/* CoverNice — 开源封面库
   与 theme.css 同一套 token：冷白纸、墨字、单一深青主色。 */

:root{
  --ink:#0F2E3D; --ink70:#4A6B7C; --ink50:#7B93A0;
  --bg:#F7FAFC; --bg2:#EAF3F8; --card:#fff; --paper:#FFF8E6;
  --line:rgba(15,46,61,.10); --line2:rgba(15,46,61,.22);
  --primary:#086288; --primary-d:#06506E; --primary-mid:#4D8DBA; --primary-light:#97D7FF; --cream:#FFEFC4;
  --accent2:#B4533A; --green:#2E8B57;
  --on-bg:var(--primary); --on-bg-hover:var(--primary-d); --on-fg:#fff;
  --pad:clamp(20px,4vw,32px); --max:1240px;
  --sans:"Inter","PingFang SC","Noto Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--primary);color:#fff}
.in{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
body{overflow-x:clip}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .in{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand svg{width:26px;height:26px;flex:none;color:var(--ink)}
.nav-l{display:flex;align-items:center;gap:24px;font-size:14px}
.nav-l a{color:var(--ink70);padding:6px 0;border-bottom:1px solid transparent}
.nav-l a:hover{color:var(--ink)}
.nav-l a[aria-current]{color:var(--ink);border-bottom-color:var(--ink)}
.nav-r{display:flex;align-items:center;gap:10px}
[hidden]{display:none!important}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 16px;border:1px solid var(--line2);background:transparent;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn:hover{background:var(--bg2)}
.btn-ghost{border-color:transparent;color:var(--ink70)}
.btn-ghost:hover{color:var(--ink);background:var(--bg2)}
/* 登录后才出现的「我的封面」：用第二强调色区分于主 / 次操作 */
.btn-mine{background:var(--cream);border-color:#E3CE96;color:var(--ink)}
.btn-mine:hover{background:#F7E2B0;border-color:#D6BE84;color:var(--ink)}
.btn-primary{background:var(--on-bg);border-color:var(--on-bg);color:var(--on-fg)}
.btn-primary:hover{background:var(--on-bg-hover);border-color:var(--on-bg-hover);color:var(--on-fg)}

/* ---------- 账号入口（登录后：头像 + 名称 + 积分 + 下拉） ---------- */
.acct{position:relative}
.acct-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 12px 0 6px;
  border:1px solid #E3CE96;background:var(--cream);color:var(--ink);
  font-family:inherit;font-size:13px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:background .15s,border-color .15s}
.acct-btn:hover{background:#F7E2B0;border-color:#D6BE84}
.acct-btn[aria-expanded="true"]{background:#F7E2B0;border-color:#D6BE84}
.acct-av{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;flex:none;
  background:var(--primary);color:#fff;font-size:11.5px;font-weight:700;letter-spacing:0}
.acct-nm{max-width:132px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acct-cr{display:inline-flex;align-items:baseline;gap:3px;padding-left:8px;border-left:1px solid #E3CE96;
  color:var(--ink70)}
.acct-cr b{font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary)}
.acct-cr em{font-size:11px;font-style:normal;font-weight:500;color:var(--ink50)}

.acct-menu{position:absolute;top:calc(100% + 8px);right:0;z-index:60;min-width:186px;padding:6px;
  background:#fff;border:1px solid var(--line2);box-shadow:0 12px 32px rgba(15,46,61,.12)}
.acct-item{display:flex;align-items:center;width:100%;height:36px;padding:0 10px;border:0;
  background:transparent;color:var(--ink);font-family:inherit;font-size:13px;font-weight:500;
  text-align:left;cursor:pointer;transition:background .12s}
.acct-item:hover{background:var(--bg2)}
.acct-out{color:var(--ink70)}
.acct-out:hover{background:#FBEDE8;color:var(--accent2)}

@media(max-width:900px){.nav .in{height:auto;flex-wrap:wrap;gap:8px 12px;padding:10px var(--pad) 0}.nav-l{order:3;flex:0 0 100%;gap:18px;overflow-x:auto;border-top:1px solid var(--line);padding:9px 0 10px;scrollbar-width:none}.nav-l::-webkit-scrollbar{display:none}}

/* ---------- hero ---------- */
.lib-hero{border-bottom:1px solid var(--line);background:
  radial-gradient(1200px 420px at 78% -10%, rgba(8,98,136,.10), transparent 60%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
.lib-hero-in{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);gap:clamp(28px,5vw,72px);align-items:center;padding:clamp(40px,6vw,76px) 0 clamp(36px,5vw,64px)}
.kicker{margin:0 0 14px;font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--primary)}
.lib-hero h1{margin:0;font-size:clamp(38px,5.2vw,68px);line-height:1.02;letter-spacing:-.04em;font-weight:800}
.lib-lede{margin:18px 0 0;max-width:38ch;color:var(--ink70);font-size:clamp(15px,1.4vw,18px);line-height:1.68}
.lib-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.lib-actions .btn{height:44px;padding:0 20px;font-size:14px}
.lib-stats{display:flex;flex-wrap:wrap;gap:12px 30px;margin:34px 0 0;padding:18px 0 0;border-top:1px solid var(--line)}
.lib-stats div{display:flex;flex-direction:column;gap:2px}
.lib-stats b{font-size:20px;font-weight:800;letter-spacing:-.02em}
.lib-stats span{font-size:11px;letter-spacing:.1em;color:var(--ink50)}
.lib-stats span[data-en]{letter-spacing:.1em}

.lib-stack{position:relative;height:clamp(320px,36vw,430px)}
.lib-stack figure{position:absolute;margin:0;width:46%;max-width:230px;aspect-ratio:2/3;background:var(--bg2);box-shadow:0 30px 50px -30px rgba(8,28,38,.55);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.lib-stack img{width:100%;height:100%;object-fit:cover}
.lib-stack figure:nth-child(1){left:2%;top:12%;transform:rotate(-7deg)}
.lib-stack figure:nth-child(2){left:29%;top:2%;transform:rotate(1.5deg);z-index:2;width:50%;max-width:250px}
.lib-stack figure:nth-child(3){right:1%;top:16%;transform:rotate(8deg)}
.lib-stack:hover figure:nth-child(1){transform:rotate(-9deg) translate(-6px,-4px)}
.lib-stack:hover figure:nth-child(2){transform:rotate(0deg) translateY(-8px)}
.lib-stack:hover figure:nth-child(3){transform:rotate(10deg) translate(6px,-4px)}
@media(max-width:860px){.lib-hero-in{grid-template-columns:1fr}.lib-stack{height:300px;max-width:520px}.lib-hero h1{font-size:clamp(36px,9vw,54px)}}

/* ---------- section head ---------- */
.lib-sec{padding:clamp(42px,6vw,72px) 0}
.lib-sec + .lib-sec{border-top:1px solid var(--line)}
.lib-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.6fr);gap:24px;align-items:end;margin-bottom:26px}
.lib-head h2{margin:6px 0 0;font-size:clamp(26px,3.4vw,40px);line-height:1.1;letter-spacing:-.03em;font-weight:800}
.lib-head p{margin:0;color:var(--ink70);font-size:14px;line-height:1.65;max-width:42ch;justify-self:end}
.eyebrow{margin:0;font-size:10px;font-weight:700;letter-spacing:.18em;color:var(--primary)}
@media(max-width:760px){.lib-head{grid-template-columns:1fr}.lib-head p{justify-self:start}}

/* ---------- filters ---------- */
.lib-filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.lib-filters button{height:34px;padding:0 14px;background:transparent;border:1px solid var(--line2);font-size:12.5px;letter-spacing:.02em;cursor:pointer;transition:.15s}
.lib-filters button:hover{background:var(--bg2)}
.lib-filters button.is-on{background:var(--on-bg);border-color:var(--on-bg);color:var(--on-fg)}
.lib-filters em{font-style:normal;opacity:.55;margin-left:6px;font-size:11px}

/* ---------- grid ---------- */
.lib-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px 22px}
.cover-card{display:flex;flex-direction:column;gap:11px;padding:0;background:none;border:0;text-align:left;cursor:pointer}
.cover-card .shot{position:relative;width:100%;aspect-ratio:2/3;background:var(--bg2);overflow:hidden;box-shadow:0 22px 34px -26px rgba(8,28,38,.55);transition:transform .25s ease,box-shadow .25s ease}
.cover-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.cover-card:hover .shot{transform:translateY(-4px);box-shadow:0 28px 40px -26px rgba(8,28,38,.6)}
.cover-card:hover img{transform:scale(1.025)}
.cover-card .peek{position:absolute;left:10px;bottom:10px;padding:6px 9px;background:rgba(10,34,46,.82);color:#fff;font-size:10px;font-weight:600;letter-spacing:.12em;opacity:0;transform:translateY(4px);transition:.2s}
.cover-card:hover .peek,.cover-card:focus-visible .peek{opacity:1;transform:none}
.cover-card .shot.is-wide img{object-fit:contain;background:#fff;padding:6px 0}
.cover-card .meta{display:flex;flex-direction:column;gap:3px}
.cover-card b{font-size:14px;font-weight:600;letter-spacing:-.01em;line-height:1.35}
.cover-card span{font-size:11.5px;color:var(--ink50);line-height:1.4}
.cover-card .tagline{display:flex;gap:6px;align-items:center;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--primary)}
.cover-card .tagline i{width:14px;height:1px;background:var(--primary);display:block}
@media(max-width:1000px){.lib-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:680px){.lib-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 14px}.cover-card b{font-size:13px}}

/* ---------- recipes ---------- */
.recipe-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.recipe{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);padding:22px;min-height:100%}
.recipe-top{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}
.recipe h3{margin:0;font-size:17px;letter-spacing:-.01em;font-weight:700}
.recipe .num{font-size:11px;letter-spacing:.12em;color:var(--ink50);white-space:nowrap;padding-top:3px}
.recipe .tags{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 14px}
.recipe .tags span{font-size:10.5px;letter-spacing:.04em;color:var(--ink70);border:1px solid var(--line);padding:3px 7px}
.recipe pre{margin:0;padding:14px;background:var(--bg2);border:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;line-height:1.62;white-space:pre-wrap;max-height:168px;overflow:auto;color:#33404C}
.recipe .recipe-zh{margin:12px 0 0;font-size:12.5px;color:var(--ink70);line-height:1.6}
.recipe-actions{display:flex;gap:8px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.mini-btn{height:34px;padding:0 13px;border:1px solid var(--line2);background:transparent;font-size:12px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;transition:.15s}
.mini-btn:hover{background:var(--bg2)}
.mini-btn.solid{background:var(--on-bg);border-color:var(--on-bg);color:var(--on-fg)}
.mini-btn.solid:hover{background:var(--primary);border-color:var(--primary)}
@media(max-width:820px){.recipe-grid{grid-template-columns:1fr}}

/* ---------- sources ---------- */
.source-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:26px}
.source{display:flex;flex-direction:column;gap:9px;border:1px solid var(--line);background:var(--card);padding:22px}
.source h3{margin:0;font-size:15.5px;letter-spacing:-.01em}
.source p{margin:0;font-size:12.5px;line-height:1.65;color:var(--ink70)}
.source .lic{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-weight:700}
.source a{margin-top:auto;padding-top:12px;font-size:11.5px;color:var(--primary);text-decoration:underline;text-underline-offset:3px;word-break:break-all}
.rules{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;padding-top:22px;border-top:1px solid var(--line)}
.rules div{font-size:12px;line-height:1.65;color:var(--ink70)}
.rules b{display:block;color:var(--ink);font-size:12px;margin-bottom:5px}
@media(max-width:900px){.source-grid{grid-template-columns:1fr}.rules{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.rules{grid-template-columns:1fr}}

/* ---------- modal ---------- */
.cover-modal{width:min(1000px,calc(100vw - 32px));max-height:calc(100vh - 40px);padding:0;border:0;background:#fff;color:var(--ink);box-shadow:0 50px 100px -40px rgba(4,18,26,.6);overflow:hidden}
.cover-modal[open]{display:block}
.modal-cover.is-wide img{object-fit:contain;background:#fff;padding:18px}
.cover-modal::backdrop{background:rgba(6,22,30,.58);backdrop-filter:blur(3px)}
.modal-body{display:grid;grid-template-columns:360px minmax(0,1fr);max-height:calc(100vh - 40px)}
.modal-cover{margin:0;background:var(--bg2)}
.modal-cover img{width:100%;height:100%;object-fit:cover}
.modal-info{padding:30px 32px 26px;overflow:auto}
.modal-x{position:absolute;right:10px;top:10px;z-index:3;width:36px;height:36px;border:0;background:rgba(255,255,255,.9);font-size:20px;line-height:1;cursor:pointer;color:var(--ink)}
.modal-x:hover{background:var(--on-bg);color:var(--on-fg)}
.modal-kicker{margin:0 0 8px;font-size:10px;letter-spacing:.16em;font-weight:700;color:var(--primary);text-transform:uppercase}
.modal-info h2{margin:0;font-size:26px;line-height:1.16;letter-spacing:-.03em}
.modal-by{margin:6px 0 0;font-size:12.5px;color:var(--ink50)}
.modal-notes{list-style:none;margin:20px 0 0;padding:0;display:flex;flex-direction:column;gap:9px}
.modal-notes li{position:relative;padding-left:16px;font-size:13px;line-height:1.6;color:var(--ink70)}
.modal-notes li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:1px;background:var(--primary)}
.prompt-box{margin-top:22px;border:1px solid var(--line);background:var(--bg2)}
.prompt-box header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-bottom:1px solid var(--line);font-size:10px;letter-spacing:.12em;font-weight:700;color:var(--ink70);text-transform:uppercase}
.prompt-box pre{margin:0;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;line-height:1.65;white-space:pre-wrap;max-height:190px;overflow:auto;color:#33404C}
.copy-btn{border:1px solid var(--line2);background:#fff;height:26px;padding:0 10px;font-size:10.5px;letter-spacing:.04em;font-weight:600;cursor:pointer;text-transform:none}
.copy-btn:hover{background:var(--on-bg);color:var(--on-fg);border-color:var(--on-bg)}
.copy-btn.is-done{background:var(--primary);border-color:var(--primary);color:#fff}
.modal-zh{margin:12px 0 0;font-size:12px;line-height:1.65;color:var(--ink70)}
.modal-neg{margin:10px 0 0;font-size:11px;line-height:1.55;color:var(--ink50)}
.modal-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.modal-actions .btn{height:40px;font-size:12.5px}
.modal-lic{margin:14px 0 0;font-size:10.5px;line-height:1.55;color:var(--ink50)}
.modal-lic a{text-decoration:underline;text-underline-offset:2px}
@media(max-width:860px){.modal-body{grid-template-columns:1fr;overflow:auto}.modal-cover{max-height:42vh}.modal-cover img{height:42vh}.modal-info{padding:24px 20px 22px;overflow:visible}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:28px 0 36px;background:#fff}
footer .in{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;justify-content:space-between;font-size:12px;color:var(--ink50)}
footer .fl{display:flex;gap:18px}
footer .fl a:hover{color:var(--ink)}

/* ---------- toast ---------- */
.lib-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,14px);background:var(--ink);color:#fff;padding:10px 16px;font-size:12.5px;opacity:0;pointer-events:none;transition:.24s;z-index:90}
.lib-toast.show{opacity:1;transform:translate(-50%,0)}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- 窄屏 ---------- */
@media(max-width:900px){
  .lib-hero-in{grid-template-columns:1fr;gap:26px;padding:34px var(--pad) 30px}
  .lib-stack{height:300px;order:-1}
  .lib-head{grid-template-columns:1fr;align-items:start;gap:10px}
  .lib-head p{justify-self:start;max-width:52ch}
  .recipe-grid{grid-template-columns:1fr}
  .source-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .acct-btn{height:34px;padding:0 9px 0 5px}
  .acct-av{width:24px;height:24px;font-size:11px}
  .acct-nm{max-width:84px;font-size:12px}
  .acct-cr{display:none}
  .nav-r #btnLogin{display:none}
  .nav-r .btn-primary{height:34px;font-size:12px;padding:0 12px}
  .lib-hero h1{font-size:clamp(32px,9vw,44px)}
  .lib-stack{height:290px;margin-bottom:10px}
  .lib-stats{gap:10px 22px}
  .lib-stats b{font-size:17px}
  .lib-sec{padding:36px 0}
  footer .in{gap:12px 18px}
  footer .fl{flex-wrap:wrap;gap:12px}
}

/* ===== 生成样张（samples） ===== */
.sample-card .shot .badge{position:absolute;top:10px;right:10px;z-index:2;padding:5px 8px;background:rgba(9,31,42,.84);color:#fff;font-size:9px;font-weight:700;letter-spacing:.16em}
.sample-card .meta b{font-size:14px}
.sample-foot{margin:28px 0 0;font-size:12px;line-height:1.72;color:var(--ink50);max-width:820px}
.sample-modal{width:min(1080px,calc(100vw - 32px))}
.sample-modal .modal-body{grid-template-columns:410px minmax(0,1fr)}
.sample-modal .prompt-box pre{max-height:340px}
.sample-pipeline{margin:10px 0 0;font-size:11px;line-height:1.6;color:var(--ink50)}
@media(max-width:860px){.sample-modal .modal-body{grid-template-columns:1fr}}


/* 键盘焦点：用主色细环，不要 Chrome 默认蓝 */
:focus-visible{outline:2px solid rgba(8,98,136,.55);outline-offset:2px}