/* Homepage (www/index.php), 2026 redesign. Every rule is scoped to body.hk-home.
   Fonts and colour tokens come from hksm-theme.css. */

.hk-home{--panel:#f4f8fb;--well:#e9f2f9;--ink:#0f3554;--muted:#4d6679;--line:#d2e1ec;--accent:#1f7fc8;--lamp:#3fa9f5;--r:10px;--ease:cubic-bezier(.32,.72,0,1);background:#fff}
.hk-home main{overflow:visible}
.hk-home section{padding:96px 0;overflow:visible}
.hk-home img{display:block;max-width:100%;height:auto}
.hk-home :is(h1,h2,h3){font-weight:600;line-height:1.08;margin:0;letter-spacing:-.01em}
.hk-home .hk-wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.hk-home :is(.hp-hero,.rv-grid,.qa-grid,.flag,.hp-story .hk-wrap) > *{min-width:0}
.hk-home .sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* Buttons */
.hk-home .hp-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:999px;font-weight:600;text-decoration:none;white-space:nowrap;border:1px solid transparent;transition:transform .5s var(--ease),background .3s var(--ease)}
.hk-home .hp-btn:active{transform:scale(.98)}
.hk-home .hp-btn-main{background:var(--accent);color:#fff}
.hk-home .hp-btn-main:hover{background:#17679f;color:#fff}
.hk-home .hp-btn-line{border-color:var(--accent);color:var(--accent);background:#fff}
.hk-home .hp-btn-line:hover{background:var(--well);color:var(--accent)}
.hk-home .hp-btn .ico{display:inline-grid;place-items:center;width:28px;height:28px;margin-right:-10px;border-radius:50%;background:rgb(255 255 255 / .2);transition:transform .5s var(--ease)}
.hk-home .hp-btn:hover .ico{transform:translateX(3px)}

/* Hero band: faint blueprint grid and the crest */
.hk-home .hp-band{position:relative;padding-top:72px;background-color:#eef5fb;
  background-image:radial-gradient(55% 70% at 78% 38%,rgb(63 169 245 / .2),transparent 70%),radial-gradient(40% 50% at 10% 10%,rgb(31 127 200 / .08),transparent 70%)}
.hk-home .hp-band::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgb(31 127 200 / .09) 1px,transparent 1px),linear-gradient(90deg,rgb(31 127 200 / .09) 1px,transparent 1px);background-size:32px 32px;
  -webkit-mask-image:radial-gradient(70% 80% at 60% 45%,#000 30%,transparent 80%);mask-image:radial-gradient(70% 80% at 60% 45%,#000 30%,transparent 80%)}
.hk-home .hp-band::after{content:"";position:absolute;left:0;right:0;bottom:0;height:140px;background:linear-gradient(transparent,#fff);pointer-events:none}
.hk-home .hp-band > *{position:relative;z-index:1}
.hk-home .hp-hero{position:relative;display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center;padding:52px 24px 56px}
.hk-home .hp-hero::before{content:"";position:absolute;z-index:-1;left:-90px;top:-10px;width:520px;height:650px;pointer-events:none;background:url(/assets/img/crest-navy.webp) no-repeat 0 0/contain;opacity:.05}
.hk-home .hp-hero h1{font-size:clamp(2rem,3.4vw,2.9rem);max-width:20ch;line-height:1.1;margin-top:8px}
.hk-home .hp-hero > div > p{font-size:1.15rem;color:var(--muted);max-width:44ch;margin:20px 0 30px}
.hk-home .hp-ctas{display:flex;gap:12px;flex-wrap:wrap}
.hk-home .hp-proof{display:flex;align-items:flex-start;max-width:62ch;gap:6px 10px;margin:20px 0 0;font-size:.9rem;color:var(--muted)}
.hk-home .hp-proof > span:last-child{flex:1;min-width:0}
.hk-home .hp-proof .stars{margin-top:3px}
@media (min-width:600px){.hk-home .nw{white-space:nowrap}}
.hk-home .stars{display:inline-flex;gap:2px;color:#f2a516;font-size:1rem;line-height:1}
.hk-home .hp-watch{display:inline-flex;align-items:center;gap:12px;margin-top:22px;text-decoration:none;font-weight:600;color:var(--ink)}
.hk-home .hp-watch .pl{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#fff;color:var(--accent);font-size:1.3rem;box-shadow:0 10px 30px -10px rgb(31 127 200 / .6);transition:transform .5s var(--ease)}
.hk-home .hp-watch:hover .pl{transform:scale(1.08)}
.hk-home .hp-watch small{display:block;font-weight:400;color:var(--muted);font-size:.85rem}

/* Framed panels */
.hk-home .bezel{padding:7px;border-radius:24px;background:rgb(255 255 255 / .55);border:1px solid rgb(15 53 84 / .08);box-shadow:0 30px 70px -40px rgb(15 53 84 / .55)}
.hk-home .bezel > .core{border-radius:18px;background:#fff;box-shadow:inset 0 1px 1px rgb(255 255 255 / .9);overflow:hidden}

/* Subject panel */
.hk-home .console{padding:14px}
.hk-home .console-label{font-family:var(--hk-display);font-weight:600;font-size:.9rem;color:var(--muted);margin:0 0 10px 2px}
.hk-home .screen{background:var(--ink);color:#eaf3fa;border-radius:12px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;min-height:250px}
.hk-home .screen{align-items:center}
.hk-home .screen img{width:calc(100% - 14px);margin:14px 0 14px 14px;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:10px;box-shadow:0 10px 24px -14px rgb(0 0 0 / .6)}
.hk-home .screen .read{padding:20px;display:flex;flex-direction:column;gap:10px}
.hk-home .screen .subj{font-family:var(--hk-display);font-weight:500;font-size:.95rem;color:#8ccaf5}
.hk-home .screen h2{font-size:1.35rem;color:#fff}
.hk-home .screen p{margin:0;font-size:.92rem;color:#bcd2e3}
.hk-home .screen .links{margin-top:auto;display:flex;flex-direction:column;gap:6px;font-size:.9rem}
.hk-home .screen .links a{color:#eaf3fa}
.hk-home .screen.swap .read,.hk-home .screen.swap img{animation:hp-swap .35s ease}
@keyframes hp-swap{from{opacity:.15}to{opacity:1}}
.hk-home .keys{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}
.hk-home .key{appearance:none;font:600 .88rem/1.25 var(--hk-font);color:var(--ink);text-align:left;background:var(--well);border:1px solid var(--line);border-bottom-width:3px;border-radius:var(--r);padding:10px 12px 10px 34px;position:relative;cursor:pointer;min-height:52px;transition:transform .12s}
.hk-home .key::before{content:"";position:absolute;left:12px;top:50%;width:11px;height:11px;margin-top:-5.5px;border-radius:50%;background:#b6c8d6;box-shadow:inset 0 1px 2px rgb(15 53 84 / .35)}
.hk-home .key[aria-pressed="true"]{background:#fff;border-color:var(--accent);color:var(--accent)}
.hk-home .key[aria-pressed="true"]::before{background:var(--lamp);box-shadow:0 0 0 3px rgb(63 169 245 / .3)}
.hk-home .key:active{transform:translateY(2px);border-bottom-width:1px}
@media (prefers-reduced-motion:no-preference){
  .hk-home .key::before{animation:hp-lamp .5s calc(var(--i) * 90ms + 300ms) both}
  .hk-home .key[aria-pressed="true"]::before{animation:none}
}
@keyframes hp-lamp{0%,100%{background:#b6c8d6}40%{background:var(--lamp)}}

/* Everything on HKSM */
.hk-home .hp-res{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;padding-bottom:20px}
.hk-home .hp-res a{display:flex;flex-direction:column;gap:6px;padding:18px 16px;background:#fff;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.hk-home .hp-res a:hover{border-color:var(--accent);transform:translateY(-2px)}
.hk-home .hp-res i{font-size:1.4rem;color:var(--accent)}
.hk-home .hp-res strong{font-family:var(--hk-display);font-weight:600;font-size:1.1rem;line-height:1.2}
.hk-home .hp-res em{font-style:normal;font-weight:600;font-size:.82rem;color:var(--accent)}
.hk-home .hp-res span{font-size:.85rem;color:var(--muted);line-height:1.45}

/* Section headings */
.hk-home .hp-head{max-width:60ch;margin-bottom:30px}
.hk-home :is(.hp-head,.hp-row-head) h2{font-size:clamp(1.9rem,3vw,2.6rem)}
.hk-home :is(.hp-head,.hp-row-head) p{color:var(--muted);margin:10px 0 0}
.hk-home .hp-row-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px}

/* Why this school exists */
.hk-home .hp-story{background:var(--ink);color:#d6e6f2;padding:104px 0;position:relative;overflow:hidden}
.hk-home .hp-story::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgb(255 255 255 / .04) 1px,transparent 1px),linear-gradient(90deg,rgb(255 255 255 / .04) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
.hk-home .hp-story::after{content:"";position:absolute;left:-120px;top:50%;width:520px;height:650px;margin-top:-325px;pointer-events:none;background:url(/assets/img/crest-white.webp) no-repeat 0 0/contain;opacity:.05}
.hk-home .hp-story .hk-wrap{position:relative;z-index:1;display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}
.hk-home .hp-story h2{color:#fff;font-size:clamp(2rem,3.4vw,3rem)}
.hk-home .hp-story p{margin:16px 0 0;font-size:1.08rem;max-width:40ch}
.hk-home .hp-story .bezel{background:rgb(255 255 255 / .06);border-color:rgb(255 255 255 / .12);box-shadow:0 40px 90px -40px rgb(0 0 0 / .6)}
.hk-home .player{position:relative;aspect-ratio:16/9;background:#0b2740}
.hk-home .player button{appearance:none;border:0;padding:0;margin:0;width:100%;height:100%;cursor:pointer;position:relative;display:block;background:none}
.hk-home .player img{width:100%;height:100%;object-fit:cover}
.hk-home .player .pb{position:absolute;left:50%;top:50%;width:84px;height:84px;margin:-42px 0 0 -42px;border-radius:50%;background:#fff;color:var(--accent);display:grid;place-items:center;font-size:2.4rem;box-shadow:0 18px 50px -12px rgb(0 0 0 / .6);transition:transform .5s var(--ease)}
.hk-home .player button:hover .pb{transform:scale(1.08)}
.hk-home .player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.hk-home .tilt{transform:rotate(-1.6deg);transition:transform .8s var(--ease)}
@media (prefers-reduced-motion:no-preference){.hk-home .tilt{animation:hp-sway 7s ease-in-out infinite alternate}}
@keyframes hp-sway{from{transform:rotate(-2deg) translateY(0)}to{transform:rotate(-.8deg) translateY(-6px)}}
.hk-home .tilt:hover,.hk-home .tilt:focus-within,.hk-home .tilt.playing{animation:none;transform:none}

/* Featured courses */
.hk-home .flag{display:grid;grid-template-columns:1.5fr 1fr;gap:20px}
.hk-home .lead-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.hk-home .lead-item .body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1}
.hk-home .lead-item h3{font-size:1.7rem}
.hk-home .lead-item p{margin:0;color:var(--muted)}
.hk-home .price{font-weight:600;color:var(--ink)!important}
.hk-home .side{display:grid;gap:20px}
.hk-home .side a{display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:center;text-decoration:none;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:12px}
.hk-home .side a:hover{border-color:var(--accent)}
.hk-home .side img{border-radius:2px;aspect-ratio:16/9;object-fit:cover}
.hk-home .side h3{font-size:1.15rem}
.hk-home .side p{margin:4px 0 0;font-size:.9rem;color:var(--muted)}

/* What students say */
.hk-home .reviews{position:relative;margin-top:24px;padding:96px 0 104px;background:linear-gradient(180deg,#eaf3fa,#f4f8fb);border-block:1px solid var(--line)}
.hk-home .reviews::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgb(31 127 200 / .07) 1px,transparent 1px),linear-gradient(90deg,rgb(31 127 200 / .07) 1px,transparent 1px);background-size:32px 32px;
  -webkit-mask-image:radial-gradient(60% 70% at 70% 40%,#000 20%,transparent 75%);mask-image:radial-gradient(60% 70% at 70% 40%,#000 20%,transparent 75%)}
.hk-home .reviews > .hk-wrap{position:relative}
.hk-home .reviews h2{font-size:clamp(1.9rem,3vw,2.6rem);margin-bottom:30px}
.hk-home .rv-grid{display:grid;grid-template-columns:300px 1fr;gap:28px;align-items:start}
.hk-home .score{background:rgb(15 53 84 / .05)}
.hk-home .score .core{background:var(--ink);color:#d6e6f2;padding:30px 28px;display:flex;flex-direction:column;align-items:flex-start;gap:10px;position:relative;overflow:hidden}
.hk-home .score .core::after{content:"";position:absolute;right:-40px;bottom:-50px;width:200px;height:250px;background:url(/assets/img/crest-white.webp) no-repeat 0 0/contain;opacity:.06}
.hk-home .score img{width:34px;height:auto;opacity:.9;margin-bottom:6px}
.hk-home .score strong{font-family:var(--hk-display);font-weight:600;font-size:4.2rem;line-height:.95;color:#fff;letter-spacing:-.02em;margin-top:4px}
.hk-home .score .stars{font-size:1.35rem}
.hk-home .score p{margin:6px 0 0;font-size:1rem;line-height:1.5}
.hk-home .free-tag{display:inline-block;margin-left:8px;padding:1px 8px;border-radius:999px;background:var(--well);color:var(--accent);font-size:.75rem;font-weight:600;vertical-align:1px}
.hk-home .lead-quote{position:relative;margin:0 0 26px;padding:6px 0 0 30px;border-left:4px solid var(--accent);display:flex;flex-direction:column;gap:14px}
.hk-home .lead-quote blockquote{margin:0;font-family:var(--hk-display);font-weight:500;font-size:clamp(1.4rem,2.3vw,1.85rem);line-height:1.35;color:var(--ink);max-width:34ch}
.hk-home .rv-track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 32px) / 3);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:4px 2px 6px;scrollbar-width:none}
.hk-home .rv-track::-webkit-scrollbar{display:none}
.hk-home .rv-card{position:relative;scroll-snap-align:start;margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:12px;box-shadow:0 18px 40px -32px rgb(15 53 84 / .5)}
.hk-home .rv-card blockquote{margin:0;font-size:.97rem;line-height:1.6;color:var(--ink);flex:1}
.hk-home :is(.lead-quote,.rv-card) figcaption{font-size:.88rem;color:var(--muted)}
.hk-home :is(.lead-quote,.rv-card) figcaption a{color:var(--accent);font-weight:600;text-decoration:none}
.hk-home :is(.lead-quote,.rv-card) figcaption a:hover{text-decoration:underline}
.hk-home .rv-nav{display:flex;gap:8px;margin-top:14px}
.hk-home .rv-nav button{appearance:none;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;font-size:1.05rem;transition:transform .4s var(--ease),border-color .2s}
.hk-home .rv-nav button:hover{border-color:var(--accent);color:var(--accent)}
.hk-home .rv-nav button:active{transform:scale(.94)}
.hk-home .rv-nav button:disabled{opacity:.35;cursor:default}

/* Browse everything */
.hk-home .browse{background:#fff}
.hk-home .hp-tabs{display:inline-flex;gap:4px;padding:4px;background:#fff;border:1px solid var(--line);border-radius:var(--r);flex-wrap:wrap}
.hk-home .hp-tab{appearance:none;border:0;background:none;font:600 .95rem var(--hk-font);color:var(--muted);padding:10px 18px;border-radius:6px;cursor:pointer}
.hk-home .hp-tab[aria-selected="true"]{background:var(--ink);color:#fff}
.hk-home .hp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:26px}
.hk-home .hp-grid[hidden],.hk-home .hp-grid-more[hidden]{display:none}
.hk-home .hp-grid a{text-decoration:none;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;box-shadow:0 14px 30px -28px rgb(15 53 84 / .6);transition:border-color .2s,transform .2s}
.hk-home .hp-grid a:hover{border-color:var(--accent);transform:translateY(-2px)}
.hk-home .hp-grid img{aspect-ratio:16/9;object-fit:cover}
.hk-home .hp-grid.books{grid-template-columns:repeat(7,1fr)}
.hk-home .hp-grid.books img{aspect-ratio:2/3;object-fit:contain;padding:14px 12px 4px;background:linear-gradient(180deg,#eef5fb,#f8fbfd)}
.hk-home .hp-grid .t{padding:12px 14px 16px;display:flex;flex-direction:column;gap:6px}
.hk-home .hp-grid h3{font-family:var(--hk-font);font-weight:600;font-size:.95rem;line-height:1.35}
.hk-home .hp-grid .tag{align-self:flex-start;font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:4px;background:var(--well);color:var(--accent)}
.hk-home .hp-grid-more{margin-top:24px}

/* Questions and the last call to action */
.hk-home .qa{background:linear-gradient(180deg,#eaf3fa,#f4f8fb);border-top:1px solid var(--line)}
.hk-home .qa-grid{display:grid;grid-template-columns:1fr 360px;gap:56px;align-items:start}
.hk-home .faq-list > details,.hk-home .faq-list .hp-head{max-width:820px}
.hk-home details{border-bottom:1px solid #c9dae7;padding:16px 0}
.hk-home summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:16px}
.hk-home summary::-webkit-details-marker{display:none}
.hk-home summary::after{content:"+";font-size:1.3rem;line-height:1;color:var(--accent)}
.hk-home details[open] summary::after{content:"\2212"}
.hk-home details p{margin:10px 0 0;color:var(--muted)}
.hk-home .next{position:sticky;top:96px;background:rgb(15 53 84 / .05)}
.hk-home .next .core{background:var(--ink);color:#d6e6f2;padding:32px 30px;display:flex;flex-direction:column;align-items:flex-start;gap:12px;position:relative;overflow:hidden}
.hk-home .next .core::after{content:"";position:absolute;right:-40px;bottom:-50px;width:200px;height:250px;background:url(/assets/img/crest-white.webp) no-repeat 0 0/contain;opacity:.06}
.hk-home .next img{width:34px;height:auto;opacity:.9}
.hk-home .next h2{color:#fff;font-size:1.7rem}
.hk-home .next p{margin:0 0 8px}

/* Reveal on scroll */
.js .hk-home .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .hk-home .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .hk-home .reveal{opacity:1;transform:none;transition:none}}

@media (max-width:1100px){
  .hk-home .hp-res{grid-template-columns:repeat(3,1fr)}
  .hk-home .hp-grid.books{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:960px){
  .hk-home .hp-hero,.hk-home .flag{grid-template-columns:1fr}
  .hk-home .hp-hero{padding-top:28px;gap:36px}
  .hk-home .hp-hero::before{left:50%;margin-left:-180px;width:360px;height:450px}
  .hk-home .hp-grid{grid-template-columns:repeat(2,1fr)}
  .hk-home .hp-story .hk-wrap{grid-template-columns:1fr;gap:32px}
  .hk-home .hp-story{padding:64px 0}
  .hk-home .hp-story::after{display:none}
  .hk-home .tilt{animation:none;transform:none}
  .hk-home .rv-grid,.hk-home .qa-grid{grid-template-columns:1fr}
  .hk-home .score .core{flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px 16px}
  .hk-home .score strong{font-size:3.4rem}
  .hk-home .score p{flex-basis:100%}
  .hk-home .rv-track{grid-auto-columns:calc((100% - 16px) / 2)}
  .hk-home .qa-grid{gap:32px}
  .hk-home .next{position:static}
}
@media (max-width:600px){
  .hk-home .screen img{width:calc(100% - 28px);margin:14px 14px 0}
  .hk-home .hk-wrap,.hk-home .hp-hero{padding-left:16px;padding-right:16px}
  .hk-home .screen{grid-template-columns:1fr}
  .hk-home .keys,.hk-home .hp-res{grid-template-columns:repeat(2,1fr)}
  .hk-home .side a{grid-template-columns:110px 1fr}
  .hk-home .hp-grid.books{grid-template-columns:repeat(2,1fr)}
  .hk-home .hp-row-head{flex-direction:column;align-items:start}
  .hk-home section{padding:52px 0}
  .hk-home .rv-track{grid-auto-columns:85%}
  .hk-home .lead-quote{padding-left:18px}
}