:root{
  --ground:#FFFFFF; --paper:#FFFFFF; --mist:#E6EAF2; --haze:#D3DBE9;
  --ink:#1E2433; --text:#3A3F4A; --sub:#8A909C; --sub-read:#6B7180;
  --slate:#647390; --blue:#4F6A9A; --peri:#9CA9D6; --line:#C9D2E3;
  --glass:rgba(255,255,255,.72); --glass-2:rgba(255,255,255,.9);
  --on-fill:#FFFFFF; --warn:#9A4B5C; --ok:#3F6E66;
  --serif:"Shippori Mincho","Noto Serif JP","Yu Mincho",serif;
  --sans:"Zen Kaku Gothic New","Noto Sans JP","Hiragino Sans",sans-serif;
  --script:"Allison","Italianno",cursive;
  --latin:"Cormorant Garamond","Times New Roman",serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --ground:#15181F; --paper:#1C2029; --mist:#252B38; --haze:#2E3545;
  --ink:#E8EBF2; --text:#C9CED9; --sub:#8C93A3; --sub-read:#A2A8B6;
  --slate:#9AA8C2; --blue:#8FA6D6; --peri:#8E9BC8; --line:#343B4B;
  --glass:rgba(28,32,41,.72); --glass-2:rgba(28,32,41,.92);
  --on-fill:#15181F; --warn:#E39AAA; --ok:#8CC5BA;
}}
:root[data-theme="dark"]{
  --ground:#15181F; --paper:#1C2029; --mist:#252B38; --haze:#2E3545;
  --ink:#E8EBF2; --text:#C9CED9; --sub:#8C93A3; --sub-read:#A2A8B6;
  --slate:#9AA8C2; --blue:#8FA6D6; --peri:#8E9BC8; --line:#343B4B;
  --glass:rgba(28,32,41,.72); --glass-2:rgba(28,32,41,.92);
  --on-fill:#15181F; --warn:#E39AAA; --ok:#8CC5BA;
}
*{box-sizing:border-box}
body{background:var(--ground);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.9;letter-spacing:.06em;position:relative;overflow-x:hidden}
/* 斜めの面 */
.planes{position:absolute;inset:0;height:900px;overflow:hidden;pointer-events:none;z-index:0}
.planes i{position:absolute;display:block;background:var(--mist)}
.planes i:nth-child(1){width:520px;height:1200px;left:-260px;top:-420px;transform:rotate(32deg);opacity:.9}
.planes i:nth-child(2){width:360px;height:1100px;left:-120px;top:-520px;transform:rotate(32deg);background:var(--haze);opacity:.45}
.planes i:nth-child(3){width:620px;height:1000px;right:-420px;top:280px;transform:rotate(32deg);opacity:.7}
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 20px 64px}
/* hero */
.hero{position:relative;padding-block:88px 72px;text-align:center}
.band{background:var(--glass);margin-inline:calc(50% - 50vw);padding:56px 20px 60px;border-block:1px solid rgba(255,255,255,.6);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.label{display:inline-block;background:var(--slate);color:var(--on-fill);font-weight:500;font-size:13px;letter-spacing:.14em;padding:.45em 1.6em}
.hero h1{font-family:var(--serif);font-weight:400;color:var(--ink);font-size:clamp(30px,5.6vw,52px);letter-spacing:.16em;line-height:1.5;margin:26px 0 0;text-wrap:balance}
.title-wrap{position:relative;display:inline-block}
.script{font-family:var(--script);color:var(--slate);font-weight:400;font-size:clamp(38px,6vw,60px);line-height:1;position:absolute;right:-.6em;bottom:-.95em;transform:rotate(-8deg);white-space:nowrap;letter-spacing:.02em}
.dot{position:absolute;left:-1.4em;bottom:.2em;width:8px;height:8px;border-radius:50%;background:var(--paper);box-shadow:0 0 0 1px var(--line)}
.hero .lead{max-width:40em;margin:56px auto 0;color:var(--text);font-size:15px;text-align:left}
.legend{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 28px;font-size:13px;color:var(--sub-read);margin-top:22px}
.req{color:var(--blue);font-weight:700}
.tools{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:28px}
button{font-family:var(--sans);cursor:pointer}
.btn{border:1px solid var(--line);background:var(--paper);color:var(--text);padding:10px 22px;font-size:13px;font-weight:500;letter-spacing:.12em;border-radius:2px;transition:border-color .2s,color .2s}
.btn:hover{border-color:var(--slate);color:var(--ink)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:var(--on-fill);padding:15px 40px;font-size:14px}
.btn.primary:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.btn:focus-visible,.chip input:focus-visible+span,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.note{font-size:12.5px;color:var(--sub-read);margin-top:14px}
/* layout */
.grid{display:grid;grid-template-columns:200px minmax(0,1fr);gap:48px;align-items:start}
nav{position:sticky;top:calc(env(safe-area-inset-top,0px) + 24px);display:grid;gap:2px}
nav .total{font-family:var(--latin);font-size:14px;color:var(--sub-read);letter-spacing:.14em;margin-bottom:14px}
nav .total b{font-size:26px;font-weight:400;color:var(--ink);font-variant-numeric:tabular-nums}
nav .bar{height:1px;background:var(--line);margin-top:8px;position:relative}
nav .bar i{position:absolute;left:0;top:-1px;height:3px;background:var(--slate);width:0;transition:width .4s}
nav a{display:grid;grid-template-columns:2.2em 1fr auto;gap:6px;align-items:baseline;padding:10px 4px;color:var(--text);text-decoration:none;font-size:13.5px;border-bottom:1px solid var(--line)}
nav a .n{font-family:var(--latin);color:var(--sub-read);font-size:14px}
nav a:hover{color:var(--ink)}
nav a small{font-size:11.5px;color:var(--sub-read);font-variant-numeric:tabular-nums}
nav a.done .n,nav a.done small{color:var(--blue)}
/* sections */
section.step{background:var(--glass-2);border:1px solid var(--line);padding:56px 56px 48px;margin-bottom:32px;scroll-margin-top:24px}
.step-head{margin-bottom:28px}
.eyebrow{font-family:var(--latin);font-size:14px;letter-spacing:.24em;text-transform:uppercase;color:var(--slate)}
.step-head h2{font-family:var(--serif);font-weight:400;color:var(--ink);font-size:clamp(22px,3vw,28px);letter-spacing:.14em;margin:6px 0 0;line-height:1.5}
.step-head p{margin:14px 0 0;color:var(--text);font-size:14px;max-width:40em}
.q{display:grid;gap:10px;padding:26px 0;border-top:1px solid var(--line)}
.q>label,.q>.qlabel{font-weight:500;font-size:15px;color:var(--ink);display:flex;gap:14px;align-items:baseline;line-height:1.7}
.qno{font-family:var(--latin);font-size:15px;color:var(--slate);font-weight:500;min-width:2.4em;letter-spacing:.06em;font-variant-numeric:tabular-nums}
.hint{font-size:12.5px;color:var(--sub-read);margin:-4px 0 0 3.35em;line-height:1.8}
.field{margin-left:3.35em}
input[type=text],textarea{width:100%;font:inherit;font-size:15px;color:var(--ink);background:var(--paper);border:1px solid var(--line);padding:12px 16px;border-radius:0;letter-spacing:.04em;transition:border-color .2s}
textarea{min-height:104px;resize:vertical;line-height:1.85}
input::placeholder,textarea::placeholder{color:var(--sub);opacity:1}
input:focus,textarea:focus{border-color:var(--blue);outline:none}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chip span{display:inline-block;padding:8px 18px;background:var(--paper);color:var(--text);font-size:13.5px;border:1px solid var(--line);letter-spacing:.08em;transition:all .15s}
.chip:hover span{border-color:var(--slate)}
.chip input:checked+span{background:var(--slate);border-color:var(--slate);color:var(--on-fill)}
.color-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.color-row input[type=color]{width:52px;height:48px;border:1px solid var(--line);padding:4px;background:var(--paper);cursor:pointer}
.color-row input[type=text]{flex:1;min-width:180px}
.swatches{display:flex;gap:6px;flex-wrap:wrap}
.sw{width:26px;height:26px;border:1px solid var(--line);cursor:pointer;padding:0}
/* output */
.out{position:relative;margin-top:56px;padding:64px 56px 56px;background:var(--paper);border:1px solid var(--line);overflow:hidden}
.out::before{content:"";position:absolute;width:420px;height:900px;right:-300px;top:-260px;background:var(--mist);transform:rotate(32deg);pointer-events:none}
.out-in{position:relative}
.out h2{font-family:var(--serif);font-weight:400;color:var(--ink);font-size:clamp(22px,3vw,28px);letter-spacing:.14em;margin:6px 0 0}
.out .script{position:static;display:inline-block;font-size:44px;margin:0 0 0 .3em;vertical-align:-.2em}
.missing{border:1px solid var(--line);background:var(--paper);padding:16px 20px;font-size:13.5px;margin:28px 0 0}
.missing b{color:var(--warn);font-weight:500}
.missing a{color:var(--blue)}
.missing.ok b{color:var(--ok)}
.tabs{display:flex;gap:28px;border-bottom:1px solid var(--line);margin:32px 0 0}
.tabs button{background:none;border:0;border-bottom:1px solid transparent;padding:10px 0;font-size:14px;color:var(--sub-read);letter-spacing:.12em;margin-bottom:-1px}
.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}
.panel{padding-top:22px}
#promptBox{min-height:380px;font-size:13px;line-height:1.85;background:var(--paper)}
.sum{display:grid;gap:30px}
.sum h3{font-family:var(--serif);font-weight:400;font-size:18px;letter-spacing:.14em;margin:0 0 10px;color:var(--ink)}
.sum dl{margin:0;display:grid;grid-template-columns:minmax(120px,220px) 1fr;border-top:1px solid var(--line)}
.sum dt,.sum dd{margin:0;padding:10px 12px;border-bottom:1px solid var(--line);font-size:13.5px}
.sum dt{color:var(--sub-read)}
.sum dd{white-space:pre-wrap;color:var(--text)}
.sum dd.empty{color:var(--warn)}
.copyrow{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:18px}
#toast{font-size:13px;color:var(--ok)}
.steps-next{margin-top:36px;padding-top:28px;border-top:1px solid var(--line);font-size:14px}
.steps-next .eyebrow{margin-bottom:6px}
.steps-next ol{margin:6px 0 0;padding-left:1.4em}
.steps-next li::marker{font-family:var(--latin);color:var(--slate)}
.arrow{color:var(--peri);letter-spacing:-.1em;margin-left:.3em}
.sign{text-align:center;font-family:var(--latin);color:var(--sub);letter-spacing:.1em;font-size:14px;margin-top:64px}
@media (max-width:880px){
  .grid{grid-template-columns:1fr;gap:24px}
  nav{position:static;display:flex;overflow-x:auto;gap:4px;padding-bottom:6px}
  nav .total{display:none}
  nav a{white-space:nowrap;grid-template-columns:auto auto auto;padding:8px 12px;border:1px solid var(--line);background:var(--paper)}
}
@media (max-width:560px){
  .wrap{padding:0 16px 48px}
  .hero{padding-block:56px 48px}
  .band{padding:40px 16px 48px}
  .script{right:-.2em;bottom:-1.05em}
  section.step,.out{padding:36px 20px 32px}
  .hint,.field{margin-left:0}
  .qno{min-width:auto}
  .sum dl{grid-template-columns:1fr}
  .sum dt{border-bottom:0;padding-bottom:0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
@media print{
  nav,.tools,.out,.note,.planes{display:none!important}
  .grid{display:block}
  body{background:#fff}
  .band{background:none;margin:0}
  section.step{border:0;padding:12px 0;background:none}
  .q{break-inside:avoid}
}