/* アップデート記事のスタイル。末尾の @media がスマートフォン用です。 */

:root {
  --ink: var(--theme-ink);
  --teal: var(--theme-dark);
  --mint: var(--theme-soft);
  --orange: #e77540;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
}
body {
  margin: 0;
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "Noto Sans JP",
    "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: #fcfcf7;
  line-height: 1.85;
}
a {
  color: inherit;
}
button,
a {
  touch-action: manipulation;
}
header {
  height: 76px;
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--theme-border);
  background: #fcfcf7;
  position: sticky;
  top: 0;
  z-index: 5;
}
header b {
  font-size: 18px;
}
nav {
  display: flex;
  gap: 28px;
  font-size: 13px;
}
nav a {
  text-decoration: none;
}
.wrap {
  max-width: 1200px;
  margin: auto;
  padding: 0 32px;
}
.hero {
  padding: 72px 0 0;
  overflow: hidden;
  background: radial-gradient(
    ellipse at 90% 0,
    var(--theme-soft-strong),
    transparent 60%
  );
}
.eyebrow {
  font-weight: 700;
  letter-spacing: 0.15em;
  font-size: 12px;
  color: var(--teal);
}
.date {
  display: inline-flex;
  gap: 18px;
  align-items: center;
  border: 1px solid var(--theme-accent);
  border-radius: 30px;
  padding: 5px 18px;
  font-size: 14px;
  background: #fff9;
}
h1 {
  font-size: clamp(40px, 5.4vw, 72px);
  letter-spacing: -0.045em;
  line-height: 1.38;
  margin: 26px 0;
}
h1 em {
  font-style: normal;
  color: var(--teal);
}
.intro {
  font-size: 17px;
  max-width: 670px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  padding: 14px 27px;
  border-radius: 7px;
  background: var(--teal);
  color: white;
  text-decoration: none;
  border: 0;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.btn.light {
  background: #fff;
  color: var(--ink);
}
.hero .btn {
  margin: 16px 0 35px;
}
.screen {
  background: white;
  border: 1px solid var(--theme-border);
  border-radius: 14px;
  box-shadow: 0 18px 50px #193d4010;
  overflow: hidden;
}
.bar {
  padding: 10px 18px;
  font-size: 11px;
  background: #f1f5f2;
  color: var(--theme-muted);
  letter-spacing: 0.08em;
}
.screen img {
  width: 100%;
  display: block;
}
.hero .screen {
  margin: 5px 0 -45px;
  max-height: 390px;
}
.hero-bottom {
  height: 90px;
}
.campaign {
  background: var(--ink);
  color: white;
  padding: 35px 0;
}
.campaign .wrap {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: space-between;
}
.campaign h2 {
  font-size: 26px;
  margin: 3px 0;
}
.campaign p {
  margin: 0;
  color: var(--theme-border);
  font-size: 14px;
}
.gold {
  color: #f9d998;
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 700;
}
section.feature {
  padding: 95px 0;
  border-bottom: 1px solid #dce4dd;
}
.section-head {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  margin-bottom: 35px;
}
.num {
  font-size: 46px;
  color: var(--theme-accent);
  line-height: 1.3;
}
h2 {
  font-size: clamp(27px, 3.2vw, 42px);
  letter-spacing: -0.025em;
  line-height: 1.5;
  margin: 8px 0 15px;
}
p {
  margin: 12px 0;
}
.description {
  max-width: 750px;
  color: var(--theme-muted);
}
.points {
  display: flex;
  gap: 14px;
  margin: 25px 0;
  flex-wrap: wrap;
}
.points span {
  padding: 7px 17px;
  background: var(--mint);
  border-radius: 5px;
  font-size: 14px;
  font-weight: 700;
}
.caption {
  font-size: 12px;
  color: #697a73;
  margin-top: 13px;
}
.tabs {
  display: flex;
  gap: 8px;
  margin: 26px 0 16px;
}
.tabs button {
  background: white;
  border: 1px solid var(--theme-accent);
  border-radius: 30px;
  padding: 10px 23px;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}
.tabs button[aria-selected="true"] {
  background: var(--teal);
  color: white;
  border-color: var(--teal);
}
.silver {
  padding: 80px 0;
  background: var(--mint);
}
.silver-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: center;
}
.time {
  background: white;
  border-radius: 12px;
  padding: 28px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: space-around;
}
.time strong {
  font-size: 50px;
  line-height: 1.2;
}
.time small {
  display: block;
  font-size: 12px;
}
.time .old {
  color: #81938b;
}
.time .new {
  color: var(--teal);
}
.coupon {
  padding: 90px 0;
  text-align: center;
  background: #f8f1df;
}
.coupon h2 {
  font-size: clamp(30px, 4vw, 48px);
}
.coupon-box {
  max-width: 620px;
  margin: 30px auto;
  background: #fff;
  border: 1px solid #ddce9f;
  border-radius: 12px;
  padding: 28px;
}
.code {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-bottom: 1px dashed #d4c99e;
  padding: 12px 0 22px;
  margin-bottom: 22px;
}
.coupon-box small {
  display: block;
  color: #786c52;
  margin-top: 14px;
}
.faq {
  padding: 70px 0;
  max-width: 850px;
  margin: auto;
}
details {
  border-bottom: 1px solid #d6dfd8;
  padding: 20px 0;
}
summary {
  font-weight: 700;
  cursor: pointer;
}
details p {
  color: var(--theme-muted);
  font-size: 14px;
}
.closing {
  text-align: center;
  padding: 65px 24px;
  background: var(--teal);
  color: white;
}
.closing h2 {
  margin-bottom: 25px;
}
footer {
  padding: 28px 5%;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  color: #697a73;
}
.notice {
  padding: 12px 22px;
  background: #fff3df;
  border-bottom: 1px solid #e5d6bc;
  font-size: 12px;
  text-align: center;
}
.url-slot {
  display: inline-block;
  border: 1px dashed currentColor;
  border-radius: 7px;
  padding: 12px 22px;
  font-size: 14px;
}
.status {
  font-size: 12px;
  min-height: 20px;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid #ed974c;
  outline-offset: 4px;
}
@media (max-width: 700px) {
  header {
    height: 64px;
  }
  header b {
    font-size: 14px;
  }
  nav a {
    display: none;
  }
  nav a:last-child {
    display: block;
    font-size: 11px;
  }
  .wrap {
    padding: 0 20px;
  }
  .hero {
    padding-top: 40px;
  }
  h1 {
    font-size: 41px;
  }
  .intro {
    font-size: 15px;
  }
  .hero .screen {
    max-height: 230px;
  }
  .campaign .wrap {
    display: block;
  }
  .campaign h2 {
    font-size: 23px;
  }
  .campaign .btn {
    margin-top: 18px;
  }
  section.feature {
    padding: 60px 0;
  }
  .section-head {
    grid-template-columns: 40px 1fr;
    gap: 10px;
  }
  .num {
    font-size: 30px;
  }
  h2 {
    font-size: 27px;
  }
  .points {
    gap: 8px;
  }
  .points span {
    font-size: 12px;
    padding: 6px 10px;
  }
  .silver-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .silver {
    padding: 55px 0;
  }
  .coupon {
    padding: 55px 0;
  }
  .tabs button {
    font-size: 13px;
    padding: 9px 15px;
  }
  .screen {
    overflow: auto;
  }
  .feature .screen img {
    min-width: 740px;
  }
  .caption {
    font-size: 11px;
  }
  .faq {
    padding: 50px 20px;
  }
  footer {
    display: block;
  }
  .date {
    font-size: 12px;
  }
}
.hero .wrap {
  position: relative;
}
.hero h1 {
  font-size: clamp(36px, 4.2vw, 59px);
  max-width: 790px;
}
.hero .intro {
  max-width: 620px;
}
.detail-art {
  position: absolute;
  right: -10px;
  top: -72px;
  width: 40%;
  height: 570px;
  z-index: 0;
  opacity: 0.9;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 24%);
  pointer-events: none;
}
.detail-art img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero .date,
.hero h1,
.hero .intro,
.hero .btn {
  position: relative;
  z-index: 1;
}
.hero .screen {
  z-index: 2;
}
.hero {
  background: var(--theme-soft);
}
:root {
  --teal: var(--theme-primary);
  --ink: var(--theme-dark);
  --mint: var(--theme-soft);
}
body {
  background: var(--theme-page);
}
.hero h1 em {
  color: var(--theme-primary);
}
@media (max-width: 900px) {
  .detail-art {
    position: relative;
    top: 0;
    right: auto;
    width: 100%;
    height: 310px;
    opacity: 1;
    mask-image: none;
    margin-bottom: 25px;
    border-radius: 10px;
  }
  .hero h1 {
    font-size: 39px;
  }
  .hero .intro {
    max-width: 100%;
  }
}
.coupon-guide {
  max-width: 1000px;
  margin: 50px auto 0;
  text-align: left;
}
.coupon-guide h3 {
  font-size: 26px;
}
.coupon-guide ol {
  padding-left: 26px;
}
.coupon-guide li {
  padding: 12px 0 25px;
}
.coupon-guide li p {
  font-size: 14px;
}
.coupon-guide img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #ded8c8;
  border-radius: 8px;
  margin: 15px 0;
}
.coupon-guide .btn {
  color: white;
}
[hidden] {
  display: none !important;
}

/* フィードバック反映：意味のあるまとまりで改行し、1文字の折り返しを防ぎます。 */
h1,
h2,
h3,
p {
  text-wrap: pretty;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
.copy-line {
  display: block;
}
.hero h1 .copy-line {
  white-space: nowrap;
  font-size: 0.75em;
}
.hero .intro {
  max-width: 800px;
}
.hero .intro .copy-line {
  white-space: nowrap;
  font-size: clamp(12px, 1.4vw, 17px);
}
.prep-line {
  white-space: nowrap;
  font-size: clamp(16px, 1.7vw, 25px);
}
.feedback {
  padding: 65px 0;
  text-align: center;
  background: var(--theme-soft);
}
.feedback h2 {
  font-size: clamp(22px, 3vw, 33px);
}
.feedback p {
  font-size: 14px;
}
.feedback .btn {
  margin-top: 18px;
}
#survey-pending {
  color: var(--theme-muted);
}
.guide-link {
  margin-top: 35px;
}
.guide-page {
  padding-top: 50px;
  padding-bottom: 65px;
}
.guide-page .coupon-guide {
  margin-top: 0;
}
.guide-page h1 {
  font-size: clamp(26px, 4vw, 40px);
}
@media (max-width: 700px) {
  .hero h1 {
    font-size: clamp(26px, 7.4vw, 39px);
  }
  .hero .intro .copy-line {
    font-size: clamp(11px, 3.2vw, 15px);
  }
  .feedback {
    padding: 45px 20px;
  }
  .campaign .wrap {
    display: block;
  }
  .campaign .btn {
    margin-top: 20px;
  }
}

.campaign h2 {
  font-size: clamp(21px, 2.2vw, 28px);
}

/* キャンペーンの主導線を強調 */
.coupon-box .coupon-action {
  display: flex;
  width: 320px;
  max-width: 100%;
  min-height: 58px;
  margin: 18px auto 0;
  padding: 16px 28px;
  align-items: center;
  justify-content: center;
  background: var(--theme-primary);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 5px 14px rgba(0,0,0,0.14);
}
.coupon-box .coupon-action:hover { filter: brightness(0.93); }