@charset "utf-8";

/* variables */
:root {
  /* base values - vwを使って画面サイズに応じて自動拡大 */
  --font-size-base: clamp(16px, calc(0.35vw + 14px), 30px);
  --font-family-base: sans-serif;
  --line-height-base: 1.4;

  /* 文字以外の要素のバランス用 */
  --spacing-unit: 0.25rem;

  /* Typography Scale */
  --font-scale-xs: 0.625;
  --font-scale-sm: 0.75;
  --font-scale-md-sm: 0.875;
  --font-scale-base: 1;
  --font-scale-md: 1.125;
  --font-scale-lg: 1.25;
  --font-scale-xl: 1.5;
  --font-scale-2xl: 1.875;
  --font-scale-3xl: 2.25;

  /* Typography Sizes */
  --font-size-xs: calc(var(--font-size-base) * var(--font-scale-xs));
  --font-size-sm: calc(var(--font-size-base) * var(--font-scale-sm));
  --font-size-md-sm: calc(var(--font-size-base) * var(--font-scale-md-sm));
  --font-size-base-calc: calc(var(--font-size-base) * var(--font-scale-base));
  --font-size-md: calc(var(--font-size-base) * var(--font-scale-md));
  --font-size-lg: calc(var(--font-size-base) * var(--font-scale-lg));
  --font-size-xl: calc(var(--font-size-base) * var(--font-scale-xl));
  --font-size-2xl: calc(var(--font-size-base) * var(--font-scale-2xl));
  --font-size-3xl: calc(var(--font-size-base) * var(--font-scale-3xl));

  /* theme colors */
  --color-primary-super-pale: #fff0fb;
  --color-primary-pale: #f8d0dd;
  --color-primary-light: #e9a5bb;
  --color-primary: #e989a7;
  --color-primary-darker: #d36f8f;
  --color-primary-dark: #cf6284;
  --color-primary-super-dark: #be5275;

  /* Application Colors */
  --color-memo: #37B790; /* メモ */
  --color-contact: #4192E6; /* 連絡先 */
  --color-evidence-pdf: #E0A201; /* 証拠書類号証押印 */
  --color-file-manager: #A221D1; /* ファイル管理 */
  --color-manual: #D12124; /* マニュアル */
  --color-case: #c35602; /* 案件管理 */

  /* Mono Colors */
  --color-black: #333333;
  --color-white: #ffffff;

  /* gray color */
  --color-gray-pale: #eeeeee;
  --color-gray-lighter: #cccccc;
  --color-gray-light: #aaaaaa;
  --color-gray: #7f7f7f;
  --color-gray-darker: #666666;
  --color-gray-dark: #4a4a4a;
  --color-gray-super-dark: #333333;

  /* other colors */
  --color-error: #d9304f;

  --box-shadow-default: 0 2px 3px 3px rgba(0, 0, 0, .15);

  /* Glassmorphism */
  --glass-border: 2px solid white;
  --glass-filter: blur(6px);
  --glass-bg-color: rgba(255, 255, 255, .35);
}

/* common */
html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

/* Hash Link Anchor */
section[id] {
  scroll-margin-top: 6rem;
}

body {
  position: relative;
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-base);
  color: var(--color-gray-super-dark);
  background-color: var(--color-primary-super-pale);
  background-image:
    radial-gradient(1200px at 15% 20%, rgba(233, 137, 167, 0.25), transparent 60%),
    radial-gradient(800px at 85% 0%, rgba(221, 184, 236, 0.35), transparent 55%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 240, 251, 0.5));
  min-height: 100vh;
  min-height: calc(var(--vvh, 1vh) * 100);
  font-weight: 600;
  line-height: 1.6;
  overflow-x: hidden;
}

/* buttons */
.buttons {
  margin-top: 1rem;
  text-align: center;
}
.btn-glass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.6rem;
  border-radius: 999px;
  border: 1px solid rgba(233, 137, 167, 0.4);
  background: rgba(255, 255, 255, 0.55);
  color: var(--color-primary-dark);
  font-size: var(--font-size-md-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  backdrop-filter: blur(12px);
}
.btn-glass--ghost {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(233, 137, 167, 0.1);
}

/* Text */
.desc p {
  text-align: left;
}
.desc p + p {
  margin-top: .5rem;
}
[data-masked-lines] {
  position: relative;
}
.masked-line {
  display: block;
  overflow: hidden;
  clip-path: inset(0 0 100% 0);
}
[data-prepare-text] {
  position: relative;
}
.prepare-line {
  display: inline-block;
  position: relative;
  transform: translateY(100%);
  opacity: 0;
}

/* image */
img {
  vertical-align: bottom;
}

/* header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
}
.header-bubble-menu {
  position: fixed;
  top: clamp(-5rem, -10vh, -10rem);
  left: 50%;
  transform: translateX(-50%);
  width: clamp(10rem, 10vw, 20rem);
  height: clamp(10rem, 10vw, 20rem);
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border-radius: 50%;
  box-shadow: var(--box-shadow-default);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
}
.header-bubble-menu a {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.header-bubble-menu a::after {
  content: '';
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0));
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}
.header-bubble-menu img {
  width: clamp(6rem, 6vw, 12rem);
  height: auto;
  margin-top: clamp(4rem, 4.5vw, 8rem);
}

/* main */
main {
  position: relative;
}

/* section */
section {
  position: relative;
  padding: clamp(3rem, 4vw, 5rem) 0;
  overflow: hidden;
}
section.section-alt {
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 240, 251, 0.55));
}
.section-heading {
  margin: 0 auto clamp(2rem, 3vw, 2.5rem);
  text-align: left;
  display: grid;
  gap: 0.75rem;
}
.section-title {
  font-size: clamp(calc(var(--font-size-base) * 1.8), 3vw, calc(var(--font-size-base) * 2.2));
  font-weight: 700;
}
.section-tag  {
  display: inline-block;
  font-size: var(--font-size-md-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
}
.section-lead {
  font-size: clamp(var(--font-size-base-calc), 2vw, calc(var(--font-size-base) * 1.1));
  color: var(--color-gray-dark);
}
.section-body {
  display: grid;
  gap: clamp(1.25rem, 2vw, 2rem);
}
.section-body-split {
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

/* wrapper */
.wrapper {
  max-width: clamp(100%, 90vw, 120rem);
  margin: 0 auto;
  padding: 0 1rem;
}

/* glass components */
.glass-panel,
.glass-card {
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  border-radius: 1.5rem;
  box-shadow: 0 18px 45px rgba(233, 137, 167, 0.12);
  padding: clamp(1rem, 1.5vw, 1.75rem);
  color: var(--color-gray-super-dark);
  position: relative;
  overflow: hidden;
}
.glass-card {
  display: grid;
  gap: 1rem;
}
.panel-title,
.card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: .25rem;
}
.glass-card-img img {
  display: block;
  max-height: 180px;
  height: 100%;
  width: auto;
  margin: 0 auto;
  max-width: 480px;
}

/* rich panels */
.round-rich-panel {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: clamp(1rem, 1.5vw, 1.75rem) clamp(1.5rem, 2vw, 3rem);
  border-radius: 999px;
  box-shadow: var(--box-shadow-default);
}
.round-rich-panel i[class|="lf21"] {
  font-size: clamp(calc(var(--font-size-base) * 2.222), 4vw, calc(var(--font-size-base) * 4.444));
  color: var(--color-white);
}
.round-rich-panel p {
  font-size: var(--font-size-md-sm);
}

.glass-bg-accent {
  position: relative;
}
.glass-bg-accent:before {
  content: "";
  position: absolute;
  top: -1rem;
  left: -1rem;
  width: 10rem;
  height: 10rem;
  background: var(--color-primary-dark);
  border-radius: 50%;
  opacity: 0.5;
}

/* card grids */
.card-grid {
  display: grid;
  gap: clamp(1.25rem, 2vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.card-grid--three {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

/* split text */
.split-text {
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.6;
  font-size: clamp(var(--font-size-md), 4vw, calc(var(--font-size-base) * 1.25));
}
.char {
  outline: 1px dotted var(--color-gray-super-dark);
}
.word {
  border: 1.5px dashed var(--color-primary-dark);
  padding: .5rem;
  margin: 0.25rem;
  border-radius: 10px;
  background: var(--color-white);
}

/* #mv */
#mv {
  position: relative;
  overflow: hidden;
  min-height: clamp(720px, calc(var(--vvh, 1vh) * 130), 1400px);
  padding: 0;
}
#mv .wrapper {
  position: relative;
  min-height: inherit;
}
#mv .mv-visual {
  position: relative;
  width: 100%;
  margin: 0 auto;
  padding: 0;
  overflow: visible;
  min-height: inherit;
}
.mv-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  width: 100%;
  height: 150vh;
  height: calc(var(--vvh, 1vh) * 150);
  overflow: visible;
  opacity: .1;
}
.mv-bg-shape {
  position: absolute;
  display: block;
  max-width: none;
  transform-origin: center;
}
#mv .mv-circles-layer {
  position: absolute;
  inset: 0;
  min-height: inherit;
  height: 100%;
}
.circle {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 40%;
  opacity: 0;
  margin: -19px auto;
  transition: transform 1s cubic-bezier(0.14, 0.15, 0.13, 0.99);
}
#mv .mv-lead {
  position: absolute;
  inset: 0;
  pointer-events: none;
  height: fit-content;
}
#mv .mv-lead-inner {
  width: 100%;
  will-change: transform, opacity;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: calc(100vh - clamp(4rem, 22vw, 6rem));
  height: calc(var(--vvh, 1vh) * 100 - clamp(4rem, 22vw, 6rem));
}
.mv-lead-desc {
  font-size: clamp(var(--font-size-base-calc), 2vw, calc(var(--font-size-base) * 1.1));
}
.mv-lead-desc p + p {
  margin-top: 1rem;
}
.mv-desc {
  text-align: center;
  margin-top: 1rem;
}
.mv-desc .desc p {
  text-align: center;
  margin-top: .5rem;
  color: var(--color-primary);
}
.mv-app-point {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.mv-app-point span {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
}
.mv-app-point span:nth-child(1) {
  background: var(--color-memo);
}
.mv-app-point span:nth-child(2) {
  background: var(--color-contact);
}
.mv-app-point span:nth-child(3) {
  background: var(--color-case);
}
.mv-app-point span:nth-child(4) {
  background: var(--color-evidence-pdf);
}
.mv-app-point span:nth-child(5) {
  background: var(--color-file-manager);
}
.mv-app-point span:nth-child(6) {
  background: var(--color-manual);
}

/* mv-lead-inner-top */
#mv .mv-lead-inner-top {
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  border-radius: 1.5rem;
  padding: clamp(1rem, 1.5vw, 1.75rem);
  min-height: inherit;
  box-shadow: 0 18px 45px rgba(233, 137, 167, 0.12);
  height: calc(var(--vvh, 1vh) * 100 - 2rem);
  contain: layout paint;
  margin: 1rem auto;
}
#mv .mv-lead-inner-top img {
  width: clamp(130px, 30vh, 300px);
  width: clamp(130px, calc(var(--vvh, 1vh) * 30), 300px);
  height: auto;
  display: block;
  margin: 2rem auto 1rem;
}

/* App Box */
.app-boxes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.75rem);
  width: 100%;
  position: relative;
}
.app-boxes-title {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(0.5rem, 1vw, 1rem);
}
.app-boxes .desc {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(1rem, 2vw, 1.75rem);
}
.app-boxes-stack {
  position: relative;
  width: 100%;
  height: 30rem;
  margin: 0;
  overflow: visible;
  isolation: isolate;
}
.app-box {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(5rem, 7vw, 9rem);
  height: clamp(5rem, 7vw, 9rem);
  border-radius: 1.35rem;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
  will-change: transform, opacity;
  box-shadow: 0 20px 38px rgba(13, 24, 44, 0.25);
  z-index: 0;
}

/* app-box 落下アニメーション */
.app-boxes-stack .app-box {
  pointer-events: none;
}
.app-box[data-variant="1"] {
  background: var(--color-memo);
}
.app-box[data-variant="2"] {
  background: var(--color-contact);
}
.app-box[data-variant="3"] {
  background: var(--color-case);
}
.app-box[data-variant="4"] {
  background: var(--color-evidence-pdf);
}
.app-box[data-variant="5"] {
  background: var(--color-file-manager);
}
.app-box[data-variant="6"] {
  background: var(--color-manual);
}
.app-box i[class|="lf21"] {
  font-size: clamp(calc(var(--font-size-base) * 2), 2vw, calc(var(--font-size-base) * 3));
  color: var(--color-white);
}
.app-boxes-title {
  font-size: clamp(calc(var(--font-size-base) * 1.4), 2.6vw, calc(var(--font-size-base) * 1.9));
  font-weight: 700;
  text-align: center;
  color: var(--color-primary-dark);
  text-shadow: 0 18px 42px rgba(0, 0, 0, 0.35);
  position: relative;
  z-index: 1;
}

/* #about */
#about {
  padding-top: 0;
}
#about .section-body {
  gap: clamp(2rem, 3vw, 3rem);
}
#about .glass-bg-accent:nth-child(1):before {
  background: #5196db;
}
#about .glass-bg-accent:nth-child(2):before {
  background: #db7f51;
}
#about .glass-bg-accent:nth-child(3):before {
  background: #af51db;
}
#about .glass-bg-accent:nth-child(4):before {
  background: #db5196;
}
#about .glass-bg-accent:nth-child(5):before {
  background: #51db96;
}

/* #apps */
#apps .app-boxes {
  margin-top: 2rem;
  display: flex;
  justify-content: space-around;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(1rem, 2vw, 2.5rem);
  width: 100%;
}
#apps .app-box {
  position: static;
  transform: none;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 12px 26px rgba(13, 24, 44, 0.16);
  transition: transform 0.28s ease, box-shadow 0.28s ease, filter 0.28s ease;
  outline: none;
}
#apps .app-box:focus-visible {
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.65), 0 0 0 8px rgba(233, 137, 167, 0.45);
}
#apps .app-box.is-active {
  transform: translateY(-4px);
}
#apps .app-box[data-variant="1"].is-active {
  box-shadow:
    0 18px 32px rgba(13, 24, 44, 0.18),
    0 0 0 6px rgba(55, 183, 144, 0.32);
}
#apps .app-box[data-variant="2"].is-active {
  box-shadow:
    0 18px 32px rgba(13, 24, 44, 0.18),
    0 0 0 6px rgba(65, 146, 230, 0.32);
}
#apps .app-box[data-variant="3"].is-active {
  box-shadow:
    0 18px 32px rgba(13, 24, 44, 0.18),
    0 0 0 6px rgba(193, 84, 0, 0.32);
}
#apps .app-box[data-variant="4"].is-active {
  box-shadow:
    0 18px 32px rgba(13, 24, 44, 0.18),
    0 0 0 6px rgba(224, 162, 1, 0.32);
}
#apps .app-box[data-variant="5"].is-active {
  box-shadow:
    0 18px 32px rgba(13, 24, 44, 0.18),
    0 0 0 6px rgba(162, 33, 209, 0.32);
}
#apps .app-box[data-variant="6"].is-active {
  box-shadow:
    0 18px 32px rgba(44, 13, 13, 0.18),
    0 0 0 6px rgba(183, 55, 55, 0.32);
}
.app-description {
  margin-top: 2rem;
  width: 100%;
}
.app-description-inner {
  padding: 1rem;
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  box-shadow: var(--box-shadow-default);
  border-radius: 1rem;
  overflow: hidden;
}
.app-description-title {
  margin-bottom: .25rem;
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-primary-dark);
  text-shadow: 0 18px 42px rgba(0, 0, 0, 0.35);
}
.app-description-inner[data-variant="1"] .app-description-title {
  color: var(--color-memo);
}
.app-description-inner[data-variant="2"] .app-description-title {
  color: var(--color-contact);
}
.app-description-inner[data-variant="3"] .app-description-title {
  color: var(--color-case);
}
.app-description-inner[data-variant="4"] .app-description-title {
  color: var(--color-evidence-pdf);
}
.app-description-inner[data-variant="5"] .app-description-title {
  color: var(--color-file-manager);
}
.app-description-inner[data-variant="6"] .app-description-title {
  color: var(--color-manual);
}

/* #price */
.price-free {
  padding: 1rem;
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  box-shadow: var(--box-shadow-default);
  border-radius: 1rem;
  overflow: hidden;
}
.price-free h3 {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  margin-bottom: 1rem;
}

/* #faq */
.faq-item {
  margin-bottom: 2rem;
}
.faq-item:last-child {
  margin-bottom: 0;
}
.faq-item {
  margin-bottom: 1.25rem;
  background: var(--color-white);
  border: 2px solid var(--color-primary-pale);
  border-radius: 1rem;
  overflow: hidden;
}
.faq-item dt {
  position: relative;
  padding: 1rem 3rem 1rem 1rem;
  cursor: pointer;
  color: var(--color-primary-dark);
  font-weight: 700;
  background: linear-gradient(90deg, var(--color-primary-super-pale) 0%, transparent 100%);
  line-height: 1.6;
}
/* FAQ */
.faq-item dd {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  pointer-events: none;
  background: var(--color-white);
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-item dt.open + dd {
  pointer-events: auto;
}
.faq-item .faq-answer-body {
  padding: 1rem;
  color: var(--color-black);
}
.faq-item .faq-answer-body::before {
  content: 'A.';
  font-weight: 700;
  color: var(--color-primary);
  padding-right: 0.5em;
}
@media (prefers-reduced-motion: reduce) {
  .faq-item dd {
    transition: none;
  }
}
.faq-item dt::before {
  content: 'Q.';
  font-size: var(--font-size-base-calc);
  font-weight: 800;
  padding-right: 0.5em;
  color: var(--color-primary);
  display: inline-block;
}
.faq-item dt i::before,
.faq-item dt i::after {
  content: '';
  width: 1.25rem;
  height: 3px;
  display: block;
  position: absolute;
  right: 1.25rem;
  top: 50%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-default);
}
.faq-item dt i::after {
  transform: rotate(90deg);
}
.faq-item dt.open i::after {
  transform: rotate(0);
  opacity: 0;
}
/* #company */
.company-info {
  padding: 2rem 1rem;
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  border-radius: 1rem;
  box-shadow: var(--box-shadow-default);
  font-size: var(--font-size-md-sm);
}
.company-info-inner + .company-info-inner {
  margin-top: .25rem;
  padding-top: .75rem;
  border-top: 1px solid var(--color-primary-pale);
}
.company-info-title {
  color: var(--color-primary);
  margin-bottom: .25rem;
}
.company-info-text + .company-info-text {
  margin-top: .5rem;
}


/* contact form */
.contact-forms {
  width: 100%;
  margin: 0 auto;
}
.contact-form {
  display: grid;
  gap: 1.5rem;
}
.contact-form-field label {
  display: inline-flex;
  align-items: center;
  margin-bottom: .5rem;
  gap: .5rem;
}
.contact-form-field input,
.contact-form-field select,
.contact-form-field textarea {
  width: 100%;
  padding: .5rem 1rem;
  border: 1px solid var(--color-gray-light);
  border-radius: .5rem;
  background-color: var(--color-white);
  font-size: var(--font-size-base-calc);
  line-height: 1.5;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.contact-form-field input:focus,
.contact-form-field select:focus,
.contact-form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow:var(--box-shadow-default);
}
.contact-form-field textarea {
  resize: vertical;
  min-height: 160px;
}
.contact-form-field input.is-error,
.contact-form-field select.is-error,
.contact-form-field textarea.is-error {
  border-color: var(--color-error);
  box-shadow:var(--box-shadow-default);
}
.contact-form-field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%#e989a7' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}
.contact-form-field-required .contact-form-required {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .25rem .5rem;
  border-radius: 999px;
  background: var(--color-error);
  color: var(--color-white);
  font-size: var(--font-size-xs);
}
.contact-form-error {
  margin-top: .5rem;
  color: var(--color-error);
  font-size: var(--font-size-sm);
}
.contact-form-actions {
  display: flex;
  justify-content: center;
}
.contact-form-button {
  padding: .75rem 1.5rem;
  font-size: var(--font-size-base-calc);
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  font-weight: 700;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.contact-form-button-secondary {
  background: var(--color-white);
  color: var(--color-gray-super-dark);
  border: 1px solid var(--color-gray-light);
}
.contact-form-result {
  text-align: center;
  min-height: 1.25rem;
  color: var(--color-primary);
  transition: opacity 0.2s ease;
}
.contact-form-result-success {
  color: var(--color-primary);
}
.contact-form-result-error {
  color: var(--color-error);
}
.contact-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background-color: rgba(15, 17, 23, 0.32);
  z-index: 99999;
}
.contact-modal[data-open="true"] {
  display: flex;
}
.contact-modal-overlay {
  position: absolute;
  inset: 0;
  background: transparent;
}
.contact-modal-content {
  position: relative;
  max-width: 900px;
  width: 100%;
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: var(--box-shadow-default);
  overflow: hidden;
  max-height: min(85vh, 900px);
  max-height: min(calc(var(--vvh, 1vh) * 85), 900px);
  display: flex;
  flex-direction: column;
}
.contact-modal-close {
  position: absolute;
  top: .75rem;
  right: .75rem;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 50%;
  background: var(--color-gray-light);
  cursor: pointer;
}
.contact-modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}
.contact-modal-body-center {
  text-align: center;
}
.contact-modal-close::before,
.contact-modal-close::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: .75rem;
  height: 2px;
  background: var(--color-gray-dark);
  transform-origin: center;
}
.contact-modal-close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.contact-modal-close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}
.contact-modal-title {
  font-size: var(--font-size-lg);
  text-align: center;
}
.contact-modal-message {
  font-size: var(--font-size-base-calc);
  line-height: 1.7;
  color: rgba(26, 26, 26, 0.78);
}
.contact-modal-list {
  margin: 0;
  padding: 0;
}
.contact-modal-rows {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: grid;
  gap: 1rem;
  overscroll-behavior: contain;
}
.contact-modal-row {
  position: relative;
}
.contact-modal-row dt {
  position: sticky;
  top: 0;
  padding: .5rem;
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
}
.contact-modal-row dd {
  margin: 0;
  padding: .5rem;
  min-height: 3rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.contact-modal-placeholder {
  color: rgba(26, 26, 26, 0.48);
  font-style: italic;
}
.contact-modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(26, 26, 26, 0.08);
  position: sticky;
  bottom: 0;
}

body.modal-open {
  overflow: hidden;
}

/* footer */
footer {
  background: var(--color-primary-light);
  padding: 2.5rem 0 6rem;
  color: var(--color-gray);
}
.footer-menu {
  padding: 0 .5rem;
}
.footer-menu ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
}
.footer-menu ul li {
  font-size: var(--font-size-sm);
  color: var(--color-white);
}
.footer-menu ul li a {
  color: var(--color-white);
  text-decoration: none;
}
.footer-under {
  display: flex;
  gap: 1rem;
  padding: 0 .5rem;
  align-items: flex-end;
  justify-content: space-between;
  margin-top: 3rem;
}
.footer-logo {
  text-align: center;
}
.footer-logo img {
  width: clamp(6rem, 6vw, 10rem);
}
.footer-copy {
  text-align: left;
  font-size: var(--font-size-xs);
  color: var(--color-white);
  font-weight: normal;
}

/* footer link button */
.footer-link-button {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  width: auto;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  padding: 0.5rem;
  border-radius: 999px;
  box-shadow: var(--box-shadow-default);
  background: var(--glass-bg-color);
  backdrop-filter: var(--glass-filter);
  border: var(--glass-border);
}
.footer-link-button.show {
  opacity: 1;
}
.footer-link-button a {
  position: relative;
  text-decoration: none;
  text-align: center;
  padding: .5rem .75rem;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 999px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  display: flex;
  gap: .25rem;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  font-size: var(--font-size-md-sm);
  width: max-content;
}

/* tablet */
@media screen and (min-width: 680px) {
  :root {
    /* base values - タブレット以上は少し大きく */
    --font-size-base: clamp(18px, calc(0.4vw + 16px), 32px);
    --line-height-base: 1.6;
  }

  /* wrapper */
  .wrapper {
    padding: 0;
    max-width: clamp(80%, 85vw, 120rem);
  }

  /* card grid */
  .card-grid--three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* App Box - iPad用に調整（大きすぎないように） */
  .app-box {
    width: clamp(6rem, 8vw, 10rem);
    height: clamp(6rem, 8vw, 10rem);
  }
  .app-box i[class|="lf21"] {
    font-size: clamp(calc(var(--font-size-base) * 2.5), 2.8vw, calc(var(--font-size-base) * 3.5));
  }

  /* #mv */
  #mv .mv-lead-inner {
    height: calc(100vh - clamp(1rem, 22vw, 2rem));
    height: calc(var(--vvh, 1vh) * 100 - clamp(1rem, 22vw, 2rem));
    padding: 0;
  }

  /* #apps */
  #apps .app-boxes {
    justify-content: space-evenly;
    width: 100%;
  }
  .app-boxes-stack {
    width: 100%;
  }
}

/* responsive */
@media screen and (max-width: 680px) {
  .sp-only {
    display: block;
  }
  .pc-only {
    display: none;
  }
}

/* PC */
@media screen and (min-width: 1024px) {
  :root {
    /* base values　*/
    --font-size-base: clamp(20px, calc(0.5vw + 18px), 38px);
    --line-height-base: 1.8;
  }

  /* responsive */
  *.pc-only {
    display: block;
  }
  *.sp-only {
    display: none;
  }

  /* App Box */
  .app-box {
    width: clamp(7.5rem, 11vw, 15.75rem);
    height: clamp(7.5rem, 11vw, 15.75rem);
  }
  .app-box i[class|="lf21"] {
    font-size: clamp(calc(var(--font-size-base) * 4), 5vw, calc(var(--font-size-base) * 8));
  }

  /* split-text */
  .split-text {
    font-size: clamp(calc(var(--font-size-base) * 1.125), calc(1.4vw + 0.25rem), calc(var(--font-size-base) * 3.5));
  }

  /* login button */
  .login-button {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 9999;
  }
  .login-button a {
    position: relative;
    text-decoration: none;
    text-align: center;
    padding: 1rem 1rem 1rem 2rem;
    background: var(--glass-bg-color);
    backdrop-filter: var(--glass-filter);
    border: var(--glass-border);
    color: var(--color-primary);
    border-radius: 0 0 0 70px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    display: flex;
    gap: .25rem;
    align-items: center;
    justify-content: center;
    box-shadow: var(--box-shadow-default);
    font-size: var(--font-size-md-sm);
    width: max-content;
  }
  .login-button a::after {
    content: '';
    position: absolute;
    inset: 8px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(233, 137, 167, 0.12), rgba(255, 255, 255, 0));
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
  }
  .header-bubble-menu:hover a {
    transform: translateY(-6%) scale(1.04);
    box-shadow: 0 22px 32px rgba(233, 137, 167, 0.35);
  }
  .header-bubble-menu:hover a::after {
    opacity: 1;
  }
  .login-button a:hover {
    transform: translateY(3px) scale(1.02);
    box-shadow: 0 18px 28px rgba(233, 137, 167, 0.28);
  }
  .login-button a:hover::after {
    opacity: 1;
  }

  /* wrapper */
  .wrapper {
    max-width: clamp(1000px, 80vw, 3280px);
  }
  .hero__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .section-body--split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .card-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .round-rich-panel {
    padding: clamp(.5rem, 1.5vw, .875rem) clamp(1.25rem, 2vw, 1.75rem);
  }

  /* #mv */
  #mv .mv-lead-inner.mv-lead-inner-top {
    padding: clamp(2rem, 3vw, 2.5rem);
    display: grid;
    gap: clamp(1rem, 1.5vw, 1.5rem);
    grid-template-columns: 1.75fr 2fr;
    height: calc(100vh - clamp(3rem, 6vw, 6rem));
    height: calc(var(--vvh, 1vh) * 100 - clamp(3rem, 6vw, 6rem));
  }
  #mv .mv-lead-inner.mv-lead-inner-top .mv-img img {
    width: 100%;
  }

  /* #about */
  #about .section-body {
    gap: clamp(1rem, 3vw, 1.75rem);
  }

  /* #apps */
  #apps .apps-contents {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(1rem, 1.5vw, 1.75rem);
    flex-direction: row;
  }
  #apps .app-boxes {
    flex-wrap: wrap;
    justify-content: start;
  }
  .app-boxes-title {
    margin-top: 2rem;
  }
  #apps .app-box[data-variant="1"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(55, 183, 144, 0.28);
  }
  #apps .app-box[data-variant="2"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(65, 146, 230, 0.28);
  }
  #apps .app-box[data-variant="3"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(193, 84, 0, 0.32);
  }
  #apps .app-box[data-variant="4"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(224, 162, 1, 0.32);
  }
  #apps .app-box[data-variant="5"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(162, 33, 209, 0.32);
  }
  #apps .app-box[data-variant="6"].is-active {
    box-shadow:
      0 18px 32px rgba(13, 24, 44, 0.18),
      0 0 0 12px rgba(183, 55, 55, 0.32);
  }

  /* app-boxes-stack */
  .app-boxes-stack {
    height: 26rem;
  }

  /* footer */
  .footer-menu ul {
    flex-direction: row;
  }

  /* Hover Effects */
  .btn-glass:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(233, 137, 167, 0.22);
    background: rgba(255, 255, 255, 0.7);
  }
  .btn-glass--ghost:hover {
    background: rgba(233, 137, 167, 0.18);
  }
  .contact-form-button:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-default);
  }
  .footer-link-button a:hover {
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-default);
  }
}

/* Animation Styles */
@keyframes scroll {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(10px);
  }
}