/* ============================================================
   trnapi · 营销站共享设计系统  (暖白 + Claude 橙)
   令牌与 new-api 控制台 relay-theme.css 对齐
   ============================================================ */
:root{
  --bg:#FAF9F5;            /* warm white */
  --bg-soft:#F2F0E8;
  --surface:#FFFFFF;
  --surface-2:#F6F4ED;
  --line:rgba(40,36,28,.10);
  --line-2:rgba(40,36,28,.18);
  --text:#22201B;          /* warm near-black */
  --text-dim:#6c6a61;
  --text-mute:#9a978c;
  --accent:#D97757;        /* Claude clay orange */
  --accent-deep:#bd5d3f;
  --accent-soft:rgba(217,119,87,.12);
  --accent-glow:rgba(217,119,87,.30);
  --green:#3fb27a;
  --amber:#b07a16;
  --radius:16px;
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;
  font-feature-settings:'cv11','ss01';-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5}
a{color:inherit;text-decoration:none}
.serif{font-family:'Instrument Serif',serif;font-weight:400}
.mono{font-family:'JetBrains Mono',monospace}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.em{font-family:'Instrument Serif',serif;font-style:italic;font-weight:400;color:var(--accent)}

/* ---------- atmosphere ---------- */
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.025;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
.glow{position:fixed;pointer-events:none;z-index:0;border-radius:50%;filter:blur(90px)}
.glow.a{width:640px;height:640px;top:-260px;left:50%;transform:translateX(-55%);
  background:radial-gradient(circle,var(--accent-glow),transparent 65%);opacity:.7}
.glow.b{width:500px;height:500px;top:540px;right:-180px;
  background:radial-gradient(circle,rgba(217,119,87,.18),transparent 70%);opacity:.8}
.gridbg{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.6;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 50% at 50% 0%,#000 25%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 80% 50% at 50% 0%,#000 25%,transparent 70%);}

/* ---------- nav ---------- */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(250,249,245,.72);border-bottom:1px solid var(--line)}
nav{display:flex;align-items:center;gap:36px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:-.03em}
.logo .dot{width:25px;height:25px;border-radius:6px;background:url(/logo.png) center/contain no-repeat;box-shadow:0 1px 6px rgba(0,0,0,.14)}
.logo .dim{color:var(--text-mute);font-weight:400}
.navlinks{display:flex;gap:30px;margin-left:8px}
.navlinks a{font-size:14.5px;color:var(--text-dim);transition:color .25s var(--ease);position:relative}
.navlinks a:hover,.navlinks a.active{color:var(--text)}
.navlinks a::after{content:"";position:absolute;left:0;bottom:-7px;width:0;height:1.5px;background:var(--accent);transition:width .3s var(--ease)}
.navlinks a:hover::after,.navlinks a.active::after{width:100%}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;font-weight:500;font-size:14px;
  padding:10px 18px;cursor:pointer;transition:.25s var(--ease);border:1px solid transparent}
.btn.ghost{color:var(--text-dim)}
.btn.ghost:hover{color:var(--text)}
.btn.line{border-color:var(--line-2);color:var(--text);background:var(--surface)}
.btn.line:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-deep)}
.btn.solid{background:var(--accent);color:#fff;font-weight:600;box-shadow:0 6px 20px -8px var(--accent-glow)}
.btn.solid:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:0 10px 28px -8px var(--accent-glow)}

/* ---------- generic section head ---------- */
section{position:relative;z-index:2}
.sec-head{margin-bottom:46px}
.sec-tag{font-size:12.5px;color:var(--accent-deep);letter-spacing:.16em;text-transform:uppercase;font-weight:600;display:flex;align-items:center;gap:10px}
.sec-tag::before{content:"";width:26px;height:1.5px;background:var(--accent)}
.sec-head h2{font-size:clamp(28px,3.4vw,42px);letter-spacing:-.03em;font-weight:700;margin-top:16px;line-height:1.1}
.sec-head p{color:var(--text-dim);font-size:16px;margin-top:14px;max-width:560px}

/* ---------- page hero (subpages) ---------- */
.subhero{position:relative;z-index:2;padding:78px 0 30px}
.subhero .eyebrow{font-size:12.5px;color:var(--accent-deep);letter-spacing:.16em;text-transform:uppercase;font-weight:600;display:inline-flex;align-items:center;gap:10px}
.subhero .eyebrow::before{content:"";width:26px;height:1.5px;background:var(--accent)}
.subhero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.05;letter-spacing:-.03em;font-weight:700;margin-top:18px}
.subhero p{margin-top:20px;font-size:17px;color:var(--text-dim);max-width:600px;line-height:1.65}
.subhero .hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.crumb{font-size:13px;color:var(--text-mute);margin-bottom:18px}
.crumb a:hover{color:var(--accent-deep)}

/* ---------- pill / stats ---------- */
.pill{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--text-dim);
  border:1px solid var(--line);background:var(--surface);border-radius:100px;padding:6px 14px 6px 10px;box-shadow:0 1px 2px rgba(40,36,28,.04)}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(63,178,122,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(63,178,122,.5)}70%{box-shadow:0 0 0 7px rgba(63,178,122,0)}100%{box-shadow:0 0 0 0 rgba(63,178,122,0)}}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-cta .btn{padding:13px 24px;font-size:15px}
.stats-row{display:flex;gap:38px;flex-wrap:wrap}
.stats-row .v{font-size:26px;font-weight:700;letter-spacing:-.02em}
.stats-row .v b{color:var(--accent)}
.stats-row .k{font-size:12.5px;color:var(--text-mute);margin-top:3px}

/* ---------- terminal card ---------- */
.term{background:#16140f;border:1px solid rgba(40,36,28,.14);border-radius:var(--radius);overflow:hidden;box-shadow:0 30px 60px -28px rgba(40,30,18,.4)}
.term-bar{display:flex;align-items:center;gap:7px;padding:13px 16px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.02)}
.term-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.term-bar i:nth-child(1){background:#ff5f57}.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-bar span{margin-left:8px;font-size:12px;color:#7a766c}
.term-body{padding:20px 22px;font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.85;color:#d8d4c8;overflow-x:auto}
.term-body .c1{color:#7a766c}.term-body .c2{color:#e2925f}.term-body .c3{color:#dcc18a}.term-body .c4{color:#86cfa3}
.term-resp{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.12)}
.cursor{display:inline-block;width:8px;height:15px;background:var(--accent);vertical-align:-2px;animation:blink 1.1s steps(2) infinite}
@keyframes blink{0%,50%{opacity:1}50.1%,100%{opacity:0}}

/* ---------- marquee ---------- */
.strip{position:relative;z-index:2;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;margin-top:24px;overflow:hidden;background:var(--surface)}
.strip .lbl{font-size:12px;color:var(--text-mute);letter-spacing:.18em;text-transform:uppercase;margin-bottom:14px;text-align:center}
.marquee{display:flex;gap:54px;white-space:nowrap;animation:scroll 26s linear infinite;width:max-content}
.marquee span{font-size:17px;color:var(--text-dim);font-weight:500;display:flex;align-items:center;gap:54px}
.marquee span::after{content:"•";color:var(--accent);opacity:.6}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- cards (pillars / generic) ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.4s var(--ease);overflow:hidden;box-shadow:0 1px 2px rgba(40,36,28,.03)}
.card::before{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;background:linear-gradient(160deg,var(--accent),transparent 40%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .4s var(--ease)}
.card:hover{transform:translateY(-5px);border-color:transparent;box-shadow:0 22px 44px -24px rgba(189,93,63,.3)}
.card:hover::before{opacity:1}
.card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);border:1px solid rgba(217,119,87,.22);color:var(--accent-deep);margin-bottom:22px}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:21px;font-weight:600;letter-spacing:-.02em}
.card .tag{font-size:12px;color:var(--accent-deep);background:var(--accent-soft);padding:3px 9px;border-radius:6px;margin-left:8px;font-weight:500;vertical-align:2px}
.card p{color:var(--text-dim);font-size:14.5px;margin-top:12px;line-height:1.6}
.card ul{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:9px}
.card ul li{font-size:13.5px;color:var(--text-dim);display:flex;align-items:center;gap:9px}
.card ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex:none}
.card .more{margin-top:22px;font-size:14px;color:var(--accent-deep);font-weight:500;display:inline-flex;align-items:center;gap:7px;transition:gap .25s var(--ease)}
.card:hover .more{gap:12px}

/* ---------- table ---------- */
.table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);box-shadow:0 1px 3px rgba(40,36,28,.04)}
.trow{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;align-items:center;padding:17px 26px;border-bottom:1px solid var(--line);transition:background .25s}
.trow:last-child{border-bottom:none}
.trow.head{background:var(--surface-2);font-size:12.5px;color:var(--text-mute);letter-spacing:.05em;text-transform:uppercase}
.trow:not(.head):hover{background:var(--surface-2)}
.trow .m{display:flex;align-items:center;gap:12px;font-weight:600;font-size:15px}
.trow .m .badge{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:700;background:var(--accent-soft);color:var(--accent-deep);font-family:'JetBrains Mono',monospace}
.src{font-size:12.5px;padding:4px 11px;border-radius:100px;border:1px solid var(--line-2);color:var(--text-dim);width:fit-content}
.src.pool{color:var(--amber);border-color:rgba(176,122,22,.3);background:rgba(176,122,22,.07)}
.src.up{color:#2f8f5f;border-color:rgba(47,143,95,.3);background:rgba(47,143,95,.07)}
.trow .price{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--text)}
.trow .ctx{font-size:13.5px;color:var(--text-dim);font-family:'JetBrains Mono',monospace}

/* ---------- virtual service cards ---------- */
.vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.vcard{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;transition:.35s var(--ease);display:flex;flex-direction:column;gap:14px;box-shadow:0 1px 2px rgba(40,36,28,.03)}
.vcard:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 18px 36px -22px rgba(189,93,63,.28)}
.vcard .vic{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--line);color:var(--accent-deep)}
.vcard:hover .vic{background:var(--accent-soft)}
.vcard h4{font-size:16.5px;font-weight:600;letter-spacing:-.01em}
.vcard p{font-size:13px;color:var(--text-mute);line-height:1.55}
.vcard .spec{display:flex;flex-direction:column;gap:7px;margin-top:2px}
.vcard .spec li{list-style:none;font-size:12.5px;color:var(--text-dim);display:flex;align-items:center;gap:8px}
.vcard .spec li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--accent);flex:none}
.vcard .pr{margin-top:auto;padding-top:6px;font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--text-dim);display:flex;align-items:baseline;justify-content:space-between}
.vcard .pr b{color:var(--accent-deep);font-size:17px}
.vcard .pr .buy{font-family:'Inter';font-size:13px;color:var(--accent-deep);font-weight:500}
.vcard.soon{border-style:dashed;align-items:center;justify-content:center;text-align:center;color:var(--text-mute);box-shadow:none;background:transparent}
.vcard.soon h4{color:var(--text-dim)}

/* ---------- pricing / plan cards ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;display:flex;flex-direction:column;transition:.35s var(--ease);box-shadow:0 1px 2px rgba(40,36,28,.03)}
.plan:hover{transform:translateY(-4px);box-shadow:0 20px 44px -26px rgba(189,93,63,.26)}
.plan.featured{border-color:var(--accent);box-shadow:0 24px 50px -28px rgba(189,93,63,.32)}
.plan.featured::after{content:"推荐";position:absolute;top:-11px;left:28px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:100px}
.plan .pname{font-size:18px;font-weight:600}
.plan .pdesc{font-size:13.5px;color:var(--text-mute);margin-top:6px;min-height:38px}
.plan .pprice{margin-top:18px;display:flex;align-items:baseline;gap:6px}
.plan .pprice b{font-size:38px;font-weight:700;letter-spacing:-.03em}
.plan .pprice span{font-size:14px;color:var(--text-mute)}
.plan ul{list-style:none;margin:22px 0;display:flex;flex-direction:column;gap:12px}
.plan ul li{font-size:14px;color:var(--text-dim);display:flex;align-items:flex-start;gap:10px;line-height:1.45}
.plan ul li svg{width:17px;height:17px;color:var(--accent);flex:none;margin-top:2px}
.plan .btn{margin-top:auto;justify-content:center}

/* ---------- features band ---------- */
.fgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fcell{padding:26px;border-left:2px solid var(--accent-soft)}
.fcell .n{font-family:'Instrument Serif',serif;font-size:40px;color:var(--accent);line-height:1}
.fcell h4{font-size:16px;font-weight:600;margin-top:16px}
.fcell p{font-size:13.5px;color:var(--text-dim);margin-top:8px;line-height:1.6}

/* ---------- docs layout ---------- */
.doc-layout{display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:start}
.doc-side{position:sticky;top:90px;display:flex;flex-direction:column;gap:6px}
.doc-side a{font-size:14px;color:var(--text-dim);padding:8px 12px;border-radius:8px;transition:.2s}
.doc-side a:hover,.doc-side a.active{background:var(--accent-soft);color:var(--accent-deep)}
.doc-side .grp{font-size:12px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.1em;margin:18px 0 6px;padding-left:12px}
.doc-content h2{font-size:26px;letter-spacing:-.02em;margin:8px 0 14px;scroll-margin-top:90px}
.doc-content h3{font-size:18px;margin:34px 0 10px;scroll-margin-top:90px}
.doc-content p{color:var(--text-dim);font-size:15px;line-height:1.7;margin-bottom:14px}
.doc-content .code{background:#16140f;border-radius:12px;padding:18px 20px;font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.8;color:#d8d4c8;overflow-x:auto;margin:14px 0;border:1px solid rgba(40,36,28,.14)}
.doc-content .code .c1{color:#7a766c}.doc-content .code .c2{color:#e2925f}.doc-content .code .c3{color:#dcc18a}
.doc-content .note{border-left:3px solid var(--accent);background:var(--accent-soft);padding:14px 18px;border-radius:0 10px 10px 0;font-size:14px;color:var(--text);margin:16px 0}
.doc-content table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.doc-content th,.doc-content td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line)}
.doc-content th{color:var(--text-mute);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.04em}
.doc-content td{color:var(--text-dim)}
.doc-content td code,.doc-content p code{font-family:'JetBrains Mono',monospace;font-size:12.5px;background:var(--surface-2);padding:2px 7px;border-radius:6px;color:var(--accent-deep)}

/* ---------- faq (native accordion) ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:820px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 22px;transition:.25s var(--ease);box-shadow:0 1px 2px rgba(40,36,28,.03)}
.faq details[open]{border-color:var(--line-2);box-shadow:0 12px 30px -20px rgba(189,93,63,.22)}
.faq summary{list-style:none;cursor:pointer;padding:18px 0;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:'JetBrains Mono';font-size:22px;color:var(--accent);font-weight:400;transition:transform .25s var(--ease);flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--text-dim);font-size:14.5px;line-height:1.7;padding:0 0 20px;margin:0;max-width:680px}

/* ---------- use-case tiles ---------- */
.uc{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.uc .tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.3s var(--ease);box-shadow:0 1px 2px rgba(40,36,28,.03)}
.uc .tile:hover{transform:translateY(-3px);border-color:var(--line-2)}
.uc .tile .t-ic{font-family:'Instrument Serif',serif;font-style:italic;font-size:30px;color:var(--accent);line-height:1}
.uc .tile h4{font-size:17px;font-weight:600;margin-top:14px}
.uc .tile p{font-size:13.5px;color:var(--text-dim);margin-top:8px;line-height:1.6}

/* ---------- compare table (2-plan) ---------- */
.cmp{width:100%;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px rgba(40,36,28,.04)}
.cmp th,.cmp td{padding:15px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.cmp thead th{background:var(--surface-2);font-size:12.5px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.cmp td:first-child{color:var(--text);font-weight:500}
.cmp td:not(:first-child),.cmp th:not(:first-child){color:var(--text-dim);text-align:center;width:24%}
.cmp tr:last-child td{border-bottom:none}
.cmp .yes{color:var(--green);font-weight:700}
.cmp .hl{color:var(--accent-deep);font-weight:600}

/* ---------- cta band ---------- */
.ctaband{padding:96px 0}
.ctabox{position:relative;border:1px solid var(--line);border-radius:24px;padding:64px 56px;overflow:hidden;
  background:radial-gradient(ellipse 80% 120% at 50% 0%,var(--accent-soft),transparent 60%),var(--surface);box-shadow:0 20px 50px -30px rgba(189,93,63,.25)}
.ctabox::after{content:"";position:absolute;inset:0;opacity:.5;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:40px 40px;mask-image:radial-gradient(circle at 50% 50%,#000,transparent 70%);-webkit-mask-image:radial-gradient(circle at 50% 50%,#000,transparent 70%)}
.ctabox-in{position:relative;z-index:2;text-align:center}
.ctabox h2{font-size:clamp(30px,4vw,46px);letter-spacing:-.03em;font-weight:700;line-height:1.1}
.ctabox p{color:var(--text-dim);font-size:16px;margin:18px auto 0;max-width:480px}
.ctabox .hero-cta{justify-content:center;margin-top:30px}

/* ---------- footer ---------- */
footer{position:relative;z-index:2;border-top:1px solid var(--line);padding:60px 0 38px;margin-top:20px;background:var(--surface)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-grid h5{font-size:13px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.1em;margin-bottom:18px}
.foot-grid a{display:block;font-size:14px;color:var(--text-dim);margin-bottom:11px;transition:color .2s}
.foot-grid a:hover{color:var(--accent-deep)}
.foot-grid .logo{margin-bottom:16px}
.foot-grid .desc{font-size:13.5px;color:var(--text-mute);line-height:1.6;max-width:280px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-mute)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media(max-width:920px){
  .grid-3,.grid-2,.vgrid,.plans,.fgrid,.foot-grid,.doc-layout,.uc{grid-template-columns:1fr}
  .navlinks{display:none}
  .doc-side{position:static;flex-direction:row;flex-wrap:wrap;margin-bottom:24px}
  .trow{grid-template-columns:1.4fr 1fr;gap:8px 0}
  .trow .ctx,.trow.head .ctx{display:none}
  .fcell{border-left:none;border-top:2px solid var(--accent-soft)}
}

/* ── 多语言切换器 ── */
.langsw{
  appearance:none;-webkit-appearance:none;
  font-family:inherit;font-size:13.5px;color:var(--text-dim);
  background:var(--surface-2);
  border:1px solid var(--line);border-radius:9px;
  padding:7px 26px 7px 11px;cursor:pointer;line-height:1;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236c6a61' stroke-width='2.2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.langsw:hover{color:var(--text);border-color:var(--line-2)}
.langsw:focus{outline:none;border-color:var(--accent)}
/* 手机端：切换器保留并紧凑；超小屏隐藏“登录”幽灵按钮留出空间（登录走控制台/页脚） */
@media(max-width:920px){
  .nav-right{gap:10px}
  .langsw{font-size:13px;padding:6px 22px 6px 10px}
}
@media(max-width:560px){
  .nav-right{gap:8px}
  .nav-right .btn.ghost{display:none}
  .nav-right .btn.solid{padding-left:13px;padding-right:13px}
}

/* ── 多语言防闪烁:非默认语言先隐藏正文,翻译应用后由 i18n.js 揭示 ── */
html.i18n-wait{background:#FAF9F5}
html.i18n-wait body{visibility:hidden}