/* ==========================================================================
   krutawan.com — white & blue AI theme, light / dark
   Font: Google Sans (self-hosted, OFL) — same family as Novituz Learn
   ========================================================================== */

@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:400;src:url(../fonts/google-sans-thai-400.woff2) format("woff2");unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:500;src:url(../fonts/google-sans-thai-500.woff2) format("woff2");unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:600;src:url(../fonts/google-sans-thai-600.woff2) format("woff2");unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:700;src:url(../fonts/google-sans-thai-700.woff2) format("woff2");unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:400;src:url(../fonts/google-sans-latin-ext-400.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:500;src:url(../fonts/google-sans-latin-ext-500.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:600;src:url(../fonts/google-sans-latin-ext-600.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:700;src:url(../fonts/google-sans-latin-ext-700.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:400;src:url(../fonts/google-sans-latin-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:500;src:url(../fonts/google-sans-latin-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:600;src:url(../fonts/google-sans-latin-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Google Sans";font-style:normal;font-display:swap;font-weight:700;src:url(../fonts/google-sans-latin-700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ---------- tokens ---------- */
:root{
  --bg:#ffffff; --bg-soft:#f5f8ff; --surface:#ffffff; --surface-2:#eef4ff; --glass:rgba(255,255,255,.72);
  --border:#e2e9f6; --border-strong:#cfdaf0;
  --text:#0b1733; --text-2:#33415e; --muted:#5f6f8f;
  --primary:#1d6cf2; --primary-2:#22c3ff; --primary-ink:#ffffff; --primary-soft:#e7f0ff; --primary-text:#1257cc;
  --grad:linear-gradient(120deg,#1d6cf2 0%,#3b82f6 45%,#22c3ff 100%);
  --ring:0 0 0 4px rgba(29,108,242,.18);
  --shadow-sm:0 1px 2px rgba(15,35,80,.05),0 2px 8px rgba(15,35,80,.05);
  --shadow:0 2px 4px rgba(15,35,80,.04),0 12px 32px rgba(15,35,80,.08);
  --shadow-lg:0 24px 60px rgba(29,108,242,.18);
  --ok:#0f9f6e; --warn:#c77700; --danger:#d93838;
  --radius:20px; --radius-sm:12px;
  --font:"Google Sans","Noto Sans Thai","Leelawadee UI",Tahoma,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:72px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#070d1c; --bg-soft:#0a1326; --surface:#0e1930; --surface-2:#13223f; --glass:rgba(14,25,48,.66);
    --border:#1c2c4d; --border-strong:#284070;
    --text:#e9efff; --text-2:#c3cee8; --muted:#8fa0c4;
    --primary:#4d8dff; --primary-2:#38d3ff; --primary-ink:#04112b; --primary-soft:#132a55; --primary-text:#8fb6ff;
    --grad:linear-gradient(120deg,#4d8dff 0%,#5aa2ff 45%,#38d3ff 100%);
    --ring:0 0 0 4px rgba(77,141,255,.28);
    --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 12px 32px rgba(0,0,0,.35); --shadow-lg:0 24px 60px rgba(30,100,255,.25);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#070d1c; --bg-soft:#0a1326; --surface:#0e1930; --surface-2:#13223f; --glass:rgba(14,25,48,.66);
  --border:#1c2c4d; --border-strong:#284070;
  --text:#e9efff; --text-2:#c3cee8; --muted:#8fa0c4;
  --primary:#4d8dff; --primary-2:#38d3ff; --primary-ink:#04112b; --primary-soft:#132a55; --primary-text:#8fb6ff;
  --grad:linear-gradient(120deg,#4d8dff 0%,#5aa2ff 45%,#38d3ff 100%);
  --ring:0 0 0 4px rgba(77,141,255,.28);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4); --shadow:0 12px 32px rgba(0,0,0,.35); --shadow-lg:0 24px 60px rgba(30,100,255,.25);
  color-scheme:dark;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.7 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;transition:background-color .35s ease,color .35s ease}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--primary-text);text-decoration:none;transition:color .25s ease,opacity .25s ease}
h1,h2,h3,h4{line-height:1.3;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em;color:var(--text)}
p{margin:0 0 1em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:8px}
::selection{background:rgba(29,108,242,.2)}
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
.narrow{max-width:860px}
.center{text-align:center}
.muted{color:var(--muted)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--primary);color:#fff;padding:10px 16px;border-radius:10px}
.skip:focus{top:12px}
.ic{width:20px;height:20px;flex:none}
.ic-xl{width:44px;height:44px}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.stretched::after{content:"";position:absolute;inset:0;z-index:1;border-radius:inherit}
.grad-text{background:var(--grad);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.js .no-js-only{display:none}

/* ---------- buttons & chips ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:15px;cursor:pointer;white-space:nowrap;overflow:hidden;isolation:isolate;transition:transform .25s ease,box-shadow .3s ease,background-color .25s ease,color .25s ease,border-color .25s ease}
.btn .ic{width:18px;height:18px;transition:transform .3s ease}
.btn:hover .ic:last-child{transform:translateX(3px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-block{width:100%}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(29,108,242,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(29,108,242,.35);color:#fff}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-text);transform:translateY(-2px)}
.btn-white{background:#fff;color:#0f3fa8}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18);color:#0f3fa8}
.btn.is-disabled{opacity:.6;cursor:default;transform:none}
/* shine sweep on hover */
.btn-shine::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-120%);transition:transform .8s ease}
.btn-shine:hover::before{transform:translateX(120%)}
.icon-btn{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);cursor:pointer;transition:all .25s ease}
.icon-btn:hover{color:var(--primary-text);border-color:var(--primary);transform:translateY(-1px)}
.pill-btn{display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);font-weight:600;font-size:14px;transition:all .25s ease}
.pill-btn:hover{color:var(--primary-text);border-color:var(--primary)}
.pill-btn .ic{width:18px;height:18px}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--text-2);font-size:14px;font-weight:500;transition:all .25s ease}
.chip:hover{background:var(--primary-soft);color:var(--primary-text);border-color:transparent;transform:translateY(-2px)}
.chip-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.25);color:#fff}
.chip-light:hover{background:#fff;color:#0f3fa8}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:8px;font-size:12.5px;font-weight:600;background:var(--primary-soft);color:var(--primary-text)}
.tag-soft{background:var(--surface-2);color:var(--muted)}
.tag-level-intermediate{background:rgba(199,119,0,.12);color:#b56b00}
.tag-level-advanced{background:rgba(217,56,56,.11);color:#c23030}
:root[data-theme="dark"] .tag-level-intermediate{color:#ffb84d}
:root[data-theme="dark"] .tag-level-advanced{color:#ff8a8a}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary-text)}
.link-arrow .ic{width:18px;height:18px;transition:transform .3s ease}
.link-arrow:hover .ic{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);background:var(--glass);backdrop-filter:saturate(1.6) blur(16px);-webkit-backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid transparent;transition:border-color .3s ease,box-shadow .3s ease,background-color .35s ease}
.site-header.scrolled{border-color:var(--border);box-shadow:var(--shadow-sm)}
.header-row{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:none}
.brand-mark svg{width:36px;height:36px;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.brand:hover .brand-mark svg{transform:rotate(90deg)}
.brand-text{font-weight:700;font-size:20px;letter-spacing:-.02em}
.brand-text span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-img{max-height:44px;width:auto}
.main-nav{flex:1;display:flex;align-items:center;justify-content:center}
.nav-list{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav-list a{position:relative;display:block;padding:8px 14px;border-radius:999px;color:var(--text-2);font-weight:500;font-size:15px}
.nav-list a::after{content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;background:var(--grad);transition:left .3s ease,right .3s ease}
.nav-list a:hover::after,.nav-list a.active::after{left:14px;right:14px}
.nav-list a:hover,.nav-list a.active{color:var(--primary-text)}
.nav-cta{display:none}
.header-tools{display:flex;align-items:center;gap:8px;margin-left:auto}
.theme-btn .ic-moon{display:none}
:root[data-theme="dark"] .theme-btn .ic-sun{display:none}
:root[data-theme="dark"] .theme-btn .ic-moon{display:block}
.menu-btn{display:none}
.menu-btn .ic-close{display:none}
.menu-open .menu-btn .ic-open{display:none}
.menu-open .menu-btn .ic-close{display:block}

/* hover-fade group: hovering one link softly fades its siblings */
@media (hover:hover){
  .fade-group:hover a{opacity:.5}
  .fade-group:hover a:hover{opacity:1}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:56px 0 40px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(600px 380px at 85% 10%,rgba(34,195,255,.20),transparent 70%),
    radial-gradient(700px 460px at 10% 0%,rgba(29,108,242,.16),transparent 70%),
    linear-gradient(180deg,var(--bg-soft),var(--bg))}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:44px 44px;opacity:.55;-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 20%,#000 30%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 20%,#000 30%,transparent 75%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);font-size:14px;font-weight:600;color:var(--primary-text);margin-bottom:22px}
.dot-live,.live-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 rgba(34,197,94,.5);animation:pulse 2s infinite}
.hero-title{font-size:clamp(36px,5.6vw,64px);line-height:1.18;letter-spacing:-.025em;margin-bottom:20px}
.hero-title .line{display:block}
.hero-title .w{display:inline-block;transition:transform .35s cubic-bezier(.2,.8,.2,1),opacity .35s ease}
.hero-title .grad-text .w{background:inherit;-webkit-background-clip:text;background-clip:text}
/* hover: words lift individually */
@media (hover:hover){.hero-title .w:hover{transform:translateY(-6px)}}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:var(--muted);max-width:560px;margin-bottom:26px}
.hero-search{display:flex;align-items:center;gap:8px;max-width:560px;padding:6px 6px 6px 18px;border-radius:999px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);transition:box-shadow .3s ease,border-color .3s ease}
.hero-search:focus-within{border-color:var(--primary);box-shadow:var(--shadow),var(--ring)}
.hero-search>.ic{color:var(--muted)}
.hero-search input{flex:1;min-width:0;border:0;background:transparent;outline:0;height:44px;font-size:16px}
.popular{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:16px 0 26px;font-size:14px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* hero visual */
.hero-visual{position:relative;height:480px}
.orb{position:absolute;inset:50% auto auto 50%;width:340px;height:340px;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle at 35% 30%,#ffffff 0%,#9cd8ff 22%,#3b82f6 60%,#1d4fd8 100%);box-shadow:0 30px 90px rgba(29,108,242,.45),inset -20px -30px 60px rgba(10,40,140,.45);animation:breathe 8s ease-in-out infinite}
:root[data-theme="dark"] .orb{background:radial-gradient(circle at 35% 30%,#bfe9ff 0%,#4d8dff 35%,#1d3fa8 75%,#0b1c55 100%)}
.ring{position:absolute;left:50%;top:50%;border-radius:50%;border:1px dashed var(--border-strong);transform:translate(-50%,-50%)}
.ring-1{width:420px;height:420px;animation:spin 40s linear infinite}
.ring-2{width:500px;height:500px;opacity:.6;animation:spin 60s linear infinite reverse}
.glass{position:absolute;background:var(--glass);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border:1px solid rgba(255,255,255,.6);border-radius:18px;box-shadow:var(--shadow-lg)}
:root[data-theme="dark"] .glass{border-color:rgba(120,160,255,.18)}
.card-code{left:0;top:40px;width:300px;padding:14px 16px;font-size:13px}
.card-code pre{margin:8px 0 0;font:500 12.5px/1.65 var(--mono);color:var(--text-2);white-space:pre}
.win-dots{display:flex;align-items:center;gap:6px}
.win-dots i{width:10px;height:10px;border-radius:50%;background:#ff5f57}
.win-dots i:nth-child(2){background:#febc2e}.win-dots i:nth-child(3){background:#28c840}
.win-dots span{margin-left:8px;font-size:12px;color:var(--muted)}
.tk-k{color:#7c3aed}.tk-f{color:var(--primary)}.tk-s{color:#0f9f6e}
:root[data-theme="dark"] .tk-k{color:#c4a5ff}:root[data-theme="dark"] .tk-s{color:#5ee0a8}
.card-award{right:0;top:28px;display:flex;align-items:center;gap:12px;padding:14px 18px}
.card-award strong{display:block;font-size:15px}
.card-award small{display:block;color:var(--muted);font-size:12px}
.award-ic{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#ffd257,#ff9d00);color:#fff}
.card-progress{right:24px;bottom:36px;width:230px;padding:14px 18px;display:grid;gap:6px}
.card-progress .row{display:flex;align-items:center;gap:8px;color:var(--muted)}
.card-progress .bar{display:block;height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.card-progress .bar span{display:block;height:100%;width:72%;border-radius:inherit;background:var(--grad);animation:grow 2.4s cubic-bezier(.2,.8,.2,1) both .8s}
/* hero photo (Admin → ตั้งค่า → รูปหน้าแรก) replaces the orb */
.glass{z-index:2}
.has-photo .orb{display:none}
.has-photo::before{content:"";position:absolute;left:50%;bottom:4%;width:78%;aspect-ratio:1;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle,rgba(34,195,255,.28),rgba(29,108,242,.10) 55%,transparent 70%);filter:blur(10px)}
.hero-photo{position:absolute;inset:0;z-index:1;width:100%;height:100%;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 24px 40px rgba(15,35,80,.18));-webkit-mask-image:linear-gradient(to bottom,#000 86%,transparent);mask-image:linear-gradient(to bottom,#000 86%,transparent);animation:photoIn 1.1s cubic-bezier(.2,.8,.2,1) backwards .25s;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
@media (hover:hover){.has-photo:hover .hero-photo{transform:translateY(-8px) scale(1.015)}}
@keyframes photoIn{from{opacity:0;transform:translateY(30px) scale(.97);filter:blur(8px)}to{opacity:1;transform:none}}
.has-photo .card-code{display:none}
.has-photo .card-award{top:auto;bottom:40px;left:-32px;right:auto}
.has-photo .card-progress{top:auto;bottom:110px;right:-32px;width:200px}
.float-a{animation:floaty 7s ease-in-out infinite}
.float-b{animation:floaty 6s ease-in-out infinite .8s}
.float-c{animation:floaty 8s ease-in-out infinite 1.6s}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:48px 0 0;padding:22px 8px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}
.stats>div{display:flex;flex-direction:column-reverse;align-items:center;text-align:center;padding:4px 10px;border-right:1px solid var(--border)}
.stats>div:last-child{border-right:0}
.stats dt{font-size:14px;color:var(--muted)}
.stats dd{margin:0;font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- sections ---------- */
.section{position:relative;padding:80px 0}
.section-tight{padding:40px 0 80px}
.section-soft{background:var(--bg-soft)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-title{font-size:clamp(26px,3vw,36px);margin-bottom:6px}
.sec-sub{color:var(--muted);margin:0}
.h-section{font-size:24px;margin:32px 0 12px}

/* tools */
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tool,.contact-card{position:relative;padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s ease,border-color .35s ease}
.tool:hover,.contact-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.tool-ic{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:var(--primary-soft);color:var(--primary-text);margin-bottom:18px;transition:transform .4s ease,background .3s ease,color .3s ease}
.tool-ic .ic{width:26px;height:26px}
.tool:hover .tool-ic{background:var(--grad);color:#fff;transform:rotate(-6deg) scale(1.06)}
.tool-title{font-size:18px;margin-bottom:6px}
.tool-title a{color:var(--text)}
.tool p{font-size:14.5px;margin-bottom:16px}
.tool-go{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-text)}
.tool-go .ic{width:16px;height:16px;transition:transform .3s ease}
.tool:hover .tool-go .ic{transform:translateX(4px)}
.tool.is-soon .tool-go{color:var(--muted)}
.tool.is-soon:hover{transform:none}

/* learning paths */
.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.path{position:relative;display:flex;flex-direction:column;gap:6px;padding:26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);color:var(--text);overflow:hidden;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s ease}
.path::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:opacity .4s ease}
.path>*{position:relative}
.path:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);color:#fff}
.path:hover::before{opacity:1}
.path:hover .muted,.path:hover .path-no{color:rgba(255,255,255,.85)}
.path-no{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;transition:color .3s}
.path-ic{display:grid;place-items:center;width:52px;height:52px;margin:10px 0 8px;border-radius:16px;background:var(--primary-soft);color:var(--primary-text);transition:background .3s,color .3s}
.path-ic .ic{width:26px;height:26px}
.path:hover .path-ic{background:rgba(255,255,255,.2);color:#fff}
.path-title{font-size:19px}
.path .muted{transition:color .3s}
.path-arrow{position:absolute;right:22px;top:24px;opacity:.4;transition:transform .35s ease,opacity .35s}
.path:hover .path-arrow{opacity:1;transform:translateX(4px) rotate(-45deg)}

/* course cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ccard,.ncard{position:relative;display:flex;flex-direction:column;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s ease,border-color .35s ease}
.ccard:hover,.ncard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.ccard-media,.ncard-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.ccard-media img,.ncard-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.ccard:hover .ccard-media img,.ncard:hover .ncard-media img{transform:scale(1.06)}
.ph{position:relative;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#fff;overflow:hidden;background:linear-gradient(135deg,#1d6cf2,#22c3ff)}
.ph::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);background-size:28px 28px}
.ph::after{content:"";position:absolute;width:60%;aspect-ratio:1;right:-15%;bottom:-35%;border-radius:50%;background:rgba(255,255,255,.16)}
.ph-ic{position:relative;z-index:1;width:46px;height:46px;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.ph-label{position:relative;z-index:1;font-weight:600;font-size:15px;opacity:.95}
.ccard:hover .ph-ic,.ncard:hover .ph-ic{transform:scale(1.15) rotate(-6deg)}
.ph-web{background:linear-gradient(135deg,#1d6cf2,#22c3ff)}
.ph-mobile{background:linear-gradient(135deg,#4f46e5,#38bdf8)}
.ph-ml{background:linear-gradient(135deg,#0b3fb8,#7c3aed)}
.ph-data{background:linear-gradient(135deg,#0891b2,#22d3ee)}
.ph-ai{background:linear-gradient(135deg,#1e40af,#06b6d4)}
.ph-basic{background:linear-gradient(135deg,#2563eb,#60a5fa)}
.ph-news{background:linear-gradient(135deg,#1d4ed8,#38bdf8)}
.ph-lg .ph-ic{width:72px;height:72px}
.price-badge{position:absolute;top:12px;right:12px;z-index:2;padding:4px 12px;border-radius:999px;background:var(--surface);color:var(--text);font-weight:700;font-size:13.5px;box-shadow:var(--shadow-sm)}
.price-badge.is-free{background:#e8fbf3;color:#0b8a5e}
:root[data-theme="dark"] .price-badge.is-free{background:#0f3b2c;color:#6ee7b7}
.ccard-body,.ncard-body{display:flex;flex-direction:column;gap:10px;padding:20px 20px 22px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.ccard-title,.ncard-title{font-size:18px;line-height:1.45;margin:0}
.ccard-title a,.ncard-title a{color:var(--text);background:linear-gradient(var(--primary),var(--primary)) left bottom/0 2px no-repeat;transition:background-size .4s ease,color .3s ease}
.ccard:hover .ccard-title a,.ncard:hover .ncard-title a{color:var(--primary-text);background-size:100% 2px}
.ccard-body p,.ncard-body p{font-size:14.5px;margin:0}
.ccard-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:13.5px;color:var(--muted)}
.cat-chip,.meta-row,.meta-row span{display:inline-flex;align-items:center;gap:6px}
.meta-row{gap:12px}
.ccard-foot .ic{width:16px;height:16px}

/* news cards */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.date{font-size:13.5px;color:var(--primary-text);font-weight:600}
.ncard .link-arrow{margin-top:auto;font-size:14.5px}
.ncard:hover .link-arrow .ic{transform:translateX(4px)}

/* CTA */
.cta-band{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:48px;border-radius:28px;background:linear-gradient(120deg,#0f4fd1 0%,#1d6cf2 45%,#22c3ff 100%);color:#fff;overflow:hidden;box-shadow:var(--shadow-lg)}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px)}
.cta-band p{color:rgba(255,255,255,.88)}
.cta-glow{position:absolute;right:-120px;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.35),transparent 65%);animation:breathe 9s ease-in-out infinite}
.cta-band>div:not(.cta-glow){position:relative}
.topics{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- page head ---------- */
.page-head{position:relative;padding:40px 0 36px;overflow:hidden}
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 14px;padding:0;font-size:14px;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;opacity:.6}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary-text)}
.crumbs span{color:var(--text-2);display:inline-block;max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}
.page-title{font-size:clamp(28px,4vw,46px);letter-spacing:-.02em;max-width:900px}
.page-sub{font-size:17px;color:var(--muted);max-width:760px;margin:0}

/* ---------- catalog ---------- */
.catalog{display:grid;grid-template-columns:270px 1fr;gap:32px;align-items:start}
.filters{position:sticky;top:calc(var(--header-h) + 16px)}
.filters-box{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:6px 20px 20px;box-shadow:var(--shadow-sm)}
.filters-box summary{display:flex;align-items:center;justify-content:space-between;padding:14px 0;font-weight:700;cursor:pointer;list-style:none}
.filters-box summary::-webkit-details-marker{display:none}
.filters-box summary span{display:inline-flex;align-items:center;gap:8px}
.filters-box summary .ic{width:18px;height:18px;color:var(--primary-text)}
.reset{font-size:14px;font-weight:500}
.filter-search{display:flex;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--border);border-radius:12px;background:var(--bg-soft);margin-bottom:6px}
.filter-search:focus-within{border-color:var(--primary);box-shadow:var(--ring)}
.filter-search .ic{width:18px;height:18px;color:var(--muted)}
.filter-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;height:42px;font-size:15px}
.filters fieldset{border:0;border-top:1px solid var(--border);margin:14px 0 0;padding:14px 0 0}
.filters legend{font-weight:700;font-size:14.5px;padding:0;margin-bottom:8px}
.check{display:flex;align-items:center;gap:10px;padding:5px 0;font-size:14.5px;color:var(--text-2);cursor:pointer;transition:color .2s}
.check:hover{color:var(--primary-text)}
.check input{width:18px;height:18px;accent-color:var(--primary);margin:0}
.results-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.results-count{margin:0}
.sort{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--muted)}
.sort select{height:40px;padding:0 34px 0 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);cursor:pointer;color:var(--text)}
.card-grid-3{grid-template-columns:repeat(3,1fr)}
.empty{display:grid;justify-items:center;gap:10px;text-align:center;padding:60px 20px;border:1px dashed var(--border-strong);border-radius:var(--radius);color:var(--muted)}
.pager-wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:32px}
.pager-wrap p{margin:0}
.pager{display:flex;flex-wrap:wrap;gap:6px}
.pager a{display:inline-grid;place-items:center;min-width:40px;height:40px;padding:0 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);font-weight:600;transition:all .25s}
.pager a:hover{border-color:var(--primary);color:var(--primary-text)}
.pager a.on{background:var(--grad);color:#fff;border-color:transparent}

/* ---------- detail ---------- */
.detail{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.detail-media{border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;border:1px solid var(--border);background:var(--surface-2)}
.detail-media img{width:100%;height:100%;object-fit:cover}
.detail-side{position:sticky;top:calc(var(--header-h) + 16px)}
.side-card{padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}
.side-price{font-size:32px;font-weight:700;margin-bottom:14px}
.side-price.is-free{color:var(--ok)}
.side-h{font-size:16px;margin:24px 0 8px}
.info-list{margin:0}
.info-list>div{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-top:1px solid var(--border);font-size:14.5px}
.info-list dt{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}
.info-list dt .ic{width:17px;height:17px}
.info-list dd{margin:0;font-weight:600;text-align:right}
.prose{font-size:17px;color:var(--text-2);line-height:1.85}
.prose h2{font-size:24px;margin:1.6em 0 .6em}
.prose h3{font-size:20px;margin:1.4em 0 .5em}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.2em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--primary)}
.prose a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.prose a:hover{text-decoration-color:var(--primary-2)}
.prose code{font-family:var(--mono);font-size:.9em;padding:2px 6px;border-radius:6px;background:var(--surface-2)}
.prose blockquote{margin:1.2em 0;padding:12px 20px;border-left:4px solid var(--primary);background:var(--bg-soft);border-radius:0 12px 12px 0}
.prose strong{color:var(--text)}
.article-meta{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:14.5px}
.article-meta .ic{width:17px;height:17px}
.article-figure{margin:0 0 28px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.article-figure img{width:100%}
.lead{font-size:19px;color:var(--text);font-weight:500;line-height:1.75}

/* ---------- regrad & contact ---------- */
.choice-grid{display:grid;gap:16px}
.choice{position:relative;display:flex;align-items:center;gap:22px;padding:24px 26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s}
.choice:hover{transform:translateX(6px);box-shadow:var(--shadow);border-color:var(--primary)}
.choice-no{display:grid;place-items:center;flex:none;width:68px;height:68px;border-radius:20px;background:var(--grad);color:#fff;font-weight:700;font-size:20px;box-shadow:0 8px 20px rgba(29,108,242,.3)}
.choice-title{font-size:20px;margin-bottom:4px}
.choice-title a{color:var(--text)}
.choice p{margin:0;font-size:15px}
.choice-go{margin-left:auto;color:var(--primary-text);flex:none}
.choice-go .ic{width:24px;height:24px;transition:transform .3s}
.choice:hover .choice-go .ic{transform:translateX(6px)}
.note{display:flex;align-items:center;gap:10px;margin-top:24px;padding:14px 18px;border-radius:14px;background:var(--primary-soft);color:var(--primary-text);font-size:15px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact-card h2{font-size:18px}
.contact-big{font-size:18px;font-weight:600;word-break:break-word}
.nf{padding:100px 0;overflow:hidden}
.nf-code{font-size:clamp(90px,16vw,160px);font-weight:700;line-height:1;margin:0 0 8px;letter-spacing:-.04em}
.nf .hero-search{margin:28px auto 20px}

/* ---------- profile ---------- */
.profile{display:grid;grid-template-columns:340px 1fr;gap:32px;align-items:start}
.profile-card{position:sticky;top:calc(var(--header-h) + 16px);padding:24px;border-radius:24px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);text-align:center}
.profile-photo{position:relative;aspect-ratio:1;margin:-4px -4px 18px;border-radius:20px;overflow:hidden;background:radial-gradient(circle at 50% 70%,#9cd8ff 0%,#3b82f6 55%,#1d4fd8 100%)}
.profile-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center bottom;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.profile-card:hover .profile-photo img{transform:scale(1.04)}
.profile-photo.is-empty{display:grid;place-items:center;color:#fff}
.profile-name{font-size:22px;margin-bottom:4px}
.profile-actions{display:grid;gap:10px;margin-top:18px}
.profile-email{margin:-2px 0 4px;font-size:14px;color:var(--muted);word-break:break-all}
.profile-main{display:grid;gap:24px}
.profile-block{padding:28px;border-radius:24px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.profile-h{display:flex;align-items:center;gap:12px;font-size:22px;margin-bottom:16px}
.profile-h .tool-ic{margin:0;width:44px;height:44px;border-radius:14px}
.profile-h .tool-ic .ic{width:22px;height:22px}
.timeline ul{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.timeline li{position:relative;margin:0;padding:14px 18px 14px 44px;border-radius:16px;background:var(--bg-soft);border:1px solid var(--border);transition:transform .3s ease,border-color .3s ease}
.timeline li:hover{transform:translateX(4px);border-color:var(--primary)}
.timeline li::before{content:"";position:absolute;left:18px;top:22px;width:12px;height:12px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px var(--primary-soft)}
.news-grid-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){
  .profile{grid-template-columns:1fr}
  .profile-card{position:static;max-width:420px;margin:0 auto;width:100%}
}
@media (max-width:640px){.news-grid-2{grid-template-columns:1fr}.profile-block{padding:20px}}

/* ---------- announcement popup ---------- */
.promo{padding:0;border:0;background:transparent;overflow:visible;width:min(92vw,680px);max-width:none;max-height:92vh;opacity:0;transform:translateY(16px) scale(.95);transition:opacity .3s ease,transform .4s cubic-bezier(.2,.8,.2,1)}
.promo.show{opacity:1;transform:none}
.promo::backdrop{background:rgba(5,12,30,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.promo-img{display:block;width:100%;height:auto;max-height:88vh;object-fit:contain;border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.promo a{display:block;border-radius:20px;transition:transform .35s ease}
.promo a:hover{transform:scale(1.01)}
.promo-close{position:absolute;top:-16px;right:-16px;z-index:2;display:grid;place-items:center;width:42px;height:42px;border-radius:50%;border:0;background:#fff;color:#0b1733;box-shadow:0 6px 18px rgba(0,0,0,.3);cursor:pointer;transition:transform .25s ease}
.promo-close:hover{transform:rotate(90deg) scale(1.08)}
@media (max-width:640px){.promo-close{top:8px;right:8px;width:38px;height:38px}}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--bg-soft);padding:64px 0 24px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand p{color:var(--muted);margin:16px 0}
.footer-h{font-size:16px;margin-bottom:14px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-links a{color:var(--muted);display:inline-block;transition:color .25s,transform .25s,opacity .25s}
.footer-links a:hover{color:var(--primary-text);transform:translateX(4px)}
.footer-contact{list-style:none;margin:0;padding:0;display:grid;gap:12px;color:var(--muted)}
.footer-contact li{display:flex;gap:10px}
.footer-contact .ic{width:18px;height:18px;margin-top:4px;color:var(--primary-text)}
.footer-contact a{color:var(--muted)}
.footer-contact a:hover{color:var(--primary-text)}
.socials{display:flex;gap:8px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:48px;padding-top:20px;border-top:1px solid var(--border);color:var(--muted);font-size:14px}
.footer-bottom p{margin:0}
.to-top{color:var(--muted)}
.to-top:hover{color:var(--primary-text)}

/* ==========================================================================
   Animations — text fade-in, word reveal, scroll reveal, hover effects
   ========================================================================== */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px);filter:blur(6px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes wordIn{from{opacity:0;transform:translateY(.6em) rotate(2deg);filter:blur(8px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes shimmer{to{background-position:200% center}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes breathe{0%,100%{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.05)}}
.cta-glow{animation-name:pulseGlow}
@keyframes pulseGlow{0%,100%{transform:scale(1);opacity:.9}50%{transform:scale(1.12);opacity:.6}}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes grow{from{width:0}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,197,94,.5)}70%{box-shadow:0 0 0 10px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}

.hero-title .w{animation:wordIn .8s cubic-bezier(.2,.8,.2,1) both}
.anim-fade,.anim-text{animation:fadeUp .9s cubic-bezier(.2,.8,.2,1) both}
.page-sub.anim-fade{animation-delay:.15s}
.shimmer{animation:shimmer 6s linear infinite}
.hero-title .shimmer .w{animation:wordIn .8s cubic-bezier(.2,.8,.2,1) both,shimmer 6s linear infinite}
.d1{animation-delay:.05s!important}.d2{animation-delay:.12s!important}.d3{animation-delay:.19s!important}.d4{animation-delay:.26s!important}
.d5{animation-delay:.33s!important}.d6{animation-delay:.40s!important}.d7{animation-delay:.48s!important}.d8{animation-delay:.56s!important}
.d9{animation-delay:.64s!important}.d10{animation-delay:.72s!important}.d11{animation-delay:.8s!important}.d12{animation-delay:.88s!important}

/* scroll reveal (only when JS is on, so content never stays hidden) */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1),box-shadow .35s ease,border-color .35s ease}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.in:hover{transition:opacity .8s,transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s ease,border-color .35s ease}
.js .ccard.reveal.in:hover,.js .ncard.reveal.in:hover,.js .tool.reveal.in:hover,.js .path.reveal.in:hover,.js .contact-card.reveal.in:hover{transform:translateY(-6px)}
.js .choice.reveal.in:hover{transform:translateX(6px)}
.js .tool.is-soon.reveal.in:hover{transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-list a{padding:8px 10px;font-size:14.5px}
  .nav-list a:hover::after,.nav-list a.active::after{left:10px;right:10px}
  .header-row{gap:12px}
}
@media (max-width:1080px){
  .tool-grid,.path-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid,.card-grid-3,.news-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{height:420px;max-width:560px;width:100%;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .detail{grid-template-columns:1fr}
  .detail-side{position:static}
}
@media (max-width:900px){
  .header-cta{display:none}
  .menu-btn{display:inline-grid}
  .main-nav{position:fixed;left:0;right:0;top:var(--header-h);bottom:0;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:16px;padding:20px;background:var(--bg);border-top:1px solid var(--border);transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease,visibility .25s}
  .menu-open .main-nav{opacity:1;transform:none;visibility:visible}
  /* backdrop-filter would trap the fixed menu inside the header box */
  .menu-open .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg)}
  body.menu-open{overflow:hidden}
  .nav-list{flex-direction:column}
  .nav-list a{padding:14px 16px;font-size:18px;border-radius:14px}
  .nav-list a.active{background:var(--primary-soft)}
  .nav-list a::after{display:none}
  .nav-cta{display:inline-flex;height:52px}
  .catalog{grid-template-columns:1fr}
  .filters{position:static}
  .js .filters-box:not([open]){padding-bottom:6px}
  .contact-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px}
}
@media (max-width:640px){
  .container{padding-inline:16px}
  .section{padding:56px 0}
  .hero{padding-top:32px}
  .hero-visual{display:none}
  .hero-visual.has-photo{display:block;height:340px;margin-top:8px}
  .has-photo .glass,.has-photo .ring{display:none}
  .stats{grid-template-columns:repeat(2,1fr);row-gap:18px}
  .stats>div:nth-child(2){border-right:0}
  .tool-grid,.path-grid,.card-grid,.card-grid-3,.news-grid{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .lang-btn span{display:none}
  .lang-btn{width:42px;padding:0;justify-content:center}
  .hero-search .btn{padding:0 16px}
  .choice{padding:18px;gap:14px}
  .choice-no{width:54px;height:54px;font-size:17px}
  .brand-text{font-size:18px}
}