/* ============================================================
   AI绘画灵感库 · 黑金高奢视觉体系
   近黑底 + 细线描边 + 微光泽 + 衬线大字
   ============================================================ */
:root{
  --c-primary:#60d26b;
  --c-secondary:#51c26c;
  --c-accent:#65e2d9;
  --c-bg:#0e150f;
  --c-surface:#1a231b;
  --c-surface-2:#141f19;
  --c-surface-3:#202e22;
  --c-text:#eef2ee;
  --c-muted:#98ae9a;
  --c-border:#304032;
  --radius:6px;
  --font-display:'Noto Serif SC','Songti SC',Georgia,'Times New Roman',serif;
  --font-body:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
  --font-mono:ui-monospace,'SF Mono',SFMono-Regular,Menlo,Consolas,'Liberation Mono',monospace;
  --shadow:0 24px 48px rgba(0,0,0,.5);
  --sheen:linear-gradient(120deg,rgba(96,210,107,.14),rgba(101,226,217,.10),rgba(96,210,107,.14));
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 顶部微光泽 */
body::before{
  content:"";
  position:fixed;inset:0 0 auto;height:520px;z-index:0;pointer-events:none;
  background:radial-gradient(120% 100% at 50% -10%,rgba(96,210,107,.10),rgba(101,226,217,.05) 42%,transparent 68%);
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

::selection{background:rgba(96,210,107,.32);color:var(--c-text)}

/* ---------------- 细金线 / 光泽装饰 ---------------- */
.hairline{
  height:1px;border:none;margin:0;
  background:linear-gradient(90deg,transparent,rgba(96,210,107,.55),rgba(101,226,217,.35),rgba(96,210,107,.55),transparent);
}
.ornament{display:flex;align-items:center;gap:14px;color:var(--c-primary);font-size:12px;letter-spacing:.4em;user-select:none}
.ornament::before,.ornament::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,transparent,rgba(96,210,107,.6))}
.ornament::after{background:linear-gradient(270deg,transparent,rgba(96,210,107,.6))}
.ornament--accent{color:var(--c-accent)}
.ornament--accent::before{background:linear-gradient(90deg,transparent,rgba(101,226,217,.6))}
.ornament--accent::after{background:linear-gradient(270deg,transparent,rgba(101,226,217,.6))}

/* ---------------- 顶部导航 ---------------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(14,21,15,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border)}
.topbar::after{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(96,210,107,.5),transparent);margin-top:-1px}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-size:21px;letter-spacing:.06em;color:var(--c-text);white-space:nowrap}
.brand .mark{
  width:34px;height:34px;border:1px solid rgba(96,210,107,.7);border-radius:var(--radius);
  display:grid;place-items:center;font-size:16px;color:var(--c-primary);
  background:linear-gradient(160deg,rgba(96,210,107,.16),rgba(101,226,217,.06));
  box-shadow:inset 0 0 12px rgba(96,210,107,.18);
}
.brand b{font-weight:700;background:linear-gradient(120deg,var(--c-text),var(--c-primary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:6px;margin-left:auto;align-items:center}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:var(--radius);font-size:14px;color:var(--c-muted);
  transition:color .25s;
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:1px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent))}
.nav-search{margin-left:6px;position:relative}
.nav-search input{
  width:210px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);
  color:var(--c-text);padding:9px 14px 9px 36px;font-size:13.5px;outline:none;transition:border-color .25s,box-shadow .25s;
}
.nav-search input::placeholder{color:var(--c-muted)}
.nav-search input:focus{border-color:rgba(96,210,107,.7);box-shadow:0 0 0 3px rgba(96,210,107,.12)}
.nav-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--c-muted)}
.nav-cta{
  margin-left:10px;padding:9px 18px;border-radius:var(--radius);font-size:13.5px;font-weight:600;
  color:var(--c-bg);background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  border:none;letter-spacing:.04em;transition:box-shadow .25s,transform .2s;white-space:nowrap;
}
.nav-cta:hover{box-shadow:0 6px 20px rgba(96,210,107,.4);transform:translateY(-1px)}
.burger{display:none;background:none;border:1px solid var(--c-border);border-radius:var(--radius);color:var(--c-text);width:40px;height:40px;font-size:18px}
.mobile-nav{display:none;flex-direction:column;gap:4px;padding:10px 24px 16px;border-bottom:1px solid var(--c-border);background:var(--c-bg)}
.mobile-nav a{padding:10px 12px;border-radius:var(--radius);color:var(--c-muted);font-size:15px}
.mobile-nav a.active{color:var(--c-primary);background:rgba(96,210,107,.08)}

/* ---------------- 首页 Hero ---------------- */
.hero{padding:84px 0 56px;text-align:center}
.hero .kicker{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.35em;color:var(--c-accent);text-transform:uppercase}
.hero h1{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(38px,6.4vw,72px);line-height:1.18;letter-spacing:.02em;margin:22px auto 0;max-width:900px;
}
.hero h1 em{font-style:normal;background:linear-gradient(115deg,var(--c-primary),var(--c-accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{max-width:640px;margin:24px auto 0;color:var(--c-muted);font-size:16.5px}
.hero .cta-row{display:flex;gap:14px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.hero .stats{display:flex;justify-content:center;gap:0;margin-top:52px;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.hero .stat{flex:1;max-width:240px;padding:22px 10px;text-align:center;position:relative}
.hero .stat + .stat::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:linear-gradient(180deg,transparent,rgba(96,210,107,.5),transparent)}
.hero .stat b{display:block;font-family:var(--font-display);font-size:34px;font-weight:600;color:var(--c-primary);line-height:1.2}
.hero .stat span{font-size:12.5px;color:var(--c-muted);letter-spacing:.2em}
.hero .stat b .plus{color:var(--c-accent)}

.btn{
  display:inline-flex;align-items:center;gap:9px;padding:12px 26px;border-radius:var(--radius);
  font-size:14.5px;font-weight:600;letter-spacing:.05em;border:1px solid transparent;transition:all .25s;
}
.btn-primary{color:var(--c-bg);background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));box-shadow:0 8px 24px rgba(96,210,107,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(96,210,107,.38)}
.btn-ghost{color:var(--c-text);border-color:var(--c-border);background:transparent}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(96,210,107,.05)}
.btn-accent{color:var(--c-bg);background:linear-gradient(135deg,var(--c-accent),var(--c-primary));box-shadow:0 8px 24px rgba(101,226,217,.2)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(101,226,217,.35)}
.btn-sm{padding:7px 14px;font-size:12.5px}

/* ---------------- 筛选栏 ---------------- */
.toolbar{margin:10px 0 30px;padding:18px 20px;border:1px solid var(--c-border);border-radius:var(--radius);background:linear-gradient(160deg,var(--c-surface),var(--c-surface-2))}
.toolbar-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:11px;letter-spacing:.25em;color:var(--c-muted);text-transform:uppercase}
.field select,.field input[type="search"]{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);color:var(--c-text);
  padding:9px 34px 9px 12px;font-size:13.5px;outline:none;min-width:150px;appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--c-muted) 50%),linear-gradient(135deg,var(--c-muted) 50%,transparent 50%);
  background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;
  cursor:pointer;transition:border-color .25s;
}
.field select:focus,.field input:focus{border-color:rgba(96,210,107,.7)}
.field input[type="search"]{min-width:220px;padding-right:12px;appearance:none;background-image:none}
.field select option{background:var(--c-surface);color:var(--c-text)}
.toolbar .spacer{flex:1}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border:1px solid var(--c-border);border-radius:var(--radius);
  background:transparent;color:var(--c-muted);font-size:13px;transition:all .22s;white-space:nowrap;
}
.chip:hover{color:var(--c-text);border-color:var(--c-primary)}
.chip.on{color:var(--c-bg);background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));border-color:transparent;font-weight:600}
.btn-reset{background:none;border:none;color:var(--c-muted);font-size:13px;text-decoration:underline;text-underline-offset:3px}
.btn-reset:hover{color:var(--c-accent)}

/* ---------------- 瀑布流画廊 ---------------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:46px 0 22px;flex-wrap:wrap}
.section-head h2{font-family:var(--font-display);font-size:clamp(24px,3.4vw,34px);font-weight:600;letter-spacing:.03em}
.section-head h2 small{display:block;font-family:var(--font-body);font-size:13px;color:var(--c-muted);font-weight:400;letter-spacing:.12em;margin-top:6px}
.masonry{columns:4;column-gap:20px}
.masonry.two{columns:2}
@media(max-width:1080px){.masonry{columns:3}}
@media(max-width:780px){.masonry{columns:2}}
@media(max-width:520px){.masonry{columns:1}}

/* 卡片 */
.art-card{
  break-inside:avoid;margin:0 0 20px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);
  overflow:hidden;position:relative;transform:translateZ(0);
  transition:transform .35s cubic-bezier(.2,.7,.3,1),border-color .3s,box-shadow .35s;
  animation:cardIn .6s both;
}
.art-card:hover{transform:translateY(-6px);border-color:rgba(96,210,107,.75);box-shadow:var(--shadow),0 0 0 1px rgba(96,210,107,.2)}
/* 光泽扫过 */
.art-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;z-index:2;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.12) 48%,rgba(101,226,217,.10) 52%,transparent 66%);
  transform:translateX(-120%);transition:transform .9s ease,opacity .4s;
}
.art-card:hover::after{transform:translateX(120%);opacity:1}
.art-media{position:relative;overflow:hidden;background:var(--c-surface-2);cursor:pointer}
.art-media img{width:100%;height:auto;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.art-card:hover .art-media img{transform:scale(1.045)}
.art-model{
  position:absolute;top:12px;left:12px;z-index:3;font-size:10.5px;letter-spacing:.14em;padding:5px 10px;
  border-radius:var(--radius);color:var(--c-text);background:rgba(14,21,15,.72);border:1px solid rgba(96,210,107,.45);
  backdrop-filter:blur(6px);
}
.art-like{
  position:absolute;top:12px;right:12px;z-index:3;width:36px;height:36px;border-radius:var(--radius);
  display:grid;place-items:center;background:rgba(14,21,15,.72);border:1px solid rgba(101,226,217,.4);color:var(--c-muted);
  backdrop-filter:blur(6px);transition:all .22s;font-size:15px;
}
.art-like:hover{color:var(--c-accent);border-color:var(--c-accent);transform:scale(1.08)}
.art-like.on{color:var(--c-bg);background:linear-gradient(135deg,var(--c-accent),var(--c-primary));border-color:transparent}
.art-like.on .pulse{animation:pop .35s}
.art-body{padding:16px 16px 14px}
.art-badges{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.badge{font-size:11px;letter-spacing:.08em;padding:4px 9px;border-radius:var(--radius);border:1px solid var(--c-border);color:var(--c-muted)}
.badge.style{color:var(--c-accent);border-color:rgba(101,226,217,.4);background:rgba(101,226,217,.06)}
.badge.theme{color:var(--c-primary);border-color:rgba(96,210,107,.4);background:rgba(96,210,107,.06)}
.art-title{
  font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--c-text);line-height:1.45;letter-spacing:.02em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.art-card:hover .art-title{color:var(--c-primary)}
.art-meta{display:flex;align-items:center;gap:10px;margin-top:12px;padding-top:12px;border-top:1px dashed var(--c-border);font-size:12.5px;color:var(--c-muted)}
.art-meta .avatar{width:26px;height:26px;border-radius:50%;border:1px solid rgba(96,210,107,.5);display:grid;place-items:center;font-size:11px;color:var(--c-primary);background:var(--c-surface-2)}
.art-meta .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.art-meta .stat{margin-left:auto;display:flex;align-items:center;gap:5px;white-space:nowrap}
.art-meta .stat svg{width:13px;height:13px}

@keyframes cardIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
@keyframes pop{0%{transform:scale(1)}45%{transform:scale(1.5)}100%{transform:scale(1)}}

/* ---------------- 加载更多 / 空状态 ---------------- */
.loadmore-wrap{text-align:center;margin:38px 0 10px}
.loadmore-wrap .btn{min-width:220px;justify-content:center}
.empty{padding:70px 20px;text-align:center;color:var(--c-muted)}
.empty .glyph{font-size:42px;color:var(--c-primary);opacity:.7;font-family:var(--font-display)}
.empty h3{font-family:var(--font-display);font-size:20px;color:var(--c-text);margin:14px 0 6px;font-weight:600}
.empty p{font-size:14px}

/* ---------------- 详情页 ---------------- */
.page-head{padding:44px 0 10px}
.crumb{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{opacity:.5}
.detail-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px;padding:26px 0 20px}
@media(max-width:900px){.detail-grid{grid-template-columns:1fr}}
.detail-art{position:sticky;top:90px;align-self:start}
.detail-art .frame{border:1px solid var(--c-border);border-radius:var(--radius);padding:10px;background:var(--c-surface);box-shadow:var(--shadow)}
.detail-art .frame img{border-radius:calc(var(--radius) - 2px);width:100%}
.detail-art .cap{display:flex;justify-content:space-between;margin-top:12px;font-size:12px;color:var(--c-muted);letter-spacing:.1em}
@media(max-width:900px){.detail-art{position:static}}
.detail-info h1{font-family:var(--font-display);font-size:clamp(26px,4vw,40px);font-weight:600;line-height:1.25}
.detail-info .byline{display:flex;align-items:center;gap:10px;margin:14px 0 8px;color:var(--c-muted);font-size:14px;flex-wrap:wrap}
.detail-info .byline .avatar{width:32px;height:32px;border-radius:50%;border:1px solid rgba(96,210,107,.5);display:grid;place-items:center;color:var(--c-primary);font-size:13px;background:var(--c-surface-2)}
.detail-info .byline b{color:var(--c-text);font-weight:600}
.detail-actions{display:flex;gap:12px;margin:20px 0;flex-wrap:wrap}
.detail-desc{color:var(--c-muted);font-size:14.5px;border-left:2px solid rgba(96,210,107,.5);padding-left:16px;margin-bottom:22px}
.block{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:20px;margin-bottom:18px}
.block h3{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:16px;font-weight:600;margin-bottom:14px;color:var(--c-text)}
.block h3 .num{color:var(--c-primary);font-size:13px;letter-spacing:.1em;font-family:var(--font-body)}
.prompt-box{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);padding:16px;
  font-family:var(--font-mono);font-size:13.5px;line-height:1.9;color:#d7e8d9;white-space:pre-wrap;word-break:break-word;position:relative;
}
.prompt-box .copy-fab{position:absolute;top:12px;right:12px;padding:7px 13px;border-radius:var(--radius);border:1px solid var(--c-border);background:var(--c-surface-3);color:var(--c-text);font-size:12px;transition:all .22s}
.prompt-box .copy-fab:hover{border-color:var(--c-primary);color:var(--c-primary)}
.params{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.params .kv{background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);padding:11px 13px}
.params .kv span{display:block;font-size:11px;letter-spacing:.18em;color:var(--c-muted);text-transform:uppercase;margin-bottom:3px}
.params .kv b{font-family:var(--font-mono);font-size:13.5px;font-weight:500;color:var(--c-accent)}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-bottom:60px}
@media(max-width:780px){.related{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.related{grid-template-columns:1fr}}

/* ---------------- 提示词库页 ---------------- */
.ptoolbar{padding:16px 18px;border:1px solid var(--c-border);border-radius:var(--radius);background:linear-gradient(160deg,var(--c-surface),var(--c-surface-2));margin-bottom:26px}
.prompt-list{display:flex;flex-direction:column;gap:16px;padding-bottom:60px}
.prompt-card{
  display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:18px;align-items:start;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:18px;
  transition:border-color .3s,transform .3s,box-shadow .3s;animation:cardIn .5s both;
}
.prompt-card:hover{border-color:rgba(96,210,107,.65);transform:translateY(-3px);box-shadow:0 16px 34px rgba(0,0,0,.4)}
@media(max-width:700px){.prompt-card{grid-template-columns:1fr}.prompt-card .thumb{width:100%!important;height:180px!important}}
.prompt-card .thumb{border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;background:var(--c-surface-2);cursor:pointer}
.prompt-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prompt-card .thumb:hover img{transform:scale(1.06)}
.pc-main .pc-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.pc-main h3{font-family:var(--font-display);font-size:18px;font-weight:600;color:var(--c-text)}
.pc-main h3 a:hover{color:var(--c-primary)}
.pc-text{
  font-family:var(--font-mono);font-size:12.5px;line-height:1.85;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;background:var(--c-bg);
  border:1px solid var(--c-border);border-radius:var(--radius);padding:12px 14px;margin-top:8px;position:relative;
}
.pc-foot{display:flex;align-items:center;gap:12px;margin-top:12px;font-size:12.5px;color:var(--c-muted);flex-wrap:wrap}
.pc-foot .name{display:flex;align-items:center;gap:7px}
.pc-side{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.pc-side .copied{font-size:11.5px;color:var(--c-primary)}
@media(max-width:700px){.pc-side{flex-direction:row;align-items:center;justify-content:flex-start}}

/* ---------------- 提交页 ---------------- */
.submit-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:36px;padding:30px 0 60px}
@media(max-width:920px){.submit-grid{grid-template-columns:1fr}}
.form-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.form-grid{grid-template-columns:1fr}}
.form-item{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.form-item.full{grid-column:1/-1}
.form-item label{font-size:12.5px;color:var(--c-muted);letter-spacing:.06em}
.form-item label i{color:var(--c-accent);font-style:normal;margin-left:3px}
.form-item input,.form-item select,.form-item textarea{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--radius);color:var(--c-text);
  padding:11px 13px;font-size:14px;font-family:var(--font-body);outline:none;transition:border-color .25s,box-shadow .25s;
}
.form-item select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--c-muted) 50%),linear-gradient(135deg,var(--c-muted) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:32px}
.form-item textarea{min-height:120px;resize:vertical;line-height:1.8;font-family:var(--font-mono);font-size:13px}
.form-item input:focus,.form-item select:focus,.form-item textarea:focus{border-color:rgba(96,210,107,.7);box-shadow:0 0 0 3px rgba(96,210,107,.1)}
.upload-box{
  border:1.5px dashed var(--c-border);border-radius:var(--radius);padding:22px;text-align:center;cursor:pointer;
  background:var(--c-bg);transition:all .25s;position:relative;overflow:hidden;min-height:150px;display:grid;place-items:center;
}
.upload-box:hover,.upload-box.drag{border-color:var(--c-primary);background:rgba(96,210,107,.04)}
.upload-box .glyph{font-size:26px;color:var(--c-primary);margin-bottom:6px}
.upload-box p{font-size:13px;color:var(--c-muted)}
.upload-box p b{color:var(--c-text)}
.upload-box .uploaded{position:absolute;inset:0;display:none}
.upload-box.has-img .uploaded{display:block;width:100%;height:100%;object-fit:cover}
.upload-box.has-img .drop-text{display:none}
.preview-panel{position:sticky;top:90px;align-self:start}
@media(max-width:920px){.preview-panel{position:static}}
.preview-panel .cap{font-size:12px;letter-spacing:.22em;color:var(--c-muted);text-transform:uppercase;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.preview-panel .cap::before{content:"";width:26px;height:1px;background:var(--c-primary)}

/* ---------------- Toast ---------------- */
#toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,80px);z-index:200;display:flex;gap:10px;align-items:center;
  background:var(--c-surface-3);border:1px solid rgba(96,210,107,.6);color:var(--c-text);padding:13px 20px;border-radius:var(--radius);
  font-size:14px;box-shadow:var(--shadow);opacity:0;transition:transform .35s cubic-bezier(.2,.8,.3,1.2),opacity .3s;max-width:88vw}
#toast.show{transform:translate(-50%,0);opacity:1}
#toast .t-ic{color:var(--c-primary);font-size:16px}

/* ---------------- Footer ---------------- */
footer{border-top:1px solid var(--c-border);margin-top:20px;background:linear-gradient(180deg,var(--c-bg),#0b110c)}
footer::before{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(96,210,107,.45),transparent);margin-top:-1px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding:48px 0 36px}
@media(max-width:760px){.foot{grid-template-columns:1fr;gap:26px}}
.foot h4{font-family:var(--font-display);font-size:15px;letter-spacing:.14em;margin-bottom:14px;color:var(--c-text);font-weight:600}
.foot p{color:var(--c-muted);font-size:13.5px;max-width:320px}
.foot ul{list-style:none}
.foot ul li{margin-bottom:9px}
.foot ul a{color:var(--c-muted);font-size:13.5px;transition:color .2s}
.foot ul a:hover{color:var(--c-primary)}
.foot-bottom{border-top:1px solid var(--c-border);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--c-muted)}
.foot-bottom .ornament{font-size:10px;letter-spacing:.3em}

/* 通用 */
.section-title{font-family:var(--font-display);font-size:clamp(24px,3.4vw,34px);font-weight:600;margin:18px 0 6px;letter-spacing:.03em}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:300;background:var(--c-primary);color:var(--c-bg);padding:10px 16px;border-radius:var(--radius)}

/* 顶部搜索页内工具条（提交页/提示词页） */
.subhead{padding:34px 0 6px}
.subhead .kicker{color:var(--c-accent);letter-spacing:.3em;font-size:12px}
.subhead h1{font-family:var(--font-display);font-size:clamp(28px,4.4vw,46px);font-weight:600;margin-top:10px}
.subhead p{color:var(--c-muted);margin-top:12px;max-width:620px;font-size:15px}