/* ==========================================================================
   gatoolee.com — 站点样式
   结构：tokens → base → 顶部栏 → 按钮 → 首页 → 作品集 → 页脚 → 动效 → 响应式
   ========================================================================== */

/* ---------- tokens ---------- */
:root{
  color-scheme: light;
  --bg:#fbfbf9;
  --bg-veil:rgba(251,251,249,.80);
  --surface:#ffffff;
  --surface-2:#f5f4f0;
  --fg:#14151a;
  --fg-soft:#40424b;
  --muted:#6b6d78;
  --faint:#9c9ea8;
  --line:#e6e4df;
  --line-strong:#d7d4cc;
  --accent:#2f6f5e;
  --accent-fg:#ffffff;
  --accent-soft:rgba(47,111,94,.10);
  --accent-line:rgba(47,111,94,.35);
  --shadow-sm:0 1px 2px rgba(18,18,22,.05), 0 2px 10px -6px rgba(18,18,22,.14);
  --shadow-md:0 20px 45px -26px rgba(18,18,22,.45);
  --noise:.03;

  --font-sans:ui-sans-serif,-apple-system,"Segoe UI Variable Text","Segoe UI",system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:26px;
  --maxw:1000px;
  --bar-h:56px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;
    --bg:#0c0d0f;
    --bg-veil:rgba(12,13,15,.82);
    --surface:#141519;
    --surface-2:#1a1b20;
    --fg:#ededf1;
    --fg-soft:#c2c4cd;
    --muted:#94969f;
    --faint:#6d6f79;
    --line:#24262c;
    --line-strong:#33363d;
    --accent:#7cc7ae;
    --accent-fg:#08211a;
    --accent-soft:rgba(124,199,174,.12);
    --accent-line:rgba(124,199,174,.38);
    --shadow-sm:0 1px 2px rgba(0,0,0,.45), 0 2px 12px -8px rgba(0,0,0,.8);
    --shadow-md:0 24px 50px -30px rgba(0,0,0,.9);
    --noise:.045;
  }
}
:root[data-theme="dark"]{
  color-scheme: dark;
  --bg:#0c0d0f;
  --bg-veil:rgba(12,13,15,.82);
  --surface:#141519;
  --surface-2:#1a1b20;
  --fg:#ededf1;
  --fg-soft:#c2c4cd;
  --muted:#94969f;
  --faint:#6d6f79;
  --line:#24262c;
  --line-strong:#33363d;
  --accent:#7cc7ae;
  --accent-fg:#08211a;
  --accent-soft:rgba(124,199,174,.12);
  --accent-line:rgba(124,199,174,.38);
  --shadow-sm:0 1px 2px rgba(0,0,0,.45), 0 2px 12px -8px rgba(0,0,0,.8);
  --shadow-md:0 24px 50px -30px rgba(0,0,0,.9);
  --noise:.045;
}

/* ---------- base ---------- */
*,*::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:400 17px/1.72 var(--font-sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed; inset:-25% -10% auto -10%; height:75vh; z-index:-2; pointer-events:none;
  background:
    radial-gradient(42% 55% at 20% 28%, var(--accent-soft), transparent 72%),
    radial-gradient(38% 50% at 84% 10%, rgba(120,120,220,.08), transparent 72%);
}
body::after{
  content:"";
  position:fixed; inset:0; z-index:-1; pointer-events:none; opacity:var(--noise);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img{ max-width:100%; }
a{ color:inherit; }
::selection{ background:var(--accent-soft); }
:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; border-radius:8px; }

h1,h2,h3{ text-wrap:balance; }

.wrap{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 clamp(18px,4vw,32px); }
.wrap--wide{ --maxw:1180px; }

.skip{
  position:absolute; left:-9999px; top:0; z-index:100;
  padding:10px 16px; border-radius:0 0 10px 0; background:var(--accent); color:var(--accent-fg);
}
.skip:focus{ left:0; }

/* ---------- 顶部栏 ---------- */
.sitebar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  height:var(--bar-h); padding:0 clamp(16px,4vw,32px);
  background:var(--bg-veil);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease, background .3s ease;
}
.sitebar.is-stuck{ border-bottom-color:var(--line); }

.brand{
  display:inline-flex; align-items:center; gap:10px;
  text-decoration:none; color:var(--fg);
  font-weight:600; font-size:15px; letter-spacing:-.01em;
}
.mark{
  width:30px; height:30px; border-radius:9px;
  display:grid; place-items:center;
  background:var(--accent); color:var(--accent-fg);
  font-size:14.5px; font-weight:650;
}
.nav{ display:flex; align-items:center; gap:2px; }
.nav a{
  padding:7px 12px; border-radius:999px;
  color:var(--muted); text-decoration:none;
  font-size:14.5px; transition:color .2s ease, background .2s ease;
}
.nav a:hover{ color:var(--fg); background:var(--surface-2); }
.nav a[aria-current="page"]{ color:var(--fg); background:var(--accent-soft); }

.theme{
  width:34px; height:34px; margin-left:4px; padding:0;
  display:grid; place-items:center; cursor:pointer;
  border:1px solid var(--line); border-radius:999px;
  background:var(--surface); color:var(--fg);
  transition:border-color .2s ease, color .2s ease, transform .2s ease;
}
.theme:hover{ border-color:var(--accent-line); color:var(--accent); }
.theme:active{ transform:scale(.94); }
.theme svg{ width:16px; height:16px; }
.theme .i-moon{ display:none; }
:root[data-theme="dark"] .theme .i-sun{ display:none; }
:root[data-theme="dark"] .theme .i-moon{ display:block; }

/* ---------- 通用元件 ---------- */
.eyebrow{
  display:flex; align-items:center; gap:10px;
  margin:0 0 20px;
  font:600 11px/1 var(--font-mono); letter-spacing:.18em; text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--line-strong); }

.lede{ margin:0; color:var(--fg-soft); font-size:clamp(1rem,.95rem + .3vw,1.12rem); max-width:34em; }

.status{
  display:inline-flex; align-items:center; gap:9px;
  margin-top:26px; padding:6px 14px 6px 12px;
  border:1px solid var(--line); border-radius:999px;
  background:var(--surface); box-shadow:var(--shadow-sm);
  color:var(--muted); font-size:13.5px;
}
.dot{
  width:7px; height:7px; border-radius:50%;
  background:#35b06a; box-shadow:0 0 0 3px rgba(53,176,106,.16);
}
@media (prefers-reduced-motion: no-preference){
  .dot{ animation:pulse 2.8s ease-in-out infinite; }
  @keyframes pulse{
    0%,100%{ box-shadow:0 0 0 3px rgba(53,176,106,.16) }
    50%{ box-shadow:0 0 0 6px rgba(53,176,106,.04) }
  }
}

.actions{ display:flex; flex-wrap:wrap; gap:10px; margin-top:32px; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  height:42px; padding:0 18px;
  border:1px solid var(--line); border-radius:999px;
  background:var(--surface); color:var(--fg);
  box-shadow:var(--shadow-sm);
  font-size:14.5px; font-weight:500; text-decoration:none;
  transition:transform .2s var(--ease), border-color .2s ease, background .2s ease, color .2s ease;
}
.btn:hover{ transform:translateY(-1px); border-color:var(--line-strong); }
.btn svg{ width:15px; height:15px; }
.btn--primary{ background:var(--accent); border-color:var(--accent); color:var(--accent-fg); }
.btn--primary:hover{ filter:brightness(1.05); border-color:var(--accent); }

/* ---------- 首页 ---------- */
.hero{ padding:clamp(44px,8vw,92px) 0 clamp(28px,4vw,44px); }
.display{
  margin:0 0 22px;
  font-size:clamp(2.5rem,1.5rem + 4.6vw,4.4rem);
  line-height:1.05; letter-spacing:-.035em; font-weight:600;
}
.hero .lede{ max-width:36em; }

.section{ margin-top:clamp(48px,7vw,84px); }
.section-head{
  display:flex; align-items:baseline; justify-content:space-between; gap:16px;
  margin:0 0 16px;
}
.section-head h2{
  margin:0; font:600 11.5px/1 var(--font-mono);
  letter-spacing:.17em; text-transform:uppercase; color:var(--muted);
}
.hint{ font-size:13px; color:var(--faint); }

/* 精选卡片（马赛克） */
.feature{
  position:relative; display:block; isolation:isolate;
  aspect-ratio:16/9;
  border:1px solid var(--line); border-radius:var(--r-xl); overflow:hidden;
  background:var(--surface-2); color:#fff; text-decoration:none;
  box-shadow:var(--shadow-md);
}
.cover{
  position:absolute; inset:0; display:block;
  width:100%; height:100%; object-fit:cover; object-position:50% 46%;
  transition:transform 1.2s var(--ease);
}
.feature:hover .cover{ transform:scale(1.035); }
.feature-veil{
  position:absolute; inset:0;
  background:
    linear-gradient(to top, rgba(8,10,12,.94) 0%, rgba(8,10,12,.66) 22%, rgba(8,10,12,.10) 58%, rgba(8,10,12,0) 100%),
    linear-gradient(102deg, rgba(8,10,12,.62) 0%, rgba(8,10,12,.28) 34%, rgba(8,10,12,0) 66%);
}
.feature-copy{
  position:relative; z-index:2;
  display:flex; flex-direction:column; gap:10px; justify-content:flex-end;
  height:100%;
  padding:clamp(24px,3.6vw,40px);
}
.chip{
  align-self:flex-start;
  display:inline-flex; align-items:center; gap:6px;
  padding:5px 11px; border-radius:999px;
  background:rgba(255,255,255,.14); border:1px solid rgba(255,255,255,.24);
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  font:600 10.5px/1 var(--font-mono); letter-spacing:.14em; text-transform:uppercase;
}
.feature-title{
  font-size:clamp(1.5rem,1.1rem + 1.4vw,2.1rem); font-weight:600;
  letter-spacing:-.025em; line-height:1.15;
}
.feature-sub{ font-size:14px; color:rgba(255,255,255,.82); max-width:34em; line-height:1.6; }
.feature-cta{
  position:absolute; z-index:2; top:clamp(20px,3vw,30px); right:clamp(20px,3vw,30px);
  display:inline-flex; align-items:center; gap:7px;
  height:36px; padding:0 15px; border-radius:999px;
  background:rgba(12,14,16,.44); border:1px solid rgba(255,255,255,.30);
  -webkit-backdrop-filter:blur(10px) saturate(1.2); backdrop-filter:blur(10px) saturate(1.2);
  font-size:13.5px; font-weight:500; letter-spacing:.01em;
  transition:background .25s ease, transform .25s var(--ease);
}
.feature-cta svg{ width:14px; height:14px; transition:transform .25s var(--ease); }
.cover-credit{
  position:absolute; z-index:2; right:clamp(20px,3vw,30px); bottom:clamp(20px,3vw,30px);
  font:500 11.5px/1 var(--font-mono); letter-spacing:.1em; color:rgba(255,255,255,.62);
}
.feature:hover .feature-cta{ background:rgba(255,255,255,.16); border-color:rgba(255,255,255,.45); }
.feature:hover .feature-cta svg{ transform:translateX(3px); }

/* 关于 */
.about p{ margin:0 0 16px; max-width:40em; color:var(--fg-soft); }
.about p:last-child{ margin-bottom:0; }
.about strong{ color:var(--fg); font-weight:600; }

/* ---------- 页脚 ---------- */
.sitefoot{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin-top:clamp(60px,9vw,110px); padding:26px 0 40px;
  border-top:1px solid var(--line);
  color:var(--muted); font-size:13.5px;
}
.sitefoot a{ color:var(--muted); text-decoration:none; transition:color .2s ease; }
.sitefoot a:hover{ color:var(--accent); }
.sitefoot .sep{ opacity:.45; margin:0 8px; }

/* ---------- 作品集 ---------- */
.pagehead{ padding:clamp(28px,5vw,52px) 0 clamp(22px,3vw,30px); }
.crumb{
  display:inline-flex; align-items:center; gap:6px; margin-bottom:26px;
  color:var(--muted); text-decoration:none; font-size:13.5px;
  transition:color .2s ease, transform .2s var(--ease);
}
.crumb:hover{ color:var(--accent); }
.pagehead .display{ font-size:clamp(2.2rem,1.4rem + 3.4vw,3.4rem); margin-bottom:16px; }

.filterbar{
  position:sticky; top:var(--bar-h); z-index:30;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:12px 0 14px; margin-bottom:6px;
  background:var(--bg-veil);
  -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
}
.chips{ display:flex; gap:8px; flex-wrap:wrap; }
.chip-btn{
  font:inherit; font-size:13.5px; padding:6px 13px;
  border:1px solid var(--line); border-radius:999px;
  background:var(--surface); color:var(--muted);
  cursor:pointer;
  transition:color .2s ease, border-color .2s ease, background .2s ease, transform .2s var(--ease);
}
.chip-btn:hover{ color:var(--fg); border-color:var(--line-strong); }
.chip-btn[aria-pressed="true"]{
  background:var(--fg); border-color:var(--fg); color:var(--bg);
}
.chip-btn .n{ font:500 10.5px var(--font-mono); opacity:.6; margin-left:5px; }
.count{ font:500 11.5px/1 var(--font-mono); letter-spacing:.08em; color:var(--faint); white-space:nowrap; }

.grid{
  display:grid; gap:clamp(16px,2vw,22px);
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
}
.card{
  position:relative; display:flex; flex-direction:column;
  border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  background:var(--surface); color:inherit; text-decoration:none;
  transition:transform .4s var(--ease), border-color .3s ease, box-shadow .4s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--accent-line);
  box-shadow:var(--shadow-md);
}
.card[hidden]{ display:none; }

.shot{ position:relative; display:block; aspect-ratio:16/10; overflow:hidden; background:var(--surface-2); }
.shot img{
  width:100%; height:100%; object-fit:cover; display:block;
  transition:transform .9s var(--ease);
}
.card:hover .shot img{ transform:scale(1.045); }
.tag{
  position:absolute; top:10px; left:10px;
  padding:4px 9px; border-radius:999px;
  background:rgba(10,12,14,.55); border:1px solid rgba(255,255,255,.22);
  -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px);
  color:#fff; font-size:11px; line-height:1.4;
}
.open{
  position:absolute; right:10px; bottom:10px;
  display:inline-flex; align-items:center; gap:5px;
  padding:5px 10px; border-radius:999px;
  background:rgba(255,255,255,.94); color:#14151a;
  font-size:12px; font-weight:500;
  opacity:0; transform:translateY(6px);
  transition:opacity .3s ease, transform .3s var(--ease);
}
.card:hover .open{ opacity:1; transform:none; }

.card-text{ display:flex; flex-direction:column; gap:2px; padding:14px 15px 16px; }
.card-head{ display:flex; align-items:baseline; justify-content:space-between; gap:10px; }
.card-head b{ font-size:16px; font-weight:600; letter-spacing:-.01em; }
.num{ font:500 10.5px var(--font-mono); color:var(--faint); }
.en{
  font:500 10px var(--font-mono); letter-spacing:.14em; text-transform:uppercase;
  color:var(--muted); opacity:.9;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.desc{ margin-top:7px; font-size:13.5px; line-height:1.6; color:var(--muted); }

.empty{
  padding:60px 0; text-align:center; color:var(--muted); font-size:14.5px;
}

/* ---------- 404 ---------- */
.center-page{
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px;
  min-height:100vh; padding:60px 24px; text-align:center;
}
.center-page h1{ font-size:clamp(1.5rem,1.2rem + 1vw,2rem); letter-spacing:-.02em; }
.center-page p{ margin:0; max-width:34em; color:var(--muted); }
.center-page .code{ color:var(--accent); }
.center-page .actions{ margin-top:12px; }
.code{ font:600 clamp(4rem,12vw,7rem)/1 var(--font-mono); letter-spacing:-.04em; color:var(--accent); margin:0 0 8px; }

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  .js .reveal{ opacity:0; transform:translateY(14px); }
  .js .reveal.in{
    opacity:1; transform:none;
    transition:opacity .7s var(--ease), transform .7s var(--ease);
    transition-delay:calc(var(--i,0) * 45ms);
  }
  @view-transition{ navigation:auto; }
  ::view-transition-old(root){ animation:fadeOut .22s ease both; }
  ::view-transition-new(root){ animation:fadeIn .28s ease both; }
  @keyframes fadeOut{ to{ opacity:0 } }
  @keyframes fadeIn{ from{ opacity:0 } }
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width:640px){
  :root{ --bar-h:52px; }
  body{ font-size:16px; }
  .feature{ aspect-ratio:4/5; }
  .feature-sub{ display:none; }
  .cover-credit{ display:none; }
  .nav a{ padding:7px 9px; font-size:14px; }
  .filterbar{ top:var(--bar-h); }
  .count{ display:none; }
  .grid{ grid-template-columns:1fr; }
}
@media (max-width:380px){
  .nav{ gap:0; }
  .nav a{ padding:6px 7px; font-size:13.5px; }
  .brand{ font-size:14.5px; }
}