@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700;900&family=Roboto:wght@700;900&display=swap");

/* ===========================
   Reset & Base
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 62.5%; scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "メイリオ", sans-serif;
  font-size: 1.5rem;
  line-height: 1.8;
  color: #333;
  background: #fff;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

:root {
  --blue:      #13448f;
  --blue-dark: #0c2d5e;
  --blue-light:#e8f0fa;
  --navy:      #0a1f3d;
  --orange:    #e85d00;
  --gray-bg:   #f5f7fa;
  --white:     #fff;
  --shadow:    0 2px 12px rgba(0,0,0,.10);
}

.sv-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 64px 20px;
}

/* ===========================
   共通ボタン
=========================== */
.sv-btn {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 700;
  padding: 16px 40px;
  border-radius: 6px;
  transition: all .2s;
  cursor: pointer;
}

.sv-btn--primary {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 4px 12px rgba(232,93,0,.35);
}

.sv-btn--primary:hover { background: #c94d00; transform: translateY(-2px); }

.sv-btn--outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.7);
}

.sv-btn--outline:hover { background: rgba(255,255,255,.15); }

.sv-btn--cta {
  background: var(--orange);
  color: #fff;
  font-size: 2rem;
  padding: 20px 60px;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(232,93,0,.4);
}

.sv-btn--cta:hover { background: #c94d00; transform: translateY(-3px); }

/* ===========================
   共通セクションタイトル
=========================== */
.sv-section-title {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 900;
  color: var(--blue-dark);
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 16px;
}

.sv-section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--blue);
  margin: 12px auto 0;
}

.sv-section-title--white { color: #fff; }
.sv-section-title--white::after { background: rgba(255,255,255,.6); }

/* ===========================
   HEADER
=========================== */
.sv-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blue-dark);
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.sv-header__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sv-header__logo { height: 40px; width: auto; }

.sv-header__cta {
  background: var(--orange);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 4px;
  transition: background .2s;
}

.sv-header__cta:hover { background: #c94d00; }

/* ===========================
   HERO
=========================== */
.sv-hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue-dark) 50%, var(--blue) 100%);
  color: #fff;
  padding: 80px 20px 60px;
  overflow: hidden;
}

.sv-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/ser_img04.jpg') center/cover no-repeat;
  opacity: 0.25;
  z-index: 0;
}

.sv-hero__inner { position: relative; z-index: 1; }

.sv-hero__inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.sv-hero__label {
  font-size: 1.3rem;
  opacity: .8;
  letter-spacing: .1em;
  margin-bottom: 12px;
}

.sv-hero__title {
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
}

.sv-hero__service {
  font-family: 'Roboto', sans-serif;
  font-size: clamp(3.6rem, 6vw, 5.6rem);
  font-weight: 900;
  letter-spacing: .06em;
  margin-bottom: 20px;
}

.sv-hero__service span { color: #5bc8f5; }

.sv-hero__desc {
  font-size: 1.6rem;
  opacity: .9;
  line-height: 1.9;
  margin-bottom: 40px;
}

.sv-hero__points {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.sv-hero__point {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 8px;
  padding: 16px 24px;
  text-align: center;
  min-width: 180px;
}

.sv-hero__point-icon { font-size: 3.4rem; flex-shrink: 0; }

.sv-hero__point-main {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.3;
}

.sv-hero__point-main strong {
  font-size: 3.2rem;
  color: #5bc8f5;
}

.sv-hero__point-sub {
  font-size: 1.6rem;
  opacity: .75;
  margin-top: 4px;
}

.sv-hero__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===========================
   課題提起
=========================== */
.sv-problem { background: var(--gray-bg); }

.sv-problem__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.sv-problem__item {
  background: #fff;
  border-radius: 10px;
  padding: 28px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  border-top: 4px solid #bbb;
}

.sv-problem__icon {
  font-size: 3.6rem;
  display: block;
  margin-bottom: 12px;
}

.sv-problem__item p {
  font-size: 1.4rem;
  line-height: 1.7;
  color: #555;
}

.sv-problem__arrow {
  text-align: center;
  font-size: 3rem;
  color: var(--blue);
  margin-bottom: 20px;
}

.sv-problem__solution {
  text-align: center;
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--blue-dark);
}

.sv-problem__solution strong { color: var(--orange); }

/* ===========================
   セカイVPNとは
=========================== */
.sv-about { background: #fff; }

.sv-about__lead {
  text-align: center;
  font-size: 1.6rem;
  line-height: 2;
  color: #444;
  margin-bottom: 48px;
}

.sv-about__lead strong { color: var(--blue); }

.sv-about__features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sv-about__feature {
  background: var(--blue-light);
  border-radius: 10px;
  padding: 28px 24px;
  border-left: 5px solid var(--blue);
}

.sv-about__feature-icon { font-size: 3rem; margin-bottom: 10px; }

.sv-about__feature h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
}

.sv-about__feature p {
  font-size: 1.4rem;
  color: #555;
  line-height: 1.8;
}

/* ===========================
   こんな方にオススメ
=========================== */
.sv-recommend {
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff;
}

.sv-recommend__list {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sv-recommend__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.6rem;
  line-height: 1.7;
  background: rgba(255,255,255,.08);
  padding: 16px 20px;
  border-radius: 8px;
}

.sv-recommend__check {
  color: #5bc8f5;
  font-weight: 900;
  font-size: 1.8rem;
  flex-shrink: 0;
}

/* ===========================
   セカイVPNが選ばれる理由
=========================== */
.sv-reasons { background: var(--gray-bg); }

.sv-reasons__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.sv-reason {
  background: #fff;
  border-radius: 10px;
  padding: 32px 24px;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--blue);
  display: flex;
  flex-direction: column;
}

.sv-reason__title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 14px;
  line-height: 1.4;
}

.sv-reason__text {
  font-size: 1.5rem;
  color: #555;
  line-height: 1.8;
}

.sv-number p { font-size: 1.3rem; color: #666; }

/* ===========================
   接続イメージ
=========================== */
.sv-image { background: #fff; }

.sv-image__desc {
  text-align: center;
  font-size: 1.5rem;
  color: #555;
  margin-bottom: 32px;
  line-height: 1.8;
}

.sv-image__img {
  max-width: 720px;
  margin: 0 auto;
}

/* ===========================
   対応デバイス
=========================== */
.sv-devices { background: var(--gray-bg); }

.sv-devices__desc {
  text-align: center;
  font-size: 1.5rem;
  color: #555;
  margin-bottom: 36px;
}

.sv-devices__grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.sv-devices__note {
  text-align: center;
  font-size: 1.2rem;
  color: #777;
  line-height: 1.6;
}

.sv-device {
  background: #fff;
  border-radius: 10px;
  padding: 20px 10px;
  text-align: center;
  box-shadow: var(--shadow);
}

.sv-device img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin: 0 auto 8px;
}

.sv-device span {
  font-size: 1.1rem;
  color: #555;
  display: block;
}

/* ===========================
   サービス仕様
=========================== */
.sv-spec { background: var(--gray-bg); }

.sv-spec__table-wrap {
  max-width: 720px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.sv-spec__table {
  width: 100%;
  border-collapse: collapse;
}

.sv-spec__table tr { border-bottom: 1px solid #e0e8f4; }

.sv-spec__table th {
  background: var(--blue-light);
  color: var(--blue-dark);
  font-size: 1.4rem;
  font-weight: 700;
  padding: 16px 20px;
  text-align: left;
  width: 30%;
  vertical-align: top;
}

.sv-spec__table td {
  font-size: 1.4rem;
  padding: 16px 20px;
  color: #333;
  background: #fff;
  line-height: 1.8;
}

.sv-spec__table td small {
  font-size: 1.2rem;
  color: #777;
}

/* ===========================
   料金
=========================== */
.sv-price { background: #fff; }

.sv-price__table-wrap {
  max-width: 680px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.sv-price__table {
  width: 100%;
  border-collapse: collapse;
}

.sv-price__table tr { border-bottom: 1px solid #e0e8f4; }

.sv-price__table th {
  background: var(--blue-light);
  color: var(--blue-dark);
  font-size: 1.4rem;
  font-weight: 700;
  padding: 16px 20px;
  text-align: left;
  width: 36%;
}

.sv-price__table td {
  font-size: 1.4rem;
  padding: 16px 20px;
  color: #333;
  background: #fff;
}

.sv-price__main {
  font-size: 2.4rem;
  color: var(--orange);
  font-weight: 900;
}

.sv-price__free strong {
  color: var(--orange);
  font-size: 1.8rem;
}

/* ===========================
   信頼訴求
=========================== */
.sv-trust {
  background: #fff;
  text-align: center;
}

.sv-trust__question {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 900;
  color: #333;
  margin-bottom: 8px;
}

.sv-trust__answer {
  font-size: 2rem;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 24px;
}

.sv-trust__lead {
  font-size: 1.6rem;
  color: #555;
  line-height: 1.9;
  margin-bottom: 40px;
}

.sv-trust__lead strong { color: var(--blue-dark); }

.sv-trust__points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 680px;
  margin: 0 auto 40px;
  text-align: left;
}

.sv-trust__point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--blue-light);
  border-radius: 10px;
  padding: 20px;
  border-left: 5px solid var(--blue);
}

.sv-trust__point-icon {
  font-size: 2rem;
  color: var(--blue);
  font-weight: 900;
  flex-shrink: 0;
  line-height: 1.4;
}

.sv-trust__point strong {
  font-size: 1.6rem;
  color: var(--blue-dark);
  display: block;
  margin-bottom: 4px;
}

.sv-trust__point p {
  font-size: 1.3rem;
  color: #555;
  line-height: 1.6;
}

.sv-trust__honmono {
  font-size: 2.8rem;
  font-weight: 900;
  color: #333;
  margin-bottom: 32px;
}

.sv-trust__honmono strong {
  color: var(--orange);
  font-size: 3.6rem;
}

/* 無料体験バナーボタン */
.sv-taiken-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--orange);
  border-radius: 6px;
  padding: 16px 28px;
  max-width: 560px;
  margin: 0 auto;
  color: #fff;
  box-shadow: 0 6px 24px rgba(232,93,0,.4);
  transition: background .2s, transform .2s;
}

.sv-taiken-btn:hover {
  background: #c94d00;
  transform: translateY(-2px);
}

.sv-taiken-btn__label {
  font-size: 1.3rem;
  font-weight: 700;
  white-space: nowrap;
  opacity: .95;
}

.sv-taiken-btn__main {
  font-size: 2.4rem;
  font-weight: 900;
  flex: 1;
}

.sv-taiken-btn__arrow {
  font-size: 2rem;
  flex-shrink: 0;
}

/* ===========================
   CTA
=========================== */
.sv-cta {
  background: linear-gradient(135deg, var(--navy), var(--blue-dark));
  color: #fff;
  text-align: center;
}

.sv-cta__badge {
  display: inline-block;
  background: #f5c400;
  color: #333;
  font-size: 1.8rem;
  font-weight: 700;
  padding: 10px 28px;
  border-radius: 30px;
  margin-bottom: 24px;
}

.sv-cta__title {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 900;
  margin-bottom: 24px;
  line-height: 1.4;
}

.sv-cta__points {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  font-size: 1.5rem;
  opacity: .9;
}

.sv-cta__note {
  margin-top: 20px;
  font-size: 1.3rem;
  opacity: .7;
}

/* ===========================
   FOOTER
=========================== */
.sv-footer {
  background: var(--navy);
  color: rgba(255,255,255,.8);
  padding: 32px 20px;
}

.sv-footer__inner {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.sv-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 20px;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.sv-footer__links a { opacity: .7; transition: opacity .2s; }
.sv-footer__links a:hover { opacity: 1; text-decoration: underline; }

.sv-footer__copy { font-size: 1.1rem; opacity: .5; }

/* ===========================
   Responsive
=========================== */
@media (max-width: 860px) {
  .sv-problem__grid { grid-template-columns: repeat(2, 1fr); }
  .sv-devices__grid { grid-template-columns: repeat(4, 1fr); }
  .sv-about__features { grid-template-columns: 1fr; }
}

@media (max-width: 599px) {
  .sv-hero { padding: 48px 16px 40px; }
  .sv-hero__actions { flex-direction: column; align-items: center; }
  .sv-devices__grid { grid-template-columns: repeat(4, 1fr); }
  .sv-cta__points { flex-direction: column; gap: 8px; }
  .sv-inner { padding: 48px 16px; }
}