/* sunlectric.in static pages: Academy, Learn, FAQ, pages. House style of the Solar Desk.
   Tokens: the five colour schemes are copied from website/src at build time (the marker below), so the Desk and these
   pages always share one palette. The rate board (navy panel, amber numbers) is the one bold element; everything
   else is paper, white cards and navy ink. */
:root{
--bg:#F8F4EC;--surface:#FFFFFF;--sunk:#F1EADD;--ink:#00396A;--text:#1F2A37;--muted:#5A5F69;--line:#E6DDCD;--line-strong:#8C8273;
--shadow:rgba(60,40,0,.14);--amber:#FFA900;--amber-deep:#B87300;--on-amber:#00294D;--amber-bg:#FFEFC8;--amber-text:#7A4C00;--sel-bg:#00396A;
--sel-fg:#FFFFFF;--accent:#00396A;--board:#00396A;--board-2:#0B4A80;--board-fg:#FFFFFF;--board-dim:#BCD0E4;--board-line:#3A6E9F;--board-num:#FFB31A;
--hero-bg:#00396A;--hero-fg:#FFFFFF;--hero-dim:#BCD0E4;--hero-accent:#FFB31A;--hero-panel:#0B4A80;--hero-panel-fg:#FFFFFF;--hero-panel-dim:#BCD0E4;
--hero-panel-line:#3A6E9F;--hero-panel-num:#FFB31A;--hero-mark:var(--logo-icon-rev);--hero-mark-op:.09;--hero-ghost:#FFFFFF;--hero-ghost-line:#6F98C2;
--hdr-bg:#FFFFFF;--hdr-fg:#00396A;--hdr-muted:#5A5F69;--hdr-line:#E6DDCD;--hdr-ctl:#8C8273;--hdr-logo:var(--logo-full);--nav-on-bg:#00396A;
--nav-on-fg:#FFFFFF;--foot-bg:#00396A;--foot-fg:#FFFFFF;--foot-dim:#BCD0E4;--foot-line:#3A6E9F;--foot-accent:#FFB31A;--foot-logo:var(--logo-full-rev);
--ok:#0B7A6E;--ok-bg:#DCF1EC;--ok-text:#05584F;--danger:#B3312F;--wa:#0E7C3A;--on-wa:#FFFFFF;--focus:#0B6BCB;--scrim:rgba(0,22,44,.55);
}
/*SCHEMES:BEGIN generated by schemes.py: every scheme defines the full token set. Default = Sunrise.*/
:root{
--paper:#FFFFFF;--paper-2:#F4F6F9;--paper-ink:#00396A;--paper-text:#1A2633;--paper-muted:#4F5B69;--paper-line:#DDE3EA;--paper-line-strong:#7D8896;--paper-head:#EDF1F6;
}
:root,[data-scheme="sunrise"]{
--bg:#F8F4EC;--surface:#FFFFFF;--sunk:#F1EADD;--ink:#00396A;--text:#1F2A37;--muted:#5A5F69;--line:#E6DDCD;--line-strong:#8C8273;
--shadow:rgba(60,40,0,.14);--amber:#FFA900;--amber-deep:#B87300;--on-amber:#00294D;--amber-bg:#FFEFC8;--amber-text:#7A4C00;--sel-bg:#00396A;
--sel-fg:#FFFFFF;--accent:#00396A;--board:#00396A;--board-2:#0B4A80;--board-fg:#FFFFFF;--board-dim:#BCD0E4;--board-line:#3A6E9F;--board-num:#FFB31A;
--hero-bg:#00396A;--hero-fg:#FFFFFF;--hero-dim:#BCD0E4;--hero-accent:#FFB31A;--hero-panel:#0B4A80;--hero-panel-fg:#FFFFFF;--hero-panel-dim:#BCD0E4;
--hero-panel-line:#3A6E9F;--hero-panel-num:#FFB31A;--hero-mark:var(--logo-icon-rev);--hero-mark-op:.09;--hero-ghost:#FFFFFF;--hero-ghost-line:#6F98C2;
--hdr-bg:#FFFFFF;--hdr-fg:#00396A;--hdr-muted:#5A5F69;--hdr-line:#E6DDCD;--hdr-ctl:#8C8273;--hdr-logo:var(--logo-full);--nav-on-bg:#00396A;
--nav-on-fg:#FFFFFF;--tab-bg:#FFFFFF;--tab-fg:#5A5F69;--tab-on-fg:#00396A;--tab-on-bg:#00396A;--tab-on-icon:#FFB31A;--tab-mark:var(--logo-icon);
--tab-mark-on:var(--logo-icon-rev);--foot-bg:#00396A;--foot-fg:#FFFFFF;--foot-dim:#BCD0E4;--foot-line:#3A6E9F;--foot-accent:#FFB31A;
--foot-logo:var(--logo-full-rev);--ok:#0B7A6E;--ok-bg:#DCF1EC;--ok-text:#05584F;--up:#B3312F;--down:#17784A;--danger:#B3312F;--wa:#0E7C3A;
--on-wa:#FFFFFF;--focus:#0B6BCB;--scrim:rgba(0,22,44,.55);--logo:var(--logo-full);--mark:var(--logo-icon);color-scheme:light;
}
@media (prefers-color-scheme: dark){
:root:not([data-theme="light"]):where(:not([data-scheme]),[data-scheme="sunrise"]){
--bg:#06182C;--surface:#0C2541;--sunk:#081E36;--ink:#F2F6FB;--text:#DCE6F1;--muted:#A3B8CE;--line:#1B3D61;--line-strong:#5C82AA;
--shadow:rgba(0,0,0,.55);--amber:#FFA900;--amber-deep:#FFB733;--on-amber:#00294D;--amber-bg:#3A2A06;--amber-text:#FFC452;--sel-bg:#FFA900;
--sel-fg:#00294D;--accent:#FFC452;--board:#0B3560;--board-2:#114376;--board-fg:#FFFFFF;--board-dim:#B0C8E0;--board-line:#3D6E9F;--board-num:#FFB31A;
--hero-bg:#0B3560;--hero-fg:#FFFFFF;--hero-dim:#B0C8E0;--hero-accent:#FFB31A;--hero-panel:#114376;--hero-panel-fg:#FFFFFF;--hero-panel-dim:#B0C8E0;
--hero-panel-line:#3D6E9F;--hero-panel-num:#FFB31A;--hero-mark:var(--logo-icon-rev);--hero-mark-op:.09;--hero-ghost:#FFFFFF;--hero-ghost-line:#6F98C2;
--hdr-bg:#0C2541;--hdr-fg:#F2F6FB;--hdr-muted:#A3B8CE;--hdr-line:#1B3D61;--hdr-ctl:#5C82AA;--hdr-logo:var(--logo-full-rev);--nav-on-bg:#FFA900;
--nav-on-fg:#00294D;--tab-bg:#0C2541;--tab-fg:#A3B8CE;--tab-on-fg:#F2F6FB;--tab-on-bg:#FFA900;--tab-on-icon:#00294D;--tab-mark:var(--logo-icon-rev);
--tab-mark-on:var(--logo-icon);--foot-bg:#041222;--foot-fg:#FFFFFF;--foot-dim:#BCD0E4;--foot-line:#3A6E9F;--foot-accent:#FFB31A;
--foot-logo:var(--logo-full-rev);--ok:#1FB5A4;--ok-bg:#093B39;--ok-text:#62D9CA;--up:#FF8A80;--down:#6BD69B;--danger:#FF8A80;--wa:#0E7C3A;
--on-wa:#FFFFFF;--focus:#7CC4FF;--scrim:rgba(0,22,44,.55);--logo:var(--logo-full-rev);--mark:var(--logo-icon-rev);color-scheme:dark;
}
}
:root[data-theme="dark"]:where(:not([data-scheme]),[data-scheme="sunrise"]){
--bg:#06182C;--surface:#0C2541;--sunk:#081E36;--ink:#F2F6FB;--text:#DCE6F1;--muted:#A3B8CE;--line:#1B3D61;--line-strong:#5C82AA;
--shadow:rgba(0,0,0,.55);--amber:#FFA900;--amber-deep:#FFB733;--on-amber:#00294D;--amber-bg:#3A2A06;--amber-text:#FFC452;--sel-bg:#FFA900;
--sel-fg:#00294D;--accent:#FFC452;--board:#0B3560;--board-2:#114376;--board-fg:#FFFFFF;--board-dim:#B0C8E0;--board-line:#3D6E9F;--board-num:#FFB31A;
--hero-bg:#0B3560;--hero-fg:#FFFFFF;--hero-dim:#B0C8E0;--hero-accent:#FFB31A;--hero-panel:#114376;--hero-panel-fg:#FFFFFF;--hero-panel-dim:#B0C8E0;
--hero-panel-line:#3D6E9F;--hero-panel-num:#FFB31A;--hero-mark:var(--logo-icon-rev);--hero-mark-op:.09;--hero-ghost:#FFFFFF;--hero-ghost-line:#6F98C2;
--hdr-bg:#0C2541;--hdr-fg:#F2F6FB;--hdr-muted:#A3B8CE;--hdr-line:#1B3D61;--hdr-ctl:#5C82AA;--hdr-logo:var(--logo-full-rev);--nav-on-bg:#FFA900;
--nav-on-fg:#00294D;--tab-bg:#0C2541;--tab-fg:#A3B8CE;--tab-on-fg:#F2F6FB;--tab-on-bg:#FFA900;--tab-on-icon:#00294D;--tab-mark:var(--logo-icon-rev);
--tab-mark-on:var(--logo-icon);--foot-bg:#041222;--foot-fg:#FFFFFF;--foot-dim:#BCD0E4;--foot-line:#3A6E9F;--foot-accent:#FFB31A;
--foot-logo:var(--logo-full-rev);--ok:#1FB5A4;--ok-bg:#093B39;--ok-text:#62D9CA;--up:#FF8A80;--down:#6BD69B;--danger:#FF8A80;--wa:#0E7C3A;
--on-wa:#FFFFFF;--focus:#7CC4FF;--scrim:rgba(0,22,44,.55);--logo:var(--logo-full-rev);--mark:var(--logo-icon-rev);color-scheme:dark;
}
[data-scheme="sky"]{
--bg:#F5F8FC;--surface:#FFFFFF;--sunk:#EAF1F9;--ink:#00396A;--text:#102A43;--muted:#4A6380;--line:#DCE5F0;--line-strong:#6C84A0;
--shadow:rgba(0,57,106,.12);--amber:#FFA900;--amber-deep:#1C6DD0;--on-amber:#00294D;--amber-bg:#E3EFFC;--amber-text:#14569F;--sel-bg:#1C6DD0;
--sel-fg:#FFFFFF;--accent:#1C6DD0;--board:#EAF3FD;--board-2:#FFFFFF;--board-fg:#0B2545;--board-dim:#45607D;--board-line:#C3D6EC;--board-num:#00396A;
--hero-bg:linear-gradient(180deg,#E6F1FD 0%,#F5F8FC 100%);--hero-fg:#00396A;--hero-dim:#3F5873;--hero-accent:#14569F;--hero-panel:#FFFFFF;
--hero-panel-fg:#0B2545;--hero-panel-dim:#45607D;--hero-panel-line:#D3E1F0;--hero-panel-num:#00396A;--hero-mark:var(--logo-icon);--hero-mark-op:.06;
--hero-ghost:#00396A;--hero-ghost-line:#6C84A0;--hdr-bg:#FFFFFF;--hdr-fg:#00396A;--hdr-muted:#4A6380;--hdr-line:#DCE5F0;--hdr-ctl:#6C84A0;
--hdr-logo:var(--logo-full);--nav-on-bg:#E3EFFC;--nav-on-fg:#14569F;--tab-bg:#FFFFFF;--tab-fg:#4A6380;--tab-on-fg:#14569F;--tab-on-bg:#E3EFFC;
--tab-on-icon:#14569F;--tab-mark:var(--logo-icon);--tab-mark-on:var(--logo-icon);--foot-bg:#00396A;--foot-fg:#FFFFFF;--foot-dim:#C2D5E8;
--foot-line:#3A6E9F;--foot-accent:#FFB31A;--foot-logo:var(--logo-full-rev);--ok:#0B7A6E;--ok-bg:#DCF1EC;--ok-text:#05584F;--up:#B3312F;--down:#17784A;
--danger:#B3312F;--wa:#0E7C3A;--on-wa:#FFFFFF;--focus:#1C6DD0;--scrim:rgba(10,30,60,.45);--logo:var(--logo-full);--mark:var(--logo-icon);color-scheme:light;
}
[data-scheme="flare"]{
--bg:#FFFFFF;--surface:#FFFFFF;--sunk:#FFF3E3;--ink:#002A4F;--text:#16233A;--muted:#5B5F6B;--line:#F0E2CE;--line-strong:#9A8770;
--shadow:rgba(140,60,0,.16);--amber:#FFA900;--amber-deep:#C2410C;--on-amber:#00294D;--amber-bg:#FFEBD6;--amber-text:#9A3412;--sel-bg:#C2410C;
--sel-fg:#FFFFFF;--accent:#C2410C;--board:#002A4F;--board-2:#0B3A66;--board-fg:#FFFFFF;--board-dim:#BFD0E3;--board-line:#35608C;--board-num:#FFB21A;
--hero-bg:linear-gradient(128deg,#FFB400 0%,#FF9A00 48%,#FF7A00 100%);--hero-fg:#002A4F;--hero-dim:#1C2F4A;--hero-accent:#002A4F;--hero-panel:#FFFFFF;
--hero-panel-fg:#002A4F;--hero-panel-dim:#55585F;--hero-panel-line:#F3DDC2;--hero-panel-num:#C2410C;--hero-mark:var(--logo-icon);--hero-mark-op:.10;
--hero-ghost:#002A4F;--hero-ghost-line:#002A4F;--hdr-bg:#FFFFFF;--hdr-fg:#002A4F;--hdr-muted:#5B5F6B;--hdr-line:#FFB400;--hdr-ctl:#9A8770;
--hdr-logo:var(--logo-full);--nav-on-bg:#C2410C;--nav-on-fg:#FFFFFF;--tab-bg:#FFFFFF;--tab-fg:#5B5F6B;--tab-on-fg:#9A3412;--tab-on-bg:#FFEBD6;
--tab-on-icon:#C2410C;--tab-mark:var(--logo-icon);--tab-mark-on:var(--logo-icon);--foot-bg:#002A4F;--foot-fg:#FFFFFF;--foot-dim:#BFD0E3;
--foot-line:#35608C;--foot-accent:#FFB21A;--foot-logo:var(--logo-full-rev);--ok:#0B7A6E;--ok-bg:#DCF1EC;--ok-text:#05584F;--up:#B3312F;--down:#17784A;
--danger:#B3312F;--wa:#0E7C3A;--on-wa:#FFFFFF;--focus:#0B6BCB;--scrim:rgba(0,22,44,.55);--logo:var(--logo-full);--mark:var(--logo-icon);color-scheme:light;
}
[data-scheme="grid"]{
--bg:#F1F8F4;--surface:#FFFFFF;--sunk:#E4F1EA;--ink:#00396A;--text:#14304A;--muted:#4B6862;--line:#D3E6DC;--line-strong:#6E8E84;
--shadow:rgba(10,70,60,.13);--amber:#FFA900;--amber-deep:#0F766E;--on-amber:#00294D;--amber-bg:#FFF0CC;--amber-text:#7A4C00;--sel-bg:#0F766E;
--sel-fg:#FFFFFF;--accent:#0F766E;--board:#0D3D45;--board-2:#145059;--board-fg:#FFFFFF;--board-dim:#B4D6D2;--board-line:#3B7A7F;--board-num:#FFBE3B;
--hero-bg:linear-gradient(150deg,#0D3D45 0%,#0B5F59 100%);--hero-fg:#FFFFFF;--hero-dim:#CBE8E2;--hero-accent:#FFC64F;--hero-panel:#0E4A50;
--hero-panel-fg:#FFFFFF;--hero-panel-dim:#B9DCD6;--hero-panel-line:#3B7A7F;--hero-panel-num:#FFC64F;--hero-mark:var(--logo-icon-rev);
--hero-mark-op:.08;--hero-ghost:#FFFFFF;--hero-ghost-line:#7FB5AE;--hdr-bg:#FFFFFF;--hdr-fg:#00396A;--hdr-muted:#4B6862;--hdr-line:#D3E6DC;
--hdr-ctl:#6E8E84;--hdr-logo:var(--logo-full);--nav-on-bg:#0F766E;--nav-on-fg:#FFFFFF;--tab-bg:#FFFFFF;--tab-fg:#4B6862;--tab-on-fg:#0B5F59;
--tab-on-bg:#0F766E;--tab-on-icon:#FFFFFF;--tab-mark:var(--logo-icon);--tab-mark-on:var(--logo-icon-rev);--foot-bg:#0D3D45;--foot-fg:#FFFFFF;
--foot-dim:#B4D6D2;--foot-line:#3B7A7F;--foot-accent:#FFBE3B;--foot-logo:var(--logo-full-rev);--ok:#0B7A6E;--ok-bg:#D5EFE6;--ok-text:#05584F;
--up:#B3312F;--down:#17784A;--danger:#B3312F;--wa:#0E7C3A;--on-wa:#FFFFFF;--focus:#0B6BCB;--scrim:rgba(0,22,44,.55);--logo:var(--logo-full);
--mark:var(--logo-icon);color-scheme:light;
}
[data-scheme="midnight"]{
--bg:#0A1330;--surface:#121C40;--sunk:#0D1737;--ink:#F5F7FF;--text:#DDE3F6;--muted:#A7B1D3;--line:#24305C;--line-strong:#6372A6;
--shadow:rgba(0,0,0,.6);--amber:#FFA900;--amber-deep:#FFB733;--on-amber:#00294D;--amber-bg:#3B2B08;--amber-text:#FFC966;--sel-bg:#FFA900;
--sel-fg:#0A1330;--accent:#FFC966;--board:#1B2155;--board-2:#252C69;--board-fg:#FFFFFF;--board-dim:#BCC3EC;--board-line:#4A539A;--board-num:#FFB733;
--hero-bg:radial-gradient(120% 90% at 85% 0%,rgba(255,169,0,.22) 0%,rgba(255,169,0,0) 55%),linear-gradient(160deg,#0A1330 0%,#1E2160 100%);
--hero-fg:#FFFFFF;--hero-dim:#C3C9EC;--hero-accent:#FFB733;--hero-panel:#1B2155;--hero-panel-fg:#FFFFFF;--hero-panel-dim:#BCC3EC;
--hero-panel-line:#4A539A;--hero-panel-num:#FFB733;--hero-mark:var(--logo-icon-rev);--hero-mark-op:.08;--hero-ghost:#FFFFFF;--hero-ghost-line:#7A83C4;
--hdr-bg:#0A1330;--hdr-fg:#F5F7FF;--hdr-muted:#A7B1D3;--hdr-line:#24305C;--hdr-ctl:#6372A6;--hdr-logo:var(--logo-full-rev);--nav-on-bg:#FFA900;
--nav-on-fg:#0A1330;--tab-bg:#0D1737;--tab-fg:#A7B1D3;--tab-on-fg:#FFC966;--tab-on-bg:#FFA900;--tab-on-icon:#0A1330;--tab-mark:var(--logo-icon-rev);
--tab-mark-on:var(--logo-icon);--foot-bg:#070E25;--foot-fg:#FFFFFF;--foot-dim:#B3BBE3;--foot-line:#2A3566;--foot-accent:#FFB733;
--foot-logo:var(--logo-full-rev);--ok:#2CC2A8;--ok-bg:#0B3A3C;--ok-text:#6FE0CB;--up:#FF9A8F;--down:#74DCA2;--danger:#FF9A8F;--wa:#0E7C3A;
--on-wa:#FFFFFF;--focus:#9FB4FF;--scrim:rgba(2,6,20,.7);--logo:var(--logo-full-rev);--mark:var(--logo-icon-rev);color-scheme:dark;
}
/*SCHEMES:END*/
:root{
--logo-full:url("/assets/img/logo-full.png");--logo-full-rev:url("/assets/img/logo-full-rev.png");
--logo-icon:url("/assets/img/logo-icon.png");--logo-icon-rev:url("/assets/img/logo-icon-rev.png");
--f-display:"Poppins","Noto Sans",system-ui,sans-serif;
--f-body:"Noto Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
--lh:1.6;--max:1180px;--measure:68ch;--r:20px;--r-sm:14px;
--danger-bg:#FBE5E3;--danger-text:#8E2421;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]):where(:not([data-scheme]),[data-scheme="sunrise"]){--danger-bg:#3A1514;--danger-text:#FFB4AC}}
:root[data-theme="dark"]:where(:not([data-scheme]),[data-scheme="sunrise"]),[data-scheme="midnight"]{--danger-bg:#3A1514;--danger-text:#FFB4AC}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:16px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:1rem;line-height:var(--lh);overflow-wrap:break-word;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto;outline:none}
h1,h2,h3,h4{font-family:var(--f-display);color:var(--ink);line-height:1.2;margin:0;text-wrap:balance}
p{margin:0}
a{color:var(--ink);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
button,input,select,textarea{font:inherit;color:inherit}
img,svg{max-width:100%}
img{height:auto}
::placeholder{color:var(--muted);opacity:1}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:16px;min-width:0}
@media(min-width:768px){.wrap{padding-inline:24px}}
.num{font-variant-numeric:tabular-nums}
.ic{width:20px;height:20px;flex:none}
.vh-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:8px}
.skip:focus{left:16px}
.muted{color:var(--muted)}
.small{font-size:.875rem;color:var(--muted)}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* ---------- announcement ---------- */
.ann{background:var(--amber);color:var(--on-amber);font-size:.9rem;line-height:1.35}
.ann-in{display:flex;align-items:center;gap:10px;min-height:44px;padding-block:6px}
.ann p{flex:1 1 auto;min-width:0}
.ann a{color:inherit;font-weight:700}
.ann-x{flex:none;display:grid;place-items:center;width:40px;height:40px;border:0;border-radius:10px;background:transparent;color:inherit;cursor:pointer}
.ann-x:hover{background:rgba(0,41,77,.1)}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:var(--hdr-bg);color:var(--hdr-fg);border-bottom:1px solid var(--hdr-line)}
[data-scheme="flare"] .hdr{border-bottom-width:3px}
.hdr-row{display:flex;align-items:center;gap:8px;min-height:58px}
.logo{display:block;flex:none;width:128px;height:32px;background:var(--hdr-logo) left center/contain no-repeat}
.hdr-sp{flex:1 1 auto}
.hbtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding:0 12px;border-radius:999px;border:1.5px solid var(--hdr-ctl);background:transparent;color:var(--hdr-fg);font-weight:600;font-size:.9rem;cursor:pointer;text-decoration:none;white-space:nowrap}
.hbtn:hover{border-color:var(--hdr-fg)}
.hbtn .t{display:none}
.hdr .btn-wa{min-height:44px;padding:8px 14px;border-radius:999px;font-size:.9rem}
.hdr .d-only{display:none}
@media(max-width:379px){.hdr .btn-wa .t{display:none}.hdr .btn-wa{width:44px;padding:0}}
.snav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;padding-bottom:8px;margin-top:-2px;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}
.snav::-webkit-scrollbar{display:none}
.snav a{flex:none;display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:999px;text-decoration:none;font-weight:600;font-size:.9rem;color:var(--hdr-muted);white-space:nowrap}
.snav a:hover{color:var(--hdr-fg);box-shadow:inset 0 0 0 1.5px var(--hdr-ctl)}
.snav a[aria-current="page"],.snav a[aria-current="true"]{background:var(--nav-on-bg);color:var(--nav-on-fg)}
@media(min-width:768px){
.hdr-row{min-height:68px;gap:10px}
.logo{width:168px;height:42px}
.hbtn .t{display:inline}
.hdr .d-only{display:inline-flex}
.snav{-webkit-mask-image:none;mask-image:none;padding-bottom:10px}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:10px 18px;border-radius:var(--r-sm);border:1.5px solid transparent;font-weight:600;font-size:1rem;line-height:1.2;text-decoration:none;cursor:pointer;text-align:center;max-width:100%}
.btn:hover{filter:brightness(1.06)}
.btn-wa{background:var(--wa);color:var(--on-wa)}
.btn-amber{background:var(--amber);color:var(--on-amber)}
.btn-ink{background:var(--sel-bg);color:var(--sel-fg)}
.btn-line{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}
.btn-ghost-h{background:transparent;border-color:var(--hero-ghost-line);color:var(--hero-ghost)}
.btn-ghost-b{background:transparent;border-color:var(--board-dim);color:var(--board-fg)}
.btn-sm{min-height:44px;padding:8px 14px;font-size:.92rem}
.btn:disabled{opacity:.55;cursor:not-allowed;filter:none}
.chip{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;border-radius:999px;border:1.5px solid var(--line-strong);background:var(--surface);color:var(--text);font-size:.86rem;font-weight:600;text-decoration:none;cursor:pointer;white-space:nowrap}
.chip[aria-pressed="true"]{background:var(--sel-bg);border-color:var(--sel-bg);color:var(--sel-fg)}
.tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;background:var(--amber-bg);color:var(--amber-text);font-size:.8rem;font-weight:600;text-decoration:none;line-height:1.6}
a.tag:hover{text-decoration:underline}
.badge-ok{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;background:var(--ok-bg);color:var(--ok-text);font-size:.8rem;font-weight:700}

/* ---------- breadcrumbs ---------- */
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:2px 0;font-size:.86rem}
.crumbs li{display:inline-flex;align-items:center;min-width:0;color:var(--muted)}
.crumbs li+li::before{content:"";width:6px;height:6px;margin:0 10px 0 8px;border-right:1.5px solid currentColor;border-top:1.5px solid currentColor;transform:rotate(45deg);opacity:.7}
.crumbs a{color:var(--muted);text-decoration:none;padding:6px 0}
.crumbs a:hover{color:var(--ink);text-decoration:underline}
.crumbs [aria-current]{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:28ch}
.hero .crumbs li,.hero .crumbs a{color:var(--hero-dim)}
.hero .crumbs [aria-current]{color:var(--hero-fg)}

/* ---------- hero band (navy) ---------- */
.hero{background:var(--hero-bg);color:var(--hero-fg);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:420px;height:470px;right:-170px;top:-140px;background:var(--hero-mark) center/contain no-repeat;opacity:var(--hero-mark-op);pointer-events:none}
.hero-in{position:relative;display:grid;gap:24px;padding-block:22px 30px}
.hero h1{color:var(--hero-fg);font-weight:800;font-size:clamp(2rem,1.3rem + 3.2vw,3.4rem);line-height:1.05;letter-spacing:-.025em;margin-top:10px}
.hero-lead{color:var(--hero-dim);margin-top:14px;max-width:52ch;font-size:1.06rem}
.hero-ctas{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-ctas .btn{flex:1 1 220px}
.facts{display:flex;flex-wrap:wrap;gap:10px 26px;list-style:none;margin:22px 0 0;padding:0;color:var(--hero-dim);font-size:.9rem}
.facts b{display:block;font:700 1.45rem/1.1 var(--f-display);color:var(--hero-accent);font-variant-numeric:tabular-nums}
.hero.compact .hero-in{padding-block:18px 28px}
.hero.compact h1{font-size:clamp(1.8rem,1.3rem + 2.2vw,2.75rem)}
@media(min-width:900px){
.hero-in{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center;gap:56px;padding-block:28px 56px}
.hero.compact .hero-in{grid-template-columns:minmax(0,1fr);padding-block:24px 44px}
.hero::before{right:auto;left:40%;top:-90px;width:520px;height:580px}
.hero-ctas .btn{flex:0 1 auto}
}
.hero-img{border-radius:var(--r);width:100%;aspect-ratio:16/10;object-fit:cover}

/* the rate board: navy panel, amber numbers */
.board{background:var(--hero-panel);color:var(--hero-panel-fg);border:1px solid var(--hero-panel-line);border-radius:var(--r);padding:16px 18px;min-width:0;box-shadow:0 18px 40px -26px var(--shadow)}
.board-top{display:flex;justify-content:space-between;align-items:baseline;gap:4px 12px;flex-wrap:wrap;padding-bottom:10px;border-bottom:1px solid var(--hero-panel-line)}
.board-title{font:700 1.05rem var(--f-display);color:var(--hero-panel-fg)}
.board-sub{font-size:.8rem;color:var(--hero-panel-dim)}
.syl{list-style:none;margin:0;padding:0}
.syl li{border-bottom:1px dashed var(--hero-panel-line)}
.syl li:last-child{border-bottom:0}
.syl a{display:grid;grid-template-columns:2.4em minmax(0,1fr) auto;align-items:baseline;gap:12px;padding:9px 0;color:var(--hero-panel-fg);text-decoration:none;min-height:44px}
.syl a:hover .syl-t{text-decoration:underline}
.syl-n{font:700 1.3rem/1 var(--f-display);color:var(--hero-panel-num);font-variant-numeric:tabular-nums}
.syl-t{font-size:.94rem;line-height:1.35}
.syl-m{font-size:.78rem;color:var(--hero-panel-dim);white-space:nowrap}
.syl li.done .syl-m{color:var(--hero-panel-num)}

/* ---------- sections ---------- */
.section{padding-block:36px 8px}
.sec-h{font-size:clamp(1.35rem,1.15rem + .8vw,1.75rem);font-weight:700;letter-spacing:-.01em}
.sec-lead{color:var(--muted);margin-top:6px;max-width:60ch}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px 24px;margin-bottom:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;min-width:0}
@media(min-width:600px){.card{padding:22px}}

/* steps: a real sequence, so numbered */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:12px;counter-reset:st}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1040px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}}
.steps li{counter-increment:st;position:relative;padding:18px 18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
@media(min-width:1040px){.steps li{border:0;border-radius:0}.steps li+li{border-left:1px solid var(--line)}}
.steps li::before{content:counter(st);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--amber-bg);color:var(--amber-text);font:700 1rem var(--f-display);margin-bottom:12px}
.steps h3{font-size:1.04rem}
.steps p{color:var(--muted);font-size:.92rem;margin-top:6px}

/* module cards */
.mods{list-style:none;margin:0;padding:0;display:grid;gap:12px}
@media(min-width:680px){.mods{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1080px){.mods{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}}
.mod{position:relative;display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;min-width:0}
.mod:hover{border-color:var(--line-strong)}
.mod-top{display:flex;align-items:center;gap:12px}
.mod-ic{width:44px;height:44px;border-radius:12px;background:var(--amber-bg);color:var(--amber-text);display:grid;place-items:center;flex:none}
.mod-ic svg{width:24px;height:24px}
.mod-k{font-size:.82rem;color:var(--muted);font-weight:600}
.mod h3{font-size:1.08rem;line-height:1.3}
.mod h3 a{color:var(--ink);text-decoration:none}
.mod h3 a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.mod h3 a:focus-visible{outline:none}
.mod:focus-within{outline:3px solid var(--focus);outline-offset:2px}
.mod p{color:var(--muted);font-size:.92rem}
.mod-meta{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:4px 16px;font-size:.84rem;color:var(--muted)}
.mod-meta b{color:var(--text);font-weight:700;font-variant-numeric:tabular-nums}
.prog{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--muted)}
.prog .bar{flex:1 1 auto;height:6px;border-radius:6px;background:var(--sunk);overflow:hidden}
.prog .bar i{display:block;height:100%;width:0;background:var(--amber);border-radius:inherit}
.mod .best{position:absolute;top:14px;right:14px}

/* final exam band */
.final{margin-top:36px;background:var(--board);color:var(--board-fg);border-radius:var(--r);padding:22px;display:grid;gap:18px;position:relative;overflow:hidden}
.final::after{content:"";position:absolute;right:-60px;bottom:-90px;width:260px;height:290px;background:var(--logo-icon-rev) center/contain no-repeat;opacity:.08;pointer-events:none}
.final h2{color:var(--board-fg);font-size:clamp(1.35rem,1.15rem + .8vw,1.75rem)}
.final p{color:var(--board-dim);margin-top:8px;max-width:58ch}
.final .figs{display:flex;flex-wrap:wrap;gap:8px 28px;margin-top:14px;list-style:none;padding:0}
.final .figs b{display:block;font:700 1.6rem/1.1 var(--f-display);color:var(--board-num);font-variant-numeric:tabular-nums}
.final .figs li{font-size:.86rem;color:var(--board-dim)}
.final .acts{display:flex;flex-wrap:wrap;gap:10px;align-self:center;position:relative;z-index:1}
@media(min-width:900px){.final{grid-template-columns:minmax(0,1fr) auto;padding:30px 32px}}

/* ---------- module page ---------- */
.mod-layout{display:grid;gap:24px;padding-block:28px 8px}
@media(min-width:960px){.mod-layout{grid-template-columns:minmax(0,1fr) 340px;gap:40px;align-items:start}}
.lessons{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:ls}
.lessons li{counter-increment:ls}
.ls{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);gap:4px 14px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px;text-decoration:none;color:var(--text)}
.ls:hover{border-color:var(--line-strong)}
.ls::before{content:counter(ls);grid-row:span 3;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;border:2px solid var(--line-strong);color:var(--ink);font:700 1.05rem var(--f-display)}
.ls.read::before{content:"";background:var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 12.5 4 4 8-9' fill='none' stroke='white' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/24px no-repeat;border-color:var(--ok)}
.ls h3{font-size:1.04rem;line-height:1.3;color:var(--ink)}
.ls p{font-size:.9rem;color:var(--muted)}
.ls .m{font-size:.82rem;color:var(--muted)}
.empty{background:var(--surface);border:1.5px dashed var(--line-strong);border-radius:var(--r);padding:22px;color:var(--muted)}
.empty h3{color:var(--ink);font-size:1.05rem;margin-bottom:6px}
.test-card{background:var(--board);color:var(--board-fg);border-radius:var(--r);padding:20px;display:grid;gap:14px}
.test-card h2{color:var(--board-fg);font-size:1.2rem}
.test-card dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0}
.test-card dt{font-size:.78rem;color:var(--board-dim);order:2}
.test-card dd{margin:0;font:700 1.4rem/1.1 var(--f-display);color:var(--board-num);font-variant-numeric:tabular-nums;order:1}
.test-card dl>div{display:flex;flex-direction:column}
.test-card p{color:var(--board-dim);font-size:.9rem}
.test-card .best-line{color:var(--board-fg);font-weight:600}
.side{display:grid;gap:14px}
@media(min-width:960px){.side{position:sticky;top:130px}}
.pager{display:grid;gap:10px;margin-top:32px}
@media(min-width:640px){.pager{grid-template-columns:1fr 1fr}}
.pager a{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--surface);text-decoration:none;min-height:64px}
.pager a:hover{border-color:var(--line-strong)}
.pager .k{font-size:.8rem;color:var(--muted)}
.pager .t{font-weight:600;color:var(--ink);line-height:1.3}
.pager .next{text-align:right}
@media(min-width:640px){.pager .next:only-child{grid-column:2}}

/* ---------- reading pages: lesson, article, page ---------- */
.read-top{padding-block:14px 0}
.read-grid{display:grid;gap:24px;padding-block:8px 16px}
@media(min-width:1000px){.read-grid{grid-template-columns:260px minmax(0,1fr);gap:48px}.read-grid.right{grid-template-columns:minmax(0,1fr) 280px}}
.read-h{max-width:var(--measure);padding-top:10px}
.kicker{font-size:.9rem;color:var(--muted);font-weight:600}
.kicker a{color:inherit}
.read-h h1{font-weight:800;font-size:clamp(1.9rem,1.35rem + 2.4vw,2.9rem);line-height:1.1;letter-spacing:-.02em;margin-top:8px}
.read-h .lead{font-size:1.12rem;color:var(--muted);margin-top:14px;line-height:1.55}
.byline{display:flex;flex-wrap:wrap;gap:4px 18px;margin-top:16px;font-size:.88rem;color:var(--muted)}
.byline b{color:var(--text);font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.objectives{max-width:var(--measure);margin-top:24px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:16px;padding:16px 18px}
.objectives h2{font-size:1rem}
.objectives ul{margin:8px 0 0;padding-left:1.2em}
.objectives li{margin:4px 0}

.rail{display:none}
@media(min-width:1000px){.rail{display:block;position:sticky;top:130px;align-self:start;max-height:calc(100vh - 150px);overflow:auto;scrollbar-width:thin}}
.rail-box{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:14px}
.rail-h{font:700 .95rem/1.3 var(--f-display);color:var(--ink)}
.rail-h a{color:inherit;text-decoration:none}
.rail-h a:hover{text-decoration:underline}
.rail ol,.rail-m ol{list-style:none;margin:10px 0 12px;padding:0;counter-reset:rl}
.rail li,.rail-m li{counter-increment:rl}
.rail li a,.rail-m li a{display:grid;grid-template-columns:24px minmax(0,1fr);gap:8px;padding:8px 6px;border-radius:10px;text-decoration:none;color:var(--text);font-size:.9rem;line-height:1.35}
.rail li a::before,.rail-m li a::before{content:counter(rl);font:700 .85rem/1.6 var(--f-display);color:var(--muted);text-align:center}
.rail li a:hover,.rail-m li a:hover{background:var(--sunk)}
.rail li a[aria-current],.rail-m li a[aria-current]{background:var(--sel-bg);color:var(--sel-fg)}
.rail li a[aria-current]::before,.rail-m li a[aria-current]::before{color:var(--sel-fg)}
.rail li a.read::before,.rail-m li a.read::before{content:"✓";color:var(--ok)}
.rail .btn,.rail-m .btn{width:100%}
.rail-m{margin-top:16px;background:var(--surface);border:1px solid var(--line);border-radius:16px}
.rail-m summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:48px;padding:6px 14px;cursor:pointer;font-weight:600;color:var(--ink);list-style:none}
.rail-m summary::-webkit-details-marker{display:none}
.rail-m summary::after{content:"";width:9px;height:9px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-4px;flex:none}
.rail-m[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.rail-m .in{padding:0 10px 12px}
@media(min-width:1000px){.rail-m{display:none}}
.toc{display:none}
@media(min-width:1000px){.toc{display:block;position:sticky;top:130px;align-self:start}}
.toc h2{font-size:.95rem}
.toc ol{list-style:none;margin:10px 0 0;padding:0;border-left:2px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;font-size:.9rem;line-height:1.35}
.toc a:hover{color:var(--ink);border-left-color:var(--line-strong)}
.toc a.on{color:var(--ink);border-left-color:var(--amber);font-weight:600}
.toc .promo{margin-top:22px}

/* prose */
.prose{max-width:var(--measure);font-size:1.0625rem;line-height:1.72;color:var(--text);margin-top:28px}
.prose>*+*{margin-top:1em}
.prose h2{font-size:clamp(1.35rem,1.2rem + .6vw,1.6rem);font-weight:700;margin-top:2em;letter-spacing:-.01em;scroll-margin-top:130px}
.prose h3{font-size:1.18rem;font-weight:700;margin-top:1.6em;scroll-margin-top:130px}
.prose h4{font-size:1rem;margin-top:1.4em}
.prose h2+*,.prose h3+*{margin-top:.6em}
.prose ul,.prose ol{padding-left:1.35em}
.prose li+li{margin-top:.35em}
.prose li::marker{color:var(--amber-deep)}
.prose strong{color:var(--ink);font-weight:700}
.prose a{color:var(--ink);font-weight:600}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--sunk);padding:.1em .35em;border-radius:6px}
.prose pre{background:var(--sunk);padding:14px 16px;border-radius:14px;overflow:auto;font-size:.9rem;line-height:1.5}
.prose pre code{background:none;padding:0}
.prose blockquote{margin-left:0;padding:4px 0 4px 18px;border-left:4px solid var(--line-strong);color:var(--muted)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);-webkit-overflow-scrolling:touch}
.prose table{border-collapse:collapse;width:100%;font-size:.94rem;line-height:1.45;font-variant-numeric:tabular-nums}
.prose th,.prose td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.prose thead th{background:var(--sunk);color:var(--ink);font-weight:700;white-space:nowrap}
.prose tbody tr:last-child td{border-bottom:0}
.prose img{border-radius:14px}
.diagram{margin:1.6em 0;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:16px;color:var(--ink);--sun:var(--amber);--line:var(--muted)}
.diagram svg{display:block;width:100%;height:auto}
.callout{border-radius:16px;padding:14px 16px 14px 18px;border-left:5px solid;font-size:1rem;line-height:1.6}
.callout>*+*{margin-top:.6em}
.callout-k{display:block;font-family:var(--f-display);margin-bottom:2px}
.callout.tip{background:var(--amber-bg);border-color:var(--amber);color:var(--text)}
.callout.tip .callout-k{color:var(--amber-text)}
.callout.warn{background:var(--danger-bg);border-color:var(--danger);color:var(--text)}
.callout.warn .callout-k{color:var(--danger-text)}
.callout.std{background:var(--board);border-color:var(--board-num);color:var(--board-fg)}
.callout.std .callout-k,.callout.std strong,.callout.std a{color:var(--board-num)}
.prose details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 16px}
.prose details>summary{cursor:pointer;font-weight:600;color:var(--ink);min-height:44px;display:flex;align-items:center}
.prose details[open]>summary{border-bottom:1px solid var(--line);margin-bottom:10px}
.prose details>*:last-child{margin-bottom:12px}
.sim{margin:1.6em 0}
.sim:empty{min-height:120px;border:1.5px dashed var(--line-strong);border-radius:var(--r);display:grid;place-items:center;color:var(--muted);font-size:.92rem;padding:16px;text-align:center}
.sim:empty::before{content:"Live calculator"}

/* article extras */
.art-faq{max-width:var(--measure);margin-top:40px}
.related{margin-top:44px;border-top:1px solid var(--line);padding-top:28px}
.cards3{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:12px}
@media(min-width:760px){.cards3{grid-template-columns:repeat(3,minmax(0,1fr))}}
.acard{position:relative;display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px;min-width:0;height:100%}
.acard:hover{border-color:var(--line-strong)}
.acard h3{font-size:1.02rem;line-height:1.35}
.acard h3 a{color:var(--ink);text-decoration:none}
.acard h3 a::after{content:"";position:absolute;inset:0}
.acard p{font-size:.9rem;color:var(--muted)}
.acard .m{margin-top:auto;font-size:.8rem;color:var(--muted)}
.promo-card{background:var(--board);color:var(--board-fg);border-radius:18px;padding:16px;display:grid;gap:8px}
.promo-card h3{color:var(--board-fg);font-size:1rem}
.promo-card p{color:var(--board-dim);font-size:.88rem}
.promo-card .btn{background:var(--amber);color:var(--on-amber)}

/* ---------- learn index ---------- */
.searchbox{position:relative;max-width:560px;margin-top:22px}
.searchbox input{width:100%;min-height:52px;padding:0 16px 0 46px;border-radius:var(--r-sm);border:1.5px solid var(--hero-ghost-line);background:var(--surface);color:var(--text);font-size:1rem}
.searchbox svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted);pointer-events:none}
.filters{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px 2px 8px;margin-top:22px}
.filters::-webkit-scrollbar{display:none}
.learn-grid{display:grid;gap:24px;padding-block:10px 8px}
@media(min-width:1000px){.learn-grid{grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}}
.alist{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.arow{position:relative;display:grid;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px}
.arow:hover{border-color:var(--line-strong)}
.arow h2{font-size:1.2rem;line-height:1.3}
.arow h2 a{color:var(--ink);text-decoration:none}
.arow h2 a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.arow:focus-within{outline:3px solid var(--focus);outline-offset:2px}
.arow h2 a:focus-visible{outline:none}
.arow p{color:var(--muted)}
.arow .m{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;font-size:.84rem;color:var(--muted)}
.arow .tags{position:relative;z-index:1}
.arow.feature{background:var(--board);border-color:var(--board-line);padding:24px}
.arow.feature h2{font-size:clamp(1.35rem,1.15rem + .8vw,1.8rem)}
.arow.feature h2 a{color:var(--board-fg)}
.arow.feature p,.arow.feature .m{color:var(--board-dim)}
.arow.feature .tag{background:var(--board-2);color:var(--board-num)}
.side-stack{display:grid;gap:12px}
@media(min-width:1000px){.side-stack{position:sticky;top:130px}}
.no-results{padding:22px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{list-style:none;margin:0;padding:0;display:grid;gap:10px;max-width:820px}
.qa{background:var(--surface);border:1px solid var(--line);border-radius:16px;scroll-margin-top:130px}
.qa summary{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:16px 18px;cursor:pointer;list-style:none;font:600 1.04rem/1.4 var(--f-display);color:var(--ink);min-height:56px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"";flex:none;width:10px;height:10px;margin-top:6px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .15s}
.qa[open] summary::after{transform:rotate(-135deg);margin-top:10px}
.qa .a{padding:0 18px 16px;color:var(--text);line-height:1.65}
.qa .a>*+*{margin-top:.7em}
.qa .a ul,.qa .a ol{padding-left:1.3em}
.qa .tags{padding:0 18px 16px}
.qa:target{border-color:var(--amber);box-shadow:0 0 0 2px var(--amber)}

/* ---------- ask band + lead form ---------- */
.ask{margin-top:56px;background:var(--sunk);border-top:1px solid var(--line)}
.ask-in{display:grid;gap:24px;padding-block:36px 40px}
@media(min-width:900px){.ask-in{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px;align-items:start;padding-block:48px 56px}}
.ask h2{font-size:clamp(1.5rem,1.2rem + 1.2vw,2.1rem);font-weight:800;letter-spacing:-.015em}
.ask-copy p{color:var(--muted);margin-top:10px;max-width:46ch}
.ask-acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.ask-hours{margin-top:14px;font-size:.88rem;color:var(--muted)}
.lead{display:grid;gap:14px}
.lead h3{font-size:1.1rem}
.fgrid{display:grid;gap:12px}
@media(min-width:560px){.fgrid{grid-template-columns:1fr 1fr}.fgrid .full{grid-column:1/-1}}
.field{display:grid;gap:6px;min-width:0}
.field label{font-weight:600;font-size:.9rem;color:var(--text)}
.field .opt{font-weight:400;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:10px 12px;border-radius:12px;border:1.5px solid var(--line-strong);background:var(--surface);color:var(--text)}
.field textarea{min-height:96px;resize:vertical}
.field [aria-invalid="true"]{border-color:var(--danger)}
.ferr{color:var(--danger);font-size:.84rem;min-height:0}
.ferr:empty{display:none}
.lead-done{display:grid;gap:8px;align-content:start}
.lead-done h3{color:var(--ok-text)}
.lead .fine{font-size:.82rem;color:var(--muted)}

/* ---------- footer ---------- */
.foot{background:var(--foot-bg);color:var(--foot-fg);margin-top:0}
.ask+.foot{margin-top:0}
main+.foot{margin-top:56px}
.foot .wrap{padding-block:36px 28px}
.foot-top{display:grid;gap:18px;padding-bottom:26px;border-bottom:1px solid var(--foot-line)}
@media(min-width:900px){.foot-top{grid-template-columns:minmax(0,1fr) auto;align-items:end}}
.foot-logo{width:168px;height:42px;background:var(--foot-logo) left center/contain no-repeat}
.foot-tag{font:800 clamp(1.7rem,1.2rem + 2vw,2.6rem)/1.05 var(--f-display);letter-spacing:-.02em;margin-top:16px}
.foot-pro{color:var(--foot-accent);font-weight:600;margin-top:6px}
.foot-acts{display:flex;flex-wrap:wrap;gap:10px}
.foot .btn-line{background:transparent;border-color:var(--foot-dim);color:var(--foot-fg)}
.foot-grid{display:grid;gap:24px;padding-block:26px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(min-width:900px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.foot-grid .contact{grid-column:1/-1}
@media(min-width:900px){.foot-grid .contact{grid-column:auto}}
.foot h2{font:600 .86rem var(--f-body);color:var(--foot-dim);margin-bottom:8px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.foot ul a{display:inline-flex;align-items:center;min-height:36px;color:var(--foot-fg);text-decoration:none;font-size:.94rem}
.foot ul a:hover{text-decoration:underline}
.foot dl{margin:0;display:grid;gap:10px}
.foot dt{font-size:.82rem;color:var(--foot-dim)}
.foot dd{margin:0;font-size:.94rem}
.foot dd a{color:var(--foot-fg)}
.foot-fine{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;padding-top:20px;border-top:1px solid var(--foot-line);font-size:.84rem;color:var(--foot-dim)}
.foot-fine label{display:inline-flex;align-items:center;gap:8px}
.foot-fine select{min-height:40px;padding:0 10px;border-radius:10px;background:transparent;color:var(--foot-fg);border:1.5px solid var(--foot-dim)}
.foot-fine select option{color:#1F2A37;background:#fff}

/* ---------- search dialog ---------- */
.sdlg{width:min(680px,calc(100vw - 24px));max-height:min(80vh,720px);margin:8vh auto auto;padding:0;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);color:var(--text);box-shadow:0 30px 80px -30px rgba(0,0,0,.5)}
.sdlg::backdrop{background:var(--scrim)}
.sdlg form{display:flex;align-items:center;gap:8px;padding:10px 10px 10px 16px;border-bottom:1px solid var(--line)}
.sdlg input{flex:1 1 auto;min-width:0;min-height:48px;border:0;background:transparent;font-size:1.08rem;color:var(--text)}
.sdlg input:focus{outline:none}
.sdlg form:focus-within{box-shadow:inset 0 -2px 0 var(--focus)}
.sdlg .x{flex:none;display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:12px;background:var(--sunk);color:var(--text);cursor:pointer}
.sres{list-style:none;margin:0;padding:8px;overflow:auto;max-height:calc(min(80vh,720px) - 72px)}
.sres li a{display:grid;gap:2px;padding:10px 12px;border-radius:12px;text-decoration:none;color:var(--text)}
.sres li a:hover,.sres li a[aria-selected="true"]{background:var(--sunk)}
.sres .k{font-size:.76rem;font-weight:700;color:var(--amber-text)}
.sres .t{font-weight:600;color:var(--ink);line-height:1.35}
.sres .d{font-size:.86rem;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sres mark{background:var(--amber-bg);color:inherit;border-radius:3px;padding:0 1px}
.shint{padding:14px 18px;color:var(--muted);font-size:.9rem}
.search-page .sres{max-height:none;padding:0;margin-top:18px}
.search-page .sres li a{border:1px solid var(--line);background:var(--surface);margin-bottom:10px;padding:14px 16px}

/* ---------- misc ---------- */
.nf{padding-block:56px 20px;max-width:640px}
.nf .big{font:800 clamp(4rem,3rem + 6vw,7rem)/1 var(--f-display);color:var(--amber);letter-spacing:-.04em}
.nf h1{margin-top:8px;font-size:clamp(1.6rem,1.3rem + 1.2vw,2.2rem)}
.nf p{color:var(--muted);margin-top:10px}
.link-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.contact-cards{display:grid;gap:12px;margin-top:28px;max-width:var(--measure)}
@media(min-width:640px){.contact-cards{grid-template-columns:1fr 1fr}}
.contact-cards .card h2{font-size:1rem}
.contact-cards .card p{margin-top:6px}
.app-note{max-width:640px;margin-top:24px}
noscript .card{margin-top:16px}
@media print{.hdr,.ann,.ask,.foot,.rail,.rail-m,.toc,.pager,.sdlg{display:none!important}body{background:#fff}}
.hero-k{color:var(--hero-accent);font-weight:600;margin-top:14px}
.hero-k+h1{margin-top:4px}
.read-grid{grid-template-columns:minmax(0,1fr)}
.read-grid>*,.lesson,.article{min-width:0}
@media(max-width:767px){.hdr{position:relative}}
@media(min-width:768px){.filters{flex-wrap:wrap;overflow:visible}}
.dead-link{text-decoration:underline dotted;text-underline-offset:3px}
.foot-fine .fine-link{color:var(--foot-fg);margin-left:14px;display:inline-block;padding-block:8px}
@media(min-width:1000px){.read-grid{grid-template-columns:260px minmax(0,1fr)}.read-grid.right{grid-template-columns:minmax(0,1fr) 280px}}