/* ===== HULINK — Site A: Trust Corporate (Blue × White) ===== */

:root {
  --blue-900: #0b2a4a;
  --blue-700: #14457a;
  --blue-600: #1c5fae;
  --blue-500: #2f7ad1;
  --blue-300: #8fbce8;
  --blue-100: #e7f1fb;
  --blue-50:  #f4f9fe;
  --ink:      #1d2b3a;
  --ink-soft: #4a5b6e;
  --line:     #dde7f1;
  --white:    #ffffff;
  --shadow:   0 18px 48px rgba(20, 69, 122, 0.10);
  --shadow-sm:0 6px 20px rgba(20, 69, 122, 0.08);
  --radius:   16px;
  --maxw:     1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: "Noto Sans JP", system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: "Montserrat", "Noto Sans JP", sans-serif;
  font-weight: 600; font-size: 0.98rem; letter-spacing: 0.02em;
  padding: 15px 32px; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn-primary { background: var(--blue-600); color: #fff; box-shadow: 0 10px 26px rgba(28,95,174,.30); }
.btn-primary:hover { background: var(--blue-700); transform: translateY(-2px); box-shadow: 0 14px 32px rgba(28,95,174,.38); }
.btn-ghost { background: rgba(255,255,255,.85); color: var(--blue-700); border-color: var(--blue-300); }
.btn-ghost:hover { background: #fff; transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255,255,255,.82); backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent; transition: box-shadow .25s ease, border-color .25s ease, background .25s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-color: var(--line); background: rgba(255,255,255,.95); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-logo { font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 1.5rem; letter-spacing: .08em; color: var(--blue-700); }
.brand-sub { font-size: .68rem; color: var(--ink-soft); letter-spacing: .12em; margin-top: 2px; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav-link { font-size: .95rem; font-weight: 500; color: var(--ink); position: relative; transition: color .2s; }
.nav-link:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px;
  background: var(--blue-600); transition: width .25s ease;
}
.nav-link:not(.nav-cta):hover { color: var(--blue-600); }
.nav-link:not(.nav-cta):hover::after { width: 100%; }
.nav-cta { background: var(--blue-600); color: #fff; padding: 10px 22px; border-radius: 999px; font-weight: 600; }
.nav-cta:hover { background: var(--blue-700); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.hamburger span { width: 26px; height: 2px; background: var(--blue-700); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(115deg, rgba(11,42,74,.78) 0%, rgba(20,69,122,.55) 42%, rgba(28,95,174,.20) 100%),
    url("images/hulink_案1_信頼.png") center/cover no-repeat;
}
.hero-inner { position: relative; z-index: 2; padding: 130px 24px 90px; }
.hero-text { max-width: 660px; color: #fff; }
.hero-eyebrow { font-family: "Montserrat", sans-serif; font-weight: 600; letter-spacing: .22em; font-size: .82rem; color: var(--blue-300); margin-bottom: 18px; }
.hero-title { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 700; line-height: 1.18; letter-spacing: .01em; margin-bottom: 24px; }
.hero-lead { font-size: 1.08rem; color: rgba(255,255,255,.92); margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 44px; }
.hero-badges { list-style: none; display: flex; flex-wrap: wrap; gap: 38px; border-top: 1px solid rgba(255,255,255,.25); padding-top: 26px; }
.hero-badges li { display: flex; flex-direction: column; }
.hero-badges strong { font-family: "Montserrat", sans-serif; font-size: 2rem; font-weight: 700; color: #fff; line-height: 1; }
.hero-badges strong small { font-size: 1rem; }
.hero-badges span { font-size: .8rem; color: var(--blue-300); margin-top: 6px; letter-spacing: .04em; }

/* ===== Section base ===== */
.section { padding: 100px 0; }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-eyebrow { font-family: "Montserrat", sans-serif; font-weight: 600; letter-spacing: .2em; font-size: .8rem; color: var(--blue-500); margin-bottom: 14px; }
.section-title { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 700; line-height: 1.35; color: var(--blue-900); }
.section-desc { margin-top: 18px; color: var(--ink-soft); font-size: 1.02rem; }

/* ===== Services ===== */
.services { background: var(--blue-50); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px 32px; box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: var(--blue-300); }
.service-num { font-family: "Montserrat", sans-serif; font-weight: 700; font-size: 2.4rem; color: var(--blue-100); line-height: 1; }
.service-name { font-size: 1.3rem; font-weight: 700; color: var(--blue-800, #103258); margin: 12px 0 14px; }
.service-text { color: var(--ink-soft); font-size: .98rem; margin-bottom: 22px; }
.service-points { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.service-points li { position: relative; padding-left: 26px; font-size: .94rem; color: var(--ink); }
.service-points li::before {
  content: ""; position: absolute; left: 0; top: .55em; width: 14px; height: 8px;
  border-left: 2px solid var(--blue-500); border-bottom: 2px solid var(--blue-500);
  transform: rotate(-45deg);
}

/* ===== Concept ===== */
.concept-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.concept-media img { border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 4/3; object-fit: cover; }
.concept-lead { color: var(--ink-soft); margin: 22px 0 32px; font-size: 1.02rem; }
.value-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.value-item { padding-left: 20px; border-left: 3px solid var(--blue-300); }
.value-item h4 { color: var(--blue-700); font-size: 1.08rem; margin-bottom: 4px; }
.value-item p { color: var(--ink-soft); font-size: .94rem; }

/* ===== Network band ===== */
.network { position: relative; padding: 120px 0; overflow: hidden; }
.network-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.network-overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient(100deg, rgba(11,42,74,.88), rgba(28,95,174,.55)); }
.network-text { position: relative; z-index: 2; color: #fff; max-width: 640px; }
.network-text h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; line-height: 1.3; margin-bottom: 18px; }
.network-text p { color: rgba(255,255,255,.92); font-size: 1.05rem; }

/* ===== Message ===== */
.message { background: var(--blue-50); }
.message-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 56px 56px 48px; max-width: 860px; margin: 0 auto; border-top: 5px solid var(--blue-600); }
.message-card .section-eyebrow, .message-card .section-title { text-align: left; }
.message-card .section-title { margin-bottom: 28px; }
.message-body { color: var(--ink-soft); font-size: 1.02rem; }
.message-sign { margin-top: 32px; text-align: right; }
.sign-role { display: block; font-size: .9rem; color: var(--ink-soft); }
.sign-name { display: block; font-size: 1.5rem; font-weight: 700; color: var(--blue-900); letter-spacing: .08em; margin-top: 4px; }

/* ===== Company ===== */
.company-wrap { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: start; }
.company-table { width: 100%; border-collapse: collapse; }
.company-table th, .company-table td { text-align: left; padding: 16px 4px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .96rem; }
.company-table th { width: 130px; color: var(--blue-700); font-weight: 700; white-space: nowrap; }
.company-table td { color: var(--ink); }
.history h3 { color: var(--blue-900); font-size: 1.2rem; margin-bottom: 18px; }
.history-list { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.history-list li { position: relative; padding-left: 76px; font-size: .95rem; color: var(--ink-soft); }
.history-list .hy { position: absolute; left: 0; top: 0; font-family: "Montserrat", sans-serif; font-weight: 700; color: var(--blue-600); }

/* ===== Contact ===== */
.contact-wrap { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.contact-form { background: var(--blue-50); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: block; font-size: .9rem; font-weight: 500; color: var(--ink); margin-bottom: 18px; }
.contact-form label.full { display: block; }
.req { display: inline-block; background: var(--blue-600); color: #fff; font-size: .68rem; padding: 1px 8px; border-radius: 4px; margin-left: 6px; vertical-align: middle; }
.contact-form input, .contact-form textarea {
  width: 100%; margin-top: 8px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: .95rem; background: #fff; color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(47,122,209,.15); }
.contact-form textarea { resize: vertical; }
.form-note { font-size: .82rem; color: var(--ink-soft); margin: 4px 0 18px; }

.contact-info { display: flex; flex-direction: column; gap: 18px; }
.info-block { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--blue-600); border-radius: 12px; padding: 20px 22px; box-shadow: var(--shadow-sm); }
.info-label { display: block; font-size: .78rem; letter-spacing: .1em; color: var(--blue-500); font-weight: 700; margin-bottom: 6px; }
.info-main { display: block; font-size: 1.2rem; font-weight: 700; color: var(--blue-900); }
.info-sub { display: block; font-size: .85rem; color: var(--ink-soft); margin-top: 2px; }

/* ===== Footer ===== */
.site-footer { background: var(--blue-900); color: #fff; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; padding: 56px 24px; flex-wrap: wrap; }
.footer-brand .brand-logo { color: #fff; }
.footer-brand p { color: rgba(255,255,255,.7); font-size: .9rem; margin-top: 10px; max-width: 320px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-nav a { font-size: .92rem; color: rgba(255,255,255,.85); transition: color .2s; }
.footer-nav a:hover { color: var(--blue-300); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0; }
.footer-bottom small { color: rgba(255,255,255,.6); font-size: .82rem; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 920px) {
  .service-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .concept-inner, .company-wrap, .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .message-card { padding: 40px 28px; }
}

@media (max-width: 720px) {
  .nav {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    padding: 10px 0; transform: translateY(-130%); transition: transform .35s ease; align-items: stretch;
  }
  .nav.open { transform: translateY(0); }
  .nav-link { padding: 15px 24px; border-bottom: 1px solid var(--blue-50); }
  .nav-link:not(.nav-cta)::after { display: none; }
  .nav-cta { margin: 12px 24px; text-align: center; }
  .hamburger { display: flex; }
  .section { padding: 70px 0; }
  .hero-inner { padding: 120px 24px 70px; }
  .hero-badges { gap: 26px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}