/* ════════════════════════════════════════════════════════════════
   NAGI SOLUTIONS · 凪 — Sumi-e Editorial design system
   "Nagi" (凪) — the calm of the sea when the wind dies.
   Calm, controlled delivery amid complexity.
   ════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Noto+Serif+JP:wght@200;300;400;500;600&family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

:root {
  --navy:#23211c;          /* sumi ink — warm near-black */
  --navy2:#2f2c25;
  --ink:#23211c;
  --red:#b8402f;           /* 朱 shu-iro — Japanese vermillion */
  --red2:#9a3122;
  --kin:#b08d57;           /* 金 muted gold */
  --seiji:#7d9a86;         /* 青磁 celadon green */
  --white:#faf7f0;
  --off:#f3eee3;           /* 和紙 washi paper */
  --paper:#efe9db;
  --g100:#ece5d7;
  --g200:#ddd4c2;
  --g300:#c4b9a3;
  --g400:#9a8f7c;
  --g500:#6e655a;
  --g700:#403a32;
  --font-serif:'Instrument Serif',Georgia,serif;
  --font-jp:'Noto Serif JP','Instrument Serif',serif;
  --font-sans:'Geist',system-ui,sans-serif;
  --font-mono:'Geist Mono',ui-monospace,monospace;
  --max:1160px;
  --ease:0.35s cubic-bezier(0.22,0.61,0.36,1);
  --ease-soft:0.6s cubic-bezier(0.22,0.61,0.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);background:var(--off);color:var(--g700);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative}

body::before{content:'';position:fixed;inset:0;z-index:1;pointer-events:none;opacity:0.5;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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E")}
body > *{position:relative;z-index:2}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

::selection{background:var(--red);color:var(--white)}
::-webkit-scrollbar{width:11px}
::-webkit-scrollbar-track{background:var(--off)}
::-webkit-scrollbar-thumb{background:var(--g300);border:3px solid var(--off);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--g400)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;background:rgba(243,238,227,0.72);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border-bottom:1px solid transparent;transition:border-color var(--ease),background var(--ease),box-shadow var(--ease)}
.nav.scrolled{border-bottom-color:var(--g200);box-shadow:0 1px 0 rgba(35,33,28,0.02),0 12px 40px -28px rgba(35,33,28,0.35)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;height:72px}
.nav-inner > a img{height:28px;width:auto;transition:opacity var(--ease)}
.logo-mark{width:38px;height:38px;background:var(--red);color:var(--white);border-radius:8px;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-size:22px;font-style:italic;flex-shrink:0;transition:background var(--ease)}
.nav-inner > a img:hover{opacity:0.8}
.nav-logo{display:flex;align-items:center;gap:11px}
.nav-logo .enso-mark{width:30px;height:30px;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:transform var(--ease)}
.nav-logo:hover .enso-mark{transform:rotate(-12deg)}
.nav-logo .enso-mark svg{width:100%;height:100%}
.nav-logo .wm{display:flex;flex-direction:column;line-height:1}
.nav-logo .wm-main{font-family:var(--font-serif);font-size:21px;color:var(--ink);letter-spacing:0.3px}
.nav-logo .wm-sub{font-family:var(--font-mono);font-size:8.5px;letter-spacing:3px;text-transform:uppercase;color:var(--g400);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{position:relative;font-size:13.5px;font-weight:500;color:var(--g500);padding:8px 14px;border-radius:7px;transition:color var(--ease)}
.nav-links a::after{content:'';position:absolute;left:14px;right:14px;bottom:4px;height:1px;background:var(--red);transform:scaleX(0);transform-origin:right;transition:transform var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);transform-origin:left}
.nav-links a.active{color:var(--ink)}
.nav-cta{background:#23211c;background:var(--ink)!important;color:var(--white)!important;padding:9px 20px!important;border-radius:100px!important;font-weight:600!important;font-size:13px!important;transition:background var(--ease),transform var(--ease)!important}
.nav-cta::after{display:none!important}
.nav-cta:hover{background:var(--red)!important;transform:translateY(-1px)}
.hamburger{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:8px;background:none;border:none;cursor:pointer;-webkit-tap-highlight-color:transparent}
.hamburger:hover{background:var(--g100)}
.hlines{display:flex;flex-direction:column;gap:5px}
.hlines span{display:block;width:20px;height:1.5px;background:#23211c;background:var(--ink);border-radius:2px;transition:all .35s}
.mob{position:fixed;inset:0;z-index:9999;background:var(--off);padding:90px 28px 32px;transform:translateX(100%);transition:transform .4s cubic-bezier(0.22,0.61,0.36,1);pointer-events:none;overflow-y:auto}
.mob.open{transform:translateX(0);pointer-events:all}
.mob a{display:block;font-family:var(--font-serif);font-size:26px;color:var(--ink);padding:16px 0;border-bottom:1px solid var(--g200)}
.mob-cta{display:block!important;margin-top:28px;background:#23211c;background:var(--ink);color:var(--white)!important;padding:16px!important;text-align:center;border-radius:100px;font-family:var(--font-sans)!important;font-weight:600!important;font-size:15px!important;border:none!important}

/* PAGE HERO (inner pages) */
.ph{position:relative;padding:148px 32px 76px;background:var(--off);border-bottom:1px solid var(--g200);overflow:hidden}
.ph::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 70% at 78% 30%,rgba(184,64,47,0.07),transparent 60%),radial-gradient(ellipse 50% 60% at 12% 90%,rgba(125,154,134,0.08),transparent 60%)}
.ph::after{content:'';position:absolute;top:0;right:0;width:42%;height:100%;opacity:0.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='104' viewBox='0 0 60 104'%3E%3Cg fill='none' stroke='%23ddd4c2' stroke-width='0.8'%3E%3Cpath d='M30 0v52M0 26l30 26 30-26M0 78l30-26 30 26M30 52v52M0 26v52M60 26v52'/%3E%3C/g%3E%3C/svg%3E");-webkit-mask-image:linear-gradient(to left,#000,transparent);mask-image:linear-gradient(to left,#000,transparent)}
.ph-inner{position:relative;z-index:1;max-width:var(--max);margin:0 auto}
.tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;color:var(--red);letter-spacing:2.5px;text-transform:uppercase;margin-bottom:22px}
.tag::before{content:'';display:block;width:22px;height:1px;background:var(--red)}
.ph h1{font-family:var(--font-serif);font-size:clamp(40px,5.4vw,68px);color:var(--ink);line-height:1.02;font-weight:400;letter-spacing:-0.5px;margin-bottom:22px}
.ph h1 em{font-style:italic;color:var(--red)}
.ph p{font-size:17.5px;color:var(--g500);max-width:520px;line-height:1.75}

/* LAYOUT */
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}
.section{padding:96px 32px}
.section-sm{padding:60px 32px}

/* TYPE */
.eyebrow{font-family:var(--font-mono);font-size:11px;color:var(--red);letter-spacing:2.5px;text-transform:uppercase;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:'';display:block;width:22px;height:1px;background:var(--red)}
.h2{font-family:var(--font-serif);font-size:clamp(32px,4.2vw,54px);color:var(--ink);line-height:1.08;font-weight:400;letter-spacing:-0.5px}
.lead{font-size:17.5px;color:var(--g500);line-height:1.8;max-width:520px;margin-top:14px}

/* BUTTONS */
.btn{position:relative;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;padding:13px 26px;border-radius:100px;transition:all var(--ease);cursor:pointer;font-family:var(--font-sans);overflow:hidden;z-index:1}
.btn-dark{background:#23211c;background:var(--ink);color:var(--white)}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 14px 34px -14px rgba(35,33,28,0.55)}
.btn-dark::after{content:'';position:absolute;inset:0;background:var(--red);transform:translateY(101%);transition:transform var(--ease);z-index:-1}
.btn-dark:hover::after{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--g300)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-red{background:var(--red);color:var(--white)}
.btn-red:hover{background:var(--red2);transform:translateY(-2px);box-shadow:0 14px 34px -14px rgba(184,64,47,0.6)}

/* REVEAL */
.r{opacity:0;transform:translateY(22px);transition:opacity var(--ease-soft),transform var(--ease-soft)}
.r.on{opacity:1;transform:none}
.r1{transition-delay:.09s}.r2{transition-delay:.18s}.r3{transition-delay:.27s}.r4{transition-delay:.36s}
@media(prefers-reduced-motion:reduce){.r{opacity:1!important;transform:none!important}*{animation:none!important;scroll-behavior:auto!important}}

/* BRUSH DIVIDER */
.brush-rule{display:block;width:100%;max-width:var(--max);margin:0 auto;height:26px;opacity:0.85}
.brush-rule path{fill:var(--ink)}

/* FOOTER */
.footer{position:relative;background:#23211c;background:var(--ink);padding:80px 32px 40px;overflow:hidden}
.footer::before{content:'';position:absolute;inset:0;opacity:0.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='40'%3E%3Cg fill='none' stroke='%23faf7f0' stroke-width='1'%3E%3Cpath d='M0 40c0-22 18-40 40-40s40 18 40 40M-40 40c0-22 18-40 40-40M40 40c0-22 18-40 40-40'/%3E%3C/g%3E%3C/svg%3E")}
.footer-inner{position:relative;max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px;margin-bottom:56px}
.f-brand{font-family:var(--font-serif);font-size:24px;color:var(--white);margin-bottom:12px;display:flex;align-items:center;gap:9px}
.f-brand .k{font-family:var(--font-jp);color:var(--red);font-weight:400}
.f-desc{font-size:13px;color:rgba(250,247,240,0.4);line-height:1.8;max-width:240px}
.f-title{font-size:11px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--white);margin-bottom:18px}
.f-col a{display:block;font-size:13px;color:rgba(250,247,240,0.45);margin-bottom:11px;transition:color var(--ease),padding-left var(--ease)}
.f-col a:hover{color:var(--white);padding-left:4px}
.f-bottom{position:relative;max-width:var(--max);margin:0 auto;padding-top:30px;border-top:1px solid rgba(250,247,240,0.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:rgba(250,247,240,0.32)}
.divider{border:none;border-top:1px solid var(--g200)}

/* SHARED CARD HOVER POLISH */
.svc-card,.sec-card,.pm-card,.ss-block,.v-card,.ic,.why-card,.cred-group{transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)!important}
.svc-card:hover,.sec-card:hover,.pm-card:hover,.ss-block:hover,.v-card:hover,.ic:hover,.why-card:hover{transform:translateY(-4px)!important;box-shadow:0 18px 44px -22px rgba(35,33,28,0.4)!important}
.btn:active{transform:translateY(0) scale(0.98)!important}

@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.ph .tag{animation:fadeInUp .7s ease forwards}
.ph h1{animation:fadeInUp .85s .08s ease both}
.ph p{animation:fadeInUp .85s .2s ease both}

@media(max-width:860px){
  .nav-inner{padding:0 20px;height:64px}
  .nav-links,.nav-cta{display:none}
  .hamburger{display:flex}
  .section,.section-sm{padding-left:20px;padding-right:20px}
  .section{padding-top:64px;padding-bottom:64px}
  .wrap{padding:0 20px}
  .ph{padding:120px 20px 56px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:34px}
}
@media(max-width:560px){
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .f-bottom{flex-direction:column;text-align:center}
  .nav-logo .wm-sub{display:none}
}

/* ── SCROLL PROGRESS BAR ── */
#progress{position:fixed;top:0;left:0;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;z-index:8000;pointer-events:none;width:100%}

/* ── VIEW TRANSITIONS ── */
@supports(view-transition-name:root){
  ::view-transition-old(root){animation:.3s ease both vt-out}
  ::view-transition-new(root){animation:.4s ease both vt-in}
}
@keyframes vt-out{to{opacity:0;transform:translateY(-10px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(14px)}}

/* ── NAV DARK MODE (over dark sections) ── */
.nav-dark{background:rgba(35,33,28,.88)!important;border-bottom-color:rgba(250,247,240,.08)!important}
.nav-dark .nav-links a{color:rgba(250,247,240,.55)}
.nav-dark .nav-links a:hover,.nav-dark .nav-links a.active{color:var(--white)!important;background:transparent!important}
.nav-dark .wm-main{color:var(--white)!important}
.nav-dark .wm-sub{color:rgba(250,247,240,.35)!important}
.nav-dark .nav-links a::after{background:rgba(250,247,240,.5)}
.nav-dark .hamburger span{background:var(--white)}