/* ============================================================
   読み物ページ（規約・ご利用ガイド）の共通スタイル（英語版・新デザイン）
   base.css のトークンを使用。タブは radio ボタン方式のまま（JSなしで動く）
   ============================================================ */
.doc { width: min(960px, 100% - 40px); margin: 0 auto; padding: 44px 0 72px; color: var(--ink); }
.doc h1 { margin: 0 0 28px; text-align: center; font-family: var(--serif); font-weight: 700; font-size: clamp(26px, 6vw, 36px); line-height: 1.45; letter-spacing: .03em; }
#h1_under { display: block; margin-top: 6px; font-family: var(--sans); font-weight: 500; font-size: clamp(15px, 3.6vw, 19px); color: var(--steel); letter-spacing: .04em; }

/* タブ */
input[type="radio"][name="tab_btn"] { position: absolute; opacity: 0; pointer-events: none; }
.tab_area { display: flex; flex-wrap: wrap; gap: 0 4px; border-bottom: 1px solid var(--paper-line); }
.tab_area label {
  display: block; padding: 12px 20px 10px; cursor: pointer;
  font-size: 14.5px; font-weight: 700; line-height: 1.5; text-align: center; color: var(--steel);
  border-bottom: 3px solid transparent; margin-bottom: -1px;
}
.tab_area label:hover { color: var(--ink); }
input[type="radio"][name="tab_btn"]:focus-visible ~ .tab_area label { outline: 0; }
.panel_area { background: #fff; border: 1px solid var(--paper-line); border-top: 0; }
.tab_panel { display: none; padding: 34px 34px 40px; font-size: 15.5px; line-height: 1.95; }
#tab0:checked ~ .tab_area #tab0_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab0:checked ~ .panel_area #panel0 { display: block; }
#tab1:checked ~ .tab_area #tab1_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab1:checked ~ .panel_area #panel1 { display: block; }
#tab2:checked ~ .tab_area #tab2_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab2:checked ~ .panel_area #panel2 { display: block; }
#tab3:checked ~ .tab_area #tab3_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab3:checked ~ .panel_area #panel3 { display: block; }
#tab4:checked ~ .tab_area #tab4_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab4:checked ~ .panel_area #panel4 { display: block; }
#tab5:checked ~ .tab_area #tab5_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab5:checked ~ .panel_area #panel5 { display: block; }
#tab6:checked ~ .tab_area #tab6_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab6:checked ~ .panel_area #panel6 { display: block; }
#tab7:checked ~ .tab_area #tab7_label { color: var(--blueprint); border-bottom-color: var(--correction); }
#tab7:checked ~ .panel_area #panel7 { display: block; }

/* 本文 */
.tab_panel h2, .tab_panel h3 { font-family: var(--sans); line-height: 1.6; color: var(--ink); text-wrap: balance; }
.tab_panel h2 { margin: 0 0 22px; font-size: clamp(19px, 4.4vw, 23px); text-align: center; }
.tab_panel h3 { margin: 28px 0 8px; font-size: 16.5px; }
.tab_panel p { margin: 0 0 12px; }
.tab_panel ol { margin: 0 0 14px; padding-left: 0; list-style: none; }
.tab_panel ol li { padding-left: 1.5em; text-indent: -1.5em; margin-bottom: 4px; }
.tab_panel ul { margin: 6px 0 14px; padding-left: 1.4em; }
.tab_panel a { color: var(--blueprint); }
.tab_panel img { max-width: 100%; height: auto; }
.heading { margin: 0 0 2rem; }
.notice { margin-top: .5em; }
.payment { margin: 0 0 1rem; }
.indent { display: inline-block; text-indent: 1em; }
.oblique { font-style: oblique; margin: 1rem 0 0; }
.sec_sec { padding: 0; }
.small { font-size: 14.5px; }
.bold { font-weight: 700; }
.red { color: var(--correction); }
.blue { color: var(--blueprint); }
.center { text-align: center; }
.width100 { display: block; width: 100%; }
.disp_none { display: none; }
.underline { text-decoration: underline; cursor: pointer; }
#java { margin: 0 0 18px; text-align: center; }
#java small { color: var(--correction); font-weight: 700; font-size: 14px; }

/* ガイド：図・測定 */
#usage_wrapper { overflow-x: auto; margin: 0 0 14px; }
#usage { margin: 0; min-width: 640px; }
#usage img { width: 100%; height: auto; border: 1px solid var(--paper-line); }
#measurement_wrapper { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
#measurement_wrapper figure { width: 300px; max-width: 100%; margin: 0; }
.TCs_download { display: block; width: min(300px, 100%); margin: 20px auto; padding: 12px 18px; background: var(--correction); color: #fff !important; border-radius: 4px; font-weight: 700; text-align: center; text-decoration: none; }
.TCs_download:hover { background: var(--correction-deep); }
.sig_description { margin: 0 auto; }
.qa { max-width: 520px; margin: 0 auto 1em; }

/* 規約：確認ダイアログ */
#dialog { position: absolute; top: 50px; left: 50%; transform: translateX(-50%); width: min(550px, 90%); padding: 20px; background: #fff; text-align: center; z-index: 2; visibility: hidden; }
#dialog_buttons { width: 100%; display: flex; justify-content: center; }
.buttons { margin: 20px 10px 0; padding: 6px 14px; border-radius: 4px; font-weight: 700; color: #fff; }
#back { background: var(--blueprint); } #OK { background: var(--correction); }
#fadeLayer { position: absolute; top: 0; left: 0; width: 100%; min-height: 100%; background: #000; opacity: .5; visibility: hidden; z-index: 1; }

@media screen and (max-width: 460px) {
  .doc { padding: 32px 0 56px; }
  .tab_area label { flex: 1 1 auto; padding: 10px 8px 8px; font-size: 13px; }
  .tab_panel { padding: 24px 16px 30px; font-size: 15px; }
}