/* ============================================================
   jacklok.com — 深色 + 冷藍（取樣自頭像高光 #389AFF）
   ============================================================ */

:root{
  --bg:#08090b;
  --bg-elev:#0e1116;
  --card:rgba(255,255,255,.035);
  --card-hover:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);

  --fg:#f2f4f8;
  --fg-dim:#a8b0bd;
  --fg-mute:#6e7684;

  --accent:#389aff;
  --accent-soft:#7cc0ff;
  --accent-deep:#1b5fb8;
  --accent-glow:rgba(56,154,255,.22);

  --maxw:940px;
  --r:16px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }

body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,"PingFang TC","Hiragino Sans TC","Microsoft JhengHei","Noto Sans TC",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  min-height:100vh;
}

/* 標題字體：英文 Space Grotesk + 中文 Noto Sans TC（子集化） */
.display{
  font-family:"Space Grotesk","Noto Sans TC",-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.25;
}

a{color:inherit;text-decoration:none}

img{max-width:100%;display:block}

/* ---------- 背景光暈：兩團緩慢流動的藍 ---------- */
.aura{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  overflow:hidden;
}
.aura::before,.aura::after{
  content:"";
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  will-change:transform;
}
.aura::before{
  width:60vmax;height:60vmax;
  top:-22vmax;right:-16vmax;
  background:radial-gradient(circle,rgba(56,154,255,.20),transparent 68%);
  animation:drift-a 34s var(--ease) infinite alternate;
}
.aura::after{
  width:46vmax;height:46vmax;
  bottom:-18vmax;left:-14vmax;
  background:radial-gradient(circle,rgba(27,95,184,.18),transparent 70%);
  animation:drift-b 44s var(--ease) infinite alternate;
}
@keyframes drift-a{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(-7vmax,9vmax,0) scale(1.14)}
}
@keyframes drift-b{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(8vmax,-7vmax,0) scale(1.2)}
}

/* 細微顆粒，避免大面積漸層產生色帶 */
.grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  opacity:.032;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 版面 ---------- */
.wrap{
  position:relative;
  z-index:2;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px 96px;
}

section{ padding:56px 0; scroll-margin-top:80px }

.sec-title{
  font-size:.75rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--accent);
  margin:0 0 20px;
  font-weight:600;
  display:flex;align-items:center;gap:12px;
}
.sec-title::after{
  content:"";flex:1;height:1px;
  background:linear-gradient(90deg,var(--line-strong),transparent);
}

/* ---------- 語言切換 ---------- */
.lang{
  position:fixed;
  top:18px;right:18px;
  z-index:30;
  display:flex;
  gap:2px;
  padding:3px;
  background:rgba(14,17,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:999px;
}
.lang a{
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.06em;
  padding:6px 14px;
  border-radius:999px;
  color:var(--fg-mute);
  transition:color .2s,background .2s;
}
.lang a:hover{color:var(--fg)}
.lang a[aria-current="true"]{
  background:var(--accent);
  color:#04070d;
}

/* ---------- Hero ---------- */
.hero{
  padding:clamp(88px,15vh,140px) 0 48px;
  text-align:center;
}

.avatar-wrap{
  position:relative;
  width:clamp(124px,26vw,164px);
  aspect-ratio:1;
  margin:0 auto 30px;
}
.avatar-wrap::after{           /* 藍色呼吸光環 */
  content:"";
  position:absolute;inset:-16%;
  border-radius:50%;
  background:radial-gradient(circle,var(--accent-glow),transparent 62%);
  animation:halo 5.5s ease-in-out infinite;
  z-index:-1;
}
@keyframes halo{
  0%,100%{opacity:.55;transform:scale(.94)}
  50%{opacity:1;transform:scale(1.06)}
}
.avatar{
  width:100%;height:100%;
  border-radius:50%;
  object-fit:cover;
  border:1px solid rgba(56,154,255,.34);
  box-shadow:0 0 0 6px rgba(56,154,255,.05),0 22px 60px -18px rgba(0,0,0,.9);
}

.name{
  font-size:clamp(2.6rem,9vw,4.1rem);
  margin:0 0 14px;
}
/* 漸層必須套在每個字上：逐字動畫會把文字拆成 <span>，
   若漸層只在父層，子元素沒有自己的背景就會整片透明。 */
.name,.name .reveal-char{
  background:linear-gradient(180deg,#fff 32%,#9fb4cc);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
}

.tagline{
  font-family:"Space Grotesk","Noto Sans TC",-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
  font-size:clamp(.86rem,2.4vw,1rem);
  color:var(--fg-dim);
  margin:0 auto 32px;
  max-width:34em;
  font-weight:500;
}
.tagline .sep{color:var(--accent);margin:0 .5em;opacity:.75}

.motto{
  display:inline-block;
  max-width:30em;
  margin:0;
  padding:20px 26px;
  font-size:clamp(.95rem,2.6vw,1.13rem);
  line-height:1.7;
  color:var(--fg);
  border:1px solid var(--line);
  border-left:2px solid var(--accent);
  border-radius:4px var(--r) var(--r) 4px;
  background:linear-gradient(100deg,rgba(56,154,255,.09),rgba(255,255,255,.015));
  text-align:left;
}

/* ---------- 逐字浮現 ---------- */
.reveal-char{
  display:inline-block;
  opacity:0;
  transform:translateY(.42em);
  animation:charIn .62s var(--ease) forwards;
}
@keyframes charIn{to{opacity:1;transform:none}}

/* ---------- 進場（IntersectionObserver 加 .in） ---------- */
.rise{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .72s var(--ease),transform .72s var(--ease);
}
.rise.in{opacity:1;transform:none}

/* ---------- 文字區 ---------- */
.prose p{
  margin:0 0 16px;
  color:var(--fg-dim);
  max-width:62ch;
  font-size:1rem;
}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--fg);font-weight:600}

.brandline{
  font-size:clamp(1.15rem,3.4vw,1.5rem);
  margin:0 0 18px;
  color:var(--fg);
}
.brandline em{
  font-style:normal;
  color:var(--accent);
}

/* ---------- 影片 ---------- */
.videos{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(250px,1fr));
  gap:18px;
}
.video{
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  background:var(--card);
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.video:hover{
  border-color:rgba(56,154,255,.45);
  transform:translateY(-4px);
  box-shadow:0 18px 40px -22px rgba(0,0,0,.9);
}
.video img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:var(--bg-elev);
}
.video .meta{padding:14px 16px 16px}
.video h3{
  font-size:.92rem;
  font-weight:600;
  line-height:1.5;
  margin:0 0 6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.video time{font-size:.75rem;color:var(--fg-mute)}

/* ---------- 連結 ---------- */
.links{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:14px;
}
.link{
  display:flex;
  align-items:center;
  gap:15px;
  padding:17px 20px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:var(--card);
  transition:border-color .28s var(--ease),background .28s var(--ease),transform .28s var(--ease);
}
.link:hover{
  border-color:rgba(56,154,255,.5);
  background:var(--card-hover);
  transform:translateY(-3px);
}
.link .ico{
  flex:0 0 40px;height:40px;
  display:grid;place-items:center;
  border-radius:11px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:background .28s,border-color .28s;
}
.link:hover .ico{
  background:rgba(56,154,255,.14);
  border-color:rgba(56,154,255,.32);
}
.link svg{width:19px;height:19px;fill:currentColor}
.link .txt{min-width:0}
.link .t{display:block;font-weight:600;font-size:.95rem;line-height:1.4}
.link .s{display:block;font-size:.78rem;color:var(--fg-mute);line-height:1.4}
.link .arrow{
  margin-left:auto;
  color:var(--fg-mute);
  transition:transform .28s var(--ease),color .28s;
  flex:0 0 auto;
}
.link:hover .arrow{transform:translateX(4px);color:var(--accent)}

.links-minor{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 15px;
  font-size:.83rem;
  color:var(--fg-dim);
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--card);
  transition:color .25s,border-color .25s,background .25s;
}
.chip:hover{color:var(--fg);border-color:rgba(56,154,255,.4);background:var(--card-hover)}
.chip svg{width:15px;height:15px;fill:currentColor}

/* ---------- 按鈕 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 24px;
  border-radius:999px;
  font-weight:600;
  font-size:.92rem;
  border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#fff;
  box-shadow:0 10px 30px -12px rgba(56,154,255,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(56,154,255,.9)}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--fg);
  background:var(--card);
}
.btn-ghost:hover{border-color:rgba(56,154,255,.5);background:var(--card-hover);transform:translateY(-2px)}
.btn svg{width:17px;height:17px;fill:currentColor}

/* ---------- 合作邀約 ---------- */
.cta{
  border:1px solid var(--line);
  border-radius:calc(var(--r) + 6px);
  padding:clamp(28px,5vw,44px);
  background:
    radial-gradient(120% 130% at 8% 0%,rgba(56,154,255,.11),transparent 58%),
    var(--card);
}
.cta h2{
  font-size:clamp(1.4rem,4vw,1.9rem);
  margin:0 0 12px;
}
.cta p{color:var(--fg-dim);margin:0 0 26px;max-width:48ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- 頁尾 ---------- */
footer{
  position:relative;z-index:2;
  border-top:1px solid var(--line);
  padding:34px 24px 44px;
  max-width:var(--maxw);
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  align-items:center;
  justify-content:space-between;
}
.qr{
  display:flex;align-items:center;gap:13px;
  color:var(--fg-mute);
  font-size:.76rem;
  line-height:1.5;
}
.qr .box{
  width:60px;height:60px;
  padding:7px;
  border:1px solid var(--line);
  border-radius:10px;
  background:rgba(255,255,255,.03);
}
.qr img{width:100%;height:100%}
.copy{font-size:.76rem;color:var(--fg-mute)}

/* ---------- 無障礙 ---------- */
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 尊重系統的減少動態設定 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .rise{opacity:1;transform:none}
  .reveal-char{opacity:1;transform:none}
}

@media (max-width:560px){
  .wrap{padding:0 20px 72px}
  .tagline{font-size:.8rem;letter-spacing:0}
  .tagline .sep{margin:0 .32em}
  .motto{padding:17px 20px}
  section{padding:44px 0}
  footer{padding:30px 20px 40px;justify-content:center;text-align:center}
}