/* Marinero — static SEO pages (knot guides, hub, rank test).
   Plain CSS, no framework: the text ships in the HTML source. */
:root{--night:#08131F;--night-2:#14505E;--linen:#F7F0E6;--linen-2:#F2E8DA;--ink:#2B2014;--ink-60:rgba(43,32,20,0.62);--ink-45:rgba(43,32,20,0.45);--teal:#18A8BA;--teal-dim:#0D7A8A;--terra:#C85A2A;--terra-dim:#A03820;--saffron:#E8A020;--border:rgba(43,32,20,0.12);--serif:'Playfair Display',Georgia,serif;--sans:'Inter',system-ui,-apple-system,sans-serif}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--linen);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--teal-dim)}a:hover{color:var(--terra)}
img{display:block;max-width:100%;height:auto}
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(247,240,230,0.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav .wrap{max-width:1080px;display:flex;align-items:center;gap:26px;height:62px}
.brand{font-family:var(--serif);font-weight:700;font-size:20px;font-style:italic;color:var(--teal);text-decoration:none}
.nav nav{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav nav a{font-size:14px;font-weight:500;color:var(--ink);text-decoration:none;opacity:.8;white-space:nowrap}
.nav nav a:hover{opacity:1;color:var(--teal-dim)}
.btn{display:inline-block;border:none;cursor:pointer;font-family:var(--sans);font-size:15px;font-weight:600;text-decoration:none;border-radius:10px;padding:13px 26px;background:var(--teal);color:#fff}
.btn:hover{background:var(--teal-dim);color:#fff}
.btn-sm{font-size:14px;padding:9px 18px}
.btn-terra{background:var(--terra)}.btn-terra:hover{background:var(--terra-dim)}
/* type */
h1{font-family:var(--serif);font-weight:900;font-size:clamp(30px,4.6vw,46px);line-height:1.1;letter-spacing:-0.01em}
h2{font-family:var(--serif);font-weight:700;font-size:clamp(22px,3vw,30px);line-height:1.2;color:var(--teal-dim)}
h3{font-family:var(--serif);font-weight:700;font-size:19px;color:var(--teal-dim)}
p{text-wrap:pretty}
.lede{font-size:18px;color:var(--ink-60);margin-top:14px}
.tag{display:inline-block;font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--terra);background:rgba(200,90,42,.1);border-radius:6px;padding:6px 12px}
.crumb{font-size:13px;color:var(--ink-45);padding:26px 0 0}
.crumb a{color:var(--ink-45);text-decoration:none}.crumb a:hover{color:var(--terra)}
section{padding:40px 0}
.hero{padding:34px 0 8px}
/* knot pages */
.plate{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;margin:26px 0}
.steps{list-style:none;counter-reset:s;display:flex;flex-direction:column;gap:22px;margin:22px 0 0}
.steps li{counter-increment:s;display:grid;grid-template-columns:38px 1fr;gap:14px;align-items:start}
.steps li::before{content:counter(s);grid-row:span 2;width:34px;height:34px;border-radius:50%;background:var(--terra);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center}
.steps .st{font-size:16.5px;font-weight:600}
.steps .sd{grid-column:2;font-size:14.5px;color:var(--ink-60);margin-top:2px}
.steps figure{grid-column:2;margin-top:10px;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.phrase{font-family:var(--serif);font-style:italic;font-size:19px;color:var(--terra-dim);border-left:3px solid var(--terra);padding:6px 0 6px 16px;margin:26px 0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:22px 0}
.facts div{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 16px}
.facts dt{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-45);margin-bottom:4px}
.facts dd{font-size:14.5px;font-weight:500}
.mistakes{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:14px}
.mistakes li{padding-left:26px;position:relative;font-size:15px;color:var(--ink-60)}
.mistakes li::before{content:'✕';position:absolute;left:0;color:var(--terra);font-weight:700}
/* grids */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px 18px;text-decoration:none}
.card:hover{border-color:var(--teal)}
.card b{font-family:var(--serif);font-size:17px;color:var(--teal-dim)}
.card span{font-size:13.5px;color:var(--ink-60)}
.card img{border-radius:10px;margin-bottom:6px;background:var(--linen-2)}
/* cta band */
.cta{background:var(--linen-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center}
.cta h2{color:var(--teal-dim)}
.cta p{max-width:440px;margin:12px auto 22px;color:var(--ink-60)}
/* footer */
footer{background:var(--night);color:rgba(255,255,255,.3);padding:32px 24px;text-align:center;font-size:13px;margin-top:20px}
footer .links{display:flex;flex-wrap:wrap;gap:6px 20px;justify-content:center;margin-bottom:14px}
footer a{color:rgba(255,255,255,.5);text-decoration:none}
footer a:hover{color:var(--teal)}
footer .lang{display:flex;gap:14px;justify-content:center;margin-bottom:16px;font-size:12px}
@media(max-width:720px){.nav nav a.hide-sm{display:none}}

/* ── knots feature (spec §4B) ─────────────────────────────── */
.topband{display:grid;grid-template-columns:1.02fr .98fr;gap:36px;align-items:center;padding:30px 0 4px}
.topband .plate{margin:0}
@media(max-width:800px){.topband{grid-template-columns:1fr;gap:22px}}
.answer{font-size:17.5px;color:var(--ink-60);margin-top:14px}
.answer strong{color:var(--ink);font-weight:600}
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;margin:26px 0}
.strip div{padding:13px 16px;border-right:1px solid var(--border)}
.strip div:last-child{border-right:none}
.strip dt{font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-45);margin-bottom:3px}
.strip dd{font-size:14px;font-weight:500;line-height:1.4}
@media(max-width:760px){.strip{grid-template-columns:1fr 1fr}.strip div{border-bottom:1px solid var(--border)}.strip div:nth-child(2n){border-right:none}.strip div:nth-last-child(-n+2){border-bottom:none}}
/* stepper (progressive enhancement over ol.steps) */
.js .steps.enhanced{display:none}
.stepper{background:var(--linen-2);border:1px solid var(--border);border-radius:24px;padding:20px;margin:22px 0;touch-action:pan-y}
.stepper .stage{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;position:relative;aspect-ratio:1/1;width:min(100%,460px);margin-inline:auto;display:flex;align-items:center;justify-content:center}
.stepper .stage img{width:100%;height:100%;object-fit:contain}
.stepper .num{position:absolute;top:12px;left:12px;background:var(--terra);color:#fff;font-size:13px;font-weight:700;border-radius:999px;padding:4px 12px;letter-spacing:.02em}
.stepper .cap{min-height:78px;padding:16px 4px 2px}
.stepper .cap b{display:block;font-size:17px;font-weight:600;color:var(--ink)}
.stepper .cap span{display:block;font-size:14.5px;color:var(--ink-60);margin-top:4px}
.stepper .bar{display:flex;align-items:center;gap:12px;margin-top:12px}
.stepper .dots{display:flex;gap:7px;margin:0 auto}
.stepper .dots button{width:9px;height:9px;padding:0;border:none;border-radius:999px;background:rgba(43,32,20,.2);cursor:pointer}
.stepper .dots button[aria-current="true"]{background:var(--terra);width:24px}
.stepper .arw{width:42px;height:42px;border-radius:999px;border:1px solid var(--border);background:#fff;color:var(--ink);font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex:none}
.stepper .arw:hover:not(:disabled){border-color:var(--teal);color:var(--teal-dim)}
.stepper .arw:disabled{opacity:.35;cursor:default}
.stepper .swipe{text-align:center;font-size:12.5px;color:var(--ink-45);margin-top:10px}
@media(prefers-reduced-motion:no-preference){.stepper .stage img{transition:opacity .18s ease}}
/* do / don't */
.dodont{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
@media(max-width:700px){.dodont{grid-template-columns:1fr}}
.dodont > div{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px 18px}
.dodont h3{font-size:15px;font-family:var(--sans);font-weight:600;letter-spacing:.02em;margin-bottom:10px}
.dodont .do h3{color:var(--teal-dim)}.dodont .dont h3{color:var(--terra)}
.dodont ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.dodont li{padding-left:24px;position:relative;font-size:14.5px;color:var(--ink-60)}
.dodont .do li::before{content:'✓';position:absolute;left:0;color:var(--teal);font-weight:700}
.dodont .dont li::before{content:'✕';position:absolute;left:0;color:var(--terra);font-weight:700}
/* faq */
.faq{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.faq details{background:#fff;border:1px solid var(--border);border-radius:14px;padding:0 18px}
.faq summary{cursor:pointer;list-style:none;padding:15px 0;font-size:16px;font-weight:600;display:flex;gap:14px;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';margin-left:auto;color:var(--terra);font-weight:400;font-size:22px;line-height:1}
.faq details[open] summary::after{content:'−'}
.faq p{padding:0 0 16px;font-size:15px;color:var(--ink-60);max-width:62ch}
/* chooser */
.chooser{background:#fff;border:1px solid var(--border);border-radius:20px;padding:20px;margin-top:18px}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips button{font-family:var(--sans);font-size:14px;font-weight:500;color:var(--ink);background:var(--linen-2);border:1px solid var(--border);border-radius:999px;padding:9px 16px;cursor:pointer}
.chips button:hover{border-color:var(--teal);color:var(--teal-dim)}
.chips button[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:#fff}
.chooser .out{margin-top:18px;border-top:1px solid var(--border);padding-top:18px;display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center}
.chooser .out img{width:110px;border-radius:12px;background:var(--linen-2)}
.chooser .out b{font-family:var(--serif);font-size:20px;color:var(--teal-dim);display:block}
.chooser .out p{font-size:14.5px;color:var(--ink-60);margin:4px 0 8px}
.chooser .hint{font-size:14px;color:var(--ink-45);margin-top:16px}
.js .chooser-fallback{display:none}
.chooser-fallback li{margin-bottom:6px;font-size:15px;color:var(--ink-60)}
/* ── boat & wind tool (shared widget) ────────────────────── */
.bw{background:var(--linen-2);border:1px solid var(--border);border-radius:24px;padding:18px;margin:26px 0}
.bw-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.bw-tabs{display:flex;gap:6px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:4px}
.bw-tabs button{font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink-60);background:none;border:none;border-radius:999px;padding:8px 18px;cursor:pointer}
.bw-tabs button.on{background:var(--teal);color:#fff}
.bw-hint{font-size:13px;color:var(--ink-45)}
.bw-focus{display:flex;flex-wrap:wrap;gap:8px;margin:-4px 0 14px}
.bw-focus button{font-family:var(--sans);font-size:13.5px;font-weight:500;color:var(--ink-60);background:#fff;border:1px solid var(--border);border-radius:999px;padding:8px 15px;cursor:pointer}
.bw-focus button:hover{border-color:var(--teal);color:var(--teal-dim)}
.bw-focus button.on{background:rgba(24,168,186,.12);border-color:var(--teal);color:var(--teal-dim);font-weight:600}
.bw-stage{position:relative;aspect-ratio:1/1;background:#FBF6EC;border:1px solid var(--border);border-radius:18px;overflow:hidden}
.bw-stage svg{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
.bw-stage svg:focus{outline:2px solid var(--teal);outline-offset:-2px}
.bw-side{font-family:var(--sans);font-size:22px;font-weight:700;letter-spacing:.1em;text-anchor:middle}
.bw-wl{font-family:var(--sans);font-size:17px;font-weight:600;letter-spacing:.08em;text-anchor:middle}
.bw-grip-t{font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:.08em;text-anchor:middle}
.bw-arrow{cursor:grab}
.bw-read{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;margin-top:14px}
.bw-read > div{padding:12px 14px;border-right:1px solid var(--border)}
.bw-read > div:last-child{border-right:none}
.bw-read dt{font-size:10.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-45);margin-bottom:3px}
.bw-read dd{font-size:15px;font-weight:600;color:var(--teal-dim)}
@media(max-width:640px){.bw-read{grid-template-columns:1fr 1fr}.bw-read > div{border-bottom:1px solid var(--border)}.bw-read > div:nth-child(2n){border-right:none}.bw-read > div:nth-last-child(-n+2){border-bottom:none}}
.bw-cap{font-size:15px;color:var(--ink-60);margin-top:14px}
.bw-cap strong{color:var(--ink)}
.bw-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.bw-presets[hidden]{display:none}
.bw-presets button{font-family:var(--sans);font-size:13.5px;font-weight:500;color:var(--ink);background:#fff;border:1px solid var(--border);border-radius:999px;padding:8px 15px;cursor:pointer}
.bw-presets button:hover{border-color:var(--teal);color:var(--teal-dim)}
.bw-ch{margin-top:16px}
.bw-q{font-size:17px;font-weight:600;color:var(--ink)}
.bw-q span{display:block;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--terra);margin-bottom:6px}
.bw-opts{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}
.bw-read[hidden],.bw-opts[hidden]{display:none}
@media(max-width:520px){.bw-opts{grid-template-columns:1fr}}
.bw-opts button{font-family:var(--sans);font-size:15px;font-weight:500;text-align:left;color:var(--ink);background:#fff;border:1px solid var(--border);border-radius:12px;padding:13px 16px;cursor:pointer;min-height:50px}
.bw-opts button:hover:not(:disabled){border-color:var(--teal)}
.bw-opts button.right{background:rgba(24,168,186,.12);border-color:var(--teal);color:var(--teal-dim);font-weight:600}
.bw-opts button.wrong{background:rgba(200,90,42,.1);border-color:var(--terra);color:var(--terra-dim)}
.bw-fb{font-size:15px;color:var(--ink-60);margin-top:14px}
.bw-fb b{color:var(--ink)}
.bw-fb + .btn{margin-top:14px}
.bw-score{text-align:center;padding:8px 0}
.bw-score b{font-family:var(--serif);font-size:44px;color:var(--terra);display:block}
.bw-score p{font-size:15px;color:var(--ink-60);max-width:44ch;margin:8px auto 16px}
.bw-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
/* tools dropdown */
.drop{position:relative}
.drop > button{font-family:var(--sans);font-size:14px;font-weight:500;color:var(--ink);background:none;border:none;cursor:pointer;opacity:.8;padding:0}
.drop > button:hover{opacity:1;color:var(--teal-dim)}
.drop ul{position:absolute;top:26px;left:-14px;min-width:236px;list-style:none;background:#fff;border:1px solid var(--border);border-radius:14px;padding:8px;box-shadow:0 12px 30px rgba(43,32,20,.12);display:none;z-index:30}
.drop:hover ul,.drop:focus-within ul{display:block}
.drop li.hd{font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-45);padding:8px 12px 4px}
.drop li.sep{height:1px;background:var(--border);margin:6px 8px}
.drop li a{display:block;font-size:14px;color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:9px;white-space:nowrap}
.drop li a:hover{background:var(--linen-2);color:var(--teal-dim)}
/* ── glossary ─────────────────────────────────────────────── */
.gtools{position:sticky;top:62px;z-index:15;background:rgba(247,240,230,0.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:14px 0}
.gtools .wrap{display:flex;flex-direction:column;gap:10px}
.gsearch{position:relative;display:flex;gap:10px;align-items:center}
.gsearch input{flex:1;font-family:var(--sans);font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--border);border-radius:10px;padding:12px 15px}
.gsearch input:focus{outline:none;border-color:var(--teal)}
.gsearch .cnt{font-size:13px;color:var(--ink-45);white-space:nowrap}
.gcats{display:flex;flex-wrap:wrap;gap:7px}
.gcats button{font-family:var(--sans);font-size:13px;font-weight:500;color:var(--ink-60);background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px 13px;cursor:pointer}
.gcats button:hover{border-color:var(--teal);color:var(--teal-dim)}
.gcats button.on{background:var(--teal);border-color:var(--teal);color:#fff}
.galpha{display:flex;flex-wrap:wrap;gap:4px 10px}
.galpha a{font-size:13px;font-weight:600;color:var(--teal-dim);text-decoration:none}
.galpha a:hover{color:var(--terra)}
.gsec{padding:26px 0 0;scroll-margin-top:260px}
.gsec h2{font-size:26px;border-bottom:1px solid var(--border);padding-bottom:8px;scroll-margin-top:260px}
.glist{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
@media(max-width:760px){.glist{grid-template-columns:1fr}}
.gterm{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px 16px;scroll-margin-top:260px}
.gterm dt{font-family:var(--serif);font-weight:700;font-size:17px;color:var(--teal-dim);display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.gterm .cat{font-family:var(--sans);font-size:10px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--terra);background:rgba(200,90,42,.1);border-radius:5px;padding:3px 7px}
.gterm dd{font-size:14.5px;color:var(--ink-60);margin-top:5px}
.gterm dd a{font-weight:500}
.gnone{display:none;padding:30px 0;font-size:16px;color:var(--ink-60);max-width:760px;margin:0 auto;padding-left:24px;padding-right:24px}
.gnone.on{display:block}
.gsec[hidden]{display:none}
/* ── parts of a sailboat ─────────────────────────────────── */
.bp{background:var(--linen-2);border:1px solid var(--border);border-radius:24px;padding:18px;margin:26px 0}
.bp-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.bp-tabs{display:flex;gap:6px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:4px;flex-wrap:wrap}
.bp-tabs button{font-family:var(--sans);font-size:13.5px;font-weight:600;color:var(--ink-60);background:none;border:none;border-radius:999px;padding:8px 15px;cursor:pointer}
.bp-tabs button.on{background:var(--teal);color:#fff}
.bp-hint{font-size:13px;color:var(--ink-45)}
.bp-stage{background:#FBF6EC;border:1px solid var(--border);border-radius:18px;overflow:hidden;display:flex;justify-content:center;padding:8px}
.bp-view{position:relative;overflow:hidden;width:min(100%,560px);height:auto}
.bp-view.tall{width:auto;height:min(680px,76vh)}
.bp-img{position:absolute;max-width:none;object-fit:fill}
.bp-view svg{position:absolute;inset:0;width:100%;height:100%}
.bp-sh{cursor:pointer}
.bp-sh:focus{outline:none}
.bp-sh:focus-visible circle,.bp-sh:focus-visible path,.bp-sh:focus-visible rect{stroke:var(--teal);stroke-width:9}
.bp-detail{width:min(100%,460px);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:18px}
.bp-detail img{width:100%;height:100%;object-fit:contain}
.bp-read{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px 16px;margin-top:14px;min-height:86px}
.bp-read b{font-family:var(--serif);font-size:19px;color:var(--teal-dim);display:block}
.bp-read span{display:block;font-size:14.5px;color:var(--ink-60);margin-top:4px}
.bp-read a{display:inline-block;font-size:13.5px;font-weight:500;margin-top:8px}
.bp-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.bp-chips button{font-family:var(--sans);font-size:13px;font-weight:500;color:var(--ink);background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px 14px;cursor:pointer}
.bp-chips button:hover{border-color:var(--teal);color:var(--teal-dim)}
.bp-chips button.on{background:rgba(200,90,42,.12);border-color:var(--terra);color:var(--terra-dim);font-weight:600}
.pl{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
@media(max-width:760px){.pl{grid-template-columns:1fr}}
.pl li{background:#fff;border:1px solid var(--border);border-radius:14px;padding:13px 16px;scroll-margin-top:90px}
.pl b{font-family:var(--serif);font-size:17px;color:var(--teal-dim)}
.pl p{font-size:14.5px;color:var(--ink-60);margin-top:4px}
.pl a{font-size:13px;font-weight:500}
/* cta band variant */
.cta .row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn-ghost{background:transparent;color:var(--teal-dim);border:1px solid var(--teal)}
.btn-ghost:hover{background:rgba(24,168,186,.08);color:var(--teal-dim)}