/* =========================================================
トークン定義（配色・タイポグラフィ）
明るい空と海のブルーに、元気なコーラルを差し色にした
躍動感のある配色。写真の緑（山肌・木々）が引き立つよう
地色は寒色系だが、彩度と明度を上げてポップに。
書体はユニバーサルデザインのゴシック体で統一。
========================================================= */
:root {
--forest-900: #0b5f8a; / 明るく元気なオーシャンブルー（メイン） /
--forest-700: #1479ad; / ブルー（やや明） /
--sea-700: #0e86b4; / 澄んだ空のブルー（アクセント／文字色） /
--sea-500: #29c2e0; / 弾けるようなライトブルー /
--spring-400: #7ef0d0; / 湧水を思わせるミント（アクセント） /
--gold-500: #ff6f5e; / 元気なコーラル（CTA差し色） /
--paper-100: #f4fbfe; / 明るく澄んだ白（背景） /
--paper-50: #ffffff;
--ink-900: #163247; / ブルー寄りの濃紺（本文色） */
--ink-600: #4d6774;

--font-display: "BIZ UDPGothic", "Noto Sans JP", sans-serif;
--font-body: "BIZ UDPGothic", "Noto Sans JP", sans-serif;

--radius-s: 6px;
--radius-m: 14px;
--shadow-card: 0 10px 30px rgba(11, 95, 138, 0.14);
}

{
box-sizing: border-box;
}
html {
scroll-behavior: smooth;
}
body {
margin: 0;
font-family: var(--font-body);
color: var(--ink-900);
background: var(--paper-100);
line-height: 1.8;
-webkit-font-smoothing: antialiased;
}
img {
max-width: 100%;
display: block;
}
a {
color: inherit;
text-decoration: none;
}
h1,
h2,
h3 {
font-family: var(--font-display);
margin: 0;
letter-spacing: 0;
font-weight: 700;
}
.container {
width: min(1120px, 92%);
margin-inline: auto;
}
section {
padding: 5.5rem 0;
}
@media (max-width: 640px) {
section {
padding: 3.4rem 0;
}
}

/* 等高線モチーフ（区切り線として全セクションの上部に反復使用） */
.contour-divider {
width: 100%;
height: 28px;
display: block;
color: var(--sea-500);
opacity: 0.55;
}

/* =========================
ヘッダー / ナビゲーション
========================= */
header.site-header {
position: sticky;
top: 0;
z-index: 50;
background: rgba(246, 243, 234, 0.92);
backdrop-filter: blur(6px);
border-bottom: 1px solid rgba(11, 95, 138, 0.08);
}
.header-inner {
display: flex;
align-items: center;
justify-content: space-between;
padding: 1rem 0;
}
.logo {
display: flex;
align-items: center;
gap: 0.6rem;
font-family: var(--font-display);
font-weight: 700;
font-size: 1.25rem;
color: var(--forest-900);
}
.logo .logo-mark {
width: 34px;
height: 34px;
flex: none;
color: var(--sea-700);
}
nav.main-nav ul {
list-style: none;
margin: 0;
padding: 0;
display: flex;
gap: 2rem;
}
nav.main-nav a {
font-size: 0.92rem;
font-weight: 500;
color: var(--forest-900);
position: relative;
padding-bottom: 4px;
}
nav.main-nav a::after {
content: "";
position: absolute;
left: 0;
bottom: 0;
width: 0;
height: 2px;
background: var(--gold-500);
transition: width 0.25s ease;
}
nav.main-nav a:hover::after {
width: 100%;
}

.nav-toggle {
display: none;
background: none;
border: none;
cursor: pointer;
color: var(--forest-900);
}

@media (max-width: 780px) {
nav.main-nav {
position: absolute;
top: 100%;
left: 0;
right: 0;
background: var(--paper-50);
border-bottom: 1px solid rgba(11, 95, 138, 0.1);
transform-origin: top;
transform: scaleY(0);
opacity: 0;
pointer-events: none;
transition:
transform 0.22s ease,
opacity 0.22s ease;
}
nav.main-nav.open {
transform: scaleY(1);
opacity: 1;
pointer-events: auto;
}
nav.main-nav ul {
flex-direction: column;
gap: 0;
padding: 0.5rem 6%;
}
nav.main-nav li {
border-bottom: 1px solid rgba(11, 95, 138, 0.06);
}
nav.main-nav a {
display: block;
padding: 0.9rem 0;
}
.nav-toggle {
display: block;
}
}

/* =========================
ヒーローセクション
========================= */
.hero {
position: relative;
min-height: 88vh;
display: flex;
align-items: flex-end;
color: #fff;
overflow: hidden;
}
.hero-media {
position: absolute;
inset: 0;
background: linear-gradient(180deg, rgba(11, 95, 138, 0.15) 0%, rgba(11, 95, 138, 0.35) 55%, rgba(7, 43, 63, 0.88) 100%);
z-index: 1;
}
.hero-media img {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
object-fit: cover;
z-index: -1;
}

.hero-contour {
position: absolute;
right: -5%;
top: 8%;
width: 60%;
max-width: 640px;
opacity: 0.35;
color: var(--spring-400);
z-index: 2;
pointer-events: none;
}

.hero-content {
position: relative;
z-index: 3;
padding-bottom: 5.5rem;
width: 100%;
}
.hero-eyebrow {
display: inline-flex;
align-items: center;
gap: 0.6rem;
font-size: 0.85rem;
letter-spacing: 0.18em;
color: var(--spring-400);
margin-bottom: 1.1rem;
font-weight: 500;
}
.hero-eyebrow::before {
content: "";
width: 34px;
height: 1px;
background: var(--spring-400);
}
.hero h1 {
font-size: clamp(2rem, 5vw, 3.6rem);
font-weight: 700;
line-height: 1.4;
max-width: 820px;
text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}
.hero p.hero-sub {
margin-top: 1rem;
max-width: 560px;
font-size: 1.02rem;
color: rgba(255, 255, 255, 0.88);
}
.btn {
display: inline-flex;
align-items: center;
gap: 0.5rem;
padding: 0.95rem 2.1rem;
border-radius: 999px;
font-weight: 700;
font-size: 0.98rem;
border: 1px solid transparent;
cursor: pointer;
transition:
transform 0.18s ease,
box-shadow 0.18s ease,
background 0.18s ease;
}
.btn-primary {
background: var(--gold-500);
color: var(--ink-900);
box-shadow: 0 10px 24px rgba(255, 111, 94, 0.35);
}
.btn-primary:hover {
transform: translateY(-2px);
box-shadow: 0 14px 30px rgba(255, 111, 94, 0.45);
}
.btn-outline {
border-color: rgba(255, 255, 255, 0.6);
color: #fff;
background: transparent;
}
.btn-outline:hover {
background: rgba(255, 255, 255, 0.12);
}

.hero-cta {
margin-top: 2.2rem;
}

/* =========================
リードセクション
========================= */
.lead {
background: var(--paper-100);
}
.lead-grid {
display: grid;
grid-template-columns: 1.1fr 0.9fr;
gap: 3.5rem;
align-items: center;
}
@media (max-width: 860px) {
.lead-grid {
grid-template-columns: 1fr;
gap: 2rem;
}
}
.section-eyebrow {
font-size: 0.82rem;
letter-spacing: 0.16em;
color: var(--sea-700);
font-weight: 700;
margin-bottom: 0.8rem;
display: block;
}
.lead h2 {
font-size: clamp(1.5rem, 3vw, 2.1rem);
color: var(--forest-900);
line-height: 1.6;
margin-bottom: 1.4rem;
}
.lead p {
color: var(--ink-600);
font-size: 1rem;
max-width: 52ch;
}

.lead-visual {
position: relative;
border-radius: var(--radius-m);
overflow: hidden;
aspect-ratio: 4/3;
box-shadow: var(--shadow-card);
}
.lead-visual img {
width: 100%;
height: 100%;
object-fit: cover;
}

.region-tags {
display: flex;
flex-wrap: wrap;
gap: 0.6rem;
margin-top: 1.8rem;
}
.region-tags span {
font-size: 0.82rem;
padding: 0.45rem 1rem;
border-radius: 999px;
background: var(--forest-900);
/*color: var(--paper-50);*/
color: #ffffff;
font-weight: 500;
}

/* =========================
エリア全体マップセクション
========================= */
.map-section {
background: var(--forest-900);
color: var(--paper-50);
}
.map-section .section-eyebrow {
color: var(--spring-400);
}
.map-section h2 {
color: #fff;
margin-bottom: 0.6rem;
font-size: clamp(1.5rem, 3vw, 2.1rem);
}
.map-section .map-desc {
color: rgba(255, 255, 255, 0.75);
max-width: 60ch;
margin-bottom: 2.2rem;
}

.map-embed {
position: relative;
width: 100%;
aspect-ratio: 16/9;
border-radius: var(--radius-m);
overflow: hidden;
background: var(--forest-700);
border: 1px dashed rgba(255, 255, 255, 0.35);
display: flex;
align-items: center;
justify-content: center;
text-align: center;
color: rgba(255, 255, 255, 0.55);
font-size: 0.9rem;
padding: 2rem;
}
.map-embed iframe {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
border: 0;
}

/* =========================
ルート紹介セクション
========================= */
.routes {
background: var(--paper-100);
}
.routes-head {
text-align: center;
max-width: 640px;
margin: 0 auto 3.2rem;
}
.routes-head h2 {
font-size: clamp(1.6rem, 3vw, 2.2rem);
color: var(--forest-900);
}
.routes-head p {
color: var(--ink-600);
margin-top: 0.8rem;
}

.route-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1.8rem;
}
@media (max-width: 1020px) {
.route-grid {
grid-template-columns: repeat(2, 1fr);
}
}
@media (max-width: 560px) {
.route-grid {
grid-template-columns: 1fr;
}
}

.route-card {
background: var(--paper-50);
border-radius: var(--radius-m);
overflow: hidden;
box-shadow: var(--shadow-card);
display: flex;
flex-direction: column;
transition:
transform 0.22s ease,
box-shadow 0.22s ease;
}
.route-card:hover {
transform: translateY(-6px);
box-shadow: 0 16px 40px rgba(11, 95, 138, 0.18);
}
.route-thumb {
aspect-ratio: 16/9;
overflow: hidden;
position: relative;
}
.route-thumb img {
width: 100%;
height: 100%;
object-fit: cover;
transition: transform 0.4s ease;
}
.route-card:hover .route-thumb img {
transform: scale(1.06);
}

.route-body {
padding: 1.3rem 1.4rem 1.5rem;
display: flex;
flex-direction: column;
gap: 0.7rem;
flex: 1;
}
.route-body h3 {
font-size: 1.08rem;
color: var(--forest-900);
line-height: 1.5;
}
.route-meta {
display: flex;
gap: 0.6rem;
flex-wrap: wrap;
font-size: 0.78rem;
}
.route-meta span {
background: rgba(31, 79, 99, 0.09);
color: var(--sea-700);
padding: 0.3rem 0.7rem;
border-radius: 999px;
font-weight: 700;
}
.route-meta span.level-hard {
background: rgba(255, 111, 94, 0.15);
color: #b23a2c;
}
.route-body p {
color: var(--ink-600);
font-size: 0.9rem;
flex: 1;
margin: 0;
}
.route-link {
margin-top: 0.4rem;
display: inline-flex;
align-items: center;
gap: 0.4rem;
font-weight: 700;
font-size: 0.88rem;
color: var(--sea-700);
}
.route-link svg {
width: 16px;
height: 16px;
transition: transform 0.2s ease;
}
.route-card:hover .route-link svg {
transform: translateX(4px);
}

/* =========================
フッター
========================= */
footer.site-footer {
background: var(--forest-900);
color: rgba(255, 255, 255, 0.82);
padding: 3.6rem 0 2rem;
}
.footer-notice {
display: flex;
gap: 1rem;
align-items: flex-start;
background: rgba(255, 255, 255, 0.06);
border: 1px solid rgba(255, 255, 255, 0.12);
border-radius: var(--radius-m);
padding: 1.3rem 1.5rem;
margin-bottom: 2.4rem;
}
.footer-notice svg {
flex: none;
width: 26px;
height: 26px;
color: var(--gold-500);
margin-top: 2px;
}
.footer-notice p {
margin: 0;
font-size: 0.9rem;
line-height: 1.9;
color: rgba(255, 255, 255, 0.78);
}
.footer-bottom {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 0.8rem;
padding-top: 1.6rem;
border-top: 1px solid rgba(255, 255, 255, 0.12);
font-size: 0.82rem;
color: rgba(255, 255, 255, 0.55);
}
.footer-logo {
font-family: var(--font-display);
font-weight: 700;
color: rgba(255, 255, 255, 0.85);
font-size: 1.02rem;
}

/* フォーカス可視化（アクセシビリティ） */
a:focus-visible,
button:focus-visible {
outline: 2px solid var(--gold-500);
outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {

{
transition: none !important;
scroll-behavior: auto !important;
}
}