/* =========================================================
   Design Notes: section styles
   Loads after ../styles.css and reuses its tokens (paper, ink,
   accent, line, serif, sans, mono). The --ui-* values below are
   a small demo palette, used only inside example interfaces.
   ========================================================= */

.dn{
  --ui-surface:#fff;
  --ui-danger:#b42318;
  --ui-danger-soft:#fbeae8;
  --ui-success:#2b6a4c;
  --ui-success-soft:#e4f0e9;
  --ui-warn:#8f5407;
  --ui-warn-soft:#f6ecd9;
  --ui-shadow-1:0 1px 2px rgba(26,25,22,.06),0 1px 1px rgba(26,25,22,.04);
  --ui-shadow-2:0 6px 18px -2px rgba(26,25,22,.10);
  --ui-shadow-3:0 18px 40px -10px rgba(26,25,22,.18);
  --ui-border-strong:#86827a;
  --dn-col:66ch;
}
/* Small text in this section needs 4.5:1. The site's --ink-faint (#86827a) reaches
   about 3.4:1 on --paper, so content areas here use a darker faint ink. */
.dn .phero,.dn .dn-layout,.dn section{--ink-faint:#6b675f;}

/* focus: one visible treatment for every interactive element in the section */
.dn a:focus-visible,.dn button:focus-visible,.dn summary:focus-visible,.dn input:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* plain <nav> elements: undo the site header styles from styles.css */
nav.dn-crumbs,nav.dn-toc{position:static;z-index:auto;background:none;backdrop-filter:none;-webkit-backdrop-filter:none;border:0;}

/* ---------- index hero ---------- */
.dn-hero h1{max-width:17ch;}
.dn-hero .lede{max-width:54ch;}
.dn-hero-meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:28px;font-family:var(--mono);font-size:11.5px;letter-spacing:.03em;color:var(--ink-faint);}
.dn-hero-meta b{color:var(--ink-soft);font-weight:500;}

/* ---------- article grid + cards ---------- */
.dn-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
@media(max-width:960px){.dn-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:640px){.dn-grid{grid-template-columns:1fr;}}

.dn-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:12px;background:var(--paper);
  overflow:hidden;text-decoration:none;color:inherit;transition:border-color .2s,transform .2s,box-shadow .2s;}
.dn-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 24px 46px -32px rgba(31,79,209,.36);}
.dn .dn-card:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:12px;}
.dn-cover{aspect-ratio:4/3;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden;}
.dn-cover svg{display:block;width:100%;height:100%;transition:transform .5s ease;}
.dn-card:hover .dn-cover svg{transform:scale(1.025);}
.dn-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.dn-meta{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;}
.dn-meta .n{color:var(--ink-faint);}
.dn-meta .t{margin-left:auto;color:var(--ink-faint);letter-spacing:.04em;text-transform:none;}
.dn-card-title{font-family:var(--serif);font-size:22px;font-weight:600;line-height:1.15;letter-spacing:-.005em;margin-bottom:10px;}
.dn-card-desc{font-size:14.5px;color:var(--ink-soft);line-height:1.5;margin-bottom:18px;}
.dn-go{margin-top:auto;font-family:var(--mono);font-size:11.5px;color:var(--accent);letter-spacing:.03em;}
.dn-go span{display:inline-block;transition:transform .2s;}
.dn-card:hover .dn-go span{transform:translateX(4px);}

/* small related-note cards */
.dn-related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
@media(max-width:640px){.dn-related-grid{grid-template-columns:1fr;}}
.dn-card.row{flex-direction:row;}
.dn-card.row .dn-cover{flex:0 0 40%;aspect-ratio:auto;border-bottom:0;border-right:1px solid var(--line);}
.dn-card.row .dn-cover svg{height:100%;}
.dn-card.row .dn-card-title{font-size:19px;}
@media(max-width:420px){.dn-card.row{flex-direction:column;}.dn-card.row .dn-cover{aspect-ratio:4/3;border-right:0;border-bottom:1px solid var(--line);}}

/* principles strip on the index */
.dn-ethos{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:11px;overflow:hidden;}
@media(max-width:760px){.dn-ethos{grid-template-columns:1fr;}}
.dn-ethos > div{background:var(--paper);padding:22px 24px;}
.dn-ethos .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:9px;}
.dn-ethos p{font-size:14.5px;color:var(--ink-soft);line-height:1.5;}

/* ---------- article header ---------- */
.dn-crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;font-family:var(--mono);font-size:12px;color:var(--ink-faint);margin-bottom:22px;}
.dn-crumbs li+li::before{content:"/";margin-right:8px;color:var(--line);}
.dn-crumbs a{color:var(--accent);text-decoration:none;}
.dn-crumbs a:hover{text-decoration:underline;}
.dn-art-hero h1{max-width:20ch;}
.dn-art-hero .lede{max-width:58ch;}
.dn-byline{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:26px;padding-top:16px;border-top:1px dotted var(--line);max-width:58ch;
  font-family:var(--mono);font-size:11.5px;color:var(--ink-faint);letter-spacing:.03em;}
.dn-byline b{color:var(--ink-soft);font-weight:500;}
.dn-hero-cover{margin:40px 0 0;background:var(--paper-2);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  display:flex;justify-content:center;height:clamp(240px,40vw,440px);}
.dn-hero-cover svg{height:100%;width:auto;max-width:100%;display:block;}

/* ---------- article layout ---------- */
.dn-layout{display:grid;grid-template-columns:196px minmax(0,1fr);gap:56px;padding-top:56px;padding-bottom:40px;align-items:start;}
@media(max-width:980px){.dn-layout{grid-template-columns:1fr;gap:0;padding-top:34px;}}
.dn-aside{position:sticky;top:84px;}
@media(max-width:980px){.dn-aside{display:none;}}
.dn-toc-h{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:12px;}
.dn-toc ol{list-style:none;border-left:1px solid var(--line);}
.dn-toc li a{display:flex;gap:9px;padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;
  font-size:13.5px;line-height:1.35;color:var(--ink-faint);text-decoration:none;transition:color .2s,border-color .2s;}
.dn-toc li a span{font-family:var(--mono);font-size:11px;padding-top:1px;}
.dn-toc li a:hover{color:var(--ink);}
.dn-toc li a[aria-current="true"]{color:var(--ink);border-left-color:var(--accent);}
.dn-toc-back{display:inline-block;margin-top:22px;font-family:var(--mono);font-size:11.5px;color:var(--accent);text-decoration:none;}

/* mobile table of contents */
.dn-toc-m{display:none;border:1px solid var(--line);border-radius:10px;background:var(--paper);margin-bottom:34px;}
@media(max-width:980px){.dn-toc-m{display:block;}}
.dn-toc-m summary{cursor:pointer;list-style:none;padding:14px 18px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);display:flex;justify-content:space-between;}
.dn-toc-m summary::-webkit-details-marker{display:none;}
.dn-toc-m summary::after{content:"+";color:var(--accent);}
.dn-toc-m[open] summary::after{content:"\2013";}
.dn-toc-m ol{list-style:none;padding:0 18px 12px;}
.dn-toc-m li a{display:flex;gap:10px;padding:9px 0;border-top:1px dotted var(--line);font-size:15px;color:var(--ink-soft);text-decoration:none;}
.dn-toc-m li a span{font-family:var(--mono);font-size:12px;color:var(--accent);padding-top:2px;}

/* ---------- article body ---------- */
.dn-article{min-width:0;}
.dn-article > .dn-intro{margin-top:0;}
.dn-article > .dn-intro p{font-size:20px;line-height:1.6;color:var(--ink);max-width:var(--dn-col);}
.dn-article > .dn-intro p+p{margin-top:16px;}
@media(max-width:640px){.dn-article > .dn-intro p{font-size:18px;}.dn-sec > p,.dn-sec > ul,.dn-sec > ol{font-size:17px;}}
section.dn-sec{padding:0;border-top:0;margin-top:80px;scroll-margin-top:84px;}
.dn-sec h2{font-family:var(--serif);font-size:clamp(26px,3.2vw,34px);font-weight:500;line-height:1.1;letter-spacing:-.012em;
  margin-bottom:20px;max-width:26ch;}
.dn-sec h2 .dn-sec-n{display:block;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--accent);margin-bottom:12px;}
.dn-sec h3{font-family:var(--serif);font-size:21px;font-weight:600;line-height:1.2;margin:38px 0 12px;max-width:var(--dn-col);}
.dn-sec > p,.dn-sec > ul,.dn-sec > ol{font-size:18px;line-height:1.65;color:var(--ink-soft);max-width:var(--dn-col);}
.dn-sec > * + p,.dn-sec > p + ul,.dn-sec > p + ol{margin-top:16px;}
.dn-sec > p strong,.dn-sec > ul strong,.dn-sec > ol strong{color:var(--ink);font-weight:600;}
.dn-sec > p a,.dn-sec > ul a,.dn-sec > ol a,.dn-intro a{color:var(--accent);text-underline-offset:3px;}
.dn-sec ul,.dn-sec ol{padding-left:0;list-style:none;}
.dn-sec > ul > li{position:relative;padding:5px 0 5px 22px;}
.dn-sec > ul > li::before{content:"";position:absolute;left:2px;top:17px;width:6px;height:6px;border-radius:50%;background:var(--accent);}
.dn-sec > ol{counter-reset:dn-ol;}
.dn-sec > ol > li{position:relative;padding:5px 0 5px 34px;counter-increment:dn-ol;}
.dn-sec > ol > li::before{content:counter(dn-ol,decimal-leading-zero);position:absolute;left:0;top:9px;font-family:var(--mono);font-size:12px;color:var(--accent);}
.dn-sec > .dn-fig + ul,.dn-sec > .dn-fig + ol,.dn-sec > .dn-tablewrap + ul,.dn-sec > .callout + ul,.dn-sec > .dn-fig + p,.dn-sec > .dn-tablewrap + p,.dn-sec > .callout + p,.dn-sec > .dn-compare + p,.dn-sec > .dn-ll + p,.dn-sec > .dn-checklist + p,.dn-sec > .dn-code-cap + p{margin-top:28px;}
.dn-sec > .dn-code + p{margin-top:16px;}
.dn-sec code,.dn-intro code{font-family:var(--mono);font-size:.84em;background:var(--paper-2);border:1px solid var(--line);border-radius:4px;padding:1px 5px;color:var(--ink);word-break:break-word;}
.dn-sec .dn-math{font-family:var(--mono);font-size:15px;color:var(--ink);background:var(--paper-2);border:1px solid var(--line);
  border-radius:8px;padding:12px 16px;display:inline-block;margin-top:16px;}

/* callouts: extends .callout from styles.css */
.dn .callout{margin:34px 0 0;max-width:calc(var(--dn-col) + 64px);border-radius:0 10px 10px 0;}
.dn .callout p{font-size:16.5px;}
.dn .callout p+p{margin-top:10px;}
.dn .callout.caveat{border-left-color:var(--ink-faint);background:linear-gradient(90deg,rgba(26,25,22,.045),transparent);}
.dn .callout.caveat .k{color:var(--ink-soft);}

/* lesson / limits pair */
.dn-ll{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:11px;overflow:hidden;margin-top:28px;}
@media(max-width:640px){.dn-ll{grid-template-columns:1fr;}}
.dn-ll > div{background:var(--paper);padding:20px 22px;}
.dn-ll .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:8px;}
.dn-ll .k.m{color:var(--ink-faint);}
.dn-ll p{font-size:15px;line-height:1.55;color:var(--ink-soft);}
.dn-ll p strong{color:var(--ink);font-weight:600;}

/* checklist */
.dn-checklist{border:1px solid var(--line);border-radius:12px;background:var(--paper);margin-top:26px;max-width:calc(var(--dn-col) + 80px);}
.dn-checklist .h{padding:16px 22px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);}
.dn-checklist ul{list-style:none;padding:6px 22px 10px;}
.dn-checklist li{position:relative;font-size:15.5px;line-height:1.5;color:var(--ink-soft);padding:11px 0 11px 32px;border-bottom:1px dotted var(--line);}
.dn-checklist li:last-child{border-bottom:0;}
.dn-checklist li::before{content:"";position:absolute;left:0;top:13px;width:16px;height:16px;border-radius:4px;border:1.5px solid var(--accent);box-sizing:border-box;}
.dn-checklist li strong{color:var(--ink);font-weight:600;}

/* code + tables */
.dn-code{margin-top:22px;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 10px 10px 0;
  padding:18px 20px;overflow-x:auto;font-family:var(--mono);font-size:13px;line-height:1.7;max-width:100%;white-space:pre;}
.dn-code .c{color:var(--ink-faint);}
.dn-code .k{color:var(--accent);}
.dn-code .s{color:var(--accent-deep);}
.dn-sec > p.dn-code-cap,.dn-code-cap{font-family:var(--mono);font-size:11px;line-height:1.5;color:var(--ink-faint);margin-top:10px;letter-spacing:.03em;}
.dn-tablewrap{overflow-x:auto;margin-top:24px;border:1px solid var(--line);border-radius:10px;background:var(--paper);}
.dn-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px;}
.dn-table th{text-align:left;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);font-weight:500;
  padding:12px 16px;border-bottom:1px solid var(--line);background:var(--paper-2);}
.dn-table td{padding:12px 16px;border-bottom:1px dotted var(--line);color:var(--ink-soft);vertical-align:top;line-height:1.45;}
.dn-table tr:last-child td{border-bottom:0;}
.dn-table td code{font-size:12.5px;white-space:nowrap;}
.dn-table td:first-child{color:var(--ink);font-weight:500;}

/* ---------- figures ---------- */
.dn-fig{margin:34px 0 0;}
.dn-stage{background:var(--paper-2);border:1px solid var(--line);border-radius:14px;padding:clamp(16px,3.4vw,36px);overflow:hidden;}
.dn-stage.scroll{overflow-x:auto;}
.dn-stage.flush{padding:0;}
.dn-fig figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.03em;color:var(--ink-faint);margin-top:12px;line-height:1.6;max-width:96ch;}
.dn-fig figcaption b{color:var(--ink-soft);font-weight:500;}
.dn-stage > svg,.dn-pane-box > svg{display:block;width:100%;height:auto;}
.dn-stage.scroll > svg{min-width:640px;}
@media(max-width:680px){.dn-stage.scroll + figcaption::after{content:" Swipe to see the full figure.";}}

/* weak vs refined comparisons */
.dn-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media(max-width:700px){.dn-compare{grid-template-columns:1fr;}}
.dn-pane{display:flex;flex-direction:column;min-width:0;}
.dn-pane-label{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px;color:var(--ink-faint);}
.dn-pane-label::before{content:"";width:16px;height:16px;border-radius:50%;flex:0 0 16px;border:1.5px solid currentColor;
  background:no-repeat center/10px 10px;}
.dn-pane.weak .dn-pane-label::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 2l6 6M8 2l-6 6' stroke='%2386827a' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");}
.dn-pane.good .dn-pane-label{color:var(--accent);}
.dn-pane.good .dn-pane-label::before{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M1.8 5.2l2.1 2.1 4.3-4.6' fill='none' stroke='%231f4fd1' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");}
.dn-pane-box{flex:1;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:clamp(14px,2.6vw,24px);display:flex;align-items:center;justify-content:center;min-height:180px;}
.dn-pane.good .dn-pane-box{border-color:rgba(31,79,209,.35);}
.dn-pane-note{font-size:13.5px;color:var(--ink-soft);line-height:1.5;margin-top:10px;}
.dn-pane-note b{color:var(--ink);font-weight:600;}

/* ---------- svg diagram classes (site palette) ---------- */
.dnx{font-family:var(--sans);}
.dnx text{fill:var(--ink);font-size:13px;}
.dnx .mono{font-family:var(--mono);}
.dnx .serif{font-family:var(--serif);}
.dnx .sm{font-size:11px;}
.dnx .xs{font-size:9.5px;}
.dnx .lg{font-size:16px;}
.dnx .xl{font-size:22px;}
.dnx .b{font-weight:600;}
.dnx .up{letter-spacing:.1em;}
.dnx .mid{text-anchor:middle;}
.dnx .end{text-anchor:end;}
.dnx .ink{fill:var(--ink);}
.dnx .soft{fill:var(--ink-soft);}
.dnx .faint{fill:var(--ink-faint);}
.dnx .acc{fill:var(--accent);}
.dnx .accd{fill:var(--accent-deep);}
.dnx .paper{fill:var(--paper);}
.dnx .paper2{fill:var(--paper-2);}
.dnx .white{fill:var(--ui-surface);}
.dnx .linef{fill:var(--line);}
.dnx .tint{fill:rgba(31,79,209,.12);}
.dnx .tint2{fill:rgba(31,79,209,.06);}
.dnx .danger{fill:var(--ui-danger);}
.dnx .danger-soft{fill:var(--ui-danger-soft);}
.dnx .ok{fill:var(--ui-success);}
.dnx .ok-soft{fill:var(--ui-success-soft);}
.dnx .warn{fill:var(--ui-warn);}
.dnx .warn-soft{fill:var(--ui-warn-soft);}
.dnx .st{stroke:var(--line);stroke-width:1;fill:none;}
.dnx .st-f{stroke:var(--ink-faint);stroke-width:1.25;fill:none;}
.dnx .st-ink{stroke:var(--ink);stroke-width:1.5;fill:none;}
.dnx .st-acc{stroke:var(--accent);stroke-width:1.5;fill:none;}
.dnx .st-acc2{stroke:var(--accent);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.dnx .dash{stroke-dasharray:3 4;}
.dnx .card{fill:var(--ui-surface);stroke:var(--line);stroke-width:1;}
.dnx .card-acc{fill:var(--ui-surface);stroke:var(--accent);stroke-width:1.5;}
.dnx .shadow{filter:drop-shadow(0 6px 10px rgba(26,25,22,.08));}

/* ---------- example interface kit (HTML mockups) ---------- */
.ui{font-family:var(--sans);color:var(--ink);font-size:13px;line-height:1.4;}
.ui-win{background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--ui-shadow-2);overflow:hidden;}
.ui-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);}
.ui-bar .ttl{font-weight:600;font-size:14px;}
.ui-bar .sp{flex:1;}
.ui-pad{padding:16px;}
.ui-lbl{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);}
.ui-btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--sans);font-size:12.5px;font-weight:500;border-radius:7px;padding:7px 12px;border:1px solid transparent;white-space:nowrap;line-height:1.2;}
.ui-btn.pri{background:var(--accent);color:#fff;}
.ui-btn.sec{background:var(--ui-surface);border-color:var(--line);color:var(--ink);}
.ui-btn.ghost{color:var(--accent);padding-left:4px;padding-right:4px;}
.ui-btn.danger{background:var(--ui-danger);color:#fff;}
.ui-chip{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:500;border-radius:20px;padding:3px 9px;white-space:nowrap;}
.ui-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;}
.ui-chip.ok{background:var(--ui-success-soft);color:var(--ui-success);}
.ui-chip.warn{background:var(--ui-warn-soft);color:var(--ui-warn);}
.ui-chip.bad{background:var(--ui-danger-soft);color:var(--ui-danger);}
.ui-chip.neutral{background:var(--paper-2);color:var(--ink-soft);}
.ui-chip.plain::before{display:none;}
.ui-up{color:var(--ui-success);font-weight:500;}
.ui-down{color:var(--ui-danger);font-weight:500;}
.ui-muted{color:var(--ink-faint);}
.ui-skel{display:block;height:7px;border-radius:4px;background:var(--line);}
.ui-skel.d{background:var(--ink-faint);opacity:.55;}
.ui-skel.k{background:var(--ink);}
.ui-skel.a{background:var(--accent);}

/* ---------- note 01: intelligent design systems ---------- */
.ids-lib{display:grid;grid-template-columns:repeat(3,auto);gap:14px 16px;align-items:center;justify-items:start;}
.ids-input{display:block;width:88px;height:30px;border:1px solid var(--line);border-radius:7px;background:var(--ui-surface);}
.ids-toggle{display:block;width:34px;height:20px;border-radius:10px;background:var(--accent);position:relative;}
.ids-toggle::after{content:"";position:absolute;right:3px;top:3px;width:14px;height:14px;border-radius:50%;background:var(--ui-surface);}
.ids-layers{list-style:none;width:100%;counter-reset:l;}
.ids-layers li{counter-increment:l;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--ui-surface);font-size:14px;}
.ids-layers li + li{margin-top:6px;}
.ids-layers li::before{content:counter(l,decimal-leading-zero);font-family:var(--mono);font-size:11px;color:var(--accent);}
.ids-layers li b{font-weight:600;color:var(--ink);}
.ids-layers li span{font-size:12.5px;color:var(--ink-faint);}
.ids-name{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:center;gap:6px 2px;padding:10px 0;}
.ids-name div{display:flex;flex-direction:column;align-items:center;gap:8px;}
.ids-name code{font-family:var(--mono);font-size:clamp(15px,2.4vw,22px);color:var(--ink);background:var(--ui-surface);border:1px solid var(--line);border-radius:8px;padding:8px 12px;}
.ids-name .a code{border-color:var(--accent);color:var(--accent-deep);}
.ids-name span{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);}
.ids-name i{font-family:var(--mono);font-style:normal;font-size:22px;color:var(--ink-faint);padding-top:8px;}
.ids-contract{display:grid;grid-template-columns:0.9fr 1.1fr;gap:18px;}
@media(max-width:700px){.ids-contract{grid-template-columns:1fr;}}
.ids-contract > div{background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px;}
.ids-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.ids-contract-spec dl{display:grid;grid-template-columns:auto 1fr;gap:9px 16px;margin-top:14px;font-size:13.5px;line-height:1.45;}
.ids-contract-spec dt{font-family:var(--mono);font-size:12px;color:var(--accent);padding-top:1px;}
.ids-contract-spec dd{color:var(--ink-soft);}
.ids-contract-spec dd code{font-size:11.5px;}
.ids-worked{display:grid;grid-template-columns:1.05fr 0.95fr;gap:26px;align-items:center;}
@media(max-width:760px){.ids-worked{grid-template-columns:1fr;}}
.ids-dialog{position:relative;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--ui-shadow-3);padding:24px;max-width:400px;width:100%;justify-self:center;}
.ids-dialog-h{font-size:17px;font-weight:600;display:flex;align-items:center;gap:8px;}
.ids-dialog-b{font-size:13.5px;color:var(--ink-soft);line-height:1.55;margin-top:10px;}
.ids-dialog-b b{color:var(--ink);font-weight:600;}
.ids-warn{display:inline-flex;align-items:center;gap:6px;color:var(--ui-danger);font-weight:500;margin-top:4px;}
.ids-dialog-f{display:flex;justify-content:flex-end;gap:8px;margin-top:20px;}
.ids-mk{display:inline-flex;align-items:center;justify-content:center;flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10px;font-weight:500;}
.ids-mk.on-danger{background:#fff;color:var(--ui-danger);}
.ids-mk-pad{position:absolute;left:-9px;bottom:-9px;}
.ids-map{list-style:none;display:grid;gap:10px;}
.ids-map li{display:flex;gap:12px;align-items:flex-start;background:var(--ui-surface);border:1px solid var(--line);border-radius:9px;padding:11px 14px;}
.ids-map li .ids-mk{margin-top:2px;}
.ids-map code{font-family:var(--mono);font-size:12.5px;color:var(--ink);background:none;border:0;padding:0;}
.ids-map small{display:block;font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:3px;}

/* ---------- note 02: dashboards ---------- */
.db{background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--ui-shadow-2);padding:18px;}
.db-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;}
.db-title{font-size:17px;font-weight:600;}
.db-head-actions{display:flex;gap:8px;flex-wrap:wrap;}
.db-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;}
@media(max-width:820px){.db-kpis{grid-template-columns:repeat(2,minmax(0,1fr));}}
.db-kpi{background:var(--ui-surface);border:1px solid var(--line);border-radius:10px;padding:13px 14px;}
.db-kpi.warn{border-color:rgba(180,35,24,.35);background:linear-gradient(180deg,var(--ui-danger-soft),var(--ui-surface) 70%);}
.db-num{font-size:26px;font-weight:600;letter-spacing:-.02em;line-height:1.15;margin-top:6px;font-variant-numeric:tabular-nums;}
.db-ctx{font-size:12px;color:var(--ink-faint);margin-top:4px;}
.db-main{display:grid;grid-template-columns:1fr;gap:10px;margin-top:10px;}
.db-card{border:1px solid var(--line);border-radius:10px;padding:13px 14px;min-width:0;overflow-x:auto;}
.db-card-h{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12.5px;font-weight:600;margin-bottom:8px;}
.db-legend{display:flex;align-items:center;gap:6px;font-weight:400;color:var(--ink-faint);font-size:11px;}
.db-legend i{display:inline-block;width:14px;height:2px;background:var(--accent);margin-left:6px;}
.db-legend i.p{background:repeating-linear-gradient(90deg,var(--ink-faint) 0 3px,transparent 3px 6px);}
.db-chart{display:block;width:100%;height:auto;}
.db-table{width:100%;border-collapse:collapse;font-size:12.5px;}
.db-table th{text-align:left;font-family:var(--mono);font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);font-weight:500;padding:6px 6px;border-bottom:1px solid var(--line);}
.db-table td{padding:8px 6px;border-bottom:1px dotted var(--line);vertical-align:middle;}
.db-table tr:last-child td{border-bottom:0;}
.db-table td:last-child{text-align:right;}
.db-table td small{display:block;font-size:11px;color:var(--ink-faint);}
.db-table td:first-child,.db-table td:nth-child(2){white-space:nowrap;}
.db-table .ui-btn{padding:4px 9px;font-size:11.5px;}
.db-tiles8{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;width:100%;}
.db-tiles8 > div{border:1px solid var(--line);border-radius:7px;padding:8px;background:var(--ui-surface);display:flex;flex-direction:column;gap:3px;min-width:0;}
.db-tiles8 .ui-lbl{font-size:8.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.db-tiles8 b{font-size:15px;font-weight:600;}
.db-tiles3{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%;}
.db-more{grid-column:1/-1;font-size:12px;color:var(--ink-faint);border:1px dashed var(--line);border-radius:8px;padding:8px 10px;}
.db-more b{color:var(--ink-soft);}
.db-anatomy{display:grid;grid-template-columns:minmax(0,280px) 1fr;gap:30px;align-items:center;}
@media(max-width:700px){.db-anatomy{grid-template-columns:1fr;}}
.db-kpi-big{padding:18px 20px;box-shadow:var(--ui-shadow-2);}
.db-ar{display:flex;align-items:center;gap:12px;margin-left:-34px;}
.db-ar + .db-ar{margin-top:6px;}
.db-m{flex:0 0 20px;width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10.5px;display:flex;align-items:center;justify-content:center;}
.db-ar .db-num,.db-ar .db-ctx{margin-top:0;}
.db-spark{width:150px;height:auto;display:block;}
.db-anatomy-list{list-style:none;counter-reset:a;display:grid;gap:10px;}
.db-anatomy-list li{counter-increment:a;position:relative;padding-left:32px;font-size:14.5px;line-height:1.5;color:var(--ink-soft);}
.db-anatomy-list li::before{content:counter(a);position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10.5px;display:flex;align-items:center;justify-content:center;}
.db-anatomy-list b{color:var(--ink);font-weight:600;}
.db-anatomy .db-kpi-big{margin-left:34px;}
.db-bar{position:relative;height:6px;border-radius:3px;background:var(--paper-2);margin:10px 0 8px;}
.db-bar i{position:absolute;left:0;top:0;bottom:0;border-radius:3px;background:var(--accent);}
.db-bar b{position:absolute;top:-4px;width:2px;height:14px;background:var(--ink);margin-left:-1px;}
.db-filterbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 16px;border-bottom:1px solid var(--line);}
.db-search svg{flex:0 0 14px;}
.db-search{display:flex;align-items:center;gap:8px;color:var(--ink-faint);border:1px solid var(--line);border-radius:7px;padding:6px 12px;min-width:170px;font-size:12.5px;}
.db-fchip{font-size:12px;border:1px dashed var(--line);border-radius:20px;padding:5px 11px;color:var(--ink-soft);white-space:nowrap;}
.db-fchip.on{border-style:solid;border-color:var(--accent);background:rgba(31,79,209,.07);color:var(--accent-deep);font-weight:500;}
.db-fsp{flex:1;}
.db-fresult{padding:10px 16px;font-size:12.5px;color:var(--ink-faint);border-bottom:1px solid var(--line);background:var(--paper);}
.db-fresult b{color:var(--ink);font-weight:600;}
.db-fempty{padding:16px;}
.db-fempty p{font-size:13px;color:var(--ink-soft);margin-top:6px;}
.db-fempty p b{color:var(--ink);}
.db-banner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:var(--ui-danger-soft);border:1px solid rgba(180,35,24,.25);border-radius:9px;padding:9px 10px 9px 12px;font-size:12.5px;color:var(--ink-soft);margin-bottom:8px;}
.db-banner b{color:var(--ui-danger);}

/* ---------- note 03: visual hierarchy ---------- */
.vh-rank{list-style:none;display:grid;gap:8px;}
.vh-rank li{display:flex;align-items:center;gap:14px;background:var(--ui-surface);border:1px solid var(--line);border-radius:10px;padding:12px 16px;}
.vh-rank li div{flex:1;min-width:0;}
.vh-rank b{display:block;font-size:15px;font-weight:600;color:var(--ink);}
.vh-rank small{display:block;font-size:13px;color:var(--ink-faint);margin-top:2px;}
.vh-rank em{font-style:normal;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);}
.vh-rank li:first-child{border-color:rgba(31,79,209,.45);}
.vh-rank li:first-child em{color:var(--accent);}
.vh-lvl{flex:0 0 28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:12px;}
.vh-lvl.s{background:var(--accent-deep);}
.vh-lvl.t{background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line);}
.vh-scale{background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:8px 22px;}
.vh-scale-row{display:grid;grid-template-columns:130px 1fr;gap:16px;align-items:baseline;padding:14px 0;border-bottom:1px dotted var(--line);min-width:0;}
.vh-scale-row:last-child{border-bottom:0;}
@media(max-width:560px){.vh-scale-row{grid-template-columns:1fr;gap:4px;}}
.vh-spec{font-family:var(--mono);font-size:11px;color:var(--accent);}
.vh-t1{font-family:var(--sans);font-size:32px;font-weight:600;line-height:1.1;letter-spacing:-.02em;}
.vh-t2{font-family:var(--sans);font-size:18px;font-weight:600;line-height:1.3;}
.vh-t3{font-family:var(--sans);font-size:15px;line-height:1.5;color:var(--ink-soft);}
.vh-t4{font-family:var(--sans);font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--ink-faint);}
.vh-fields{width:100%;display:grid;font-size:13.5px;}
.vh-fields .ui-lbl{display:block;font-size:9.5px;margin-bottom:1px;}
.vh-fields.even{grid-template-columns:1fr 1fr;gap:14px 16px;}
.vh-fields.grouped{grid-template-columns:1fr 1fr;gap:24px;}
@media(max-width:420px){.vh-fields.grouped{grid-template-columns:1fr;}}
.vh-group{display:grid;gap:8px;align-content:start;min-width:0;}
.vh-group > div{overflow-wrap:anywhere;}
.vh-gh{font-size:12.5px;font-weight:600;color:var(--ink);padding-bottom:6px;border-bottom:1px solid var(--line);}
.vh-fields.even > div{overflow-wrap:anywhere;}
.vh-6030{background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:18px;}
.vh-bar{display:flex;height:64px;border-radius:8px;overflow:hidden;border:1px solid var(--line);}
.vh-bar span{display:flex;align-items:flex-end;padding:8px 10px;font-family:var(--mono);font-size:12px;color:var(--ink-soft);}
.vh-6030-legend{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px;}
@media(max-width:620px){.vh-6030-legend{grid-template-columns:1fr;}}
.vh-6030-legend b{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;}
.vh-6030-legend b::before{content:"";width:12px;height:12px;border-radius:3px;border:1px solid var(--line);background:var(--paper);}
.vh-6030-legend div:nth-child(2) b::before{background:var(--paper-2);}
.vh-6030-legend div:nth-child(3) b::before{background:var(--accent);border-color:var(--accent);}
.vh-6030-legend small{display:block;font-size:12px;color:var(--ink-faint);line-height:1.4;margin-top:2px;}
.vh-btns{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
.vh-sizes{display:grid;grid-template-columns:1.6fr 1fr;gap:20px;align-items:start;}
@media(max-width:640px){.vh-sizes{grid-template-columns:1fr;}}
.vh-size .ui-lbl{margin-bottom:8px;}
.vh-desk{display:grid;grid-template-columns:1.2fr 1fr;gap:16px;background:var(--ui-surface);border:1px solid var(--line);border-radius:10px;padding:16px;box-shadow:var(--ui-shadow-1);}
.vh-desk-main{display:flex;flex-direction:column;align-items:flex-start;gap:8px;}
.vh-desk-side{display:grid;gap:9px;align-content:start;padding:10px;background:var(--paper);border-radius:8px;}
.vh-amt{font-size:22px;font-weight:600;letter-spacing:-.02em;}
.vh-phone{width:180px;max-width:100%;margin:0 auto;display:flex;flex-direction:column;align-items:flex-start;gap:9px;background:var(--ui-surface);border:1px solid var(--line);border-radius:20px;padding:22px 14px 14px;box-shadow:var(--ui-shadow-1);}
.vh-phone .ui-skel{margin-top:2px;}
.vh-phone-bar{width:100%;margin-top:26px;padding-top:10px;border-top:1px solid var(--line);}
.vh-blur{filter:blur(3.5px);pointer-events:none;user-select:none;width:100%;display:flex;justify-content:center;}
.inv{width:100%;max-width:330px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:18px;font-size:13px;}
.inv-weak{text-align:center;border-radius:4px;border-width:2px;padding:0 0 14px;}
.inv-w-title{background:var(--accent);color:#fff;font-weight:700;font-size:17px;letter-spacing:.04em;padding:10px;margin-bottom:10px;}
.inv-w-row{padding:4px 14px;border-bottom:1px solid var(--line);font-size:13px;}
.inv-w-row b{font-weight:700;}
.inv-w-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;padding:12px 10px 0;}
.inv-w-btns .ui-btn{font-weight:700;}
.inv-good{box-shadow:var(--ui-shadow-2);}
.inv-good > div{position:relative;}
.inv-g-amt{font-size:30px;font-weight:600;letter-spacing:-.02em;line-height:1.1;margin-top:10px;}
.inv-g-status{display:flex;align-items:center;gap:8px;margin-top:8px;font-size:12.5px;}
.inv-g-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.inv-g-items{margin-top:20px;padding-top:12px;border-top:1px solid var(--line);display:grid;gap:6px;font-size:12.5px;color:var(--ink-soft);}
.inv-g-items div{display:flex;justify-content:space-between;gap:10px;}
.inv-g-items div span:last-child{font-variant-numeric:tabular-nums;color:var(--ink);}
.inv-g-foot{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:12px;}
.vh-mk{display:none;}
.vh-annot{display:grid;grid-template-columns:minmax(0,360px) 1fr;gap:30px;align-items:center;}
@media(max-width:720px){.vh-annot{grid-template-columns:1fr;}}
.vh-annot-ui{padding-left:30px;}
.vh-annot .vh-mk{display:flex;position:absolute;left:-48px;top:50%;transform:translateY(-50%);width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:0;align-items:center;justify-content:center;}
.vh-annot .inv-g-items .vh-mk{top:22px;transform:none;background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line);}
.vh-annot-list{list-style:none;counter-reset:a;display:grid;gap:12px;}
.vh-annot-list li{counter-increment:a;position:relative;padding-left:34px;font-size:14.5px;line-height:1.5;color:var(--ink-soft);}
.vh-annot-list li::before{content:counter(a);position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:11px;display:flex;align-items:center;justify-content:center;}
.vh-annot-list li:last-child::before{background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line);box-sizing:border-box;}
.vh-annot-list b{color:var(--ink);font-weight:600;}

/* ---------- note 04: ux principles ---------- */
.dn-sec > p > .dn-math{margin-top:0;}
.ux-dialog{width:100%;max-width:300px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--ui-shadow-2);padding:16px;}
.ux-dh{font-size:14.5px;font-weight:600;margin-bottom:12px;}
.ux-opts.many{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;}
.ux-opts.many span{display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:6px;padding:6px 8px;font-size:11.5px;}
.ux-opts.many span::before{content:"";width:9px;height:9px;border-radius:50%;border:1.5px solid var(--ink-faint);flex:0 0 9px;}
.ux-opts:not(.many){display:grid;gap:6px;}
.ux-opts label{display:grid;grid-template-columns:auto 1fr;column-gap:10px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;}
.ux-opts label i{grid-row:span 2;width:14px;height:14px;border-radius:50%;border:1.5px solid var(--ink-faint);margin-top:2px;}
.ux-opts label.on{border-color:var(--accent);background:rgba(31,79,209,.05);}
.ux-opts label.on i{border:4px solid var(--accent);}
.ux-opts label b{font-size:13px;font-weight:600;}
.ux-opts label small{font-size:11.5px;color:var(--ink-faint);}
.ux-more{font-size:12px;color:var(--accent);margin-top:10px;}
.ux-df{display:flex;justify-content:flex-end;gap:8px;margin-top:14px;}
.ux-form{width:100%;max-width:260px;}
.ux-l{font-size:12.5px;font-weight:500;color:var(--ink);}
.ux-i{height:32px;border:1px solid var(--line);border-radius:7px;background:var(--ui-surface);}
.ux-h{font-size:11.5px;color:var(--ink-faint);margin-top:5px;}
.ux-form.even > div + div{margin-top:12px;}
.ux-form.tight .ux-g + .ux-g{margin-top:20px;}
.ux-form.tight .ux-l{margin-bottom:6px;}
.ux-list{list-style:none;width:100%;max-width:290px;background:var(--ui-surface);border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.ux-list li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--line);font-size:13px;}
.ux-list li:last-child{border-bottom:0;}
.ux-list li.hot{background:var(--ui-danger-soft);font-weight:600;box-shadow:inset 3px 0 0 var(--ui-danger);}
.ux-list .ui-muted{font-size:12px;}

/* ---------- note 05: landing pages ---------- */
.lp{max-width:760px;margin:0 auto;}
.lp-row{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:0 22px;}
@media(max-width:760px){.lp-row{grid-template-columns:1fr;}}
.lp-sec{background:var(--ui-surface);border-left:1px solid var(--line);border-right:1px solid var(--line);border-top:1px solid var(--line);padding:18px 20px;font-size:12px;min-width:0;}
.lp-row:first-child .lp-sec{border-radius:12px 12px 0 0;}
.lp-row:last-child .lp-sec{border-radius:0 0 12px 12px;border-bottom:1px solid var(--line);}
.lp-note{align-self:center;position:relative;padding:12px 0 12px 16px;border-left:2px solid var(--accent);}
.lp-note b{display:block;font-size:13.5px;font-weight:600;margin:2px 0 3px;}
.lp-note small{display:block;font-size:12.5px;line-height:1.45;color:var(--ink-soft);}
.lp-n{font-family:var(--mono);font-size:10.5px;color:var(--accent);letter-spacing:.06em;}
@media(max-width:760px){
  .lp-note{margin:0 0 0 0;padding:10px 14px;border-left:1px solid var(--line);border-right:1px solid var(--line);border-top:1px dashed var(--line);background:rgba(31,79,209,.05);}
  .lp-row:last-child .lp-sec{border-radius:0;}
  .lp-row:last-child .lp-note{border-bottom:1px solid var(--line);border-radius:0 0 12px 12px;}
}
.lp-nav{display:flex;align-items:center;gap:14px;padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--line);}
.lp-nav b{font-size:13px;margin-right:auto;}
.lp-navl{color:var(--ink-faint);font-size:11.5px;}
@media(max-width:480px){.lp-navl{display:none;}}
.lp-sm{padding:5px 9px;font-size:11px;}
.lp-hero-b{display:grid;grid-template-columns:1.1fr 0.9fr;gap:18px;align-items:center;}
@media(max-width:480px){.lp-hero-b{grid-template-columns:1fr;}}
.lp-h1{font-size:21px;font-weight:650;font-weight:600;line-height:1.15;letter-spacing:-.02em;}
.lp-h2{font-size:16px;font-weight:600;line-height:1.25;letter-spacing:-.01em;margin-top:4px;}
.lp-p{font-size:12px;color:var(--ink-soft);line-height:1.5;margin-top:8px;}
.lp-ctas{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;}
.lp-ctas .ui-btn{font-size:11.5px;padding:6px 10px;}
.lp-fine{font-size:10.5px;color:var(--ink-faint);margin-top:7px;}
.lp-shot{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:10px;display:grid;gap:7px;}
.lp-shot-h{height:7px;width:45%;border-radius:4px;background:var(--ink);}
.lp-check{display:flex;align-items:center;gap:7px;}
.lp-check i{width:10px;height:10px;border-radius:3px;border:1.5px solid var(--ink-faint);flex:0 0 10px;}
.lp-check i.d{background:var(--accent);border-color:var(--accent);}
.lp-prog{height:5px;border-radius:3px;background:var(--line);overflow:hidden;}
.lp-prog b{display:block;height:100%;background:var(--accent);}
.lp-center{text-align:center;}
.lp-kicker{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);}
.lp-center .lp-kicker{color:var(--ink-faint);}
.lp-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:10px;}
.lp-logos span{font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);border:1px dashed var(--line);border-radius:5px;padding:5px 14px;}
.lp-cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px;}
@media(max-width:480px){.lp-cols3{grid-template-columns:1fr;}}
.lp-cols3 div,.lp-feats div{border:1px solid var(--line);border-radius:8px;padding:9px 10px;}
.lp-cols3 b,.lp-feats b{display:block;font-size:12px;font-weight:600;}
.lp-cols3 small,.lp-feats small{display:block;font-size:11px;color:var(--ink-faint);margin-top:2px;line-height:1.4;}
.lp-split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:center;}
@media(max-width:480px){.lp-split{grid-template-columns:1fr;}}
.lp-shot-table{gap:0;padding:4px 10px;}
.lp-tr{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:7px 0;border-bottom:1px dotted var(--line);}
.lp-tr:last-child{border-bottom:0;}
.lp-tr .ui-chip{font-size:10px;padding:2px 7px;}
.lp-feats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px;}
@media(max-width:560px){.lp-feats{grid-template-columns:1fr 1fr;}}
.lp-feats i{display:block;width:16px;height:16px;border-radius:5px;background:rgba(31,79,209,.14);margin-bottom:7px;}
.lp-steps{display:flex;align-items:center;gap:6px;margin-top:10px;}
.lp-steps div{flex:1;display:flex;align-items:center;gap:7px;min-width:0;}
.lp-steps div + div::before{content:"";flex:0 0 14px;height:1px;background:var(--line);}
.lp-steps span{flex:0 0 20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--mono);font-size:10px;display:flex;align-items:center;justify-content:center;}
.lp-steps b{font-size:11.5px;font-weight:600;}
@media(max-width:480px){.lp-steps{flex-direction:column;align-items:flex-start;}.lp-steps div + div::before{display:none;}}
.lp-quotes{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;}
@media(max-width:480px){.lp-quotes{grid-template-columns:1fr;}}
.lp-q{border:1px dashed var(--ink-faint);border-radius:8px;padding:10px;background:var(--paper);}
.lp-slot{display:block;font-family:var(--mono);font-size:10px;color:var(--ink-soft);line-height:1.5;}
.lp-slot::before{content:"[ ";color:var(--accent);} .lp-slot::after{content:" ]";color:var(--accent);}
.lp-q small{display:block;font-size:10.5px;color:var(--ink-faint);margin-top:6px;}
.lp-plans{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px;}
@media(max-width:480px){.lp-plans{grid-template-columns:1fr;}}
.lp-plans > div{position:relative;border:1px solid var(--line);border-radius:8px;padding:12px 10px;display:flex;flex-direction:column;gap:3px;}
.lp-plans > div.on{border:1.5px solid var(--accent);}
.lp-plans b{font-size:12px;font-weight:600;}
.lp-plans em{font-style:normal;font-size:18px;font-weight:600;letter-spacing:-.02em;}
.lp-plans em small{font-size:10.5px;font-weight:400;color:var(--ink-faint);}
.lp-plans > div > small{font-size:10.5px;color:var(--ink-faint);margin-bottom:6px;}
.lp-plans .ui-btn{font-size:10.5px;padding:5px 8px;justify-content:center;margin-top:auto;}
.lp-tag{position:absolute;top:-9px;left:10px;font-size:9px;font-weight:600;background:var(--accent);color:#fff;border-radius:10px;padding:2px 7px;}
.lp-faq{margin-top:8px;}
.lp-faq div{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:12px;}
.lp-faq div:last-child{border-bottom:0;}
.lp-faq span{color:var(--accent);}
.lp-sec.lp-final{background:var(--ink);color:var(--paper);text-align:center;padding:26px 20px;border-color:var(--ink);}
.lp-final .lp-h2{color:var(--paper);margin:0 auto 12px;max-width:30ch;}
.lp-final .lp-fine{color:var(--line);}

/* ---------- note 06: polished ui ---------- */
.pu-scale{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px;}
.pu-scale div{display:flex;flex-direction:column;align-items:center;gap:6px;}
.pu-scale i{display:block;background:rgba(31,79,209,.14);outline:1px solid var(--accent);outline-offset:-1px;}
.pu-scale span{font-family:var(--mono);font-size:11px;color:var(--ink-soft);}
.pu-card{width:100%;max-width:280px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:var(--ui-shadow-1);}
.pu-card-weak{padding:19px 15px 22px 21px;border-radius:9px;}
.pu-nest{background:var(--ui-surface);border:1px solid var(--ui-border-strong);padding:14px;width:100%;max-width:240px;}
.pu-nest div{background:rgba(31,79,209,.12);height:110px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:12px;color:var(--accent-deep);}
.pu-radii{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:20px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:16px;}
@media(max-width:620px){.pu-radii{grid-template-columns:repeat(3,1fr);}}
.pu-radii div{display:flex;flex-direction:column;gap:3px;}
.pu-radii i{display:block;width:44px;height:44px;border:1.5px solid var(--accent);background:rgba(31,79,209,.08);margin-bottom:6px;}
.pu-radii b{font-family:var(--mono);font-size:11.5px;font-weight:500;color:var(--ink);}
.pu-radii small{font-size:11.5px;color:var(--ink-faint);line-height:1.35;}
.pu-white{background:var(--ui-surface);}
.pu-soft{background:var(--paper);}
.pu-tile{display:block;width:150px;height:96px;border-radius:12px;background:var(--ui-surface);}
.pu-shadow-stage .dn-pane-box{min-height:200px;}
.pu-elev{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:24px 20px 18px;}
@media(max-width:620px){.pu-elev{grid-template-columns:1fr 1fr;}}
.pu-elev div{display:flex;flex-direction:column;gap:3px;}
.pu-elev .pu-tile.sm{width:72px;height:48px;border-radius:9px;margin-bottom:14px;}
.pu-elev b{font-size:13px;font-weight:600;}
.pu-elev small{font-size:12px;color:var(--ink-faint);line-height:1.4;}
.pu-field{width:100%;max-width:260px;font-family:var(--sans);}
.pu-field span{display:block;font-size:12.5px;font-weight:500;margin-bottom:6px;}
.pu-field i{display:block;height:38px;border:1px solid;border-radius:8px;background:var(--ui-surface);}
.pu-type{max-width:300px;font-family:var(--sans);color:var(--ink);}
.pu-type h4{font-size:19px;font-weight:600;}
.pu-type p{font-size:13.5px;color:var(--ink-soft);margin:10px 0 14px;}
.pu-num{display:flex;justify-content:space-between;font-size:13.5px;padding:4px 0;border-top:1px solid var(--line);}
.pu-type.weak h4{line-height:1.5;letter-spacing:0;}
.pu-type.weak p{line-height:1.15;}
.pu-type.weak .pu-num span:last-child{font-variant-numeric:proportional-nums;}
.pu-type.good h4{line-height:1.2;letter-spacing:-.015em;}
.pu-type.good p{line-height:1.55;}
.pu-type.good .pu-num span:last-child{font-variant-numeric:tabular-nums;}
.dn-stage.pu-white-stage{background:var(--paper-2);}
.pu-states{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:22px 18px;}
@media(max-width:640px){.pu-states{grid-template-columns:repeat(2,1fr);}}
.pu-state{display:flex;flex-direction:column;align-items:flex-start;gap:3px;}
.pu-state .pu-btn{margin-bottom:12px;}
.pu-state b{font-size:13px;font-weight:600;}
.pu-state small{font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);}
.pu-btn{font-family:var(--sans);font-size:14px;font-weight:500;line-height:1;color:#fff;background:var(--accent);border:1px solid transparent;border-radius:8px;padding:11px 18px;cursor:pointer;
  transition:background-color .15s,transform .05s;display:inline-flex;align-items:center;justify-content:center;}
.pu-btn:hover,.pu-btn.is-hover{background:var(--accent-deep);}
.pu-btn:active,.pu-btn.is-active{background:var(--accent-deep);transform:translateY(1px);box-shadow:inset 0 1px 2px rgba(0,0,0,.25);}
.dn .pu-btn:focus-visible,.pu-btn.is-focus{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;}
.pu-btn:disabled,.pu-btn.is-disabled{background:var(--paper-2);color:var(--ink-faint);border-color:var(--line);cursor:not-allowed;transform:none;box-shadow:none;}
.pu-btn.sec{background:var(--ui-surface);color:var(--ink);border-color:var(--ui-border-strong);}
.pu-btn.sec:hover{background:var(--paper);}
.pu-btn.sec:active{background:var(--paper-2);box-shadow:none;}
.pu-try{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px;padding:16px 18px;background:var(--ui-surface);border:1px dashed var(--ui-border-strong);border-radius:12px;}
.pu-try .ui-lbl{margin-right:6px;}
.pu-focus{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;background:var(--ui-surface);border:1px solid var(--line);border-radius:12px;padding:22px 18px;}
@media(max-width:640px){.pu-focus{grid-template-columns:1fr;}}
.pu-focus div{display:flex;flex-direction:column;gap:3px;}
.pu-focus b{font-size:13px;font-weight:600;margin-top:12px;}
.pu-focus small{font-size:12px;color:var(--ink-faint);line-height:1.4;}
.pu-field2{display:flex;align-items:center;height:38px;border:1px solid var(--ui-border-strong);border-radius:8px;padding:0 12px;font-size:13px;color:var(--ink-faint);background:var(--ui-surface);}
.pu-field2.is-default{outline:2px auto -webkit-focus-ring-color;outline:2px solid Highlight;outline-offset:0;}
.pu-field2.is-ring{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:2px;}
.pu-input{font-family:var(--sans);font-size:14px;height:40px;border:1px solid var(--ui-border-strong);border-radius:8px;padding:0 12px;background:var(--ui-surface);color:var(--ink);min-width:0;flex:1 1 160px;max-width:220px;}
.dn .pu-input:focus-visible,.pu-input:focus{outline:2px solid var(--accent);outline-offset:2px;border-color:var(--accent);border-radius:8px;}
.pu-set{width:100%;max-width:300px;background:var(--ui-surface);font-size:13px;}
.pu-set .r{display:flex;justify-content:space-between;align-items:center;gap:10px;}
.pu-set .tg{display:block;width:32px;height:18px;border-radius:9px;background:var(--line);position:relative;flex:0 0 32px;}
.pu-set .tg::after{content:"";position:absolute;left:2px;top:2px;width:14px;height:14px;border-radius:50%;background:#fff;}
.pu-set .tg.on{background:var(--accent);}
.pu-set .tg.on::after{left:16px;}
.pu-set .in{display:inline-flex;align-items:center;justify-content:flex-end;width:52px;height:28px;padding:0 8px;border:1px solid var(--ui-border-strong);border-radius:6px;font-variant-numeric:tabular-nums;}
.pu-set.weak{border:2px solid var(--ink-faint);border-radius:4px;padding:11px 18px 15px 13px;box-shadow:0 5px 12px rgba(0,0,0,.4);}
.pu-set.weak .h{font-size:16px;font-weight:700;margin-bottom:9px;}
.pu-set.weak .r{border:1px solid var(--line);border-radius:10px;padding:7px 9px;margin-bottom:5px;}
.pu-set.weak .in{border-radius:2px;}
.pu-set.weak .f{display:flex;justify-content:center;gap:8px;margin-top:13px;}
.pu-set.weak .ui-btn{border-radius:14px;}
.pu-set.good{border:1px solid var(--line);border-radius:12px;padding:20px 24px 16px;box-shadow:var(--ui-shadow-1);}
.pu-set.good .h{font-size:15px;font-weight:600;margin-bottom:8px;}
.pu-set.good .h small{display:block;font-size:12.5px;font-weight:400;color:var(--ink-faint);margin-top:4px;}
.pu-set.good .r{padding:12px 0;border-bottom:1px solid var(--line);}
.pu-set.good .tg{background:var(--ui-border-strong);}
.pu-set.good .tg.on{background:var(--accent);}
.pu-set.good .f{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;}

/* reduced motion */
@media(prefers-reduced-motion:reduce){
  .pu-btn{transition:none;}
  .pu-btn:active{transform:none;}
  .dn-card,.dn-cover svg,.dn-go span{transition:none;}
  .dn-card:hover{transform:none;}
  .dn-card:hover .dn-cover svg{transform:none;}
  .dn-card:hover .dn-go span{transform:none;}
}