight:800;color:#fff}
.verdict.pass .verdict-icon{background:var(--ok)}
.verdict.fail .verdict-icon{background:var(--no)}
.verdict-text{display:flex;flex-direction:column}
.verdict-text strong{font-size:1.1rem;letter-spacing:.5px}
.verdict.pass strong{color:var(--ok)} .verdict.fail strong{color:var(--no)}
.verdict-text span{color:var(--muted);font-size:.9rem}
.verdict-edition{margin-left:auto;font-size:.8rem;color:var(--muted);
  border:1px solid var(--line);padding:.3rem .7rem;border-radius:999px;background:#fff}

.summary-chips{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.4rem}
.chip{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:10px;padding:.55rem .9rem;min-width:120px}
.chip-k{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.chip-v{font-size:1.05rem;font-weight:700;color:var(--wood-900)}

h2{color:var(--wood-900);font-size:1.3rem;margin:1.8rem 0 .8rem}

table.checks{width:100%;border-collapse:collapse;background:var(--panel);border-radius:12px;
  overflow:hidden;box-shadow:var(--shadow)}
table.checks th{background:var(--wood-900);color:#fff;text-align:left;padding:.65rem .8rem;
  font-size:.8rem;text-transform:uppercase;letter-spacing:.4px}
table.checks td{padding:.65rem .8rem;border-top:1px solid var(--line);font-size:.92rem}
table.checks tr.no td{background:var(--no-bg)}
.ratio-bar{display:inline-block;width:90px;height:8px;background:var(--line);border-radius:5px;
  overflow:hidden;vertical-align:middle;margin-right:.5rem}
.ratio-bar span{display:block;height:100%;background:var(--ok)}
.ratio-bar span.over{background:var(--no)}
td.ref{color:var(--muted);font-size:.8rem}

.calc-toolbar{margin-bottom:1rem}
.calc-section{background:var(--panel);border:1px solid var(--line);border-radius:12px;
  margin-bottom:1.1rem;overflow:hidden;box-shadow:var(--shadow)}
.calc-section h3{margin:0;padding:.8rem 1.1rem;background:#f3f4f6;
  color:var(--wood-900);font-size:1.02rem;border-bottom:1px solid var(--line)}
table.steps{width:100%;border-collapse:collapse}
table.steps td{padding:.7rem 1.1rem;border-top:1px solid var(--line);vertical-align:top}
.st-label{width:32%;font-weight:600;color:var(--wood-900);font-size:.92rem}
.st-note{display:block;font-weight:400;color:var(--muted);font-size:.78rem;margin-top:.2rem}
.st-math{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:.88rem}
.st-math .eq{color:var(--ink)}
.st-math .sub{color:var(--muted);margin-top:.15rem}
.st-math .res{color:var(--accent-700);font-weight:700;margin-top:.25rem}
.st-ref{width:22%;color:var(--muted);font-size:.78rem;text-align:right}

.footer{border-top:1px solid var(--line);padding:1.5rem;text-align:center;color:var(--muted);
  font-size:.82rem;background:var(--panel)}
.footer-disclaimer{max-width:680px;margin:.6rem auto 0;font-size:.68rem;line-height:1.4;opacity:.75}
.foot-free{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;justify-content:center;
  margin:0 auto .9rem;padding-bottom:.9rem;border-bottom:1px solid var(--line);max-width:700px}
.foot-free a{color:var(--accent);font-size:.84rem;font-weight:600}
.foot-free a:hover{text-decoration:underline}

/* diagram panel */
.diagram-panel{background:linear-gradient(180deg,#ffffff,#f9fafb);border:1px solid var(--line);
  border-radius:12px;padding:.8rem 1rem 1rem;margin-bottom:1.3rem;box-shadow:inset 0 1px 0 #fff}
.diagram-caption{font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;color:var(--wood-700);
  font-weight:700;margin-bottom:.4rem}
.diagram-caption small{text-transform:none;letter-spacing:0;color:var(--muted);font-weight:400}
.diagram-stage{display:flex;justify-content:center}
.diagram-hint{margin-top:-.25rem}
input.locked-by-section{background:#f3f4f6;color:var(--wood-700);cursor:not-allowed}
.dgm{width:100%;max-width:680px;height:auto;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
.dgm-err{color:var(--muted);font-size:.85rem;padding:1rem}

/* svg element classes */
.dgm .ml{stroke:#0f1729;stroke-width:1.4;fill:none}
.dgm .member{fill:url(#wood);stroke:var(--wood-700);stroke-width:1.6}
.dgm .member2{fill:#c7d2fe;stroke:var(--wood-700);stroke-width:1.4}
.dgm .section{fill:url(#wood);stroke:var(--wood-700);stroke-width:1.6}
.dgm .support{fill:var(--wood-700);stroke:var(--wood-900);stroke-width:1}
.dgm .ground{stroke:#0f1729;stroke-width:2}
.dgm .hatchfill{fill:url(#hatch);stroke:var(--wood-700);stroke-width:1}
.dgm .panel{fill:#eef2ff;stroke:var(--wood-700);stroke-width:1.6}
.dgm .sheath{fill:url(#wood);stroke:var(--wood-700);stroke-width:1.6}
.dgm .opening{fill:#fff;stroke:var(--wood-700);stroke-width:1.4;stroke-dasharray:4 3}
.dgm .holddown{fill:#1e293b}
.dgm .anchor{fill:#0f1729}
.dgm .hanger{fill:none;stroke:#5b6470;stroke-width:5}
.dgm .hangerf{fill:#aab3bf;stroke:#5b6470;stroke-width:1.4;opacity:.7}
.dgm .wood{fill:url(#wood);stroke:var(--wood-700);stroke-width:1.4}
.dgm .fastener{fill:#6b7280;stroke:#374151;stroke-width:1}
.dgm .metalhead{fill:#9aa3af;stroke:#374151;stroke-width:1.2}
.dgm .thread{stroke:#374151;stroke-width:1.1}
.dgm .slot{stroke:#374151;stroke-width:1.4}
.dgm .steel{fill:#aab3bf;stroke:#5b6470;stroke-width:1.4}
.dgm .steelwide{fill:none;stroke:#8b95a3;stroke-width:7;stroke-linejoin:round;stroke-linecap:round}
.dgm .naildot{fill:#374151;stroke:#1f2937;stroke-width:.6}
.dgm .shear{stroke:var(--accent);stroke-width:1.6;stroke-dasharray:6 3}
.dgm .chord{stroke:var(--wood-900);stroke-width:3}
.dgm .deflect{fill:none;stroke:var(--accent);stroke-width:1.4;stroke-dasharray:5 4;opacity:.8}
.dgm .load{stroke:var(--accent);stroke-width:1.6;fill:none}
.dgm .loadB{stroke:var(--accent);stroke-width:2.4;fill:none}
.dgm .loadtop{stroke:var(--accent);stroke-width:2}
.dgm .moment{fill:none;stroke:var(--accent);stroke-width:2}
.dgm .dimln{stroke:#6b7280;stroke-width:1}
.dgm text{fill:var(--ink)}
.dgm .lbl{font-size:12px;fill:var(--ink)}
.dgm .lblb{font-size:12.5px;font-weight:700;fill:var(--wood-900)}
.dgm .lblw{font-size:12px;font-weight:700;fill:#fff}
.dgm .notew{font-size:10.5px;fill:#fff;opacity:.9}
.dgm .cap{font-size:11px;fill:var(--muted);font-style:italic}
.dgm .dim{font-size:11px;fill:#475569;font-weight:600}
.dgm .note{font-size:10.5px;fill:var(--muted)}
.dgm .noteV{font-size:10px;fill:var(--muted)}
.dgm .noteO{font-size:10px;fill:var(--wood-900);font-weight:600}

/* ===================== building design ===================== */
.nav-building{font-weight:700}
.building-app{margin-top:.4rem}

/* step nav */
.step-nav{display:flex;gap:.5rem;list-style:none;padding:0;margin:0 0 1.2rem;flex-wrap:wrap}
.step-nav .step{display:flex;align-items:center;gap:.5rem;padding:.5rem .9rem;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);cursor:pointer;color:var(--muted);
  font-weight:600;font-size:.9rem}
.step-nav .step span{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;
  background:var(--line);color:var(--wood-900);font-size:.78rem}
.step-nav .step.on{border-color:var(--accent);color:var(--accent-700);background:#fff}
.step-nav .step.on span{background:var(--accent);color:#fff}

/* toolbar */
.bld-toolbar{display:flex;align-items:center;gap:1.4rem;flex-wrap:wrap;background:var(--panel);
  border:1px solid var(--line);border-radius:12px;padding:.8rem 1rem;margin-bottom:1.3rem;box-shadow:var(--shadow)}
.bld-name{display:flex;flex-direction:column;gap:.25rem}
.bld-name input{border:1px solid var(--line);border-radius:8px;padding:.45rem .6rem;font-size:.95rem;min-width:220px}
.toolbar-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);font-weight:700}
.edition-switch{display:flex;align-items:center;gap:.5rem}
.edition-switch>div{display:flex;gap:.3rem}
.bld-tools{margin-left:auto;display:flex;gap:.5rem}

/* buttons */
.btn-secondary{background:var(--wood-700);color:#fff;border:none;padding:.5rem 1rem;border-radius:8px;
  font-weight:600;cursor:pointer;font-size:.9rem}
.btn-secondary:hover{background:var(--wood-900)}
.btn-icon{background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:1rem;
  line-height:1;padding:.2rem .4rem;border-radius:6px}
.btn-icon:hover{background:var(--no-bg);color:var(--no)}
.btn-mini{display:inline-block;background:var(--accent);color:#fff;border-radius:7px;padding:.3rem .6rem;
  font-size:.8rem;font-weight:600;text-decoration:none}
.btn-mini:hover{background:var(--accent-700)}

/* panels */
.step-panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.3rem;
  box-shadow:var(--shadow)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.6rem}
.panel-head.sm h3{font-size:1rem;margin:0}
.panel-head h2{margin:0}
.hint{color:var(--muted);font-size:.88rem;margin:.3rem 0 1rem}
.step-actions{display:flex;justify-content:space-between;gap:1rem;margin-top:1.3rem}
.step-actions:only-child,.step-actions>:only-child{margin-left:auto}

/* editable grids */
.table-wrap{overflow-x:auto}
.grid-table{width:100%;border-collapse:collapse;font-size:.9rem}
.grid-table th{text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.4px;
  color:var(--muted);padding:.35rem .4rem;border-bottom:1px solid var(--line)}
.grid-table td{padding:.25rem .3rem;border-bottom:1px solid var(--line)}
.grid-table input,.grid-table select{width:100%;min-width:62px;border:1px solid var(--line);
  border-radius:6px;padding:.35rem .4rem;font-size:.88rem;background:#fff}
.grid-table input.w-id{min-width:54px;font-weight:600}
.grid-table .row-actions{width:34px;text-align:center}

/* layout step */
.layout-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,1fr);gap:1.4rem;align-items:start}
.floor-tabs{display:flex;gap:.4rem;flex-wrap:wrap}
.floor-tab{border:1px solid var(--line);background:#fff;border-radius:8px;padding:.4rem .7rem;cursor:pointer;
  font-weight:600;color:var(--wood-700);font-size:.88rem}
.floor-tab small{color:var(--muted);font-weight:400}
.floor-tab.on{border-color:var(--accent);background:#fff;color:var(--accent-700);box-shadow:0 0 0 2px rgba(194,65,12,.12)}
.plan-wrap{background:linear-gradient(180deg,#ffffff,#f9fafb);border:1px solid var(--line);border-radius:12px;
  padding:.8rem 1rem 1rem}
.plan-stage{display:flex;justify-content:center}
.plan-svg{width:100%;max-width:580px;height:auto;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
.plan-legend{display:flex;gap:1rem;flex-wrap:wrap;margin-top:.5rem;font-size:.78rem;color:var(--muted)}
.plan-legend .lg{display:inline-block;width:16px;height:8px;vertical-align:middle;margin-right:.3rem;border-radius:2px}
.lg-wallx{background:var(--accent)} .lg-wally{background:#0f766e}
.lg-com{background:var(--wood-900);border-radius:50%;width:10px;height:10px}
.lg-cr{background:none;border:2px solid #0369a1;width:10px;height:10px}
.wall-side .assembly{margin-top:.8rem;border:1px solid var(--line);border-radius:10px;padding:.4rem .7rem}
.wall-side .assembly summary{cursor:pointer;font-weight:600;color:var(--wood-700);font-size:.88rem}
.assembly-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;margin-top:.7rem}
.asm-field{display:flex;flex-direction:column;gap:.2rem;font-size:.78rem;color:var(--muted)}
.asm-field select{border:1px solid var(--line);border-radius:6px;padding:.35rem .4rem;font-size:.85rem;color:var(--ink)}

/* plan svg */
.plan-slab{fill:#eef2ff;stroke:var(--wood-700);stroke-width:1.6}
.plan-wallx{stroke:var(--accent);stroke-width:5;stroke-linecap:round}
.plan-wally{stroke:#0f766e;stroke-width:5;stroke-linecap:round}
.plan-wlbl{font-size:11px;font-weight:700;fill:var(--wood-900);text-anchor:middle}
.plan-wload{font-size:10px;font-weight:700;fill:var(--accent-700);text-anchor:middle}
.w-stories{width:3.4rem}
/* freehand floor drawing */
.plan-stage.drawing .plan-svg{cursor:crosshair}
.plan-draw{fill:rgba(79,70,229,.09);stroke:var(--accent);stroke-width:2;stroke-dasharray:6 4}
.plan-drawpt{fill:#fff;stroke:var(--accent);stroke-width:2}
.plan-drawpt.first{fill:var(--accent)}
.plan-drawhint{font-size:12px;font-weight:600;fill:var(--accent-700);text-anchor:middle}
/* ASCE 7 load generator */
.loadgen{border:1px solid var(--line);border-radius:10px;margin:0 0 1.1rem;background:#fbfaf7}
.loadgen>summary{cursor:pointer;padding:.6rem .9rem;font-weight:600;color:var(--wood-900)}
.loadgen-body{padding:.2rem .9rem .9rem}
.loadgen-row{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin-bottom:.6rem}
.loadgen-params{display:flex;flex-wrap:wrap;gap:.7rem;margin-bottom:.3rem}
.lp-field{display:flex;flex-direction:column;font-size:12px;color:#475569;gap:2px}
.lp-field input,.lp-field select{padding:4px 7px;border:1px solid #cbd5e1;border-radius:6px;font:inherit;font-size:13px;width:8rem}
.loadgen-note{margin:.35rem 0 0;font-size:12.5px}
.plan-dim{stroke:#6b7280;stroke-width:1}
.plan-dimlbl{font-size:11px;fill:#475569;font-weight:600;text-anchor:middle}
.plan-force{stroke:var(--accent);stroke-width:2}
.plan-force .ar-line{stroke:var(--accent);stroke-width:2}
.plan-forcelbl{font-size:11px;font-weight:700;fill:var(--accent-700)}
.plan-com{fill:var(--wood-900)}
.plan-marklbl{font-size:10.5px;fill:var(--wood-900);font-weight:600}
.plan-crline{stroke:#0369a1;stroke-width:2.4}

/* results */
.result-chips{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.2rem}
.floor-result{border:1px solid var(--line);border-radius:12px;margin-bottom:1.2rem;overflow:hidden;background:#fff}
.floor-result-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:.7rem 1rem;background:#f3f4f6;border-bottom:1px solid var(--line)}
.floor-result-head h3{margin:0;font-size:1.05rem;color:var(--wood-900);display:flex;align-items:center;gap:.6rem}
.tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.4px;padding:.15rem .5rem;border-radius:999px;font-weight:700}
.tag-rigid{background:#e0f2fe;color:#075985} .tag-flexible{background:#fef3c7;color:#92600a}
.floor-meta{display:flex;gap:1rem;flex-wrap:wrap;font-size:.82rem;color:var(--muted)}
.result-table{width:100%;border-collapse:collapse;font-size:.88rem}
.result-table th{background:var(--wood-900);color:#fff;text-align:right;padding:.5rem .7rem;font-size:.74rem;
  text-transform:uppercase;letter-spacing:.3px}
.result-table th:first-child,.result-table th:nth-child(2){text-align:left}
.result-table td{padding:.45rem .7rem;border-top:1px solid var(--line);text-align:right;
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
.result-table td.w-id-cell{text-align:left;font-weight:700;font-family:inherit;color:var(--wood-900)}
.result-table td.row-actions{text-align:center}
.floor-links{display:flex;gap:.7rem;flex-wrap:wrap;padding:.8rem 1rem;border-top:1px solid var(--line)}
.report-detail{padding:1rem;border-top:1px solid var(--line);background:#f9fafb}

/* ===== workspace: in-app tab bar (no page reloads) ===== */
.workspace{margin-top:.4rem}
.ws-tabs{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap;border-bottom:2px solid var(--line);
  margin-bottom:1.2rem;padding-bottom:0}
.ws-tab{position:relative;border:1px solid transparent;border-bottom:none;background:transparent;
  padding:.6rem 1rem;border-radius:9px 9px 0 0;cursor:pointer;font-weight:600;font-size:.9rem;
  color:var(--wood-700);margin-bottom:-2px;white-space:nowrap}
.ws-tab:hover{background:#f3f4f6;color:var(--wood-900)}
.ws-tab.on{background:#fff;border-color:var(--line);border-bottom:2px solid #fff;color:var(--accent-700)}
.ws-tab-el{font-weight:600}
.ws-tab-el::before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:.45rem;
  vertical-align:middle;background:var(--accent)}
.ws-tab-diaphragm::before{background:#0f766e}
.ws-tab-3d{margin-left:auto;color:#0369a1}
.ws-tab-3d.on{color:#0369a1}
.ws-tab-sep{width:1px;height:22px;background:var(--line);margin:0 .3rem}
.ws-pane{display:none}
.ws-pane.on{display:block;animation:wsFade .14s ease}
@keyframes wsFade{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}

/* ===== embedded per-element calculator panes ===== */
.alert.ok-note{background:var(--ok-bg);border:1px solid #86efac;color:#14532d}
.ok-note b{color:var(--ok)}
.el-tools{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;margin:.4rem 0 1rem;
  padding:.7rem .9rem;background:var(--bg);border:1px solid var(--line);border-radius:10px}
.el-tools .btn-ghost{margin-left:auto}
.el-form{margin-top:.4rem}
.el-report{margin-top:1.4rem}

/* ===== diaphragm shape controls ===== */
.shape-controls{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin-bottom:.9rem;
  padding:.7rem .9rem;background:var(--bg);border:1px solid var(--line);border-radius:10px}
.shape-controls select{border:1px solid var(--line);border-radius:7px;padding:.4rem .5rem;
  font-size:.88rem;color:var(--ink);background:#fff}
.shape-controls .help{flex-basis:100%;color:var(--muted);font-size:.76rem;margin-top:.1rem}

/* draggable plan handles (SVG rects) */
.plan-handle{fill:#fff;stroke:var(--accent);stroke-width:1.6;cursor:grab;rx:2}
.plan-handle:hover{fill:var(--accent)}
.plan-handle-vtx{stroke:#0369a1;fill:#fff}
.plan-handle-vtx:hover{fill:#0369a1}
.lg-vtx{background:#fff;border:2px solid #0369a1;width:10px;height:10px;border-radius:2px}

/* ===== 3D view ===== */
.threed-tools{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.check-inline{display:flex;align-items:center;gap:.35rem;font-size:.85rem;color:var(--wood-700);font-weight:500}
.check-inline input{width:auto}
.threed-stage{width:100%;height:560px;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:linear-gradient(180deg,#fbfcfe,#f3f4f6);box-shadow:var(--shadow);margin-top:.4rem}
.threed-stage canvas{display:block;width:100%;height:100%}

@media (max-width:880px){
  .layout-grid{grid-template-columns:1fr}
  .assembly-grid{grid-template-columns:1fr}
  .threed-stage{height:420px}
}
@media (max-width:640px){
  .topnav{display:none}.field-wide{grid-column:span 1}.st-label{width:auto}
  .module-head{flex-direction:column;align-items:flex-start}
  .bld-tools{margin-left:0}
}
/* inline field validation */
.field.invalid input,.field.invalid select{border-color:#dc2626;background:#fef2f2}
.field-error{display:block;color:#b91c1c;font-size:.72rem;margin-top:.2rem;font-weight:600}
/* project / prepared-by bar */
.meta-bar{display:flex;flex-wrap:wrap;gap:.6rem;margin:0 0 1rem}
.meta-bar input{flex:1 1 180px;min-width:140px;padding:.45rem .6rem;border:1px solid var(--line,#e0e7ff);border-radius:8px;font-size:.85rem}
/* representative-value badge on a step */
.rep-badge{display:inline-block;margin-left:.4rem;font-size:.62rem;font-weight:700;color:#4338ca;background:#eef2ff;border:1px solid #fcd9bd;border-radius:5px;padding:.02rem .3rem;vertical-align:middle;cursor:help}
.rep-foot{font-size:.74rem;color:var(--muted,#374151);margin:.5rem 0 0;font-style:italic}
.copy-link.copied{color:#065f46}
/* print-only run sheet */
.print-only{display:none}
@media print{
  .topbar,.footer,.design-form,.calc-toolbar,.nav,.topnav,.val-panel{display:none !important}
  .report{margin:0}body{background:#fff}
  .print-only{display:block}
  .print-head{margin:0 0 14px;border-bottom:2px solid #0f1729;padding-bottom:8px}
  .ph-title{font-size:1.2rem;font-weight:800;color:#0f1729}
  .ph-meta{font-size:.82rem;color:#0f1729;margin-top:2px}
  .ph-sub{font-weight:700;font-size:.8rem;margin:8px 0 3px}
  .ph-inputs{width:100%;border-collapse:collapse;font-size:.74rem}
  .ph-inputs td{border:1px solid #e0e7ff;padding:2px 6px}
  .ph-inputs td:first-child{color:#374151;width:55%}
}

/* ============================================================ *
 *  Artistic landing — parallax wood structure                   *
 * ============================================================ */
.landing{position:relative;z-index:1;margin:-2rem -1.5rem -4rem}     /* break out of .container padding */

/* fixed full-bleed scene behind the content */
.woodscape{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none;background:#0a1022}
.woodscape .layer{position:absolute;left:0;right:0;top:-8%;bottom:-8%;will-change:transform}
.woodscape .layer svg{width:100%;height:100%;display:block}
.woodscape-veil{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(249,250,251,0) 38%,rgba(249,250,251,.35) 70%,var(--bg) 100%)}

/* sun rays + drifting sawdust motes */
@keyframes sunspin{to{transform:rotate(360deg)}}
.woodscape .sun-rays{transform-box:fill-box;transform-origin:center;animation:sunspin 120s linear infinite}
@keyframes mote{
  0%{transform:translate3d(0,0,0);opacity:0}
  10%{opacity:.85}
  90%{opacity:.5}
  100%{transform:translate3d(var(--mx,20px),var(--my,-120px),0);opacity:0}
}
.mote{animation:mote var(--md,16s) ease-in-out infinite;animation-delay:var(--mdl,0s)}

/* hero overlaid on the scene */
.hero-art{position:relative;z-index:2;min-height:calc(100vh - 60px);
  display:flex;align-items:center;justify-content:center;text-align:center;padding:2rem 1.5rem}
.hero-art-inner{max-width:680px}
.hero-art-title{font-size:clamp(3rem,9vw,6.2rem);line-height:.98;margin:.4rem 0 .8rem;
  font-weight:800;letter-spacing:-1.5px;
  background:linear-gradient(160deg,#ffffff,#c7d2fe 48%,#818cf8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 34px rgba(10,16,34,.6)}
.hero-art-sub{font-size:clamp(1.02rem,2.2vw,1.28rem);color:#dbe3f7;
  max-width:560px;margin:0 auto;font-weight:500;
  text-shadow:0 2px 16px rgba(7,11,24,.75)}
.edition-pill.glass{display:inline-block;padding:.45rem 1.1rem;border-radius:999px;
  font-size:.82rem;font-weight:700;letter-spacing:.6px;color:#e6ebfb;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:0 6px 24px rgba(15,23,42,.12)}
.scroll-cue{display:inline-flex;flex-direction:column;align-items:center;gap:.2rem;margin-top:2.4rem;
  color:#aeb9e8;font-weight:700;font-size:.8rem;letter-spacing:1.5px;text-transform:uppercase}
.scroll-chev{width:26px;height:26px;fill:none;stroke:#818cf8;stroke-width:2.4;
  stroke-linecap:round;stroke-linejoin:round;animation:cuebob 1.8s ease-in-out infinite}
@keyframes cuebob{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}

/* choice section — frosted panel that rises over the scene */
.choose{position:relative;z-index:2;margin-top:6vh;padding:3rem 1.5rem 4rem;
  background:linear-gradient(180deg,rgba(249,250,251,.72),var(--bg) 22%);
  backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);
  border-top:1px solid rgba(255,255,255,.6);border-radius:30px 30px 0 0;
  box-shadow:0 -20px 60px rgba(15,23,42,.10)}
.choose-head{text-align:center;max-width:1080px;margin:0 auto 1.6rem}
.choose-head .kicker{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:2px;
  text-transform:uppercase;color:var(--accent);margin-bottom:.4rem}
.choose-head h2{font-size:clamp(1.6rem,4vw,2.3rem);color:var(--wood-900);margin:0}
.choose .section-grid{max-width:1080px;margin:0 auto}

/* card reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .woodscape .layer{transform:none !important}
  .sun-rays,.mote,.scroll-chev{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ===== Multi-discipline home + Mechanical (Manual J) =================== */

/* discipline / detail section stacking on the landing page */
.choose + .choose{margin-top:0;border-top:none;border-radius:0;box-shadow:none;
  padding-top:1rem;backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg)}
.section-grid-single{max-width:560px}
.section-grid-single .section-card{margin:0 auto}

/* new discipline icons */
.icon-wood{background:linear-gradient(135deg,#1f2937,#818cf8)}
.icon-mech{background:linear-gradient(135deg,#0369a1,#0ea5e9)}
.icon-hvac{background:linear-gradient(135deg,#0e7490,#22d3ee)}

/* inline beta tag next to a page heading */
.inline-beta{display:inline-block;vertical-align:middle;background:var(--accent);color:#fff;
  font-size:.6rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;
  padding:.18rem .45rem;border-radius:999px;margin-left:.5rem;transform:translateY(-3px)}

/* ---- Manual J workspace ---- */
.mj-loading{color:var(--muted);padding:2rem;text-align:center}
.mj-toolbar{display:flex;align-items:center;gap:.6rem;margin:1.2rem 0}
.mj-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:1.2rem 1.3rem;margin-bottom:1.2rem;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.mj-card>h3{margin:0 0 1rem;font-size:1.05rem;color:var(--wood-900)}
.mj-card-head{display:flex;align-items:center;gap:.6rem;margin-bottom:1rem}
.mj-room-name{font-size:1.05rem;font-weight:700;color:var(--wood-900);
  border:1px solid transparent;border-radius:8px;padding:.35rem .5rem;background:#f9fafb;flex:1;max-width:320px}
.mj-room-name:focus{outline:none;border-color:var(--accent);background:#fff}
.mj-del-room,.mj-del{background:#fff;border:1px solid var(--line);color:var(--no);
  border-radius:8px;cursor:pointer;font-size:1rem;line-height:1;width:30px;height:30px;
  display:grid;place-items:center;transition:all .12s}
.mj-del-room:hover,.mj-del:hover{background:var(--no-bg);border-color:#fca5a5}

.mj-cond-top{margin-bottom:1rem;max-width:340px}
.mj-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.9rem}
.mj-grid-5{margin-top:1rem}
.mj-grid .field label,.mj-cond-top .field label{font-size:.8rem;font-weight:600;color:var(--ink);margin-bottom:.3rem;display:block}
.mj-grid .field input,.mj-grid .field select,.mj-cond-top .field select{width:100%;
  padding:.5rem .6rem;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:.92rem}
.mj-grid .field input:focus,.mj-grid .field select:focus,.mj-cond-top .field select:focus{outline:none;border-color:var(--accent)}

/* surfaces table */
.mj-surf{width:100%;border-collapse:collapse;margin-bottom:.4rem}
.mj-surf th{text-align:left;font-size:.7rem;text-transform:uppercase;letter-spacing:.4px;
  color:var(--muted);font-weight:700;padding:.3rem .4rem;border-bottom:1px solid var(--line)}
.mj-surf td{padding:.3rem .4rem;border-bottom:1px solid var(--line);vertical-align:middle}
.mj-surf input,.mj-surf select{width:100%;padding:.4rem .45rem;border:1px solid var(--line);
  border-radius:7px;background:#fff;color:var(--ink);font-size:.86rem}
.mj-surf input:focus,.mj-surf select:focus{outline:none;border-color:var(--accent)}
.mj-surf td:nth-child(4) input,.mj-surf td:nth-child(5) input,
.mj-surf td:nth-child(7) input{max-width:90px}
.mj-surf td:nth-child(6),.mj-surf td:nth-child(7){text-align:center}
.mj-dash{color:var(--muted);font-size:.8rem}
.mj-surf-add{margin:.5rem 0 .2rem}
.mj-add-room{margin-top:.2rem}
.mj-actions{display:flex;align-items:center;gap:1rem;margin:1.4rem 0 .4rem}

/* results */
.mj-report{margin-top:2rem}
.mj-hero{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.3rem}
.mj-hero-card{border-radius:16px;padding:1.3rem 1.5rem;color:#fff;position:relative;overflow:hidden}
.mj-hero-card.mj-heat{background:linear-gradient(135deg,#4338ca,#6366f1)}
.mj-hero-card.mj-cool{background:linear-gradient(135deg,#0369a1,#0ea5e9)}
.mj-hero-label{font-size:.78rem;text-transform:uppercase;letter-spacing:1px;opacity:.9}
.mj-hero-value{font-size:clamp(1.6rem,4.5vw,2.4rem);font-weight:800;line-height:1.1;margin-top:.2rem}
.mj-hero-sub{font-size:.85rem;opacity:.9;margin-top:.25rem}

.mj-bar-block{margin:0 0 1.1rem}
.mj-bar-title{display:flex;justify-content:space-between;align-items:baseline;
  font-weight:600;color:var(--wood-900);font-size:.92rem;margin-bottom:.4rem}
.mj-bar-total{color:var(--muted);font-weight:700;font-size:.85rem}
.mj-bar{display:flex;height:22px;border-radius:7px;overflow:hidden;border:1px solid var(--line);background:#fff}
.mj-seg{height:100%;min-width:2px;transition:width .3s ease}
.mj-legend{display:flex;flex-wrap:wrap;gap:.5rem 1rem;margin-top:.5rem;font-size:.78rem;color:var(--muted)}
.mj-leg{display:inline-flex;align-items:center;gap:.35rem}
.mj-leg-sw{width:11px;height:11px;border-radius:3px;display:inline-block}
.mj-rooms-table .mj-row-total td{font-weight:800;background:#f9fafb;border-top:2px solid var(--line)}

@media (max-width:720px){
  .mj-hero{grid-template-columns:1fr}
  .mj-surf{display:block;overflow-x:auto}
}

/* Manual J validation call-to-action + summary page */
.mj-validation-cta{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;
  flex-wrap:wrap;margin-top:2.5rem;padding:1.1rem 1.4rem;border:1px solid var(--line);
  border-radius:14px;background:linear-gradient(180deg,#fff,#f9fafb)}
.mj-validation-cta strong{color:var(--wood-900);display:block}
.mj-validation-cta span{color:var(--muted);font-size:.9rem}
.mj-validation-cta .btn-primary{white-space:nowrap}

.val-verdict{display:flex;align-items:center;gap:.9rem;margin:1.2rem 0 .5rem;padding:.9rem 1.2rem;
  border-radius:12px;background:var(--ok-bg);border:1px solid #bbf7d0;color:var(--wood-900);font-size:.95rem}
.val-verdict-tag{flex:none;background:var(--ok);color:#fff;font-weight:800;letter-spacing:1px;
  padding:.25rem .7rem;border-radius:7px;font-size:.78rem}
.val-block{margin:2rem 0;max-width:880px}
.val-block h2{color:var(--wood-900);font-size:1.15rem;margin:0 0 .6rem;
  border-bottom:1px solid var(--line);padding-bottom:.4rem}
.val-block p{margin:.5rem 0;color:var(--ink)}
.val-note{color:var(--muted);font-size:.84rem;line-height:1.55}
.val-block code{background:#f3f4f6;border-radius:5px;padding:.05rem .35rem;font-size:.82rem}
.result-table tr.val-row-ok td{background:var(--ok-bg)}
.result-table tr.val-row-total td{font-weight:800;background:#f9fafb;border-top:2px solid var(--wood-900)}

/* Manual J hover glossary tooltips */
.mj-term{position:relative;cursor:help;text-decoration:underline dotted;
  text-underline-offset:3px;text-decoration-thickness:1px;outline:none}
.mj-term:hover,.mj-term:focus-visible{color:var(--accent)}
.mj-term::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 9px);
  transform:translateX(-50%) translateY(4px);width:max-content;max-width:260px;
  background:var(--wood-900);color:#fff;border:1px solid rgba(255,255,255,.14);
  font-size:.76rem;font-weight:500;line-height:1.45;letter-spacing:normal;
  text-transform:none;text-align:left;white-space:normal;padding:.5rem .65rem;
  border-radius:8px;box-shadow:0 10px 28px rgba(0,0,0,.22);
  opacity:0;visibility:hidden;pointer-events:none;z-index:60;
  transition:opacity .12s ease,transform .12s ease}
.mj-term::before{content:"";position:absolute;left:50%;bottom:calc(100% + 3px);
  transform:translateX(-50%);border:6px solid transparent;border-top-color:var(--wood-900);
  opacity:0;visibility:hidden;pointer-events:none;z-index:60;transition:opacity .12s ease}
.mj-term:hover::after,.mj-term:focus-visible::after{opacity:1;visibility:visible;
  transform:translateX(-50%) translateY(0)}
.mj-term:hover::before,.mj-term:focus-visible::before{opacity:1;visibility:visible}

/* --- Controlling element / sensitivity / optimization -------------------- */
table.checks tr.controls td{box-shadow:inset 3px 0 0 var(--accent-700)}
.controls-badge{display:inline-block;margin-left:.5rem;font-size:.66rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;color:#fff;background:var(--accent-700);
  padding:.08rem .4rem;border-radius:6px;vertical-align:middle}
.controls-callout{border-radius:12px;padding:.9rem 1.1rem;margin:1.2rem 0 .4rem;
  background:#f3f4f6;border:1px solid var(--line);font-size:.95rem;color:var(--wood-900)}
.controls-callout.no{background:var(--no-bg);border-color:#fca5a5}
.controls-callout.ok{background:var(--ok-bg);border-color:#86efac}
.controls-hint{margin-top:.35rem;font-size:.82rem;color:var(--muted)}
.sens-intro{color:var(--muted);font-size:.86rem;margin:.2rem 0 1rem;max-width:60ch}

.lever-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;
  margin-bottom:1.1rem;overflow:hidden;box-shadow:var(--shadow)}
.lever-head{padding:.7rem 1.1rem;background:#f3f4f6;border-bottom:1px solid var(--line)}
.lever-head h3{margin:0;color:var(--wood-900);font-size:1rem}
.lever-steps{display:flex;flex-wrap:wrap;gap:.6rem;padding:.8rem 1.1rem;
  border-bottom:1px solid var(--line)}
.lever-step{flex:1 1 240px;display:flex;flex-direction:column;gap:.15rem;
  background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:.5rem .7rem}
.lever-step-k{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.lever-step-v{font-size:.9rem;font-weight:600;color:var(--wood-900)}
.lever-step-v.down{color:var(--ok)}
.lever-step-v.up{color:var(--accent-700)}
.lever-step-v.none{color:var(--muted);font-weight:400}

table.sweep,table.optimized{width:100%;border-collapse:collapse;font-size:.9rem}
table.sweep th,table.optimized th{background:var(--wood-900);color:#fff;text-align:left;
  padding:.5rem .8rem;font-size:.74rem;text-transform:uppercase;letter-spacing:.4px}
table.sweep td,table.optimized td{padding:.5rem .8rem;border-top:1px solid var(--line)}
table.sweep tr.no td{background:var(--no-bg)}
table.sweep tr.current td,table.optimized tr.current td{background:#f9fafb;font-weight:600}
table.optimized{background:var(--panel);border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow);margin-bottom:.6rem}
table.optimized td.rank{font-weight:700;color:var(--accent-700);width:2.2rem}
.cur-badge{display:inline-block;margin-left:.5rem;font-size:.62rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.4px;color:var(--wood-900);background:#e0e7ff;
  padding:.06rem .35rem;border-radius:5px;vertical-align:middle}
.opt-note{color:var(--muted);font-size:.84rem;margin:.2rem 0 1rem}

/* ---- beam loads editor ----------------------------------------------------- */
.loads-panel{background:#f9fafb;border:1px solid var(--line, #e0e7ff);border-radius:10px;
  padding: .8rem 1rem 1rem;margin:0 0 1.1rem}
.loads-head{display:flex;align-items:baseline;gap:.8rem;flex-wrap:wrap;margin-bottom:.55rem}
.loads-head h3{margin:0;font-size:.95rem}
.loads-hint{color:var(--muted);font-size:.78rem;max-width:46rem}
.loads-row{display:flex;align-items:center;gap:.45rem;margin:.3rem 0;flex-wrap:wrap}
.loads-row select,.loads-row input{padding:.32rem .45rem;border:1px solid #c7d2fe;
  border-radius:7px;background:#fff;font:inherit;font-size:.85rem}
.loads-mag{width:6.2rem}
.loads-x{width:4.6rem}
.loads-lbl{color:var(--muted);font-size:.8rem}
.loads-cls{font-weight:600}
.loads-cls.cls-D{color:#4f46e5}
.loads-cls.cls-L{color:#4f46e5}
.loads-cls.cls-S{color:#2563eb}
.loads-del{border:none;background:transparent;color:#b91c1c;font-size:.95rem;
  cursor:pointer;padding:.15rem .4rem;border-radius:6px}
.loads-del:hover{background:#fee2e2}
.loads-add{margin-top:.35rem}

/* ---- beam diagram: classified loads + V/M ---------------------------------- */
.dgm line.loadD{stroke:#4f46e5;stroke-width:2}
.dgm line.loadL{stroke:#4f46e5;stroke-width:2}
.dgm line.loadS{stroke:#2563eb;stroke-width:2}
.dgm rect.udl{stroke:none}
.dgm rect.udlD{fill:rgba(124,95,63,.16)}
.dgm rect.udlL{fill:rgba(194,65,12,.13)}
.dgm rect.udlS{fill:rgba(37,99,235,.12)}
.dgm text.lblD{fill:#4f46e5;font-size:11px;font-weight:700}
.dgm text.lblL{fill:#4f46e5;font-size:11px;font-weight:700}
.dgm text.lblS{fill:#2563eb;font-size:11px;font-weight:700}
.dgm polyline.vmline{fill:none;stroke:#4338ca;stroke-width:2}

/* ---- beam diagram hover readout -------------------------------------------- */
#diagram[data-module="beam"] .dgm{cursor:crosshair}
.dgm .hovcursor{stroke:#0f1729;stroke-width:1;stroke-dasharray:3 3;opacity:.55}
.dgm .hovdot{fill:#c2410c;stroke:#fff;stroke-width:1}
.dgm .hovtip{fill:#0f1729;fill-opacity:.92;stroke:#0f1729}
.dgm text.hovtiptitle{fill:#fff;font-size:11px;font-weight:700}
.dgm text.hovtiptext{fill:#e7e2d8;font-size:11px}

/* ---- limit-states summary table -------------------------------------------- */
table.limitstates{width:100%;border-collapse:collapse;margin:.4rem 0 1.2rem;font-size:.88rem}
table.limitstates th{background:var(--wood-900,#0f1729);color:#eef2ff;text-align:left;
  padding:.45rem .6rem;font-size:.74rem;text-transform:uppercase;letter-spacing:.4px}
table.limitstates td{padding:.42rem .6rem;border-bottom:1px solid #eef2ff}
table.limitstates tr.controls td{background:#eef2ff;
  border-top:2px solid #6366f1;border-bottom:2px solid #6366f1}

/* ---- beam end-connection cards ---------------------------------------------- */
.endconn-card{background:#fff;border:1px solid var(--line,#e0e7ff);border-radius:10px;
  padding:.75rem 1rem 1rem;margin:.7rem 0 1rem}
.endconn-head{display:flex;align-items:baseline;justify-content:space-between;
  gap:.8rem;flex-wrap:wrap}
.endconn-head h3{margin:.1rem 0 .3rem;font-size:.98rem}
.endconn-dem{color:var(--wood-900,#0f1729);font-size:.85rem;font-weight:600}
.endconn-note{color:var(--muted);font-size:.8rem;margin:.25rem 0 .5rem}
.endconn-note.warn{color:#4338ca;font-weight:600}
table.endconn{width:100%;border-collapse:collapse;font-size:.87rem}
table.endconn th{background:#eef2ff;color:#0f1729;text-align:left;padding:.4rem .55rem;
  font-size:.72rem;text-transform:uppercase;letter-spacing:.4px}
table.endconn td{padding:.4rem .55rem;border-bottom:1px solid #eef2ff}
table.endconn tr.no td{color:#7f1d1d}
table.endconn tr.current td{background:#f9fafb}
.endconn-link{color:#4338ca;font-weight:600;text-decoration:none}
.endconn-link:hover{text-decoration:underline}

/* ---- shear wall auto-pier diagram ------------------------------------------ */
.dgm rect.wallbg{fill:#f3f4f6;stroke:#a5b4fc;stroke-width:1}
.dgm rect.pierx{fill:url(#hatch);opacity:.45;stroke:#b91c1c;stroke-width:1;stroke-dasharray:4 3}
.dgm path.pierx{fill:#4f46e5;opacity:.16;stroke:#b91c1c;stroke-width:1.2;stroke-dasharray:4 3}
.dgm circle.rebar{fill:#1f2937;stroke:#0b0f14;stroke-width:.5}
.dgm line.rebarln{stroke:#1f2937;stroke-width:1.5}
.dgm text.rebarlbl{fill:#1f2937;font-size:9px;font-weight:700}
.dgm .channel{fill:none;stroke:#334155;stroke-width:2}
.dgm rect.water,.dgm .water{fill:#7fc7dc;opacity:.45;stroke:none}
.dgm text.noteX{fill:#b91c1c;font-size:11px;font-weight:700}
.openings-actions{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap;margin-top:.4rem}
.auto-piers{font-size:.82rem;color:var(--wood-900,#0f1729);display:flex;align-items:center;gap:.4rem}

/* ---- method economy comparison ---------------------------------------------- */
.method-compare{background:#fff;border:1px solid var(--line,#e0e7ff);border-radius:10px;
  padding:.75rem 1rem 1rem;margin:.7rem 0 1rem}
.method-compare h3{margin:.1rem 0 .4rem;font-size:.98rem}
.method-suggest{padding:.55rem .8rem;border-radius:8px;font-size:.9rem;font-weight:600;
  background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0;margin:.4rem 0 .6rem}
.method-suggest.warn{background:#eef2ff;color:#4338ca;border-color:#fed7aa}
table.methodcmp{width:100%;border-collapse:collapse;font-size:.87rem}
table.methodcmp th{background:#eef2ff;color:#0f1729;text-align:left;padding:.4rem .55rem;
  font-size:.72rem;text-transform:uppercase;letter-spacing:.4px}
table.methodcmp td{padding:.42rem .55rem;border-bottom:1px solid #eef2ff}
table.methodcmp tr.pick td{background:#f0fdf4}

/* ---- workflow input groups --------------------------------------------------- */
.input-group{background:#f9fafb;border:1px solid var(--line);border-radius:10px;
  padding:.85rem 1rem 1rem;margin:0 0 .9rem}
.input-group .group-title{margin:0 0 .7rem;font-size:.78rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.6px;color:var(--accent-700,#4338ca);
  border-bottom:1px solid var(--line);padding-bottom:.4rem}
.input-group .form-grid{gap:.8rem 1rem}
/* editors live inside their group card: drop their own frame, match fields */
.input-group .loads-panel{background:transparent;border:none;border-radius:0;
  padding:0;margin:0 0 .7rem}
.editor-sub{margin:0;font-size:.85rem;color:var(--ink)}
.loads-row select,.loads-row input{padding:.55rem .65rem;border:1px solid var(--line);
  border-radius:8px;font-size:.95rem;background:#fff;color:var(--ink)}
.loads-row select:focus,.loads-row input:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(194,65,12,.12)}

/* ---- anchorage drill-down links ----------------------------------------- */
.anchor-links{display:flex;flex-direction:column;gap:.4rem;margin-top:.3rem}
.anchor-links .endconn-link{font-size:.9rem}

/* ---- validation badge + assumptions/limitations panel ------------------- */
.module-head{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.val-badge{display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;
  background:#ecfdf5;border:1px solid #a7f3d0;border-radius:10px;padding:.45rem .7rem;
  color:#065f46;flex:none}
.val-badge:hover{background:#d1fae5}
.val-badge-tick{display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;background:#059669;color:#fff;font-weight:800;font-size:.8rem}
.val-badge-txt{display:flex;flex-direction:column;font-weight:700;font-size:.85rem;line-height:1.1}
.val-badge-txt small{font-weight:500;font-size:.68rem;color:#3f7d6e}
.val-panel{margin:1.2rem 0;border:1px solid var(--line,#e0e7ff);border-radius:12px;
  background:#f9fafb;overflow:hidden}
.val-panel>summary{list-style:none;cursor:pointer;display:flex;align-items:center;
  justify-content:space-between;gap:1rem;padding:.8rem 1rem;flex-wrap:wrap}
.val-panel>summary::-webkit-details-marker{display:none}
.val-panel-title{font-weight:700;color:var(--accent-700,#4338ca);font-size:.95rem}
.val-panel-title::before{content:"✓ ";color:#059669;font-weight:800}
.val-panel-pdf{font-size:.82rem;color:var(--accent,#4f46e5);text-decoration:none;font-weight:600}
.val-panel-pdf:hover{text-decoration:underline}
.val-panel-body{padding:0 1rem 1rem;border-top:1px solid var(--line,#e0e7ff)}
.val-panel-note{font-size:.88rem;color:var(--ink,#0f1729);margin:.7rem 0}
.val-cols{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin:.4rem 0}
.val-cols h4{margin:.2rem 0 .4rem;font-size:.78rem;text-transform:uppercase;
  letter-spacing:.5px;color:var(--accent-700,#4338ca)}
.val-cols ul{margin:0;padding-left:1.1rem}
.val-cols li{font-size:.83rem;color:var(--ink,#0f1729);margin-bottom:.3rem;line-height:1.35}
.val-panel-disc{font-size:.76rem;color:var(--muted,#374151);margin:.6rem 0 0;font-style:italic}
@media (max-width:640px){.val-cols{grid-template-columns:1fr}}

.icon-panel{background:linear-gradient(135deg,#3f6f7d,#6fa3b0)}

.icon-foundation{background:linear-gradient(135deg,#334155,#64748b)}

.icon-geotech{background:linear-gradient(135deg,#155e63,#0d9488)}

.icon-hydro{background:linear-gradient(135deg,#0e7490,#22b8cf)}

.icon-concrete{background:linear-gradient(135deg,#475569,#94a3b8)}

/* === techy discipline icons: distinct cool gradients + structural glyphs === */
.icon-beam{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M2%209h20M5%209l-2%203M19%209l2%203%22%20%2F%3E%3Cpath%20d%3D%22M3%206v2M21%206v2M9%204v4M15%204v4%22%20%2F%3E%3Cpath%20d%3D%22M8%205l1-1%201%201M14%205l1-1%201%201%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#312e81,#6366f1)!important}
.icon-column{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M12%203v18M7%203h10M6%2021h12%22%20%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#4338ca,#818cf8)!important}
.icon-diaphragm{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%2014l5-6h11l-5%206z%22%20%2F%3E%3Cpath%20d%3D%22M9%2011h6%22%20%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#4f46e5,#818cf8)!important}
.icon-shearwall{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%225%22%20y%3D%225%22%20width%3D%2214%22%20height%3D%2214%22%2F%3E%3Cpath%20d%3D%22M5%2019L19%205%22%20%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#4338ca,#818cf8)!important}
.icon-connection{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%224%22%20y%3D%227%22%20width%3D%227%22%20height%3D%2210%22%2F%3E%3Crect%20x%3D%2213%22%20y%3D%227%22%20width%3D%227%22%20height%3D%2210%22%2F%3E%3Ccircle%20cx%3D%2212%22%20cy%3D%2212%22%20r%3D%221.6%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#1e293b,#6366f1)!important}
.icon-wood{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%223%22%20y%3D%226%22%20width%3D%2218%22%20height%3D%223%22%2F%3E%3Crect%20x%3D%223%22%20y%3D%2211%22%20width%3D%2218%22%20height%3D%223%22%2F%3E%3Crect%20x%3D%223%22%20y%3D%2216%22%20width%3D%2218%22%20height%3D%222%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#1f2937,#6366f1)!important}
.icon-panel{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%223%22%20y%3D%227%22%20width%3D%2218%22%20height%3D%223%22%2F%3E%3Crect%20x%3D%223%22%20y%3D%2211%22%20width%3D%2218%22%20height%3D%222.5%22%2F%3E%3Crect%20x%3D%223%22%20y%3D%2214.5%22%20width%3D%2218%22%20height%3D%223%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#0369a1,#38bdf8)!important}
.icon-foundation{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M10%204h4v8h5v5H5v-5h5z%22%20%2F%3E%3Cpath%20d%3D%22M3%2017h18%22%20stroke-dasharray%3D%222%202%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#334155,#64748b)!important}
.icon-geotech{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M12%203v13%22%20%2F%3E%3Cpath%20d%3D%22M9%2016h6l-3%204z%22%20%2F%3E%3Cpath%20d%3D%22M3%209h18M3%2013h18%22%20stroke-dasharray%3D%222%202%22%20opacity%3D%22.7%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#0d9488,#5eead4)!important}
.icon-hydro{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%2012q3-5%206%200t6%200%206%200%22%20%2F%3E%3Cpath%20d%3D%22M3%2017q3-5%206%200t6%200%206%200%22%20opacity%3D%22.6%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#0e7490,#22d3ee)!important}
.icon-concrete{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%227%22%20y%3D%224%22%20width%3D%2210%22%20height%3D%2216%22%2F%3E%3Ccircle%20cx%3D%2210%22%20cy%3D%227%22%20r%3D%221%22%2F%3E%3Ccircle%20cx%3D%2214%22%20cy%3D%227%22%20r%3D%221%22%2F%3E%3Ccircle%20cx%3D%2210%22%20cy%3D%2217%22%20r%3D%221%22%2F%3E%3Ccircle%20cx%3D%2214%22%20cy%3D%2217%22%20r%3D%221%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#475569,#94a3b8)!important}
.icon-mech{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Ccircle%20cx%3D%2212%22%20cy%3D%2212%22%20r%3D%227%22%2F%3E%3Cpath%20d%3D%22M12%2012l4-2M12%2012l-1%204.4M12%2012l-3.5-2.5%22%2F%3E%3Ccircle%20cx%3D%2212%22%20cy%3D%2212%22%20r%3D%221.3%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#6d28d9,#a78bfa)!important}
.icon-hvac{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Ccircle%20cx%3D%2212%22%20cy%3D%2212%22%20r%3D%227%22%2F%3E%3Cpath%20d%3D%22M12%2012l4-2M12%2012l-1%204.4M12%2012l-3.5-2.5%22%2F%3E%3Ccircle%20cx%3D%2212%22%20cy%3D%2212%22%20r%3D%221.3%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#6d28d9,#a78bfa)!important}
.icon-calc{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%225%22%20y%3D%223%22%20width%3D%2214%22%20height%3D%2218%22%20rx%3D%222%22%2F%3E%3Cpath%20d%3D%22M8%207h8%22%20%2F%3E%3Cpath%20d%3D%22M8%2012h2M11%2012h2M14%2012h2M8%2016h2M11%2016h2M14%2016h2%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#1f2937,#4f46e5)!important}
.icon-project{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%2020V8l8-4%208%204v12%22%20%2F%3E%3Cpath%20d%3D%22M4%2020h16M9%2020v-5h6v5M9%2011h.01M15%2011h.01%22%20%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#4338ca,#818cf8)!important}

/* === value proposition band === */
.valueprops{position:relative;z-index:2;padding:3rem 1.5rem 1rem;max-width:1080px;margin:0 auto}
.vp-grid{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.vp-card{background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.85);
  border-radius:18px;padding:1.6rem 1.6rem 1.4rem;backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);box-shadow:0 10px 36px rgba(15,23,42,.10)}
.vp-card h3{margin:.9rem 0 .4rem;color:var(--wood-900);font-size:1.12rem}
.vp-card p{color:var(--muted);font-size:.94rem;margin:0;line-height:1.55}
.vp-ic{width:50px;height:50px;border-radius:13px;background-position:center;background-repeat:no-repeat;background-size:56%}
.vp-ic-sheet{background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Crect%20x%3D%224%22%20y%3D%223%22%20width%3D%2216%22%20height%3D%2218%22%20rx%3D%222%22%2F%3E%3Cpath%20d%3D%22M4%209h16M4%2014h16M9%203v18M15%203v18%22%2F%3E%3C%2Fsvg%3E");background-color:#4f46e5;box-shadow:0 6px 18px rgba(79,70,229,.35)}
.vp-ic-build{background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%2021h18%22%2F%3E%3Cpath%20d%3D%22M5%2021V8l5-3%205%203v13%22%2F%3E%3Cpath%20d%3D%22M14%2021V12h5v9%22%2F%3E%3Cpath%20d%3D%22M8%209h.01M8%2013h.01M11%209h.01M11%2013h.01%22%2F%3E%3C%2Fsvg%3E");background-color:#0d9488;box-shadow:0 6px 18px rgba(13,148,136,.35)}
.vp-ic-check{background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.7%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%207l3-4h10l3%204v12a2%202%200%200%201-2%202H6a2%202%200%200%201-2-2z%22%2F%3E%3Cpath%20d%3D%22M8.5%2012.5l2.5%202.5%204.5-5%22%2F%3E%3C%2Fsvg%3E");background-color:#6366f1;box-shadow:0 6px 18px rgba(99,102,241,.35)}

.vp-cta{display:inline-block;margin-top:.9rem;color:var(--accent);font-weight:700;font-size:.92rem}
.vp-cta:hover{color:var(--accent-700)}

/* soft dark scrim behind hero text so it reads over the lit skyline */
.hero-art-inner{position:relative}
.hero-art-inner::before{content:"";position:absolute;inset:-10% -14%;z-index:-1;
  background:radial-gradient(ellipse at center,rgba(8,12,28,.66) 0%,rgba(8,12,28,.40) 46%,transparent 72%);
  filter:blur(8px);pointer-events:none}

/* === path split: Engineering vs Contractor === */
.path-split{max-width:1080px;margin:0 auto;display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.path-card{position:relative;display:flex;gap:1.1rem;align-items:flex-start;
  background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.85);border-radius:18px;
  padding:1.6rem 1.7rem;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  box-shadow:0 10px 36px rgba(15,23,42,.10);transition:transform .12s,box-shadow .12s}
.path-card:hover{transform:translateY(-3px);box-shadow:0 16px 44px rgba(15,23,42,.16)}
.path-card h3{margin:.1rem 0 .35rem;color:var(--wood-900);font-size:1.35rem}
.path-card p{color:var(--muted);font-size:.95rem;margin:0 0 .7rem;line-height:1.5}
.path-card .go{color:var(--accent);font-weight:700;font-size:.92rem}
.path-ic{flex:0 0 auto;width:56px;height:56px;border-radius:14px;background-position:center;
  background-repeat:no-repeat;background-size:58%}
.path-ic-eng{background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M4%2020L14%204l6%2016z%22%2F%3E%3Cpath%20d%3D%22M4%2020h16%22%2F%3E%3Cpath%20d%3D%22M9.5%2012.5l5%200%22%2F%3E%3C%2Fsvg%3E");background-color:#4f46e5;box-shadow:0 6px 18px rgba(79,70,229,.35)}
.path-ic-ctr{background-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.6%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpath%20d%3D%22M3%2017h18v2H3z%22%2F%3E%3Cpath%20d%3D%22M5%2017a7%207%200%200%201%2014%200%22%2F%3E%3Cpath%20d%3D%22M12%204v3M9%205.2V7M15%205.2V7%22%2F%3E%3C%2Fsvg%3E");background-color:#0d9488;box-shadow:0 6px 18px rgba(13,148,136,.35)}
/* contractor nav accent */
.nav-group-contractor .nav-top{color:#5eead4}
.nav-group-contractor .nav-top:hover{background:rgba(94,234,212,.12);color:#99f6e4}

.icon-log{background:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%23ffffff%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Ccircle%20cx%3D%227%22%20cy%3D%228%22%20r%3D%223.2%22%2F%3E%3Ccircle%20cx%3D%2215%22%20cy%3D%228%22%20r%3D%223.2%22%2F%3E%3Ccircle%20cx%3D%2211%22%20cy%3D%2215%22%20r%3D%223.2%22%2F%3E%3Cpath%20d%3D%22M3.5%2020h17%22%2F%3E%3C%2Fsvg%3E") center/56% no-repeat,linear-gradient(135deg,#3f5138,#7c9a6a)!important}

/* === hydraulics reference tables + material auto-fill === */
.ref-panel{margin:1rem 0;border:1px solid var(--line);border-radius:12px;background:var(--panel);box-shadow:var(--shadow)}
.ref-panel>summary{cursor:pointer;padding:.8rem 1.1rem;font-weight:700;color:var(--wood-900);list-style:none;display:flex;align-items:center;gap:.5rem}
.ref-panel>summary::-webkit-details-marker{display:none}
.ref-panel>summary::before{content:"▸";color:var(--accent);transition:transform .15s}
.ref-panel[open]>summary::before{transform:rotate(90deg)}
.ref-panel-title{font-size:.98rem}
.ref-panel-body{padding:0 1.1rem 1rem}
.ref-table-wrap{overflow-x:auto}
.ref-table{width:100%;border-collapse:collapse;font-size:.9rem}
.ref-table th,.ref-table td{text-align:left;padding:.4rem .7rem;border-bottom:1px solid var(--line)}
.ref-table th{color:var(--muted);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.4px}
.ref-table td:not(:first-child){font-variant-numeric:tabular-nums;color:var(--wood-900);font-weight:600;white-space:nowrap}
.ref-panel-src{margin:.7rem 0 0;font-size:.8rem;color:var(--muted)}
input.auto-filled{background:#eef2ff;color:var(--wood-900);font-weight:700;cursor:not-allowed}

/* live-calculation indicator (replaces the Run button) */
.live-note{display:inline-flex;align-items:center;gap:.5rem;font-weight:700;font-size:.9rem;color:var(--accent)}
.live-note::before{content:"";width:9px;height:9px;border-radius:50%;background:#22c55e;
  box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:livepulse 2s ease-out infinite}
@keyframes livepulse{0%{box-shadow:0 0 0 0 rgba(34,197,94,.55)}70%{box-shadow:0 0 0 7px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
@media (prefers-reduced-motion:reduce){.live-note::before{animation:none}}

/* Bernoulli: the variable being solved for is locked & shows the computed value */
input.computed-field{background:#eef1f6;color:#8a93a6;cursor:not-allowed;border-style:dashed;font-weight:700}
.field.solving > label::after{content:"computed";margin-left:.45rem;padding:.06rem .4rem;border-radius:5px;
  font-size:.64rem;font-weight:800;letter-spacing:.4px;text-transform:uppercase;color:var(--accent);background:#eef2ff;vertical-align:middle}