/* 中山式相続不動産アカデミー 共通デザイン（C 伝統型：藍×生成り×明朝） */
:root{
  --ai:#162B60;        /* 藍：メイン */
  --ai-deep:#0E1C40;
  --kinari:#F6F2EA;    /* 生成り：地 */
  --kinari-2:#ECE5D8;
  --sumi:#1F1F1F;      /* 墨：本文 */
  --sumi-soft:#55524C;
  --shu:#B5482E;       /* 朱：差し色 */
  --line:#06C755;      /* LINEボタン */
  --line-deep:#05A647;
  --rule:rgba(22,43,96,.18);
  --f-min:"Zen Old Mincho","Shippori Mincho",serif;
  --f-got:"Zen Kaku Gothic New",system-ui,sans-serif;
  --f-en:"Space Grotesk",sans-serif;
  --w:1080px;
}
*,*::before,*::after{box-sizing:border-box}
html{word-break:auto-phrase;line-break:strict;overflow-wrap:break-word;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background-color:var(--kinari);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .35  0 0 0 0 .27  0 0 0 0 .17  0 0 0 .09 0'/></filter><rect width='100%' height='100%' filter='url(%23g)'/></svg>"),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='520' height='520'><filter id='f'><feTurbulence type='fractalNoise' baseFrequency='.03 .22' numOctaves='3' seed='7' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .45  0 0 0 0 .36  0 0 0 0 .24  0 0 0 .32 -.13'/></filter><rect width='100%' height='100%' filter='url(%23f)'/></svg>");background-size:260px 260px,520px 520px;color:var(--sumi);font-family:var(--f-got);font-size:16px;line-height:1.9;letter-spacing:.03em}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-min);font-weight:700;line-height:1.5;letter-spacing:.06em;margin:0;text-wrap:pretty}
p{margin:0 0 1em;text-wrap:pretty}
.zp{white-space:nowrap}
.l-wrap{width:min(100% - 32px,var(--w));margin-inline:auto}
.u-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ヘッダー */
.c-header{position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:rgba(246,242,234,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule);transform:translateY(-100%);transition:transform .4s ease}
.c-header.is-show{transform:none}
.c-logo{display:flex;flex-direction:column;text-decoration:none;color:var(--ai);font-family:var(--f-min);line-height:1.2}
.c-logo__sub{font-size:10px;letter-spacing:.2em}
.c-logo__main{font-size:17px;font-weight:700;letter-spacing:.1em}
.c-logo__main b{color:var(--shu);font-weight:700}

/* LINEボタン */
.c-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:14px 28px;border-radius:999px;background:var(--line);color:#fff;font-weight:700;font-size:17px;letter-spacing:.06em;text-decoration:none;box-shadow:0 6px 0 var(--line-deep);transition:transform .15s,box-shadow .15s}
.c-btn:hover{transform:translateY(2px);box-shadow:0 4px 0 var(--line-deep)}
.c-btn:active{transform:translateY(6px);box-shadow:0 0 0 var(--line-deep)}
.c-btn__ico{width:26px;height:26px;flex:none}
.c-btn--s{white-space:nowrap;min-height:40px;padding:8px 16px;font-size:13px;box-shadow:0 3px 0 var(--line-deep)}
.c-btn--s .c-btn__ico{width:18px;height:18px}
.c-cta-note{display:block;margin-top:12px;font-size:13px;color:var(--sumi-soft);letter-spacing:.08em}

/* セクション共通 */
.c-sec{padding:88px 0}
.c-sec--ai{background:var(--ai);color:var(--kinari)}
.c-sec--k2{background-color:var(--kinari-2);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .35  0 0 0 0 .27  0 0 0 0 .17  0 0 0 .09 0'/></filter><rect width='100%' height='100%' filter='url(%23g)'/></svg>"),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='520' height='520'><filter id='f'><feTurbulence type='fractalNoise' baseFrequency='.03 .22' numOctaves='3' seed='7' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .45  0 0 0 0 .36  0 0 0 0 .24  0 0 0 .32 -.13'/></filter><rect width='100%' height='100%' filter='url(%23f)'/></svg>");background-size:260px 260px,520px 520px}
.c-eyebrow{display:block;font-family:var(--f-en);font-size:12px;letter-spacing:.3em;color:var(--shu);margin-bottom:14px}
.c-sec--ai .c-eyebrow{color:#E9A48F}
.c-h2{font-size:clamp(26px,6.4vw,40px);margin-bottom:32px}
.c-h2 em{font-style:normal;color:var(--shu)}
.c-sec--ai .c-h2 em{color:#F2B9A6}
.c-lead{font-size:17px}

/* フッター */
.c-footer{background:var(--ai-deep);color:#C9CEDC;padding:48px 0 96px;font-size:13px}
.c-footer .c-logo{color:#fff;margin-bottom:16px}
.c-footer__nav{display:flex;flex-wrap:wrap;gap:8px 24px;margin:16px 0;padding:0;list-style:none}
.c-footer__nav a{color:#fff}
.c-footer small{display:block;margin-top:24px;opacity:.7}

/* 下層ページ */
.c-page{padding:120px 0 80px}
.c-page h1{font-size:clamp(26px,6vw,36px);color:var(--ai);margin-bottom:32px;padding-bottom:16px;border-bottom:2px solid var(--ai)}
.c-page h2{font-size:20px;color:var(--ai);margin:40px 0 12px}
.c-table{width:100%;border-collapse:collapse;font-size:15px}
.c-table th,.c-table td{padding:16px 12px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
.c-table th{width:30%;color:var(--ai);font-weight:700;white-space:nowrap}
.c-page .c-header{transform:none}

@media (max-width:600px){
  .c-logo__sub{display:none}
  .c-logo__main{font-size:14px;white-space:nowrap;letter-spacing:.04em}
  .c-header{padding:8px 12px;gap:8px}
  .c-btn--s{padding:8px 12px;font-size:12px;gap:6px}
  .c-sec{padding:64px 0}
  .c-table th{width:auto;display:block;padding-bottom:0;border:0}
  .c-table td{display:block;padding-top:4px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01s!important;animation-duration:.01s!important}
}

/* ===== LINE追加ボタン（2026-10-06 刷新） ===== */
.c-line-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;max-width:440px}
.c-line-badge{font-family:var(--f-min);font-weight:700;font-size:15px;letter-spacing:.08em;color:var(--shu)}
.c-sec--ai .c-line-badge,.c-fv .c-line-badge{color:#F2B9A6}
.c-line{position:relative;display:flex;align-items:center;gap:12px;width:100%;padding:14px 38px 14px 12px;border-radius:14px;background:linear-gradient(180deg,#1FD46A 0%,#06C755 55%,#05B04B 100%);color:#fff;text-decoration:none;box-shadow:0 6px 0 #04893A,0 14px 28px rgba(6,199,85,.35);overflow:hidden;transition:transform .15s,box-shadow .15s;animation:c-line-pulse 2.4s ease-in-out infinite}
.c-line::before{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);transform:skewX(-20deg);animation:c-line-shine 3.2s ease-in-out infinite}
.c-line:hover{transform:translateY(2px);box-shadow:0 4px 0 #04893A,0 10px 22px rgba(6,199,85,.35)}
.c-line:active{transform:translateY(6px);box-shadow:0 0 0 #04893A}
.c-line__ico{flex:none;display:grid;place-items:center;width:52px;height:52px;border-radius:12px;background:#fff;color:#06C755}
.c-line__ico svg{width:36px;height:36px}
.c-line__txt{display:flex;flex-direction:column;line-height:1.35;font-weight:700;font-size:clamp(16px,4.3vw,21px);letter-spacing:.02em;white-space:nowrap;text-shadow:0 1px 0 rgba(0,0,0,.12)}
.c-line__txt small{display:inline-block;align-self:flex-start;margin-bottom:4px;padding:1px 8px;border-radius:999px;background:rgba(255,255,255,.95);color:#04893A;font-size:11px;letter-spacing:.06em;text-shadow:none}
.c-line__arw{position:absolute;right:16px;top:50%;width:12px;height:12px;border-top:3px solid #fff;border-right:3px solid #fff;transform:translateY(-50%) rotate(45deg)}
.c-line-legal{margin:4px 0 0;padding:0;list-style:none;font-size:11px;line-height:1.7;color:var(--sumi-soft);text-align:left;align-self:stretch}
.c-sec--ai .c-line-legal,.c-fv .c-line-legal{color:rgba(255,255,255,.7)}
.c-line--sticky{padding:8px 40px 8px 8px;border-radius:12px;animation:none;box-shadow:0 4px 0 #04893A}
.c-line--sticky .c-line__ico{width:40px;height:40px;border-radius:10px}
.c-line--sticky .c-line__ico svg{width:28px;height:28px}
.c-line--sticky .c-line__txt{font-size:16px}
.c-line--sticky .c-line__txt small{display:none}
@keyframes c-line-shine{0%,55%{left:-60%}100%{left:130%}}
@keyframes c-line-pulse{0%,100%{transform:none}50%{transform:scale(1.025)}}
@media (prefers-reduced-motion:reduce){.c-line,.c-line::before{animation:none}}