.ecosave-hero-section {
    background:
        radial-gradient(
            circle at top right,
            rgba(45,99,135,.12),
            transparent 40%
        ),
        linear-gradient(
            135deg,
            #f8fbff,
            #eef7f1
        );
}
.ecosave-hero-section h1{
    font-size:clamp(27px,3.3vw,40px);
    font-weight:900;
    line-height:1.4;
    letter-spacing:.01em;
    margin-top: 2rem;
}
.ecosave-hero-section h1 .grad{
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
}

.ecosave-logo {
    display: block;

    width: 100%;
    max-width: 280px;
    height: auto;
}

.ecosave-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;

    text-align: center;
}

.ecosave-hero-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-left: 24px;
    padding-right: 24px;
}

.ecosave-hero-subtitle {
    display: inline-block;

    padding: 0.4rem 1rem;

    margin-bottom: 1.5rem;

    border-radius: 999px;

    background: rgba(45, 99, 135, 0.08);

    color: var(--color-primary);

    font-size: 0.9rem;
    font-weight: 700;

    letter-spacing: 0.05em;
}

.ecosave-hero-title {
    margin-bottom: 1.5rem;

    color: var(--color-text);

/*    font-size: clamp(2.5rem, 5vw, 4rem);*/
    font-size: clamp(2.4rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
}

.ecosave-hero-description {
    max-width: 800px;

    margin: 0 auto 2rem;

    color: var(--text-light);

    font-size: 1.1rem;
    line-height: 1.9;
}

.back-link {
/*    margin-bottom: 1rem;*/
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;

    padding: 0.75rem 1rem;

    border: 1px solid rgba(0, 84, 166, 0.15);
    border-radius: 999px;

    background: #fff;

    color: var(--color-primary);

    font-size: 0.9rem;
    font-weight: 600;

    text-decoration: none;

    transition: all 0.3s ease;
}

.back-link:hover {
    background: var(--color-primary);
    color: #fff;

    transform: translateY(-2px);
}


.back-to-top {
    position: fixed;

    right: 2rem;
    bottom: 2rem;

    width: 56px;
    height: 56px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 50%;

    background: #ffffff;

    color: var(--color-primary);

    border: 1px solid rgba(45,99,135,.15);

    opacity: 0;
    visibility: hidden;

    transition: all .3s ease;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary);

    color: #ffffff;

    transform: translateY(-3px);
}
.back-to-top::after {

    content: "";

    position: absolute;

    inset: -10px;

    border-radius: 50%;

    z-index: -2;
}

.back-to-top-icon {
    width: 22px;
    height: 22px;

    display: block;
}


*{margin:0;padding:0;box-sizing:border-box}
/*body{
  font-family:'Noto Sans JP',"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.8;
  font-size:15.5px
}*/

img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;gap:14px;height:66px}
.hd-logo img{height:34px;width:auto}
.hd-org{font-size:11px;color:var(--muted);line-height:1.45}
.hd-org b{display:block;font-size:12px;color:var(--ink)}
nav.hd-nav{margin-left:auto;display:flex;gap:22px;font-size:13.5px;font-weight:500;color:#334155}
nav.hd-nav a:hover{color:var(--green-deep)}
.hd-cta{margin-left:18px;background:linear-gradient(90deg,#4c8f22,#5aa42c);color:#fff;font-weight:700;font-size:13.5px;padding:10px 22px;border-radius:999px;box-shadow:0 4px 14px rgba(90,164,44,.35);transition:.2s}
.hd-cta:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(90,164,44,.45)}
@media(max-width:960px){nav.hd-nav{display:none}}

/* ecosave-hero */
.ecosave-hero{
  position:relative;
  overflow:hidden;
  background:
  linear-gradient(180deg,rgba(37,99,235,.045),rgba(90,164,44,.05) 70%,var(--bg)),
  repeating-linear-gradient(0deg,transparent,transparent 47px,rgba(35,42,124,.05) 48px),
  repeating-linear-gradient(90deg,transparent,transparent 47px,rgba(35,42,124,.05) 48px),
  #fdfdff;
/*  padding:72px 0 64px}*/
  padding:72px 0 64px
}
.ecosave-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.badge{display:inline-block;background:#e7f0ff;color:#1d4ed8;border:1px solid #c7dbff;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:999px;margin-bottom:20px}
.ecosave-hero h1{font-size:clamp(27px,3.3vw,40px);font-weight:900;line-height:1.4;letter-spacing:.01em}
.ecosave-hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.ecosave-hero-sub{margin-top:18px;color:#475569;font-size:15.5px;max-width:560px}
.ecosave-hero-num{margin-top:10px;font-weight:900;font-size:clamp(22px,3vw,30px);color:var(--navy)}
.ecosave-hero-num em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:1.5em;letter-spacing:.02em}
.ecosave-hero-btns{margin-top:28px;display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.btn-dark{background:#101736;color:#fff;font-weight:700;font-size:14.5px;padding:14px 32px;border-radius:12px;box-shadow:var(--shadow);transition:.2s}
.btn-dark:hover{background:#1c2755;transform:translateY(-1px)}
.btn-line{font-weight:700;font-size:14.5px;color:#334155}
.btn-line:hover{color:var(--green-deep)}
.ecosave-hero-photo{
    background:#fff;
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:0 20px 50px rgba(30,41,59,.12);
    padding:18px;
    max-width: 420px;
    margin-top: 20px;
  }
.ecosave-hero-photo img{border-radius:12px;margin:0 auto;max-height:420px;width:auto}
.ecosave-hero-photo figcaption{text-align:center;font-size:12px;color:var(--muted);margin-top:10px}
@media(max-width:860px){
    .ecosave-hero-grid{grid-template-columns:1fr}
    .ecosave-hero-photo{max-width:420px;margin:20px auto}
}

/* stats */
.stats{margin-top:-8px}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 22px;transform:translateY(38px)}
.stat{text-align:center;padding:0 8px}
.stat b{display:block;font-size:24px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--muted);font-weight:500}
.stat small{display:block;font-size:10.5px;color:#94a3b8;margin-top:2px}
@media(max-width:860px){.stats-in{grid-template-columns:repeat(2,1fr);row-gap:22px}}

/* sections */
section{padding:96px 0 8px}
.sec-badge{display:inline-block;background:#eaf5e2;color:var(--green-deep);border:1px solid #d4ebc2;font-size:12px;font-weight:700;letter-spacing:.08em;padding:4px 14px;border-radius:999px;margin-bottom:14px}
.sec-badge.blue{background:#e7f0ff;color:#1d4ed8;border-color:#c7dbff}
h2.sec-title{font-size:clamp(24px,3vw,32px);font-weight:900;line-height:1.4}
.sec-lead{margin-top:14px;color:#475569;max-width:760px}
.center{text-align:center}
.center .sec-lead{margin-left:auto;margin-right:auto}

/* problem list */
.prob{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:36px}
@media(max-width:720px){.prob{grid-template-columns:1fr}}
.prob-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-left:4px solid #e0685e;border-radius:12px;padding:16px 18px;box-shadow:var(--shadow)}
.prob-item .x{color:#e0685e;font-weight:900;font-size:17px;line-height:1.6}
.prob-item div b{font-size:14.5px}
.prob-item div p{font-size:13px;color:#64748b}
.prob-note{margin-top:22px;background:#fff7f6;border:1px solid #f5d9d5;border-radius:12px;padding:16px 20px;font-size:14px;color:#8a4a42}

/* solution keypoints bar */
.keybar{margin-top:34px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:860px){.keybar{grid-template-columns:1fr 1fr}}
.key{background:linear-gradient(135deg,#1c2a6e,#233a8f);color:#fff;border-radius:12px;padding:16px 14px;text-align:center;font-weight:700;font-size:13.5px;box-shadow:var(--shadow)}
.key span{display:block;font-size:11px;font-weight:400;color:#b9c6f2;margin-top:3px}

/* cards */
.cards{display:grid;gap:20px;margin-top:40px}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
@media(max-width:960px){.cards.c4{grid-template-columns:1fr 1fr}}
@media(max-width:960px){.cards.c3{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.cards.c3,.cards.c2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 24px}
.card .ic{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:14px;background:#eaf5e2}
.card h3{
    font-size:16.5px;
    font-weight:700;
    margin-bottom:8px;
    color: var(--color-primary);
  }
.card p{font-size:13.8px;color:#52607a}

/* how it works */
.how{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
@media(max-width:860px){.how{grid-template-columns:1fr}}
.how .card h3{display:flex;align-items:center;gap:10px}
.how .num{flex:none;width:28px;height:28px;border-radius:50%;background:var(--grad);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.chart-card{
  grid-column:1/-1;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:30px;
  color: var(--color-primary);
}
.chart-card h3{font-size:16px;font-weight:700;margin-bottom:6px;text-align:center}
.chart-card .cap{text-align:center;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.chart-card svg{width:100%;height:auto;display:block}

/* system section */
.sys{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;margin-top:40px}
@media(max-width:860px){.sys{grid-template-columns:1fr}}
.sys-img{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.sys-img figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:10px}
.spec{
  width:100%;
  border-collapse:collapse;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  font-size:14px;
  color: var(--color-text);
}
.spec th,.spec td{padding:13px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec th{width:36%;background:#f8fafc;color:#475569;font-weight:700;font-size:13px}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}

/* cases */
.case{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  color: var(--color-primary);
}
.case-hd{padding:18px 22px 14px;border-bottom:1px solid var(--line)}
.case-hd .tag{display:inline-block;font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px;background:#e7f0ff;color:#1d4ed8;margin-bottom:8px}
.case-hd h3{font-size:15.5px;font-weight:700}
.case-hd p{font-size:12px;color:var(--muted)}
.case-big{padding:18px 22px 6px;display:flex;align-items:baseline;gap:8px}
.case-big b{font-size:40px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.case-big span{font-size:12.5px;color:var(--muted);font-weight:500}
.case ul{list-style:none;padding:10px 22px 22px;font-size:13px;color:#52607a}
.case ul li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px dashed var(--line)}
.case ul li:last-child{border-bottom:none}
.case ul li b{color:var(--ink);font-weight:700;text-align:right}
.case-note{font-size:11.5px;color:#94a3b8;margin-top:14px}

/* flow */
.flow{margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:960px){.flow{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.flow{grid-template-columns:1fr}}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px 20px 18px;

  color: var(--color-primary);
}
.step .no{position:absolute;top:-14px;left:18px;width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;box-shadow:0 4px 10px rgba(37,99,235,.3)}
.step h3{font-size:14.5px;font-weight:700;margin:4px 0 6px}
.step p{font-size:12.5px;color:#64748b}
.flow-note{margin-top:26px;font-size:12.5px;color:#94a3b8}

/* faq */
.faq{
  margin-top:36px;
  display:grid;
  gap:14px;
  max-width:860px;
  margin-left:auto;
  margin-right:auto;

  color: var(--color-primary);
}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:0 22px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;display:flex;gap:14px;align-items:flex-start;padding:18px 0;font-weight:700;font-size:14.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{flex:none;color:#fff;background:var(--navy);width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12.5px}
.faq .a{display:flex;gap:14px;padding:0 0 20px;font-size:13.8px;color:#52607a}
.faq .a .m{flex:none;color:#fff;background:var(--green);width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700}

/* contact */
.contact{margin:96px 0 0;background:linear-gradient(135deg,#141c48 0%,#20307c 55%,#1f4d1f 130%);color:#fff;padding:80px 0 72px}
.contact h2{font-size:clamp(24px,3vw,32px);font-weight:900;text-align:center}
.contact .lead{text-align:center;color:#c3cdf0;font-size:14.5px;margin-top:12px}
.c-grid{margin-top:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.c-grid.c2{grid-template-columns:repeat(2,1fr);max-width:820px;margin-left:auto;margin-right:auto}
@media(max-width:860px){.c-grid,.c-grid.c2{grid-template-columns:1fr}}
.c-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:24px;text-align:center}
.c-item .t{font-size:12px;color:#aab6e6;font-weight:700;letter-spacing:.08em;margin-bottom:8px}
.c-item b{font-size:17px;font-weight:700;word-break:break-all}
.c-item p{font-size:12.5px;color:#c3cdf0;margin-top:6px}
.c-cta{margin-top:38px;text-align:center}
.c-cta a{display:inline-block;background:linear-gradient(90deg,#5aa42c,#78c24a);color:#fff;font-weight:900;font-size:16px;padding:16px 52px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.3);transition:.2s}
.c-cta a:hover{transform:translateY(-2px)}
.c-cta p{font-size:12px;color:#aab6e6;margin-top:14px}

/* footer */
/*
footer{background:#0d1330;color:#8e9bc7;padding:36px 0;font-size:12.5px}
.ft{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.ft a{color:#c3cdf0}
.ft a:hover{color:#fff}
.ft-l b{color:#fff;font-size:13.5px;display:block;margin-bottom:4px}
*/

.ecosave-mobile-contact-btn {
    margin-top: 1.5rem;

    /*padding-top: 1.5rem;*/

    /*border-top: 1px solid #e5e7eb;*/
    margin: 0.5rem;
}
.ecosave-mobile-contact-btn a {
    display: flex;
    justify-content: center;
    align-items: center;

    padding: 1rem;

    border-radius: 999px;

    background: var(--color-primary);

    color: #fff;

    text-decoration: none;

    font-weight: 700;
}