/* GOS website 2026 — single stylesheet */
:root{
  --navy:#0E2A47; --navy-d:#081B2E; --navy-l:#1B4675;
  --gold:#C8A253; --gold-d:#A8863C;
  --ink:#1C2530; --muted:#5B6875; --line:#E2E7EC;
  --bg:#FFFFFF; --bg-alt:#F5F8FB; --bg-navy:#0E2A47;
  --max:1120px; --r:4px;
  --f-jp:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","Noto Sans JP",Meiryo,sans-serif;
  --f-en:"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--f-jp);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.85;letter-spacing:.02em;-webkit-font-smoothing:antialiased}
body.en{font-family:var(--f-en);letter-spacing:0;line-height:1.75}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-l);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.45;margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.4em}
li{margin-bottom:.45em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
.hdr-in{max-width:var(--max);margin:0 auto;padding:0 24px;display:flex;align-items:center;
  justify-content:space-between;min-height:74px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand a{display:flex;align-items:baseline;gap:10px;text-decoration:none}
.brand .mark{font-family:var(--f-en);font-weight:700;font-size:30px;letter-spacing:.06em;
  color:var(--navy);line-height:1}
.brand .mark span{color:var(--gold)}
.brand .sub{font-size:10.5px;color:var(--muted);letter-spacing:.12em;line-height:1.3;
  font-family:var(--f-en);white-space:nowrap}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:10px 13px;font-size:14.5px;color:var(--ink);border-radius:var(--r);
  text-decoration:none;white-space:nowrap;font-weight:500}
.nav a:hover{background:var(--bg-alt);color:var(--navy);text-decoration:none}
.nav a[aria-current="page"]{color:var(--navy);box-shadow:inset 0 -2px 0 var(--gold)}
.hdr-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.lang{font-size:12.5px;font-family:var(--f-en);color:var(--muted);
  border:1px solid var(--line);padding:6px 11px;border-radius:var(--r);text-decoration:none}
.lang:hover{border-color:var(--navy);color:var(--navy);text-decoration:none}
.btn{display:inline-block;padding:12px 22px;border-radius:var(--r);font-size:14.5px;
  font-weight:700;text-decoration:none;border:1px solid transparent;transition:.15s;cursor:pointer}
.btn-p{background:var(--navy);color:#fff}
.btn-p:hover{background:var(--navy-l);color:#fff;text-decoration:none}
.btn-g{background:var(--gold);color:#20180B}
.btn-g:hover{background:var(--gold-d);color:#fff;text-decoration:none}
.btn-o{border-color:rgba(255,255,255,.5);color:#fff}
.btn-o:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
.btn-s{border-color:var(--line);color:var(--navy);background:#fff}
.btn-s:hover{border-color:var(--navy);text-decoration:none}
.burger{display:none}
.burger-l{display:none;flex-direction:column;gap:5px;padding:10px;cursor:pointer}
.burger-l span{display:block;width:22px;height:2px;background:var(--navy);transition:.2s}

/* ---------- hero ---------- */
.hero{background:linear-gradient(160deg,#0B2440 0%,#0E2A47 45%,#153A60 100%);color:#fff;
  position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;
  border:1px solid rgba(200,162,83,.22);border-radius:50%}
.hero::before{content:"";position:absolute;right:40px;bottom:-220px;width:380px;height:380px;
  border:1px solid rgba(255,255,255,.08);border-radius:50%}
.hero-in{max-width:var(--max);margin:0 auto;padding:88px 24px 92px;position:relative;z-index:1}
.hero .eyebrow{font-size:12.5px;letter-spacing:.2em;color:var(--gold);font-family:var(--f-en);
  margin:0 0 22px;text-transform:uppercase}
.hero h1{font-size:clamp(28px,4.6vw,50px);line-height:1.32;margin:0 0 26px;max-width:19em;
  font-weight:700}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero .lead{font-size:clamp(15px,1.6vw,18px);line-height:1.95;color:#D6E0EA;max-width:40em;
  margin:0 0 34px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}

/* page header (sub pages) */
.phead{background:var(--navy);color:#fff}
.phead-in{max-width:var(--max);margin:0 auto;padding:54px 24px 50px}
.phead .kicker{font-size:11.5px;letter-spacing:.2em;color:var(--gold);font-family:var(--f-en);
  text-transform:uppercase;margin:0 0 12px}
.phead h1{font-size:clamp(24px,3.4vw,36px);margin:0}
.phead p{margin:16px 0 0;color:#CBD7E3;max-width:46em;font-size:15.5px}

/* breadcrumb */
.bc{border-bottom:1px solid var(--line);background:var(--bg-alt)}
.bc ol{max-width:var(--max);margin:0 auto;padding:11px 24px;list-style:none;display:flex;
  flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--muted)}
.bc li::after{content:"›";margin-left:8px;color:#B6C0CA}
.bc li:last-child::after{content:""}

/* ---------- sections ---------- */
section{padding:76px 0}
section.alt{background:var(--bg-alt)}
section.tight{padding:52px 0}
.sec-h{margin:0 0 44px;max-width:44em}
.sec-h .kicker{font-size:11.5px;letter-spacing:.2em;color:var(--gold-d);font-family:var(--f-en);
  text-transform:uppercase;margin:0 0 12px;font-weight:700}
.sec-h h2{font-size:clamp(21px,2.7vw,30px);margin:0 0 16px;color:var(--navy)}
.sec-h p{color:var(--muted);margin:0;font-size:15.5px}
h3.sub{font-size:19px;color:var(--navy);margin:44px 0 16px;padding-bottom:10px;
  border-bottom:1px solid var(--line)}
h4.sub2{font-size:16px;color:var(--navy);margin:28px 0 10px}

/* grids */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(268px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 26px}
.card h3{font-size:17px;color:var(--navy);margin:0 0 12px}
.card p{font-size:14.5px;color:var(--muted);margin:0}
.card .ico{font-family:var(--f-en);font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--gold-d);margin:0 0 14px}
section.alt .card{background:#fff}

/* pain list */
.pains{list-style:none;padding:0;margin:0;display:grid;gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.pains li{margin:0;background:#fff;padding:20px 24px 20px 56px;position:relative;font-size:15.5px}
.pains li::before{content:"?";position:absolute;left:22px;top:20px;width:22px;height:22px;
  border-radius:50%;background:var(--navy);color:var(--gold);font-family:var(--f-en);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}

/* steps */
.steps{list-style:none;padding:0;margin:0;counter-reset:s;display:grid;gap:20px}
.steps li{margin:0;counter-increment:s;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:26px 28px 26px 76px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:26px;top:24px;width:32px;height:32px;
  border-radius:50%;background:var(--navy);color:#fff;font-family:var(--f-en);font-weight:700;
  font-size:15px;display:flex;align-items:center;justify-content:center}
.steps h3{font-size:16.5px;color:var(--navy);margin:0 0 8px}
.steps p{margin:0;font-size:14.5px;color:var(--muted)}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line)}
.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:16px 18px;text-align:left;
  vertical-align:top}
.tbl th{background:var(--bg-alt);color:var(--navy);white-space:nowrap;width:11em;font-weight:700}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}
.tbl ul{margin:0;padding-left:1.2em}
.tbl-scroll{overflow-x:auto}

/* cases */
.case{border:1px solid var(--line);border-radius:var(--r);padding:0;overflow:hidden;background:#fff}
.case-h{background:var(--bg-alt);padding:16px 22px;border-bottom:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.tag{display:inline-block;font-size:11.5px;padding:4px 10px;border-radius:999px;
  background:var(--navy);color:#fff;letter-spacing:.04em}
.tag.alt{background:#fff;color:var(--navy);border:1px solid var(--navy)}
.case-b{padding:22px 24px}
.case-b dt{font-size:11.5px;letter-spacing:.12em;color:var(--gold-d);font-weight:700;
  text-transform:uppercase;font-family:var(--f-en);margin:0 0 6px}
.case-b dd{margin:0 0 18px;font-size:14.5px;color:var(--ink)}
.case-b dd:last-child{margin-bottom:0}
.case-b ul{margin:0;padding-left:1.2em}

/* faq */
.faq details{border:1px solid var(--line);border-radius:var(--r);background:#fff;
  margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:20px 54px 20px 24px;font-weight:700;font-size:15.5px;
  color:var(--navy);position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:24px;top:18px;font-size:20px;
  color:var(--gold-d);font-weight:400;line-height:1.4}
.faq details[open] summary::after{content:"–"}
.faq summary:hover{background:var(--bg-alt)}
.faq .a{padding:2px 24px 22px;font-size:14.8px;color:var(--muted);border-top:1px solid var(--line)}
.faq .a p:last-child{margin-bottom:0}
.faq .a{padding-top:18px}

/* prose */
.prose{max-width:44em}
.prose p{font-size:15.8px;line-height:2.0}
.prose .sig{margin-top:32px;font-size:15px;color:var(--navy);font-weight:700}
.note{background:var(--bg-alt);border-left:3px solid var(--gold);padding:18px 22px;
  font-size:14px;color:var(--muted);border-radius:0 var(--r) var(--r) 0}

/* form */
.form{max-width:720px}
.fld{margin-bottom:22px}
.fld label{display:block;font-size:14px;font-weight:700;color:var(--navy);margin-bottom:8px}
.fld .req{color:#B4232A;font-size:12px;margin-left:6px}
.fld input[type=text],.fld input[type=email],.fld input[type=tel],.fld textarea,.fld select{
  width:100%;padding:13px 15px;border:1px solid #C9D2DB;border-radius:var(--r);font-size:15px;
  font-family:inherit;background:#fff;color:var(--ink)}
.fld textarea{min-height:170px;resize:vertical}
.fld input:focus,.fld textarea:focus,.fld select:focus{outline:2px solid var(--navy-l);
  outline-offset:1px;border-color:var(--navy-l)}
.checks{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.checks li{margin:0}
.checks label{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:14.8px;
  color:var(--ink);margin:0;cursor:pointer}
.checks input{margin-top:6px;flex-shrink:0}
.hp{position:absolute;left:-9999px}
.fstat{padding:16px 20px;border-radius:var(--r);font-size:15px;margin-bottom:24px;
  border-left:3px solid transparent}
.fstat.ok{background:#EAF3EE;border-left-color:#1D7A55;color:#0F4A34}
.fstat.err{background:#FBEDED;border-left-color:#B4232A;color:#7A181D}

/* contact info */
.cinfo{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.cinfo div{background:#fff;padding:24px}
.cinfo dt{font-size:11.5px;letter-spacing:.12em;color:var(--gold-d);font-weight:700;
  text-transform:uppercase;font-family:var(--f-en);margin:0 0 8px}
.cinfo dd{margin:0;font-size:15.5px;color:var(--navy);font-weight:700}
.cinfo dd small{display:block;font-weight:400;font-size:13px;color:var(--muted);margin-top:5px}

/* cta band */
.cta{background:linear-gradient(160deg,#0B2440,#153A60);color:#fff;text-align:center}
.cta-in{max-width:760px;margin:0 auto;padding:74px 24px}
.cta h2{font-size:clamp(20px,2.6vw,28px);margin:0 0 18px}
.cta p{color:#CBD7E3;margin:0 0 30px;font-size:15.5px}
.cta .hero-btns{justify-content:center}

/* people */
.person{border-top:1px solid var(--line);padding:28px 0}
.person:first-of-type{border-top:0}
.person h4{font-size:17px;color:var(--navy);margin:0 0 4px}
.person .role{font-size:12px;letter-spacing:.12em;color:var(--gold-d);font-family:var(--f-en);
  text-transform:uppercase;font-weight:700;margin:0 0 14px}
.person p{font-size:14.8px;color:var(--muted);margin:0 0 .9em}
.person .quals{font-size:13.5px;color:var(--navy)}

/* footer */
.ftr{background:var(--navy-d);color:#9FB2C4;padding:56px 0 26px;font-size:14px}
.ftr-in{max-width:var(--max);margin:0 auto;padding:0 24px}
.ftr-top{display:grid;gap:36px;grid-template-columns:minmax(240px,1.2fr) 2fr;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
.ftr .mark{font-family:var(--f-en);font-weight:700;font-size:26px;color:#fff;letter-spacing:.06em}
.ftr .mark span{color:var(--gold)}
.ftr .tag2{font-size:11.5px;letter-spacing:.12em;color:#7E93A8;font-family:var(--f-en);
  margin:6px 0 18px}
.ftr address{font-style:normal;line-height:1.9;font-size:13.5px}
.ftr-nav{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.ftr-nav h3{font-size:11.5px;letter-spacing:.14em;color:#fff;text-transform:uppercase;
  font-family:var(--f-en);margin:0 0 14px}
.ftr-nav ul{list-style:none;margin:0;padding:0}
.ftr-nav li{margin-bottom:9px}
.ftr-nav a{color:#9FB2C4;font-size:13.8px}
.ftr-nav a:hover{color:#fff}
.ftr-btm{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  padding-top:22px;font-size:12.5px;color:#7E93A8}
.ftr-btm a{color:#7E93A8}

/* mobile */
@media(max-width:900px){
  .nav{position:fixed;inset:74px 0 auto;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:8px 16px 20px;border-bottom:1px solid var(--line);
    box-shadow:0 12px 28px rgba(0,0,0,.1);display:none}
  .nav a{padding:15px 8px;border-bottom:1px solid var(--line);font-size:16px}
  .nav a[aria-current="page"]{box-shadow:none;color:var(--navy);background:var(--bg-alt)}
  .burger:checked ~ .nav{display:flex}
  .burger-l{display:flex}
  .burger:checked ~ .burger-l span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger:checked ~ .burger-l span:nth-child(2){opacity:0}
  .burger:checked ~ .burger-l span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hdr-in{min-height:64px;flex-wrap:nowrap}
  .nav{inset-block-start:64px}
  .hdr-cta .btn{display:none}
  .brand .sub{display:none}
  .ftr-top{grid-template-columns:1fr}
  section{padding:56px 0}
  .hero-in{padding:64px 24px 68px}
  .tbl th{width:auto;white-space:normal}
  .tbl th,.tbl td{display:block;border-bottom:0;padding:12px 16px}
  .tbl th{padding-bottom:2px}
  .tbl td{padding-top:0;border-bottom:1px solid var(--line)}
  .tbl tr:last-child td{border-bottom:0}
}
@media print{.hdr,.ftr,.cta,.bc{display:none}}