:root{--panel:rgba(255,255,255,.84);--panel-strong:#ffffff;--panel-soft:#f8fbff;--line-strong:rgba(37,99,235,.24);--accent-2:#0e7c86;--accent-3:#138a92;--grad:linear-gradient(135deg,#0b6e75 0%,#0b6e75 45%,#0e7c86 100%);--grad-soft:linear-gradient(135deg,rgba(37,99,235,.10),rgba(124,58,237,.10));--input:#ffffff;--input-line:rgba(148,163,184,.24);--focus:rgba(37,99,235,.15);--chip:rgba(37,99,235,.08);--chip-text:#095a60;--glow:0 18px 40px rgba(37,99,235,.20);--radius-xl:34px;--radius-md:20px;--header-offset:84px}
html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],html[data-theme="dark"],.tool-app html.tool-dark,.tool-app body.tool-dark{color-scheme:dark;--bg:#07111f;--bg-2:#0a1528;--panel:rgba(11,19,36,.82);--panel-strong:rgba(10,17,31,.96);--panel-soft:rgba(255,255,255,.04);--text:#e8eefc;--muted:#8aa19f;--muted-2:#c6d4d2;--line:rgba(148,163,184,.12);--line-strong:rgba(96,165,250,.24);--shadow:0 28px 72px rgba(2,6,23,.34);--shadow-soft:0 12px 30px rgba(2,6,23,.22);--input:rgba(255,255,255,.045);--input-line:rgba(148,163,184,.14);--focus:rgba(96,165,250,.14);--chip:rgba(96,165,250,.10);--chip-text:#d4ecea;--hero-bg:radial-gradient(circle at 0% 0%, rgba(37,99,235,.16), transparent 30%),
        radial-gradient(circle at 100% 100%, rgba(124,58,237,.14), transparent 34%),
        linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.015));--glow:0 20px 48px rgba(37,99,235,.22)}
.tool-app *{box-sizing:border-box}
.tool-app img{max-width:100%}
.tool-app button,.tool-app input,.tool-app select{font:inherit}
.tool-app button{cursor:pointer;-webkit-tap-highlight-color:transparent}
.tool-app a{text-decoration:none;color:inherit}
.page{width:min(1440px,calc(100% - 24px));margin:24px auto 40px}
.hero{position:relative;overflow:hidden;border-radius:40px;border:1px solid var(--line);background:var(--hero-bg);box-shadow:var(--shadow);padding:0;isolation:isolate}
.hero::before,.hero::after{content:"";position:absolute;border-radius:999px;filter:blur(30px);pointer-events:none;z-index:0;animation:floaty 10s ease-in-out infinite}
.hero::before{width:240px;height:240px;left:-70px;top:-60px;background:rgba(37,99,235,.16)}
.hero::after{width:280px;height:280px;right:-80px;bottom:-90px;background:rgba(124,58,237,.16);animation-delay:-4s}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.35fr) 380px;gap:22px;padding:30px}
.hero-badge{display:inline-flex;align-items:center;gap:10px;min-height:42px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.42);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--accent);font-size:.84rem;font-weight:900;letter-spacing:.03em;margin-bottom:16px}
.hero-title{margin:0;font-size:clamp(2.3rem,4vw,4.3rem);line-height:.98;letter-spacing:-.06em;font-weight:900;background:linear-gradient(90deg,#0b6e75 0%,#0b6e75 35%,#0e7c86 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{margin:16px 0 0;max-width:820px;color:var(--muted);font-size:1.02rem;line-height:1.9}
.hero-stats{margin-top:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat-card{min-height:104px;border-radius:24px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-soft);padding:16px;display:flex;flex-direction:column;justify-content:space-between;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:.22s ease}
.stat-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 18px 34px rgba(37,99,235,.10)}
.stat-card small{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:800}
.stat-card strong{color:var(--text);font-size:1.06rem;line-height:1.35;word-break:break-word}
.hero-side{display:grid;gap:14px;align-content:start}
.hero-panel{border-radius:28px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-soft);padding:18px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.hero-panel small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:900;margin-bottom:8px}
.hero-panel strong{display:block;color:var(--text);font-size:1.22rem;line-height:1.3;word-break:break-word}
.hero-panel p{margin:8px 0 0;color:var(--muted);line-height:1.75;font-size:.9rem}
.shell{margin-top:20px;display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;align-items:start}
.main{min-width:0;display:grid;gap:18px}
.side{min-width:0;display:grid;gap:18px;position:sticky;top:var(--header-offset)}
.surface{border-radius:32px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);overflow:hidden}
.surface-head{padding:20px 22px 16px;border-bottom:1px solid var(--line);display:flex;gap:12px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;background:linear-gradient(180deg, rgba(37,99,235,.05), transparent)}
.surface-head h2{margin:0;font-size:1.15rem;letter-spacing:-.02em}
.surface-head p{margin:6px 0 0;max-width:760px;color:var(--muted);line-height:1.75;font-size:.94rem}
.ready-pill{min-height:42px;padding:0 14px;border-radius:999px;border:1px solid var(--line);display:inline-flex;align-items:center;gap:8px;background:var(--panel-soft);color:var(--text);font-size:.82rem;font-weight:900;white-space:nowrap}
.surface-body{padding:20px}
.category-wrap{position:relative;margin-bottom:18px;padding:6px;border-radius:24px;border:1px solid var(--line);background:var(--panel-soft)}
.category-grid{display:flex;flex-wrap:wrap;gap:8px}
.cat-btn{border:none;min-height:46px;padding:0 15px;border-radius:16px;background:transparent;color:var(--muted-2);font-weight:900;font-size:.88rem;transition:.18s ease}
.cat-btn:hover{background:rgba(37,99,235,.06);color:var(--accent);transform:translateY(-1px)}
.cat-btn.active{color:#fff;background:var(--grad);box-shadow:var(--glow)}
.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.btn,.btn-primary,.btn-danger,.btn-ghost{min-height:46px;padding:0 18px;border-radius:16px;border:1px solid transparent;font-size:.92rem;font-weight:900;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.18s ease}
.btn,.btn-ghost{background:var(--panel-soft);color:var(--muted-2);border-color:var(--line)}
.btn:hover,.btn-ghost:hover{transform:translateY(-1px);border-color:var(--line-strong);color:var(--accent)}
.btn-primary{color:#fff;background:var(--grad);box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 22px 46px rgba(37,99,235,.24)}
.btn-danger{color:#fff;background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 14px 30px rgba(220,38,38,.18)}
.workspace{display:grid;gap:18px}
.converter-grid{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:18px;align-items:stretch}
.converter-card{border-radius:30px;border:1px solid var(--line);background:var(--panel-strong);box-shadow:var(--shadow-soft);padding:18px;position:relative;overflow:hidden}
.converter-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad);opacity:.94}
.card-tag{display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel-soft);color:var(--muted-2);font-size:.76rem;font-weight:900;margin-bottom:14px}
.amount{width:100%;min-height:72px;border-radius:20px;border:1px solid var(--input-line);outline:none;background:var(--input);color:var(--text);padding:18px 16px;font-size:1.38rem;font-weight:900;transition:.18s ease;box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
.amount:focus,.field:focus,.select:focus{border-color:rgba(37,99,235,.36);box-shadow:0 0 0 4px var(--focus);transform:translateY(-1px)}
.field-group{margin-top:12px;display:grid;gap:10px}
.field,.select{width:100%;min-height:54px;border-radius:16px;border:1px solid var(--input-line);outline:none;background:var(--input);color:var(--text);padding:13px 14px;transition:.18s ease}
.meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.chip{min-height:34px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--chip);color:var(--chip-text);font-size:.78rem;font-weight:900}
.swap-wrap{display:grid;place-items:center}
.swap-btn{width:72px;height:72px;border:none;border-radius:24px;color:#fff;background:var(--grad);box-shadow:var(--glow);font-size:1.45rem;font-weight:900;transition:.22s ease;align-self:center}
.swap-btn:hover{transform:rotate(90deg) translateY(-2px);box-shadow:0 22px 42px rgba(37,99,235,.25)}
.result-wrap{border-radius:32px;border:1px solid var(--line);background:radial-gradient(circle at 0% 0%, rgba(37,99,235,.10), transparent 28%),
        radial-gradient(circle at 100% 100%, rgba(124,58,237,.10), transparent 28%),
        var(--panel);box-shadow:var(--shadow-soft);padding:22px;position:relative;overflow:hidden}
.result-wrap::after{content:"";position:absolute;right:-70px;top:-70px;width:200px;height:200px;border-radius:999px;background:rgba(37,99,235,.08);filter:blur(18px);pointer-events:none}
.result-top{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
.result-label{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.18);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--muted-2);font-size:.78rem;font-weight:900;margin-bottom:10px}
.result-main{margin:0;font-size:clamp(2.1rem,4.4vw,4rem);line-height:1;letter-spacing:-.06em;font-weight:900;color:var(--text);word-break:break-word}
.result-sub{margin-top:10px;color:var(--muted);line-height:1.8;font-size:.96rem}
.result-stats{margin-top:18px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.mini-stat{border-radius:22px;border:1px solid var(--line);background:var(--panel-strong);padding:14px;box-shadow:var(--shadow-soft)}
.mini-stat small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.68rem;font-weight:900;margin-bottom:8px}
.mini-stat strong{display:block;color:var(--text);font-size:1rem;line-height:1.45;word-break:break-word}
.formula{margin-top:16px;border-radius:22px;border:1px dashed var(--line);background:var(--panel-soft);padding:16px}
.formula strong{display:block;font-size:1rem;margin-bottom:8px}
.formula p{margin:0;color:var(--muted);line-height:1.8;font-size:.93rem}
.section-card{border-radius:30px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-soft);padding:20px}
.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.section-head h3{margin:0;font-size:1.04rem}
.section-head p{margin:6px 0 0;color:var(--muted);line-height:1.75;font-size:.9rem}
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.quick-btn{min-height:58px;border-radius:18px;border:1px solid var(--line);background:var(--panel-strong);color:var(--muted-2);padding:10px 14px;text-align:left;font-weight:900;line-height:1.4;transition:.18s ease;box-shadow:var(--shadow-soft)}
.quick-btn:hover{transform:translateY(-2px);border-color:var(--line-strong);color:var(--accent);box-shadow:0 16px 30px rgba(37,99,235,.10)}
.tips-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.tip-card{border-radius:28px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-soft);padding:20px}
.tip-card h3{margin:0 0 8px;font-size:1rem}
.tip-card p{margin:0;color:var(--muted);line-height:1.85;font-size:.92rem}
.shortcut{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-top:1px solid var(--line)}
.shortcut:first-of-type{border-top:none;padding-top:0}
.kbd{min-height:34px;padding:0 10px;border-radius:12px;border:1px solid var(--line);background:var(--panel-soft);color:var(--muted-2);font-size:.78rem;font-weight:900;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;box-shadow:inset 0 -2px 0 rgba(0,0,0,.05)}
.side-card{border-radius:30px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);padding:18px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.side-card small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:900;margin-bottom:8px}
.side-card strong{display:block;font-size:1.05rem;line-height:1.42}
.side-card p{margin:8px 0 0;color:var(--muted);line-height:1.75;font-size:.9rem}
.history-list{display:grid;gap:10px;max-height:420px;overflow:auto;padding-right:2px}
.history-item{border-radius:18px;border:1px solid var(--line);background:var(--panel-strong);padding:12px 13px;font-size:.92rem;line-height:1.55;color:var(--text);box-shadow:var(--shadow-soft)}
.empty{border-radius:18px;border:1px dashed var(--line);background:var(--panel-soft);color:var(--muted);text-align:center;line-height:1.8;padding:18px;font-size:.9rem}
.side-mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.side-mini{border-radius:18px;border:1px solid var(--line);background:var(--panel-strong);padding:12px;box-shadow:var(--shadow-soft)}
.side-mini span{display:block;color:var(--muted);font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;font-weight:900;margin-bottom:6px}
.side-mini strong{display:block;font-size:.95rem;line-height:1.42}
@keyframes floaty{
      0%,100%{transform:translateY(0) translateX(0) scale(1)}
      50%{transform:translateY(10px) translateX(8px) scale(1.04)}
    }
@media (max-width:1240px){
.hero-inner,.shell{grid-template-columns:1fr}
.side{position:static;top:auto}
}
@media (max-width:980px){
.hero-stats,.result-stats,.tips-grid{grid-template-columns:1fr 1fr}
.converter-grid{grid-template-columns:1fr}
.swap-wrap{order:2}
.swap-btn{width:100%;height:54px;border-radius:18px}
}
@media (max-width:680px){
.page{width:min(100% - 12px, 100%);margin:14px auto 24px}
.hero-inner{padding:18px}
.hero-stats,.quick-grid,.tips-grid,.result-stats,.side-mini-grid{grid-template-columns:1fr}
.surface-head,.surface-body,.section-card,.side-card{padding:16px}
.hero-title{font-size:2.2rem}
.converter-card{padding:16px}
.result-main{font-size:2.15rem}
.action-row{display:grid;grid-template-columns:1fr 1fr}
.action-row > *{width:100%}
}
@media (max-width:460px){
.action-row{grid-template-columns:1fr}
.cat-btn{width:100%;justify-content:center}
}

/* page overrides */
.tool-app .surface,.tool-app .section-card,.tool-app .tip-card,.tool-app .side-card{box-shadow:none;border-color:var(--zl-line);background:var(--zl-surface);backdrop-filter:none}
.tool-app .side{position:static}
.tool-app .cat-btn{border-radius:999px;font-family:var(--zl-font-head);font-weight:500;min-height:44px}
.tool-app .cat-btn:hover{transform:none;background:var(--zl-surface-2);color:var(--zl-ink)}
.tool-app .cat-btn.active{background:var(--zl-accent);color:var(--zl-accent-ink);box-shadow:none}
.tool-app .btn{border-radius:999px;background:var(--zl-surface);color:var(--zl-ink);border:1.5px solid var(--zl-line-2);font:500 14.5px var(--zl-font-head);box-shadow:none}
.tool-app .btn:hover{border-color:var(--zl-accent);transform:none}
.tool-app .btn-danger{border-radius:999px;background:var(--zl-surface);color:var(--zl-ink);border:1.5px solid var(--zl-line-2);font:500 14.5px var(--zl-font-head);box-shadow:none}
.tool-app .btn-danger:hover{border-color:var(--zl-accent)}
.tool-app .amount{border-radius:14px;border:1.5px solid var(--zl-line-2);background:var(--zl-surface);color:var(--zl-ink);font-family:var(--zl-font-head);font-weight:600}
.tool-app .amount[readonly]{background:var(--zl-tint)}
.tool-app .field,.tool-app .select{border-radius:12px;border:1.5px solid var(--zl-line-2);background-color:var(--zl-surface);color:var(--zl-ink);font-size:16px}
.tool-app .swap-btn{background:var(--zl-surface);color:var(--zl-ink);border:1.5px solid var(--zl-line-2);box-shadow:none;border-radius:999px}
.tool-app .swap-btn:hover{border-color:var(--zl-accent);transform:none}
.tool-app .result-wrap{background:var(--zl-surface-2);border-color:var(--zl-line);border-radius:18px;box-shadow:none}
.tool-app .converter-card,.tool-app .mini-stat,.tool-app .formula,.tool-app .quick-btn,.tool-app .side-mini,.tool-app .history-item{box-shadow:none;border-color:var(--zl-line)}
.tool-app .converter-card{background:var(--zl-surface-2)}
.tool-app .quick-btn{background:var(--zl-surface);color:var(--zl-ink)}
.tool-app .quick-btn:hover{border-color:var(--zl-accent);transform:none}
.tool-app .category-wrap,.tool-app .category-grid{box-shadow:none}
.tool-app input.amount{width:100%;min-height:64px;padding:14px 16px;font-size:1.3rem}
.tool-app .result-wrap{background-image:none}
.tool-app .result-wrap::before,.tool-app .result-wrap::after{display:none}
.tool-app .mini-stat,.tool-app .side-mini,.tool-app .formula{background:var(--zl-surface)}
@media (max-width:760px){
.tool-app .category-grid{display:flex;flex-wrap:wrap;gap:6px}
.tool-app .cat-btn{width:auto;padding:0 14px}
.tool-app .action-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tool-app .action-row>*{width:100%}
}