:root{
  --paper:#fbfbf8; --paper2:#f3f3ec; --card:#ffffff; --rule:#e4e2d6;
  --ink:#1a1a2e; --soft:#5b5b6b; --faint:#8a8a96;
  --teal:#0d9488; --teal-deep:#0b7a70; --teal-wash:#e6f4f1;
  --amber:#b4791f; --green:#2f8f5b; --red:#c0492f;
  --serif:'Lora',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  line-height:1.68;font-size:17px;-webkit-font-smoothing:antialiased}
.tse-shell{max-width:980px;margin:0 auto;padding:0 24px}
a{color:var(--teal-deep);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--teal)}
h1,h2,h3{font-family:var(--serif);line-height:1.22;font-weight:600;color:var(--ink)}
h2{font-size:clamp(1.45rem,2.6vw,1.95rem);margin:0 0 .45em;letter-spacing:-.005em}
h3{font-size:1.18rem;margin:1.6em 0 .4em}
.tse-soft{color:var(--soft)}
.tse-band{padding:48px 0}
.tse-band + .tse-band{border-top:1px solid var(--rule)}
.tse-eyebrow{font-family:var(--sans);font-size:.74rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--teal-deep);margin-bottom:14px}
/* masthead */
.tse-top{position:sticky;top:0;z-index:50;background:rgba(251,251,248,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--rule)}
.tse-top-in{display:flex;align-items:center;justify-content:space-between;gap:20px;
  max-width:980px;margin:0 auto;padding:14px 24px}
.tse-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:600;
  font-size:1.06rem;color:var(--ink);text-decoration:none}
.tse-brand svg{display:block}
.tse-links{display:flex;gap:22px;list-style:none;margin:0;padding:0;font-size:.93rem}
.tse-links a{color:var(--soft);text-decoration:none}
.tse-links a:hover{color:var(--ink)}
.tse-go{background:var(--teal);color:#fff!important;padding:8px 15px;border-radius:6px;
  font-size:.86rem;font-weight:600;text-decoration:none!important}
.tse-go:hover{background:var(--teal-deep)}
.tse-burger{display:none;background:none;border:1px solid var(--rule);border-radius:6px;
  width:40px;height:36px;cursor:pointer;padding:0}
.tse-burger span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px}
.tse-drawer{display:none;flex-direction:column;background:var(--card);border-bottom:1px solid var(--rule)}
.tse-drawer.is-open{display:flex}
.tse-drawer a{padding:13px 24px;color:var(--ink);text-decoration:none;border-top:1px solid var(--rule);font-size:.98rem}
/* hero + lede */
.tse-hero{padding:62px 0 44px}
.tse-hero h1{font-size:clamp(2.05rem,4.6vw,3.05rem);margin:.2em 0 .3em;letter-spacing:-.015em}
.tse-lede{font-size:1.16rem;color:#33333f;max-width:62ch}
.tse-pills{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px;font-size:.85rem}
.tse-pill{background:var(--card);border:1px solid var(--rule);border-radius:20px;padding:6px 14px;color:var(--soft)}
.tse-pill b{color:var(--teal-deep);font-weight:600}
.tse-act{display:inline-block;margin-top:28px;background:var(--teal);color:#fff;font-weight:600;
  padding:12px 22px;border-radius:7px;text-decoration:none;font-size:.96rem}
.tse-act:hover{background:var(--teal-deep);color:#fff;text-decoration:none}
.tse-read{font-size:1.06rem;color:#2c2c3a;max-width:66ch}
/* slab + cards */
.tse-slab{background:var(--card);border:1px solid var(--rule);border-radius:14px;padding:26px 28px;margin:20px 0}
.tse-slab.tint{background:var(--teal-wash);border-color:#cfe7e2}
.tse-cols{display:grid;gap:18px}
@media(min-width:730px){.tse-cols.c3{grid-template-columns:repeat(3,1fr)}.tse-cols.c2{grid-template-columns:1fr 1fr}}
.tse-tile{background:var(--card);border:1px solid var(--rule);border-radius:12px;padding:22px}
.tse-tile h3{margin-top:0}
.tse-step-no{font-family:var(--serif);font-size:1.5rem;color:var(--teal);line-height:1}
.tse-kicker{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-deep)}
/* checklist marks */
ul.tse-marks{list-style:none;padding:0;margin:18px 0}
ul.tse-marks li{position:relative;padding:11px 0 11px 30px;border-bottom:1px solid var(--rule);color:#34343f}
ul.tse-marks li:before{content:"";position:absolute;left:4px;top:18px;width:10px;height:10px;
  border:2px solid var(--teal);border-radius:3px}
/* tables */
.tse-scroll{overflow-x:auto;margin:20px 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;min-width:500px}
caption{caption-side:top;text-align:left;font-size:.82rem;color:var(--faint);margin-bottom:8px}
th,td{padding:12px 14px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
th{font-family:var(--sans);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--soft);font-weight:600}
td .up{color:var(--green);font-weight:600;font-variant-numeric:tabular-nums}
tr.spot td{background:var(--teal-wash)}
/* breadcrumb */
.tse-trail{font-size:.82rem;color:var(--faint);padding:18px 0 0}
.tse-trail a{color:var(--soft);text-decoration:none}
.tse-trail a:hover{text-decoration:underline}
.tse-trail .div{margin:0 7px;opacity:.6}
/* prose helpers */
.tse-prose h3{color:var(--teal-deep)}
.tse-prose p{max-width:68ch}
.tse-aside{background:var(--paper2);border-left:3px solid var(--teal);border-radius:0 8px 8px 0;
  padding:14px 18px;margin:20px 0;font-size:.95rem;color:#3a3a47}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;background:var(--paper2);
  border:1px solid var(--rule);border-radius:4px;padding:1px 6px;color:var(--teal-deep);word-break:break-word}
.tse-verdict{font-size:1.12rem;color:#2c2c3a;max-width:66ch;margin:.4em 0 0}
/* worked walk-through box */
.tse-walk{background:var(--card);border:1px solid var(--rule);border-left:4px solid var(--amber);
  border-radius:0 12px 12px 0;padding:20px 22px;margin:22px 0}
.tse-walk .tse-kicker{color:var(--amber);margin-bottom:10px}
.tse-walk ol{margin:0;padding-left:22px}
.tse-walk ol li{padding:7px 0;color:#34343f}
.tse-walk ol li b{color:var(--ink)}
/* on-brand diagram frame */
figure.tse-fig{margin:26px 0;background:var(--card);border:1px solid var(--rule);border-radius:14px;padding:20px 20px 14px}
figure.tse-fig svg{display:block;width:100%;height:auto;max-width:780px;margin:0 auto}
figure.tse-fig figcaption{font-size:.84rem;color:var(--faint);text-align:center;margin-top:12px;max-width:62ch;margin-left:auto;margin-right:auto}
.dgm-card{fill:#ffffff;stroke:#cfe7e2;stroke-width:1.3}
.dgm-line{stroke:var(--teal);stroke-width:1.7;fill:none}
.dgm-title{font-family:'Lora',serif;font-size:12px;fill:var(--ink);font-weight:600}
.dgm-sub{font-family:'Inter',sans-serif;font-size:9.5px;fill:#5b5b6b}
.dgm-axis{font-family:'Inter',sans-serif;font-size:10px;fill:#8a8a96}
.dgm-yes{fill:#2f8f5b;font-family:'Inter',sans-serif;font-size:13px;font-weight:700}
.dgm-no{fill:#c0492f;font-family:'Inter',sans-serif;font-size:13px;font-weight:700}
/* keep-reading block */
.tse-next{margin:32px 0 0;border-top:1px solid var(--rule);padding-top:22px}
.tse-next .nx-hd{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-deep);margin-bottom:14px}
.tse-next .nx-grid{display:grid;gap:12px}
@media(min-width:620px){.tse-next .nx-grid{grid-template-columns:1fr 1fr}}
.tse-next a.lnk{display:block;border:1px solid var(--rule);border-radius:10px;padding:14px 16px;
  background:var(--card);color:var(--ink);text-decoration:none}
.tse-next a.lnk:hover{border-color:#cfe7e2;background:var(--teal-wash)}
.tse-next a.lnk b{display:block;color:var(--teal-deep);font-size:.96rem;margin-bottom:3px}
.tse-next a.lnk span{color:var(--soft);font-size:.85rem}
/* footer */
.tse-foot{background:var(--paper2);border-top:1px solid var(--rule);margin-top:40px;padding:44px 0 32px}
.tse-foot .ft-grid{display:grid;gap:24px}
@media(min-width:730px){.tse-foot .ft-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.tse-foot a{color:var(--soft);text-decoration:none;display:block;padding:3px 0;font-size:.92rem}
.tse-foot a:hover{color:var(--teal-deep)}
.tse-foot .ft-hd{font-family:var(--serif);font-size:.96rem;color:var(--ink);margin-bottom:10px}
.tse-fine{color:var(--faint);font-size:.82rem;margin-top:26px;border-top:1px solid var(--rule);padding-top:18px;max-width:none}
@media(max-width:729px){.tse-links,.tse-top .tse-go{display:none}.tse-burger{display:block}table{min-width:0}th,td{padding:9px 10px}}

/* focus + motion + small-screen polish */
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;transition-duration:.01ms!important}}