@charset "utf-8";
/* =========================================================
一宮にじいろ歯科 インプラント特設サイト（構成デモ）
- デザインは別途デザイナー様が制作する前提の「たたき台」
- 配色・余白・階層のトーンを共有する目的のスタイル
========================================================= */
:root{
--teal:#137a82;
--teal-d:#0d5a61;
--teal-l:#e7f2f2;
--ink:#1d2b31;
--ink-2:#4a5b61;
--amber:#e79a3c;
--amber-d:#c97f26;
--coral:#e0776b;
--line:#dfe8e8;
--bg:#ffffff;
--bg-soft:#f4f8f8;
--bg-soft-2:#eef5f5;
--rainbow:linear-gradient(90deg,#e0776b 0%,#e79a3c 25%,#6fbf9a 50%,#4c9fce 75%,#8a7fc4 100%);
--shadow:0 6px 24px rgba(19,60,64,.08);
--shadow-l:0 14px 40px rgba(19,60,64,.14);
--radius:14px;
--maxw:1120px;
--serif:"Shippori Mincho","Hiragino Mincho ProN",serif;
--sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);
line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased;
text-align:justify;word-break:break-word;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-d);text-underline-offset:3px}
h1,h2,h3,h4{line-height:1.4;font-weight:700;margin:0}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
/* ---------- layout helpers ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:78px 0}
.section--soft{background:var(--bg-soft)}
.section--teal{background:var(--teal);color:#fff}
.section--teal a{color:#fff}
.narrow{max-width:820px;margin:0 auto}
.center{text-align:center}
.rainbow-rule{height:5px;border:0;background:var(--rainbow);border-radius:99px;margin:0}
/* ---------- section heading ---------- */
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .en{
display:block;font-family:var(--serif);letter-spacing:.14em;text-transform:uppercase;
color:var(--teal);font-size:.82rem;font-weight:600;margin-bottom:8px
}
.sec-head h2{font-size:clamp(1.5rem,3.6vw,2.15rem);letter-spacing:.02em}
.sec-head h2 b{color:var(--teal-d)}
.sec-head .lead{margin-top:14px;color:var(--ink-2);font-size:1rem}
.section--teal .sec-head .en{color:#bfe6e4}
/* ---------- buttons ---------- */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:.5em;
padding:15px 30px;border-radius:99px;font-weight:700;text-decoration:none;
font-size:1.02rem;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
border:2px solid transparent;cursor:pointer
}
.btn:hover{transform:translateY(-2px)}
.btn--amber{background:var(--amber);color:#fff;box-shadow:0 8px 20px rgba(201,127,38,.32)}
.btn--amber:hover{background:var(--amber-d)}
.btn--teal{background:#fff;color:var(--teal-d);border-color:#fff}
.btn--ghost{background:transparent;color:var(--teal-d);border-color:var(--teal)}
.btn--ghost:hover{background:var(--teal-l)}
.btn--lg{padding:18px 40px;font-size:1.1rem}
.btn--block{display:flex;width:100%}
/* ---------- header ---------- */
.site-header{
position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
backdrop-filter:blur(6px);border-bottom:1px solid var(--line);transition:box-shadow .2s
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(19,60,64,.1)}
.site-header .bar{display:flex;align-items:center;gap:14px;height:76px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand .mark{width:36px;height:36px;flex:none}
.brand .txt strong{display:block;font-size:.98rem;letter-spacing:.01em;line-height:1.25;white-space:nowrap}
.brand .txt span{display:block;font-size:.68rem;color:var(--teal);letter-spacing:.14em}
.nav{margin-left:auto;display:flex;align-items:center;gap:15px}
.nav a{text-decoration:none;color:var(--ink);font-size:.85rem;font-weight:500;position:relative;padding:6px 0;white-space:nowrap}
.nav a:hover{color:var(--teal-d)}
.nav a.is-current{color:var(--teal-d)}
.nav a.is-current::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--teal)}
.header-cta{display:flex;align-items:center;gap:10px;flex:none}
.header-tel{text-align:right;line-height:1.2}
.header-tel b{font-family:var(--serif);font-size:1rem;color:var(--teal-d);letter-spacing:.01em;white-space:nowrap}
.header-tel small{display:block;font-size:.64rem;color:var(--ink-2);white-space:nowrap}
.header-cta .btn{padding:11px 18px;font-size:.9rem;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
content:"";position:absolute;left:11px;width:22px;height:2px;background:var(--ink);transition:.2s
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:rotate(45deg);top:0}
.nav-toggle.is-open span::after{transform:rotate(-45deg);top:0}
/* ---------- hero ---------- */
.hero{position:relative;background:var(--teal-d);color:#fff;overflow:hidden}
.hero__media{position:absolute;inset:0}
.hero__media img{width:100%;height:100%;object-fit:cover;opacity:.28}
.hero__inner{position:relative;padding:88px 0 108px;max-width:720px}
.hero .kicker{
display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
padding:7px 16px;border-radius:99px;font-size:.83rem;letter-spacing:.08em;margin-bottom:22px
}
.hero h1{font-size:clamp(1.9rem,5vw,3rem);letter-spacing:.02em;margin-bottom:20px}
.hero h1 .mini{display:block;font-size:.5em;font-weight:500;letter-spacing:.1em;color:#bfe6e4;margin-bottom:12px}
.hero__lead{font-size:1.05rem;color:#e7f2f2;margin-bottom:30px}
.hero__points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.hero__points li{
background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
padding:8px 15px;border-radius:10px;font-size:.9rem;font-weight:500
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px}
.hero__note{margin-top:18px;font-size:.8rem;color:#a9d3d1}
/* ---------- worry / CV band ---------- */
.worrylist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:0 auto 40px;max-width:760px}
.worrylist li{
background:#fff;border:1px solid var(--line);border-left:4px solid var(--amber);
border-radius:10px;padding:16px 18px;font-weight:500;font-size:.97rem;box-shadow:var(--shadow)
}
.worrylist li::before{content:"“";color:var(--amber);font-family:var(--serif);font-size:1.3em;margin-right:.2em;vertical-align:-.2em}
.cvbox{
background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-l);
padding:38px 34px;text-align:center;max-width:860px;margin:0 auto;border-top:6px solid var(--teal)
}
.cvbox h3{font-size:1.35rem;margin-bottom:10px}
.cvbox p{color:var(--ink-2)}
.cvbox .row{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:22px}
.cvbox .tel{font-family:var(--serif);font-size:1.9rem;color:var(--teal-d);letter-spacing:.02em;text-decoration:none;font-weight:700}
.cvbox .tel small{display:block;font-family:var(--sans);font-size:.72rem;color:var(--ink-2);letter-spacing:.06em}
/* ---------- reasons ---------- */
.reason{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
.reason:last-child{margin-bottom:0}
.reason:nth-child(even) .reason__media{order:2}
.reason__media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-l);aspect-ratio:4/3}
.reason__media img{width:100%;height:100%;object-fit:cover}
.reason__no{
position:absolute;left:16px;top:14px;background:var(--teal);color:#fff;font-family:var(--serif);
font-size:.9rem;padding:4px 13px;border-radius:99px;letter-spacing:.1em
}
.reason__body h3{font-size:1.3rem;color:var(--teal-d);margin-bottom:8px}
.reason__body h3 .lbl{display:block;font-size:.76rem;letter-spacing:.16em;color:var(--amber-d);font-family:var(--serif);margin-bottom:4px}
.reason__body .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.reason__body .tags span{background:var(--teal-l);color:var(--teal-d);font-size:.8rem;padding:5px 12px;border-radius:99px;font-weight:600}
/* ---------- cards ---------- */
.cards{display:grid;gap:22px}
.cards--3{grid-template-columns:repeat(3,1fr)}
.cards--2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow)}
.card h3{font-size:1.1rem;color:var(--teal-d);margin-bottom:8px;display:flex;gap:.5em;align-items:baseline}
.card h3 .n{font-family:var(--serif);color:var(--amber-d);font-size:.95em}
.card p{font-size:.92rem;color:var(--ink-2);margin:0}
.card--icon{text-align:center}
.card--icon .ic{width:56px;height:56px;margin:0 auto 12px;color:var(--teal)}
/* ---------- merits / list check ---------- */
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:14px 26px}
.checklist li{padding-left:34px;position:relative;font-weight:500}
.checklist li::before{
content:"";position:absolute;left:0;top:.25em;width:22px;height:22px;border-radius:50%;
background:var(--teal);
-webkit-mask:url("data:image/svg+xml;utf8,") center/16px no-repeat;
mask:url("data:image/svg+xml;utf8,") center/16px no-repeat
}
/* ---------- comparison table ---------- */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.cmp{border-collapse:collapse;width:100%;min-width:640px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:14px 16px;text-align:center;font-size:.92rem}
table.cmp thead th{background:var(--teal);color:#fff;font-size:.95rem}
table.cmp tbody th{background:var(--bg-soft-2);text-align:left;white-space:nowrap;font-weight:600}
table.cmp .best{background:#fbf4e7}
table.cmp .mk{font-size:1.15rem;font-weight:700}
table.cmp .mk.o{color:var(--teal)}
table.cmp .mk.t{color:var(--amber-d)}
table.cmp .mk.x{color:#c2554a}
/* ---------- fee table ---------- */
table.fee{border-collapse:collapse;width:100%;background:#fff;box-shadow:var(--shadow);border-radius:var(--radius);overflow:hidden}
table.fee th,table.fee td{border-bottom:1px solid var(--line);padding:15px 18px;text-align:left;font-size:.95rem}
table.fee thead th{background:var(--teal);color:#fff}
table.fee td.price{text-align:right;font-family:var(--serif);font-weight:700;color:var(--teal-d);white-space:nowrap}
table.fee tr:last-child td{border-bottom:0}
table.fee .grp td{background:var(--bg-soft-2);font-weight:700;color:var(--ink)}
.notebox{
background:var(--teal-l);border-radius:12px;padding:18px 22px;font-size:.86rem;color:var(--teal-d);
border-left:4px solid var(--teal)
}
.notebox.warn{background:#fff5ec;color:var(--amber-d);border-color:var(--amber)}
.notebox b{color:inherit}
/* ---------- flow timeline ---------- */
.flow{counter-reset:step;position:relative;max-width:820px;margin:0 auto}
.flow::before{content:"";position:absolute;left:23px;top:10px;bottom:10px;width:2px;background:var(--line)}
.flow li{position:relative;padding:0 0 30px 66px}
.flow li:last-child{padding-bottom:0}
.flow li::before{
counter-increment:step;content:"0" counter(step);
position:absolute;left:0;top:-2px;width:48px;height:48px;border-radius:50%;
background:var(--teal);color:#fff;font-family:var(--serif);font-weight:700;
display:flex;align-items:center;justify-content:center;font-size:.95rem
}
.flow h3{font-size:1.08rem;color:var(--teal-d);margin-bottom:4px}
.flow p{font-size:.92rem;color:var(--ink-2);margin:0}
.flow .meta{display:inline-block;margin-top:6px;font-size:.78rem;background:var(--bg-soft-2);padding:3px 10px;border-radius:99px;color:var(--ink-2)}
/* ---------- case ---------- */
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.case__ba{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line);position:relative}
.case__ba figure{margin:0;background:#fff}
.case__ba figcaption{
position:absolute;top:10px;padding:3px 12px;border-radius:99px;font-size:.76rem;font-weight:700;color:#fff
}
.case__ba .b-cap{left:10px;background:var(--ink-2)}
.case__ba .a-cap{right:10px;background:var(--teal)}
.case__ba img{aspect-ratio:4/3;object-fit:cover;width:100%}
.case__body{padding:22px 24px}
.case__body h3{font-size:1.08rem;color:var(--teal-d);margin-bottom:10px}
.case__spec{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:.86rem;margin-bottom:12px}
.case__spec dt{color:var(--ink-2);white-space:nowrap}
.case__spec dd{margin:0;font-weight:500}
.case__risk{font-size:.8rem;color:var(--ink-2);background:var(--bg-soft);border-radius:10px;padding:12px 14px;margin:0}
/* toggle before/after (JS) */
.ba-toggle{display:inline-flex;border:1px solid var(--line);border-radius:99px;overflow:hidden;margin-bottom:12px}
.ba-toggle button{border:0;background:#fff;padding:6px 18px;font-size:.85rem;font-weight:700;color:var(--ink-2);cursor:pointer}
.ba-toggle button.is-active{background:var(--teal);color:#fff}
/* ---------- doctor ---------- */
.doctor{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start}
.doctor__photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-l)}
.doctor__photo img{width:100%;aspect-ratio:3/3.5;object-fit:cover;object-position:center 20%}
.doctor__photo .cap{font-size:.74rem;color:var(--ink-2);padding:8px 10px;background:var(--bg-soft);text-align:center}
.doctor__body h3{font-size:1.3rem;margin-bottom:4px}
.doctor__body .role{color:var(--teal-d);font-weight:600;font-size:.9rem;margin-bottom:16px;display:block}
.doctor__body h3 .kana{font-size:.6em;color:var(--ink-2);margin-left:.6em;font-weight:500}
.creds{margin-top:16px;display:grid;gap:6px}
.creds li{padding-left:20px;position:relative;font-size:.9rem}
.creds li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:50%;background:var(--amber)}
/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}
.faq summary{
list-style:none;cursor:pointer;padding:18px 52px 18px 52px;position:relative;font-weight:700;font-size:.98rem
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";position:absolute;left:18px;top:16px;width:24px;height:24px;background:var(--teal);color:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:.9rem}
.faq summary::after{content:"";position:absolute;right:20px;top:22px;width:11px;height:11px;border-right:2px solid var(--ink-2);border-bottom:2px solid var(--ink-2);transform:rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq .a{padding:0 22px 20px 52px;color:var(--ink-2);font-size:.92rem;position:relative}
.faq .a::before{content:"A";position:absolute;left:18px;top:0;width:24px;height:24px;background:var(--amber);color:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:.9rem}
/* ---------- forms ---------- */
.form{max-width:720px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-l);padding:34px}
.field{margin-bottom:20px}
.field label{display:block;font-weight:700;font-size:.9rem;margin-bottom:7px}
.field .req{color:#c2554a;font-size:.78rem;margin-left:.4em}
.field .opt{color:var(--ink-2);font-size:.78rem;margin-left:.4em}
.field input,.field textarea,.field select{
width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font:inherit;font-size:.95rem;background:var(--bg-soft)
}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--teal);background:#fff}
.field.err input,.field.err textarea{border-color:#c2554a;background:#fdf3f2}
.field .msg{color:#c2554a;font-size:.8rem;margin-top:5px;display:none}
.field.err .msg{display:block}
.radios{display:flex;flex-wrap:wrap;gap:10px}
.radios label{display:flex;align-items:center;gap:6px;font-weight:500;background:var(--bg-soft);border:1px solid var(--line);padding:9px 15px;border-radius:99px;cursor:pointer}
.radios input{width:auto}
.form-ok{display:none;text-align:center;padding:30px}
.form-ok.show{display:block}
.form-ok .ic{width:64px;height:64px;margin:0 auto 14px;color:var(--teal)}
/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#cdd8d8;font-size:.9rem}
.site-footer a{color:#cdd8d8}
.site-footer .top{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:36px;padding:56px 0}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:14px;letter-spacing:.06em}
.site-footer .brand .txt strong{color:#fff}
.site-footer .hours{border-collapse:collapse;width:100%}
.site-footer .hours th,.site-footer .hours td{border:1px solid #3a4a4a;padding:6px 8px;font-size:.8rem;text-align:center}
.site-footer .hours th{background:#2a3838;color:#fff;font-weight:500}
.site-footer .bottom{border-top:1px solid #33403f;padding:18px 0;font-size:.78rem;color:#93a3a3;text-align:center}
.footer-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
/* ---------- floating SP CTA ---------- */
.spbar{
position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
box-shadow:0 -6px 20px rgba(0,0,0,.14);transform:translateY(110%);transition:transform .25s
}
.spbar.show{transform:translateY(0)}
.spbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px;text-decoration:none;font-weight:700;font-size:.9rem;background:#fff;color:var(--teal-d)}
.spbar a.web{background:var(--amber);color:#fff}
.spbar a small{font-size:.68rem;font-weight:500;opacity:.8}
/* ---------- misc ---------- */
.breadcrumb{font-size:.8rem;color:var(--ink-2);padding:14px 0}
.breadcrumb a{text-decoration:none}
.page-hero{background:var(--teal-d);color:#fff;padding:52px 0;text-align:center}
.page-hero .en{font-family:var(--serif);letter-spacing:.16em;color:#bfe6e4;font-size:.8rem;display:block;margin-bottom:6px}
.page-hero h1{font-size:clamp(1.6rem,4vw,2.2rem)}
.demo-flag{
background:repeating-linear-gradient(45deg,#fff6e6,#fff6e6 12px,#fdeecf 12px,#fdeecf 24px);
border-bottom:1px solid var(--amber);color:var(--amber-d);font-size:.8rem;text-align:center;padding:7px 14px
}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
.reveal{opacity:1;transform:none;transition:none}
html{scroll-behavior:auto}
}
/* anchor offset for sticky header */
[id]{scroll-margin-top:92px}
/* ---------- responsive ---------- */
@media(max-width:1180px){
.header-tel{display:none}
}
@media(max-width:1040px){
.site-header .bar{height:66px}
.nav{
position:fixed;inset:66px 0 auto 0;background:#fff;flex-direction:column;gap:0;
border-bottom:1px solid var(--line);padding:8px 0;transform:translateY(-140%);transition:transform .25s;box-shadow:var(--shadow-l);z-index:65
}
.nav.is-open{transform:none}
.nav a{width:100%;padding:14px 22px;border-bottom:1px solid var(--bg-soft-2)}
.nav a.is-current::after{display:none}
.nav-toggle{display:block;margin-left:auto}
.header-cta .header-tel{display:none}
.doctor{grid-template-columns:1fr}
.doctor__photo{max-width:280px}
.site-footer .top{grid-template-columns:1fr;gap:26px}
}
@media(max-width:560px){
.header-cta .btn{display:none}
.brand .txt strong{font-size:.92rem}
.brand .mark{width:32px;height:32px}
.demo-flag{font-size:.72rem;text-align:left}
}
@media(max-width:720px){
body{font-size:15px}
.section{padding:52px 0}
.reason{grid-template-columns:1fr;gap:20px}
.reason:nth-child(even) .reason__media{order:0}
.cards--3,.cards--2{grid-template-columns:1fr}
.checklist{grid-template-columns:1fr}
.worrylist{grid-template-columns:1fr}
.case__ba{grid-template-columns:1fr}
.hero__inner{padding:64px 0 84px}
.cvbox{padding:28px 20px}
.cvbox .tel{font-size:1.5rem}
.spbar{display:grid}
.form{padding:22px}
.page-hero{padding:38px 0}
}