/* ========================================================================
   LUCA · Ronin ink theme
   Dark canvas, crimson blade accent, hairline structure, tasteful motion.
   ======================================================================== */
:root{
  --bg:#08080a; --bg-2:#0d0d10; --panel:rgba(255,255,255,.028);
  --panel-2:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
  --fg:#f5f5f6; --muted:#a4a4ad; --faint:#71717a;
  --blade:#ec4d58; --blade-2:#ff6b73; --blade-dim:rgba(236,77,88,.14);
  --ok:#4ade80;
  --radius:16px; --r-sm:10px; --r-lg:22px;
  --shadow:0 24px 60px -22px rgba(0,0,0,.7);
  --ease:cubic-bezier(.22,1,.36,1);
  --spring:cubic-bezier(.34,1.56,.64,1);
  --f-disp:"Bricolage Grotesque",system-ui,sans-serif;
  --f-body:"Inter",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,monospace;
  --f-kana:"Zen Kaku Gothic New",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--f-body);color:var(--fg);background:var(--bg);line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100dvh}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:radial-gradient(900px 620px at 84% 6%,rgba(236,77,88,.17),transparent 60%),radial-gradient(760px 700px at 6% 100%,rgba(120,120,170,.07),transparent 55%),linear-gradient(180deg,#08080a,#0a0a0d 55%,#08080a)}
.grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.42;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%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)' opacity='.35'/%3E%3C/svg%3E");mix-blend-mode:overlay}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
button:disabled{opacity:.4;cursor:not-allowed}
input{font:inherit}
.hidden{display:none!important}
::selection{background:var(--blade);color:#fff}
:focus-visible{outline:2px solid var(--blade);outline-offset:2px;border-radius:6px}

/* ---- shared type ---- */
.kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.kicker .tick{width:16px;height:1px;background:var(--blade);box-shadow:0 0 10px var(--blade)}
.blade{color:var(--blade);font-style:normal;position:relative}
.mark{display:inline-flex;align-items:baseline;gap:8px;font-family:var(--f-disp);font-weight:800;letter-spacing:.02em}
.mark-latin{font-size:1.15rem}
.mark-kana{font-family:var(--f-kana);font-weight:900;color:var(--blade);font-size:.92rem;opacity:.9}
.mark.sm .mark-latin{font-size:1rem}
/* ==================== LANDING ==================== */
.stage{max-width:1200px;margin:0 auto;padding:0 clamp(18px,5vw,56px)}
.top{display:flex;align-items:center;justify-content:space-between;height:74px}
.top-links{display:flex;align-items:center;gap:10px}
.ghost-link{color:var(--muted);font-size:.9rem;padding:9px 12px;border-radius:10px;transition:color .2s}
.ghost-link:hover{color:var(--fg)}
.cta-sm{background:var(--fg);color:#0a0a0b;font-weight:600;font-size:.88rem;padding:10px 16px;border-radius:11px;transition:transform .25s var(--spring),box-shadow .25s}
.cta-sm:hover{transform:translateY(-2px);box-shadow:0 10px 26px -10px rgba(255,255,255,.4)}

.hero{position:relative;display:grid;grid-template-columns:1fr;grid-template-areas:"art" "copy" "auth";gap:14px;align-items:center;padding:6px 0 clamp(40px,7vw,90px)}
.hero-copy{grid-area:copy;position:relative;z-index:2}
.hero-copy h1{font-family:var(--f-disp);font-weight:800;font-size:clamp(2.9rem,7vw,5.4rem);line-height:.94;letter-spacing:-.035em;margin:22px 0 20px}
.hero-copy .lead{color:var(--muted);font-size:clamp(1rem,1.4vw,1.15rem);max-width:46ch}
.tenets{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tenets li{font-size:.82rem;color:var(--muted);border:1px solid var(--line);padding:8px 13px;border-radius:99px;background:var(--panel)}
.tenets b{color:var(--fg);font-weight:600}

/* ronin art: invert paper to black (drops into bg), character glows white, crimson rim */
.hero-art{grid-area:art;position:relative;justify-self:center;width:min(64%,300px);aspect-ratio:1;pointer-events:none}
.hero-art img{width:100%;height:100%;object-fit:contain;filter:invert(1) contrast(1.08) brightness(1.04);mix-blend-mode:lighten;transform:translateZ(0)}
.hero-art .hero-glow{position:absolute;inset:8% 8% 0;z-index:-1;background:radial-gradient(60% 55% at 60% 40%,var(--blade),transparent 68%);filter:blur(46px);opacity:.5}
.hero-art::after{content:"侍";position:absolute;right:-2%;bottom:2%;font-family:var(--f-kana);font-weight:900;font-size:clamp(4rem,9vw,7rem);color:rgba(255,255,255,.05);z-index:-1}
/* ==================== AUTH CARD ==================== */
.auth{grid-area:auth;position:relative;z-index:3;background:linear-gradient(180deg,rgba(20,20,24,.86),rgba(12,12,15,.9));border:1px solid var(--line-2);border-radius:var(--r-lg);padding:22px;backdrop-filter:blur(22px);box-shadow:var(--shadow);width:100%;justify-self:stretch}
.seg{position:relative;display:grid;grid-template-columns:1fr 1fr;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:4px;margin-bottom:18px}
.seg-btn{position:relative;z-index:1;padding:10px;font-size:.86rem;font-weight:500;color:var(--muted);border-radius:9px;transition:color .25s}
.seg-btn.is-active{color:var(--fg)}
.seg-thumb{position:absolute;z-index:0;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);background:var(--panel-2);border:1px solid var(--line-2);border-radius:9px;transition:transform .34s var(--spring)}
.seg[data-mode="login"] .seg-thumb{transform:translateX(100%)}
.google{width:100%;display:flex;align-items:center;justify-content:center;gap:11px;padding:13px;background:#fff;color:#1a1a1a;font-weight:600;font-size:.92rem;border-radius:12px;transition:transform .25s var(--spring),box-shadow .25s}
.google:hover{transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(255,255,255,.35)}
.google:active{transform:translateY(0)}
.divider{display:flex;align-items:center;gap:12px;margin:16px 0;color:var(--faint);font-size:.74rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.field{display:grid;gap:7px;margin-bottom:13px}
.field>span{font-size:.74rem;color:var(--muted);font-weight:500}
.field input{width:100%;padding:13px 14px;background:var(--panel);border:1px solid var(--line);border-radius:11px;color:var(--fg);outline:none;transition:border-color .2s,background .2s}
.field input::placeholder{color:var(--faint)}
.field input:focus{border-color:var(--blade);background:rgba(236,77,88,.05)}
.pw-meter{font-size:.7rem;color:var(--faint);min-height:14px}
.pw-meter[data-level="low"]{color:var(--blade)}
.pw-meter[data-level="mid"]{color:#e8b04b}
.pw-meter[data-level="high"]{color:var(--ok)}
.agree{display:flex;gap:9px;align-items:flex-start;font-size:.76rem;color:var(--muted);margin:4px 0 14px;cursor:pointer}
.agree input{margin-top:2px;accent-color:var(--blade);width:15px;height:15px}
.agree a{color:var(--fg);text-decoration:underline;text-underline-offset:2px}
.submit{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:14px;background:var(--blade);color:#fff;font-weight:600;font-size:.95rem;border-radius:12px;transition:transform .25s var(--spring),box-shadow .25s;box-shadow:0 10px 30px -12px var(--blade)}
.submit:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 16px 38px -12px var(--blade)}
.submit .arw{transition:transform .25s var(--spring)}
.submit:hover:not(:disabled) .arw{transform:translate(3px,-3px)}
.auth-error{min-height:18px;color:var(--blade-2);font-size:.78rem;margin-top:8px}
.fine{font-size:.7rem;color:var(--faint);margin-top:12px;text-align:center}
/* ==================== CAPABILITIES + FAQ ==================== */
.caps,.faq-wrap{padding:clamp(40px,8vw,90px) 0}
.caps-head{max-width:620px;margin-bottom:38px}
.caps-head h2{font-family:var(--f-disp);font-weight:700;font-size:clamp(1.8rem,4vw,2.9rem);line-height:1.02;letter-spacing:-.03em;margin-top:14px}
.caps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cap{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);padding:22px;transition:border-color .3s,transform .3s var(--ease),background .3s}
.cap:hover{border-color:var(--line-2);background:var(--panel-2);transform:translateY(-4px)}
.cap-no{font-family:var(--f-mono);font-size:.72rem;color:var(--blade)}
.cap h3{font-family:var(--f-disp);font-weight:700;font-size:1.15rem;margin:14px 0 8px}
.cap p{color:var(--muted);font-size:.86rem;line-height:1.5}

.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 2px;font-family:var(--f-disp);font-weight:600;font-size:clamp(1rem,2vw,1.25rem)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{position:relative;width:16px;height:16px;flex:none}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;background:var(--muted);transition:transform .3s var(--ease),opacity .3s}
.faq summary i::before{top:7px;left:0;right:0;height:2px}
.faq summary i::after{left:7px;top:0;bottom:0;width:2px}
.faq details[open] summary i::after{transform:scaleY(0);opacity:0}
.faq details[open] summary i::before{background:var(--blade)}
.faq details>div{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease)}
.faq details[open]>div{grid-template-rows:1fr}
.faq details>div>p{overflow:hidden;color:var(--muted);font-size:.9rem;line-height:1.6;max-width:64ch;padding-bottom:0}
.faq details[open]>div>p{padding-bottom:20px}

/* ==================== FOOTER ==================== */
.foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:30px 0 40px;border-top:1px solid var(--line);color:var(--faint);font-size:.8rem}
.foot .mark-latin{font-family:var(--f-disp);font-weight:800;color:var(--fg)}
.foot nav{display:flex;gap:16px}
.foot nav a:hover,.foot-by a:hover{color:var(--fg)}
.foot-by a{color:var(--muted)}
/* ==================== APP SHELL ==================== */
.topbar{position:sticky;top:0;z-index:20;height:64px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 clamp(14px,3vw,26px);border-bottom:1px solid var(--line);background:rgba(8,8,10,.72);backdrop-filter:blur(20px)}
.burger{display:none;flex-direction:column;gap:4px;padding:8px}
.burger i{width:18px;height:2px;background:var(--fg);border-radius:2px;transition:.25s}
.top-actions{display:flex;align-items:center;gap:8px}
.pill{background:var(--panel-2);border:1px solid var(--line);padding:8px 14px;border-radius:99px;font-size:.78rem;transition:border-color .2s}
.pill:hover{border-color:var(--line-2)}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--blade);color:#fff;font-weight:700;font-size:.72rem;font-family:var(--f-mono)}
.layout{display:flex;min-height:calc(100dvh - 64px)}
.sidebar{width:230px;flex:none;border-right:1px solid var(--line);padding:24px 14px;display:flex;flex-direction:column;gap:6px}
.side-label{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);padding:0 12px 12px}
#side-nav,#bottom-nav{display:grid;gap:4px}
.nav-btn{display:flex;align-items:center;gap:11px;padding:12px;border-radius:11px;color:var(--muted);font-size:.88rem;text-align:left;transition:background .2s,color .2s}
.nav-btn b{display:flex}
.nav-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-btn:hover{color:var(--fg);background:var(--panel)}
.nav-btn.active{color:var(--fg);background:var(--panel-2)}
.nav-btn.active .nav-dot{background:var(--blade);box-shadow:0 0 10px var(--blade)}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--line-2);flex:none}
.side-foot{margin-top:auto;display:grid;gap:8px;font-family:var(--f-mono);font-size:.64rem;color:var(--faint)}
.side-foot img{width:100%;height:96px;object-fit:cover;object-position:top;border-radius:12px;opacity:.5;filter:grayscale(1) contrast(1.1)}
.content{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:28px clamp(16px,3vw,34px) 110px}
.bottom-nav{display:none}

/* ---- view primitives ---- */
.view-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px;flex-wrap:wrap}
.eyebrow{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blade)}
.view-title{font-family:var(--f-disp);font-weight:700;font-size:clamp(1.9rem,5vw,3.1rem);letter-spacing:-.035em;line-height:1;margin:8px 0 6px}
.muted{color:var(--muted);font-size:.9rem}
.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.hero-card{position:relative;overflow:hidden;min-height:210px;background:linear-gradient(150deg,rgba(236,77,88,.1),var(--panel))}
.hero-card::after{content:"侍";position:absolute;right:-14px;bottom:-46px;font-family:var(--f-kana);font-weight:900;font-size:12rem;color:rgba(255,255,255,.03)}
.metric{font-family:var(--f-disp);font-weight:700;font-size:2.4rem;letter-spacing:-.04em;margin:8px 0}
.metric small{font-size:.8rem;color:var(--muted);letter-spacing:0;font-weight:500}
.accent{color:var(--blade)}
.status{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:var(--muted)}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--faint)}
.status.online{color:var(--ok)}
.status.online::before{background:var(--ok);box-shadow:0 0 12px var(--ok)}
.action-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}
.primary{display:inline-flex;align-items:center;gap:8px;background:var(--blade);color:#fff;font-weight:600;font-size:.88rem;padding:12px 16px;border-radius:11px;transition:transform .25s var(--spring),box-shadow .25s;box-shadow:0 10px 26px -14px var(--blade)}
.primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px var(--blade)}
.primary.wide{width:100%;justify-content:center;margin-top:16px}
.secondary{display:inline-flex;align-items:center;gap:7px;background:var(--panel-2);border:1px solid var(--line);color:var(--fg);font-size:.82rem;padding:11px 14px;border-radius:11px;transition:border-color .2s,transform .2s}
.secondary:hover{border-color:var(--line-2);transform:translateY(-1px)}
.menu-image{width:100%;max-height:230px;object-fit:contain;filter:invert(1) contrast(1.06);mix-blend-mode:lighten;margin-top:12px}
.progress{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin-top:12px}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--blade),var(--blade-2));border-radius:inherit;transition:width .6s var(--ease)}
.list{display:grid}
.list-row{display:flex;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:.84rem}
.list-row:last-child{border-bottom:none}
h2 span.accent{color:var(--blade)}
code{font-family:var(--f-mono);font-size:.85em;color:var(--blade-2)}
input.command-search,#claim-code,.modal input{width:100%;padding:12px 14px;background:var(--panel);border:1px solid var(--line);border-radius:11px;color:var(--fg);outline:none;transition:border-color .2s}
input.command-search:focus,#claim-code:focus,.modal input:focus{border-color:var(--blade)}
.command-search{margin-bottom:16px}
.command-group h3{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.08em;color:var(--blade);margin:24px 0 8px}
.command{display:flex;justify-content:space-between;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);padding:13px 15px;border-radius:11px;margin:7px 0;transition:border-color .2s,transform .2s}
.command:hover{border-color:var(--line-2);transform:translateX(3px)}
.command span{color:var(--muted);font-size:.76rem;text-align:right}
.faq.card details{border-bottom:1px solid var(--line);padding:4px 0}
.faq.card summary{padding:14px 0;font-size:.92rem;font-family:var(--f-body);font-weight:500}
.faq.card p{color:var(--muted);font-size:.84rem;padding-bottom:14px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--radius)}
.table{width:100%;border-collapse:collapse;font-size:.78rem}
.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.table th{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.table tr:last-child td{border-bottom:none}
.tag{font-family:var(--f-mono);font-size:.66rem;padding:5px 8px;border-radius:6px;background:var(--panel-2);color:var(--muted);border:1px solid var(--line)}
.tag.good{color:var(--ok);border-color:rgba(74,222,128,.3)}
.micro{font-size:.7rem;color:var(--faint);margin-top:10px}
/* ==================== MODAL + TOAST ==================== */
.modal-back{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.66);backdrop-filter:blur(6px);display:grid;place-items:end center;padding:12px;animation:fade .2s var(--ease)}
.modal{width:min(100%,500px);background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-lg) var(--r-lg) 14px 14px;padding:24px;max-height:90dvh;overflow:auto;box-shadow:var(--shadow);animation:rise .35s var(--spring)}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.modal h2{font-family:var(--f-disp);font-weight:700;font-size:1.4rem}
.close{width:34px;height:34px;border-radius:9px;color:var(--muted);font-size:1.3rem;line-height:1;transition:background .2s,color .2s}
.close:hover{background:var(--panel-2);color:var(--fg)}
.modal label{display:grid;gap:7px;font-size:.76rem;color:var(--muted);margin:14px 0}
.code{font-family:var(--f-mono);font-weight:500;font-size:1.9rem;letter-spacing:.18em;text-align:center;color:var(--blade);padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:14px;margin:16px 0}
.toast{position:fixed;left:50%;bottom:calc(88px + env(safe-area-inset-bottom));transform:translate(-50%,16px);background:var(--fg);color:#0a0a0b;font-weight:500;padding:12px 18px;border-radius:99px;font-size:.8rem;z-index:60;opacity:0;pointer-events:none;transition:transform .3s var(--spring),opacity .3s,filter .3s;filter:blur(4px);white-space:nowrap;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translate(-50%,0);filter:blur(0)}

/* ==================== MOTION ==================== */
@keyframes fade{from{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(24px) scale(.98)}}
.reveal{opacity:0;transform:translateY(22px);filter:blur(6px)}
.reveal.in{opacity:1;transform:none;filter:blur(0);transition:opacity .7s var(--ease),transform .7s var(--ease),filter .7s var(--ease)}
.caps-grid .cap.in:nth-child(2){transition-delay:.07s}
.caps-grid .cap.in:nth-child(3){transition-delay:.14s}
.caps-grid .cap.in:nth-child(4){transition-delay:.21s}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none;filter:none}}

/* ==================== RESPONSIVE ==================== */
@media(min-width:901px){
  .hero{grid-template-columns:1.1fr .9fr;grid-template-areas:"copy auth";gap:48px;min-height:calc(100dvh - 74px);align-items:center;padding:clamp(20px,3vw,48px) 0}
  .hero-copy{align-self:center}
  .hero-art{position:absolute;top:50%;right:-6%;transform:translateY(-50%);width:min(54%,600px);opacity:.62;z-index:0}
  .hero-art::after{font-size:clamp(5rem,7vw,8rem)}
  .auth{align-self:center;justify-self:end;max-width:410px}
}
@media(max-width:900px){
  .caps-grid{grid-template-columns:repeat(2,1fr)}
  .auth{margin-top:22px}
}
@media(max-width:560px){
  .caps-grid{grid-template-columns:1fr}
  .top-links .ghost-link{display:none}
  .hero-copy .lead{font-size:1rem}
}
@media(max-width:820px){
  .burger{display:flex}
  .sidebar{position:fixed;top:64px;bottom:0;left:0;z-index:30;width:250px;background:var(--bg-2);border-right:1px solid var(--line-2);transform:translateX(-100%);transition:transform .3s var(--ease)}
  .sidebar.open{transform:none;box-shadow:var(--shadow)}
  .content{padding-bottom:120px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .bottom-nav{display:grid;grid-auto-flow:column;position:fixed;left:0;right:0;bottom:0;z-index:25;background:rgba(8,8,10,.86);backdrop-filter:blur(20px);border-top:1px solid var(--line);padding:8px max(10px,env(safe-area-inset-left)) max(8px,env(safe-area-inset-bottom));gap:0}
  .bottom-nav .nav-btn{flex-direction:column;gap:4px;align-items:center;justify-content:center;padding:7px 4px;font-size:.62rem}
  .bottom-nav .nav-dot{display:none}
  .view-head{align-items:flex-start}
}
@media(min-width:821px){.bottom-nav{display:none}}