/* Syntax interface rework. Existing palette tokens remain the source of color. */
:root {
  --layout-max: 1560px;
  --layout-gutter: clamp(18px, 4.8vw, 76px);
  --panel-gap: 18px;
}

html { scroll-padding-top: 84px; }

/* Welcome: editorial learning console */
.welcome-stage {
  background-color: var(--canvas);
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    radial-gradient(ellipse at 78% 18%, rgba(245,158,11,.07), transparent 38rem);
  background-size: 64px 64px, 64px 64px, auto;
  background-position: center top;
}

.welcome-nav {
  min-height: 68px;
  padding-inline: var(--layout-gutter);
  border-color: var(--line);
  background: var(--glass);
}

.welcome-brand { gap: 10px; font-size: 19px; }
.welcome-brand-mark { width: 31px; height: 31px; border-radius: 5px; }
.welcome-nav nav { gap: clamp(14px, 2.2vw, 32px); }
.welcome-nav nav a { position: relative; padding-block: 24px; font-size: 13px; }
.welcome-nav nav a::after {
  position: absolute;
  right: 0;
  bottom: 15px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.welcome-nav nav a:hover::after { transform: scaleX(1); }
.welcome-nav-actions { gap: 8px; }
.welcome-nav-cta { min-height: 38px; padding-inline: 13px; border-radius: 4px; }

.welcome-hero {
  width: min(var(--layout-max), calc(100% - 2 * var(--layout-gutter)));
  max-width: none;
  min-height: min(690px, calc(100svh - 68px));
  grid-template-columns: minmax(0, .88fr) minmax(440px, 1.12fr);
  gap: clamp(36px, 7vw, 116px);
  padding: clamp(64px, 9vw, 132px) 0 clamp(48px, 7vw, 96px);
}

.welcome-copy { max-width: 610px; }
.welcome-kicker { margin-bottom: 19px; font-size: 10px; letter-spacing: .15em; }
.welcome-copy h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(54px, 6.7vw, 94px);
  line-height: .94;
  letter-spacing: -.075em;
}
.welcome-copy h1 span { display: block; margin-top: 7px; }
.welcome-intro { max-width: 47ch; margin-top: 22px; font-size: 16px; line-height: 1.7; }
.welcome-hero-actions { gap: 10px; margin: 27px 0 22px; }
.welcome-primary { min-height: 46px; padding-inline: 17px; border-radius: 4px; font-size: 13px; }
.welcome-secondary { min-height: 46px; padding-inline: 15px; border-radius: 4px; font-size: 13px; }
.welcome-proof { align-items: flex-start; max-width: 520px; padding-top: 17px; border-top: 1px solid var(--line); font-size: 12px; line-height: 1.65; }
.proof-avatars { flex: none; padding-top: 1px; }
.welcome-runtime-truth { max-width: 60ch; margin-top: 15px!important; padding-left: 11px; border-left: 1px solid var(--line2); color: var(--quiet)!important; font-size: 12px!important; }

.welcome-visual {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-content: center;
  align-items: stretch;
  gap: 9px;
  min-width: 0;
  min-height: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: linear-gradient(145deg, rgba(255,255,255,.025), transparent 48%), var(--panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.07), 0 28px 75px rgba(0,0,0,.24);
}
.welcome-visual::before {
  grid-column: 1 / -1;
  align-self: center;
  margin: -18px -18px 7px;
  padding: 11px 17px;
  border-bottom: 1px solid var(--line);
  color: var(--quiet);
  content: "LIVE LESSON PREVIEW  /  PYTHON 001";
  font: 10px/1.4 var(--mono);
  letter-spacing: .13em;
}
.welcome-visual-halo, .welcome-links { display: none; }
.welcome-code-card {
  position: relative;
  grid-column: 1 / -1;
  width: 100%;
  min-height: 275px;
  padding: 18px;
  border-color: var(--line2);
  border-radius: 4px;
  background: var(--canvas);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
  animation: none;
}
.welcome-code-top { padding-bottom: 12px; }
.welcome-code-top b { margin-right: auto; margin-left: 10px; font-weight: 500; letter-spacing: .1em; }
.welcome-code-meta { margin: 14px 0 9px; }
.welcome-code { min-height: 105px; margin: 0 0 11px; padding: 16px; border-radius: 3px; font-size: 13px; }
.welcome-result { min-height: 39px; padding-inline: 11px; border-radius: 3px; }
.welcome-code-foot { margin: 11px 0 0; }
.welcome-node {
  position: static;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 0;
  min-height: 37px;
  padding: 5px 7px;
  border-radius: 3px;
  font-size: 12px;
  white-space: nowrap;
}
.welcome-node span { font-size: 10px; }
.welcome-agent {
  position: static;
  grid-column: 1 / -1;
  justify-self: end;
  margin-top: 3px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.agent-spark { border-radius: 3px; }

.welcome-language-strip, .welcome-method, .welcome-courses {
  width: min(var(--layout-max), calc(100% - 2 * var(--layout-gutter)));
  max-width: none;
  padding: 43px 0;
}
.welcome-language-strip { border-top: 1px solid var(--line2); }
.strip-label { margin-bottom: 16px; font-size: 10px; letter-spacing: .14em; }
.welcome-marquee-track { gap: 0 21px; }
.ticker-language {
  min-height: 34px;
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  font-size: 12px;
}
.ticker-language i { min-width: 25px; }
.welcome-section-head { align-items: end; margin-bottom: 24px; }
.welcome-section-head h2, .coach-copy h2 { font-size: clamp(34px, 4.3vw, 58px); line-height: .99; }
.welcome-section-head>p { max-width: 48ch; margin: 0; font-size: 14px; line-height: 1.7; }
.method-grid { gap: 0; border-top: 1px solid var(--line2); border-bottom: 1px solid var(--line2); }
.method-card {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-content: start;
  column-gap: 15px;
  min-height: 190px;
  padding: 19px 20px 18px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.method-card + .method-card { padding-left: 20px; border-left: 1px solid var(--line); }
.method-number { grid-row: 1 / span 3; font-size: 12px; }
.method-illustration { min-height: 55px; }
.method-card h3 { margin: 13px 0 5px; font-size: 16px; letter-spacing: -.025em; }
.method-card p { margin: 0; font-size: 13px; line-height: 1.65; }
.method-illustration i { color: var(--accent); font: 12px var(--mono); font-style: normal; }
.try-chip, .build-illustration span { border-radius: 3px; }

.welcome-courses { padding-bottom: 54px; }
.welcome-course-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line2); border-left: 1px solid var(--line2); }
.welcome-course-card {
  min-height: 218px;
  padding: 17px;
  border: 0;
  border-right: 1px solid var(--line2);
  border-bottom: 1px solid var(--line2);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: background-color var(--motion-fast, 140ms) ease, transform var(--motion-fast, 140ms) ease,
    box-shadow var(--motion-fast, 140ms) ease;
}
.welcome-course-card:hover, .welcome-course-card:focus-within {
  transform: translateY(-2px);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--control-border-hover, rgba(245,158,11,.48));
}
.course-card-top { display: grid; grid-template-columns: 31px 1fr auto; align-items: center; gap: 9px; }
.course-mark { width: 30px; height: 30px; border-radius: 3px; }
.course-level { font-size: 10px; }
.course-arrow { font: 10px var(--mono); }
.welcome-course-card h3 { margin: 21px 0 6px; font-size: 18px; letter-spacing: -.035em; }
.welcome-course-card>p { min-height: 56px; margin: 0 0 13px; font-size: 12px; line-height: 1.55; }
.course-meta { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--line); font: 10px/1.5 var(--mono); letter-spacing: .09em; }
.welcome-course-card>button { min-height: 37px; margin-top: 8px; padding: 0; border: 0; border-radius: 0; color: var(--ink); background: transparent; text-align: left; font-size: 12px; }
.welcome-course-card>button b { margin-left: 5px; color: var(--accent); }
.welcome-courses-foot { display: flex; justify-content: space-between; gap: 20px; padding-top: 15px; color: var(--muted); font-size: 12px; }
.welcome-courses-foot button { flex: none; padding: 0; border: 0; color: var(--accent); background: transparent; font: 12px var(--mono); }

.welcome-coach {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  gap: clamp(35px, 8vw, 120px);
  width: min(var(--layout-max), calc(100% - 2 * var(--layout-gutter)));
  max-width: none;
  padding: 43px;
  margin: 0 auto 54px;
  border: 1px solid var(--line2);
  border-radius: 6px;
  background: linear-gradient(120deg, rgba(245,158,11,.035), transparent 46%), var(--panel);
}
.coach-copy { align-self: center; }
.coach-copy .welcome-kicker { margin-bottom: 14px; }
.coach-copy>p { max-width: 44ch; font-size: 14px; line-height: 1.7; }
.coach-copy ul { display: grid; gap: 11px; margin: 22px 0; padding: 0; list-style: none; }
.coach-copy li { color: var(--muted); font-size: 13px; }
.coach-copy li i { margin-right: 8px; color: var(--signal); font: 10px var(--mono); font-style: normal; }
.coach-open { min-height: 42px; padding-inline: 13px; border-radius: 4px; }
.coach-demo { border-radius: 5px; background: var(--canvas); box-shadow: none; }
.coach-demo-top, .coach-demo-form { border-radius: 0; }
.coach-demo-chat { min-height: 138px; }
.coach-prompts { flex-wrap: wrap; }
.coach-prompts button { border-radius: 3px; }
.welcome-footer {
  display: grid;
  grid-template-columns: auto minmax(130px, .7fr) minmax(300px, 1.3fr) auto;
  gap: 22px;
  padding: 22px var(--layout-gutter);
  border-top: 1px solid var(--line2);
}
.welcome-footer>span { color: var(--quiet); font-size: 12px; }
.welcome-footer .footer-links { gap: 7px 15px; }
.welcome-footer .footer-links a { font-size: 12px; }
.welcome-footer #welcomeFooterStart { min-height: 38px; padding-inline: 12px; border-radius: 4px; font-size: 12px; }

/* Learning console: fixed rails, ruled work area, compact progress data. */
#appShell.app {
  width: 100%;
  max-width: none;
  grid-template-columns: 244px minmax(0, 1fr) 320px;
  background: var(--canvas);
}
#appShell.app.sidebar-collapsed { grid-template-columns: 68px minmax(0, 1fr); }
#appShell .sidebar, #appShell .rightbar { background: var(--panel); }
#appShell .sidebar { padding: 24px 14px 17px; border-right-color: var(--line2); }
#appShell .brand { padding-inline: 8px; margin-bottom: 25px; }
#appShell .nav-label { margin: 18px 0 7px; font-size: 10px; letter-spacing: .16em; }
#appShell .nav { gap: 2px; }
#appShell .nav-btn { min-height: 40px; padding-inline: 9px; border-radius: 4px; font-size: 12px; }
#appShell.app.sidebar-collapsed .nav-btn { font-size: 0; }
#appShell .nav-btn.active { border-color: var(--line2); background: linear-gradient(90deg, var(--accent-soft), transparent 82%), var(--raised); box-shadow: inset 2px 0 0 var(--accent); }
#appShell .side-rule { margin-block: 11px; }
#appShell .streak-card { margin-top: auto; border-radius: 5px; background: var(--raised); }
#appShell .profile { margin-top: 11px; }
#appShell .sidebar-footer-links { gap: 5px 8px; }
#appShell .sidebar-footer-links a { border-radius: 3px; }
#appShell .main { min-height: 100vh; padding: 20px clamp(20px, 3vw, 47px) 72px; }
#appShell .topbar { min-height: 52px; margin-bottom: 31px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
#appShell .breadcrumb { font: 10px/1.5 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
#appShell .breadcrumb b { color: var(--ink); }
#appShell .top-actions { gap: 6px; }
#appShell .icon-button, #appShell .lang-select, #appShell .sign-in-button { min-height: 36px; border-radius: 4px; }
#appShell .icon-button { width: 36px; }
#appShell .lang-select { padding-inline: 5px 9px; }
#appShell .rightbar { padding: 21px 16px; border-left-color: var(--line2); }
#appShell .right-head { min-height: 38px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
#appShell .tutor-card { border-radius: 4px; box-shadow: none; }
#appShell .quick-exam { border-radius: 4px; }

#dashboardView, #subpage { max-width: 1480px; }
#dashboardView .welcome {
  align-items: end;
  margin: 0 0 18px;
  padding-bottom: 21px;
  border-bottom: 1px solid var(--line2);
}
#dashboardView .welcome h1 { font-size: clamp(35px, 3.8vw, 54px); line-height: .99; }
#dashboardView .welcome p { margin-top: 12px; font-size: 14px; }
#dashboardView .week-chip { border-radius: 3px; }
#dashboardView .hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .72fr);
  align-items: center;
  gap: clamp(22px, 4vw, 55px);
  min-height: 270px;
  padding: clamp(23px, 3vw, 40px);
  border-color: var(--line2);
  border-radius: 5px;
  background: linear-gradient(110deg, rgba(245,158,11,.045), transparent 56%), var(--panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}
#dashboardView .hero-content { max-width: 620px; }
#dashboardView .hero-label { font-size: 10px; letter-spacing: .16em; }
#dashboardView .hero h2 { font-size: clamp(29px, 3vw, 43px); line-height: 1.03; }
#dashboardView .hero p { max-width: 48ch; margin: 12px 0 18px; font-size: 13px; line-height: 1.65; }
#dashboardView .hero-actions { gap: 13px; }
#dashboardView .hero-art { position: relative; inset: auto; width: 100%; height: auto; opacity: 1; }
#dashboardView .code-window {
  position: relative;
  inset: auto;
  width: 100%;
  min-height: 176px;
  padding: 13px;
  border-radius: 4px;
  background: var(--canvas);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
  animation: none;
}
#dashboardView .hero-proof { position: static; display: flex; align-items: center; gap: 8px; margin-top: 9px; color: var(--quiet); font: 10px/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
#dashboardView .hero-proof-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); }
#dashboardView .hero-grid { opacity: .07; }
#dashboardView .stats { gap: 0; margin: 22px 0 28px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel); }
#dashboardView .stat-card { min-height: 74px; padding: 12px 15px; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
#dashboardView .stat-card + .stat-card { border-left: 1px solid var(--line); }
#dashboardView .stat-icon { width: 29px; height: 29px; border-radius: 3px; }
#dashboardView .stat-copy span { font-size: 10px; letter-spacing: .12em; }
#dashboardView .stat-copy b { font-size: 17px; }
#dashboardView .stat-copy small { font-size: 12px; }
#dashboardView .quest-hub { padding: 19px; border-radius: 5px; background: var(--panel); box-shadow: inset 0 1px 0 rgba(255,255,255,.06); }
#dashboardView .quest-hub::after { opacity: .45; }
#dashboardView .quest-hub-head { margin-bottom: 13px; }
#dashboardView .quest-kicker { font-size: 10px; letter-spacing: .15em; }
#dashboardView .quest-hub-head h2 { font-size: 23px; }
#dashboardView .level-orb { border-radius: 4px; }
#dashboardView .level-progress { margin-bottom: 14px; border-radius: 3px; }
#dashboardView .quest-grid { gap: 8px; }
#dashboardView .quest-card { min-height: 140px; padding: 13px; border-radius: 4px; }
#dashboardView .quest-card-top { padding-bottom: 11px; border-bottom: 1px solid var(--line); }
#dashboardView .quest-icon { border-radius: 3px; }
#dashboardView .quest-card-copy b { font-size: 14px; }
#dashboardView .quest-card-copy span { font-size: 12px; line-height: 1.55; }
#dashboardView .puzzle-card { margin-top: 10px; border-radius: 4px; }
#dashboardView .section-heading { margin: 35px 0 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line2); }
#dashboardView .section-heading h2 { font-size: 21px; }
#dashboardView .section-heading p { font-size: 12px; }
#dashboardView .path-controls { grid-template-columns: minmax(0, 1fr) 210px minmax(155px, 190px); gap: 7px; }
#dashboardView .rank-switcher { border-radius: 4px; }
#dashboardView .rank-button, #dashboardView .stage-filter, #dashboardView .lesson-search { min-height: 38px; border-radius: 3px; }
#dashboardView .bottom-note { border-style: solid; border-radius: 3px; }

/* Course map: a measured vertical rail and lesson rows. */
#roadmap.stage-roadmap { gap: 8px; margin-top: 10px; }
.stage-map-overview { padding: 12px 15px; border-radius: 4px; background: var(--panel); box-shadow: inset 0 1px 0 rgba(255,255,255,.06); }
.stage-map-copy { gap: 5px; }
.stage-map-copy>span, .stage-map-count { font-size: 10px; letter-spacing: .13em; }
.stage-map-copy>b { font-size: 13px; }
.stage-roadmap>.stage { grid-template-columns: 34px minmax(0,1fr); gap: 0 10px; }
.stage-rail { padding-top: 17px; }
.stage-marker { width: 28px; height: 28px; border-radius: 4px; font-size: 10px; }
.stage-rail::after { top: 48px; bottom: -9px; }
.stage-panel { overflow: hidden; border-radius: 4px; background: var(--panel); box-shadow: none; }
.stage-toggle { min-height: 102px; grid-template-columns: minmax(0,1fr) minmax(110px,160px) minmax(78px, auto) 18px; gap: 15px; padding: 17px 19px; }
.stage-title { font-size: 18px; letter-spacing: -.03em; }
.stage-desc { margin-top: 5px; font-size: 12px; }
.stage-kicker { font-size: 10px; letter-spacing: .13em; }
.stage-progress-label { font: 12px var(--mono); }
.stage-status { font-size: 10px; letter-spacing: .11em; }
.stage-details { padding: 0 19px 17px; }
.stage-details-head { padding: 14px 0; }
.stage-details-head>div>span { font-size: 10px; letter-spacing: .13em; }
.stage-details-head>div>b { font-size: 12px; }
.stage-launch { min-height: 36px; padding-inline: 11px; border-radius: 3px; }
.stage-lessons { gap: 6px; }
.stage-lessons li { min-width: 0; }
.stage-lesson { min-height: 54px; border-radius: 3px; }
.stage-lesson-number { width: 29px; height: 29px; border-radius: 3px; }
.stage-lesson-copy b { font-size: 12px; }
.stage-lesson-copy small, .stage-lesson-state { font-size: 10px; }
.stage-hint { margin: 10px 0 0; font-size: 12px; }

/* Shared workspace pages and dialogs */
#subpage { padding-bottom: 34px; }
#subpage .page-heading { align-items: end; gap: 24px; margin: 4px 0 26px; padding-bottom: 19px; border-bottom: 1px solid var(--line2); }
#subpage .page-eyebrow { font-size: 10px; letter-spacing: .15em; }
#subpage .page-heading h1 { font-size: clamp(34px, 3.5vw, 48px); line-height: 1; }
#subpage .page-heading p { max-width: 65ch; font-size: 13px; line-height: 1.7; }
#subpage .subpage-banner { padding: 15px 17px; border-radius: 4px; box-shadow: none; }
#subpage .page-card, #subpage .badge-card, #subpage .leaderboard-panel, #subpage .leaderboard-profile-card, #subpage .lab-panel, #subpage .notes-list, #subpage .note-editor-shell { border-radius: 4px; box-shadow: inset 0 1px 0 rgba(255,255,255,.05); }
#subpage .page-card, #subpage .badge-card { padding: 16px; }
#subpage .page-grid, #subpage .badge-grid { gap: 8px; }
#subpage .setting-row { min-height: 64px; }
#subpage .language-card, #subpage .practice-tool-card, #subpage .project-card { border-radius: 4px; }
#subpage :is(input, textarea, select) { border-radius: 3px; }

.modal-backdrop { padding: 0; background: rgba(8,8,10,.82); }
.modal {
  width: min(780px, calc(100% - 32px));
  max-height: min(92dvh, 920px);
  border-radius: 5px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 32px 90px rgba(0,0,0,.52);
}
.modal-head { min-height: 53px; padding-inline: 20px; }
.modal-body { padding: 22px; }
.modal-footer { min-height: 58px; padding: 10px 20px; }
.modal-head .eyebrow { font-size: 10px; letter-spacing: .14em; }
.close-modal { width: 34px; height: 34px; border-radius: 3px; }
.lesson-title { font-size: clamp(23px, 3vw, 32px); }
.lesson-sub { max-width: 68ch; font-size: 13px; }
.lesson-callout { padding: 13px 15px; border-radius: 3px; }
.code-block { padding: 15px; border-radius: 3px; font-size: 13px; }
.exam-question { margin: 16px 0; font-size: clamp(21px, 2.5vw, 28px); }
.checkpoint-prompt { font-size: 13px; line-height: 1.6; }
.exam-options { gap: 8px; }
.exam-option { min-height: 51px; padding: 9px 10px; border-radius: 3px; font-size: 13px; }
.exam-option .letter { width: 26px; height: 26px; border-radius: 3px; }
.answer-review { border-radius: 3px; }

/* Shared public page shell and the plans/check-out surface. */
.standalone-page {
  background-image:
    linear-gradient(rgba(255,255,255,.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.014) 1px, transparent 1px);
  background-size: 64px 64px;
}
.standalone-nav, .standalone-footer { width: min(var(--layout-max), calc(100% - 2 * var(--layout-gutter))); }
.standalone-nav { min-height: 68px; border-bottom-color: var(--line2); }
.standalone-nav nav { gap: clamp(12px, 2vw, 27px); }
.standalone-nav nav a { font-size: 12px; }
.standalone-main { width: min(1120px, calc(100% - 2 * var(--layout-gutter))); padding: clamp(48px, 7vw, 90px) 0 86px; }
.standalone-hero { max-width: 900px; margin-bottom: 48px; padding-bottom: 26px; }
.standalone-hero h1 { max-width: 900px; font-size: clamp(46px, 7vw, 82px); }
.standalone-lede { max-width: 68ch; font-size: 15px; line-height: 1.75; }
.standalone-index { top: 97px; border-radius: 4px; }
.legal-copy, .legal-content > section, .faq-list, .faq-next, .support-panel, .status-panel, .roadmap-panel { border-radius: 4px; }
.standalone-footer { min-height: 72px; border-top-color: var(--line2); }
.standalone-footer nav { gap: 15px; }
.plans-main { width: min(1240px, calc(100% - 2 * var(--layout-gutter))); padding-top: clamp(48px, 7vw, 88px); }
.plans-hero-row { grid-template-columns: minmax(0,1fr) 280px; gap: clamp(24px, 5vw, 72px); }
.plans-hero h1 { max-width: 820px; font-size: clamp(48px, 7vw, 84px); }
.plans-trust, .plan-card, .plan-compare-wrap, .billing-current, .billing-table-wrap { border-radius: 4px; box-shadow: inset 0 1px 0 rgba(255,255,255,.06); }
.plan-picker, .plan-compare, .billing-section { padding-block: 36px; }
.plan-card { padding: 20px; }
.plan-card.is-featured { box-shadow: inset 2px 0 0 var(--accent), inset 0 1px 0 rgba(255,255,255,.08); }
.plan-card-title { font-size: 25px; }
.plan-card-action { min-height: 45px; border-radius: 3px; }
.duration-switch { border-radius: 4px; }
.duration-switch button { border-radius: 3px; }
.checkout-dialog { border-radius: 5px; }
.checkout-shell { padding: 22px; }
.checkout-summary, .payment-progress, .payment-address-card, .payment-amount-card { border-radius: 3px; }

/* Stage practicals and assessments use the same focused work surface as lessons. */
#modal.stage-detail-shell, #modal.practical-shell {
  display: grid;
  grid-template-rows: auto minmax(0,1fr) auto;
  width: min(1120px, calc(100vw - 48px));
  height: min(860px, calc(100dvh - 48px));
  max-height: none;
}
#modal.stage-detail-shell .modal-body, #modal.practical-shell .modal-body { min-height: 0; overflow: auto; }
#modal.stage-detail-shell .modal-body { display: flex; flex-direction: column; justify-content: center; padding: clamp(24px, 4vw, 54px); }
#modal.stage-detail-shell .lesson-title { font-size: clamp(34px, 5vw, 58px); }
#modal.stage-detail-shell .lesson-sub { max-width: 60ch; margin-bottom: 24px; font-size: 14px; }
#modal.stage-detail-shell .answer-options { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px; }
#modal.stage-detail-shell .answer-option { display: grid; grid-template-columns: 40px minmax(0,1fr) auto; align-items: center; gap: 11px; min-height: 66px; border-radius: 3px; font-size: 13px; }
#modal.stage-detail-shell .stage-modal-footer { min-height: 70px; }
#modal.stage-detail-shell .stage-modal-footer .checkpoint-meta { margin-right: auto; }
#modal.assessment-shell {
  display: grid;
  grid-template-rows: auto minmax(0,1fr) auto;
  width: 100vw;
  height: 100dvh;
  max-height: none;
  border-radius: 0;
}
#modal.assessment-shell .modal-head, #modal.assessment-shell .modal-footer { padding-inline: clamp(18px, 4vw, 64px); }
#modal.assessment-shell .modal-body { width: min(920px, 100%); margin-inline: auto; padding: clamp(22px, 5vh, 58px) clamp(18px, 4vw, 58px); }
#modal.assessment-shell .checkpoint-body { align-self: stretch; }
#modal.assessment-shell .checkpoint-meta { margin-block: 13px 22px; }
#modal.assessment-shell .exam-matrix { gap: 6px; margin: 20px 0 27px; }
#modal.assessment-shell .exam-matrix-cell { width: 36px; height: 36px; border-radius: 3px; }
#modal.assessment-shell .exam-question-kind { font-size: 10px; letter-spacing: .13em; }
#modal.assessment-shell .exam-options { gap: 9px; }
#modal.assessment-shell .exam-option { min-height: 58px; padding: 11px 13px; font-size: 14px; }
#modal.assessment-shell .modal-footer .exam-nav-actions { display: flex; gap: 8px; margin-left: auto; }
#modal.practical-shell .practical-body {
  display: grid;
  grid-template-columns: minmax(250px,.72fr) minmax(380px,1.28fr);
  align-content: start;
  align-items: start;
  gap: 13px 24px;
  padding: clamp(22px, 4vw, 48px);
}
#modal.practical-shell .practical-progress { grid-column: 1 / -1; }
#modal.practical-shell .lesson-title { grid-column: 1; margin-top: 9px; font-size: clamp(30px,4vw,47px); }
#modal.practical-shell .lesson-sub { grid-column: 1; font-size: 14px; }
#modal.practical-shell .practical-instructions { grid-column: 1; }
#modal.practical-shell .practical-terminal { grid-column: 2; grid-row: 2 / span 4; margin: 0; }
#modal.practical-shell .practical-actions, #modal.practical-shell .practical-feedback { grid-column: 1; }
#modal.practical-shell .practical-code-editor { min-height: 250px; }
#modal.practical-shell .modal-footer { min-height: 66px; }

@media (max-width: 1180px) {
  #appShell.app { grid-template-columns: 218px minmax(0,1fr); }
  #appShell .main { padding-inline: 24px; }
  #dashboardView .hero { grid-template-columns: minmax(0,1fr) minmax(220px,.75fr); }
  .welcome-hero { grid-template-columns: minmax(0,.9fr) minmax(360px,1.1fr); gap: 42px; }
  .welcome-coach { padding: 30px; gap: 35px; }
}

@media (max-width: 900px) {
  .welcome-hero { min-height: 0; grid-template-columns: minmax(0,1fr); gap: 36px; padding-block: 66px 48px; }
  .welcome-copy { max-width: 730px; }
  .welcome-copy h1 { max-width: 700px; font-size: clamp(56px, 10vw, 82px); }
  .welcome-visual { max-width: 720px; }
  .welcome-coach { grid-template-columns: 1fr; }
  .welcome-footer { grid-template-columns: auto 1fr; }
  .welcome-footer .footer-links { grid-column: 1 / -1; grid-row: 2; }
  .welcome-footer #welcomeFooterStart { grid-column: 2; grid-row: 1; justify-self: end; }
  #appShell .main { padding-inline: 20px; }
  #dashboardView .hero { grid-template-columns: minmax(0,1fr) minmax(210px,.8fr); }
  #dashboardView .stats { grid-template-columns: repeat(2,minmax(0,1fr)); }
  #dashboardView .stat-card:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  #dashboardView .stat-card:nth-child(4) { border-top: 1px solid var(--line); }
  .welcome-course-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 760px) {
  :root { --layout-gutter: 17px; }
  .welcome-nav { min-height: 58px; }
  .welcome-nav nav { display: none; }
  .welcome-hero { width: calc(100% - 2 * var(--layout-gutter)); padding-block: 48px 36px; }
  .welcome-copy h1 { font-size: clamp(47px, 13vw, 70px); }
  .welcome-intro { margin-top: 15px; font-size: 14px; }
  .welcome-hero-actions { margin-block: 21px 18px; }
  .welcome-proof { font-size: 12px; }
  .welcome-visual { grid-template-columns: repeat(2,minmax(0,1fr)); padding: 10px; }
  .welcome-visual::before { margin: -10px -10px 0; padding-inline: 10px; font-size: 10px; }
  .welcome-code-card { min-height: 0; padding: 12px; }
  .welcome-node { justify-content: flex-start; min-height: 35px; }
  .welcome-agent { grid-column: 1 / -1; }
  .welcome-language-strip, .welcome-method, .welcome-courses, .welcome-coach { width: calc(100% - 2 * var(--layout-gutter)); padding-block: 31px; }
  .welcome-section-head { flex-direction: column; gap: 8px; align-items: flex-start; }
  .welcome-section-head h2, .coach-copy h2 { font-size: clamp(34px, 10vw, 48px); }
  .method-grid { grid-template-columns: 1fr; }
  .method-card { min-height: 0; grid-template-columns: 35px minmax(0,1fr); padding: 17px 0; }
  .method-card + .method-card { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .method-number { grid-row: 1 / span 3; }
  .method-illustration { min-height: 43px; }
  .welcome-course-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .welcome-course-card { min-height: 0; padding: 12px; }
  .welcome-course-card>p { min-height: 0; }
  .welcome-courses-foot { flex-direction: column; gap: 11px; }
  .welcome-coach { gap: 23px; padding-inline: 17px; }
  .welcome-footer { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 12px; padding: 17px var(--layout-gutter); }
  .welcome-footer>span { display: none; }
  .welcome-footer .footer-links { grid-column: 1 / -1; grid-row: 2; }
  .welcome-footer #welcomeFooterStart { grid-column: 1 / -1; grid-row: 3; width: 100%; }

  #appShell.app { display: block; }
  #appShell .main { padding: 12px 16px 80px; }
  #appShell .topbar { min-height: 45px; margin-bottom: 24px; padding-bottom: 9px; }
  #appShell .breadcrumb { font-size: 10px; }
  #appShell .top-actions { gap: 4px; }
  #appShell .top-actions .ui-language-select, #appShell .top-actions #searchButton { display: none; }
  #dashboardView .welcome { align-items: flex-start; gap: 12px; margin-bottom: 14px; padding-bottom: 15px; }
  #dashboardView .welcome h1 { font-size: clamp(34px, 9vw, 46px); }
  #dashboardView .welcome p { font-size: 12px; }
  #dashboardView .week-chip { flex: none; font-size: 10px; }
  #dashboardView .hero { grid-template-columns: minmax(0,1fr); gap: 20px; min-height: 0; padding: 20px; }
  #dashboardView .hero h2 { font-size: 29px; }
  #dashboardView .hero-art { display: block; }
  #dashboardView .code-window { min-height: 140px; }
  #dashboardView .stats { margin: 14px 0 21px; }
  #dashboardView .stat-card { min-height: 63px; padding: 9px; }
  #dashboardView .stat-card:nth-child(2), #dashboardView .stat-card:nth-child(4) { border-left: 1px solid var(--line); }
  #dashboardView .stat-icon { width: 25px; height: 25px; }
  #dashboardView .stat-copy span { font-size: 10px; }
  #dashboardView .stat-copy b { font-size: 13px; }
  #dashboardView .stat-copy small { font-size: 12px; }
  #dashboardView .quest-hub { padding: 13px; }
  #dashboardView .quest-hub-head h2 { font-size: 19px; }
  #dashboardView .quest-grid { grid-template-columns: 1fr; }
  #dashboardView .quest-card { min-height: 112px; }
  #dashboardView .section-heading { margin-top: 27px; }
  #dashboardView .path-controls { grid-template-columns: minmax(0,1fr) minmax(120px,.75fr); }
  #dashboardView .rank-switcher { grid-column: 1 / -1; }
  .stage-map-overview { grid-template-columns: minmax(0,1fr) 90px; }
  .stage-map-count { display: none; }
  .stage-roadmap>.stage { grid-template-columns: 28px minmax(0,1fr); gap: 0 8px; }
  .stage-rail { padding-top: 14px; }
  .stage-marker { width: 25px; height: 25px; }
  .stage-rail::after { top: 43px; }
  .stage-toggle { min-height: 94px; grid-template-columns: minmax(0,1fr) minmax(92px,.55fr) 17px; gap: 7px; padding: 13px 11px; }
  .stage-title { font-size: 15px; }
  .stage-desc { display: -webkit-box; overflow: hidden; white-space: normal; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .stage-status { grid-column: 1; grid-row: 2; justify-self: start; margin-top: 4px; }
  .stage-chevron { grid-column: 3; grid-row: 1 / span 2; }
  .stage-details { padding: 0 11px 12px; }
  .stage-details-head { align-items: flex-start; flex-direction: column; }
  .stage-launch { width: 100%; min-height: 42px; }
  .stage-lessons { grid-template-columns: minmax(0,1fr); }
  #subpage .page-heading { align-items: flex-start; flex-direction: column; margin-bottom: 20px; }
  #subpage .page-heading h1 { font-size: clamp(32px, 9vw, 42px); }

  .standalone-nav, .standalone-footer, .standalone-main { width: calc(100% - 34px); }
  .standalone-nav { min-height: 58px; }
  .standalone-nav nav, .standalone-footer nav { gap: 10px; }
  .standalone-nav nav a, .standalone-footer nav a { font-size: 12px; }
  .standalone-main, .plans-main { padding-top: 45px; padding-bottom: 58px; }
  .standalone-hero { margin-bottom: 31px; }
  .standalone-hero h1 { font-size: clamp(42px, 12vw, 60px); }
  .standalone-lede { font-size: 13px; }
  .plans-hero-row { grid-template-columns: minmax(0,1fr); gap: 17px; }
  .plans-hero h1 { font-size: clamp(44px, 12vw, 62px); }
  .plan-picker, .plan-compare, .billing-section { padding-block: 26px; }
  .plan-grid { grid-template-columns: 1fr; }
  .plan-card { padding: 17px; }
  .plan-card-top { min-height: 0; padding-bottom: 13px; }
  .plan-faq { grid-template-columns: 1fr; gap: 13px; }
  .modal { width: calc(100% - 16px); max-height: 96dvh; }
  .modal-head { min-height: 48px; padding-inline: 12px; }
  .modal-body { padding: 14px 12px; }
  .modal-footer { padding: 8px 10px; }
  #modal.stage-detail-shell, #modal.practical-shell { width: 100vw; height: 100dvh; border-radius: 0; }
  #modal.stage-detail-shell .modal-body { padding: 24px 16px; }
  #modal.stage-detail-shell .answer-options { grid-template-columns: 1fr; }
  #modal.stage-detail-shell .stage-modal-footer { align-items: stretch; flex-wrap: wrap; }
  #modal.stage-detail-shell .stage-modal-footer .checkpoint-meta { width: 100%; }
  #modal.stage-detail-shell .stage-modal-footer button { flex: 1; min-width: 130px; }
  #modal.assessment-shell .modal-head, #modal.assessment-shell .modal-footer { padding-inline: 12px; }
  #modal.assessment-shell .modal-body { padding: 22px 14px; }
  #modal.assessment-shell .exam-option { min-height: 50px; font-size: 13px; }
  #modal.practical-shell .practical-body { display: flex; flex-direction: column; gap: 10px; padding: 19px 14px; }
  #modal.practical-shell .practical-body > * { flex: 0 0 auto; }
  #modal.practical-shell .lesson-title, #modal.practical-shell .lesson-sub, #modal.practical-shell .practical-instructions,
  #modal.practical-shell .practical-terminal, #modal.practical-shell .practical-actions, #modal.practical-shell .practical-feedback { grid-column: auto; grid-row: auto; }
  #modal.practical-shell .practical-code-editor { min-height: 160px; }
}

@media (max-width: 430px) {
  .welcome-course-grid { grid-template-columns: 1fr; }
  .welcome-course-card { padding: 14px; }
  .welcome-nav-actions { gap: 4px; }
  .welcome-nav-actions .ui-language-select { width: 72px; min-width: 68px; }
  .welcome-nav-cta { min-width: 88px; padding-inline: 8px; font-size: 12px; }
  #appShell .main { padding-inline: 12px; }
  #dashboardView .welcome { flex-direction: column; }
  #dashboardView .stats { grid-template-columns: repeat(2,minmax(0,1fr)); }
  #dashboardView .stat-card { border-top: 1px solid var(--line); }
  #dashboardView .stat-card:nth-child(-n+2) { border-top: 0; }
  #dashboardView .stat-card:nth-child(3) { border-left: 0; }
  #dashboardView .path-controls { grid-template-columns: 1fr; }
  #dashboardView .rank-switcher { grid-column: auto; }
  .stage-toggle { grid-template-columns: minmax(0,1fr) 93px 15px; gap: 5px; }
  .stage-progress-label small { display: none; }
  .stage-status { font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-nav nav a::after { transition: none; }
  .welcome-code-card, #dashboardView .code-window { animation: none!important; }
}

/* Clear action hierarchy: filled amber actions, quiet outlined controls. */
:root {
  --control-border: rgba(255,255,255,.13);
  --control-border-hover: rgba(245,158,11,.48);
  --control-glass: linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  --control-inset: inset 0 1px 0 rgba(255,255,255,.055);
  --control-shadow: 0 1px 2px rgba(0,0,0,.18);
  --motion-fast: 140ms;
  --motion-state: 200ms;
}

button:not([data-button-plain]), [role="button"] {
  border: 1px solid var(--control-border);
  border-radius: 5px;
  color: var(--ink);
  background-color: #111217;
  background-image: var(--control-glass);
  box-shadow: var(--control-inset);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  transition: color var(--motion-fast) ease, border-color var(--motion-fast) ease,
    background-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease,
    transform var(--motion-fast) ease;
  touch-action: manipulation;
}

button:not([data-button-plain]):focus-visible, [role="button"]:focus-visible {
  outline: 2px solid color-mix(in srgb,var(--accent) 78%,white);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(245,158,11,.12);
}

button:not([data-button-plain]):disabled, [role="button"][aria-disabled="true"] {
  color: var(--quiet);
  border-color: rgba(255,255,255,.08);
  background: #101116;
  box-shadow: none;
  filter: none;
  opacity: .52;
  transform: none;
  cursor: not-allowed;
}

@media (hover:hover) and (pointer:fine) {
  button:not([data-button-plain]):hover:not(:disabled), [role="button"]:hover:not([aria-disabled="true"]) {
    border-color: var(--control-border-hover);
    color: var(--ink);
    background-color: #17181d;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
    transform: translateY(-1px);
  }
  button:not([data-button-plain]):active:not(:disabled), [role="button"]:active:not([aria-disabled="true"]) {
    transform: translateY(0) scale(.985);
  }
}

:is(button,a):is(.primary-button,.solid-button,.auth-submit,.lab-run,.welcome-primary,.welcome-nav-cta,.coach-open,.send-button,.leaderboard-join) {
  border: 1px solid #f5b942;
  border-radius: 5px;
  color: #11100d;
  background: #f59e0b;
  background-image: linear-gradient(180deg,rgba(255,255,255,.12),transparent 68%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.24), 0 2px 5px rgba(0,0,0,.2);
  font-weight: 650;
  text-decoration: none;
  transition: color var(--motion-fast) ease, border-color var(--motion-fast) ease,
    background-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease,
    transform var(--motion-fast) ease;
}

@media (hover:hover) and (pointer:fine) {
  :is(button,a):is(.primary-button,.solid-button,.auth-submit,.lab-run,.welcome-primary,.welcome-nav-cta,.coach-open,.send-button,.leaderboard-join):hover:not(:disabled) {
    border-color: #ffc454;
    color: #08080a;
    background-color: #ffb21a;
    background-image: linear-gradient(180deg,rgba(255,255,255,.16),transparent 70%);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 4px 12px rgba(245,158,11,.2);
    transform: translateY(-1px);
  }
}

:is(button,a):is(.primary-button,.solid-button,.auth-submit,.lab-run,.welcome-primary,.welcome-nav-cta,.coach-open,.send-button,.leaderboard-join):active:not(:disabled) {
  transform: translateY(0) scale(.985);
  box-shadow: inset 0 1px 2px rgba(0,0,0,.18);
}

:is(button,a):is(.primary-button,.solid-button,.auth-submit,.lab-run,.welcome-primary,.welcome-nav-cta,.coach-open,.send-button,.leaderboard-join):disabled {
  color: #77736a;
  border-color: rgba(245,158,11,.16);
  background: #211d15;
  box-shadow: none;
  filter: none;
  opacity: .68;
}

button:is(.danger-button,.danger-action,.crypto-reject-button) {
  color: #ff9a91;
  border-color: rgba(248,113,113,.36);
  background: #201416;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045);
}

button.crypto-confirm-button {
  color: #72e0b7;
  border-color: rgba(16,185,129,.38);
  background: #0d1a16;
}

button:is(.rank-button.active,.theme-option.active,.title-chip.equipped,.answer-option.selected) {
  color: #ffd17a;
  border-color: rgba(245,158,11,.58);
  background: #21190d;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 0 0 1px rgba(245,158,11,.06);
}

:is(a.subtle-button,a.welcome-secondary,button.subtle-button,button.welcome-secondary,
  button.sign-in-button,button.welcome-login,button.icon-button,button.welcome-theme,
  button.theme-option,button.trace-button) {
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 5px;
  color: var(--muted);
  background: #101116;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045);
  text-decoration: none;
}

@media (hover:hover) and (pointer:fine) {
  :is(a.subtle-button,a.welcome-secondary,button.subtle-button,button.welcome-secondary,
    button.sign-in-button,button.welcome-login,button.icon-button,button.welcome-theme,
    button.theme-option,button.trace-button):hover:not(:disabled) {
    color: var(--ink);
    border-color: rgba(245,158,11,.38);
    background: #17181d;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.075);
  }
}

/* Keep controls that act as links or structural toggles visually quiet. */
:is(button,a):is(.text-button,.link-button,.welcome-course-card>button,.welcome-courses-foot button,
  .welcome-footer button,.welcome-code-top button,.coach-prompts button,.stage-toggle) {
  border-color: transparent;
  color: var(--muted);
  background: transparent;
  background-image: none;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

#appShell .stage-toggle { border-radius: 0; }

@media (hover:hover) and (pointer:fine) {
  :is(button,a):is(.text-button,.link-button,.welcome-course-card>button,.welcome-courses-foot button,
    .welcome-footer button,.welcome-code-top button,.coach-prompts button):hover:not(:disabled) {
    color: var(--accent);
    border-color: transparent;
    background: transparent;
    box-shadow: none;
    transform: none;
  }
}

.welcome-primary [aria-hidden="true"], .welcome-nav-cta [aria-hidden="true"],
.solid-button [aria-hidden="true"], .primary-button [aria-hidden="true"] {
  display: inline-block;
  transition: transform var(--motion-fast) ease;
}

@media (hover:hover) and (pointer:fine) {
  :is(.welcome-primary,.welcome-nav-cta,.solid-button,.primary-button):hover [aria-hidden="true"] {
    transform: translateX(3px);
  }
}

body[data-theme="light"] {
  --control-border: rgba(30,32,38,.16);
  --control-border-hover: rgba(129,75,0,.48);
  --control-glass: linear-gradient(180deg,rgba(255,255,255,.88),rgba(255,255,255,.56));
}

body[data-theme="light"] button:not([data-button-plain]), body[data-theme="light"] [role="button"] {
  color: var(--ink);
  background-color: #f6f5f2;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.82);
}

body[data-theme="light"] :is(button,a):is(.primary-button,.solid-button,.auth-submit,.lab-run,.welcome-primary,.welcome-nav-cta,.coach-open,.send-button,.leaderboard-join) {
  color: #211604;
  border-color: #c47b08;
  background-color: #e99a12;
  background-image: linear-gradient(180deg,rgba(255,255,255,.17),transparent 70%);
}

body[data-theme="light"] button:is(.rank-button.active,.theme-option.active,.title-chip.equipped,.answer-option.selected) {
  color: #563500;
  border-color: rgba(129,75,0,.45);
  background: #fff8e9;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 2px 8px rgba(65,45,16,.07);
}

body[data-theme="light"] :is(a.subtle-button,a.welcome-secondary,button.subtle-button,button.welcome-secondary,
  button.sign-in-button,button.welcome-login,button.icon-button,button.welcome-theme,button.theme-option,button.trace-button) {
  color: #484a50;
  border-color: rgba(30,32,38,.16);
  background: #f8f7f4;
}

@media (prefers-reduced-motion:reduce) {
  button:not([data-button-plain]), [role="button"],
  .welcome-primary [aria-hidden="true"], .welcome-nav-cta [aria-hidden="true"],
  .solid-button [aria-hidden="true"], .primary-button [aria-hidden="true"] {
    transition: none !important;
  }
  button:not([data-button-plain]):hover, [role="button"]:hover { transform: none !important; }
  .welcome-code-card { animation: none !important; }
}

/* Tutor interface removal and guest workspace visibility. */
#appShell.app { grid-template-columns: 244px minmax(0, 1fr); }
#appShell .rightbar,
#mobileTutorBackdrop,
#mobileTutorButton,
#dashboardView .quest-tutor { display: none !important; }
#dashboardView .quest-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 1180px) {
  #appShell.app { grid-template-columns: 218px minmax(0, 1fr); }
  #appShell.app.sidebar-collapsed { grid-template-columns: 68px minmax(0, 1fr); }
}

@media (max-width: 960px) {
  #dashboardView .quest-grid .quest-card:last-child { grid-column: auto; }
}

@media (max-width: 760px) {
  #dashboardView .quest-grid { grid-template-columns: 1fr; }
}

/* A desktop collapsed rail can survive into a narrow browser session. Restore
   the full labels and hit targets while the sidebar is acting as a mobile drawer. */
@media (max-width: 760px) {
  #appShell.app.sidebar-collapsed .sidebar {
    align-items: stretch;
    padding: 20px 15px 14px;
  }
  #appShell.app.sidebar-collapsed .brand {
    justify-content: flex-start;
    width: 100%;
    padding: 0 7px;
    margin-bottom: 27px;
  }
  #appShell.app.sidebar-collapsed .brand-name,
  #appShell.app.sidebar-collapsed .nav-label,
  #appShell.app.sidebar-collapsed .streak-top > span:nth-child(2),
  #appShell.app.sidebar-collapsed .streak-card p,
  #appShell.app.sidebar-collapsed .profile-text,
  #appShell.app.sidebar-collapsed .profile .more,
  #appShell.app.sidebar-collapsed .sidebar-footer-links a span {
    display: revert;
  }
  #appShell.app.sidebar-collapsed .streak-week {
    display: flex;
  }
  #appShell.app.sidebar-collapsed .nav,
  #appShell.app.sidebar-collapsed .sidebar > nav {
    width: 100%;
    justify-items: stretch;
  }
  #appShell.app.sidebar-collapsed .nav-btn {
    justify-content: flex-start;
    width: 100%;
    min-height: 40px;
    padding: 0 9px;
    font-size: 12px;
  }
  #appShell.app.sidebar-collapsed .nav-btn svg {
    width: 16px;
    height: 16px;
  }
  #appShell.app.sidebar-collapsed .nav-pill {
    position: static;
    min-width: 0;
    height: auto;
    margin-left: auto;
    padding: 2px 6px;
    font-size: 12px;
  }
  #appShell.app.sidebar-collapsed .side-rule {
    width: auto;
    margin: 11px 8px;
  }
  #appShell.app.sidebar-collapsed .streak-card {
    width: 100%;
    padding: 13px 3px 12px;
    border: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }
  #appShell.app.sidebar-collapsed .streak-top {
    justify-content: flex-start;
  }
  #appShell.app.sidebar-collapsed .profile {
    justify-content: flex-start;
    width: 100%;
    padding: 13px 3px 0;
    margin-top: 0;
  }
  #appShell.app.sidebar-collapsed .sidebar-footer-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-items: stretch;
    gap: 4px 8px;
    width: 100%;
  }
  #appShell.app.sidebar-collapsed .sidebar-footer-links a {
    justify-content: flex-start;
    width: auto;
    height: auto;
    min-height: 32px;
    padding: 5px 6px;
    font-size: 12px;
  }
}

/* Donate page: softer glass surfaces, with the payment details kept legible. */
.support-page .support-signal,
.support-page .support-panel,
.support-page .donation-history{
  border-color:rgba(255,255,255,.085);
  border-radius:16px;
  background:linear-gradient(145deg,rgba(255,255,255,.045),transparent 42%),rgba(14,15,20,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 20px 48px rgba(0,0,0,.22);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
}
.support-page .support-signal{border-radius:18px}
.support-page .support-panel:before{left:24px;width:54px;opacity:.78}
.support-page .support-reward,
.support-page .support-gate,
.support-page .donation-checkout{
  border:1px solid rgba(255,255,255,.09);
  border-radius:13px;
  background:linear-gradient(145deg,rgba(255,255,255,.035),transparent 60%),rgba(8,9,12,.54);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(125%);
  -webkit-backdrop-filter:blur(14px) saturate(125%);
}
.support-page .support-reward{border-color:rgba(245,158,11,.2);background:linear-gradient(120deg,rgba(245,158,11,.07),transparent 72%),rgba(8,9,12,.52)}
.support-page .support-gate{border-left:1px solid rgba(245,158,11,.32)}
.support-page .support-notice{padding:12px;border:1px solid rgba(255,255,255,.065);border-radius:10px;background:rgba(255,255,255,.025)}
.support-page :is(.support-select,.support-amount-wrap input){
  min-height:46px;
  border-color:rgba(255,255,255,.12);
  border-radius:10px;
  background:rgba(8,9,12,.56);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.support-page :is(.support-select,.support-amount-wrap input):hover{border-color:rgba(255,255,255,.2)}
.support-page :is(.support-select,.support-amount-wrap input):focus-visible{border-color:rgba(245,158,11,.55);outline:2px solid rgba(245,158,11,.2);outline-offset:2px;box-shadow:0 0 0 4px rgba(245,158,11,.055)}
.support-page .support-count,.support-page .support-step-index{padding:6px 9px;border-radius:8px;background:rgba(255,255,255,.025)}
.support-page .support-steps span{border-radius:9px;background:rgba(14,15,20,.72);backdrop-filter:blur(12px)}
.support-page :is(.donation-pay-amount,.donation-address-wrap){border-color:rgba(255,255,255,.085);border-radius:10px;background:rgba(8,9,12,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.support-page .donation-timer{border-radius:8px;background:rgba(245,158,11,.045)}
.support-page :is(.support-submit-button,.support-gate .solid-button,.donation-resume,.donation-address-wrap .support-copy){border-radius:9px}
.support-page .support-submit-button{min-height:46px;justify-content:center;transition:transform .18s ease,filter .18s ease,box-shadow .18s ease}
.support-page .support-submit-button:hover:not(:disabled){transform:translateY(-1px);filter:brightness(1.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 8px 24px rgba(0,0,0,.24),0 0 18px rgba(245,158,11,.08)}
.support-page .support-copy,.support-page .donation-resume{transition:transform .18s ease,border-color .18s ease,color .18s ease,background .18s ease}
.support-page .support-copy:hover,.support-page .donation-resume:hover{transform:translateY(-1px)}
.support-page :is(.support-copy,.donation-resume,.support-submit-button,.support-select,.support-amount-wrap input):focus-visible{outline:2px solid rgba(245,158,11,.72);outline-offset:3px}
@media(max-width:650px){
  .support-page .support-signal,.support-page .support-panel,.support-page .donation-history{border-radius:14px}
  .support-page .support-panel{padding:17px}
  .support-page .support-submit-button{width:100%}
}
@media(prefers-reduced-motion:reduce){
  .support-page :is(.support-select,.support-amount-wrap input,.support-copy,.donation-resume,.support-submit-button){transition:none}
  .support-page .support-submit-button:hover:not(:disabled),.support-page .support-copy:hover,.support-page .donation-resume:hover{transform:none}
}
.support-page .page-eyebrow{font:500 12px/1.5 var(--sans);letter-spacing:.015em;text-transform:none}
.support-page .standalone-status{letter-spacing:.025em}
.support-page .support-route{font:12px var(--sans);letter-spacing:0}
.support-page .support-route b{font:500 12px var(--mono)}
.support-page p.support-copy{display:block;margin:0 0 14px;padding:0;border:0;border-radius:0;color:var(--muted);background:transparent;box-shadow:none;font:13px/1.7 var(--sans);text-align:left;backdrop-filter:none;-webkit-backdrop-filter:none;cursor:default}
.support-page .support-signal-label,.support-page .support-reward-index,.support-page .support-trust-index{font:500 12px/1.5 var(--sans);letter-spacing:.015em;text-transform:none}
.support-page .support-count,.support-page .support-step-index{font:500 12px var(--sans);letter-spacing:.015em}
.support-page .donation-pay-amount span,.support-page .donation-address-wrap>span{font:500 12px/1.45 var(--sans);letter-spacing:.025em;text-transform:none}

/* Workspace overview: separate the next action, progress, and course map. */
button.owner-console-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 11px;
  border: 1px solid rgba(245,158,11,.32);
  border-radius: 6px;
  color: #f4f4f6;
  background: linear-gradient(145deg,rgba(245,158,11,.08),rgba(14,15,20,.82));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.09);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
button.owner-console-button [aria-hidden="true"] { color: #f59e0b; font-family: var(--mono); }
button.owner-console-button:focus-visible { outline: 2px solid #f59e0b; outline-offset: 3px; }
@media (hover:hover) and (pointer:fine) {
  button.owner-console-button:hover { border-color: rgba(245,158,11,.62); background-color: #17181d; }
}
body[data-theme="light"] button.owner-console-button { color: #211604; background: linear-gradient(145deg,rgba(129,75,0,.09),rgba(255,255,255,.88)); }

#dashboardView { display: grid; gap: 22px; }
#dashboardView > .dashboard-heading {
  align-items: flex-end;
  margin: 0;
  padding: 2px 0 13px;
  border-bottom: 1px solid var(--line);
}
#dashboardView .dashboard-heading h1 {
  max-width: 680px;
  font-size: clamp(30px,3vw,42px);
  letter-spacing: -.055em;
  text-wrap: balance;
}
#dashboardView .dashboard-heading p { margin-top: 7px; }
#dashboardView .dashboard-heading .week-chip { flex: 0 0 auto; }
#dashboardView > .hero {
  min-height: 238px;
  margin: 0;
  border-color: rgba(255,255,255,.1);
  border-radius: 9px;
  background: radial-gradient(ellipse at 84% 12%,rgba(245,158,11,.105),transparent 26rem),linear-gradient(135deg,#111216,#0b0c0f 62%,#101116);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1),0 14px 36px rgba(0,0,0,.2);
}
#dashboardView > .stats {
  gap: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
  -webkit-backdrop-filter: blur(16px) saturate(125%);
  backdrop-filter: blur(16px) saturate(125%);
}
#dashboardView .stat-card {
  min-height: 82px;
  padding: 13px 12px;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
#dashboardView .stat-card:last-child { border-right: 0; }
#dashboardView .stat-copy span { letter-spacing: .045em; }
#dashboardView > .quest-hub {
  margin: 0;
  padding: clamp(16px,2vw,22px);
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08),0 14px 34px rgba(0,0,0,.16);
}
#dashboardView > #learningSection {
  padding-top: 19px;
  border-top: 1px solid var(--line);
}
#dashboardView #learningSection .section-heading { align-items: center; margin-bottom: 16px; }
#dashboardView #learningSection .section-heading h2 { font-size: 23px; letter-spacing: -.045em; }
#dashboardView #learningSection .path-controls {
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(14,15,20,.58);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.045);
}
#dashboardView #learningSection .roadmap { margin-top: 17px; }

html.has-scroll-reveals #dashboardView [data-scroll-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .42s cubic-bezier(.2,.75,.25,1) var(--scroll-reveal-delay,0ms),transform .52s cubic-bezier(.2,.75,.25,1) var(--scroll-reveal-delay,0ms);
}
html.has-scroll-reveals #dashboardView [data-scroll-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media(max-width:760px) {
  #dashboardView { gap: 19px; }
  #dashboardView > .dashboard-heading { flex-direction: row; align-items: flex-end; }
  #dashboardView .dashboard-heading h1 { font-size: clamp(28px,7vw,38px); }
  #dashboardView > .stats { grid-template-columns: repeat(2,minmax(0,1fr)); }
  #dashboardView .stat-card { min-height: 77px; flex-direction: row; border-bottom: 1px solid var(--line); }
  #dashboardView .stat-card:nth-child(2) { border-right: 0; }
  #dashboardView .stat-card:nth-last-child(-n+2) { border-bottom: 0; }
  #dashboardView > .hero { min-height: 192px; }
  #dashboardView > .quest-hub { padding: 15px; }
  .owner-console-button { min-height: 36px; padding-inline: 8px; font-size: 12px; }
  .welcome-owner-button { gap: 4px; }
}
@media(max-width:430px) {
  #dashboardView > .dashboard-heading { align-items: flex-start; flex-direction: column; gap: 7px; }
  #dashboardView > .hero { padding: 21px 16px; }
  #dashboardView .stat-card { gap: 8px; padding: 10px 8px; }
  #dashboardView .stat-copy span { font-size: 10px; }
  #dashboardView .stat-copy b { font-size: 16px; }
  #dashboardView .stat-copy small { font-size: 12px; }
  #dashboardView .quest-hub-head h2 { font-size: 18px; }
  #dashboardView #learningSection .section-heading h2 { font-size: 21px; }
  .owner-console-button { gap: 3px; padding-inline: 6px; }
  button.owner-console-button [aria-hidden="true"] { display: none; }
}
@media(prefers-reduced-motion:reduce) {
  html.has-scroll-reveals #dashboardView [data-scroll-reveal],
  html.has-scroll-reveals #dashboardView [data-scroll-reveal].is-visible { opacity: 1!important; transform: none!important; transition: none!important; }
}

/* Sidebar rail: keep its labels mounted so expansion feels continuous. */
@media (min-width: 761px) {
  #appShell.app {
    transition: grid-template-columns 360ms cubic-bezier(.2,.75,.25,1);
  }
  #appShell .sidebar {
    transition: padding 320ms cubic-bezier(.2,.75,.25,1), background-color 180ms ease;
  }
  #appShell .brand-name {
    display: block;
    max-width: 110px;
    overflow: hidden;
    white-space: nowrap;
    opacity: 1;
    transform: translateX(0);
    transition: max-width 280ms cubic-bezier(.2,.75,.25,1), opacity 180ms ease, transform 240ms ease;
  }
  #appShell .nav-label {
    display: block;
    max-height: 22px;
    overflow: hidden;
    opacity: 1;
    transform: translateY(0);
    transition: max-height 240ms ease, margin 240ms ease, opacity 160ms ease, transform 200ms ease;
  }
  #appShell .nav-btn {
    overflow: hidden;
    transition: width 320ms cubic-bezier(.2,.75,.25,1), min-height 260ms ease, gap 260ms ease, padding 260ms ease, color .18s ease, background .18s ease, border-color .18s ease, transform .18s ease;
  }
  #appShell .nav-text {
    display: inline-block;
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    opacity: 1;
    transform: translateX(0);
    transition: max-width 280ms cubic-bezier(.2,.75,.25,1), opacity 160ms ease, transform 220ms ease;
  }
  #appShell.app.sidebar-collapsed .brand-name {
    display: block;
    max-width: 0;
    opacity: 0;
    transform: translateX(-5px);
  }
  #appShell.app.sidebar-collapsed .nav-label {
    display: block;
    max-height: 0;
    margin-block: 0;
    opacity: 0;
    transform: translateY(-3px);
  }
  #appShell.app.sidebar-collapsed .nav-btn { gap: 0; }
  #appShell.app.sidebar-collapsed .nav-text {
    max-width: 0;
    opacity: 0;
    transform: translateX(-5px);
  }
  #appShell.app.sidebar-collapsed .profile-text,
  #appShell.app.sidebar-collapsed .profile .more {
    display: block;
    max-width: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-width 260ms ease, opacity 150ms ease;
  }
  #appShell.app.sidebar-collapsed .sidebar-footer-links a span {
    display: inline-block;
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    opacity: 0;
    transition: max-width 240ms ease, opacity 150ms ease;
  }
}
@media (min-width: 761px) and (prefers-reduced-motion: reduce) {
  #appShell.app,
  #appShell .sidebar,
  #appShell .brand-name,
  #appShell .nav-label,
  #appShell .nav-btn,
  #appShell .nav-text,
  #appShell .profile-text,
  #appShell .profile .more,
  #appShell .sidebar-footer-links a span {
    transition: none !important;
  }
}

/* First-visit motion: one entrance sequence, one scroll-reveal system, no idle bobbing. */
@keyframes syntax-enter-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes syntax-enter-frame {
  from { opacity: .25; transform: translateY(10px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes syntax-enter-code {
  from { opacity: .3; transform: translateX(7px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes syntax-enter-output {
  from { opacity: .35; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: no-preference) {
  html:not([data-motion="gsap"]) .welcome-nav {
    animation: syntax-enter-up 440ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-copy > .welcome-kicker {
    animation: syntax-enter-up 440ms 60ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-copy > h1 {
    animation: syntax-enter-up 520ms 110ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-copy > .welcome-intro {
    animation: syntax-enter-up 460ms 170ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-copy > .welcome-hero-actions {
    animation: syntax-enter-up 460ms 230ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-copy > .welcome-proof,
  html:not([data-motion="gsap"]) .welcome-copy > .welcome-runtime-truth {
    animation: syntax-enter-up 460ms 290ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-visual {
    animation: syntax-enter-frame 620ms 140ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-code {
    animation: syntax-enter-code 420ms 470ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-result {
    animation: syntax-enter-output 380ms 650ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .welcome-node {
    animation: syntax-enter-up 400ms 360ms cubic-bezier(.2,.75,.25,1) both;
  }
  html:not([data-motion="gsap"]) .node-js { animation-delay: 410ms; }
  html:not([data-motion="gsap"]) .node-web { animation-delay: 460ms; }
  html:not([data-motion="gsap"]) .node-rust { animation-delay: 510ms; }

  .welcome-code-card {
    animation: none;
    transition: transform 200ms cubic-bezier(.2,.75,.25,1), border-color 200ms ease, box-shadow 200ms ease;
  }
  .welcome-visual:hover .welcome-code-card,
  .welcome-visual:focus-within .welcome-code-card {
    transform: translateY(-2px);
    border-color: var(--control-border-hover, rgba(245,158,11,.48));
    box-shadow: inset 0 1px 0 rgba(255,255,255,.07), 0 18px 44px rgba(0,0,0,.24);
  }
  .welcome-course-card > button b {
    display: inline-block;
    transition: transform 180ms cubic-bezier(.2,.75,.25,1);
  }
  .welcome-course-card:hover > button b,
  .welcome-course-card:focus-within > button b {
    transform: translateX(3px);
  }
  .welcome-primary:hover, .welcome-secondary:hover, .welcome-nav-cta:hover {
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .welcome-course-card:hover, .welcome-course-card:focus-within,
  .welcome-visual:hover .welcome-code-card, .welcome-visual:focus-within .welcome-code-card {
    transform: none !important;
  }
}

/* A more legible first view, with space for the actual learning paths. */
@media (min-width: 1181px) {
  .welcome-hero {
    min-height: min(700px, calc(100svh - 68px));
    grid-template-columns: minmax(0, 1.05fr) minmax(440px, .95fr);
    gap: clamp(36px, 5vw, 76px);
    padding-block: clamp(64px, 8vw, 104px) clamp(48px, 6vw, 76px);
  }
  .welcome-copy h1 { font-size: clamp(58px, 6.2vw, 86px); }
}
@media (min-width: 901px) and (max-width: 1180px) {
  .welcome-hero {
    grid-template-columns: minmax(0,1.05fr) minmax(340px,.95fr);
    gap: clamp(30px,4vw,48px);
  }
  .welcome-copy h1 { font-size: clamp(48px,6vw,70px); }
}

.welcome-language-strip { padding-block: 34px; }
.welcome-marquee-track { gap: 8px; }
.ticker-language {
  min-height: 38px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(13,14,18,.5);
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}
.ticker-language:hover { border-color: var(--control-border-hover); background: var(--raised); }

.method-grid { gap: 12px; border: 0; }
.method-card {
  position: relative;
  min-height: 210px;
  grid-template-columns: 35px minmax(0,1fr);
  gap: 9px 17px;
  padding: 20px;
  overflow: hidden;
  border: 1px solid var(--line2);
  border-radius: 8px;
  background: linear-gradient(145deg,rgba(255,255,255,.035),transparent 54%),var(--panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}
.method-card + .method-card { padding-left: 20px; border-left: 1px solid var(--line2); }
.method-number { grid-row: 1 / span 3; padding-top: 3px; font-size: 12px; }
.method-illustration { min-height: 58px; }
.method-card h3 { margin: 10px 0 1px; font-size: 16px; }
.method-card p { grid-column: 2; max-width: 36ch; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.method-card:nth-child(2) { background: linear-gradient(145deg,rgba(245,158,11,.065),transparent 56%),var(--panel); }
.method-card:nth-child(3) { background: linear-gradient(145deg,rgba(255,255,255,.025),transparent 56%),var(--panel); }

.welcome-courses { padding-block: 52px 64px; }
.courses-head { margin-bottom: 29px; }
.welcome-course-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; border: 0; }
.welcome-course-card {
  min-height: 230px;
  padding: 19px 20px 14px;
  overflow: hidden;
  border: 1px solid var(--line2);
  border-radius: 8px;
  background: linear-gradient(145deg,rgba(255,255,255,.035),transparent 58%),var(--panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}
.welcome-course-card::before {
  position: absolute;
  top: 0;
  right: 20px;
  left: 20px;
  height: 1px;
  background: linear-gradient(90deg,transparent,rgba(245,158,11,.65),transparent);
  content: "";
  opacity: .7;
}
.welcome-course-card:hover, .welcome-course-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--control-border-hover);
  background: linear-gradient(145deg,rgba(245,158,11,.055),transparent 65%),var(--panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08),0 14px 32px rgba(0,0,0,.22);
}
.course-card-top { grid-template-columns: 36px minmax(0,1fr) auto; gap: 10px; }
.course-mark { width: 36px; height: 36px; border-color: rgba(245,158,11,.25); border-radius: 6px; background: rgba(245,158,11,.055); font-size: 12px; }
.course-level { font-size: 11px; letter-spacing: .12em; }
.course-arrow { font-size: 11px; color: var(--accent); }
.welcome-course-card h3 { margin: 20px 0 7px; font-size: 22px; letter-spacing: -.04em; }
.welcome-course-card>p { min-height: 48px; margin-bottom: 14px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.course-meta { align-items: center; justify-content: space-between; gap: 8px; min-height: 32px; margin-top: auto; padding-top: 9px; border-top: 1px solid var(--line); font-size: 11px; letter-spacing: .04em; }
.course-meta>span:last-child { text-align: right; }
.course-runtime { display: inline-flex; align-items: center; gap: 7px; min-width: 0; }
.course-runtime i { width: 6px; height: 6px; flex: 0 0 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 3px rgba(16,185,129,.09); }
.course-runtime.is-remote i { background: var(--accent); box-shadow: 0 0 0 3px rgba(245,158,11,.09); }
.welcome-course-card>button { min-height: 42px; align-self: stretch; display: flex; align-items: center; justify-content: space-between; margin-top: 5px; padding: 0 1px; border-top: 0; color: var(--ink); font-size: 13px; }
.welcome-course-card>button b { color: var(--accent); }
.welcome-course-card>button:hover { color: var(--accent); }
.welcome-courses-foot { align-items: center; margin-top: 17px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 13px; }
.welcome-courses-foot button { min-height: 42px; padding: 0 2px; font-size: 12px; }

@media (max-width: 900px) {
  .welcome-course-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 760px) {
  .welcome-language-strip { padding-block: 26px; }
  .method-grid { grid-template-columns: 1fr; }
  .method-card { min-height: 0; }
  .method-card + .method-card { padding-left: 20px; border-top: 0; border-left: 1px solid var(--line2); }
  .welcome-courses { padding-block: 34px 42px; }
  .welcome-course-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 430px) {
  .welcome-copy h1 { font-size: clamp(42px,12vw,56px); }
  .welcome-course-grid { grid-template-columns: 1fr; }
  .welcome-course-card { min-height: 205px; padding: 17px 18px 12px; }
  .welcome-course-card>p { min-height: 0; }
  .welcome-courses-foot { align-items: flex-start; }
  .welcome-courses-foot button { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  .ticker-language, .method-card, .welcome-course-card { transition: none!important; }
}

/* Landing polish: show the real lesson flow and its help in context. */
#welcomeView .welcome-hero {
  min-height: min(720px, calc(100svh - 68px));
  align-items: center;
  padding-block: clamp(58px, 7vw, 100px) clamp(42px, 5vw, 72px);
}

#welcomeView .welcome-copy h1 {
  max-width: 12ch;
  font-size: clamp(58px, 5.8vw, 82px);
  line-height: .98;
  letter-spacing: -.072em;
}

#welcomeView .welcome-intro {
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.68;
}

#welcomeView .welcome-primary,
#welcomeView .welcome-secondary {
  min-height: 48px;
}

#welcomeView .welcome-proof {
  max-width: 470px;
  font-size: 13px;
}

#welcomeView .welcome-bit-link {
  --ink: #f4f4f6;
  --muted: #a7aab3;
  --accent: #f59e0b;
  display: flex;
  align-items: center;
  gap: 13px;
  width: fit-content;
  max-width: 100%;
  margin-top: 23px;
  padding: 10px 13px 10px 10px;
  border: 1px solid var(--line);
  border-left-color: rgba(245,158,11,.64);
  border-radius: 6px;
  color: var(--ink);
  background: linear-gradient(100deg,rgba(245,158,11,.055),rgba(14,15,20,.54) 45%);
  text-decoration: none;
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

#welcomeView .welcome-bit-link img {
  display: block;
  width: 39px;
  height: 44px;
  flex: 0 0 39px;
  object-fit: contain;
}

#welcomeView .welcome-bit-link small,
#welcomeView .welcome-bit-link b,
#welcomeView .welcome-bit-link em { display: block; }
#welcomeView .welcome-bit-link small { color: var(--accent); font: 12px/1.5 var(--mono); letter-spacing: .1em; }
#welcomeView .welcome-bit-link b { margin-top: 2px; font-size: 13px; }
#welcomeView .welcome-bit-link em { margin-top: 3px; color: var(--muted); font-size: 12px; font-style: normal; }

@media (hover:hover) and (pointer:fine) {
  #welcomeView .welcome-bit-link:hover { transform: translateY(-1px); border-color: rgba(245,158,11,.42); background-color: rgba(245,158,11,.055); }
}

#welcomeView .welcome-visual {
  display: block;
  min-height: 0;
  padding: 0;
  overflow: visible;
  border: 0;
  background: transparent;
  box-shadow: none;
}

#welcomeView .welcome-visual::before { display: none; }

#welcomeView .welcome-code-card {
  --ink: #f4f4f6;
  --muted: #a7aab3;
  --quiet: #8e929f;
  --line: rgba(255,255,255,.08);
  --line2: rgba(255,255,255,.14);
  --accent: #f59e0b;
  --signal: #10b981;
  width: 100%;
  min-height: 0;
  padding: clamp(16px, 2.2vw, 24px);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 9px;
  background: rgba(14,15,20,.86);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
  animation: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 24px 58px rgba(0,0,0,.32);
}

#welcomeView .welcome-code-top { min-height: 40px; padding-bottom: 11px; }
#welcomeView .welcome-code-top b { margin-right: auto; margin-left: 11px; color: var(--muted); font-size: 12px; letter-spacing: .12em; }
#welcomeView #welcomeReplay { display: grid; place-items: center; width: 38px; min-width: 38px; min-height: 38px; border: 1px solid var(--line2); border-radius: 5px; color: var(--muted); background: rgba(255,255,255,.025); font-size: 16px; }
#welcomeView .welcome-code-meta { margin-block: 12px 10px; font-size: 12px; }
#welcomeView .preview-label { padding: 3px 6px; border: 1px solid var(--line2); border-radius: 4px; color: var(--muted); background: rgba(255,255,255,.025); font: 12px/1.3 var(--mono); letter-spacing: .08em; }

#welcomeView .welcome-preview-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--line);
  list-style: none;
}

#welcomeView .welcome-preview-steps li { display: flex; align-items: center; gap: 7px; min-width: 0; color: var(--quiet); font: 12px/1.4 var(--mono); letter-spacing: .08em; white-space: nowrap; }
#welcomeView .welcome-preview-steps li b { color: var(--muted); font: inherit; font-variant-numeric: tabular-nums; }
#welcomeView .welcome-preview-steps li[aria-current="step"] { color: var(--ink); }
#welcomeView .welcome-preview-steps li[aria-current="step"] b { color: var(--accent); }
#welcomeView .welcome-preview-steps > i { height: 1px; background: var(--line2); }

#welcomeView .welcome-code {
  min-height: 116px;
  margin: 0 0 11px;
  padding: 19px 17px;
  border-color: rgba(255,255,255,.09);
  border-radius: 5px;
  color: #e8e9ed;
  background: rgba(8,8,10,.9);
  font-size: 14px;
  line-height: 1.8;
}

#welcomeView .welcome-result { min-height: 43px; padding-inline: 12px; border-radius: 5px; }
#welcomeView .welcome-code-foot { margin-block: 10px 15px; font-size: 12px; letter-spacing: .08em; }

#welcomeView .welcome-preview-tabs {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 7px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}

#welcomeView .welcome-node {
  min-height: 40px;
  padding-inline: 8px;
  border-radius: 5px;
  color: var(--muted);
  background: rgba(255,255,255,.018);
  transition: color .18s ease, border-color .18s ease, background-color .18s ease, transform .18s ease;
}

#welcomeView .welcome-node[aria-pressed="true"] {
  border-color: rgba(245,158,11,.42);
  color: var(--ink);
  background: rgba(245,158,11,.09);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}

#welcomeView .welcome-node[aria-pressed="true"] span { color: var(--accent); }

@media (hover:hover) and (pointer:fine) {
  #welcomeView .welcome-node:hover:not([aria-pressed="true"]) { transform: translateY(-1px); border-color: var(--line2); color: var(--ink); }
}

#welcomeView .welcome-agent {
  --ink: #f4f4f6;
  --muted: #a7aab3;
  --line: rgba(255,255,255,.1);
  --accent: #f59e0b;
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 9px;
  justify-self: end;
  margin: 12px 5% 0 auto;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  background: rgba(14,15,20,.76);
  text-decoration: none;
  transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}

#welcomeView .welcome-agent b,
#welcomeView .welcome-agent small { display: block; }
#welcomeView .welcome-agent b { font-size: 12px; }
#welcomeView .welcome-agent small { color: var(--muted); font-size: 12px; }
#welcomeView .agent-arrow { color: var(--accent); font: 12px var(--mono); }
#welcomeView .agent-spark { border-color: rgba(245,158,11,.32); color: var(--accent); background: rgba(245,158,11,.06); }

@media (hover:hover) and (pointer:fine) {
  #welcomeView .welcome-agent:hover { transform: translateY(-1px); border-color: rgba(245,158,11,.34); background: var(--panel); }
}

#welcomeView .welcome-language-strip,
#welcomeView .welcome-method,
#welcomeView .welcome-courses { padding-block: clamp(48px,6vw,76px); }

#welcomeView .welcome-runtime-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}

#welcomeView .welcome-runtime-bar > div { min-width: 0; }
#welcomeView .welcome-runtime-bar > div + div { padding-left: 18px; border-left: 1px solid var(--line); }
#welcomeView .welcome-runtime-bar span { color: var(--accent); font: 12px/1.5 var(--mono); letter-spacing: .11em; }
#welcomeView .welcome-runtime-bar p { max-width: 52ch; margin: 5px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

#welcomeView .welcome-method { border-top: 1px solid var(--line); }
#welcomeView .welcome-method .welcome-section-head { margin-bottom: 30px; }
#welcomeView .method-grid {
  grid-template-columns: repeat(3,minmax(0,1fr));
  border-top: 1px solid var(--line2);
  border-bottom: 1px solid var(--line2);
}

#welcomeView .method-card {
  min-height: 220px;
  padding: 23px 23px 25px;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: background-color .22s ease;
}

#welcomeView .method-card + .method-card { padding-left: 23px; border-left: 1px solid var(--line); }
#welcomeView .method-card:first-child { background: linear-gradient(145deg,rgba(245,158,11,.055),transparent 72%); }
#welcomeView .method-card:hover { transform: none; border-color: var(--line); box-shadow: none; }
#welcomeView .method-number { color: var(--accent); }
#welcomeView .method-illustration { min-height: 76px; }
#welcomeView .method-card h3 { font-size: 17px; }
#welcomeView .method-card p { max-width: 37ch; font-size: 14px; line-height: 1.65; }

html.has-scroll-reveals #welcomeView .method-card .method-illustration > * {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .24s ease, transform .28s cubic-bezier(.2,.75,.25,1);
}

html.has-scroll-reveals #welcomeView .method-card.is-visible .method-illustration > * { opacity: 1; transform: translateY(0); }
html.has-scroll-reveals #welcomeView .method-card.is-visible .method-illustration > *:nth-child(2) { transition-delay: 70ms; }
html.has-scroll-reveals #welcomeView .method-card.is-visible .method-illustration > *:nth-child(3) { transition-delay: 130ms; }

#welcomeView .welcome-courses { border-top: 1px solid var(--line); }
#welcomeView .welcome-course-card>p { font-size: 14px; line-height: 1.65; }
#welcomeView .welcome-course-grid { gap: 14px; }
#welcomeView .welcome-course-card { min-height: 236px; border-radius: 7px; }

#welcomeView .welcome-coach {
  --ink: #f4f4f6;
  --muted: #a7aab3;
  --quiet: #8e929f;
  --line: rgba(255,255,255,.09);
  --line2: rgba(255,255,255,.14);
  --accent: #f59e0b;
  --signal: #10b981;
  width: min(var(--layout-max),calc(100% - 2 * var(--layout-gutter)));
  grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr);
  gap: clamp(24px,5vw,70px);
  margin: 8px auto 54px;
  padding: clamp(28px,5vw,58px);
  border: 1px solid var(--line2);
  border-radius: 9px;
  background: linear-gradient(118deg,rgba(245,158,11,.075),transparent 44%),rgba(13,14,18,.86);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  backdrop-filter: blur(18px) saturate(130%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.07),0 24px 52px rgba(0,0,0,.2);
}

#welcomeView .coach-copy h2 { font-size: clamp(36px,4.2vw,56px); }
#welcomeView .coach-copy>p,
#welcomeView .coach-copy li { font-size: 14px; line-height: 1.65; }
#welcomeView .coach-copy ul { gap: 10px; margin: 20px 0; }
#welcomeView .coach-transparency { max-width: 52ch; margin: 18px 0; color: var(--quiet); font-size: 12px!important; }
#welcomeView .coach-open { min-height: 46px; padding-inline: 14px; }

#welcomeView .coach-demo {
  align-self: center;
  padding: 17px;
  border: 1px solid var(--line2);
  border-radius: 8px;
  background: rgba(8,8,10,.68);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}

#welcomeView .coach-demo-top { min-height: 47px; }
#welcomeView .coach-demo-top b { font-size: 14px; }
#welcomeView .coach-demo-top small { font-size: 12px; }
#welcomeView .coach-ready { color: var(--accent); font-size: 12px; letter-spacing: .1em; }
#welcomeView .coach-demo-chat { gap: 10px; min-height: 164px; align-content: center; padding-block: 16px; }
#welcomeView .coach-message { max-width: 90%; padding: 12px 13px; border-radius: 6px; font-size: 14px; line-height: 1.65; }
#welcomeView .coach-message code { color: var(--ink); font: 12px var(--mono); }
#welcomeView .user-message { justify-self: end; border-color: rgba(245,158,11,.24); color: var(--ink); background: rgba(245,158,11,.06); }
#welcomeView .nova-message { justify-self: start; color: var(--ink); background: rgba(255,255,255,.025); }
#welcomeView .coach-demo-foot { padding-top: 10px; border-top: 1px solid var(--line); font-size: 12px; }

#welcomeView .welcome-footer { align-items: center; padding-block: 20px 26px; }

@media (max-width: 900px) {
  #welcomeView .welcome-coach { grid-template-columns: minmax(0,1fr); }
}

@media (max-width: 760px) {
  #welcomeView .welcome-hero { min-height: 0; gap: 30px; padding-block: 48px 40px; }
  #welcomeView .welcome-copy h1 { max-width: 12ch; font-size: clamp(48px,11vw,72px); }
  #welcomeView .welcome-bit-link { margin-top: 19px; }
  #welcomeView .welcome-visual { width: 100%; max-width: none; }
  #welcomeView .welcome-code-card { padding: 15px; }
  #welcomeView .welcome-code { min-height: 90px; padding: 14px 12px; font-size: 13px; }
  #welcomeView .welcome-preview-tabs { grid-template-columns: repeat(2,minmax(0,1fr)); }
  #welcomeView .welcome-node { justify-content: flex-start; }
  #welcomeView .welcome-agent { margin-right: 0; }
  #welcomeView .welcome-language-strip,
  #welcomeView .welcome-method,
  #welcomeView .welcome-courses { padding-block: 38px; }
  #welcomeView .welcome-runtime-bar { gap: 12px; }
  #welcomeView .welcome-runtime-bar > div + div { padding-left: 12px; }
  #welcomeView .method-grid { grid-template-columns: minmax(0,1fr); }
  #welcomeView .method-card { min-height: 0; padding: 18px 8px; }
  #welcomeView .method-card + .method-card { padding-left: 8px; border-top: 1px solid var(--line); border-left: 0; }
  #welcomeView .method-illustration { min-height: 56px; }
  #welcomeView .welcome-coach { width: calc(100% - 2 * var(--layout-gutter)); margin-block: 4px 32px; padding: 23px 18px; }
  #welcomeView .coach-demo { padding: 13px; }
}

@media (max-width: 430px) {
  #welcomeView .welcome-copy h1 { font-size: clamp(40px,10.5vw,50px); }
  #welcomeView .welcome-proof { font-size: 12px; }
  #welcomeView .welcome-runtime-bar { grid-template-columns: minmax(0,1fr); }
  #welcomeView .welcome-runtime-bar > div + div { padding: 12px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  #welcomeView .welcome-course-card { min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  #welcomeView .welcome-bit-link,
  #welcomeView .welcome-node,
  #welcomeView .welcome-agent { transition: none!important; }
  html.has-scroll-reveals #welcomeView .method-card .method-illustration > *,
  html.has-scroll-reveals #welcomeView .method-card.is-visible .method-illustration > * {
    opacity: 1!important;
    transform: none!important;
    transition: none!important;
  }
}