/* ===== K&K works portfolio site ===== */
:root{
  --navy:#1f3a52;
  --navy-dark:#162b3d;
  --navy-soft:#2c4f6e;
  --accent:#c47b4e;       /* 温かみのあるテラコッタ */
  --accent-dark:#a9633a;
  --ink:#26303a;
  --ink-light:#5d6b78;
  --cream:#f7f3ec;        /* 生成りの背景 */
  --cream-deep:#efe8dc;
  --card:#ffffff;
  --line:#e2dccf;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Yu Gothic","YuGothic","Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",sans-serif;
  color:var(--ink);
  background:var(--card);
  line-height:1.9;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--accent-dark);}
h1,h2,h3,h4{
  font-family:"Hiragino Mincho ProN","Yu Mincho","YuMincho","Noto Serif JP",serif;
  font-weight:600;
  line-height:1.55;
  letter-spacing:.03em;
}
.container{max-width:1120px;margin:0 auto;padding:0 28px;}
.container-narrow{max-width:820px;margin:0 auto;padding:0 28px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:76px;}
.logo{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-weight:600;font-size:21px;letter-spacing:.05em;color:var(--navy);line-height:1.2;}
.logo small{display:block;font-family:"Yu Gothic",sans-serif;font-size:10px;letter-spacing:.22em;color:var(--ink-light);font-weight:400;margin-top:3px;}
.nav-toggle{display:none;}
.nav-label{display:none;cursor:pointer;font-size:24px;user-select:none;color:var(--navy);}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:22px;align-items:center;}
.site-nav a{font-size:13.5px;letter-spacing:.04em;font-weight:500;white-space:nowrap;}
.site-nav a.nav-cta{
  background:var(--accent);color:#fff;padding:9px 22px;border-radius:40px;font-size:13px;letter-spacing:.1em;
}
.site-nav a.nav-cta:hover{background:var(--accent-dark);color:#fff;}

/* ===== Buttons ===== */
.btn{
  display:inline-block;padding:15px 40px;font-size:14px;letter-spacing:.12em;font-weight:500;
  border-radius:44px;cursor:pointer;transition:background .25s ease,color .25s ease,border-color .25s ease;
  font-family:inherit;border:1px solid var(--accent);background:var(--accent);color:#fff;
}
.btn:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.btn-outline:hover{background:#fff;color:var(--navy);border-color:#fff;}
.btn-navy{background:var(--navy);border-color:var(--navy);}
.btn-navy:hover{background:var(--navy-dark);border-color:var(--navy-dark);color:#fff;}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:560px;
  display:flex;align-items:center;
  background:var(--navy) center/cover no-repeat;
  color:#fff;
  padding:120px 0;
}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(22,43,61,.82) 0%,rgba(31,58,82,.62) 60%,rgba(31,58,82,.42) 100%);}
.hero .container{position:relative;width:100%;}
.hero .eyebrow{display:block;font-size:12px;letter-spacing:.32em;margin:0 0 22px;color:#e8d8c6;}
.hero h1{font-size:clamp(28px,4.6vw,50px);margin:0 0 26px;line-height:1.5;text-shadow:0 2px 18px rgba(0,0,0,.2);}
.hero .hero-sub{font-size:16px;letter-spacing:.05em;max-width:560px;margin:0 0 38px;opacity:.94;}

/* ===== Section base ===== */
section{padding:96px 0;}
.section-head{text-align:center;margin-bottom:60px;}
.section-head .eyebrow{display:block;font-size:12px;letter-spacing:.3em;color:var(--accent-dark);margin-bottom:14px;}
.section-head h2{font-size:clamp(25px,3.3vw,36px);margin:0;}
.section-head p{color:var(--ink-light);margin-top:18px;}

/* ===== Pain points ===== */
.pain{background:var(--cream);}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-bottom:48px;}
.pain-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:36px 30px;text-align:center;}
.pain-card .mark{font-family:"Hiragino Mincho ProN",serif;color:var(--accent);font-size:30px;line-height:1;margin-bottom:14px;}
.pain-card p{margin:0;font-size:15px;color:var(--ink);}
.pain-lead{text-align:center;color:var(--ink-light);max-width:680px;margin:0 auto;font-size:15px;}
.pain-lead strong{color:var(--navy);font-weight:600;}

/* ===== Services ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.service-card{border:1px solid var(--line);border-radius:14px;padding:42px 32px;background:var(--card);transition:box-shadow .3s ease,transform .3s ease;}
.service-card:hover{box-shadow:0 14px 34px rgba(31,58,82,.08);transform:translateY(-3px);}
.service-card .tag{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--accent-dark);background:var(--cream-deep);padding:5px 14px;border-radius:30px;margin-bottom:18px;}
.service-card h3{font-size:20px;margin:0 0 14px;}
.service-card p{color:var(--ink-light);font-size:15px;margin:0;}

/* ===== Reasons ===== */
.reasons{background:var(--navy);color:#eaf0f5;}
.reasons .section-head h2{color:#fff;}
.reasons .section-head .eyebrow{color:#e8c9b0;}
.reasons .section-head p{color:#b7c6d3;}
.reasons-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.reason{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:36px 34px;display:flex;gap:22px;align-items:flex-start;}
.reason .num{flex:0 0 auto;font-family:"Hiragino Mincho ProN",serif;font-size:15px;letter-spacing:.1em;color:var(--navy);background:#e8c9b0;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;}
.reason h3{font-size:19px;margin:0 0 10px;color:#fff;}
.reason p{margin:0;font-size:14.5px;color:#c6d3df;}

/* ===== Works ===== */
.works{background:var(--cream);}
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;}
.work-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .3s ease,transform .3s ease;}
.work-card:hover{box-shadow:0 16px 36px rgba(31,58,82,.10);transform:translateY(-3px);}
.work-card .thumb{aspect-ratio:16/10;background:var(--cream-deep) center/cover no-repeat;overflow:hidden;}
.work-card .thumb img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .6s ease;}
.work-card:hover .thumb img{transform:scale(1.05);}
.work-card .work-body{padding:26px 26px 30px;display:flex;flex-direction:column;flex:1;}
.work-card .meta{font-size:12px;letter-spacing:.12em;color:var(--accent-dark);margin-bottom:8px;}
.work-card h3{font-size:18px;margin:0 0 12px;}
.work-card p{color:var(--ink-light);font-size:14px;margin:0 0 18px;flex:1;}
.work-card .view{font-size:13px;letter-spacing:.1em;color:var(--navy);font-weight:600;}
.work-card .view::after{content:" →";}
.works-note{text-align:center;margin-top:40px;color:var(--ink-light);font-size:14px;}

/* ===== Pricing ===== */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:960px;margin:0 auto;}
.plan{border:1px solid var(--line);border-radius:16px;padding:42px 30px;text-align:center;background:var(--card);position:relative;}
.plan.featured{border-color:var(--accent);box-shadow:0 14px 34px rgba(196,123,78,.14);}
.plan .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;font-size:11px;letter-spacing:.1em;padding:5px 18px;border-radius:30px;}
.plan h3{font-size:18px;margin:0 0 6px;}
.plan .freq{font-size:13px;color:var(--ink-light);margin-bottom:20px;}
.plan .price{font-family:"Hiragino Mincho ProN",serif;font-size:34px;color:var(--navy);line-height:1.1;}
.plan .price .tax{font-size:14px;color:var(--ink-light);font-family:"Yu Gothic",sans-serif;margin-left:2px;}
.plan .per{font-size:13px;color:var(--ink-light);margin-top:6px;}
.plan ul{list-style:none;padding:0;margin:24px 0 0;text-align:left;}
.plan ul li{font-size:14px;color:var(--ink);padding:8px 0 8px 24px;position:relative;border-top:1px solid var(--line);}
.plan ul li::before{content:"・";position:absolute;left:6px;color:var(--accent);}
.pricing-trial{text-align:center;margin-top:42px;background:var(--cream-deep);border-radius:14px;padding:28px 24px;max-width:760px;margin-left:auto;margin-right:auto;}
.pricing-trial p{margin:0;font-size:15px;color:var(--navy);}
.pricing-fine{text-align:center;margin-top:20px;font-size:13px;color:var(--ink-light);}

/* ===== Profile ===== */
.profile{background:var(--cream);}
.profile-inner{display:grid;grid-template-columns:260px 1fr;gap:54px;align-items:start;max-width:920px;margin:0 auto;}
.profile-photo{border-radius:14px;overflow:hidden;background:var(--cream-deep);aspect-ratio:4/5;}
.profile-photo img{width:100%;height:100%;object-fit:cover;}
.profile-text .role{font-size:13px;letter-spacing:.16em;color:var(--accent-dark);margin-bottom:8px;}
.profile-text h3{font-size:26px;margin:0 0 6px;}
.profile-text .ruby{font-size:13px;color:var(--ink-light);letter-spacing:.1em;margin-bottom:22px;}
.profile-text p{font-size:15px;color:var(--ink);margin:0 0 16px;}
.profile-text .sign{display:block;text-align:right;margin-top:18px;font-family:"Hiragino Mincho ProN",serif;color:var(--navy);}

/* ===== FAQ ===== */
.faq-list{max-width:780px;margin:0 auto;}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:16px;overflow:hidden;background:var(--card);}
.faq-q{display:flex;align-items:flex-start;gap:14px;padding:22px 26px;cursor:pointer;font-weight:600;font-size:16px;color:var(--navy);}
.faq-q .qmark{font-family:"Hiragino Mincho ProN",serif;color:var(--accent);flex:0 0 auto;}
.faq-q .arrow{margin-left:auto;flex:0 0 auto;color:var(--ink-light);transition:transform .3s ease;}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a-inner{padding:0 26px 24px 54px;color:var(--ink-light);font-size:15px;}
.faq-item.open .faq-a{max-height:360px;}

/* ===== Contact ===== */
.contact{background:var(--navy);color:#eaf0f5;}
.contact .section-head h2{color:#fff;}
.contact .section-head .eyebrow{color:#e8c9b0;}
.contact .section-head p{color:#b7c6d3;}
.contact-form{max-width:680px;margin:0 auto;background:#fff;border-radius:16px;padding:48px 44px;color:var(--ink);}
.contact-form .field{margin-bottom:24px;}
.contact-form label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--navy);}
.contact-form label .opt{font-weight:400;color:var(--ink-light);font-size:12px;margin-left:6px;}
.contact-form input,.contact-form textarea{
  width:100%;padding:14px 16px;border:1px solid var(--line);background:#fafafa;
  font-family:inherit;font-size:15px;color:var(--ink);border-radius:8px;
}
.contact-form textarea{min-height:150px;resize:vertical;}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent);background:#fff;}
.contact-form .submit-row{text-align:center;margin-top:8px;}
.contact-form button{width:100%;}
.form-note{font-size:13px;color:var(--ink-light);margin:0 0 26px;background:var(--cream);border-radius:8px;padding:14px 18px;border-left:3px solid var(--accent);}
.form-fallback{text-align:center;margin-top:24px;font-size:14px;color:#c6d3df;}
.form-fallback a{color:#fff;border-bottom:1px solid rgba(255,255,255,.5);}
.form-result{display:none;text-align:center;padding:30px 20px;}
.form-result.show{display:block;}
.form-result h3{font-size:22px;color:var(--navy);margin:0 0 12px;}
.form-result p{color:var(--ink-light);font-size:15px;margin:0;}

/* ===== Footer ===== */
.site-footer{background:var(--navy-dark);color:#b9c6d2;padding:64px 0 28px;}
.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:30px;margin-bottom:44px;}
.site-footer .logo{color:#fff;}
.site-footer .logo small{color:#8197a9;}
.footer-contact{font-size:13.5px;line-height:1.9;color:#9fb0c0;}
.footer-contact a{color:#dfe7ee;}
.footer-nav ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 22px;}
.footer-nav a{font-size:13px;color:#9fb0c0;}
.footer-nav a:hover{color:#fff;}
.copyright{border-top:1px solid #29445e;padding-top:22px;font-size:12px;letter-spacing:.08em;color:#7f93a6;text-align:center;}

/* ===== Responsive ===== */
@media (max-width:920px){
  .pain-grid,.services-grid,.works-grid,.pricing-grid{grid-template-columns:1fr 1fr;}
  .reasons-grid{grid-template-columns:1fr;}
  .profile-inner{grid-template-columns:200px 1fr;gap:36px;}
}
@media (max-width:720px){
  .container,.container-narrow{padding:0 22px;}
  section{padding:68px 0;}
  .section-head{margin-bottom:42px;}
  .site-header .container{height:66px;}
  .nav-label{display:block;}
  .site-nav{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:max-height .35s ease;}
  .nav-toggle:checked ~ .site-nav{max-height:460px;}
  .site-nav ul{flex-direction:column;gap:0;padding:10px 0;align-items:stretch;}
  .site-nav li{border-bottom:1px solid #f0ece3;}
  .site-nav li:last-child{border-bottom:none;}
  .site-nav a{display:block;padding:16px 26px;}
  .site-nav a.nav-cta{margin:12px 26px;text-align:center;}
  .pain-grid,.services-grid,.works-grid,.pricing-grid{grid-template-columns:1fr;}
  .profile-inner{grid-template-columns:1fr;gap:26px;}
  .profile-photo{max-width:220px;margin:0 auto;}
  .hero{padding:88px 0;min-height:480px;}
  .contact-form{padding:34px 24px;}
  .footer-top{flex-direction:column;gap:24px;}
}