:root{
  --navy:#0B3C82;--blue:#1B5CC8;--sky:#2A7FE8;--sky-2:#3FA0F5;
  --grad:linear-gradient(135deg,#1B5CC8 0%,#2A7FE8 55%,#3FA0F5 100%);
  --grad-soft:linear-gradient(135deg,#EAF3FF 0%,#F6FAFF 55%,#FFFFFF 100%);
  --gold:#FDCE4C;--gold-soft:#FFE28A;--gold-pale:#FFFBE8;--green:#28A745;--danger:#DC3545;
  --font:'Roboto','Helvetica Neue',Arial,system-ui,sans-serif;
  --page:#FFFFFF;--band:#F5F9FF;--surface:#FFFFFF;--surface-2:#F4F8FE;--line:#E3EAF4;--line-strong:#CFDDF0;
  --ink:#2D3E5C;--ink-strong:#1A2B4A;--ink-soft:#6B7C99;--heading:#0B3C82;--link:#1B5CC8;
  --pale:#E8F1FE;--manual:#F1F3F6;--manual-ink:#8A9BB5;--key:#FFF6D6;--key-ink:#8A6100;--mark:#FFF1B8;
  --shadow-1:0 1px 2px rgba(27,92,200,.05),0 6px 18px rgba(27,92,200,.07);
  --shadow-2:0 18px 40px -18px rgba(27,92,200,.35);
  --header:#FFFFFF;
  box-sizing:border-box;padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --page:#0C1729;--band:#0F1D35;--surface:#15254A;--surface-2:#122142;--line:#233B66;--line-strong:#2E4B7E;--header:#0F1D35;
  --ink:#C9D6EC;--ink-strong:#EEF3FB;--ink-soft:#93A6C6;--heading:#E8F0FD;--link:#8DB6FF;--pale:#1E3564;--manual:#1A2A4A;--manual-ink:#7F92B3;--key:#3D3413;--key-ink:#FFE28A;--mark:#5A4A12;
  --grad-soft:linear-gradient(135deg,#10234A 0%,#0F1D35 60%,#0C1729 100%);
  --shadow-1:0 1px 2px rgba(0,0,0,.25);--shadow-2:0 18px 40px -18px rgba(0,0,0,.6);}}
:root[data-theme="dark"]{
  --page:#0C1729;--band:#0F1D35;--surface:#15254A;--surface-2:#122142;--line:#233B66;--line-strong:#2E4B7E;--header:#0F1D35;
  --ink:#C9D6EC;--ink-strong:#EEF3FB;--ink-soft:#93A6C6;--heading:#E8F0FD;--link:#8DB6FF;--pale:#1E3564;--manual:#1A2A4A;--manual-ink:#7F92B3;--key:#3D3413;--key-ink:#FFE28A;--mark:#5A4A12;
  --grad-soft:linear-gradient(135deg,#10234A 0%,#0F1D35 60%,#0C1729 100%);
  --shadow-1:0 1px 2px rgba(0,0,0,.25);--shadow-2:0 18px 40px -18px rgba(0,0,0,.6);}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 84px)}
body{margin:0;background:var(--page);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font);color:var(--heading);margin:0;line-height:1.25}
button,input{font:inherit;color:inherit}
a{color:var(--link)}
img{max-width:100%}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
.wrap{max-width:min(1480px,94vw);margin:0 auto;padding:0 32px}
.ico{width:1em;height:1em;flex-shrink:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
[hidden]{display:none!important}
.lg-dark{display:none!important}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .lg-light{display:none!important}:root:not([data-theme="light"]) .lg-dark{display:block!important}}
:root[data-theme="dark"] .lg-light{display:none!important}:root[data-theme="dark"] .lg-dark{display:block!important}

/* Header */
.top{position:sticky;top:0;z-index:40;padding-top:env(safe-area-inset-top,0px);background:color-mix(in srgb,var(--header) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:40px;height:72px}
.logo img{height:40px;width:auto;display:block}
.nav{display:flex;gap:4px}
.nav a{position:relative;white-space:nowrap;color:var(--ink);text-decoration:none;font-weight:500;font-size:15px;padding:24px 12px}
.nav a:hover{color:var(--link)}
.nav a[aria-current]{color:var(--link);font-weight:700}
.nav a[aria-current]::after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--grad)}
.login{margin-left:auto;display:flex;align-items:center;gap:8px;background:var(--grad);color:#fff;border:0;font-weight:700;font-size:14.5px;padding:11px 22px;border-radius:999px;cursor:pointer;white-space:nowrap;text-decoration:none;box-shadow:0 8px 18px -8px rgba(27,92,200,.7)}
.login:hover{filter:brightness(1.06)}
.login .ico{font-size:17px}
.menu-btn{display:none;background:var(--surface-2);border:1px solid var(--line);width:42px;height:42px;border-radius:10px;color:var(--heading);cursor:pointer}
.menu-btn .ico{font-size:22px}
@media (max-width:1060px){.nav{display:none}.menu-btn{display:grid;place-items:center}}
.nav.open{display:flex;position:absolute;top:calc(72px + env(safe-area-inset-top,0px));left:0;right:0;flex-direction:column;background:var(--header);padding:6px 20px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-1)}
.nav.open a{padding:12px}.nav.open a[aria-current]::after{display:none}


/* Mega menu */
.dd{position:relative;display:flex}
.dd > a{display:inline-flex;align-items:center;gap:4px}
.dd-c{font-size:14px;transition:transform .2s}
.dd:hover .dd-c,.dd:focus-within .dd-c{transform:rotate(180deg)}
.mega{position:absolute;left:-40px;top:100%;width:min(940px,calc(100vw - 48px));background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 50px -20px rgba(11,60,130,.35);padding:18px;display:grid;grid-template-columns:230px minmax(0,1fr);gap:18px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .18s,transform .18s,visibility .18s;z-index:50}
.dd:hover .mega,.dd:focus-within .mega{opacity:1;visibility:visible;transform:none}
.mega::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.mg-sys{background:var(--grad-soft);border:1px solid var(--line);border-radius:14px;padding:10px}
.mg-sys h5,.mg-cols h5{margin:4px 8px 8px;font-size:13px;font-weight:700;color:var(--ink-soft);letter-spacing:.3px}
.mg-s{display:flex;align-items:center;gap:10px;padding:8px;border-radius:10px;text-decoration:none;color:var(--ink)!important;font-size:14px!important;font-weight:500!important}
.mg-s:hover{background:var(--surface)}
.mg-s img,.mg-s .gi{width:30px;height:30px;border-radius:50%;flex-shrink:0}
.mg-s .gi{display:grid;place-items:center;color:#fff;font-size:15px}
.mg-s small{display:block;font-size:12px;color:var(--ink-soft);font-weight:400}
.mg-s.soon{opacity:.75}
.mg-cols{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.mg-col a{display:block;padding:5px 8px;border-radius:8px;font-size:13.5px!important;font-weight:400!important;color:var(--ink)!important;text-decoration:none;line-height:1.35}
.mg-col a:hover{background:var(--surface-2);color:var(--link)!important}
.mg-col .mh{display:flex;align-items:center;gap:8px;font-weight:700!important;color:var(--heading)!important;font-size:14px!important;margin-bottom:4px}
.mg-col .mh .ico{font-size:16px;color:var(--sky)}
.mg-foot{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);padding:12px 8px 0;font-size:13.5px;color:var(--ink-soft)}
.mg-foot a{font-weight:700!important;color:var(--link)!important;font-size:13.5px!important;text-decoration:none}
.nav a.mg-s::after,.nav .mega a::after{display:none!important}
.nav .mega a{padding:5px 8px;white-space:normal}
.nav .mega a.mg-s{padding:8px}
@media (max-width:1060px){.mega{display:none!important}.dd-c{display:none}}

/* Hero */
.hero{position:relative;background:var(--grad-soft);overflow:hidden}
.hero::before{content:"";position:absolute;width:520px;height:520px;right:-120px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(63,160,245,.22),transparent 65%);pointer-events:none}
.hero::after{content:"";position:absolute;width:420px;height:420px;left:-160px;bottom:-220px;border-radius:50%;background:radial-gradient(circle,rgba(253,206,76,.18),transparent 65%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:24px;align-items:center;padding-top:40px;padding-bottom:40px;z-index:1}
.hello{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--link);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px 14px 4px 6px;margin-bottom:14px;box-shadow:var(--shadow-1)}
.hello i{width:22px;height:22px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-style:normal;font-size:12px}
.hero h1{font-size:min(40px,3.05vw);font-weight:700;letter-spacing:-.6px;white-space:nowrap;margin-bottom:24px;color:var(--heading)}
.hero .sub{margin:0 0 24px;color:var(--ink-soft);font-size:16px}
.search{position:relative;max-width:640px}
.search-box{display:flex;align-items:center;gap:10px;background:var(--surface);border-radius:999px;padding:6px 6px 6px 22px;box-shadow:var(--shadow-2);border:1.5px solid var(--line)}
.search-box:focus-within{border-color:var(--sky)}
.search-box .ico{font-size:21px;color:#8A9BB5}
.search-box input{flex:1;min-width:0;border:0;background:transparent;font-size:16px;color:var(--ink-strong);padding:12px 2px}
.search-box input::placeholder{color:#8A9BB5}
.search-box input:focus{outline:none}
.search-box input::-webkit-search-cancel-button{display:none}
.btn-search{background:var(--grad);color:#fff;border:0;border-radius:999px;font-weight:700;font-size:15px;padding:12px 28px;box-shadow:0 6px 14px -6px rgba(27,92,200,.7);cursor:pointer;white-space:nowrap}
.btn-search:hover{filter:brightness(1.06)}
.hint{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--ink-soft)}
.hint button{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 14px;cursor:pointer;font-size:13.5px;color:var(--ink)}
.hint button:hover{border-color:var(--sky);color:var(--link)}
.art{position:relative}
.art > svg{width:100%;height:auto;display:block;max-height:380px}
@media (max-width:900px){.hero .wrap{grid-template-columns:minmax(0,1fr);padding-top:32px}.hero h1{font-size:5.2vw}.art{max-width:420px;margin:0 auto;order:-1}.art > svg{max-height:240px}}
@media (max-width:600px){.hero h1{font-size:5.4vw;letter-spacing:-.3px}.btn-search{padding:11px 16px}.art{display:none}}

.suggest{position:absolute;left:0;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-2);text-align:left;overflow:hidden;display:none;z-index:20}
.suggest.on{display:block}
.sg-head{display:flex;justify-content:space-between;padding:10px 16px;font-size:12.5px;color:var(--ink-soft);border-bottom:1px solid var(--line)}
.sg-list{max-height:380px;overflow:auto;padding:6px}
.sg{display:flex;gap:12px;align-items:center;width:100%;text-align:left;border-radius:10px;padding:9px 10px;text-decoration:none}
.sg[aria-selected="true"],.sg:hover{background:var(--pale)}
.sg .ri,.res .ri{width:34px;height:34px;border-radius:50%;background:var(--pale);color:var(--link);display:grid;place-items:center;font-size:17px;flex-shrink:0}
.sg .tx{flex:1;min-width:0}
.sg b{display:block;color:var(--ink-strong);font-weight:500;font-size:14.5px}
.sg small{display:block;font-size:12.5px;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sg mark,.res mark{background:var(--mark);color:inherit;border-radius:3px;padding:0 1px}
.sg-empty{padding:18px 16px;color:var(--ink-soft);font-size:14px}


/* Hero composition */
.hc{position:relative;max-width:470px;margin-left:auto;padding:34px 30px 40px}
.hc::before{content:"";position:absolute;inset:8% 4% 4% 10%;border-radius:40px;background:var(--grad);opacity:.14;transform:rotate(-4deg)}
.hc-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 60px -28px rgba(11,60,130,.45);overflow:hidden}
.hc-h{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--grad);color:#fff}
.hc-av{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center;font-size:20px}
.hc-h b{display:block;font-size:15px}
.hc-h small{display:flex;align-items:center;gap:6px;font-size:12px;color:#EAF3FF}
.hc-h small i{width:8px;height:8px;border-radius:50%;background:#5BE38A}
.hc-b{padding:16px;display:flex;flex-direction:column;gap:10px}
.bb{max-width:86%;background:var(--surface-2);border:1px solid var(--line);border-radius:16px 16px 16px 4px;padding:10px 13px;font-size:13.5px;line-height:1.45;color:var(--ink)}
.bb.me{align-self:flex-end;background:var(--grad);color:#fff;border:0;border-radius:16px 16px 4px 16px}
.hc-lesson{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:14px;padding:10px 12px;max-width:86%;font-size:13px}
.hc-lesson .li{width:34px;height:34px;border-radius:50%;background:var(--pale);color:var(--link);display:grid;place-items:center;font-size:17px}
.hc-lesson b{display:block;color:var(--ink-strong);font-weight:500}
.hc-lesson small{color:var(--ink-soft)}
.hc-lesson > .ico{margin-left:auto;color:var(--ink-soft)}
.typing{display:flex;gap:4px;padding:8px 12px;background:var(--surface-2);border-radius:14px;width:max-content}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--sky);animation:tp 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes tp{0%,60%,100%{opacity:.3;transform:none}30%{opacity:1;transform:translateY(-3px)}}
.hc-f{position:absolute;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:10px 14px;box-shadow:0 18px 36px -18px rgba(11,60,130,.45);font-size:13px;white-space:nowrap}
.hc-f b{display:block;color:var(--ink-strong);font-size:14px}
.hc-f small{display:block;color:var(--ink-soft);font-size:12px}
.fi{flex-shrink:0;width:36px;height:36px;border-radius:11px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:17px}
.fi.y{background:linear-gradient(135deg,#FDCE4C,#FFE28A);color:#0B3C82}
.fi.g{background:linear-gradient(135deg,#28A745,#5BCB78)}
.f1{right:-6px;top:0}
.f2{left:-18px;bottom:-10px}
.f3{right:-14px;bottom:-4px}
@media (max-width:1100px){.f3{display:none}}

/* Systems */
.sys-sec{padding-top:28px}
.sec-t{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:14px;flex-wrap:wrap}
.sec-t h2{font-size:22px;font-weight:700}
.systems{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px}
@media (max-width:1140px){.systems{grid-template-columns:repeat(4,minmax(0,1fr))}}
.sys{flex-direction:column!important;align-items:center!important;text-align:center!important;gap:10px;padding:18px 12px 16px!important}
.sys .tx{flex:none!important;width:100%}
.sys .chev{position:absolute;right:12px;top:18px}
.sys b{font-size:15px!important}
@media (max-width:600px){.systems{grid-template-columns:1fr 1fr;gap:8px}.guide{padding-top:28px}}
.sys{position:relative;display:flex;align-items:center;gap:12px;text-align:left;background:var(--surface);border:1.5px solid var(--line);border-radius:16px;padding:16px;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .15s}
.sys:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.sys[aria-pressed="true"]{border-color:var(--sky);background:linear-gradient(180deg,var(--pale),var(--surface));box-shadow:0 0 0 3px rgba(42,127,232,.15)}
.sys img,.sys .gi{width:46px;height:46px;flex-shrink:0}
.sys .gi{border-radius:50%;display:grid;place-items:center;font-size:22px;color:#fff}
.sys .tx{flex:1;min-width:0}
.sys b{display:block;font-size:16px;font-weight:700;color:var(--ink-strong)}
.sys small{display:block;font-size:13px;color:var(--ink-soft);line-height:1.35}
.sys .chev{font-size:16px;color:var(--ink-soft)}
.sys[aria-pressed="true"] .chev{color:var(--sky)}
@media (max-width:600px){.sys{padding:12px;gap:10px}.sys img,.sys .gi{width:38px;height:38px}.sys .chev{display:none}}

.results{display:none;margin-top:28px}
.results.on{display:block}
.res-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.res-head h2{font-size:19px;font-weight:700}
.res-head button{background:none;border:0;color:var(--link);cursor:pointer;font-size:14px;font-weight:500}
.res-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px}
.res{display:flex;gap:12px;align-items:flex-start;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;text-decoration:none}
.res:hover{border-color:var(--sky)}
.res b{display:block;color:var(--ink-strong);font-weight:500}
.res span{font-size:12.5px;color:var(--ink-soft)}

/* Guide */
.guide{padding-top:40px;padding-bottom:48px}
.guide-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.guide-head h2{font-size:22px;font-weight:700}
.guide-head p{margin:2px 0 0;color:var(--ink-soft);font-size:14.5px}
.pills{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.pill-btn{display:inline-flex;align-items:center;gap:7px;border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 18px;font-weight:500;font-size:14.5px;color:var(--ink);white-space:nowrap;text-decoration:none}
.pill-btn .ico{font-size:16px;color:var(--ink-soft)}
.pill-btn:hover{border-color:var(--sky);color:var(--link)}
.pill-btn[aria-selected="true"]{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 8px 16px -8px rgba(27,92,200,.7)}
.pill-btn[aria-selected="true"] .ico{color:#fff}
.pill-btn .n{font-size:12px;opacity:.7}
@media (max-width:600px){.pills{flex-wrap:nowrap;overflow-x:auto;margin:0 -16px 16px;padding:0 16px 4px}}

.index{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
@media (max-width:1100px){.index{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:760px){.index{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.index{grid-template-columns:1fr}}
.ix{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px 16px 12px;box-shadow:var(--shadow-1);display:flex;flex-direction:column}
.ix-h{display:flex;align-items:center;gap:12px;margin-bottom:12px;text-decoration:none}
.ix-h .av{width:44px;height:44px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:21px;flex-shrink:0}
.ix-h b{display:block;font-size:16px;line-height:1.3;color:var(--heading);font-weight:700}
.ix-h small{display:block;font-size:12.5px;color:var(--ink-soft)}
.ix ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.ix li a{display:flex;align-items:center;gap:10px;padding:8px 2px;text-decoration:none;color:var(--ink);font-size:14px;border-bottom:1px dashed var(--line)}
.ix li:last-child a{border-bottom:0}
.ix li a:hover{color:var(--link)}
.ix .dot{width:8px;height:8px;border-radius:50%;background:var(--green);flex-shrink:0}
.ix .dot.m{background:transparent;border:1.5px solid var(--manual-ink)}
.ix .dot.k{background:var(--gold)}
.ix .more{margin-top:auto;padding-top:10px;font-size:13.5px;font-weight:700;color:var(--link);text-decoration:none;display:flex;align-items:center;gap:4px}

.flow{background:var(--band);border:1px solid var(--line);border-radius:22px;padding:22px;position:relative;overflow:hidden}
.flow::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad)}
.flow-head{display:flex;gap:14px;align-items:center;margin-bottom:18px;flex-wrap:wrap}
.flow-head .av{width:52px;height:52px;border-radius:16px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:25px;flex-shrink:0;box-shadow:0 10px 18px -10px rgba(27,92,200,.8)}
.flow-head h3{font-size:20px;font-weight:700}
.flow-head p{margin:2px 0 0;color:var(--ink-soft);font-size:14px}
.flow-head .cnt{margin-left:auto;display:flex;gap:8px}
.chip{font-size:12.5px;font-weight:500;background:var(--surface);border:1px solid var(--line);color:var(--ink-soft);border-radius:999px;padding:3px 10px}
.chapters{display:flex;gap:8px;align-items:stretch}
.chapter{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 12px 16px;flex:var(--n) 1 0;min-width:0;box-shadow:0 1px 2px rgba(27,92,200,.04)}
.ch-h{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding:0 4px}
.num{width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;font-weight:700;display:grid;place-items:center;font-size:15px;flex-shrink:0}
.ch-h b{display:block;font-size:15px;color:var(--heading);font-weight:700;line-height:1.3}
.steps{display:flex;align-items:flex-start;justify-content:space-around;gap:2px}
.arrow{color:var(--sky);opacity:.55;font-size:15px;margin-top:24px;flex-shrink:0}
.join{align-self:center;color:var(--sky);font-size:18px;flex-shrink:0;margin:0 -2px}
.step{position:relative;flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:4px 2px 6px;border-radius:12px;text-decoration:none;color:inherit}
.step .c{position:relative;width:58px;height:58px;border-radius:50%;background:linear-gradient(145deg,#EEF5FF,#D9E9FF);color:var(--blue);display:grid;place-items:center;font-size:26px;transition:transform .15s,box-shadow .15s}
:root[data-theme="dark"] .step .c{background:var(--pale);color:var(--link)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .step .c{background:var(--pale);color:var(--link)}}
.step:hover .c{transform:translateY(-3px);box-shadow:0 10px 18px -8px rgba(27,92,200,.55)}
.step .c::after{content:"";position:absolute;right:1px;top:1px;width:12px;height:12px;border-radius:50%;background:var(--green);border:2px solid var(--surface)}
.step b{font-size:14px;font-weight:500;color:var(--ink-strong);line-height:1.3}
.step small{font-size:12px;color:var(--ink-soft);line-height:1.35}
.step.manual .c{background:var(--manual)!important;color:var(--manual-ink)!important;outline:1.5px dashed var(--line-strong);outline-offset:-1.5px}
.step.manual .c::after{background:var(--surface);border-color:var(--manual-ink)}
.step.manual b{color:var(--ink-soft)}
.step.key .c{background:linear-gradient(145deg,#FFF8DD,#FFE9A6)!important;color:var(--key-ink)!important}
.step .soon{font-size:10.5px;font-weight:700;color:var(--key-ink);background:var(--key);border-radius:999px;padding:1px 8px}
@media (max-width:1100px) and (min-width:821px){.chapters{overflow-x:auto;padding-bottom:6px}.chapter{min-width:calc(var(--n) * 112px)}}
@media (max-width:820px){.chapters{flex-direction:column}.join{transform:rotate(90deg)}}
@media (max-width:600px){.flow{padding:14px}.flow-head .cnt{display:none}.steps{flex-wrap:wrap;justify-content:flex-start;row-gap:14px}.steps .arrow{display:none}.step{flex:0 0 calc(50% - 2px)}}
.legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:var(--ink-soft)}
.legend span{display:flex;align-items:center;gap:7px}
.legend i{width:14px;height:14px;border-radius:50%;background:#E3EEFF;box-shadow:inset 0 0 0 1.5px var(--sky)}
.legend i.m{background:var(--manual);box-shadow:none;outline:1.5px dashed var(--manual-ink);outline-offset:-1.5px}
.legend i.k{background:#FFEFB8;box-shadow:inset 0 0 0 1.5px var(--gold)}
.legend i.d{width:10px;height:10px;background:var(--green);box-shadow:none}
.legend .tip{margin-left:auto}
.empty{background:var(--band);border:1px dashed var(--line-strong);border-radius:22px;padding:44px 24px;text-align:center}
.empty h3{font-size:20px;margin-bottom:6px}
.empty p{margin:0 auto 18px;color:var(--ink-soft);max-width:48ch}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:12px;font-weight:700;font-size:15px;padding:12px 22px;cursor:pointer;text-decoration:none}
.btn-blue{background:var(--grad);color:#fff}
.btn-line{background:var(--surface);color:var(--link);border:1.5px solid var(--line-strong);font-weight:500}

/* Lesson */
.lesson{padding-top:26px;padding-bottom:56px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13.5px;color:var(--ink-soft);margin-bottom:20px}
.crumbs a{color:var(--ink-soft);text-decoration:none}
.crumbs a:hover{color:var(--link)}
.crumbs .ico{font-size:12px;opacity:.6}
.crumbs span:last-child{color:var(--ink-strong);font-weight:500}
.l-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:40px;align-items:start}
@media (max-width:960px){.l-grid{grid-template-columns:1fr}.toc{position:static!important;order:2}}
.toc{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow-1)}
.toc-h{display:flex;align-items:center;gap:10px;padding:2px 4px 12px;border-bottom:1px solid var(--line);margin-bottom:10px}
.toc-h .av{width:36px;height:36px;border-radius:11px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:18px}
.toc-h b{font-size:15px;color:var(--heading)}
.toc-h small{display:block;font-size:12px;color:var(--ink-soft)}
.toc h4{font-size:12.5px;color:var(--ink-soft);font-weight:500;margin:12px 6px 6px}
.toc a{display:flex;gap:10px;align-items:center;padding:7px 8px;border-radius:9px;text-decoration:none;color:var(--ink);font-size:14px;line-height:1.35}
.toc a:hover{background:var(--surface-2)}
.toc a[aria-current]{background:var(--pale);color:var(--link);font-weight:500}
.toc a .dot{width:8px;height:8px;border-radius:50%;background:var(--green);flex-shrink:0}
.toc a .dot.m{background:transparent;border:1.5px solid var(--manual-ink)}
.art-h{display:flex;gap:16px;align-items:flex-start;margin-bottom:22px}
.art-h .c{width:64px;height:64px;border-radius:50%;background:linear-gradient(145deg,#EEF5FF,#D9E9FF);color:var(--blue);display:grid;place-items:center;font-size:30px;flex-shrink:0}
.art-h .c.manual{background:var(--manual);color:var(--manual-ink)}
.art-h .c.key{background:linear-gradient(145deg,#FFF8DD,#FFE9A6);color:var(--key-ink)}
.art-h .eyebrow{font-size:13.5px;color:var(--ink-soft);margin-bottom:4px}
.art-h h1{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.4px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:500;border-radius:999px;padding:3px 11px;background:var(--surface-2);border:1px solid var(--line);color:var(--ink-soft)}
.tag.ok{background:#E8F5E9;border-color:#CDEBD3;color:#1E7E34}
.tag.m{background:var(--manual);color:var(--manual-ink)}
.tag.k{background:var(--key);border-color:transparent;color:var(--key-ink)}
.lead{font-size:16px;color:var(--ink);max-width:70ch;margin:0 0 22px}
.part-h{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;margin:6px 0 14px}
.part-h::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--grad)}
.art-h{align-items:center!important}
.video{position:relative;aspect-ratio:16/9;max-width:none;width:100%;border-radius:16px;background:var(--grad);display:grid;place-items:center;color:#fff;margin-bottom:30px;overflow:hidden}
.video .play{width:66px;height:66px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center;font-size:28px;border:2px solid rgba(255,255,255,.6)}
.video .cap{position:absolute;left:18px;bottom:14px;font-size:13.5px;color:#EAF3FF}
.sec{display:grid;grid-template-columns:14px minmax(0,1fr);gap:14px;padding-bottom:28px;position:relative}
.sec:not(:last-child)::before{content:"";position:absolute;left:6px;top:26px;bottom:4px;width:2px;background:var(--line)}
.sec .n{width:14px;height:14px;border-radius:50%;background:var(--grad);margin-top:10px;box-shadow:0 0 0 4px var(--pale)}
.sec h3{font-size:18px;font-weight:700;margin:4px 0 6px}
.sec p{margin:0 0 12px;max-width:70ch}
.shot{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface);max-width:760px}
.shot .bar{display:flex;gap:6px;padding:9px 12px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.shot .bar i{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}
.shot .body{aspect-ratio:16/6;display:grid;place-items:center;color:var(--ink-soft);font-size:13.5px;background:repeating-linear-gradient(135deg,var(--surface) 0 14px,var(--surface-2) 14px 28px)}
.shot .body span{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);padding:6px 14px;border-radius:999px}
.callout{border-left:4px solid var(--gold);background:var(--gold-pale);color:#2D3E5C;border-radius:0 12px 12px 0;padding:14px 18px;margin:4px 0 28px;max-width:760px}
:root[data-theme="dark"] .callout{background:var(--key);color:var(--ink)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .callout{background:var(--key);color:var(--ink)}}
.callout b{display:block;color:#0B3C82;margin-bottom:2px}
.soonbox{background:var(--key);border-radius:14px;padding:16px 18px;margin-bottom:24px;color:var(--key-ink);max-width:760px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px;max-width:760px}
.pager a{display:flex;flex-direction:column;gap:2px;border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;background:var(--surface)}
.pager a:hover{border-color:var(--sky)}
.pager small{color:var(--ink-soft);font-size:12.5px}
.pager b{color:var(--ink-strong);font-weight:500}
.pager .nx{text-align:right;grid-column:2}
.fb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft);max-width:760px}
.fb button{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 14px;cursor:pointer}
.fb button:hover{border-color:var(--sky)}

/* Home landing */
.hs{padding-top:44px}
.hs-t{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.hs-t h2{font-size:24px;font-weight:700;letter-spacing:-.3px}
.hs-t p{margin:4px 0 0;color:var(--ink-soft)}
.hs-t > a,.more-link{display:inline-flex;align-items:center;gap:4px;font-weight:700;font-size:14.5px;color:var(--link);text-decoration:none}
.roles{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
@media (max-width:1100px){.roles{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:640px){.roles{grid-template-columns:1fr 1fr}}
.role{display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s,box-shadow .15s}
.role:hover{border-color:var(--sky);transform:translateY(-3px);box-shadow:var(--shadow-1)}
.role .ri{width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:22px;margin-bottom:6px;box-shadow:0 10px 18px -10px rgba(27,92,200,.8)}
.role:first-child .ri{background:linear-gradient(135deg,#FDCE4C,#FFE28A);color:#0B3C82;box-shadow:0 10px 18px -10px rgba(253,206,76,.9)}
.role b{font-size:16px;color:var(--ink-strong)}
.role p{margin:0;font-size:13.5px;color:var(--ink-soft);flex:1}
.role .go,.ob .go{display:inline-flex;align-items:center;gap:4px;font-size:13.5px;font-weight:700;color:var(--link);margin-top:6px}
.hs-band{margin-top:48px;padding:40px 0 44px;background:var(--grad-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.onb{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:860px){.onb{grid-template-columns:1fr}}
.ob{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;text-decoration:none;color:inherit;box-shadow:var(--shadow-1);transition:transform .15s}
.ob:hover{transform:translateY(-3px)}
.thumb{position:relative;aspect-ratio:16/8;background:var(--grad);display:grid;place-items:center;color:#fff}
.thumb .ti{width:64px;height:64px;border-radius:20px;background:rgba(255,255,255,.18);border:1.5px solid rgba(255,255,255,.45);display:grid;place-items:center;font-size:30px}
.thumb .tn{position:absolute;left:14px;top:12px;font-size:12.5px;font-weight:700;background:var(--gold);color:#0B3C82;border-radius:999px;padding:3px 10px}
.thumb .tv{position:absolute;right:12px;bottom:10px;display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:700;background:rgba(8,45,99,.45);border-radius:999px;padding:3px 10px}
.ob-b{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.ob-b b{font-size:16.5px;color:var(--heading)}
.ob-b p{margin:6px 0 0;font-size:14px;color:var(--ink-soft);flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pop{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media (max-width:900px){.pop{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.pop{grid-template-columns:1fr}}
.pp{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;text-decoration:none;color:inherit}
.pp:hover{border-color:var(--sky)}
.pp .pi{width:44px;height:44px;border-radius:50%;background:linear-gradient(145deg,#EEF5FF,#D9E9FF);color:var(--blue);display:grid;place-items:center;font-size:21px;flex-shrink:0}
.pp .pi.k{background:linear-gradient(145deg,#FFF8DD,#FFE9A6);color:#8A6100}
.pp .pt{flex:1;min-width:0}
.pp b{display:block;color:var(--ink-strong);font-weight:500}
.pp small{color:var(--ink-soft);font-size:12.5px}
.pp .chev{color:var(--ink-soft)}
.hs-2col{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;align-items:start;padding-bottom:44px}
@media (max-width:960px){.hs-2col{grid-template-columns:1fr}}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:10px}
.faq details[open]{border-color:var(--sky);box-shadow:var(--shadow-1)}
.faq summary{list-style:none;cursor:pointer;padding:15px 18px;font-weight:500;color:var(--ink-strong);display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.pm{width:22px;height:22px;border-radius:50%;background:var(--pale);position:relative;flex-shrink:0}
.pm::before,.pm::after{content:"";position:absolute;left:6px;right:6px;top:10px;height:2px;border-radius:2px;background:var(--link)}
.pm::after{transform:rotate(90deg);transition:transform .2s}
details[open] .pm::after{transform:rotate(0)}
.fa{padding:0 18px 16px}
.fa p{margin:0 0 8px;color:var(--ink)}
.fa a{display:inline-flex;align-items:center;gap:4px;font-size:13.5px;font-weight:700;text-decoration:none}
.soon-side{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow-1)}
.soon-side h3{font-size:17px;font-weight:700;margin-bottom:10px}
.ss{display:flex;gap:12px;align-items:center;padding:10px 6px;border-radius:12px;text-decoration:none;color:inherit}
.ss:hover{background:var(--surface-2)}
.ssi{width:40px;height:40px;border-radius:12px;background:var(--pale);color:var(--link);display:grid;place-items:center;font-size:19px;flex-shrink:0}
.ssi.y{background:var(--key);color:var(--key-ink)}
.ss b{display:block;color:var(--ink-strong);font-weight:500;font-size:14.5px}
.ss small{color:var(--ink-soft);font-size:12.5px}
.ss-note{margin-top:10px;padding-top:12px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft)}
.ss-note a{font-weight:700;text-decoration:none}



.il{width:100%;height:auto;display:block}
.il .il-wave{transform-box:view-box;transform-origin:346px 270px;animation:ilwave 3.2s ease-in-out infinite}
@keyframes ilwave{0%,55%,100%{transform:rotate(0)}10%{transform:rotate(-12deg)}20%{transform:rotate(6deg)}30%{transform:rotate(-10deg)}42%{transform:rotate(3deg)}}
.il .il-body{animation:ilbreath 4.5s ease-in-out infinite}
@keyframes ilbreath{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px)}}
.il .il-eyes{transform-box:fill-box;transform-origin:center;animation:ilblink 5s infinite}
@keyframes ilblink{0%,93%,100%{transform:scaleY(1)}96%{transform:scaleY(.1)}}
.il .il-cloud{animation:ildrift 14s ease-in-out infinite alternate}
.il .il-cloud.c2{animation-duration:18s;animation-direction:alternate-reverse}
@keyframes ildrift{from{transform:translateX(-10px)}to{transform:translateX(22px)}}
.il .il-float{animation:ilfloat 5s ease-in-out infinite}
.il .il-float.f2{animation-delay:-2.5s}
@keyframes ilfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.il .il-win{animation:iltw 3.6s ease-in-out infinite}
.il .il-win.w2{animation-delay:-1.2s}.il .il-win.w3{animation-delay:-2.4s}
@keyframes iltw{0%,100%{opacity:.35}50%{opacity:1}}
.il .il-spark{transform-box:fill-box;transform-origin:center;animation:ilsp 2.8s ease-in-out infinite}
.il .il-spark.s2{animation-delay:-1.4s}
@keyframes ilsp{0%,100%{transform:scale(.7);opacity:.5}50%{transform:scale(1.1);opacity:1}}


/* Auth modal */
.auth{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:16px}
.auth[hidden]{display:none}
.auth-bg{position:absolute;inset:0;background:rgba(8,29,66,.45);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:fade .2s}
@keyframes fade{from{opacity:0}}
.auth-card{position:relative;width:min(920px,100%);max-height:calc(100vh - 32px);overflow:auto;background:var(--surface);border-radius:28px;box-shadow:0 40px 80px -30px rgba(3,20,55,.6);display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);animation:pop .25s ease-out}
.auth-x{position:absolute;right:14px;top:14px;z-index:3;width:36px;height:36px;border-radius:50%;border:0;background:var(--surface-2);color:var(--ink-soft);font-size:22px;cursor:pointer;line-height:1}
.auth-x:hover{background:var(--pale);color:var(--link)}
.auth-side{position:relative;overflow:hidden;background:linear-gradient(160deg,#1B5CC8 0%,#2A7FE8 55%,#6CB6FA 100%);color:#fff;padding:40px 30px 30px;display:flex;flex-direction:column;align-items:center;text-align:center}
.as-clouds{position:absolute;left:0;right:0;bottom:0;width:100%;height:120px}
.auth-side h3{color:#fff;font-size:24px;font-weight:700;line-height:1.3;position:relative}
.as-m{position:relative;width:210px;height:175px;margin:18px 0 10px;filter:drop-shadow(0 18px 24px rgba(3,20,55,.35))}
.as-list{position:relative;list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;width:100%}
.as-list li{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.92);color:#1A2B4A;border-radius:999px;padding:9px 16px 9px 9px;font-size:13.5px;font-weight:500;text-align:left}
.as-list span{width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:15px;flex-shrink:0}
.auth-main{padding:34px 40px 22px;display:flex;flex-direction:column;min-width:0}
.am-top{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:18px}
.am-top img{height:38px}
.am-m{display:none;width:60px;height:50px}
.auth-main h2{font-size:24px;font-weight:700;text-align:center}
.asub{text-align:center;color:var(--ink-soft);margin:6px 0 20px;font-size:14.5px}
.af{margin-bottom:14px}
.af label,.otp-l{display:block;font-weight:500;font-size:14px;color:var(--ink-strong);margin-bottom:6px}
.af em,.otp-l em{color:var(--danger);font-style:normal}
.af-in{position:relative}
.af input{width:100%;border:1.5px solid var(--line-strong);border-radius:14px;padding:12px 14px;font-size:15px;background:var(--surface);color:var(--ink-strong);transition:border-color .15s,box-shadow .15s}
.af input:focus{outline:none;border-color:var(--sky);box-shadow:0 0 0 4px rgba(42,127,232,.15)}
.af-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:0;background:none;color:var(--ink-soft);cursor:pointer;display:grid;place-items:center;font-size:18px;border-radius:8px}
.af-eye.on{color:var(--link)}
.af-h{display:block;font-size:12.5px;color:var(--ink-soft);margin-top:5px}
.af-e{display:block;font-size:12.5px;color:var(--danger);margin-top:5px;min-height:0}
.af.bad input{border-color:var(--danger)}
.af.bad .af-h{display:none}
.a2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.arow{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:-2px 0 18px;flex-wrap:wrap}
.chk{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);cursor:pointer}
.chk input{width:17px;height:17px;accent-color:var(--blue)}
.alink{background:none;border:0;padding:0;color:var(--link);font-weight:700;cursor:pointer;font-size:inherit}
.alink:hover{text-decoration:underline}
.ab{width:100%;border:0;border-radius:999px;background:var(--grad);color:#fff;font-weight:700;font-size:16px;padding:14px;cursor:pointer;box-shadow:0 10px 20px -10px rgba(27,92,200,.8), inset 0 -3px 0 rgba(8,45,99,.25);display:flex;align-items:center;justify-content:center;gap:10px}
.ab:hover{filter:brightness(1.05)}
.ab:disabled{opacity:.8;cursor:progress}
.ab-line{border:1.5px solid var(--line-strong);background:var(--surface);color:var(--ink);border-radius:999px;padding:11px 22px;font-weight:500;cursor:pointer}
.spin{width:16px;height:16px;border-radius:50%;border:2.5px solid rgba(255,255,255,.5);border-top-color:#fff;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.aalt{text-align:center;font-size:14.5px;color:var(--ink-soft);margin:16px 0 0}
.aalt a{font-weight:700;text-decoration:none}
.ainfo{display:flex;align-items:center;gap:10px;margin-top:16px;background:var(--pale);border-radius:14px;padding:12px 14px;font-size:14px;color:var(--ink)}
.ainfo > .ico{font-size:18px;color:var(--link);flex-shrink:0}
.aback{display:inline-flex;align-items:center;gap:4px;background:none;border:0;color:var(--ink-soft);cursor:pointer;font-size:13.5px;padding:0;margin-bottom:10px}
.aback .ico{transform:rotate(180deg)}
.aback:hover{color:var(--link)}
.aerr{background:#FDECEE;color:#B02A37;border-radius:12px;padding:10px 12px;font-size:13.5px;margin:8px 0 12px}
.terms-chk{margin:4px 0 14px}
.pw-meter{display:flex;gap:6px;margin:-4px 0 14px}
.pw-meter i{flex:1;height:5px;border-radius:5px;background:var(--line)}
.pw-meter[data-s="1"] i:nth-child(1){background:#DC3545}
.pw-meter[data-s="2"] i:nth-child(-n+2){background:#FFC107}
.pw-meter[data-s="3"] i{background:#28A745}
.otp{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.otp input{width:100%;aspect-ratio:1/1.1;max-height:56px;text-align:center;font-size:22px;font-weight:700;border:1.5px solid var(--line-strong);border-radius:12px;background:var(--surface);color:var(--ink-strong)}
.otp input:focus{outline:none;border-color:var(--sky);box-shadow:0 0 0 4px rgba(42,127,232,.15)}
.otp.bad input{border-color:var(--danger)}
.otp-e{margin-bottom:6px}
.resend{font-size:13.5px;color:var(--ink-soft);margin:8px 0 16px}
.adone{position:relative;text-align:center;padding-top:6px}
.ad-m{width:150px;height:125px;margin:0 auto 6px}
.confetti i{position:absolute;top:10px;width:8px;height:12px;border-radius:2px;animation:cf 1.6s ease-out infinite}
.confetti i:nth-child(1){left:24%;background:#FDCE4C}.confetti i:nth-child(2){left:32%;background:#2A7FE8;animation-delay:.2s}.confetti i:nth-child(3){left:44%;background:#28A745;animation-delay:.4s}
.confetti i:nth-child(4){left:58%;background:#FF9EB0;animation-delay:.1s}.confetti i:nth-child(5){left:68%;background:#1B5CC8;animation-delay:.3s}.confetti i:nth-child(6){left:76%;background:#FDCE4C;animation-delay:.5s}
@keyframes cf{0%{transform:translateY(0) rotate(0);opacity:1}100%{transform:translateY(90px) rotate(260deg);opacity:0}}
.adone .ab{margin-top:6px}
.auth-demo{margin:auto 0 0;padding-top:16px;text-align:center;font-size:12px;color:var(--ink-soft)}
.terms{position:absolute;inset:0;z-index:4;background:rgba(8,29,66,.35);display:grid;place-items:center;padding:20px;border-radius:28px}
.terms[hidden]{display:none}
.terms-in{background:var(--surface);border-radius:20px;padding:24px;max-width:520px;box-shadow:var(--shadow-2)}
.terms-in h3{font-size:19px;margin-bottom:8px}
.terms-in p,.terms-in li{font-size:14px;color:var(--ink)}
.terms-in ol{padding-left:20px;margin:8px 0 16px}
.terms-in li{margin:6px 0}
.terms-act{display:flex;justify-content:flex-end;gap:10px}
.terms-act .ab{width:auto;padding:11px 24px;font-size:15px}
@media (max-width:820px){.am-top{padding:0 36px}.am-top img{height:30px}.am-m{width:48px!important;height:40px!important}.auth-card{grid-template-columns:1fr}.auth-side{display:none}.am-m{display:block}.auth-main{padding:28px 20px 18px}.a2{grid-template-columns:1fr}}


.hx{width:100%;height:auto;display:block}
.hx .hx-agent,.hx .hx-girl{animation:hxbob 4.6s ease-in-out infinite}
@keyframes hxbob{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
.hx .hx-eyes{transform-box:fill-box;transform-origin:center;animation:hxblink 5s infinite}
@keyframes hxblink{0%,93%,100%{transform:scaleY(1)}96%{transform:scaleY(.1)}}
.hx .hx-fl{animation:hxfl 5.5s ease-in-out infinite}
.hx .hx-fl.f2{animation-delay:-1.8s}.hx .hx-fl.f3{animation-delay:-3.6s}
@keyframes hxfl{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hx .hx-dot{animation:hxdot 1.4s ease-in-out infinite}
.hx .hx-dot.d2{animation-delay:.18s}.hx .hx-dot.d3{animation-delay:.36s}
@keyframes hxdot{0%,60%,100%{transform:translateY(0);opacity:.6}30%{transform:translateY(-5px);opacity:1}}
.hx .hx-sp{transform-box:fill-box;transform-origin:center;animation:hxsp 2.6s ease-in-out infinite}
.hx .hx-sp.s2{animation-delay:-1.3s}
@keyframes hxsp{0%,100%{transform:scale(.7) rotate(0);opacity:.55}50%{transform:scale(1.1) rotate(20deg);opacity:1}}
.hx .hx-win{animation:hxwin 3.4s ease-in-out infinite}.hx .hx-win.w2{animation-delay:-1.7s}
@keyframes hxwin{0%,100%{opacity:1}50%{opacity:.35}}
.hx .hx-logo{transform-box:fill-box;transform-origin:center;animation:hxlogo 3s ease-in-out infinite}
@keyframes hxlogo{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}
.hx .hx-glint{transform-box:fill-box;transform-origin:center;animation:hxglint 2.4s ease-in-out infinite}
.hx .hx-glint.g2{animation-delay:-1.2s}
@keyframes hxglint{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.75);opacity:.8}}
.hx .hx-bub{animation:hxfl 4s ease-in-out infinite}


/* Lesson text alignment */
.l-grid > article{max-width:1100px;width:100%}
.lesson .lead,.lesson .sec p{max-width:none!important;text-align:justify;text-justify:inter-word;hyphens:auto}
.lesson .shot,.lesson .video,.lesson .callout,.lesson .soonbox,.lesson .pager,.lesson .fb{max-width:none!important}
.lesson .sec > div{min-width:0}

/* ADMIN lesson extras */
@media (min-width:1101px){.index.idx-3{grid-template-columns:repeat(3,minmax(0,1fr))}.index.idx-4{grid-template-columns:repeat(4,minmax(0,1fr))}}
div.lead p{margin:0 0 8px}div.lead ul{margin:0 0 22px;padding-left:20px}div.lead li{margin:4px 0}
.meta-box{display:grid;gap:8px;margin:0 0 26px;padding:14px 18px;background:var(--surface-2);border:1px solid var(--line);border-radius:14px}
.meta-box div{display:grid;grid-template-columns:190px minmax(0,1fr);gap:12px;align-items:baseline}
.meta-box dt{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-soft);font-weight:500}
.meta-box dt .ico{color:var(--sky);font-size:15px}
.meta-box dd{margin:0;font-size:14.5px;color:var(--ink-strong)}
.meta-box dd a{font-weight:500}
@media (max-width:600px){.meta-box div{grid-template-columns:1fr;gap:2px}}
.lesson .sec ul,.lesson .sec ol{margin:0 0 12px;padding-left:20px}
.lesson .sec li{margin:5px 0;text-align:justify}
.shot.real{margin:0 0 14px}
.shot.real img{display:block;width:100%;height:auto}

/* Lễ tân full articles (đồng bộ từ Academy) */
.ax-ph{margin:6px 0 14px;border:1px dashed var(--line-strong);border-radius:14px;overflow:hidden}
.ax-ph .bar{display:flex;gap:6px;padding:9px 12px;background:var(--surface-2)}
.ax-ph .bar i{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}
.ax-ph .body{aspect-ratio:16/5;display:grid;place-items:center;color:var(--ink-soft);font-size:13.5px;background:repeating-linear-gradient(135deg,var(--surface) 0 14px,var(--surface-2) 14px 28px)}
.ax-ph .body span{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);padding:6px 14px;border-radius:999px}
.ax-ph .body{aspect-ratio:auto!important;height:170px}
.toc{top:150px!important}
.kv-toc{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin:0 0 26px;font-size:14px}
.kv-toc b{color:var(--ink-strong);margin-right:4px}
.kv-toc a{text-decoration:none;color:var(--link)}
.kv-toc a:hover{text-decoration:underline}
.kv{margin-bottom:34px}
.kv h2{font-size:21px;font-weight:700;color:var(--heading);margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.kv h3{font-size:17px;font-weight:700;color:var(--ink-strong);margin:26px 0 10px;scroll-margin-top:150px}
.kv p,.kv li{font-size:15.5px;line-height:1.75;color:var(--ink);text-align:justify}
.kv p{margin:0 0 12px}
.kv ul,.kv ol{margin:0 0 14px;padding-left:22px}
.kv li{margin:4px 0}
.kv li ul{margin:4px 0 2px}
.kv b{color:var(--ink-strong);font-weight:500}
.kv .kv-l{font-weight:700;color:var(--ink-strong);margin:16px 0 6px}
.kv-video{margin:6px 0 16px;max-width:none;aspect-ratio:16/7}
.kv-sit{list-style:none;padding:0!important;background:var(--pale);border-radius:14px;padding:14px 18px!important}
.kv-path{display:inline-flex;flex-wrap:wrap;gap:4px 10px;align-items:center;margin-left:4px}
.kv-path i{font-style:normal;width:20px;height:20px;border-radius:50%;background:var(--blue);color:#fff;font-size:11.5px;font-weight:700;display:inline-grid;place-items:center;margin-right:-4px}
.kv-fig{margin:8px 0 18px;text-align:center}
.kv-fig img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:12px}
.kv-fig.kv-sm img{width:auto;max-width:340px;margin:0 auto}
.kv-fig figcaption{font-size:13px;color:var(--ink-soft);font-style:italic;margin-top:8px}
.kv-tip{background:#FFFBE8;border-left:4px solid #FDCE4C;border-radius:0 12px 12px 0;padding:12px 16px}
:root[data-theme="dark"] .kv-tip{background:var(--key)}
.kv .ax-ph{margin:6px 0 18px}
.kv-soon{color:var(--ink-soft)!important}
.kv-soon span{font-size:12px;font-weight:700;color:#8A6100;background:#FFF6D6;border-radius:999px;padding:2px 10px;margin-left:6px}
.kv-rel a{font-weight:500}
.kv-video{aspect-ratio:auto!important;height:300px!important}
.kv .ax-ph .body{height:88px!important}.kv .ax-ph{margin:4px 0 14px}
.art-h .tags{display:none!important}
.kv-toc{display:none!important}
.lesson{padding-top:22px}
.l-grid > article{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:30px 36px;box-shadow:0 1px 2px rgba(27,92,200,.04),0 10px 30px -18px rgba(27,92,200,.18)}
@media (max-width:700px){.l-grid > article{padding:20px 16px}}
.art-h{margin-bottom:18px}
.toc h4{font-size:12.5px!important;font-weight:700;color:var(--ink-soft);letter-spacing:.3px;text-transform:none;margin:14px 8px 6px!important}
.toc a{font-size:14px}
.toc a[aria-current]{font-weight:700;color:var(--link)}
.toc-sub{display:flex;flex-direction:column;margin:2px 0 8px 22px;border-left:2px solid var(--pale);padding-left:10px}
.toc-sub a{font-size:13px!important;color:var(--ink-soft)!important;padding:5px 8px!important;background:none!important;font-weight:400!important}
.toc-sub a:hover{color:var(--link)!important}
.kv-fig{text-align:center;margin:10px 0 20px}
.kv-fig img{display:inline-block!important;width:auto!important;height:auto;max-width:100%;border:1px solid var(--line);border-radius:12px}
.kv-fig.kv-ill img{border:0;border-radius:16px}
.kv-fig.kv-bar img{border-radius:10px}
.kv-flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px}
.kv-flow span{display:inline-flex;align-items:center;gap:8px;background:var(--pale);color:var(--link);font-weight:500;border-radius:999px;padding:6px 14px 6px 6px;font-size:14px}
.kv-flow i{font-style:normal;width:24px;height:24px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700}
.kv-flow em{font-style:normal;color:var(--sky)}
div.kv-tip{margin:6px 0 16px}
div.kv-tip ul{margin:6px 0 0}
.kv a{color:var(--link)}
.kv-fig img{width:100%!important;max-width:100%!important}
.kv-fig.kv-sm img{width:auto!important;max-width:min(100%,340px)!important}
.kv-flow{justify-content:center;background:var(--surface-2);border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin:6px 0 20px}
.toc a[aria-current]{background:#EEF5FF!important;color:#2F6FEB!important;font-weight:500!important}
.toc-sub{border-left:2px solid var(--line)!important}
.toc-sub a{position:relative;transition:color .15s}
.toc-sub a.on{color:var(--link)!important;font-weight:700!important}
.toc-sub a.on::before{content:"";position:absolute;left:-12px;top:6px;bottom:6px;width:2px;border-radius:2px;background:var(--blue)}
.kv-end{margin:26px 0 0;padding-top:18px;border-top:1px solid var(--line);font-weight:700;color:var(--ink-strong);text-align:center}
#gSub{display:none}
.kv h2,.kv h3{scroll-margin-top:90px}.kv{scroll-margin-top:90px}

.mega2{position:absolute;left:50%;top:100%;transform:translate(-50%,8px);min-width:370px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 50px -20px rgba(11,60,130,.35);padding:10px;opacity:0;visibility:hidden;transition:opacity .16s,transform .16s,visibility .16s;z-index:60}
.mega2::before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
.dd:hover .mega2,.dd:has(:focus-visible) .mega2{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega2 a{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:12px;text-decoration:none;color:var(--ink)}
.mega2 a:hover{background:var(--surface-2)}
.mega2 .mi{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;font-size:18px;color:#fff;background:var(--grad);flex-shrink:0}
.mega2 .mi.g{background:var(--grad-gold);color:#0B3C82}
.mega2 .mi img{width:36px;height:36px}
.mega2 b{display:block;font-size:14.5px;font-weight:500;color:var(--ink-strong)}
.mega2 small{display:block;font-size:12.5px;color:var(--ink-soft)}
.mega2 .mf{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:6px;padding:10px 10px 4px;font-size:13px;color:var(--ink-soft)}
.mega2 .mf a{display:inline;padding:0;font-weight:700;color:var(--link)}
.mega2 .mf a:hover{background:none}
@media (max-width:1160px){.mega2{display:none!important}}
.mega2{min-width:380px}
.mega2 .mi{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:18px;color:#fff;background:linear-gradient(135deg,#1B5CC8,#3FA0F5);flex-shrink:0}
/* Slim header thinner */
.ph-row{padding-top:9px!important;padding-bottom:9px!important}
.sbar{height:38px!important}
.crumbs2{font-size:13.5px!important}
/* Wider sidebar + deeper hierarchy */
.l-grid{grid-template-columns:330px minmax(0,1fr)!important;gap:32px!important}
@media (max-width:900px){.l-grid{grid-template-columns:1fr!important}}
.toc{max-height:calc(100vh - 170px);overflow:auto}
.toc-sub2{display:flex;flex-direction:column;margin:0 0 4px 12px;padding-left:10px;border-left:1px dashed var(--line-strong)}
.toc-sub2 a{font-size:12.5px!important;color:var(--ink-soft)!important;padding:3px 8px!important;background:none!important;font-weight:400!important;position:relative}
.toc-sub2 a.on{color:var(--link)!important;font-weight:500!important}
.toc-sub2 a.on::before{display:none}
.stg{display:flex;align-items:center;gap:0;margin:6px 4px 12px;padding:4px 6px 8px}
.stg-l{flex:1;height:2px;background:var(--line-strong);border-radius:2px}
.stg-b{width:38px;height:38px;border-radius:50%;border:1.5px solid var(--line-strong);background:var(--surface);color:var(--ink-soft);display:grid;place-items:center;cursor:pointer;font-size:17px;flex-shrink:0;transition:all .15s}
.stg-b:hover{border-color:var(--sky);color:var(--link)}
.stg-b[aria-selected="true"]{background:linear-gradient(135deg,#1B5CC8,#3FA0F5);border-color:transparent;color:#fff;box-shadow:0 8px 16px -8px rgba(27,92,200,.7)}
.tg h4 em{display:block;font-style:normal;font-size:11px;font-weight:700;letter-spacing:.4px;color:var(--sky);text-transform:uppercase;margin-bottom:2px}
.tg[hidden]{display:none!important}



/* r4 */
.sbar{padding:0 5px 0 18px!important;height:46px!important}
.sbar-btn{flex-shrink:0;height:36px;padding:0 18px;border:0;border-radius:999px;background:linear-gradient(135deg,#1B5CC8,#3FA0F5);color:#fff;font-weight:700;font-size:14px;cursor:pointer;box-shadow:0 6px 14px -8px rgba(27,92,200,.8)}
.sbar-btn:hover{filter:brightness(1.06)}
.sbar input::placeholder{color:#8A9BB5}
.psrch{width:min(380px,100%)!important}
.toc a{font-size:15px!important}
.toc h4,.tg h4 span{font-size:14.5px!important}
.tg h4 em{font-size:12px!important}
.toc-sub a{font-size:14px!important}
.toc-sub2 a{font-size:13.5px!important}
.toc-h b{font-size:17px!important}.toc-h small{font-size:13.5px!important}
.stg-a{flex:1;display:flex;align-items:center;justify-content:center;color:var(--sky);min-width:18px}
.stg-a svg{width:20px;height:20px;display:block}
.stg-b{padding:0!important;line-height:0}
.stg-b span{display:grid;place-items:center;width:100%;height:100%}
.stg-b span .ico{display:block;width:17px;height:17px;margin:0}

/* r5 */
.sbar{padding:0 18px!important;height:44px!important;border:1.5px solid var(--line)!important;box-shadow:none!important;background:var(--surface)!important}
.sbar:focus-within{border-color:var(--line-strong)!important;box-shadow:0 2px 10px -6px rgba(27,92,200,.25)!important}
.stg-a{color:#C3CFE0!important}
.tl-t{margin-left:auto;display:inline-grid;place-items:center;color:var(--ink-soft);transform:rotate(90deg);transition:transform .2s}
.tl-t .ico{font-size:13px}
.toc a.closed .tl-t{transform:rotate(0)}
.toc a[aria-current]{display:flex;align-items:center;gap:8px}
.toc-sub.closed,.toc-sub2.closed{display:none!important}
.ts-row{display:flex;align-items:center}
.ts-row > a{flex:1;min-width:0}
.ts-t{width:22px;height:22px;border:0;background:none;color:var(--ink-soft);cursor:pointer;display:grid;place-items:center;border-radius:6px;transform:rotate(90deg);transition:transform .2s;flex-shrink:0}
.ts-t:hover{background:var(--surface-2);color:var(--link)}
.ts-t.closed{transform:rotate(0)}
.ts-t .ico{font-size:12px}
/* r3: sticky breadcrumb + search, accordion stages, snippets */
#phSlim{position:sticky;top:72px;z-index:30}
@media (max-width:820px){#phSlim{top:64px}}
.ph-slim{box-shadow:0 6px 16px -14px rgba(11,60,130,.35)}
.toc{top:150px!important;max-height:calc(100vh - 170px)!important}
.kv,.kv h2,.kv h3,[id^="kvh-"]{scroll-margin-top:150px!important}
#guide{scroll-margin-top:140px!important}
.flash{animation:flashbg 2.2s ease-out}
@keyframes flashbg{0%,30%{background:#FFF1B8;border-radius:6px}100%{background:transparent}}
.tg{border-top:1px solid var(--line);padding-top:4px}
.tg:first-of-type{border-top:0}
.tg h4{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:8px 8px 6px!important}
.tg-h{cursor:pointer;border-radius:8px;padding:4px 6px;margin:6px 2px!important}
.tg-h:hover{background:var(--surface-2)}
.tg-h .tg-c{font-size:14px;color:var(--ink-soft);transform:rotate(90deg);transition:transform .2s;flex-shrink:0}
.tg:not(.open) .tg-c{transform:rotate(0)}
.tg:not(.open) .tg-b{display:none}
.tg:not(.open) h4{color:var(--ink-soft)}
.tg.open h4 span{color:var(--heading)}
.tg[hidden]{display:block!important}
.snip{display:block;font-style:normal;font-size:12.5px;color:var(--ink);opacity:.85;margin-top:3px;line-height:1.45}
.rs-i .snip{font-size:13px}
.sg .snip{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.snip mark{background:var(--mark);color:inherit;border-radius:3px}

/* Slim header + search (đồng bộ Academy) */
#heroSec{overflow:visible!important;position:relative;z-index:5}#heroSec::before,#heroSec::after{display:none!important}#suggest{z-index:50}
.ph-slim{background:linear-gradient(180deg,#E8F1FE,#EEF5FF);border-bottom:1px solid #DCE8F8;position:relative;z-index:6}
:root[data-theme="dark"] .ph-slim{background:linear-gradient(180deg,#10234A,#0F1F3F);border-bottom-color:var(--line)}
.ph-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:16px;padding-bottom:16px}
.crumbs2{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:14px;color:var(--ink-soft)}
.crumbs2 a{color:var(--ink-soft);text-decoration:none}.crumbs2 a:hover{color:var(--link)}
.crumbs2 span{color:var(--ink-strong);font-weight:500}.crumbs2 .ico{font-size:12px}
.psrch{position:relative;width:min(380px,100%)}
.sbar{display:flex;align-items:center;gap:10px;height:44px;padding:0 18px;background:var(--surface);border:1.5px solid var(--line-strong);border-radius:999px;box-shadow:0 8px 22px -14px rgba(27,92,200,.45)}
.sbar:focus-within{border-color:var(--sky);box-shadow:0 0 0 4px rgba(42,127,232,.12)}
.sbar .ico{font-size:18px;color:#8A9BB5}
.sbar input{flex:1;min-width:0;border:0;background:transparent;font-size:15px;color:var(--ink-strong)}
.sbar input:focus{outline:none}
.psug{position:absolute;left:0;right:0;top:calc(100% + 8px);z-index:40}
.psug .sg-list{max-height:420px;overflow:auto;padding:6px}
.sg-g{font-size:12px;font-weight:700;color:var(--ink-soft);padding:8px 10px 4px}
.sg-all{display:flex;align-items:center;justify-content:center;gap:4px;padding:10px;margin-top:4px;border-top:1px solid var(--line);font-size:13.5px;font-weight:700;color:var(--link);text-decoration:none}
.lesson .crumbs{display:none!important}
.lesson{padding-top:22px!important}
.rsv{padding-top:28px}
.rsv h1{font-size:28px;font-weight:700;margin-bottom:4px}
.rs-c{color:var(--ink-soft);margin:0 0 22px}
.rs{margin-bottom:26px}
.rs h2{font-size:19px;margin-bottom:12px}
.rs h2 small{font-size:13px;font-weight:500;color:var(--ink-soft);background:var(--surface-2);border-radius:999px;padding:2px 10px;margin-left:6px}
.rs-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media (max-width:760px){.rs-list{grid-template-columns:1fr}}
.rs-i{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 14px;text-decoration:none;color:inherit}
.rs-i:hover{border-color:var(--sky)}
.rs-i .ri{width:38px;height:38px;border-radius:11px;background:var(--pale);color:var(--link);display:grid;place-items:center;font-size:18px;flex-shrink:0}
.rs-i b{display:block;color:var(--ink-strong);font-weight:500}
.rs-i small{color:var(--ink-soft);font-size:12.5px}
.rs-i > .ico{margin-left:auto;color:var(--ink-soft)}
.rs-i mark,.sg mark{background:var(--mark);color:inherit;border-radius:3px}
.rs-empty{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px}
#guide{scroll-margin-top:84px}
/* Mascot */
.mascot{width:100%;height:100%;display:block;overflow:visible}
.mascot .m-body{animation:mbob 3.2s ease-in-out infinite;transform-origin:60px 90px}
.mascot .m-eyes{animation:mblink 4.8s infinite;transform-box:fill-box;transform-origin:center}
.mascot .m-mic{animation:mmic 2.4s ease-in-out infinite}
@keyframes mbob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes mblink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.1)}}
@keyframes mmic{0%,100%{fill:#FDCE4C}50%{fill:#FFE28A}}
.chat-btn{background:transparent!important;box-shadow:none!important;padding:0!important;width:96px;height:82px;border-radius:24px!important;display:block!important}
.chat-btn .cb-m{display:block;width:96px;height:80px;filter:drop-shadow(0 10px 14px rgba(27,92,200,.35));transition:transform .2s}
.chat-btn:hover .cb-m{transform:scale(1.06) rotate(-3deg)}
.chat-btn .cb-x{display:none}
.chat.open .chat-btn{width:52px!important;height:52px!important;border-radius:50%!important;background:var(--grad)!important;box-shadow:0 12px 24px -10px rgba(27,92,200,.8)!important}
.chat.open .chat-btn .cb-m{display:none}
.chat.open .chat-btn .cb-x{display:grid;place-items:center;width:100%;height:100%;color:#fff;font-size:22px}
.chat-btn.ping::after{right:10px;top:4px}
.chat.open .chat-btn.ping::after{display:none}
.chat-teaser{position:relative;max-width:250px;background:var(--surface);border:1px solid var(--line);border-radius:18px 18px 4px 18px;padding:12px 30px 12px 14px;font-size:13.5px;line-height:1.45;color:var(--ink);box-shadow:0 18px 36px -16px rgba(11,60,130,.45);cursor:pointer;animation:pop .25s ease-out}
.chat-teaser b{color:var(--heading)}
.ct-x{position:absolute;right:6px;top:6px;width:22px;height:22px;border-radius:50%;border:0;background:var(--surface-2);color:var(--ink-soft);cursor:pointer;font-size:15px;line-height:1}
.chat-av{background:rgba(255,255,255,.95)!important;padding:3px}
.chat-av > span{display:block;width:100%;height:100%}
.chat-hello{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px 14px 14px}
.chat-hello .ch-m{display:block;width:92px;height:76px;margin:0 auto 6px}
.chat-hello b{display:block;color:var(--heading);font-size:15.5px;margin-bottom:4px}
.chat-hello p{margin:0;color:var(--ink-soft);font-size:13.5px}
@media (max-width:600px){.chat-btn{width:70px;height:62px}.chat-btn .cb-m{width:70px;height:58px}.chat-teaser{max-width:210px}}
/* Hero animation */
.hc-av{background:#fff!important;padding:3px}
.hc .sq{opacity:0;transform:translateY(8px);transition:opacity .35s,transform .35s}
.hc .sq.on{opacity:1;transform:none}
.hc .typing.sq:not(.on){height:0;padding:0;margin:-5px 0}
.hc-f{animation:fl 6s ease-in-out infinite}
.f2{animation-delay:-2s}.f3{animation-delay:-4s}
@keyframes fl{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hc-b{min-height:268px}

/* FAQ page */
.faq-hero{background:var(--grad-soft);border-bottom:1px solid var(--line);text-align:center}
.faq-hero .wrap{padding-top:44px;padding-bottom:36px}
.faq-hero h1{font-size:clamp(28px,3.4vw,38px);font-weight:700;letter-spacing:-.5px}
.faq-hero p{margin:8px 0 22px;color:var(--ink-soft)}
.faq-search{display:flex;align-items:center;gap:10px;max-width:620px;margin:0 auto;background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:4px 22px;box-shadow:var(--shadow-2)}
.faq-search:focus-within{border-color:var(--sky)}
.faq-search .ico{font-size:20px;color:#8A9BB5}
.faq-search input{flex:1;border:0;background:transparent;font-size:16px;padding:12px 0;color:var(--ink-strong);min-width:0}
.faq-search input:focus{outline:none}
.faq-page{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;align-items:start;padding-top:32px;padding-bottom:40px}
@media (max-width:900px){.faq-page{grid-template-columns:1fr}.faq-cats{position:static!important;display:flex!important;overflow-x:auto;gap:8px}.faq-cats button{white-space:nowrap;width:auto!important}}
.faq-page #faqList{min-height:calc(100vh - 220px);overflow-anchor:none}
.faq-cats{position:sticky;top:96px;display:flex;flex-direction:column;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow-1)}
.faq-cats button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:0;border-radius:11px;padding:10px 12px;font-size:14.5px;cursor:pointer;color:var(--ink)}
.faq-cats button .ico{font-size:17px;color:var(--ink-soft)}
.faq-cats button span{margin-left:auto;font-size:12px;color:var(--ink-soft);background:var(--surface-2);border-radius:999px;padding:1px 8px}
.faq-cats button:hover{background:var(--surface-2)}
.faq-cats button[aria-selected="true"]{background:var(--pale);color:var(--link);font-weight:500}
.faq-cats button[aria-selected="true"] .ico{color:var(--link)}
.fq-group{margin-bottom:26px}
.fq-group h2{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;margin-bottom:12px}
.fq-group h2 .ico{font-size:20px;color:var(--sky)}
.fa mark{background:var(--mark);color:inherit}
summary mark{background:var(--mark);color:inherit;border-radius:3px}

/* Chat widget */
.chat{position:fixed;right:max(20px,env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.chat-btn{display:flex;align-items:center;gap:10px;border:0;cursor:pointer;background:var(--grad);color:#fff;border-radius:999px;padding:12px 20px 12px 14px;font-weight:700;font-size:15px;box-shadow:0 16px 30px -12px rgba(27,92,200,.8);position:relative}
.chat-btn .ico{font-size:24px}
.chat-btn.ping::after{content:"";position:absolute;right:6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--gold);border:2px solid #fff}
.chat.open .chat-btn span{display:none}
.chat.open .chat-btn{padding:12px}
.chat-panel{width:370px;max-width:calc(100vw - 32px);height:min(560px,calc(100vh - 140px));background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 60px -20px rgba(11,60,130,.45);display:flex;flex-direction:column;overflow:hidden;animation:pop .2s ease-out}
.chat-panel[hidden]{display:none}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.98)}}
.chat-h{display:flex;align-items:center;gap:12px;padding:14px 14px 14px 16px;background:var(--grad);color:#fff}
.chat-av{position:relative;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center;font-size:21px}
.chat-av i{position:absolute;right:0;bottom:0;width:11px;height:11px;border-radius:50%;background:#5BE38A;border:2px solid #2A7FE8}
.chat-t{flex:1}
.chat-t b{display:block;font-size:16px}
.chat-t small{color:#EAF3FF;font-size:12.5px}
.chat-h button{width:34px;height:34px;border-radius:10px;border:0;background:rgba(255,255,255,.16);color:#fff;cursor:pointer;display:grid;place-items:center;font-size:18px}
.chat-h button:hover{background:rgba(255,255,255,.28)}
.chat-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;background:var(--surface-2)}
.cm{max-width:88%;padding:10px 13px;border-radius:16px;font-size:14px;line-height:1.5}
.cm.bot{background:var(--surface);border:1px solid var(--line);border-bottom-left-radius:4px;color:var(--ink)}
.cm.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px}
.chat-chips{display:flex;flex-wrap:wrap;gap:6px}
.chat-chips button{background:var(--surface);border:1px solid var(--line-strong);color:var(--link);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}
.chat-chips button:hover{border-color:var(--sky)}
.cm-links{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.cm-links a{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink-strong);background:var(--surface-2)}
.cm-links a:hover{border-color:var(--sky)}
.cm-links .ico{font-size:17px;color:var(--link);flex-shrink:0}
.cm-links small{display:block;color:var(--ink-soft);font-size:12px}
.cm-links mark{background:var(--mark);color:inherit}
.cm-phone{display:flex;gap:6px;margin-top:8px}
.cm-phone input{flex:1;min-width:0;border:1px solid var(--line-strong);border-radius:10px;padding:8px 10px;font-size:14px;background:var(--surface);color:var(--ink-strong)}
.cm-phone button{border:0;border-radius:10px;background:var(--grad);color:#fff;font-weight:700;padding:0 14px;cursor:pointer}
.cm-ok{margin-top:8px;font-size:13px;color:#1E7E34;font-weight:500}
.cm-acts{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.cm-acts a{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-strong);text-decoration:none;font-weight:500;font-size:13px}
.chat-f{display:flex;align-items:flex-end;gap:8px;padding:10px 12px;border-top:1px solid var(--line);background:var(--surface)}
.chat-f textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:18px;padding:10px 14px;font:inherit;font-size:14px;max-height:110px;background:var(--surface-2);color:var(--ink-strong)}
.chat-f textarea:focus{outline:none;border-color:var(--sky)}
.chat-f button{width:42px;height:42px;border-radius:50%;border:0;background:var(--grad);color:#fff;cursor:pointer;display:grid;place-items:center;font-size:18px;flex-shrink:0}
.chat-note{text-align:center;font-size:12px;color:var(--ink-soft);padding:0 0 10px;background:var(--surface)}
.chat-note a{font-weight:700;text-decoration:none}
@media (max-width:600px){.chat{right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px))}.chat-btn span{display:none}.chat-btn{padding:14px}.chat-panel{width:calc(100vw - 24px);height:calc(100vh - 110px)}}

/* Coming soon */
.soon-hero{background:var(--grad-soft);text-align:center;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.soon-hero::before{content:"";position:absolute;width:520px;height:520px;right:-140px;top:-220px;border-radius:50%;background:radial-gradient(circle,rgba(63,160,245,.22),transparent 65%)}
.soon-hero .wrap{position:relative;padding-top:52px;padding-bottom:48px}
.soon-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--key-ink);background:var(--key);border-radius:999px;padding:5px 14px}
.soon-badge i{width:8px;height:8px;border-radius:50%;background:var(--gold);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.35}}
.soon-ic{width:76px;height:76px;margin:22px auto 16px;border-radius:24px;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:36px;box-shadow:0 16px 30px -14px rgba(27,92,200,.8)}
.soon-hero h1{font-size:clamp(28px,3.4vw,40px);font-weight:700;letter-spacing:-.5px}
.soon-lead{max-width:60ch;margin:12px auto 24px;color:var(--ink);font-size:16px}
.soon-acts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.soon-body{padding-top:40px;padding-bottom:40px}
.soon-body h2{font-size:20px;font-weight:700;margin-bottom:16px;text-align:center}
.soon-feats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:760px){.soon-feats{grid-template-columns:1fr}}
.sf{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow-1)}
.sf-i{width:42px;height:42px;border-radius:12px;background:var(--pale);color:var(--link);display:grid;place-items:center;font-size:20px;margin-bottom:12px}
.sf b{display:block;color:var(--ink-strong);font-size:16px;margin-bottom:4px}
.sf p{margin:0;color:var(--ink-soft);font-size:14px}
.soon-wait{text-align:center;color:var(--ink-soft);margin:22px 0 0;font-size:14.5px}

/* Contact channels */
.contact{padding-top:8px;padding-bottom:56px}
.contact-in{background:var(--grad-soft);border:1px solid var(--line);border-radius:24px;padding:28px}
.contact-in h2{font-size:22px;font-weight:700}
.contact-in > p{margin:4px 0 18px;color:var(--ink-soft)}
.channels{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:900px){.channels{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.channels{grid-template-columns:1fr}}
.chn{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}
.chn:hover{border-color:var(--sky);transform:translateY(-2px)}
.chn .ci{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;color:#fff;background:var(--grad);flex-shrink:0}
.chn .ci.y{background:linear-gradient(135deg,#FDCE4C,#FFE28A);color:#0B3C82}
.chn b{display:block;color:var(--ink-strong);font-size:15px}
.chn .v{display:block;color:var(--link);font-weight:700;font-size:16px}
.chn small{display:block;color:var(--ink-soft);font-size:12.5px;margin-top:2px}

/* Footer */
footer{background:var(--band);border-top:1px solid var(--line);color:var(--ink)}
.f-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-top:40px;padding-bottom:28px}
@media (max-width:820px){.f-main{grid-template-columns:1fr 1fr}}
footer .f-logo img{height:40px;width:auto;margin-bottom:14px}
footer p{margin:0;font-size:14px;max-width:34ch;color:var(--ink-soft)}
footer h4{font-size:15px;font-weight:700;margin-bottom:10px}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin:7px 0;font-size:14px;color:var(--ink-soft)}
footer a{color:var(--ink);text-decoration:none}
footer a:hover{color:var(--link)}
.f-base{border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:16px;padding-bottom:20px;font-size:13px;color:var(--ink-soft)}
.theme{background:var(--surface);border:1px solid var(--line);color:var(--ink-soft);border-radius:999px;padding:4px 12px;cursor:pointer;font-size:13px}
@media (max-width:600px){.wrap{padding:0 16px}.top .wrap{gap:10px}.logo img{height:32px}.login{padding:10px 13px}.login .lt{display:none}.pager{grid-template-columns:1fr}.pager .nx{grid-column:1}.contact-in{padding:18px}}

/* Mục lục cấp 3 (vd: (1) Xác định…, 1. Nhập thông tin…) thụt sâu hơn cấp 2 (Bước N, mục nhỏ) */
.toc-sub2 a.l3{margin-left:14px;font-size:12px!important;padding:2px 8px!important;position:relative}
.toc-sub2 a.l3::before{content:"";position:absolute;left:-8px;top:50%;width:6px;border-top:1px solid var(--line-strong)}
.toc-sub2 a:not(.l3){font-weight:500!important;color:var(--ink)!important}
.toc-sub2 a.on{color:var(--link)!important;font-weight:700!important}

/* Tiêu đề 3 (h4) trong bài: cấp 3 của mục lục */
.kv h4{font-size:15.5px;font-weight:700;color:var(--ink-strong);margin:18px 0 8px;scroll-margin-top:150px}
.ix-soon{margin:0 0 10px;padding:10px 12px;border:1px dashed var(--line);border-radius:10px;background:#f8fafd;color:#6b7686;font-size:13px}

/* Trợ lý ezOne: lựa chọn gần nhất + câu trả lời */
.cm-ans{margin-top:4px;line-height:1.55}
.cm-opts{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.cm-opt{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink-strong);background:var(--surface-2);font:inherit;text-align:left;cursor:pointer;width:100%}
.cm-opt:hover:not(:disabled){border-color:var(--sky)}
.cm-opt:disabled{opacity:.55;cursor:default}
.cm-opt .ico{font-size:17px;color:var(--link);flex-shrink:0}
.cm-opt small{display:block;color:var(--ink-soft);font-size:12px}
.cm-opt.none{justify-content:center;color:var(--ink-soft);background:transparent;border-style:dashed}
.cm-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-strong);background:transparent;color:inherit;font:inherit;font-weight:500;font-size:13px;cursor:pointer}
.cm-btn.pri{background:var(--link);border-color:var(--link);color:#fff}
.cm-btn:disabled{opacity:.55;cursor:default}