/*
Theme Name: nico 大津
Theme URI:
Description: 児童発達支援・放課後等デイサービス「nico大津」公式サイト用テーマ。ブログ機能対応。
Author: nico
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nico
*/

/* =========================================================
   nico 大津 — style.css
   児童発達支援・放課後等デイサービス
   Brand: smile yellow / navy / peach flower / leaf green
   ========================================================= */

:root{
  --yellow:#FCD000;
  --yellow-soft:#FFE680;
  --navy:#2A4B8D;
  --navy-deep:#22407c;
  --peach:#F2A86B;
  --peach-soft:#FBD9BC;
  --green:#9DC08B;
  --cream:#FFFCF4;
  --cream-2:#FFF6E4;
  --ink:#4B453B;
  --ink-soft:#857E70;
  --line:#EFE7D6;
  --white:#fff;
  --radius:26px;
  --radius-sm:16px;
  --shadow:0 18px 40px -22px rgba(74,67,45,.35);
  --shadow-soft:0 10px 30px -20px rgba(74,67,45,.4);
  --maxw:1120px;
  --font-jp:"M PLUS Rounded 1c",-apple-system,"Hiragino Maru Gothic ProN","Hiragino Sans",sans-serif;
  --font-en:"Kaushan Script",cursive;
  --font-num:"Quicksand",sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:80px;}
body{
  margin:0;
  font-family:var(--font-jp);
  color:var(--ink);
  background:var(--cream);
  line-height:1.9;
  font-weight:500;
  -webkit-font-smoothing:antialiased;
  letter-spacing:.02em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;margin:0;padding:0;}

.container{width:90%;max-width:var(--maxw);margin-inline:auto;}
.container.narrow{max-width:840px;}
.center{text-align:center;}
.sp-hide{display:inline;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  padding:.85em 1.8em;border-radius:999px;font-weight:700;font-family:var(--font-jp);
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
  cursor:pointer;border:2px solid transparent;font-size:.98rem;
}
.btn-lg{font-size:1.1rem;padding:1em 2.2em;}
.btn-primary{background:var(--yellow);color:var(--navy-deep);box-shadow:0 10px 22px -10px rgba(252,208,0,.8);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 26px -10px rgba(252,208,0,.9);}
.btn-ghost{background:var(--white);color:var(--navy);border-color:var(--peach-soft);box-shadow:var(--shadow-soft);}
.btn-ghost:hover{transform:translateY(-3px);border-color:var(--peach);}

/* ---------- section heads ---------- */
.label{
  font-family:var(--font-en);color:var(--peach);
  font-size:1.9rem;line-height:1;margin:0 0 .15em;text-transform:lowercase;
}
.ja-title{
  font-size:clamp(1.5rem,4vw,2.1rem);font-weight:800;color:var(--navy-deep);
  margin:0;letter-spacing:.06em;
}
.sec-head{margin-bottom:46px;}
.sec-note{color:var(--ink-soft);margin-top:.7em;font-size:.95rem;}
.section{padding:clamp(60px,9vw,110px) 0;position:relative;}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(255,252,244,.86);backdrop-filter:blur(10px);
  transition:box-shadow .25s ease, background .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 24px -16px rgba(74,67,45,.5);background:rgba(255,252,244,.96);}
.header-inner{
  width:92%;max-width:1240px;margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;height:72px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-logo{height:30px;width:auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-weight:800;color:var(--navy-deep);font-size:1.05rem;letter-spacing:.04em;}
.brand-sub{font-size:.66rem;color:var(--ink-soft);letter-spacing:.02em;}
.gnav{display:flex;align-items:center;gap:6px;}
.gnav a{padding:.5em .85em;font-size:.92rem;font-weight:700;color:var(--ink);border-radius:999px;transition:color .2s,background .2s;}
.gnav a:hover{color:var(--navy);background:var(--cream-2);}
.gnav .nav-cta{background:var(--navy);color:#fff;margin-left:6px;}
.gnav .nav-cta:hover{background:var(--navy-deep);color:#fff;}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:42px;height:42px;border:0;background:transparent;cursor:pointer;padding:8px;}
.nav-toggle span{height:3px;border-radius:3px;background:var(--navy-deep);transition:transform .3s,opacity .3s;}
.nav-toggle.active span:nth-child(1){transform:translateY(8px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:140px 0 80px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  width:92%;max-width:1240px;margin-inline:auto;
  min-height:88vh;
}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(120% 80% at 80% 0%, var(--cream-2) 0%, transparent 60%),
    linear-gradient(180deg,#FFFDF7 0%, var(--cream) 100%);
}
.hero-deco{position:absolute;z-index:-1;background:url('img/flower.svg') no-repeat center/contain;opacity:.85;}
.deco-a{width:150px;height:150px;top:90px;right:46%;transform:rotate(-8deg);}
.deco-b{width:90px;height:90px;bottom:40px;left:-20px;opacity:.55;transform:rotate(12deg);}
.hero-eyebrow{
  display:inline-block;background:var(--white);color:var(--navy);
  font-weight:700;font-size:.85rem;padding:.4em 1.1em;border-radius:999px;
  box-shadow:var(--shadow-soft);margin:0 0 22px;
}
.hero-title{
  font-size:clamp(2rem,5.4vw,3.4rem);font-weight:800;color:var(--navy-deep);
  line-height:1.35;margin:0 0 24px;letter-spacing:.02em;
}
.hero-title span{display:block;}
.hero-title span:nth-child(2){color:var(--peach);}
.hero-lead{font-size:1.02rem;color:var(--ink);margin:0 0 32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-photo{position:relative;}
.hero-photo img{
  width:100%;aspect-ratio:4/3.4;object-fit:cover;border-radius:40px;
  box-shadow:var(--shadow);border:6px solid #fff;
}
.hero-photo::after{
  content:"";position:absolute;width:120px;height:120px;right:-26px;bottom:-26px;
  background:url('img/flower.svg') no-repeat center/contain;transform:rotate(6deg);
}

/* ---------- concept ---------- */
.concept{background:linear-gradient(180deg,var(--cream) 0%, #fff 100%);}
.concept-catch{
  font-size:clamp(1.4rem,3.6vw,2.1rem);font-weight:800;color:var(--navy-deep);
  line-height:1.7;margin:.3em 0 .8em;
}
.concept-catch::before,.concept-catch::after{content:"";display:inline-block;
  width:30px;height:30px;background:url('img/flower.svg') center/contain no-repeat;
  vertical-align:middle;margin:0 .4em;}
.concept-sub{color:var(--peach);font-weight:700;font-size:clamp(1rem,2.4vw,1.18rem);margin:0 0 1.4em;}
.concept-text{color:var(--ink-soft);font-size:1.02rem;}

/* ---------- service ---------- */
.service{background:var(--cream-2);}
.service-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;}
.service-card{
  background:#fff;border-radius:var(--radius);padding:42px 38px;position:relative;
  box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;top:-30px;right:-30px;width:120px;height:120px;
  border-radius:50%;background:var(--cream-2);
}
.service-tag{
  position:relative;display:inline-block;font-family:var(--font-num);font-weight:700;
  color:#fff;font-size:.82rem;padding:.3em 1em;border-radius:999px;margin-bottom:14px;letter-spacing:.06em;
}
.tag-a{background:var(--peach);}
.tag-b{background:var(--green);}
.service-card h3{position:relative;font-size:1.45rem;color:var(--navy-deep);margin:0 0 .2em;font-weight:800;}
.service-age{position:relative;color:var(--peach);font-weight:700;font-size:.92rem;margin:0 0 1em;}
.service-desc{position:relative;color:var(--ink);font-size:.96rem;margin:0 0 1.4em;}
.service-time{position:relative;display:grid;gap:10px;border-top:2px dotted var(--line);padding-top:1.2em;}
.service-time div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;}
.service-time dt{color:var(--ink-soft);font-size:.86rem;}
.service-time dd{margin:0;font-weight:700;color:var(--navy);font-family:var(--font-num);font-size:1.02rem;}

/* ---------- policy ---------- */
.policy-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.policy-item{
  background:#fff;border-radius:var(--radius-sm);padding:32px 30px;position:relative;
  box-shadow:var(--shadow-soft);border:1px solid var(--line);
}
.policy-num{
  font-family:var(--font-num);font-weight:700;font-size:2.1rem;color:var(--yellow);
  -webkit-text-stroke:1px var(--peach);line-height:1;display:block;margin-bottom:.2em;
}
.policy-item h3{font-size:1.18rem;color:var(--navy-deep);margin:0 0 .4em;font-weight:800;}
.policy-item p{margin:0;color:var(--ink-soft);font-size:.93rem;}

/* ---------- schedule ---------- */
.schedule{background:var(--cream-2);}
.schedule-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;}
.schedule-col{background:#fff;border-radius:var(--radius);padding:38px 34px;box-shadow:var(--shadow);border:1px solid var(--line);}
.schedule-name{
  text-align:center;color:#fff;background:var(--navy);font-size:1.1rem;font-weight:800;
  padding:.55em 1em;border-radius:999px;margin:0 0 30px;letter-spacing:.04em;
}
.timeline{position:relative;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:repeating-linear-gradient(var(--peach) 0 6px,transparent 6px 12px);}
.timeline li{position:relative;padding-bottom:24px;}
.timeline li:last-child{padding-bottom:0;}
.t-dot{position:absolute;left:-30px;top:5px;width:17px;height:17px;border-radius:50%;
  background:var(--yellow);border:3px solid #fff;box-shadow:0 0 0 2px var(--peach);}
.timeline b{display:block;color:var(--navy-deep);font-size:1.02rem;}
.timeline p{margin:.15em 0 0;color:var(--ink-soft);font-size:.88rem;line-height:1.7;}

/* ---------- program ---------- */
.program-chips{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:46px;}
.program-chips li{
  background:#fff;border:2px solid var(--peach-soft);color:var(--navy);font-weight:700;
  padding:.5em 1.3em;border-radius:999px;font-size:.95rem;box-shadow:var(--shadow-soft);
}
.program-chips li:nth-child(3n){border-color:var(--yellow-soft);}
.program-chips li:nth-child(3n+1){border-color:#C9E0BC;}
.program-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.program-note{background:var(--cream-2);border-radius:var(--radius-sm);padding:30px 28px;text-align:center;}
.program-note h3{color:var(--navy-deep);font-size:1.12rem;margin:0 0 .4em;font-weight:800;}
.program-note p{margin:0;color:var(--ink-soft);font-size:.9rem;}

/* ---------- room ---------- */
.room{background:var(--cream-2);}
.room-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:1fr;gap:18px;}
.room-card{margin:0;position:relative;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-soft);border:4px solid #fff;}
.room-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:1;transition:transform .5s ease;}
.room-card.big{grid-column:span 2;grid-row:span 2;}
.room-card.big img{aspect-ratio:auto;}
.room-card:hover img{transform:scale(1.06);}
.room-card figcaption{
  position:absolute;left:0;bottom:0;width:100%;padding:14px 16px;color:#fff;font-weight:700;
  background:linear-gradient(transparent,rgba(34,64,124,.78));font-size:.95rem;
}
.room-card figcaption span{display:block;font-weight:500;font-size:.78rem;opacity:.9;}

/* ---------- overview ---------- */
.overview-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-soft);}
.overview-table th,.overview-table td{padding:18px 24px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;}
.overview-table tr:last-child th,.overview-table tr:last-child td{border-bottom:0;}
.overview-table th{width:30%;background:var(--cream-2);color:var(--navy-deep);font-weight:800;white-space:nowrap;}
.overview-table td{color:var(--ink);}

/* ---------- follow ---------- */
.follow-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.follow-steps li{
  background:#fff;border-radius:var(--radius-sm);padding:30px 24px;position:relative;
  box-shadow:var(--shadow-soft);border:1px solid var(--line);
}
.follow-steps li:not(:last-child)::after{
  content:"";position:absolute;right:-15px;top:50%;width:22px;height:22px;z-index:2;
  background:var(--yellow);border-radius:50%;transform:translateY(-50%);
  box-shadow:0 0 0 4px var(--cream);
}
.step-no{font-family:var(--font-num);font-weight:700;color:var(--peach);font-size:.85rem;letter-spacing:.08em;}
.follow-steps h3{font-size:1.08rem;color:var(--navy-deep);margin:.3em 0 .4em;font-weight:800;}
.follow-steps p{margin:0;color:var(--ink-soft);font-size:.88rem;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-bottom:40px;}
.news-card{background:#fff;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-soft);border:1px solid var(--line);transition:transform .25s ease,box-shadow .25s ease;}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.news-card a{display:block;}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-meta{display:flex;align-items:center;gap:10px;padding:18px 22px 0;}
.news-meta time{font-family:var(--font-num);font-weight:700;color:var(--ink-soft);font-size:.85rem;}
.news-cat{background:var(--cream-2);color:var(--navy);font-size:.72rem;font-weight:700;padding:.2em .8em;border-radius:999px;}
.news-card h3{margin:.5em 22px .3em;font-size:1.08rem;color:var(--navy-deep);font-weight:800;line-height:1.5;}
.news-card p{margin:0 22px 22px;color:var(--ink-soft);font-size:.88rem;}

/* ---------- access ---------- */
.access{background:var(--cream-2);}
.access-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:stretch;}
.access-info{background:#fff;border-radius:var(--radius);padding:40px 38px;box-shadow:var(--shadow);border:1px solid var(--line);}
.access-name{font-size:1.4rem;font-weight:800;color:var(--navy-deep);margin:0 0 .3em;}
.access-addr{color:var(--ink);margin:0 0 1.2em;line-height:1.8;}
.access-bldg{display:flex;flex-direction:column;gap:10px;margin-bottom:1.4em;}
.access-bldg li{display:flex;align-items:center;gap:12px;font-weight:700;color:var(--navy);}
.badge{color:#fff;font-family:var(--font-num);font-weight:700;font-size:.78rem;padding:.25em .9em;border-radius:999px;}
.access-contact{display:grid;gap:10px;border-top:2px dotted var(--line);padding-top:1.3em;margin-bottom:1.6em;}
.access-contact div{display:flex;gap:16px;align-items:baseline;}
.access-contact dt{width:48px;color:var(--ink-soft);font-size:.82rem;font-weight:700;}
.access-contact dd{margin:0;font-weight:700;color:var(--navy-deep);font-family:var(--font-num);font-size:1.1rem;}
.access-map{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);min-height:360px;border:6px solid #fff;}
.access-map iframe{display:block;height:100%;min-height:360px;}

/* ---------- contact ---------- */
.contact{background:var(--cream);}
.contact-card{
  background:linear-gradient(135deg,var(--yellow) 0%,#FFDD55 100%);
  border-radius:40px;padding:60px 40px;position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.contact-card::before,.contact-card::after{
  content:"";position:absolute;background:url('img/flower.svg') center/contain no-repeat;opacity:.5;}
.contact-card::before{width:120px;height:120px;top:-30px;left:-20px;}
.contact-card::after{width:90px;height:90px;bottom:-20px;right:10px;transform:rotate(20deg);}
.contact-card .label{color:#fff;}
.contact-card .ja-title{color:var(--navy-deep);}
.contact-text{color:var(--navy-deep);font-weight:600;margin:1em 0 1.8em;}
.contact-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.contact-card .btn-primary{background:var(--navy);color:#fff;box-shadow:0 12px 24px -10px rgba(34,64,124,.6);}
.contact-card .btn-primary:hover{background:var(--navy-deep);}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-deep);color:#fff;padding:54px 0 28px;}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:22px;text-align:center;}
.footer-logo{height:34px;filter:brightness(0) invert(1);opacity:.95;}
.footer-brand p{margin:.7em 0 0;font-size:.9rem;opacity:.85;line-height:1.7;}
.footer-nav{display:flex;flex-wrap:wrap;gap:6px 22px;justify-content:center;}
.footer-nav a{font-size:.9rem;opacity:.85;transition:opacity .2s;}
.footer-nav a:hover{opacity:1;}
.copyright{font-family:var(--font-num);font-size:.8rem;opacity:.6;margin:0;}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;
  background:var(--navy);color:#fff;display:grid;place-items:center;font-size:1.2rem;
  box-shadow:var(--shadow);z-index:40;opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s,transform .3s;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width:980px){
  .hero{grid-template-columns:1fr;text-align:center;min-height:auto;padding-top:120px;}
  .hero-actions{justify-content:center;}
  .deco-a{right:8%;top:80px;width:110px;height:110px;}
  .hero-photo{max-width:520px;margin-inline:auto;}
  .access-grid{grid-template-columns:1fr;}
  .program-notes{grid-template-columns:1fr;}
}
@media (max-width:820px){
  .nav-toggle{display:flex;}
  .gnav{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;gap:0;
    background:rgba(255,252,244,.98);backdrop-filter:blur(10px);
    padding:10px 0 18px;box-shadow:0 16px 30px -20px rgba(0,0,0,.4);
    max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;
  }
  .gnav.open{max-height:430px;}
  .gnav a{width:84%;text-align:center;padding:.9em;border-radius:14px;}
  .gnav .nav-cta{margin:8px 0 0;}
  .service-grid,.schedule-grid{grid-template-columns:1fr;}
  .policy-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .follow-steps{grid-template-columns:1fr 1fr;}
  .follow-steps li:not(:last-child)::after{display:none;}
  .room-grid{grid-template-columns:repeat(2,1fr);}
  .room-card.big{grid-column:span 2;grid-row:auto;}
  .room-card.big img{aspect-ratio:16/10;}
}
@media (max-width:560px){
  .sp-hide{display:none;}
  .news-grid{grid-template-columns:1fr;}
  .follow-steps{grid-template-columns:1fr;}
  .room-grid{grid-template-columns:1fr 1fr;}
  .service-card,.schedule-col,.access-info{padding:30px 24px;}
  .hero-photo::after{width:80px;height:80px;right:-10px;bottom:-14px;}
  .overview-table th{width:38%;padding:14px 16px;}
  .overview-table td{padding:14px 16px;}
  .contact-card{padding:44px 24px;}
}

/* =========================================================
   Single post (blog) — single.php
   ========================================================= */
.single-main{padding:130px 0 90px;background:var(--cream);min-height:60vh;}
.single-post{
  background:#fff;border-radius:var(--radius);padding:clamp(28px,5vw,60px);
  box-shadow:var(--shadow-soft);border:1px solid var(--line);
}
.single-post .label{font-size:1.6rem;}
.single-meta{display:flex;gap:12px;align-items:center;margin-bottom:.3em;flex-wrap:wrap;}
.single-meta time{font-family:var(--font-num);font-weight:700;color:var(--ink-soft);font-size:.9rem;}
.single-title{
  font-size:clamp(1.5rem,4vw,2.1rem);color:var(--navy-deep);font-weight:800;
  line-height:1.5;margin:.1em 0 1em;
}
.single-thumb{border-radius:var(--radius-sm);overflow:hidden;margin-bottom:1.6em;border:4px solid #fff;box-shadow:var(--shadow-soft);}
.single-body{line-height:2;color:var(--ink);}
.single-body > *:first-child{margin-top:0;}
.single-body h2{color:var(--navy-deep);font-size:1.4rem;margin:1.7em 0 .6em;font-weight:800;}
.single-body h3{color:var(--navy-deep);font-size:1.18rem;margin:1.5em 0 .5em;font-weight:800;}
.single-body p{margin:0 0 1.3em;}
.single-body a{color:var(--navy);text-decoration:underline;}
.single-body ul,.single-body ol{margin:0 0 1.3em;padding-left:1.4em;}
.single-body ul{list-style:disc;}
.single-body ol{list-style:decimal;}
.single-body li{margin-bottom:.4em;}
.single-body img{border-radius:var(--radius-sm);margin:1em 0;height:auto;}
.single-body blockquote{
  border-left:4px solid var(--peach);background:var(--cream-2);
  margin:1.5em 0;padding:1em 1.4em;border-radius:0 12px 12px 0;color:var(--ink-soft);
}
/* 記事下ナビ（前へ / トップに戻る / 次へ） */
.post-nav{
  display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center;
  margin:36px auto 0;max-width:840px;
}
.post-nav > div{min-width:0;}
.post-nav-prev{text-align:left;}
.post-nav-next{text-align:right;}
.post-nav-home{text-align:center;}
.post-nav a{
  color:var(--navy);transition:color .2s,transform .2s;
  display:inline-flex;flex-direction:column;gap:2px;max-width:100%;
}
.post-nav-prev a{align-items:flex-start;}
.post-nav-next a{align-items:flex-end;}
.post-nav a:hover{color:var(--peach);}
.post-nav-prev a:hover{transform:translateX(-3px);}
.post-nav-next a:hover{transform:translateX(3px);}
.post-nav .pn-label{font-weight:700;font-size:.86rem;color:var(--peach);}
.post-nav .pn-title{
  font-weight:700;font-size:.95rem;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
/* 中央ボタンは常にしっかり見せる */
.post-nav-home .btn{white-space:nowrap;}

@media (max-width:620px){
  .post-nav{grid-template-columns:1fr;text-align:center;gap:14px;}
  .post-nav-prev,.post-nav-next{text-align:center;}
  .post-nav-prev a,.post-nav-next a{align-items:center;}
  .post-nav-home{order:-1;}
}