/* TSCK MVP v5 — 版式依 HK Land 品牌指引：左邊界起排、大量留白、Light 字重、
   字級只用一條比例尺（1.25），標題與內文對比靠字級而非字重。
   色彩依 TSCK 手冊第 4 章：米白 60–70%、成長綠 15–20%、萌芽紅 8–12%、黃 ≤5%、無漸層；
   白字只放在紅／深綠底上。 */
@font-face{font-family:Univers;src:url(/assets/fonts/UniversLight.woff2) format("woff2");font-weight:300;font-display:swap}
@font-face{font-family:Univers;src:url(/assets/fonts/UniversRegular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Univers;src:url(/assets/fonts/UniversBold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"TSCK HK";src:url(/assets/fonts/tsck-hk-300.woff2) format("woff2");font-weight:300 400;font-display:swap}
@font-face{font-family:"TSCK HK";src:url(/assets/fonts/tsck-hk-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"TSCK SC";src:url(/assets/fonts/tsck-sc-300.woff2) format("woff2");font-weight:300 400;font-display:swap}
@font-face{font-family:"TSCK SC";src:url(/assets/fonts/tsck-sc-500.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  --red:#C42834;--green:#4B873C;--yellow:#FFE132;--lgreen:#B9D778;
  --green-deep:#2F5A26;--ink:#1F2A1B;--paper:#FBF7EF;--paper2:#F2EDE1;
  --tint:#5B6655;--line:rgba(31,42,27,.14);
  /* 一條字級尺：16 · 18 · 20 · 25 · 31 · 39 · 49 · 61 */
  --fs-xs:.875rem;--fs-s:1rem;--fs-m:1.125rem;--fs-l:clamp(1.125rem,1.4vw,1.25rem);
  --fs-h4:clamp(1.25rem,1.8vw,1.5625rem);--fs-h3:clamp(1.5rem,2.3vw,1.953rem);
  --fs-h2:clamp(1.75rem,3vw,2.441rem);--fs-h1:clamp(2.25rem,4.6vw,3.815rem);
  --fs-num:clamp(2.75rem,5vw,3.815rem);
  --gutter:clamp(20px,5vw,72px);--maxw:1360px;--ease:cubic-bezier(.22,.61,.36,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:Univers,var(--cjk),system-ui,sans-serif;font-weight:300;font-size:var(--fs-m);line-height:1.6;-webkit-font-smoothing:antialiased}
body.zh{font-family:var(--cjk),system-ui,sans-serif;line-height:1.85;letter-spacing:.03em}
body.zh .num,body.zh .idx,body.zh .ch-num,body.zh .prog-age,body.zh .steps span{font-family:Univers,sans-serif;letter-spacing:0}
img,video,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-weight:300;margin:0}
p{margin:0 0 1em}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:10px 16px;z-index:100}
.skip:focus{left:16px}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
.tint{color:var(--tint)}

/* header */
.site-header{position:fixed;inset:0 0 auto;z-index:50;padding-top:env(safe-area-inset-top,0px);background:rgba(251,247,239,.94);
  border-bottom:1px solid transparent;transition:border-color .3s,transform .4s var(--ease)}
.site-header.scrolled{border-bottom-color:var(--line)}
.site-header.hide{transform:translateY(-100%)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;height:80px}
.lockup{display:flex;align-items:center;gap:14px;text-decoration:none}
.lockup img{height:52px;width:auto}
.lockup-text{display:flex;flex-direction:column;line-height:1.3}
.lockup-en{font-family:Univers,sans-serif;font-weight:700;font-size:11px;letter-spacing:.05em;color:var(--green)}
.lockup-zh{font-family:"TSCK HK",sans-serif;font-weight:500;font-size:15px;letter-spacing:.08em;color:var(--green)}
.main-nav{display:flex;align-items:center;gap:36px}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:28px}
.main-nav a{text-decoration:none;font-size:var(--fs-s);position:relative;padding:6px 0}
.main-nav>ul:first-child a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.main-nav>ul:first-child a:hover::after{transform:scaleX(1)}
.lang{gap:2px!important;border-left:1px solid var(--line);padding-left:20px!important}
.lang a{display:inline-block;min-width:36px;text-align:center;padding:6px!important;font-size:var(--fs-xs);color:var(--tint)}
.lang a[aria-current=true]{color:var(--green-deep);font-weight:400;box-shadow:inset 0 -2px 0 var(--green)}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.menu-btn span:not(.sr){position:absolute;left:10px;right:10px;height:1.5px;background:var(--ink);transition:transform .3s}
.menu-btn span:nth-child(1){top:17px}.menu-btn span:nth-child(2){top:25px}
.menu-btn[aria-expanded=true] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.menu-btn[aria-expanded=true] span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

/* hero：影片固定在底層，內容捲上來覆蓋（HK Land 首頁的 sticky 手法） */
.hero{position:relative;height:100svh;min-height:560px;display:flex;align-items:flex-end;background:var(--paper2)}
.hero-media{position:absolute;inset:0;overflow:hidden}
.bg-video{width:100%;height:100%;object-fit:cover;background:var(--paper2)}
.hero-box-row{position:relative;width:100%;padding-bottom:clamp(24px,5vh,56px)}
.hero-box{background:var(--paper);max-width:560px;padding:clamp(28px,3.4vw,48px);border-top:4px solid var(--red)}
.eyebrow{font-size:var(--fs-xs);color:var(--green);margin-bottom:16px;letter-spacing:.05em;font-weight:400}
.hero h1{font-size:var(--fs-h1);line-height:1.1;margin-bottom:18px;color:var(--green-deep)}
body.zh .hero h1{letter-spacing:.08em}
.mask{display:block;overflow:hidden;padding-bottom:.1em}
.line{display:block}
.lead{font-size:var(--fs-l);max-width:26em;margin-bottom:28px}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;text-decoration:none;font-size:var(--fs-s);font-weight:400;border:1px solid var(--green-deep);transition:background .3s,color .3s,border-color .3s}
.btn-primary{background:var(--green-deep);color:#fff}
.btn-primary:hover{background:var(--red);border-color:var(--red)}
.btn-ghost{color:var(--green-deep)}
.btn-ghost:hover{background:var(--green-deep);color:#fff}
.btn::after{content:"→";transition:transform .3s var(--ease)}
.btn:hover::after{transform:translateX(4px)}
.motion-toggle{position:absolute;right:var(--gutter);bottom:clamp(24px,5vh,56px);width:44px;height:44px;border-radius:50%;border:0;background:rgba(251,247,239,.92);cursor:pointer;display:grid;place-items:center;z-index:2}
.motion-toggle svg{width:14px;height:14px;fill:var(--ink)}
.motion-toggle .i-play{display:none}
.motion-toggle[aria-pressed=true] .i-play{display:block}
.motion-toggle[aria-pressed=true] .i-pause{display:none}

/* sections */
.section{position:relative;padding-block:clamp(80px,11vw,150px);background:var(--paper)}
.label{display:flex;align-items:center;gap:12px;font-size:var(--fs-xs);color:var(--green);font-weight:400;margin-bottom:clamp(28px,4vw,48px);letter-spacing:.05em}
.label::after{content:"";flex:0 0 40px;height:1px;background:currentColor}
.idx{font-weight:400;font-variant-numeric:tabular-nums;color:var(--red)}
.display{font-size:var(--fs-h2);line-height:1.3;max-width:18em;color:var(--ink)}
body.zh .display{line-height:1.55;letter-spacing:.05em}
.display em{font-style:normal;color:var(--green)}
.display.narrow{max-width:22em;margin-bottom:clamp(40px,5vw,64px)}
.body-lg{font-size:var(--fs-l);max-width:32em;color:var(--tint)}
.body-col{max-width:34em;color:var(--tint)}
.grid-2{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(32px,6vw,110px);align-items:start}
.note{font-size:var(--fs-xs);color:var(--tint);margin-top:28px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:clamp(56px,8vw,100px) 0 0;border-top:1px solid var(--line)}
.stat{padding:28px 28px 0 0;margin:0}
.stat+.stat{padding-left:28px;border-left:1px solid var(--line)}
.num{font-family:Univers,sans-serif;font-weight:300;font-size:var(--fs-num);line-height:1;color:var(--green);font-variant-numeric:tabular-nums;margin-bottom:12px}
.stat:nth-child(2) .num{color:var(--red)}
.num sup{font-size:.45em;vertical-align:top;margin-left:2px;color:var(--red)}
.stat dd{margin:0;color:var(--tint);font-size:var(--fs-s);max-width:16em}

/* 02 標誌故事：圖標黏在左邊，右邊四段捲過時，對應那一層亮起 */
.symbol{background:var(--paper2)}
.sym-grid{grid-template-columns:1fr 1fr;align-items:start}
.sym-stage{position:sticky;top:110px;display:flex;justify-content:center;align-items:center;height:calc(100svh - 150px);max-height:680px}
.sym-figure{position:relative;height:min(64svh,540px);aspect-ratio:1132/2000}
.mark-svg{width:100%;height:100%}
.mark-svg path{transition:opacity .6s var(--ease)}
.sym-figure.focus .mark-svg path{opacity:.18}
.sym-figure.f-a .mark-svg path.m-ring,.sym-figure.f-a .mark-svg path.m-sun,.sym-figure.f-a .mark-svg path.m-ts{opacity:1}
.sym-figure.f-b .mark-svg path.m-ring{opacity:1}
.sym-figure.f-c .mark-svg path.m-stem{opacity:1}
.sym-figure.f-d .mark-svg path.m-page,.sym-figure.f-d .mark-svg path.m-book{opacity:1}
.sym-marker{position:absolute;left:100%;top:30%;width:clamp(36px,6vw,96px);display:flex;align-items:center;transform:translateY(-50%);transition:top .6s var(--ease)}
.sym-line{flex:1;height:1px;background:var(--ink)}
.sym-dot{width:9px;height:9px;border-radius:50%;background:var(--red)}
.sym-copy .display{margin-bottom:20px}
.sym-steps{list-style:none;margin:clamp(40px,6vw,72px) 0 0;padding:0}
.sym-steps li{padding:28px 0 28px 0;border-top:1px solid var(--line);min-height:36svh;opacity:.4;transition:opacity .5s}
.sym-steps li.on{opacity:1}
.sym-steps .idx{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;border:1px solid var(--red);font-size:var(--fs-xs)}
.sym-steps li.on .idx{background:var(--red);color:#fff}
.sym-steps h3{font-size:var(--fs-h4);margin:14px 0 8px;color:var(--green-deep)}
.sym-steps p{max-width:28em;color:var(--tint);font-size:var(--fs-s)}

/* 03 學習：疊層章節 */
.learning{padding-bottom:clamp(48px,6vw,80px)}
.stack{position:relative}
.stack-panel{position:sticky;top:0;height:100svh;min-height:560px;overflow:hidden;display:flex;align-items:flex-end;background:var(--paper2)}
.stack-media{position:absolute;inset:0}
.stack-media .bg-video{transform:scale(1.06);will-change:transform}
.stack-row{position:relative;width:100%;padding-bottom:clamp(24px,6vh,64px);display:flex}
.side-right .stack-row{justify-content:flex-end}
.stack-box{max-width:460px;padding:clamp(26px,3vw,44px);background:var(--paper)}
.stack-box .ch-num{display:flex;gap:8px;font-family:Univers,sans-serif;font-weight:400;font-size:var(--fs-xs);margin-bottom:14px;color:var(--red)}
.ch-of{opacity:.6}
.stack-box h3{font-size:var(--fs-h3);line-height:1.25;margin-bottom:14px;color:var(--green-deep)}
body.zh .stack-box h3{letter-spacing:.06em}
.stack-box p:last-child{margin:0;font-size:var(--fs-s)}
.tone-paper .stack-box{background:var(--paper);border-top:4px solid var(--green)}
.tone-cream .stack-box{background:var(--paper2);border-top:4px solid var(--red)}
.tone-green .stack-box{background:var(--green-deep);color:#fff}
.tone-green .stack-box h3{color:#fff}.tone-green .ch-num{color:var(--lgreen)!important}
.tone-red .stack-box{background:var(--red);color:#fff}
.tone-red .stack-box h3{color:#fff}.tone-red .ch-num{color:#fff!important}

/* 04 性格：四種品牌色輪流作頂線，黃只做小圓點（≤5%） */
.traits{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,28px)}
.traits li{padding:26px 0 0;border-top:3px solid var(--green)}
.traits li:nth-child(2){border-color:var(--red)}
.traits li:nth-child(3){border-color:var(--lgreen)}
.traits li:nth-child(4){border-color:var(--green-deep)}
.traits h3{font-size:var(--fs-h4);color:var(--green-deep);margin-bottom:10px;display:flex;align-items:center;gap:10px}
.traits h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 1px rgba(31,42,27,.15)}
.traits p{color:var(--tint);font-size:var(--fs-s)}

/* 05 課程：深綠底反白（手冊允許），卡片米白 */
.tone-green-bg{background:var(--green-deep);color:#fff}
.tone-green-bg .label{color:var(--lgreen)}
.tone-green-bg .display{color:#fff}
.tone-green-bg .note{color:rgba(255,255,255,.75)}
.prog-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2.4vw,32px)}
.prog{background:var(--paper);color:var(--ink);padding:clamp(28px,3.4vw,48px)}
.prog:nth-child(1){border-top:4px solid var(--lgreen)}
.prog:nth-child(2){border-top:4px solid var(--red)}
.prog-age{font-family:Univers,sans-serif;font-size:var(--fs-num);line-height:1;color:var(--green);margin-bottom:18px;font-variant-numeric:tabular-nums}
.prog:nth-child(2) .prog-age{color:var(--red)}
.prog-age span{font-size:var(--fs-s);margin-left:8px;color:var(--tint);font-family:var(--cjk),Univers,sans-serif}
.prog h3{font-size:var(--fs-h4);margin-bottom:8px;color:var(--green-deep)}
.prog .tint{font-size:var(--fs-xs);margin-bottom:10px}
.prog p:last-child{margin:0;color:var(--tint);font-size:var(--fs-s)}

/* 06 入學 */
.admissions .btn{margin-top:8px}
.steps{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.steps li{display:flex;gap:20px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--line);font-size:var(--fs-h4);color:var(--green-deep)}
.steps span{font-size:var(--fs-xs);color:var(--red);font-variant-numeric:tabular-nums}

/* footer */
.site-footer{background:var(--ink);color:#fff;padding-block:clamp(56px,7vw,96px) calc(28px + env(safe-area-inset-bottom,0px))}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;gap:18px;align-items:center}
.foot-brand img{height:76px;width:auto;background:var(--paper);padding:10px 12px;box-sizing:content-box}
.foot-name{display:flex;flex-direction:column;margin:0}
.foot-name span:first-child{font-family:"TSCK HK",sans-serif;font-weight:500;font-size:var(--fs-m);letter-spacing:.08em}
.foot-name span:last-child{font-family:Univers,sans-serif;font-weight:700;font-size:11px;letter-spacing:.05em;opacity:.85}
.foot-h{font-size:var(--fs-xs);color:var(--lgreen);margin-bottom:12px;letter-spacing:.05em}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:var(--fs-s)}
.site-footer a{text-decoration:none}
.site-footer a:hover,.site-footer a[aria-current=true]{text-decoration:underline;text-underline-offset:4px}
.foot-base{margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18);font-size:var(--fs-xs)}
.foot-base .tint{color:rgba(255,255,255,.65)}

.js .reveal{opacity:0;transform:translateY(24px)}

@media (max-width:980px){
  .grid-2,.sym-grid{grid-template-columns:1fr}
  .traits{grid-template-columns:1fr 1fr;row-gap:36px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
  .sym-stage{top:80px;height:auto;padding-block:16px;background:var(--paper2);z-index:2}
  .sym-figure{height:30svh}
  .sym-marker{display:none}
  .sym-steps li{min-height:0}
}
@media (max-width:860px){
  .menu-btn{display:block}
  .main-nav{position:fixed;inset:80px 0 auto;background:var(--paper);flex-direction:column;align-items:flex-start;gap:22px;padding:24px var(--gutter) 32px;border-bottom:1px solid var(--line);transform:translateY(-8px);opacity:0;visibility:hidden;transition:.3s}
  .main-nav.open{transform:none;opacity:1;visibility:visible}
  .main-nav ul{flex-direction:column;gap:14px}
  .main-nav .lang{flex-direction:row;border-left:0;padding-left:0!important}
  .lockup-en{display:none}
}
@media (max-width:600px){
  :root{--fs-m:1rem}
  .header-row{height:68px}
  .main-nav{inset:68px 0 auto}
  .lockup img{height:44px}
  .hero-box-row,.stack-row{padding-inline:0;padding-bottom:0}
  .hero-box,.stack-box{max-width:none;width:100%}
  .stats{grid-template-columns:1fr}
  .stat,.stat+.stat{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}
  .traits{grid-template-columns:1fr}
  .prog-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .motion-toggle{top:84px;bottom:auto}
  .sym-stage{top:68px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
  .bg-video{transform:none!important}
}

/* 05 課程 grades（取代舊卡片）——大字清單 + 相片 + 說明，三欄 */
.programmes{background:#EAE5D9}
.grades{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:clamp(24px,4vw,64px);align-items:start;position:relative}
.g-list ul{list-style:none;margin:0;padding:0}
.g-tab{all:unset;cursor:pointer;display:block;font-size:clamp(2.5rem,5.4vw,4.5rem);line-height:1.12;font-weight:300;color:#A9A596;transition:color .35s var(--ease)}
body.zh .g-tab{letter-spacing:.08em}
.g-tab:hover{color:var(--green)}
.g-tab[aria-selected=true]{color:var(--ink)}
.g-tab:focus-visible{outline:2px solid var(--green);outline-offset:4px}
.g-panel{display:contents}
.g-panel[hidden]{display:none!important}
.g-panel img{width:100%;aspect-ratio:4/5;object-fit:cover;animation:gIn .7s var(--ease)}
.g-copy{padding-top:6px;animation:gIn .7s .08s var(--ease) both}
.g-age{font-size:var(--fs-xs);color:var(--red);font-weight:400;letter-spacing:.05em;margin-bottom:12px}
.g-copy p:last-child{color:var(--tint);font-size:var(--fs-s);max-width:22em}
@keyframes gIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media (max-width:980px){.grades{grid-template-columns:1fr 1fr}.g-list{grid-column:1/-1}.g-list ul{display:flex;flex-wrap:wrap;gap:0 28px}}
@media (max-width:600px){.grades{grid-template-columns:1fr}.g-tab{font-size:2.25rem}}
@media (prefers-reduced-motion:reduce){.g-panel img,.g-copy{animation:none}}
.stack-media{background:var(--ink)}
.stats.band{background:#EAE5D9;margin-inline:calc(var(--gutter) * -1);padding-inline:var(--gutter);border-top:0}
.stats.band .stat{padding-block:40px}

/* v8：疊層章節文字框移到上方（HK Land 手法）——下一章從底部覆蓋上來時，文字最後才被遮住 */
.stack-panel{align-items:flex-start}
.stack-row{padding-top:calc(110px + env(safe-area-inset-top,0px));padding-bottom:0}
@media (max-width:600px){
  .stack-row{padding-top:calc(68px + env(safe-area-inset-top,0px))}
  .stack-box{padding:22px var(--gutter)}
  /* 課程：HK Land 手機版的直排大字清單 + 箭嘴 */
  .g-list ul{flex-direction:column;gap:0}
  .g-tab{display:flex;justify-content:space-between;align-items:center;width:100%;padding:6px 0;font-size:2.25rem}
  .g-tab::after{content:"";width:10px;height:10px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-4px);transition:transform .3s var(--ease)}
  .g-tab[aria-selected=true]::after{transform:rotate(225deg) translateY(-2px)}
}