:root {
  --ivory: #f4eddf;
  --paper: #fffaf1;
  --ink: #251d1b;
  --muted: #6e625e;
  --oxblood: #661f2d;
  --oxblood-dark: #44121c;
  --teal: #1f6962;
  --teal-dark: #124741;
  --rose: #d7a7a3;
  --mist: #d8e6df;
  --line: rgba(37, 29, 27, .2);
  --shadow: 0 24px 80px rgba(68, 18, 28, .14);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Arial, Helvetica, sans-serif;
  --step--1: clamp(.82rem, .78rem + .15vw, .92rem);
  --step-0: clamp(1rem, .96rem + .2vw, 1.12rem);
  --step-1: clamp(1.25rem, 1.08rem + .7vw, 1.65rem);
  --step-2: clamp(1.65rem, 1.26rem + 1.6vw, 2.55rem);
  --step-3: clamp(2.4rem, 1.48rem + 3.7vw, 5.35rem);
  --step-4: clamp(3rem, 1.5rem + 3.7vw, 5.7rem);
  --shell: min(1220px, calc(100vw - 40px));
  --focus: 3px solid #0b5951;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--ivory); font-family: var(--sans); font-size: var(--step-0); line-height: 1.65; text-rendering: optimizeLegibility; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .18em; }
button, input { font: inherit; }
button { color: inherit; }
:focus-visible { outline: var(--focus); outline-offset: 4px; }
[hidden] { display: none !important; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; top: 12px; left: 12px; transform: translateY(-180%); background: var(--paper); padding: 10px 16px; border: 2px solid var(--ink); }
.skip-link:focus { transform: none; }

.site-header { position: relative; z-index: 50; display: flex; align-items: stretch; justify-content: space-between; min-height: 82px; border-bottom: 1px solid var(--line); background: rgba(244, 237, 223, .96); }
.wordmark { display: flex; align-items: center; gap: 14px; padding: 12px max(20px, calc((100vw - 1220px) / 2)); text-decoration: none; }
.wordmark-rule { width: 46px; height: 32px; border-top: 3px solid var(--oxblood); border-bottom: 1px solid var(--oxblood); position: relative; }
.wordmark-rule::after { content: ''; position: absolute; right: 0; bottom: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--teal); }
.wordmark span:last-child { display: grid; line-height: 1.1; }
.wordmark strong { font-family: var(--serif); font-size: 1.02rem; letter-spacing: .03em; }
.wordmark small { margin-top: 6px; font-size: .69rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.index-toggle { min-width: 180px; padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border: 0; border-left: 1px solid var(--line); background: transparent; cursor: pointer; }
.index-toggle:hover { background: var(--paper); }
.index-glyph { font-family: var(--serif); letter-spacing: -.22em; color: var(--oxblood); }
.site-index { position: fixed; inset: 0 0 0 auto; z-index: 70; width: min(720px, 100vw); padding: 28px clamp(22px, 5vw, 70px); color: var(--paper); background: var(--oxblood-dark); box-shadow: -40px 0 100px rgba(0,0,0,.28); overflow-y: auto; }
.site-index::before { content: ''; position: absolute; inset: 0; opacity: .13; pointer-events: none; background-image: repeating-linear-gradient(90deg, transparent 0 11.9%, var(--ivory) 12% 12.1%); }
.index-head, .index-columns, .index-note { position: relative; }
.index-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,.3); padding-bottom: 22px; }
.index-head span { text-transform: uppercase; letter-spacing: .18em; font-size: .78rem; }
.index-head button { border: 0; color: inherit; background: transparent; cursor: pointer; padding: 10px; }
.index-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding-block: 56px; }
.index-label { margin: 0 0 12px; color: var(--rose); text-transform: uppercase; letter-spacing: .18em; font-size: .75rem; }
.index-columns a { min-height: 56px; display: flex; align-items: center; justify-content: space-between; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.22); font-family: var(--serif); font-size: 1.3rem; }
.index-columns a:hover, .index-columns a[aria-current] { color: #e5c7b4; padding-left: 9px; }
.index-columns i { font: normal .75rem var(--sans); color: var(--rose); }
.index-note { max-width: 580px; border-top: 1px solid rgba(255,255,255,.3); padding-top: 20px; font-size: .86rem; color: #e7d6ce; }

.eyebrow { margin: 0 0 20px; display: flex; align-items: center; gap: 12px; color: var(--oxblood); font-size: .73rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow::before { content: ''; width: 32px; height: 1px; background: currentColor; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--oxblood); padding: 11px 20px; text-decoration: none; font-weight: 700; cursor: pointer; transition: transform .18s ease, background .18s ease; }
.button:hover:not(:disabled) { transform: translateY(-2px); }
.button-solid { color: #fffaf1; background: var(--oxblood); }
.button-solid:hover:not(:disabled) { background: var(--oxblood-dark); }
.button-ghost { color: var(--oxblood); background: transparent; }
.button:disabled { opacity: .56; cursor: not-allowed; }
.text-button { border: 0; background: transparent; padding: 8px 0; text-decoration: underline; cursor: pointer; }
.link-arrow { font-weight: 700; color: var(--oxblood); text-decoration: none; border-bottom: 1px solid currentColor; }

.hero { min-height: calc(100svh - 82px); display: grid; grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr); align-items: stretch; }
.hero-copy { padding: clamp(52px, 6vw, 94px) clamp(20px, 6vw, 92px) clamp(48px, 6vw, 90px) max(20px, calc((100vw - 1220px) / 2)); display: flex; flex-direction: column; justify-content: center; }
.hero h1 { max-width: 820px; margin: 0; font-family: var(--serif); font-size: var(--step-4); font-weight: 400; line-height: .88; letter-spacing: -.055em; }
.hero h1 em { color: var(--oxblood); font-weight: 400; }
.hero-intro { max-width: 630px; margin: 30px 0 0; font-size: var(--step-1); line-height: 1.45; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px 22px; margin-top: 34px; align-items: center; }
.hero-note { margin: 30px 0 0; max-width: 590px; border-left: 3px solid var(--teal); padding-left: 16px; color: var(--muted); font-size: .88rem; }
.hero-visual { min-height: 680px; position: relative; overflow: hidden; background: #dfd3c1; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 58% center; }
.hero-caption { position: absolute; left: 0; bottom: 0; margin: 0; padding: 15px 22px; color: var(--paper); background: rgba(37,29,27,.88); font-size: .73rem; letter-spacing: .05em; }
.chapter-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.chapter-strip a { min-height: 86px; display: grid; grid-template-columns: 36px 1fr; align-items: center; gap: 8px; padding: 18px 24px; border-right: 1px solid var(--line); text-decoration: none; }
.chapter-strip a:last-child { border-right: 0; }
.chapter-strip span { color: var(--oxblood); font: italic 1.2rem var(--serif); }
.chapter-strip strong { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; }

.section { padding-block: clamp(78px, 10vw, 150px); }
.section-head { display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; margin-bottom: 56px; align-items: start; }
.section-head h2 { margin: 0; max-width: 820px; font: 400 var(--step-3)/1.02 var(--serif); letter-spacing: -.035em; }
.section-head p { margin: 0; max-width: 520px; color: var(--muted); }
.section-dark { color: var(--paper); background: var(--oxblood-dark); }
.section-dark .eyebrow { color: #e1b2ad; }
.section-dark .section-head p { color: #dfcec6; }
.method-image-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(30px, 7vw, 100px); align-items: center; }
.method-image { box-shadow: var(--shadow); position: relative; }
.method-image::before { content: 'NOTĂ DE LUCRU · 04 STRATURI'; position: absolute; z-index: 2; top: 18px; left: -20px; padding: 8px 12px; background: var(--teal); color: white; font-size: .65rem; letter-spacing: .12em; transform: rotate(-90deg) translateX(-100%); transform-origin: left top; }
.method-copy h2 { margin: 0 0 24px; font: 400 var(--step-3)/1.05 var(--serif); }
.method-copy p { max-width: 560px; }
.four-lines { list-style: none; margin: 34px 0; padding: 0; }
.four-lines li { display: grid; grid-template-columns: 44px 1fr; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.four-lines b { color: var(--teal); font: italic 1.15rem var(--serif); }

/* Signature developing-room interaction */
.developing-room { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: clamp(28px, 5vw, 76px); align-items: start; }
.developing-controls { position: sticky; top: 24px; display: grid; }
.developing-controls button { position: relative; min-height: 76px; display: grid; grid-template-columns: 40px 1fr; align-items: center; text-align: left; border: 0; border-bottom: 1px solid rgba(255,255,255,.22); background: transparent; color: inherit; cursor: pointer; }
.developing-controls button::after { content: ''; position: absolute; left: 0; bottom: -1px; width: 0; height: 2px; background: #d7a7a3; transition: width .35s ease; }
.developing-controls button[aria-selected="true"]::after { width: 100%; }
.developing-controls b { font: italic 1.15rem var(--serif); color: #d7a7a3; }
.developing-controls span { font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; }
.developing-stage { min-height: 520px; position: relative; perspective: 1200px; }
.specimen-panel { position: absolute; inset: calc(var(--layer) * 18px) calc((3 - var(--layer)) * 24px) auto calc(var(--layer) * 18px); min-height: 420px; padding: clamp(28px, 5vw, 64px); color: var(--ink); background: color-mix(in srgb, var(--paper) 88%, transparent); border: 1px solid rgba(255,255,255,.6); box-shadow: 0 28px 80px rgba(0,0,0,.18); backdrop-filter: blur(8px); transform: rotateY(calc((var(--layer) - var(--active)) * 6deg)) translateZ(calc((var(--layer) - var(--active)) * -20px)); opacity: .28; pointer-events: none; transition: transform .5s ease, opacity .4s ease, inset .5s ease; }
.specimen-panel.layer-0 { --layer: 0; }
.specimen-panel.layer-1 { --layer: 1; }
.specimen-panel.layer-2 { --layer: 2; }
.specimen-panel.layer-3 { --layer: 3; }
.specimen-panel[aria-hidden="false"] { opacity: 1; z-index: 5; pointer-events: auto; }
.specimen-panel .panel-num { color: var(--oxblood); font: italic 1.3rem var(--serif); }
.specimen-panel h3 { max-width: 620px; margin: 16px 0 22px; font: 400 var(--step-2)/1.08 var(--serif); }
.specimen-panel p { max-width: 660px; }
.panel-example { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.panel-example span { padding: 16px 10px 0 0; font-size: .8rem; color: var(--muted); }
.developing-progress { grid-column: 2; display: flex; align-items: center; gap: 15px; margin-top: 18px; }
.developing-progress output { min-width: 58px; font: italic 1rem var(--serif); }
.progress-track { flex: 1; height: 2px; background: rgba(255,255,255,.25); }
.progress-track i { display: block; height: 100%; width: var(--progress, 25%); background: #d7a7a3; transition: width .4s ease; }

.mechanism-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.mechanism-card { min-height: 330px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); padding: 28px; background: rgba(255,250,241,.5); }
.mechanism-card:nth-child(2) { transform: translateY(36px); }
.mechanism-card:nth-child(3) { transform: translateY(72px); }
.mechanism-card .number { color: var(--teal); font: italic 1.4rem var(--serif); }
.mechanism-card h3 { margin: 36px 0 14px; font: 400 1.6rem/1.12 var(--serif); }
.mechanism-card p { color: var(--muted); }
.mechanism-card a { margin-top: 25px; font-weight: 700; color: var(--oxblood); }

.lead-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(30px, 8vw, 120px); align-items: start; }
.lead-section h2 { margin: 0; font: 400 var(--step-3)/1.05 var(--serif); }
.lead-section > div > p { color: var(--muted); }
.lead-form { padding: clamp(24px, 4vw, 48px); border: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
.field label { display: block; margin-bottom: 10px; font-weight: 700; }
.field input { width: 100%; min-height: 58px; border: 1px solid #70635d; border-radius: 0; padding: 12px 14px; color: var(--ink); background: #fff; }
.lead-form .button { width: 100%; margin-top: 14px; }
.form-state { margin: 18px 0 0; font-size: .88rem; }
.form-legal { margin: 10px 0 0; color: var(--muted); font-size: .78rem; }
.trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; opacity: 0 !important; }

/* Inner pages */
.page-main { min-height: 60vh; }
.page-hero { padding-block: clamp(72px, 12vw, 170px) clamp(60px, 8vw, 110px); border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 1000px; margin: 0; font: 400 var(--step-4)/.95 var(--serif); letter-spacing: -.05em; }
.page-intro { max-width: 760px; margin: 30px 0 0 auto; font-size: var(--step-1); }
.content-grid { display: grid; grid-template-columns: minmax(180px, .55fr) minmax(0, 1.45fr); gap: clamp(35px, 8vw, 120px); padding-block: clamp(65px, 10vw, 130px); }
.content-aside { align-self: start; position: sticky; top: 25px; }
.content-aside p { margin-top: 0; color: var(--muted); font-size: .84rem; }
.content-aside a { display: block; padding: 10px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-weight: 700; font-size: .84rem; }
.prose { max-width: 790px; }
.prose h2 { margin: 0 0 24px; font: 400 var(--step-2)/1.1 var(--serif); }
.prose h2:not(:first-child) { margin-top: 70px; }
.prose h3 { margin-top: 36px; font: 400 1.4rem/1.2 var(--serif); }
.prose p, .prose li { color: #433936; }
.prose blockquote { margin: 38px 0; padding: 24px 30px; border-left: 5px solid var(--teal); background: var(--mist); font: 400 1.25rem/1.45 var(--serif); }
.prose table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: .9rem; }
.prose th, .prose td { padding: 14px; text-align: left; vertical-align: top; border: 1px solid var(--line); }
.prose th { background: rgba(102,31,45,.08); }
.note-box { margin: 36px 0; padding: 24px; border: 1px solid var(--teal); background: rgba(216,230,223,.5); }
.status-lock { border: 2px solid var(--oxblood); padding: 24px; background: #fff7eb; }
.cards-two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.info-card { padding: 26px; border: 1px solid var(--line); background: rgba(255,250,241,.65); }
.info-card h3 { margin-top: 0; }
.chapter-list { counter-reset: chapters; list-style: none; margin: 20px 0; padding: 0; }
.chapter-list li { counter-increment: chapters; display: grid; grid-template-columns: 54px 1fr; padding: 24px 0; border-top: 1px solid var(--line); }
.chapter-list li::before { content: '0' counter(chapters); color: var(--oxblood); font: italic 1.2rem var(--serif); }

/* Assumption sorting desk */
.assumption-lab, .scenario-lab, .boundary-lab, .source-lab, .quiz-lab { margin: 30px 0; padding: clamp(22px, 4vw, 42px); border: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
.tool-intro { color: var(--muted); }
.token-bank { display: flex; flex-wrap: wrap; gap: 10px; padding: 18px; border: 1px dashed var(--line); }
.assumption-token { min-height: 46px; border: 1px solid var(--ink); background: white; padding: 9px 13px; cursor: pointer; }
.assumption-token[aria-pressed="true"] { color: white; background: var(--teal-dark); }
.sorting-zones { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.sorting-zone { min-height: 150px; padding: 18px; border: 1px solid var(--line); background: rgba(216,230,223,.4); }
.sorting-zone h3 { margin-top: 0; font: 400 1.2rem var(--serif); }
.zone-items { display: flex; flex-wrap: wrap; gap: 8px; }
.zone-items button { border: 0; background: white; padding: 8px 10px; text-align: left; cursor: pointer; }
.tool-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }
.tool-output { margin-top: 20px; min-height: 54px; padding: 16px; border-left: 4px solid var(--teal); background: var(--mist); }

.scenario-controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.range-field { padding: 16px; border: 1px solid var(--line); }
.range-field label { display: flex; justify-content: space-between; gap: 15px; font-weight: 700; }
.range-field input { width: 100%; accent-color: var(--oxblood); }
.scenario-fan { min-height: 230px; display: grid; place-items: end center; position: relative; overflow: hidden; margin-top: 24px; border-bottom: 2px solid var(--ink); background: linear-gradient(180deg, transparent, rgba(31,105,98,.08)); }
.fan-path { position: absolute; bottom: 0; left: 50%; width: 36%; height: calc(var(--fan-height, 50) * 1.8px); border: 2px solid currentColor; border-bottom: 0; border-radius: 50% 50% 0 0; transform-origin: bottom center; transform: translateX(-50%) rotate(var(--angle)); opacity: .8; }
.fan-path:nth-child(1) { --angle: -28deg; color: var(--oxblood); }
.fan-path:nth-child(2) { --angle: 0deg; color: var(--teal); }
.fan-path:nth-child(3) { --angle: 28deg; color: #a76f21; }

.boundary-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.boundary-option { position: relative; display: block; border: 1px solid var(--line); padding: 16px 16px 16px 50px; cursor: pointer; }
.boundary-option input { position: absolute; left: 17px; top: 21px; width: 20px; height: 20px; accent-color: var(--teal); }
.boundary-frame { margin-top: 24px; padding: 25px; min-height: 130px; border: 8px double var(--oxblood); background: rgba(255,255,255,.55); }

.source-ladder { display: grid; gap: 12px; }
.source-step { display: grid; grid-template-columns: 68px 1fr 36px; align-items: center; min-height: 64px; border: 1px solid var(--line); padding: 10px 14px; background: white; cursor: pointer; text-align: left; }
.source-step[aria-pressed="true"] { border-color: var(--teal); box-shadow: inset 5px 0 var(--teal); }
.source-step b { font: italic 1.2rem var(--serif); color: var(--oxblood); }
.source-step i { font-style: normal; color: var(--teal); }

.quiz-question { border: 0; padding: 0; margin: 0; }
.quiz-question legend { font: 400 var(--step-1)/1.25 var(--serif); margin-bottom: 20px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-options label { min-height: 50px; border: 1px solid var(--line); padding: 12px 14px; cursor: pointer; }
.quiz-options input { margin-right: 10px; accent-color: var(--oxblood); }

.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; list-style: none; display: grid; grid-template-columns: 1fr 32px; gap: 20px; padding: 24px 0; font: 400 1.2rem var(--serif); }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: '+'; color: var(--oxblood); }
.faq-list details[open] summary::after { content: '−'; }
.faq-list details p { margin-top: 0; padding-bottom: 22px; }

.site-footer { color: #efe3da; background: #251d1b; }
.footer-statement { width: var(--shell); margin-inline: auto; padding-block: clamp(60px, 9vw, 120px); display: grid; grid-template-columns: 90px 1fr; gap: 30px; border-bottom: 1px solid rgba(255,255,255,.15); }
.footer-mark { width: 70px; height: 70px; border: 1px solid #d7a7a3; border-radius: 50%; box-shadow: 18px 0 0 -7px #251d1b, 18px 0 0 -6px #1f6962; }
.footer-statement p { margin: 0; font: 400 var(--step-3)/1.05 var(--serif); }
.footer-links { width: var(--shell); margin-inline: auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 38px; padding-block: 65px; }
.footer-links h2 { color: #d7a7a3; font: 700 .7rem var(--sans); text-transform: uppercase; letter-spacing: .18em; }
.footer-links a { display: block; padding: 7px 0; color: #efe3da; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.legal-operator { width: var(--shell); margin-inline: auto; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; border-top: 1px solid rgba(255,255,255,.15); padding: 28px 0; font-size: .78rem; color: #cfc1b8; }
.footer-bottom { width: var(--shell); margin-inline: auto; display: flex; justify-content: space-between; gap: 20px; padding: 18px 0 28px; font-size: .75rem; }
.footer-bottom .text-button { color: inherit; }

.cookie-bar { position: fixed; z-index: 80; left: 18px; right: 18px; bottom: 18px; max-width: 1080px; margin: auto; display: grid; grid-template-columns: 1fr auto; gap: 25px; align-items: center; padding: 20px; color: var(--ink); background: var(--paper); border: 1px solid var(--ink); box-shadow: 0 20px 70px rgba(0,0,0,.25); }
.cookie-bar p { margin: 5px 0 0; font-size: .8rem; }
.cookie-actions { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; }
.cookie-bar .button { min-height: 42px; padding: 8px 14px; }
.cookie-dialog { width: min(620px, calc(100vw - 28px)); border: 1px solid var(--ink); padding: 26px; color: var(--ink); background: var(--paper); }
.cookie-dialog::backdrop { background: rgba(37,29,27,.7); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.dialog-head h2 { font: 400 1.7rem var(--serif); }
.dialog-head button { width: 44px; height: 44px; border: 0; background: transparent; font-size: 1.7rem; cursor: pointer; }

@media (max-width: 960px) {
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { padding-left: 20px; }
  .hero-visual { min-height: 520px; }
  .chapter-strip { grid-template-columns: 1fr 1fr; }
  .chapter-strip a:nth-child(2) { border-right: 0; }
  .chapter-strip a:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section-head, .method-image-grid, .lead-section { grid-template-columns: 1fr; }
  .section-head { gap: 24px; }
  .developing-room { grid-template-columns: 1fr; }
  .developing-controls { position: static; grid-template-columns: repeat(4, 1fr); }
  .developing-controls button { min-height: 66px; grid-template-columns: 1fr; text-align: center; }
  .developing-progress { grid-column: 1; }
  .mechanism-grid { grid-template-columns: 1fr; }
  .mechanism-card:nth-child(n) { transform: none; min-height: 250px; }
  .content-grid { grid-template-columns: 1fr; }
  .content-aside { position: static; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 20px; }
  .scenario-controls { grid-template-columns: 1fr; }
}

@media (max-width: 660px) {
  :root { --shell: min(100% - 28px, 1220px); }
  .site-header { min-height: 72px; }
  .wordmark { padding: 11px 14px; gap: 10px; }
  .wordmark-rule { width: 30px; height: 25px; }
  .wordmark strong { font-size: .82rem; }
  .wordmark small { font-size: .55rem; letter-spacing: .08em; }
  .index-toggle { min-width: 78px; padding: 10px 14px; }
  .index-toggle .index-glyph { display: none; }
  .site-index { padding: 22px; }
  .index-columns { grid-template-columns: 1fr; padding-block: 26px; gap: 24px; }
  .index-columns a { min-height: 48px; font-size: 1.15rem; }
  .hero-copy { padding: 62px 14px; }
  .hero h1 { font-size: clamp(3rem, 14vw, 4.5rem); }
  .hero-visual { min-height: 390px; }
  .chapter-strip { grid-template-columns: 1fr; }
  .chapter-strip a { min-height: 64px; border-right: 0; border-bottom: 1px solid var(--line); }
  .developing-controls { grid-template-columns: 1fr 1fr; }
  .developing-stage { min-height: 610px; }
  .specimen-panel { inset: calc(var(--layer) * 9px) 0 auto calc(var(--layer) * 5px); min-height: 540px; }
  .panel-example { grid-template-columns: 1fr; }
  .cards-two, .sorting-zones, .boundary-options { grid-template-columns: 1fr; }
  .content-aside { grid-template-columns: 1fr; }
  .prose table { display: block; overflow-x: auto; }
  .footer-statement { grid-template-columns: 1fr; }
  .footer-links, .legal-operator { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .cookie-bar { grid-template-columns: 1fr; left: 8px; right: 8px; bottom: 8px; }
  .cookie-actions .button { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
  .site-header, .cookie-bar, .cookie-dialog, .button, .site-footer { display: none !important; }
  body { background: #fff; color: #000; }
  .page-hero, .section { padding-block: 30px; }
}