@charset "UTF-8";
/* ==========================================================
   network.scss  別デザイン案C：ダークの星座ネットワーク版（/network/）
   正本。network.css はここからコンパイルする。
   ========================================================== */
/* ---------- tokens ---------- */
/* 全ルールを .design_dark の中に閉じる（ライト案と同じページに同居するため） */
.design_dark {
  /* ルート：旧 body の指定はここに持つ */
}
.design_dark {
  --dk_bg: #050b18;
  --dk_text: #e8eef9;
  --dk_accent: #5aa9ff;
  position: relative;
  min-height: 100vh;
  color-scheme: dark;
  background: #050b18;
  color: #e8eef9;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
.design_dark {
  /* 固定ヘッダーの下にセクション見出しが隠れないように */
}
.design_dark section[id] {
  scroll-margin-top: 84px;
}
.design_dark {
  /* ---------- reset / base ---------- */
}
.design_dark *,
.design_dark *::before,
.design_dark *::after {
  box-sizing: border-box;
}
.design_dark h1,
.design_dark h2,
.design_dark h3,
.design_dark p,
.design_dark ul,
.design_dark ol,
.design_dark dl,
.design_dark dd,
.design_dark figure {
  margin: 0;
  padding: 0;
}
.design_dark ul,
.design_dark ol {
  list-style: none;
}
.design_dark img {
  display: block;
  max-width: 100%;
  height: auto;
}
.design_dark a {
  color: #9fd4ff;
}
.design_dark button {
  font: inherit;
  color: inherit;
}
.design_dark :focus-visible {
  outline: 2px solid #9fd4ff;
  outline-offset: 3px;
  border-radius: 6px;
}
.design_dark .visually_hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.design_dark .skip_link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 8px 16px;
  background: #5aa9ff;
  color: #050b18;
  font-size: 14px;
  font-weight: 700;
  border-radius: 6px;
  text-decoration: none;
}
.design_dark .skip_link:focus {
  top: 12px;
}
.design_dark {
  /* 全面の背景：夜の等高線 */
}
.design_dark .topo_canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  background: radial-gradient(ellipse at 70% 0%, #0b1a35 0%, #050b18 55%, #02060f 100%);
}
.design_dark .dk_main,
.design_dark .header_area,
.design_dark .footer_area {
  position: relative;
  z-index: 1;
}
.design_dark .inner_box {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 640px) {
  .design_dark .inner_box {
    padding: 0 16px;
  }
}
.design_dark {
  /* ---------- 共通パーツ ---------- */
}
.design_dark .glass_card {
  position: relative;
  background: rgba(12, 24, 46, 0.82);
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 16px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset, 0 20px 50px rgba(0, 0, 0, 0.35);
}
.design_dark .btn_primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 32px;
  background: #5aa9ff;
  color: #04101f;
  font-size: 16px;
  font-weight: 700;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 0 0 1px rgba(159, 212, 255, 0.5), 0 0 24px rgba(90, 169, 255, 0.45);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.design_dark .btn_primary:hover {
  background: #9fd4ff;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(159, 212, 255, 0.8), 0 0 36px rgba(90, 169, 255, 0.7);
}
.design_dark section {
  padding: 120px 0 0;
}
@media (max-width: 640px) {
  .design_dark section {
    padding: 88px 0 0;
  }
}
.design_dark .sec_label {
  margin-bottom: 8px;
  color: #ffa45c;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.design_dark .sec_title {
  color: #fff;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 0.03em;
}
.design_dark .sec_lead {
  margin-top: 12px;
  color: #9db0cb;
  font-size: 16px;
}
.design_dark {
  /* ---------- header ---------- */
}
.design_dark .header_area {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 11, 24, 0.92);
  border-bottom: 1px solid rgba(130, 175, 255, 0.18);
}
.design_dark .header_inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
}
.design_dark .header_logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
@media (max-width: 640px) {
  .design_dark .header_logo {
    font-size: 13px;
  }
}
.design_dark .header_mark {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #9fd4ff;
  box-shadow: 0 0 10px #5aa9ff, 14px 4px 0 -3px #ffa45c;
}
.design_dark .header_nav ul {
  display: flex;
  gap: 24px;
}
.design_dark .header_nav li {
  flex-shrink: 0;
}
.design_dark .header_nav a {
  color: #9db0cb;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}
.design_dark .header_nav a:hover {
  color: #fff;
}
@media (max-width: 900px) {
  .design_dark .header_nav {
    display: none;
  }
}
.design_dark .header_btn {
  flex-shrink: 0;
  padding: 8px 20px;
  border: 1px solid rgba(140, 200, 255, 0.45);
  border-radius: 999px;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
}
.design_dark .header_btn:hover {
  background: rgba(90, 169, 255, 0.18);
  border-color: #9fd4ff;
}
@media (max-width: 640px) {
  .design_dark .header_btn {
    padding: 6px 14px;
    font-size: 13px;
  }
}
.design_dark {
  /* ---------- hero ---------- */
}
.design_dark .hero_area {
  padding: 0 0 40px;
}
@media (max-width: 640px) {
  .design_dark .hero_area {
    padding: 0 0 24px;
  }
}
.design_dark {
  /* 光る日本列島（WebGL）を背面に敷く舞台 */
}
.design_dark .hero_stage {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100vh - 64px);
  min-height: calc(100svh - 64px);
  padding: 72px 0 140px;
  overflow: hidden;
}
@media (max-width: 900px) {
  .design_dark .hero_stage {
    align-items: flex-start;
    padding: 56px 0 200px;
  }
}
@media (max-width: 640px) {
  .design_dark .hero_stage {
    min-height: 0;
    padding: 40px 0 190px;
  }
}
.design_dark .japan_canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s;
}
.design_dark .japan_canvas.is_on {
  opacity: 1;
}
.design_dark .hero_inner {
  position: relative;
  z-index: 2;
}
.design_dark {
  /* 見出しの背面に薄い暗幕 */
}
.design_dark .hero_copy {
  position: relative;
  max-width: 600px;
}
.design_dark .hero_copy::before {
  content: "";
  position: absolute;
  inset: -60px -120px -60px -80px;
  z-index: -1;
  background: radial-gradient(closest-side, rgba(5, 11, 24, 0.82), rgba(5, 11, 24, 0.55) 60%, rgba(5, 11, 24, 0) 100%);
  pointer-events: none;
}
@media (max-width: 640px) {
  .design_dark .hero_copy::before {
    inset: -30px -16px;
  }
}
.design_dark .japan_note {
  position: absolute;
  right: 32px;
  bottom: 28px;
  z-index: 2;
  max-width: 360px;
  padding: 12px 16px;
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 12px;
  background: rgba(5, 11, 24, 0.72);
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: right;
}
@media (max-width: 640px) {
  .design_dark .japan_note {
    right: 16px;
    left: 16px;
    bottom: 20px;
    max-width: none;
    text-align: left;
  }
}
.design_dark .japan_count {
  color: #fff;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.design_dark .japan_count small {
  margin-left: 4px;
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
}
.design_dark .japan_legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px 14px;
  margin-top: 4px;
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
}
.design_dark .japan_legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  white-space: nowrap;
}
.design_dark .japan_legend span::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.design_dark .japan_legend b {
  color: #e8eef9;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 500;
}
@media (max-width: 640px) {
  .design_dark .japan_legend {
    justify-content: flex-start;
  }
}
.design_dark .japan_legend_stay::before {
  background: #ffb46b;
  box-shadow: 0 0 8px #ffb46b;
}
.design_dark .japan_legend_way::before {
  background: #9fd0ff;
  box-shadow: 0 0 8px #9fd0ff;
}
.design_dark .japan_caption {
  margin-top: 4px;
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 11px;
  line-height: 1.6;
}
.design_dark .hero_code_row {
  position: relative;
  z-index: 2;
}
.design_dark .hero_code_row .code_card {
  max-width: 760px;
  margin: 0 auto;
}
.design_dark .hero_eyebrow {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid rgba(140, 200, 255, 0.45);
  border-radius: 999px;
  color: #9fd4ff;
  font-size: 13px;
  font-weight: 500;
}
.design_dark .hero_title {
  margin-top: 20px;
  color: #fff;
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: 0.02em;
}
.design_dark .hero_mark {
  color: #9fd4ff;
  text-shadow: 0 0 24px rgba(90, 169, 255, 0.55);
}
.design_dark .hero_text {
  margin-top: 24px;
  color: #9db0cb;
  font-size: 16px;
}
.design_dark .hero_btn {
  margin-top: 32px;
}
.design_dark .hero_proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 40px;
}
.design_dark .hero_proof li {
  padding: 14px 12px;
  border-left: 1px solid rgba(140, 200, 255, 0.45);
  color: #9db0cb;
  font-size: 13px;
  line-height: 1.6;
}
.design_dark .hero_proof b {
  display: block;
  color: #fff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  line-height: 1.3;
}
@media (max-width: 640px) {
  .design_dark .hero_proof {
    gap: 6px;
  }
  .design_dark .hero_proof li {
    padding: 10px 8px;
    font-size: 12px;
  }
  .design_dark .hero_proof b {
    font-size: 17px;
  }
}
.design_dark {
  /* コードエディタ風カード */
}
.design_dark .code_card {
  position: relative;
  background: rgba(6, 14, 30, 0.94);
  border: 1px solid rgba(140, 200, 255, 0.45);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(90, 169, 255, 0.08), 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(90, 169, 255, 0.12);
}
.design_dark .code_head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(130, 175, 255, 0.18);
}
.design_dark .code_dots {
  display: flex;
  flex-shrink: 0;
  gap: 6px;
}
.design_dark .code_dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #ff5f57;
}
.design_dark .code_dots i:nth-child(2) {
  background: #febc2e;
}
.design_dark .code_dots i:nth-child(3) {
  background: #28c840;
}
.design_dark .code_file {
  flex-shrink: 0;
  color: #9db0cb;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  white-space: nowrap;
}
.design_dark .code_demo {
  flex-shrink: 0;
  margin-left: auto;
  padding: 2px 10px;
  border: 1px solid rgba(255, 164, 92, 0.5);
  border-radius: 999px;
  color: #ffa45c;
  font-size: 11px;
  white-space: nowrap;
}
.design_dark .code_body {
  height: 400px;
  margin: 0;
  padding: 14px 0;
  overflow-x: hidden;
  overflow-y: auto;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.75;
  tab-size: 2;
}
.design_dark .code_body code {
  display: block;
  counter-reset: ln;
  font-family: inherit;
}
@media (max-width: 640px) {
  .design_dark .code_body {
    height: 340px;
    font-size: 11px;
  }
}
.design_dark {
  /* 長い行は折り返し、行番号の右にぶら下げる */
}
.design_dark .code_line {
  display: block;
  padding: 0 16px 0 56px;
  text-indent: -56px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #c9d6ea;
}
.design_dark .code_line::before {
  counter-increment: ln;
  content: counter(ln);
  display: inline-block;
  width: 56px;
  padding-right: 16px;
  color: #44587a;
  text-align: right;
  text-indent: 0;
  user-select: none;
}
@media (max-width: 640px) {
  .design_dark .code_line {
    padding: 0 10px 0 38px;
    text-indent: -38px;
  }
  .design_dark .code_line::before {
    width: 38px;
    padding-right: 10px;
  }
}
.design_dark .tk_kw {
  color: #c792ea;
}
.design_dark .tk_str {
  color: #a5e0a0;
}
.design_dark .tk_com {
  color: #5f7699;
  font-style: italic;
}
.design_dark .tk_fn {
  color: #82aaff;
}
.design_dark .tk_num {
  color: #ffa45c;
}
.design_dark .tk_pun {
  color: #89ddff;
}
.design_dark .code_caret {
  display: inline-block;
  width: 8px;
  height: 1.2em;
  margin-left: 1px;
  vertical-align: -0.2em;
  background: #9fd4ff;
  animation: dk_caret_blink 1s steps(1) infinite;
}
.design_dark .code_log {
  height: 150px;
  padding: 10px 16px 14px;
  background: rgba(0, 0, 0, 0.35);
  border-top: 1px solid rgba(130, 175, 255, 0.18);
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  overflow: hidden;
}
.design_dark .code_log_title {
  margin-bottom: 4px;
  color: #9db0cb;
  font-size: 11px;
  letter-spacing: 0.1em;
}
.design_dark .code_log_list li {
  color: #b9c8de;
  line-height: 1.8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  animation: dk_log_in 0.35s ease-out both;
}
.design_dark .code_log_list li time {
  margin-right: 10px;
  color: #5f7699;
}
.design_dark .code_log_list li.is_ok {
  color: #7ee2a8;
}
.design_dark {
  /* ---------- case ---------- */
}
.design_dark .case_list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 48px;
  perspective: 900px;
}
@media (max-width: 900px) {
  .design_dark .case_list {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
}
.design_dark .case_item {
  --mx: 50%;
  --my: 50%;
  padding: 32px 28px;
  overflow: hidden;
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.25s ease-out, border-color 0.25s;
  will-change: transform;
}
.design_dark .case_item::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(260px circle at var(--mx) var(--my), rgba(90, 169, 255, 0.22), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.design_dark .case_item:hover {
  border-color: rgba(140, 200, 255, 0.45);
}
.design_dark .case_item:hover::before {
  opacity: 1;
}
@media (max-width: 640px) {
  .design_dark .case_item {
    padding: 24px 20px;
  }
}
.design_dark .case_num {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(140, 200, 255, 0.45);
  border-radius: 50%;
  color: #9fd4ff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
}
.design_dark .case_name {
  position: relative;
  margin-top: 16px;
  color: #fff;
  font-size: clamp(18px, 1.8vw, 21px);
  font-weight: 700;
  line-height: 1.5;
}
.design_dark .case_text {
  position: relative;
  margin-top: 10px;
  color: #9db0cb;
  font-size: 15px;
}
.design_dark {
  /* ---------- calc ---------- */
}
.design_dark .calc_box {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 40px;
  margin-top: 48px;
  padding: 40px;
}
@media (max-width: 900px) {
  .design_dark .calc_box {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 28px;
  }
}
@media (max-width: 640px) {
  .design_dark .calc_box {
    padding: 20px 16px;
  }
}
.design_dark .calc_inputs {
  display: grid;
  gap: 24px;
}
.design_dark .calc_field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 12px;
}
.design_dark .calc_field label {
  color: #e8eef9;
  font-size: 15px;
  font-weight: 500;
}
.design_dark .calc_field input {
  grid-column: 1/-1;
}
.design_dark .calc_value {
  color: #fff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 22px;
  white-space: nowrap;
}
.design_dark .calc_value span {
  margin-left: 4px;
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 13px;
}
.design_dark {
  /* 暗色のスライダー */
}
.design_dark input[type=range] {
  --fill: 50%;
  width: 100%;
  height: 28px;
  margin: 0;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}
.design_dark input[type=range]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(to right, #5aa9ff 0%, #5aa9ff var(--fill), #1b2a46 var(--fill), #1b2a46 100%);
}
.design_dark input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  margin-top: -8px;
  border: 3px solid #9fd4ff;
  border-radius: 50%;
  background: #050b18;
  box-shadow: 0 0 12px rgba(90, 169, 255, 0.7);
}
.design_dark input[type=range]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: #1b2a46;
}
.design_dark input[type=range]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: #5aa9ff;
}
.design_dark input[type=range]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 3px solid #9fd4ff;
  border-radius: 50%;
  background: #050b18;
  box-shadow: 0 0 12px rgba(90, 169, 255, 0.7);
}
.design_dark input[type=range]:focus-visible {
  outline: 2px solid #9fd4ff;
  outline-offset: 4px;
}
.design_dark .calc_result {
  min-width: 0;
}
.design_dark .calc_nums {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 640px) {
  .design_dark .calc_nums {
    gap: 10px;
  }
}
.design_dark .calc_label {
  color: #9db0cb;
  font-size: 13px;
}
.design_dark .calc_big,
.design_dark .calc_mid {
  color: #fff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}
.design_dark .calc_big small,
.design_dark .calc_mid small {
  margin-left: 4px;
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 14px;
}
.design_dark .calc_big {
  font-size: clamp(32px, 4vw, 48px);
  color: #9fd4ff;
  text-shadow: 0 0 20px rgba(90, 169, 255, 0.5);
}
.design_dark .calc_mid {
  font-size: clamp(24px, 3vw, 34px);
}
.design_dark .calc_chart {
  margin-top: 20px;
  padding: 12px 12px 4px;
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.25);
}
.design_dark .calc_legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 12px;
  color: #9db0cb;
}
.design_dark .calc_legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}
.design_dark .calc_legend span::before {
  content: "";
  width: 16px;
  height: 2px;
  background: #5aa9ff;
}
.design_dark .calc_legend .calc_legend_line::before {
  background: #ffa45c;
}
.design_dark .calc_canvas {
  display: block;
  width: 100%;
  height: 220px;
}
@media (max-width: 640px) {
  .design_dark .calc_canvas {
    height: 180px;
  }
}
.design_dark .calc_payback {
  margin-top: 16px;
  font-size: 16px;
}
.design_dark .calc_payback b {
  color: #ffa45c;
  font-size: 20px;
}
.design_dark .calc_note {
  margin-top: 6px;
  color: #9db0cb;
  font-size: 12px;
}
.design_dark {
  /* ---------- works：ブラウン管のチャンネル ---------- */
}
.design_dark .tv_box {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  margin-top: 40px;
}
@media (max-width: 900px) {
  .design_dark .tv_box {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
}
.design_dark .tv_set {
  display: flex;
  gap: 16px;
  padding: 18px;
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 22px;
  background: linear-gradient(160deg, #13223e 0%, #0a1426 60%, #070f1e 100%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 30px 60px rgba(0, 0, 0, 0.45), 0 0 0 6px rgba(10, 20, 38, 0.6);
}
@media (max-width: 640px) {
  .design_dark .tv_set {
    padding: 10px;
    gap: 10px;
    border-radius: 16px;
  }
}
.design_dark .tv_screen {
  position: relative;
  flex: 1;
  min-width: 0;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: 18px/22px;
  background: #02060f;
  outline: none;
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
  box-shadow: inset 0 0 0 2px #050b18, 0 0 24px rgba(90, 169, 255, 0.18);
}
.design_dark .tv_screen::before, .design_dark .tv_screen::after {
  position: absolute;
  inset: 0;
  z-index: 3;
  content: "";
  pointer-events: none;
}
.design_dark .tv_screen::before {
  background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0) 0 2px, rgba(0, 0, 0, 0.22) 2px 3px);
  animation: tv_roll 7s linear infinite;
}
.design_dark .tv_screen::after {
  border-radius: inherit;
  background: radial-gradient(ellipse at 30% 12%, rgba(255, 255, 255, 0.1), transparent 45%), radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
}
.design_dark .tv_screen:focus-visible {
  box-shadow: inset 0 0 0 2px #050b18, 0 0 0 3px #5aa9ff;
}
@media (max-width: 640px) {
  .design_dark .tv_screen {
    border-radius: 12px/14px;
  }
}
@keyframes tv_roll {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 60px;
  }
}
.design_dark .tv_slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: transform 0.23s cubic-bezier(0.6, 0, 0.9, 0.4), filter 0.23s;
}
.design_dark .tv_slide.is_on {
  opacity: 1;
}
.design_dark .tv_slide img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  object-fit: cover;
  transform: translateY(0);
  transition: top 6s linear, transform 6s linear;
  pointer-events: none;
}
.design_dark .tv_screen:hover .tv_slide.is_on img {
  top: 100%;
  transform: translateY(-100%);
}
.design_dark .tv_screen.is_off .tv_slide.is_on {
  transform: scale(1.04, 0.006);
  filter: brightness(3) saturate(0);
}
.design_dark .tv_noise {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  opacity: 0;
  image-rendering: pixelated;
  pointer-events: none;
  transition: opacity 0.12s;
}
.design_dark .tv_screen.is_noise .tv_noise {
  opacity: 0.55;
}
.design_dark .tv_osd {
  position: absolute;
  top: 14px;
  right: 18px;
  z-index: 4;
  color: #7dff9b;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(14px, 1.6vw, 20px);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-shadow: 0 0 8px rgba(125, 255, 155, 0.8), 2px 0 0 rgba(255, 80, 80, 0.5), -2px 0 0 rgba(80, 160, 255, 0.5);
  opacity: 0.35;
  transition: opacity 0.3s;
  pointer-events: none;
}
.design_dark .tv_screen.is_noise .tv_osd {
  opacity: 1;
}
.design_dark .tv_side {
  display: flex;
  flex-shrink: 0;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  width: 64px;
  padding: 10px 0;
}
@media (max-width: 640px) {
  .design_dark .tv_side {
    width: 40px;
    gap: 12px;
  }
}
.design_dark .tv_knob {
  position: relative;
  display: block;
  width: 52px;
  height: 52px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: repeating-conic-gradient(from 0deg, rgba(255, 255, 255, 0.07) 0 6deg, transparent 6deg 12deg), radial-gradient(circle at 35% 30%, #2a3d63, #0c1730 70%);
  box-shadow: 0 0 0 2px #050b18, 0 0 0 3px rgba(130, 175, 255, 0.18), 0 6px 14px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  transform: rotate(var(--knob, 0deg));
  transition: transform 0.6s cubic-bezier(0.3, 1.5, 0.5, 1);
}
.design_dark .tv_knob:hover {
  box-shadow: 0 0 0 2px #050b18, 0 0 0 3px rgba(140, 200, 255, 0.45), 0 0 18px rgba(90, 169, 255, 0.4);
}
@media (max-width: 640px) {
  .design_dark .tv_knob {
    width: 34px;
    height: 34px;
  }
}
.design_dark .tv_knob_mark {
  position: absolute;
  top: 6px;
  left: 50%;
  width: 4px;
  height: 12px;
  margin-left: -2px;
  border-radius: 2px;
  background: #ffa45c;
  box-shadow: 0 0 8px rgba(255, 164, 92, 0.8);
}
@media (max-width: 640px) {
  .design_dark .tv_knob_mark {
    top: 4px;
    height: 8px;
  }
}
.design_dark .tv_grill {
  display: block;
  width: 40px;
  height: 72px;
  background: radial-gradient(circle, rgba(130, 175, 255, 0.35) 1.4px, transparent 1.8px) 0 0/8px 8px;
}
@media (max-width: 640px) {
  .design_dark .tv_grill {
    width: 24px;
    height: 40px;
  }
}
.design_dark .tv_power {
  display: block;
  width: 8px;
  height: 8px;
  margin-top: auto;
  border-radius: 50%;
  background: #ff5a5a;
  box-shadow: 0 0 8px 2px rgba(255, 90, 90, 0.7);
  animation: tv_power 2.4s ease-in-out infinite;
}
@keyframes tv_power {
  50% {
    opacity: 0.45;
  }
}
.design_dark .tv_list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.design_dark .tv_ch {
  position: relative;
  display: block;
  width: 100%;
  padding: 16px 18px 16px 20px;
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 12px;
  background: rgba(12, 24, 46, 0.82);
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}
.design_dark .tv_ch::before {
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 0;
  width: 3px;
  border-radius: 2px;
  content: "";
  background: #5aa9ff;
  box-shadow: 0 0 10px #5aa9ff;
  transform: scaleY(0);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@media (hover: hover) {
  .design_dark .tv_ch:hover {
    border-color: rgba(140, 200, 255, 0.45);
    transform: translateX(4px);
  }
}
.design_dark .tv_ch[aria-pressed=true] {
  border-color: rgba(140, 200, 255, 0.45);
  background: rgba(20, 38, 70, 0.9);
}
.design_dark .tv_ch[aria-pressed=true]::before {
  transform: scaleY(1);
}
.design_dark .tv_ch[aria-pressed=true] .tv_ch_no {
  color: #7dff9b;
  text-shadow: 0 0 8px rgba(125, 255, 155, 0.6);
}
.design_dark .tv_ch_no {
  display: block;
  margin-bottom: 4px;
  color: #9db0cb;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
  transition: color 0.25s;
}
.design_dark .works_name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  color: #fff;
  font-size: clamp(17px, 1.6vw, 19px);
  font-weight: 700;
  line-height: 1.5;
}
.design_dark .works_tag {
  flex-shrink: 0;
  padding: 1px 10px;
  border: 1px solid rgba(255, 164, 92, 0.55);
  border-radius: 999px;
  color: #ffa45c;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.design_dark .works_text {
  display: block;
  margin-top: 6px;
  color: #9db0cb;
  font-size: 14px;
  line-height: 1.75;
}
.design_dark .works_note {
  margin-top: 16px;
  color: #9db0cb;
  font-size: 14px;
  text-align: center;
}
.design_dark {
  /* ---------- profile ---------- */
}
.design_dark .profile_body {
  margin-top: 32px;
  padding: 36px 40px;
}
@media (max-width: 640px) {
  .design_dark .profile_body {
    padding: 24px 20px;
  }
}
.design_dark .profile_name {
  color: #fff;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 900;
}
.design_dark .profile_shop {
  margin-left: 16px;
  color: #ffa45c;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}
.design_dark .profile_text {
  margin-top: 16px;
  color: #9db0cb;
  font-size: 16px;
}
.design_dark {
  /* ---------- menu：回路基板 ---------- */
}
.design_dark .graph_box {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 24px;
  margin-top: 40px;
}
@media (max-width: 900px) {
  .design_dark .graph_box {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media (max-width: 640px) {
  .design_dark .graph_box {
    display: none;
  }
}
.design_dark .graph_view {
  overflow: hidden;
}
.design_dark .graph_hint {
  position: absolute;
  top: 12px;
  left: 16px;
  color: #9db0cb;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
}
.design_dark .graph_svg {
  display: block;
  width: 100%;
  height: auto;
}
.design_dark .pcb_trace {
  fill: none;
  stroke: rgba(130, 175, 255, 0.22);
  stroke-width: 2;
  stroke-linejoin: round;
  transition: stroke 0.35s, stroke-width 0.35s;
}
.design_dark .pcb_trace.is_on {
  stroke: rgba(159, 212, 255, 0.7);
  stroke-width: 2.4;
}
.design_dark .pcb_spark {
  fill: #e6f6ff;
  filter: drop-shadow(0 0 4px #5aa9ff) drop-shadow(0 0 8px #5aa9ff);
}
.design_dark .pcb_spark.is_dim {
  fill: rgba(159, 212, 255, 0.55);
  filter: none;
}
.design_dark .pcb_pin {
  stroke: rgba(160, 190, 230, 0.45);
  stroke-width: 2;
}
.design_dark .pcb_core rect {
  fill: #0d1c38;
  stroke: #9fd4ff;
  stroke-width: 1.6;
  filter: drop-shadow(0 0 10px rgba(90, 169, 255, 0.35));
}
.design_dark .pcb_core text {
  fill: #fff;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 20px;
  font-weight: 900;
}
.design_dark .pcb_core .pcb_core_sub {
  fill: #9db0cb;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.06em;
}
.design_dark .pcb_notch {
  fill: rgba(159, 212, 255, 0.5);
}
.design_dark .pcb_mod {
  cursor: pointer;
  outline: none;
}
.design_dark .pcb_mod rect {
  fill: #0a1630;
  stroke: rgba(130, 175, 255, 0.4);
  stroke-width: 1.4;
  transition: fill 0.3s, stroke 0.3s;
}
.design_dark .pcb_mod text {
  fill: #e8eef9;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  pointer-events: none;
}
.design_dark .pcb_mod .pcb_led {
  fill: #1d2c48;
  transition: fill 0.3s;
}
.design_dark .pcb_mod.is_hover rect, .design_dark .pcb_mod:focus-visible rect {
  stroke: #9fd4ff;
}
.design_dark .pcb_mod[aria-pressed=true] rect {
  fill: #12315f;
  stroke: #9fd4ff;
}
.design_dark .pcb_mod[aria-pressed=true] .pcb_led {
  fill: #ffa45c;
  filter: drop-shadow(0 0 4px #ffa45c);
}
.design_dark .pcb_mod.is_charge rect {
  animation: pcb_charge 0.6s ease-out;
}
@keyframes pcb_charge {
  0% {
    fill: #2a6bc4;
  }
}
.design_dark .pcb_pad rect {
  fill: #142544;
  stroke: rgba(255, 164, 92, 0.6);
  stroke-width: 1.2;
  transition: fill 0.4s;
}
.design_dark .pcb_pad text {
  fill: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 11px;
}
.design_dark .pcb_pad.is_hit rect {
  fill: #ffa45c;
  filter: drop-shadow(0 0 6px #ffa45c);
  transition: none;
}
.design_dark .pcb_pad.is_hit text {
  fill: #fff;
}
.design_dark .graph_panel {
  align-self: center;
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.design_dark .graph_panel_tag {
  align-self: flex-start;
  padding: 2px 12px;
  border-radius: 999px;
  background: #ffa45c;
  color: #1d0e00;
  font-size: 12px;
  font-weight: 700;
}
.design_dark .graph_panel_tag[hidden] {
  display: none;
}
.design_dark .graph_panel_name {
  margin-top: 12px;
  color: #fff;
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 900;
  line-height: 1.4;
}
.design_dark .graph_panel_text {
  margin-top: 10px;
  color: #9db0cb;
  font-size: 15px;
}
.design_dark .graph_panel_spec {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.design_dark .graph_panel_row {
  padding: 10px 14px;
  border: 1px solid rgba(130, 175, 255, 0.18);
  border-radius: 10px;
}
.design_dark .graph_panel_row dt {
  color: #9db0cb;
  font-size: 12px;
}
.design_dark .graph_panel_row dd {
  color: #fff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 18px;
  font-weight: 500;
  white-space: nowrap;
}
.design_dark .menu_list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}
@media (max-width: 1024px) {
  .design_dark .menu_list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 640px) {
  .design_dark .menu_list {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 32px;
  }
}
.design_dark .menu_item {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: 12px;
}
.design_dark .menu_item_main {
  border-color: rgba(255, 164, 92, 0.5);
}
.design_dark .menu_tag {
  align-self: flex-start;
  margin-bottom: 8px;
  padding: 1px 10px;
  border-radius: 999px;
  background: #ffa45c;
  color: #1d0e00;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}
.design_dark .menu_name {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}
.design_dark .menu_text {
  margin-top: 6px;
  color: #9db0cb;
  font-size: 13px;
  line-height: 1.7;
}
.design_dark .menu_price {
  margin-top: auto;
  padding-top: 12px;
  color: #9fd4ff;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 18px;
  font-weight: 500;
}
.design_dark .menu_term {
  color: #9db0cb;
  font-size: 13px;
}
.design_dark .menu_note {
  margin-top: 20px;
  color: #9db0cb;
  font-size: 13px;
}
.design_dark {
  /* ---------- flow ---------- */
}
.design_dark .flow_head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.design_dark .flow_gear {
  flex-shrink: 0;
  width: 84px;
  height: 84px;
}
.design_dark .flow_gear rect,
.design_dark .flow_gear circle {
  fill: #10284f;
  stroke: #5aa9ff;
  stroke-width: 1.5;
}
.design_dark .flow_gear .flow_gear_hole {
  fill: #050b18;
}
@media (max-width: 640px) {
  .design_dark .flow_gear {
    width: 60px;
    height: 60px;
  }
}
.design_dark .flow_list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-top: 40px;
}
@media (max-width: 640px) {
  .design_dark .flow_list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}
.design_dark .flow_item {
  --fill: 0;
  position: relative;
  padding-right: 16px;
}
@media (max-width: 640px) {
  .design_dark .flow_item {
    padding: 0 0 28px 48px;
  }
}
.design_dark .flow_bar {
  display: block;
  height: 4px;
  border-radius: 999px;
  background: #16243f;
  overflow: hidden;
}
@media (max-width: 640px) {
  .design_dark .flow_bar {
    position: absolute;
    top: 38px;
    bottom: 6px;
    left: 15px;
    width: 3px;
    height: auto;
  }
}
.design_dark .flow_bar_fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, #5aa9ff, #9fd4ff);
  box-shadow: 0 0 12px #5aa9ff;
  transform: scaleX(var(--fill));
  transform-origin: left center;
}
@media (max-width: 640px) {
  .design_dark .flow_bar_fill {
    background: linear-gradient(to bottom, #5aa9ff, #9fd4ff);
    transform: scaleY(var(--fill));
    transform-origin: center top;
  }
}
.design_dark .flow_circle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  color: #9db0cb;
  font-size: clamp(17px, 1.7vw, 20px);
  font-weight: 700;
  white-space: nowrap;
  transition: color 0.4s;
}
@media (max-width: 640px) {
  .design_dark .flow_circle {
    min-height: 32px;
    margin-top: 0;
  }
}
.design_dark .flow_num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid #2a3d60;
  border-radius: 50%;
  background: #050b18;
  color: #9db0cb;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  transition: background 0.4s, color 0.4s, border-color 0.4s, box-shadow 0.4s;
}
@media (max-width: 640px) {
  .design_dark .flow_num {
    position: absolute;
    left: 0;
    top: 0;
  }
}
.design_dark .flow_item.is_on .flow_circle {
  color: #fff;
}
.design_dark .flow_item.is_on .flow_num {
  border-color: #9fd4ff;
  background: #5aa9ff;
  color: #04101f;
  box-shadow: 0 0 16px #5aa9ff;
}
.design_dark .flow_text {
  margin-top: 10px;
  color: #9db0cb;
  font-size: 14px;
}
@media (max-width: 640px) {
  .design_dark .flow_text {
    margin-top: 4px;
  }
}
.design_dark {
  /* ---------- contact ---------- */
}
.design_dark .contact_area {
  padding-bottom: 120px;
}
@media (max-width: 640px) {
  .design_dark .contact_area {
    padding-bottom: 80px;
  }
}
.design_dark .contact_box {
  padding: 56px 48px;
  text-align: center;
  border-color: rgba(140, 200, 255, 0.45);
  box-shadow: 0 0 0 1px rgba(90, 169, 255, 0.08), 0 0 80px rgba(90, 169, 255, 0.15);
}
@media (max-width: 640px) {
  .design_dark .contact_box {
    padding: 36px 20px;
  }
}
.design_dark .contact_title {
  color: #fff;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  line-height: 1.45;
}
.design_dark .contact_text {
  margin-top: 12px;
  color: #9db0cb;
}
.design_dark .contact_btn {
  margin-top: 28px;
}
.design_dark .contact_terms {
  max-width: 640px;
  margin: 32px auto 0;
  text-align: left;
}
.design_dark .contact_terms li {
  position: relative;
  padding-left: 20px;
  color: #9db0cb;
  font-size: 14px;
}
.design_dark .contact_terms li::before {
  content: "";
  position: absolute;
  top: 0.8em;
  left: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5aa9ff;
}
.design_dark .contact_terms li + li {
  margin-top: 6px;
}
.design_dark .contact_mail {
  margin-top: 24px;
  font-size: 15px;
}
.design_dark .ai_note {
  margin-top: 12px;
  color: #9db0cb;
  font-size: 13px;
}
.design_dark {
  /* ---------- footer ---------- */
}
.design_dark .footer_area {
  padding: 24px 0;
  border-top: 1px solid rgba(130, 175, 255, 0.18);
  color: #9db0cb;
  font-size: 13px;
  text-align: center;
}

/* ---------- keyframes（名前は dk_ で始める） ---------- */
@keyframes dk_caret_blink {
  50% {
    opacity: 0;
  }
}
@keyframes dk_log_in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}
@property --app_ang {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}
.design_dark .works_app {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 520px;
  margin: 28px auto 0;
  padding: 18px 24px;
  border-radius: 14px;
  background: rgba(12, 24, 46, 0.82);
  color: #e8eef9;
  text-decoration: none;
  isolation: isolate;
}
.design_dark .works_app::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  padding: 1.5px;
  border-radius: inherit;
  content: "";
  background: conic-gradient(from var(--app_ang), transparent 0 70%, #5aa9ff 82%, #9fd4ff 88%, transparent 96%), rgba(130, 175, 255, 0.18);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  animation: dk_app_run 3.2s linear infinite;
}
.design_dark .works_app:hover {
  box-shadow: 0 0 30px rgba(90, 169, 255, 0.3);
}
.design_dark .works_app:hover::before {
  animation-duration: 1.1s;
}
.design_dark .works_app:hover .works_app_arrow {
  transform: translateX(6px);
}
.design_dark .works_app_body {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
}
.design_dark .works_app_label {
  color: #ffa45c;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
}
.design_dark .works_app_name {
  font-size: 16px;
  font-weight: 700;
}
.design_dark .works_app_arrow {
  flex-shrink: 0;
  color: #9fd4ff;
  font-size: 20px;
  transition: transform 0.3s;
}

@keyframes dk_app_run {
  to {
    --app_ang: 360deg;
  }
}
.design_dark .tv_col {
  min-width: 0;
}
.design_dark .works_go {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 16px;
  border: 1px solid rgba(125, 255, 155, 0.25);
  border-radius: 10px;
  background: rgba(2, 10, 6, 0.6);
  color: #7dff9b;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  text-decoration: none;
  text-shadow: 0 0 6px rgba(125, 255, 155, 0.5);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.design_dark .works_go.is_none {
  display: none;
}
.design_dark .works_go:hover {
  border-color: rgba(125, 255, 155, 0.7);
  box-shadow: 0 0 22px rgba(125, 255, 155, 0.18);
}
.design_dark .works_go_prompt {
  flex-shrink: 0;
  color: #ffa45c;
}
.design_dark .works_go_name {
  min-width: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-weight: 700;
}
.design_dark .works_go_kind {
  flex-shrink: 0;
  margin-left: auto;
  padding: 1px 8px;
  border: 1px solid rgba(125, 255, 155, 0.4);
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
}
.design_dark .works_go_caret {
  flex-shrink: 0;
  width: 9px;
  height: 16px;
  background: #7dff9b;
  animation: dk_caret 1s steps(2, jump-none) infinite;
}

@keyframes dk_caret {
  50% {
    opacity: 0;
  }
}
.design_dark .sec_title,
.design_dark .contact_title,
.design_dark .case_name,
.design_dark .hero_title {
  word-break: auto-phrase;
  text-wrap: balance;
}
.design_dark .hero_proof li {
  word-break: auto-phrase;
}
.design_dark .header_nav a {
  display: inline-block;
  padding: 8px 4px;
}
.design_dark {
  /* ---------- 守っていること：端末で点検コマンドを打つと、1行ずつ [ ON ] が返ってくる ---------- */
}
.design_dark .guard_term {
  margin-top: 40px;
  padding: 0 0 22px;
  overflow: hidden;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.design_dark .guard_term::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(to bottom, transparent 0, rgba(159, 212, 255, 0.06) 50%, transparent 100%);
  background-size: 100% 120px;
  background-repeat: no-repeat;
  animation: guard_scan 4.5s linear infinite;
}
@keyframes guard_scan {
  from {
    background-position: 0 -120px;
  }
  to {
    background-position: 0 calc(100% + 120px);
  }
}
.design_dark .guard_term_bar {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 18px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(130, 175, 255, 0.18);
  color: #9db0cb;
  font-size: 12px;
}
.design_dark .guard_term_bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(159, 212, 255, 0.25);
}
.design_dark .guard_term_bar b {
  margin-left: 10px;
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.design_dark .guard_term_cmd {
  min-height: 1.85em;
  margin: 0 0 10px;
  padding: 0 22px;
  color: #e8eef9;
  font-size: 15px;
}
@media (max-width: 640px) {
  .design_dark .guard_term_cmd {
    padding: 0 16px;
    font-size: 13px;
  }
}
.design_dark .guard_prompt {
  color: #ffa45c;
}
.design_dark .guard_caret {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  margin-left: 2px;
  vertical-align: -0.18em;
  background: #9fd4ff;
  animation: guard_blink 1s steps(1) infinite;
}
@keyframes guard_blink {
  50% {
    opacity: 0;
  }
}
.design_dark .guard_term_list {
  margin: 0;
  padding: 0 22px;
  list-style: none;
}
@media (max-width: 640px) {
  .design_dark .guard_term_list {
    padding: 0 16px;
  }
}
.design_dark .guard_line {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-top: 1px dashed rgba(130, 175, 255, 0.14);
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.35s, transform 0.35s;
}
.design_dark .guard_line.is_on {
  opacity: 1;
  transform: none;
}
@media (max-width: 640px) {
  .design_dark .guard_line {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}
.design_dark .guard_ok {
  color: #5ee6a8;
  font-size: 14px;
  white-space: nowrap;
  text-shadow: 0 0 12px rgba(94, 230, 168, 0.6);
}
.guard_line.is_on .design_dark .guard_ok {
  animation: guard_flash 0.6s;
}
@keyframes guard_flash {
  0%, 40% {
    color: #fff;
    text-shadow: 0 0 22px rgba(255, 255, 255, 0.9);
  }
}
.design_dark .guard_line_body {
  color: #9db0cb;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 15px;
}
.design_dark .guard_line_body b {
  display: block;
  color: #fff;
  font-size: 16px;
}
.design_dark .guard_term_sum {
  margin: 14px 22px 0;
  color: #5ee6a8;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.4s;
}
.design_dark .guard_term_sum.is_on {
  opacity: 1;
}
@media (max-width: 640px) {
  .design_dark .guard_term_sum {
    margin: 14px 16px 0;
  }
}
.design_dark .guard_more {
  margin-top: 32px;
}