/* =========================================================
   NLT矯正研究所 — 共通スタイル（全ページで読み込む）
   配色：紺（学術）＋生成り（紙）＋銅色（申込・購入の行動色）
   ========================================================= */
:root{
  --navy-900:#111c2b; --navy-800:#182639; --navy:#213552;
  --ink:#27344a; --slate:#62738a; --slate-200:#ccd5e0;
  --copper:#c2713a; --copper-ink:#9c4f1c;
  --paper:#f7f5f1; --sand:#efebe4; --mist:#eef2f7; --line:#dfe4ea; --sage:#4f7d67; --white:#fff;
  --ff-sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  --ff-serif:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
  --ff-latin:"Cormorant Garamond",Georgia,serif;
  --ff-num:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif; /* 日付・金額など読ませる数字（高さの揃った数字） */
  --container:1200px; --gutter:clamp(16px,4vw,40px); --radius:14px;
  --shadow:0 18px 50px -22px rgba(17,28,43,.38);
}
html{font-size:100%;scroll-behavior:smooth;scroll-padding-top:120px;}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}
*,*::before,*::after{box-sizing:border-box;}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--ff-sans);font-size:1rem;line-height:1.9;letter-spacing:.04em;-webkit-font-smoothing:antialiased;font-feature-settings:"palt" 1;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;}
ul,ol,dl,dd,figure{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{word-break:auto-phrase;text-wrap:balance;}
button{font:inherit;color:inherit;cursor:pointer;}
:focus-visible{outline:3px solid var(--copper);outline-offset:3px;border-radius:4px;}
.ic{width:1.25em;height:1.25em;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.container{width:min(100% - var(--gutter)*2,var(--container));margin-inline:auto;}
.container.narrow{max-width:860px;}
.pc{display:none;} @media(min-width:768px){.pc{display:inline;}}
.sp{display:inline;} @media(min-width:768px){.sp{display:none;}}

/* ---------- ボタン ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6em;min-height:52px;padding:.7em 1.7em;border-radius:999px;text-decoration:none;font-weight:500;letter-spacing:.06em;line-height:1.5;text-align:center;border:1px solid transparent;transition:background .25s,color .25s,border-color .25s;}
.btn .ic{transition:transform .25s;}
.btn:hover .ic{transform:translateX(3px);}
.btn--cta{background:var(--copper-ink);color:#fff;font-weight:700;}
.btn--cta:hover{background:#7f3d12;}
.btn--primary{background:var(--navy);color:#fff;}
.btn--primary:hover{background:var(--copper-ink);}
.btn--outline{border-color:var(--slate-200);color:var(--ink);background:#fff;}
.btn--outline:hover{border-color:var(--navy);}
.btn--light{background:#fff;color:var(--navy-800);}
.btn--light:hover{background:var(--paper);}
.btn--ghost{border-color:rgba(255,255,255,.6);color:#fff;}
.btn--ghost:hover{background:rgba(255,255,255,.12);}
.btn--sm{min-height:42px;padding:.45em 1.25em;font-size:.88rem;}
.btn--block{display:flex;width:100%;}
.more{display:inline-flex;align-items:center;gap:.5em;color:var(--copper-ink);font-weight:500;font-size:.92rem;text-decoration:none;}
.more:hover{text-decoration:underline;text-underline-offset:4px;}
.more .ic{width:1.1em;height:1.1em;transition:transform .25s;} .more:hover .ic{transform:translateX(3px);}

/* ---------- ヘッダー ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.header__top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:14px 10px;}
.brand{display:flex;flex-direction:column;text-decoration:none;line-height:1.35;}
.brand b{font-family:var(--ff-serif);font-weight:600;font-size:1.45rem;letter-spacing:.1em;color:var(--navy-800);white-space:nowrap;}
.brand span{font-size:.72rem;color:var(--slate);letter-spacing:.12em;}
.header__util{display:flex;align-items:center;gap:22px;font-size:.84rem;}
.header__util a{text-decoration:none;}
.header__util a:not(.btn){color:var(--ink);}
.header__util a:not(.btn):hover{color:var(--copper-ink);}
.header__util a.hl:not(.btn){color:var(--copper-ink);font-weight:700;}
.gnav ul{display:grid;grid-template-columns:repeat(6,1fr);}
.gnav a{display:block;text-align:center;padding:12px 6px 14px;text-decoration:none;font-size:.95rem;letter-spacing:.08em;position:relative;}
.gnav li+li a::before{content:"";position:absolute;left:0;top:50%;height:16px;border-left:1px solid var(--line);transform:translateY(-50%);}
.gnav a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--copper);transition:left .25s,right .25s;}
.gnav a:hover::after{left:18%;right:18%;}
.menu-btn{display:none;background:none;border:0;padding:4px 2px;flex-direction:column;align-items:center;gap:5px;font-size:.66rem;letter-spacing:.1em;color:var(--navy-800);}
.menu-btn i{display:block;width:26px;height:2px;background:var(--navy-800);transition:transform .25s,opacity .25s;}
.menu-open .menu-btn i:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-open .menu-btn i:nth-child(2){opacity:0;}
.menu-open .menu-btn i:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- ヒーロー ---------- */
.hero{position:relative;display:flex;min-height:clamp(520px,70vh,650px);color:#fff;background:var(--navy-900);overflow:hidden;}
.hero__bg{position:absolute;inset:0;background:url('img/lecture.jpg') 62% 40%/cover no-repeat;}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(95deg,rgba(17,28,43,.94) 0%,rgba(17,28,43,.80) 38%,rgba(17,28,43,.30) 72%,rgba(17,28,43,.42) 100%),linear-gradient(0deg,rgba(17,28,43,.55) 0%,rgba(17,28,43,0) 40%);}
.hero__inner{position:relative;z-index:3;flex:none;display:flex;flex-direction:column;justify-content:center;width:min(100% - var(--gutter)*2,1320px);margin-inline:auto;padding-block:56px 140px;}
.hero__latin{display:flex;align-items:center;gap:14px;font-family:var(--ff-serif);font-size:.95rem;letter-spacing:.2em;opacity:.9;margin-bottom:1.2rem;}
.hero__latin::before{content:"";width:34px;border-top:1px solid var(--copper);}
.hero__copy{font-family:var(--ff-serif);font-weight:500;font-size:clamp(1.9rem,4.2vw,3.3rem);line-height:1.5;letter-spacing:.1em;text-shadow:0 2px 24px rgba(0,0,0,.3);}
.hero__lead{margin-top:1.4rem;max-width:34em;font-size:clamp(.95rem,1.3vw,1.08rem);line-height:2;opacity:.95;}
.hero__btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:2rem;}

/* ---------- ヒーローに重なる「次回の開催」 ---------- */
.today{position:relative;z-index:5;margin-top:-88px;margin-bottom:clamp(36px,5vw,60px);scroll-margin-top:130px;}
.today__card{display:grid;grid-template-columns:minmax(250px,1fr) 2.6fr minmax(220px,.95fr);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.today__card>*{padding:26px 28px;}
.today__status{background:var(--navy);color:#fff;}
.today__date{font-size:.8rem;opacity:.8;letter-spacing:.1em;}
.today__title{display:flex;align-items:center;gap:10px;font-family:var(--ff-serif);font-weight:500;font-size:1.3rem;line-height:1.5;margin:6px 0 8px;}
.today__title::before{content:"";width:9px;height:9px;border-radius:50%;background:#7fd4a8;box-shadow:0 0 0 4px rgba(127,212,168,.25);flex:none;}
.today__next{font-size:.84rem;opacity:.9;line-height:1.7;}
.today__times{display:grid;grid-template-columns:repeat(4,1fr);padding-inline:14px!important;}
.today__times>div{padding:0 16px;}
.today__times>div+div{border-left:1px solid var(--line);}
.today__times dt{font-size:.76rem;color:var(--slate);letter-spacing:.1em;}
.today__times b{display:block;font-family:var(--ff-num);font-weight:600;font-size:1.6rem;line-height:1.45;color:var(--navy-800);letter-spacing:.04em;white-space:nowrap;font-variant-numeric:lining-nums tabular-nums;}
.today__times b small{font-family:var(--ff-sans);font-size:.72rem;color:var(--slate);margin-left:4px;letter-spacing:.04em;}
.today__times p{font-size:.76rem;color:var(--slate);line-height:1.6;margin-top:2px;}
.today__contact{border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:center;gap:10px;}
.today__contact p{font-size:.76rem;color:var(--slate);line-height:1.6;}
.alert{display:flex;align-items:center;gap:14px;margin-top:14px;padding:14px 22px;border-radius:10px;background:#fbf1e8;border:1px solid #f0d9c6;text-decoration:none;font-size:.88rem;line-height:1.6;}
.alert b{display:inline-flex;align-items:center;gap:6px;color:var(--copper-ink);font-size:.78rem;letter-spacing:.1em;white-space:nowrap;}
.alert strong{font-weight:700;}
.alert span{color:var(--slate);}
.alert>.ic{margin-left:auto;color:var(--copper-ink);transition:transform .25s;}
.alert:hover>.ic{transform:translateX(3px);}

/* ---------- セクション共通 ---------- */
.section{padding-block:clamp(48px,6vw,84px);}
.section--tight{padding-block:clamp(40px,5vw,64px);}
.section--sand{background:var(--sand);}
.section--paper{background:var(--paper);}
.section--navy{background:var(--navy-800);color:#fff;}
.eyebrow{display:flex;align-items:center;gap:14px;font-family:var(--ff-latin);font-style:italic;font-size:1.1rem;letter-spacing:.14em;color:var(--copper-ink);margin-bottom:.6rem;}
.eyebrow::before{content:"";width:30px;border-top:1px solid var(--copper);}
.heading{margin-bottom:clamp(20px,3vw,34px);}
.heading h2{font-family:var(--ff-serif);font-weight:500;font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.6;letter-spacing:.12em;color:var(--navy-800);}
.heading p{margin-top:14px;max-width:44em;color:var(--slate);}
.heading--center{text-align:center;}
.heading--center .eyebrow{justify-content:center;}
.heading--center .eyebrow::after{content:"";width:30px;border-top:1px solid var(--copper);}
.heading--center p{margin-inline:auto;}
.section--navy .heading h2{color:#fff;} .section--navy .heading p{color:rgba(255,255,255,.8);} .section--navy .eyebrow{color:#e9b48f;}
.note{font-size:.84rem;color:var(--slate);line-height:1.9;}
.note a,.qa a,.doc a{color:var(--copper-ink);}
.badge{display:inline-flex;align-items:center;font-size:.74rem;font-weight:700;letter-spacing:.1em;padding:3px 12px;border-radius:999px;}
.badge--open{background:#e4f2ea;color:var(--sage);}
.badge--soon{background:var(--mist);color:var(--slate);}
.badge--new{background:#fbe9d9;color:var(--copper-ink);}

/* ---------- 目的からさがす ---------- */
.guide{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.guide a{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;text-decoration:none;transition:border-color .25s,box-shadow .25s,transform .25s;}
.guide a:hover{border-color:var(--slate-200);box-shadow:var(--shadow);transform:translateY(-2px);}
.guide__ic{width:52px;height:52px;border-radius:50%;background:var(--paper);display:flex;align-items:center;justify-content:center;color:var(--copper-ink);flex:none;}
.guide__ic .ic{width:24px;height:24px;}
.guide b{display:block;font-weight:700;font-size:1.02rem;color:var(--navy-800);line-height:1.5;}
.guide small{display:block;font-size:.78rem;color:var(--slate);line-height:1.6;}
.guide a>.ic{margin-left:auto;color:var(--slate-200);width:1.1em;height:1.1em;}

/* ---------- 次回の開催（詳細） ---------- */
.seminar{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:grid;grid-template-columns:1.3fr 1fr;}
.seminar__main{padding:clamp(24px,3.4vw,44px);}
.seminar__kicker{display:flex;flex-wrap:wrap;align-items:center;gap:12px;color:var(--copper-ink);font-weight:700;font-size:.95rem;letter-spacing:.08em;}
.seminar__main h3{font-family:var(--ff-serif);font-weight:500;font-size:clamp(1.4rem,2.5vw,1.95rem);letter-spacing:.1em;line-height:1.6;color:var(--navy-800);margin:10px 0 4px;}
.seminar__sub{color:var(--slate);font-size:.9rem;}
.sched{margin-top:18px;border-top:1px solid var(--line);}
.sched>div{display:grid;grid-template-columns:128px 1fr;gap:18px;align-items:start;padding:13px 0;border-bottom:1px solid var(--line);}
.sched dt{font-family:var(--ff-num);font-size:1.5rem;font-weight:600;line-height:1.4;letter-spacing:.04em;font-variant-numeric:lining-nums tabular-nums;color:var(--navy-800);white-space:nowrap;}
.sched dt small{display:block;font-family:var(--ff-sans);font-size:.72rem;color:var(--slate);letter-spacing:.1em;}
.sched dd b{display:block;font-weight:700;color:var(--navy-800);line-height:1.6;}
.sched dd b em{font-style:normal;font-weight:500;font-size:.8rem;color:var(--copper-ink);margin-left:8px;}
.sched dd span{display:block;font-size:.86rem;color:var(--slate);line-height:1.8;}
.seminar__side{background:var(--paper);padding:clamp(24px,3.4vw,44px);border-left:1px solid var(--line);display:flex;flex-direction:column;}
.facts{display:grid;grid-template-columns:auto 1fr;gap:8px 20px;margin-bottom:20px;}
.facts dt{font-size:.78rem;color:var(--slate);letter-spacing:.1em;padding-top:3px;white-space:nowrap;}
.facts dd{color:var(--navy-800);font-weight:500;line-height:1.7;}
.facts dd b{font-family:var(--ff-num);font-size:1.3rem;font-weight:600;letter-spacing:.03em;line-height:1.3;margin-right:2px;}
.facts dd small{display:block;font-weight:400;font-size:.76rem;color:var(--slate);}
.seminar__side .note{margin:12px 0 10px;font-size:.78rem;}
.seminar__tel{margin-top:22px;text-align:center;font-size:.86rem;color:var(--slate);}
.seminar__tel a{font-family:var(--ff-num);font-weight:600;font-size:1.15rem;color:var(--navy-800);text-decoration:none;margin-left:6px;letter-spacing:.04em;}

/* ---------- 書籍 ---------- */
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.book{background:#fff;border-radius:var(--radius);padding:22px;display:grid;grid-template-columns:92px 1fr;gap:18px;align-items:start;}
.book--new{grid-column:1 / -1;grid-template-columns:180px 1fr;gap:40px;padding:clamp(22px,3vw,36px);align-items:center;box-shadow:var(--shadow);}
.book__cover img{width:100%;border-radius:2px;box-shadow:0 14px 34px -12px rgba(17,28,43,.45);}
.book__body{display:flex;flex-direction:column;align-items:flex-start;height:100%;}
.book h3{font-family:var(--ff-serif);font-weight:600;font-size:1.02rem;letter-spacing:.08em;line-height:1.6;color:var(--navy-800);margin-top:2px;}
.book--new h3{font-size:clamp(1.4rem,2.6vw,1.95rem);font-weight:500;letter-spacing:.1em;margin-top:10px;}
.book__sub{font-size:.84rem;color:var(--slate);line-height:1.7;}
.book__meta{font-size:.76rem;color:var(--slate);line-height:1.8;margin-top:8px;}
.book__desc{font-size:.84rem;line-height:1.85;margin:10px 0 12px;}
.book--new .book__desc{font-size:.98rem;max-width:36em;}
.book__price{font-family:var(--ff-num);font-size:1.45rem;font-weight:600;letter-spacing:.03em;color:var(--navy-800);line-height:1.2;margin-top:auto;}
.book__price small{font-family:var(--ff-sans);font-size:.74rem;color:var(--slate);margin-left:4px;}
.book__price--text{font-family:var(--ff-sans);font-size:.9rem;font-weight:500;}
.book__buy{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;width:100%;}
.book:not(.book--new) .book__buy .btn{flex:1 1 100%;}
.books-note{margin-top:16px;background:rgba(255,255,255,.6);border:1px dashed var(--slate-200);border-radius:12px;padding:18px 22px;}

/* ---------- 学べること ---------- */
.about__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,88px);align-items:center;}
.about__photo{position:relative;padding:0 12% 14% 0;}
.about__photo img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;}
.about__photo-sub{position:absolute;right:0;bottom:0;width:48%!important;aspect-ratio:1!important;border:8px solid #fff;box-shadow:var(--shadow);}
.about__text>p{line-height:2.1;}
.about__text>p+p{margin-top:1em;}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:24px 0 0;}
.stats>div{background:#fff;padding:14px 16px;}
.stats dt{font-size:.78rem;color:var(--slate);letter-spacing:.1em;}
.stats dd{font-size:.95rem;color:var(--navy-800);}
.stats b{font-family:var(--ff-num);font-size:1.9rem;font-weight:600;line-height:1.1;margin-right:4px;color:var(--copper-ink);}
.stats p{font-size:.74rem;color:var(--slate);}
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:22px;}
.feat__item{border-top:1px solid var(--navy);padding-top:22px;}
.feat__no{font-variant-numeric:lining-nums;font-family:var(--ff-latin);font-style:italic;font-size:1.6rem;color:var(--copper-ink);line-height:1;}
.feat__item h3{font-family:var(--ff-serif);font-weight:600;font-size:1.15rem;letter-spacing:.1em;color:var(--navy-800);margin:8px 0 8px;}
.feat__item p{font-size:.9rem;color:var(--slate);line-height:1.95;}
.feat-head{font-family:var(--ff-serif);font-weight:500;font-size:1.2rem;letter-spacing:.12em;color:var(--navy-800);margin-top:clamp(32px,4vw,52px);}
.feat-head+.feat{margin-top:22px;}

/* ---------- コース ---------- */
.course{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.course__item{background:#fff;border-radius:var(--radius);padding:28px;border-top:3px solid var(--slate-200);display:flex;flex-direction:column;align-items:flex-start;}
.course__item--open{border-top-color:var(--copper);}
.course__item h3{font-family:var(--ff-serif);font-weight:600;font-size:1.2rem;letter-spacing:.1em;color:var(--navy-800);margin:14px 0 4px;line-height:1.6;}
.course__meta{font-size:.78rem;color:var(--copper-ink);letter-spacing:.06em;margin-bottom:12px;}
.course__item p{font-size:.9rem;line-height:1.95;}
.course__item .more{margin-top:auto;padding-top:18px;}
.pillbar{display:flex;align-items:center;gap:22px;flex-wrap:wrap;background:var(--navy);color:#fff;border-radius:var(--radius);padding:22px 28px;margin-top:20px;}
.pillbar b{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.08em;white-space:nowrap;}
.pillbar p{flex:1 1 320px;font-size:.86rem;opacity:.9;line-height:1.8;}

/* ---------- 実習 ---------- */
.hands{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(28px,4vw,56px);align-items:center;}
.hands__main img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;}
.hands__list>div{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);}
.hands__list>div:first-child{border-top:1px solid var(--line);}
.hands__list dt{font-variant-numeric:lining-nums;font-family:var(--ff-latin);font-style:italic;font-size:1.5rem;color:var(--copper-ink);line-height:1.3;}
.hands__list dd b{display:block;font-weight:700;color:var(--navy-800);}
.hands__list dd span{display:block;font-size:.86rem;color:var(--slate);line-height:1.8;}
.typo{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:clamp(28px,4vw,48px);}
.typo img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;}
.typo figcaption{font-size:.78rem;color:var(--slate);margin-top:8px;text-align:center;}

/* ---------- 講師 ---------- */
.teacher{display:grid;grid-template-columns:minmax(180px,240px) 1fr;gap:clamp(28px,5vw,72px);align-items:start;}
.teacher__photo img{border-radius:var(--radius);width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center 18%;}
.teacher__role{font-size:.8rem;color:var(--copper-ink);letter-spacing:.14em;}
.teacher h3{font-family:var(--ff-serif);font-weight:500;font-size:2rem;letter-spacing:.16em;color:var(--navy-800);line-height:1.5;}
.teacher h3 small{font-family:var(--ff-sans);font-size:.82rem;color:var(--slate);letter-spacing:.1em;margin-left:14px;}
.teacher__text>p{margin-top:12px;line-height:2;font-size:.95rem;}
.pubs{margin-top:22px;border-top:1px solid var(--line);}
.pubs>div{display:grid;grid-template-columns:90px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:.88rem;}
.pubs dt{color:var(--slate);font-size:.78rem;letter-spacing:.1em;padding-top:2px;}
.pubs dd{line-height:1.9;}
.staff{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:clamp(24px,3vw,36px);}
.staff__item{display:flex;gap:20px;align-items:center;background:#fff;border-radius:var(--radius);padding:22px 24px;}
.staff__item img,.staff__ph{width:84px;height:84px;border-radius:50%;object-fit:cover;flex:none;}
.staff__ph{background:var(--paper);display:flex;align-items:center;justify-content:center;color:var(--slate-200);}
.staff__ph .ic{width:38px;height:38px;}
.staff__item h4{font-family:var(--ff-serif);font-weight:600;font-size:1.15rem;letter-spacing:.14em;color:var(--navy-800);}
.staff__item p{font-size:.84rem;color:var(--slate);line-height:1.8;}

/* ---------- 動画（棚） ---------- */
.vhead{display:grid;grid-template-columns:1fr auto;gap:clamp(20px,4vw,56px);align-items:end;}
.vhead__btns{display:flex;flex-direction:column;gap:10px;}
.vshelf{display:grid;grid-template-columns:repeat(4,1fr);gap:18px 16px;margin-top:clamp(22px,3vw,34px);}
.vshelf a{display:block;text-decoration:none;color:#fff;}
.vshelf__thumb{position:relative;display:block;border-radius:10px;overflow:hidden;background:#0b1320;}
.vshelf__thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s,opacity .25s;}
.vshelf a:hover .vshelf__thumb img{transform:scale(1.04);opacity:.85;}
.vshelf__play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:rgba(17,28,43,.55);display:flex;align-items:center;justify-content:center;color:#fff;transition:background .25s;}
.vshelf__play .ic{width:26px;height:26px;}
.vshelf a:hover .vshelf__play{background:var(--copper-ink);}
.vshelf__time{position:absolute;right:6px;bottom:6px;background:rgba(0,0,0,.72);color:#fff;font-size:.72rem;letter-spacing:.04em;line-height:1;padding:4px 6px;border-radius:4px;font-variant-numeric:tabular-nums;}
.vshelf__meta{display:flex;align-items:flex-start;gap:8px;margin-top:9px;}
.vshelf__meta b{font-weight:500;font-size:.9rem;line-height:1.5;}
.badge--free{background:#7fd4a8;color:#0d3b28;flex:none;padding:2px 9px;}
.badge--paid{background:rgba(255,255,255,.16);color:rgba(255,255,255,.85);flex:none;padding:2px 9px;}
.section--navy .note{color:rgba(255,255,255,.65);margin-top:18px;}

/* ---------- FAQ ---------- */
.qa{border-bottom:1px solid var(--line);}
.qa:first-of-type{border-top:1px solid var(--line);}
.qa summary{cursor:pointer;padding:17px 48px 17px 44px;font-weight:500;color:var(--navy-800);list-style:none;position:relative;line-height:1.7;}
.qa summary::-webkit-details-marker{display:none;}
.qa summary::before{content:"Q";position:absolute;left:4px;top:11px;font-family:var(--ff-latin);font-style:italic;font-size:1.5rem;color:var(--copper-ink);}
.qa summary::after{content:"";position:absolute;right:10px;top:50%;width:10px;height:10px;border-right:1.6px solid var(--slate);border-bottom:1.6px solid var(--slate);transform:translateY(-70%) rotate(45deg);transition:transform .25s;}
.qa[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.qa p{padding:0 48px 24px 44px;font-size:.94rem;line-height:2;}

/* ---------- 会場 ---------- */
.venue{display:grid;grid-template-columns:1fr minmax(280px,460px);gap:clamp(28px,5vw,72px);align-items:center;}
.venue h3{font-family:var(--ff-serif);font-weight:500;font-size:1.6rem;letter-spacing:.14em;color:var(--navy-800);}
.venue dl{margin:18px 0 22px;border-top:1px solid var(--line);}
.venue dl>div{display:grid;grid-template-columns:90px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:.94rem;}
.venue dt{color:var(--slate);font-size:.78rem;letter-spacing:.1em;padding-top:3px;}
.venue img{border-radius:var(--radius);border:1px solid var(--line);width:100%;}

/* ---------- 最後のCTA・フッター ---------- */
.cta{position:relative;background:var(--navy-800);color:#fff;text-align:center;overflow:hidden;}
.cta::before{content:"";position:absolute;inset:0;background:url('img/handson-desk.jpg') center/cover;opacity:.14;}
.cta .container{position:relative;}
.cta h2{font-family:var(--ff-serif);font-weight:500;font-size:clamp(1.5rem,3vw,2.2rem);letter-spacing:.12em;line-height:1.7;}
.cta p{margin-top:12px;opacity:.9;}
.cta .hero__btns{justify-content:center;}
.footer{background:var(--navy-900);color:rgba(255,255,255,.78);padding-block:56px 34px;font-size:.86rem;}
.footer__grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:32px;}
.footer__brand b{display:block;font-family:var(--ff-serif);font-weight:600;font-size:1.3rem;letter-spacing:.12em;color:#fff;margin-bottom:10px;}
.footer__nav{display:grid;grid-template-columns:repeat(2,auto);gap:6px 44px;align-content:start;}
.footer a{color:rgba(255,255,255,.86);text-decoration:none;}
.footer a:hover{text-decoration:underline;text-underline-offset:4px;}
.footer__copy{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);font-size:.74rem;color:rgba(255,255,255,.5);letter-spacing:.1em;}

/* ---------- 下層ページ ---------- */
.phead{background:var(--navy-800);color:#fff;padding-block:clamp(48px,7vw,84px);}
.phead .eyebrow{color:#e9b48f;}
.phead h1{font-family:var(--ff-serif);font-weight:500;font-size:clamp(1.6rem,3.2vw,2.3rem);letter-spacing:.14em;}
.doc h2{font-family:var(--ff-serif);font-weight:600;font-size:1.15rem;letter-spacing:.1em;color:var(--navy-800);margin:36px 0 10px;padding-left:14px;border-left:3px solid var(--copper);}
.doc p{margin-top:12px;}
.doc ul{margin:12px 0 0;}
.doc li{position:relative;padding-left:18px;margin-top:6px;}
.doc li::before{content:"";position:absolute;left:2px;top:.9em;width:6px;height:6px;border-radius:50%;background:var(--slate-200);}
.doc dl.tbl{border-top:1px solid var(--line);margin-top:20px;}
.doc dl.tbl>div{display:grid;grid-template-columns:210px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line);font-size:.94rem;}
.doc dl.tbl dt{color:var(--navy-800);font-weight:500;}
.form{background:var(--paper);border-radius:var(--radius);padding:clamp(22px,3.4vw,40px);margin-top:28px;}
.form label{display:block;font-weight:500;color:var(--navy-800);font-size:.92rem;margin:20px 0 8px;}
.form label:first-child{margin-top:0;}
.form .req{color:#b03a2e;font-size:.72rem;margin-left:8px;letter-spacing:.1em;}
.form input,.form textarea{width:100%;font:inherit;font-size:16px;letter-spacing:.02em;padding:12px 14px;border:1px solid var(--slate-200);border-radius:8px;background:#fff;color:var(--ink);}
.form textarea{min-height:180px;resize:vertical;}
.form input:focus,.form textarea:focus{outline:2px solid var(--copper);outline-offset:1px;border-color:var(--copper);}
.form .btn{margin-top:26px;border:0;}

/* ---------- スマホ下部の固定バー ---------- */
.mbar{display:none;}

/* ---------- レスポンシブ ---------- */
@media(max-width:1000px){
  .today__card{grid-template-columns:1fr;}
  .today__contact{border-left:0;border-top:1px solid var(--line);}
  .today__times{grid-template-columns:repeat(2,1fr);gap:18px 0;}
  .today__times>div:nth-child(3){border-left:0;}
  .seminar,.about__grid,.hands,.teacher,.venue,.vhead{grid-template-columns:1fr;}
  .vhead__btns{flex-direction:row;flex-wrap:wrap;}
  .seminar__side{border-left:0;border-top:1px solid var(--line);}
  .guide{grid-template-columns:repeat(2,1fr);}
  .course{grid-template-columns:1fr;}
  .books{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .teacher__photo{max-width:260px;}
}
@media(max-width:767px){
  html{scroll-padding-top:76px;}
  .header__top{padding-block:10px;}
  .brand b{font-size:1.15rem;}
  .brand span{font-size:.66rem;}
  .header__util{display:none;}
  .menu-btn{display:flex;}
  .gnav{display:none;border-top:1px solid var(--line);}
  .menu-open .gnav{display:block;}
  .gnav ul{grid-template-columns:1fr;}
  .gnav a{text-align:left;padding:15px 4px;border-bottom:1px solid var(--line);}
  .gnav li+li a::before,.gnav a::after{display:none;}
  .gnav .sp-only{display:block;}
  .hero{min-height:0;}
  .hero__bg{background-position:66% 30%;}
  .hero::after{background:linear-gradient(180deg,rgba(17,28,43,.55) 0%,rgba(17,28,43,.82) 46%,rgba(17,28,43,.96) 100%);}
  .hero__inner{justify-content:flex-end;padding-block:64px 112px;}
  .hero__copy{letter-spacing:.04em;font-size:clamp(1.3rem,6.4vw,1.75rem);}
  .hero__btns .btn{flex:1 1 auto;}
  .today__card>*{padding:20px;}
  .today__times{padding-inline:8px!important;}
  .today__times>div{padding:0 12px;}
  .today__times b{font-size:1.5rem;}
  .alert{flex-wrap:wrap;gap:6px 12px;padding:14px 16px;}
  .alert span{flex:1 1 100%;}
  .alert>.ic{display:none;}
  .feat{grid-template-columns:1fr;gap:0;}
  .feat__item{display:grid;grid-template-columns:auto 1fr;column-gap:14px;padding:14px 0;}
  .feat__item p:last-child{grid-column:2;}
  .feat__item h3{margin:0 0 4px;font-size:1.02rem;}
  .feat__no{font-size:1.3rem;}
  .guide{gap:10px;}
  .guide a{flex-direction:column;text-align:center;gap:10px;padding:18px 10px;}
  .guide small,.guide a>.ic{display:none;}
  .guide b{font-size:.92rem;}
  .sched>div{grid-template-columns:86px 1fr;gap:12px;}
  .sched dt{font-size:1.25rem;}
  .book{grid-template-columns:84px 1fr;gap:14px;padding:18px;}
  .book--new{grid-template-columns:104px 1fr!important;gap:16px!important;align-items:start;}
  .book--new h3{font-size:1.2rem;margin-top:8px;}
  .book--new .book__desc{font-size:.86rem;}
  .book__buy .btn{flex:1 1 100%;}
  .typo{grid-template-columns:1fr 1fr 1fr;gap:8px;}
  .typo figcaption{font-size:.68rem;}
  .staff{grid-template-columns:1fr;gap:10px;}
  .book:not(.book--new) .book__desc,.book:not(.book--new) .book__meta{display:none;}
  .book__buy{gap:8px;}
  .book:not(.book--new) .book__buy .btn{flex:1 1 100%;min-height:40px;}
  .book__price{font-size:1.2rem;}
  .book__price--text{font-size:.82rem;}
  .about__photo{padding:0;}
  .about__photo img{aspect-ratio:16/9;}
  .about__photo-sub{display:none;}
  .about__grid{gap:22px;}
  .about__text>p{line-height:1.95;font-size:.95rem;}
  .stats>div{padding:12px 14px;}
  .course{gap:12px;}
  .course__item{padding:20px;}
  .course__item p:not(.course__meta){display:none;}
  .course__item .more{padding-top:6px;}
  .course__meta{margin-bottom:0;}
  .teacher{grid-template-columns:104px 1fr!important;gap:16px;align-items:center;}
  .teacher__photo{max-width:none;}
  .teacher h3{font-size:1.45rem;}
  .teacher h3 small{display:block;margin-left:0;}
  .teacher__text{display:contents;}
  .teacher__text>p:not(.teacher__role),.teacher__text>.pubs{grid-column:1 / -1;margin-top:0;}
  .teacher__name{grid-column:2;}
  .venue{gap:18px;}
  .footer{padding-block:36px 26px;}
  .footer__copy{margin-top:24px;}
  .seminar__main,.seminar__side{padding:20px;}
  .staff__item{padding:18px;}
  .pillbar{padding:20px;}
  .pillbar .btn{width:100%;}
  .vhead__btns .btn{flex:1 1 100%;}
  /* 動画は横に流して見せる（縦に積まない） */
  .vshelf{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;margin-inline:calc(var(--gutter)*-1);padding-inline:var(--gutter);scrollbar-width:none;}
  .vshelf::-webkit-scrollbar{display:none;}
  .vshelf li{flex:0 0 62%;scroll-snap-align:start;}
  .hero__btns .btn--light{flex:1 1 100%;}
  .hero__btns .btn--ghost{flex:1 1 0;padding-inline:.8em;font-size:.92rem;}
  .qa summary{padding:18px 34px 18px 38px;} .qa p{padding:0 8px 20px 38px;}
  .doc dl.tbl>div{grid-template-columns:1fr;gap:4px;}
  .footer__nav{grid-template-columns:1fr;}
  .mbar{display:grid;grid-template-columns:1fr 1fr 1.5fr;position:fixed;left:0;right:0;bottom:0;z-index:60;box-shadow:0 -6px 20px rgba(17,28,43,.18);}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:6px;min-height:54px;font-weight:700;font-size:.88rem;text-decoration:none;letter-spacing:.08em;}
  .mbar__book{background:var(--navy);color:#fff;}
  .mbar__video{background:var(--navy-800);color:#fff;border-left:1px solid rgba(255,255,255,.18);}
  .mbar__apply{background:var(--copper-ink);color:#fff;}
  body{padding-bottom:54px;}
}
@media(min-width:768px){.gnav .sp-only{display:none;}}

/* ---------- 押すと開く（詳細は畳んでスクロールを短く） ---------- */
.fold{margin-top:14px;}
.fold>summary{list-style:none;cursor:pointer;display:flex;justify-content:center;}
.fold>summary::-webkit-details-marker{display:none;}
.fold>summary span{display:inline-flex;align-items:center;gap:10px;min-height:46px;padding:.5em 1.5em;border:1px solid var(--slate-200);border-radius:999px;background:#fff;color:var(--navy-800);font-weight:500;font-size:.9rem;letter-spacing:.06em;transition:border-color .25s;}
.fold>summary span::before{content:"＋";display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--copper-ink);color:#fff;font-size:.8rem;font-weight:700;line-height:1;flex:none;}
.fold[open]>summary span::before{content:"－";}
.fold>summary:hover span{border-color:var(--navy);}
.fold[open]>summary{margin-bottom:18px;}
.fold .seminar{box-shadow:none;border:1px solid var(--line);}
.fold .hands{margin-top:6px;}
.feat-lead{margin-top:clamp(28px,4vw,48px);max-width:46em;}
.feat-lead p{line-height:2.05;}
.feat-lead p+p{margin-top:.6em;}