/* CEREBRUM v25. Компактная шапка и hero, более читаемая типографика.
   Слой подключается последним и переопределяет размеры из site.css / wide-v2.css /
   paths-v23.css / search-v24.css. Цвета, сетки и поведение компонентов не меняются.
   Шкала шрифтов: подписи 12–13px, второстепенный текст 14–15px, основной 16–17px. */

/* ---------- Каркас: боковое меню, верхняя панель ---------- */
:root{--sidebar:268px;--topbar-h:60px}
html{scroll-padding-top:calc(var(--topbar-h) + 16px)}
@media(max-width:1320px){:root{--sidebar:244px}}
@media(max-width:1100px){:root{--topbar-h:60px}}

.side{padding:20px 14px 14px}
.logo{padding:2px 8px 16px}
.logo strong{font-size:20px}
.logo small{font-size:12px}
.nav-label{margin:20px 12px 8px;font-size:11.5px}
.nav-list{gap:2px}
.nav-link{padding:9px 12px;font-size:14.5px;gap:12px}
.side-note{font-size:12.5px;padding:12px 12px 4px}

.topbar{height:var(--topbar-h);position:sticky;top:0;z-index:40;gap:16px}
.quicksearch{height:42px;width:min(520px,55%)}
.quicksearch input{font-size:14.5px}
.quicksearch button{font-size:13.5px;padding:7px 13px}
.iconbtn{width:42px;height:42px}
.profile-pill{font-size:14px}
@media(max-width:1100px){.topbar{height:var(--topbar-h)}.mobile-brand{font-size:16px}}
@media(max-width:500px){.topbar{height:56px}.quicksearch{height:40px}.quicksearch input{font-size:14px}.iconbtn{width:40px;height:40px;flex-basis:40px}}

.content{padding-top:24px}
.footer{font-size:12.5px;padding-block:22px}
.breadcrumbs{font-size:13.5px;margin:0 0 6px}

/* ---------- Главная: компактный hero ---------- */
.hero{min-height:0;border-radius:22px}
.hero-copy{padding:clamp(24px,2.4vw,38px) clamp(26px,3.2vw,52px)}
.hero h1{font-size:clamp(2.1rem,2.8vw,2.9rem);letter-spacing:-.045em;line-height:1.1;margin:16px 0 14px}
.hero p{font-size:clamp(15.5px,1.15vw,17.5px);line-height:1.65;max-width:640px;margin-bottom:22px}
.overline{font-size:12px}
.hero .button{min-height:46px;font-size:15px;padding:11px 22px}
.hero-facts{margin-top:26px;gap:28px;font-size:13.5px}
.hero-facts b{font-size:22px}
.hero-art>svg{width:min(100%,330px);max-height:290px}
.orbit-label{font-size:12.5px;padding:7px 12px}

.section-wrap{margin-top:40px}
.section-heading{margin-bottom:18px}
.section-heading .muted{font-size:14px}
.eyebrow{font-size:12px}

.category-tile{padding:22px;min-height:178px}
.tile-icon{width:46px;height:46px;margin-bottom:16px}
.category-tile strong{font-size:17px}
.category-tile p{font-size:14px;line-height:1.5;margin:7px 0 12px}
.tile-count{font-size:12.5px}

.practice-strip{margin-top:40px;padding:24px 32px}
.practice-strip p{font-size:15px}
.article-card{padding:22px;min-height:190px}
.article-card strong{font-size:19px}
.article-card p{font-size:14px;line-height:1.6}
.card-go{font-size:13.5px}
.bottom-guide{margin-top:32px}
.bottom-guide>div,.bottom-guide p{font-size:14px}

/* ---------- Шапки внутренних страниц ---------- */
.page-header{padding:14px 0 18px}
.page-header.compact{padding-top:8px}
.page-header h1{font-size:clamp(2rem,2.7vw,2.7rem);margin:6px 0 10px;letter-spacing:-.04em}
.page-header p{font-size:17px;line-height:1.65;margin-bottom:0}
.page-header-icon{width:48px;height:48px;border-radius:14px;margin-bottom:10px}
/* Значок раздела стоит слева от заголовка, а не над ним: экономит высоту */
@media(min-width:761px){
  .page-header:has(>.page-header-icon){display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:18px;align-items:center;max-width:100%}
  .page-header:has(>.page-header-icon)>.page-header-icon{grid-row:1/3;margin:0;width:64px;height:64px}
  .page-header:has(>.page-header-icon)>.page-header-icon .ico{width:34px;height:34px}
  .page-header:has(>.page-header-icon)>.eyebrow{align-self:end}
  .page-header:has(>.page-header-icon)>h1{margin:2px 0 0;align-self:start}
  .page-header:has(>.page-header-icon)>p{grid-column:1/-1;margin-top:14px}
}
.page-header-icon .ico{width:26px;height:26px}
.anchor-row{margin:0 0 22px}
.anchor-row a{font-size:13.5px;padding:8px 15px}
.article-main h1{font-size:clamp(2.1rem,3vw,3rem);margin:10px 0}
.article-lede{font-size:18px}
.article-meta{font-size:13.5px;margin:18px 0 20px}
.article-cover{height:190px}
.save-btn{font-size:13.5px}

/* ---------- Текст и карточки ---------- */
.mini-panel p{font-size:15px}
.resource-link>strong{font-size:15px}
.resource-link small{font-size:12.5px}
.article-body p{font-size:17px;line-height:1.8}
.article-body h2{font-size:26px}
.source-list{font-size:14.5px}
.article-practice p{font-size:15px}
.resource-box strong{font-size:14.5px}
.resource-box small{font-size:12.5px}
.article-aside{top:calc(var(--topbar-h) + 18px)}
.aside-panel>a{font-size:14px}
.aside-note,.aside-note p{font-size:14px}

.practice-card strong{font-size:18px}
.practice-card p{font-size:14px;line-height:1.55}
.practice-card small{font-size:12.5px}
.exercise-meta span{font-size:13.5px}
.quiz-top{font-size:13.5px}
.quiz-option{font-size:16px;padding:15px 18px}
.answer-explanation{font-size:15px}
.notice{font-size:14.5px}
.exercise-feedback{font-size:15px}
.interactive-card .loading{font-size:15px}
.daily-plan strong{font-size:17px}
.daily-plan small{font-size:13.5px}
.topic-progress small{font-size:13.5px}
.quiz-draft-info{font-size:14px}
.focus-form label{font-size:15px}
.practice-filter label{font-size:14px}
.practice-filter .filter-count{font-size:14px}
.seo-guide p,.seo-guide li{font-size:16.5px}
.seo-guide h3{font-size:18px}

/* ---------- Профиль, таблицы, формы ---------- */
.profile-stats small{font-size:13.5px}
.bar-col{font-size:12px}
.achievement{font-size:14.5px}
.achievement span{font-size:12px}
.fineprint{font-size:13px!important}
td,th{font-size:14px;padding:12px 10px}
th{font-size:11.5px}
.admin-form label,.admin-columns label{font-size:14px}
.admin-form input,.admin-form textarea,.admin-form select,.admin-columns select{font-size:15px}
.button{font-size:14px}
.button.small{font-size:13px;min-height:36px}

/* ---------- Маршруты (v23) ---------- */
.route-home-banner p,.route-category-teaser p,.route-notice{font-size:14.5px}
.route-tile>p{font-size:14.5px}
.route-foot{font-size:13.5px}
.route-progress-head strong{font-size:15px}
.route-step-main p{font-size:15.5px}
.route-step-main small{font-size:13.5px}
.route-intro p,.route-bottom p{font-size:16.5px}
.route-mini-grid strong{font-size:15px}
.route-mini-grid span{font-size:13px}

/* ---------- Поиск (v24) ---------- */
.search-filters>label{font-size:14px}
.search-results-head p{font-size:15px}
.search-tabs a{font-size:14px}
.search-result-link p{font-size:15px}
.search-result-go{font-size:14px}
.search-suggestions a{font-size:15px}
.search-pagination{font-size:15px}
.search-duration{font-size:13px}
.section-essay>p{font-size:clamp(16px,1.1vw,17.5px)}
.section-essay-tip p{font-size:15.5px}

/* ---------- Широкие экраны: больше столбцов ---------- */
@media screen and (min-width:1600px){
  .category-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .article-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
  .practice-list{grid-template-columns:repeat(3,minmax(0,1fr))}
  .learning-route-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media screen and (min-width:1900px){
  .category-grid{grid-template-columns:repeat(7,minmax(0,1fr))}
  .article-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .practice-list{grid-template-columns:repeat(4,minmax(0,1fr))}
  .learning-route-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
  .category-tile{min-height:170px}
  .content{padding-inline:clamp(28px,2.6vw,64px)}
}
@media screen and (min-width:2400px){
  .category-grid{grid-template-columns:repeat(9,minmax(0,1fr))}
  .article-grid{grid-template-columns:repeat(8,minmax(0,1fr))}
  .practice-list{grid-template-columns:repeat(5,minmax(0,1fr))}
  .learning-route-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
}

/* ---------- Планшеты и телефоны ---------- */
@media(max-width:760px){
  .content{padding-top:16px}
  .hero-copy{padding:26px 22px}
  .hero h1{font-size:clamp(2.1rem,8.5vw,2.8rem)}
  .hero p{font-size:15.5px}
  .hero-facts{margin-top:22px;gap:18px;font-size:13px}
  .hero-facts b{font-size:20px}
  .page-header h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .page-header p{font-size:16px}
  .category-tile{min-height:0}
}
@media(max-width:500px){
  .hero{border-radius:18px}
  .hero-copy{padding:24px 18px}
  .hero p{font-size:15px}
  .hero-facts{font-size:12.5px}
  .category-grid{gap:9px}
  .category-tile{padding:14px}
  .category-tile strong{font-size:15.5px}
  .category-tile p{font-size:13px}
  .tile-count{font-size:12px}
  .article-body p{font-size:16px}
  .article-body h2{font-size:23px}
  .page-header p{font-size:15.5px}
  .anchor-row a{font-size:13px}
  .exercise-meta span{font-size:12.5px}
  .bar-col{font-size:10.5px}
  .quiz-option{font-size:15.5px;padding:13px 14px}
  .seo-guide p,.seo-guide li{font-size:15.5px}
  .article-lede{font-size:17px}
}
@media print{.topbar{position:static}}

/* =====================================================================
   Визуальное обновление v25: мягкая глубина, стекло, градиенты, движение.
   Палитра сохранена (зелёно-бирюзовая), меняются поверхности и акценты.
   ===================================================================== */
:root{
  --shadow-sm:0 1px 2px rgba(20,56,48,.05),0 6px 18px -6px rgba(20,56,48,.08);
  --shadow-lg:0 2px 4px rgba(20,56,48,.05),0 22px 44px -16px rgba(20,70,60,.28);
  --ring:0 0 0 4px rgba(55,151,137,.2);
  --r:20px;
}
html[data-theme="dark"]{
  --shadow-sm:0 1px 2px rgba(0,0,0,.3),0 6px 18px -6px rgba(0,0,0,.4);
  --shadow-lg:0 2px 4px rgba(0,0,0,.35),0 24px 48px -16px rgba(0,0,0,.6);
  --ring:0 0 0 4px rgba(124,213,189,.22);
}
::selection{background:var(--teal2);color:#fff}
body{
  background:
    radial-gradient(900px 480px at 88% -8%,rgba(55,151,137,.13),transparent 62%),
    radial-gradient(780px 460px at 18% -12%,rgba(203,149,85,.09),transparent 60%),
    var(--bg);
  background-attachment:fixed;
}
html[data-theme="dark"] body{
  background:
    radial-gradient(900px 480px at 88% -8%,rgba(55,151,137,.16),transparent 62%),
    radial-gradient(780px 460px at 18% -12%,rgba(203,149,85,.05),transparent 60%),
    var(--bg);
  background-attachment:fixed;
}
*{scrollbar-width:thin;scrollbar-color:var(--line) transparent}

/* Боковое меню */
.side{background:linear-gradient(180deg,var(--surface),color-mix(in srgb,var(--surface) 92%,var(--mint)));border-right-color:color-mix(in srgb,var(--line) 70%,transparent)}
.logo-icon{background:linear-gradient(140deg,#25897b,#0f3a35);box-shadow:0 6px 16px -4px rgba(18,60,55,.45);border-radius:14px}
.logo strong{background:linear-gradient(90deg,var(--ink),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-link{border-radius:12px;position:relative;transition:background .18s,color .18s,transform .18s}
.nav-link .ico{transition:transform .18s}
.nav-link:hover{transform:translateX(2px)}
.nav-link:hover .ico{transform:scale(1.1)}
.nav-link.is-active{background:linear-gradient(90deg,var(--mint),color-mix(in srgb,var(--mint) 35%,transparent));color:var(--teal);font-weight:700}
.nav-link.is-active::before{content:"";position:absolute;left:-14px;top:9px;bottom:9px;width:4px;border-radius:0 4px 4px 0;background:var(--teal)}

/* Верхняя панель: стекло */
.topbar{background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:saturate(1.5) blur(14px);-webkit-backdrop-filter:saturate(1.5) blur(14px);border-bottom-color:color-mix(in srgb,var(--line) 60%,transparent)}
.quicksearch{border-radius:14px;box-shadow:var(--shadow-sm);transition:box-shadow .2s,border-color .2s}
.quicksearch:focus-within{border-color:var(--teal2);box-shadow:var(--ring)}
.quicksearch button{background:var(--mint);color:var(--teal);border-radius:10px;transition:background .15s}
.quicksearch button:hover{background:color-mix(in srgb,var(--mint) 70%,var(--teal2))}
.iconbtn{border-radius:14px;box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s}
.iconbtn:hover{transform:translateY(-1px);border-color:var(--teal2)}
.profile-pill{padding:8px 14px;border-radius:99px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:border-color .15s,transform .15s}
.profile-pill:hover{border-color:var(--teal2);transform:translateY(-1px)}

/* Кнопки */
.button{border-radius:12px;transition:transform .16s,box-shadow .16s,background .16s,border-color .16s}
.button:hover{transform:translateY(-2px)}
.button.primary{background:linear-gradient(135deg,#bdf3e0,#8edcc2);color:#0f362f;box-shadow:0 8px 20px -8px rgba(110,220,190,.7)}
.button.primary:hover{box-shadow:0 12px 26px -8px rgba(110,220,190,.9)}
.button.secondary{box-shadow:var(--shadow-sm)}
.button.secondary:hover{border-color:var(--teal2)}
.hero .button{border-radius:999px;padding-inline:26px}
.hero .button.secondary{background:rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-color:rgba(255,255,255,.28)}
.hero .button.secondary:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}

/* Hero */
.hero{
  background:
    radial-gradient(620px 420px at 78% 45%,rgba(90,210,178,.26),transparent 66%),
    radial-gradient(520px 320px at -4% -10%,rgba(241,194,124,.17),transparent 60%),
    linear-gradient(135deg,#0e3732 0%,#14493f 55%,#0b2f2b 100%);
  box-shadow:0 30px 60px -30px rgba(10,50,44,.55);
  isolation:isolate;
}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(ellipse at 70% 50%,#000 10%,transparent 72%);mask-image:radial-gradient(ellipse at 70% 50%,#000 10%,transparent 72%)}
.hero h1 em{background:linear-gradient(90deg,#c5f6e4,#86dcc4 55%,#f3cd8d);-webkit-background-clip:text;background-clip:text;color:transparent}
.overline{display:inline-flex;padding:6px 14px 6px 12px;border-radius:99px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14)}
.hero-facts{gap:12px}
.hero-facts>span{display:inline-flex;align-items:baseline;gap:8px;padding:9px 16px;border-radius:14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.hero-facts b{margin:0}
.hero-art>svg{filter:drop-shadow(0 0 40px rgba(120,230,200,.3));animation:floaty 7s ease-in-out infinite}
.orbit-label{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:floaty 6s ease-in-out infinite}
.orbit-b{animation-delay:-2s}.orbit-c{animation-delay:-4s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* Карточки: единый язык */
.category-tile,.article-card,.practice-card,.route-tile,.search-result-link,.mini-panel,.daily-plan a,.section-essay,.seo-guide,
.interactive-card,.aside-panel,.profile-stats>div,.route-step,.route-intro,.route-bottom,.route-progress-panel,.route-home-banner,
.search-intro,.search-empty,.site-search-form,.practice-filter,.admin-form{
  border-radius:var(--r);border-color:color-mix(in srgb,var(--line) 85%,transparent);box-shadow:var(--shadow-sm)}
@media(hover:hover){
  .category-tile:hover,.article-card:hover,.practice-card:hover,.route-tile:hover,.search-result-link:hover,.daily-plan a:hover{
    transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--teal2) 55%,var(--line))}
}
.category-tile,.practice-card,.article-card{position:relative;overflow:hidden;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s,border-color .22s}
.category-tile::before,.practice-card::before{content:"";position:absolute;right:-60px;top:-60px;width:170px;height:170px;border-radius:50%;
  background:radial-gradient(circle,color-mix(in srgb,var(--teal2) 28%,transparent),transparent 68%);opacity:0;transition:opacity .3s;pointer-events:none}
.category-tile:hover::before,.practice-card:hover::before{opacity:1}
.tile-icon,.practice-icon,.resource-link>span,.page-header-icon{background:linear-gradient(140deg,color-mix(in srgb,var(--mint) 70%,#fff),var(--mint));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--teal2) 22%,transparent);transition:background .22s,color .22s,transform .22s}
.tile-icon{border-radius:14px}
.category-tile:hover .tile-icon,.practice-card:hover .practice-icon{background:linear-gradient(140deg,var(--teal2),var(--teal));color:var(--surface);transform:scale(1.06) rotate(-3deg)}
.tile-count{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-weight:650}
.tile-count::after{content:"→";color:var(--teal);opacity:0;transform:translateX(-6px);transition:opacity .2s,transform .2s;font-weight:800}
.category-tile:hover .tile-count{color:var(--teal)}
.category-tile:hover .tile-count::after{opacity:1;transform:none}
.card-go .ico,.practice-card>.ico{transition:transform .2s}
.article-card:hover .card-go .ico,.practice-card:hover>.ico{transform:translateX(4px)}

/* Блок практики */
.practice-strip{border-radius:24px;background:
  radial-gradient(420px 220px at 92% 0%,rgba(255,255,255,.14),transparent 70%),
  linear-gradient(110deg,#2a7a6d,#144a43);box-shadow:0 24px 50px -26px rgba(15,70,60,.6)}
.practice-symbol{background:rgba(255,255,255,.14);box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}

/* Шапки страниц */
.page-header .eyebrow{display:inline-flex;align-self:center;justify-self:start;padding:5px 12px;border-radius:99px;background:color-mix(in srgb,var(--mint) 85%,transparent);border:1px solid color-mix(in srgb,var(--teal2) 20%,transparent)}
.page-header h1{background:linear-gradient(115deg,var(--ink) 45%,var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent;padding-bottom:.06em}
.breadcrumbs a{transition:color .15s}
.section-heading h2{position:relative}

/* Тесты и упражнения */
.quiz-option{border-radius:14px;transition:border-color .15s,background .15s,transform .15s,box-shadow .15s}
.quiz-option:hover{transform:translateX(3px);box-shadow:var(--shadow-sm)}
.quiz-progress{height:8px}
.quiz-progress span{background:linear-gradient(90deg,var(--teal2),var(--teal))}
.route-meter>i{background:linear-gradient(90deg,var(--teal2),var(--teal))}
.interactive-card{border-radius:24px;box-shadow:var(--shadow-sm),0 0 0 1px color-mix(in srgb,var(--line) 40%,transparent)}
.exercise-meta span,.anchor-row a,.search-tabs a{border-radius:99px;box-shadow:var(--shadow-sm)}
.anchor-row a:hover,.search-tabs a:hover{border-color:var(--teal2);color:var(--teal)}
.answer-explanation,.section-essay-tip{border-radius:0 14px 14px 0}
.choice-row button,.schulte-grid button,.alternate-grid button,.route-grid button{transition:transform .12s,border-color .15s,background .15s}
.choice-row button:active,.schulte-grid button:active{transform:scale(.97)}

/* Поля */
input,select,textarea{transition:border-color .15s,box-shadow .15s}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none!important;border-color:var(--teal2)!important;box-shadow:var(--ring)}

/* Таблицы */
tbody tr{transition:background .12s}
tbody tr:hover{background:color-mix(in srgb,var(--mint) 45%,transparent)}
.footer{border-top-color:color-mix(in srgb,var(--line) 70%,transparent)}

/* Появление страницы */
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:no-preference){
  .content>*{animation:rise .5s cubic-bezier(.2,.7,.2,1) both}
  .content>*:nth-child(2){animation-delay:.05s}.content>*:nth-child(3){animation-delay:.1s}.content>*:nth-child(4){animation-delay:.15s}
  .category-tile,.article-card{animation:rise .5s cubic-bezier(.2,.7,.2,1) both}
  .category-grid>*:nth-child(n){animation-delay:calc(var(--i,0)*30ms)}
}
@media(prefers-reduced-motion:reduce){.hero-art>svg,.orbit-label{animation:none}}
@media print{body{background:#fff!important}.hero::before{display:none}}
@media(max-width:500px){.hero-facts{gap:8px}.hero-facts>span{padding:7px 12px;gap:6px}.hero-facts b{font-size:18px}.overline{font-size:11px}}