:root {
  --ink: #1b1b1b;
  --ink-soft: #4a4a4a;
  --muted: #8a867e;
  --paper: #ffffff;
  --washi: #f5f2ec;
  --line: #e2ddd3;
  --shu: #b8432f;          /* 朱色（春日大社の朱） */
  --shu-dark: #963523;
  --moss: #4f5b3a;
  --serif: "Shippori Mincho", "Yu Mincho", serif;
  --en: "Cormorant Garamond", serif;
  --sans: "Noto Sans JP", sans-serif;
  --gutter: clamp(16px, 5vw, 80px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 2;
  font-size: 15px;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 600; }
figure { margin: 0; }

.section { padding: clamp(80px, 12vw, 160px) var(--gutter); max-width: 1320px; margin-inline: auto; }

/* ふわっと表示 */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity 1.2s ease, transform 1.2s cubic-bezier(.2,.7,.2,1); }
.reveal.is-shown { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ボタン */
.btn {
  display: inline-block; text-decoration: none; text-align: center; cursor: pointer;
  font: 500 .95rem var(--sans); letter-spacing: .12em;
  color: var(--paper); background: var(--ink); border: 1px solid var(--ink);
  padding: 16px 40px; transition: background .3s, color .3s;
}
.btn:hover { background: var(--shu); border-color: var(--shu); }
.btn--light { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--light:hover { background: var(--shu); color: var(--paper); border-color: var(--shu); }
.btn--wide { width: 100%; }

/* オープニング */
.opening {
  position: fixed; inset: 0; z-index: 200; background: var(--paper);
  display: grid; place-items: center;
  animation: opening-out .9s ease 2.1s forwards;
}
.opening__inner { display: grid; justify-items: center; gap: 14px; }
.opening__year { font: 500 clamp(3rem, 9vw, 5rem) / 1 var(--en); letter-spacing: .12em; opacity: 0; animation: fade-up 1s ease .2s forwards; }
.opening__line { width: 0; height: 1px; background: var(--shu); animation: line 1s ease .8s forwards; }
.opening__name { font: 500 .75rem var(--en); letter-spacing: .4em; color: var(--muted); opacity: 0; animation: fade-up 1s ease 1.1s forwards; }
@keyframes fade-up { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes line { to { width: 120px; } }
@keyframes opening-out { to { opacity: 0; visibility: hidden; } }

/* ヘッダー */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--gutter); color: var(--paper);
  transition: background .4s, color .4s, padding .4s;
}
.header.is-scrolled { background: rgba(255,255,255,.94); color: var(--ink); padding-block: 12px; backdrop-filter: blur(8px); }
.nav-open .header { color: var(--paper); background: transparent; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
/* シカのロゴ（名刺と同じ形）。暗い背景では白、明るい背景では紺 */
.logo__mark { width: 40px; height: 44px; flex: none; color: inherit; --logo-eye: #03192d; --logo-gold: #c9a25f; }
.header.is-scrolled .logo__mark, .header--solid .logo__mark { color: #13294a; --logo-eye: #fff; --logo-gold: #b8955a; }
.nav-open .header .logo__mark { color: var(--paper); --logo-eye: #03192d; --logo-gold: #c9a25f; }
.logo__text { font: 600 1rem/1.35 var(--serif); letter-spacing: .08em; white-space: nowrap; }
@media (max-width: 600px) { .logo__text { font-size: .88rem; letter-spacing: .04em; } .logo__mark { width: 34px; height: 37px; } }
.logo__text small { display: block; font: 500 .6rem var(--en); letter-spacing: .25em; opacity: .8; }

.nav-toggle { background: none; border: 0; color: inherit; cursor: pointer; display: grid; justify-items: center; gap: 4px; padding: 6px; }
.nav-toggle__lines { display: grid; gap: 7px; width: 34px; }
.nav-toggle__lines i { display: block; height: 1px; background: currentColor; transition: transform .4s, opacity .3s; }
.nav-toggle__label { font: 500 .6rem var(--en); letter-spacing: .3em; }
.nav-open .nav-toggle__lines i:nth-child(1) { transform: translateY(8px) rotate(30deg); }
.nav-open .nav-toggle__lines i:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle__lines i:nth-child(3) { transform: translateY(-8px) rotate(-30deg); }

/* 全画面メニュー */
.nav {
  position: fixed; inset: 0; z-index: 90; color: var(--paper);
  display: grid; align-content: center; justify-items: center; gap: 40px;
  padding: 100px var(--gutter) 40px;
  opacity: 0; visibility: hidden; transition: opacity .6s, visibility .6s;
}
.nav__bg { position: absolute; inset: 0; background: center / cover; z-index: -1; }
.nav__bg::after { content: ""; position: absolute; inset: 0; background: rgba(15,15,12,.78); }
.nav-open .nav { opacity: 1; visibility: visible; }
.nav__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px 64px; }
@media (min-width: 768px) { .nav__list { grid-template-columns: 1fr 1fr; } }
.nav__list a { display: flex; align-items: baseline; gap: 20px; text-decoration: none; font: 500 .9rem var(--serif); padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.18); min-width: 260px; transition: color .3s; }
.nav__list a span { font: 500 1.6rem var(--en); letter-spacing: .12em; min-width: 140px; }
.nav__list a:hover { color: #f0a493; }
.nav__tel { font: 500 1.4rem var(--en); letter-spacing: .1em; margin: 0; text-align: center; }
.nav__tel a { text-decoration: none; }
.nav__tel small { display: block; font: .75rem var(--sans); opacity: .7; }

/* ヒーロー */
.hero { position: relative; height: 100svh; min-height: 560px; overflow: hidden; color: var(--paper); }
.hero__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); animation: hero-zoom 14s ease-out forwards; }
@keyframes hero-zoom { to { transform: scale(1); } }
.hero__shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.15) 40%, rgba(0,0,0,.55) 100%); }
.hero__copy {
  position: absolute; top: 50%; right: calc(var(--gutter) + 4vw); transform: translateY(-50%);
  writing-mode: vertical-rl; font: 600 clamp(1.6rem, 3.6vw, 2.8rem)/1.9 var(--serif); letter-spacing: .28em;
  display: flex; flex-direction: column; gap: .2em; white-space: nowrap;
}
.hero__copy span { opacity: 0; animation: fade-down 1.4s ease forwards; }
.hero__copy span:nth-child(1) { animation-delay: 2.6s; }
.hero__copy span:nth-child(2) { animation-delay: 3.0s; padding-top: 1.2em; }
.hero__copy span:nth-child(3) { animation-delay: 3.4s; padding-top: 2.4em; }
@keyframes fade-down { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: none; } }
.hero__en { position: absolute; left: var(--gutter); bottom: clamp(48px, 9vh, 96px); opacity: 0; animation: fade-up 1.4s ease 3.8s forwards; }
.hero__en p { margin: 0; font: 500 .85rem var(--en); letter-spacing: .3em; }
.hero__en-big { font: 500 clamp(2rem, 5.5vw, 4.4rem)/1.1 var(--en) !important; letter-spacing: .04em !important; margin-top: 10px !important; }
.hero__scroll { position: absolute; right: var(--gutter); bottom: 0; text-decoration: none; font: 500 .65rem var(--en); letter-spacing: .3em; writing-mode: vertical-rl; padding-bottom: 90px; }
.hero__scroll::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 1px; height: 80px; background: rgba(255,255,255,.4); }
.hero__scroll::before { content: ""; position: absolute; left: 50%; bottom: 0; width: 1px; height: 80px; background: var(--paper); transform-origin: top; animation: scroll-line 2.2s ease-in-out infinite; z-index: 1; }
@keyframes scroll-line { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
@media (max-width: 640px) {
  .hero__copy { right: 50%; transform: translate(50%, -60%); font-size: 1.7rem; }
  .hero__en-big { font-size: 1.9rem !important; }
}

/* 見出し */
.heading { margin-bottom: clamp(48px, 7vw, 88px); }
.heading__en { font: 500 clamp(2.8rem, 7vw, 5.6rem)/1 var(--en); letter-spacing: .04em; margin: 0; }
.heading__ja { font: 600 .9rem var(--serif); letter-spacing: .2em; margin-top: 16px; display: flex; align-items: center; gap: 14px; }
.heading__ja::before { content: ""; width: 28px; height: 1px; background: var(--shu); }
.heading--center { text-align: center; }
.heading--center .heading__ja { justify-content: center; }
.heading--light { color: var(--paper); }

/* コンセプト */
.concept { position: relative; }
.concept__inner { display: grid; gap: 0 6vw; }
@media (min-width: 1000px) { .concept__inner { grid-template-columns: 1fr 1.6fr; } }
.concept__body { display: grid; gap: 40px; }
@media (min-width: 768px) { .concept__body { grid-template-columns: auto 1fr; gap: 64px; align-items: start; } }
.concept__lead { writing-mode: vertical-rl; font: 600 clamp(1.4rem, 2.6vw, 2rem)/2 var(--serif); letter-spacing: .2em; height: 15em; }
@media (max-width: 767px) { .concept__lead { writing-mode: horizontal-tb; height: auto; line-height: 1.8; } }
.concept__text p { margin: 0 0 1.6em; color: var(--ink-soft); line-height: 2.3; }
.concept__photos { display: grid; grid-template-columns: 1fr 1fr; gap: 4vw; margin-top: clamp(48px, 8vw, 120px); align-items: start; }
.concept__photo { overflow: hidden; }
.concept__photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; transition: transform 1.6s ease; }
.concept__photo:hover img { transform: scale(1.04); }
.concept__photo--2 { margin-top: 18vw; }
@media (min-width: 1000px) { .concept__photos { grid-template-columns: 1.2fr 1fr; padding-left: 10vw; } .concept__photo--2 { margin-top: 160px; } }
.numbers { list-style: none; padding: 0; margin: clamp(56px, 8vw, 100px) 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.numbers li { padding: 28px 8px 0; display: grid; gap: 4px; text-align: center; }
.numbers li + li { border-left: 1px solid var(--line); }
.numbers strong { font: 500 clamp(2rem, 5vw, 3.6rem)/1 var(--en); }
.numbers li:nth-child(3) strong { font-family: var(--serif); font-weight: 600; font-size: clamp(1.6rem, 4vw, 2.8rem); }
.numbers span { font-size: .75rem; color: var(--muted); }

/* 動画の帯 */
.interlude { position: relative; height: clamp(420px, 80vh, 760px); overflow: hidden; color: var(--paper); display: grid; place-items: center; text-align: center; }
.interlude__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.interlude__shade { position: absolute; inset: 0; background: rgba(10,10,8,.42); }
.interlude__text { position: relative; font: 600 clamp(1rem, 2vw, 1.3rem)/2.2 var(--serif); letter-spacing: .14em; padding: 0 var(--gutter); margin: 0; }
.interlude__en { display: block; font: italic 500 clamp(2.4rem, 6vw, 4.8rem)/1.2 var(--en); letter-spacing: .02em; margin-bottom: 20px; }

/* お悩み */
.worries { list-style: none; padding: 0; margin: 0; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 640px) { .worries { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .worries { grid-template-columns: repeat(3, 1fr); } }
.worries li { background: var(--paper); padding: 40px 32px; font: 600 1rem/1.9 var(--serif); position: relative; }
.worries li::before { content: "—"; color: var(--shu); display: block; margin-bottom: 8px; }
.worries__answer { text-align: center; font: 600 clamp(1.2rem, 2.6vw, 1.7rem) var(--serif); letter-spacing: .14em; margin: 64px 0 0; }

/* サービス */
.service { padding-top: 0; }
.service__list { display: grid; gap: clamp(64px, 9vw, 120px); }
.service__item { display: grid; gap: 28px; align-items: center; }
@media (min-width: 900px) {
  .service__item { grid-template-columns: 1.15fr 1fr; gap: 6vw; }
  .service__item:nth-child(even) figure { order: 2; }
}
.service__item figure { overflow: hidden; }
.service__item img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; transition: transform 1.6s ease; }
.service__item:hover img { transform: scale(1.04); }
.service__num { font: 500 4rem/1 var(--en); color: var(--shu); margin: 0 0 12px; }
.service__body h3 { font: 600 clamp(1.3rem, 2.4vw, 1.7rem) var(--serif); letter-spacing: .12em; margin-bottom: 20px; }
.service__body p:last-child { color: var(--ink-soft); margin: 0; line-height: 2.2; }

/* 強み */
.strength { position: relative; color: var(--paper); background: var(--bg) center / cover fixed; }
.strength::before { content: ""; position: absolute; inset: 0; background: rgba(18,20,14,.8); }
.strength__inner { position: relative; }
.strength__list { display: grid; gap: 48px; }
@media (min-width: 900px) { .strength__list { grid-template-columns: repeat(3, 1fr); gap: 0; } .strength__item + .strength__item { border-left: 1px solid rgba(255,255,255,.2); } }
.strength__item { padding: 0 clamp(8px, 3vw, 48px); text-align: center; }
.strength__num { font: 600 2.4rem/1 var(--serif); color: #f0a493; margin: 0 0 24px; }
.strength__item h3 { font: 600 1.25rem/1.8 var(--serif); letter-spacing: .12em; margin-bottom: 20px; }
.strength__item p { margin: 0; opacity: .82; font-size: .92rem; text-align: left; }
@media (hover: none) { .strength { background-attachment: scroll; } }

/* 制作の流れ */
.flow { list-style: none; padding: 0; margin: 0; display: grid; border-top: 1px solid var(--ink); }
@media (min-width: 1200px) { .flow { grid-template-columns: repeat(5, 1fr); } }
.flow li { padding: 32px 24px 32px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 1200px) { .flow li { border-bottom: 0; padding: 32px 24px; } .flow li + li { border-left: 1px solid var(--line); } }
.flow span { font: 500 2.6rem/1 var(--en); color: var(--shu); }
.flow h3 { font: 600 1.1rem var(--serif); letter-spacing: .1em; margin: 16px 0 10px; }
.flow p { margin: 0; font-size: .88rem; color: var(--ink-soft); }

/* 料金 */
.price-wrap { background: var(--washi); }
.price__lead { text-align: center; margin: -32px 0 56px; color: var(--ink-soft); }
.note { font-size: .82rem; color: var(--muted); text-align: center; margin-top: 32px; line-height: 1.9; }

.base { background: var(--paper); border-top: 3px solid var(--ink); display: grid; gap: 20px 56px; padding: 40px clamp(24px, 4vw, 56px); align-items: center; }
@media (min-width: 768px) { .base { grid-template-columns: auto 1fr; } }
.base__label { font: 600 .85rem var(--serif); letter-spacing: .2em; }
.base__price { font: 500 clamp(3rem, 6vw, 4rem)/1.1 var(--en); margin: 4px 0 0; }
.base__price small { font: .85rem var(--sans); color: var(--muted); margin-left: 6px; }
.base__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px 32px; }
@media (min-width: 640px) { .base__list { grid-template-columns: 1fr 1fr; } }
.base__list li { padding-left: 22px; position: relative; }
.base__list li::before { content: ""; position: absolute; left: 0; top: .95em; width: 10px; height: 1px; background: var(--shu); }

.options__title { font: 600 1.3rem var(--serif); letter-spacing: .14em; margin: 72px 0 20px; }
.options__title small { display: block; font: .82rem var(--sans); color: var(--muted); letter-spacing: .04em; margin-top: 4px; }
.options { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 900px) { .options { grid-template-columns: 1fr 1fr; } }
.option {
  display: grid; grid-template-columns: auto 1fr auto; gap: 4px 16px; align-items: center;
  background: var(--paper); padding: 22px 24px; cursor: pointer; transition: background .3s;
}
.option:hover { background: #fcfbf8; }
.option:has(input:checked) { background: #fbf1ee; }
.option input { width: 20px; height: 20px; accent-color: var(--shu); margin: 0; }
.option__body strong { display: block; font: 600 1rem var(--serif); letter-spacing: .06em; }
.option__body em { display: block; font-style: normal; font-size: .8rem; color: var(--muted); line-height: 1.7; }
.option__price { font: 500 1.3rem var(--en); white-space: nowrap; text-align: right; }
.option__price small { font: .72rem var(--sans); color: var(--muted); }
.option__count { grid-column: 2 / -1; display: none; align-items: center; gap: 10px; justify-self: end; }
.option:has(input:checked) .option__count { display: flex; }
.option__count button { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line); background: var(--paper); font-size: 1.1rem; cursor: pointer; line-height: 1; }
.option__count button:hover { border-color: var(--shu); color: var(--shu); }
.option__count output { min-width: 3.5em; text-align: center; font-weight: 700; }
.option__count output::after { content: "ページ"; font-weight: 400; font-size: .82rem; }
@media (max-width: 480px) { .option { grid-template-columns: auto 1fr; } .option__price { grid-column: 2; text-align: left; } }

.estimate {
  margin-top: 24px; background: var(--ink); color: var(--paper);
  padding: 22px clamp(20px, 3vw, 40px); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 32px;
  position: sticky; bottom: 12px; z-index: 5; box-shadow: 0 10px 30px rgba(0,0,0,.18);
}
.estimate p { margin: 0; font-size: .85rem; }
.estimate__total { font: 500 2.4rem/1.2 var(--en) !important; }
.estimate__total small { font: .8rem var(--sans); margin-left: 6px; opacity: .75; }
@media (max-width: 640px) { .estimate .btn { width: 100%; } .estimate__total { font-size: 2rem !important; } }

.monthly { margin-top: 56px; background: var(--paper); padding: 32px clamp(24px, 4vw, 56px); display: grid; gap: 8px 40px; align-items: center; }
@media (min-width: 768px) { .monthly { grid-template-columns: 1fr auto; } }
.monthly h3 { font: 600 1.15rem var(--serif); letter-spacing: .1em; margin-bottom: 6px; }
.monthly h3 small { font: .8rem var(--sans); color: var(--muted); }
.monthly p { margin: 0; color: var(--ink-soft); font-size: .9rem; }
.monthly__price { font: 500 2.2rem var(--en) !important; color: var(--ink) !important; white-space: nowrap; }
.monthly__price small { font: .8rem var(--sans); color: var(--muted); margin-left: 6px; }

/* 会社概要 */
.company-grid { display: grid; gap: 0 6vw; }
@media (min-width: 1000px) { .company-grid { grid-template-columns: 1fr 2fr; } }
.company { display: grid; grid-template-columns: 1fr; margin: 0; border-top: 1px solid var(--ink); }
@media (min-width: 640px) { .company { grid-template-columns: 160px 1fr; } }
.company dt, .company dd { padding: 22px 8px; margin: 0; border-bottom: 1px solid var(--line); }
.company dt { font: 600 .9rem var(--serif); letter-spacing: .14em; }
.company dd a { text-decoration: none; }
@media (max-width: 639px) { .company dt { border-bottom: 0; padding-bottom: 0; } .company dd { padding-top: 4px; } }

/* お問い合わせ */
.contact { position: relative; color: var(--paper); background: var(--bg) center / cover; }
.contact::before { content: ""; position: absolute; inset: 0; background: rgba(14,14,12,.78); }
.contact__inner { position: relative; max-width: 860px; }
.contact__lead { text-align: center; font-family: var(--serif); margin: -24px 0 0; }
.contact__tel { text-align: center; margin: 40px 0 56px; }
.tel { display: block; font: 500 clamp(2.4rem, 7vw, 3.6rem)/1.2 var(--en); letter-spacing: .06em; text-decoration: none; }
.contact__tel span { font-size: .82rem; opacity: .75; }
.form { background: var(--paper); color: var(--ink); padding: clamp(28px, 5vw, 56px); display: grid; gap: 22px; }
.form label { display: grid; gap: 8px; font: 600 .92rem var(--serif); letter-spacing: .08em; }
.form input:not([type="checkbox"]), .form select, .form textarea {
  font: 400 1rem var(--sans); padding: 14px 16px; border: 1px solid var(--line); border-radius: 0; background: var(--paper); width: 100%;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 1px solid var(--ink); border-color: var(--ink); }
.req { display: inline-block; margin-left: 10px; color: var(--shu); font: 500 .72rem var(--sans); width: fit-content; }
.form__agree { display: flex !important; align-items: center; gap: 8px; justify-content: center; font-family: var(--sans) !important; font-weight: 400 !important; }
.form .note { margin: 0; }
.form__trap { position: absolute !important; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form__status { margin: 0; padding: 16px 18px; font-size: .92rem; line-height: 1.8; border-left: 3px solid var(--ink); background: var(--washi); }
.form__status.is-error { border-left-color: var(--shu); color: var(--shu-dark); }
.form button[disabled] { opacity: .6; cursor: wait; }

/* フッター */
.footer { background: #111; color: rgba(255,255,255,.7); font-size: .82rem; }
.footer__inner { max-width: 1320px; margin: 0 auto; padding: 72px var(--gutter) 48px; display: grid; gap: 28px; }
@media (min-width: 900px) { .footer__inner { grid-template-columns: auto 1fr; align-items: center; gap: 32px 64px; } .footer__nav { grid-column: 1 / -1; } }
.logo--light { color: var(--paper); }
.footer__inner p { margin: 0; line-height: 1.9; }
.footer__inner a { text-decoration: none; }
.footer__nav { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 24px; font: 500 .8rem var(--en); letter-spacing: .2em; }
.footer__nav a:hover { color: var(--paper); }
.footer__copy { text-align: center; margin: 0; padding: 20px; border-top: 1px solid rgba(255,255,255,.1); font: .72rem var(--en); letter-spacing: .2em; }

/* 下層ページ */
.page { padding: 160px var(--gutter) 120px; max-width: 860px; margin: 0 auto; }
.page h1 { font: 600 1.8rem var(--serif); letter-spacing: .14em; margin-bottom: 40px; }
.page h2 { font: 600 1.1rem var(--serif); margin-top: 40px; }
.page p { color: var(--ink-soft); }
.header--solid { background: rgba(255,255,255,.94); color: var(--ink); }