@charset "UTF-8";

:root {
  --sea: #0e5a8a;
  --sea-deep: #0a3f61;
  --sea-mid: #1779b4;
  --sea-wash: #eef6fb;
  --ink: #0f2433;
  --muted: #5f7d90;
  --line: #d8e6f0;
  --paper: #ffffff;
  --shell: 1140px;
  --header-height: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { display: block; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--sea-mid); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--sea);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before {
  width: 18px;
  height: 3px;
  border-radius: 2px;
  content: "";
  background: currentColor;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 20px; font-weight: 800; letter-spacing: -.3px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; object-fit: contain; background: var(--sea-wash); }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--sea-wash);
  color: var(--sea);
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.8vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; color: #46647a; font-size: 13px; font-weight: 700; border-bottom: 2px solid transparent; }
.primary-nav a:hover { border-bottom-color: var(--sea); color: var(--sea); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  gap: 7px;
  padding: 0 17px;
  border: 1px solid var(--sea);
  border-radius: 8px;
  background: var(--sea);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: #fff; color: var(--sea); }
.nav-download svg, .button svg { width: 17px; height: 17px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* hero: 中央大搜索框 + 三行结果条 + 波浪 */
.hero {
  position: relative;
  overflow: hidden;
  padding: 62px 0 0;
  background:
    radial-gradient(560px 300px at 12% 0%, rgba(23, 121, 180, .10), transparent 70%),
    linear-gradient(180deg, #f4fafd 0%, #ffffff 62%, #eef6fb 100%);
}
.hero-inner { position: relative; z-index: 2; max-width: 790px; padding-bottom: 108px; text-align: center; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 5px 13px 5px 6px;
  border: 1px solid rgba(14, 90, 138, .2);
  border-radius: 999px;
  margin: 0 0 20px;
  color: #46708c;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
}
.hero-kicker b {
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--sea);
  color: #fff;
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 1.4px;
}
.hero h1 {
  margin: 0;
  color: var(--sea-deep);
  font-size: clamp(46px, 7vw, 74px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.35vw, -3px);
  line-height: 1.02;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--sea);
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 620px; margin: 14px auto 0; color: var(--muted); font-size: 14px; }

.hero-search {
  display: flex;
  align-items: center;
  width: min(100%, 640px);
  min-height: 62px;
  gap: 10px;
  padding: 8px 8px 8px 18px;
  margin: 30px auto 0;
  border: 1px solid #cfe3f0;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(14, 90, 138, .13);
  text-align: left;
}
.hero-search-glass {
  flex: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--sea-mid);
  border-radius: 50%;
  position: relative;
}
.hero-search-glass::after {
  position: absolute;
  right: -6px;
  bottom: -5px;
  width: 8px;
  height: 2px;
  content: "";
  background: var(--sea-mid);
  transform: rotate(45deg);
}
.hero-search input {
  flex: 1 1 auto;
  min-width: 0;
  height: 40px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 15px/1.4 inherit;
  outline: none;
}
.hero-search input::placeholder { color: #9cb4c4; }
.hero-search-swap {
  flex: none;
  padding: 3px 9px;
  border: 1px dashed #b9d6e8;
  border-radius: 6px;
  color: #4f7f9c;
  font-size: 11px;
  font-weight: 700;
}
.hero-search-go {
  flex: none;
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 22px;
  border-radius: 9px;
  background: var(--sea);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.hit-list {
  width: min(100%, 640px);
  padding: 0;
  margin: 16px auto 0;
  list-style: none;
  text-align: left;
}
.hit-list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 9px;
  margin-bottom: 7px;
  background: rgba(255, 255, 255, .86);
  transition: border-color .18s ease, transform .18s ease;
}
.hit-list li:hover { border-color: #a9cde4; transform: translateX(3px); }
.hit-list b { color: #a9c6d8; font-size: 11px; font-weight: 800; letter-spacing: .5px; }
.hit-name { font-size: 14.5px; font-weight: 800; }
.hit-meta { color: var(--muted); font-size: 11.5px; }
.hit-list em {
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--sea-wash);
  color: var(--sea);
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
  white-space: nowrap;
}

.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 18px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 12px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 800;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--sea); color: #fff; box-shadow: 0 14px 28px rgba(14, 90, 138, .24); }
.button-primary:hover { background: var(--sea-deep); transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #3c6683; border-bottom: 1px dashed #9dc2d8; font-size: 13px; font-weight: 700; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--sea); }

.hero-waves {
  position: absolute;
  bottom: -1px;
  left: 0;
  z-index: 1;
  width: 100%;
  height: auto;
  pointer-events: none;
}

/* features: 四列横排 */
.features { padding: 66px 0 70px; background: #fff; }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.7vw, 33px); font-weight: 800; letter-spacing: -.7px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 640px; margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); align-items: end; gap: 26px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.feature-card { padding: 24px 20px 4px 0; border-right: 1px solid var(--line); }
.feature-card:last-child { border-right: 0; }
.feature-card + .feature-card { padding-left: 20px; }
.feature-no { display: block; margin-bottom: 14px; color: #9cbdd1; font-size: 12px; font-weight: 800; letter-spacing: 1.4px; }
.feature-card h3 { margin: 0 0 7px; font-size: 17px; font-weight: 800; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* shots: 四张一排 */
.shots { padding: 60px 0 68px; background: var(--sea-wash); }
.shot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 13px; }
.shot-card { margin: 0; border: 1px solid #d3e4ef; border-radius: 10px; background: #fff; overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: center 22%; }
.shot-card figcaption { display: flex; align-items: flex-start; gap: 8px; padding: 10px 11px 12px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--sea); font-size: 10px; font-weight: 800; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 13px; font-weight: 800; line-height: 1.4; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 400; }

/* faq */
.faq { padding: 66px 0 72px; background: #fff; }
.faq-layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: clamp(24px, 4vw, 54px); }
.faq-heading { align-self: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 17px 0; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15px; font-weight: 800; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid #bdd7e7; border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--sea);
  transform: translate(-50%, -50%);
}
.faq-list summary i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary i::after { transform: translate(-50%, -50%) rotate(0); }
.faq-list details p { padding: 0 26px 16px 0; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.9; }

/* reviews: 单列宽卡 */
.reviews { padding: 64px 0 70px; background: var(--sea-wash); }
.review-list { padding: 0; margin: 0; list-style: none; max-width: 860px; }
.review-card {
  position: relative;
  padding: 18px 22px 18px 26px;
  border-bottom: 1px solid #d3e4ef;
  background: transparent;
}
.review-card:first-child { border-top: 1px solid #d3e4ef; }
.review-card::before {
  position: absolute;
  top: 27px;
  left: 4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  content: "";
  background: var(--sea-mid);
}
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.review-meta b { color: var(--sea-deep); font-size: 13.5px; font-weight: 800; }
.review-meta time { color: #86a1b4; font-size: 10.5px; }
.review-card p { margin: 0; color: #3e5b6d; font-size: 13.5px; line-height: 1.8; }

/* steps: 竖排时间轴 */
.steps { padding: 62px 0 66px; background: #fff; }
.step-list { max-width: 780px; padding: 0; margin: 0; list-style: none; }
.step-list li { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 20px; padding: 0 0 22px; }
.step-list li:last-child { padding-bottom: 0; }
.step-list li > span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid #c6dded;
  border-radius: 50%;
  color: var(--sea);
  font-size: 14px;
  font-weight: 800;
}
.step-list li > div { padding: 4px 0 16px 18px; border-left: 1px solid var(--line); }
.step-list h3 { margin: 0 0 5px; font-size: 16px; font-weight: 800; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 22px 0 56px; }
.download-inner {
  padding: 48px clamp(24px, 5vw, 56px) 40px;
  border-radius: 16px;
  background:
    radial-gradient(460px 220px at 92% 0%, rgba(255, 255, 255, .18), transparent 72%),
    linear-gradient(120deg, #0e5a8a, #146f9f 62%, #1779b4);
  color: #eaf6ff;
  text-align: center;
}
.download .eyebrow { color: #9fd2ee; }
.download .eyebrow::before { background: #9fd2ee; }
.download h2 { max-width: 620px; margin: 0 auto; color: #fff; }
.download-inner > p { max-width: 560px; margin: 12px auto 26px; color: #cbe6f5; font-size: 14px; }
.download .button-primary { background: #fff; color: var(--sea-deep); box-shadow: 0 14px 26px rgba(4, 32, 51, .28); }
.download .button-primary:hover { background: #eaf6ff; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; padding: 22px 0 0; margin: 26px 0 0; border-top: 1px solid rgba(255, 255, 255, .22); list-style: none; }
.download-notes li { color: #c6e2f2; font-size: 11.5px; }
.download-notes li::before { margin-right: 7px; content: "·"; }

/* footer */
.site-footer { padding: 40px 0 48px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 36px; align-items: start; }
.footer-brand strong { font-size: 17px; font-weight: 800; }
.footer-brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-nav a { color: #4c6b7f; font-size: 12px; }
.footer-nav a:hover { color: var(--sea); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: var(--muted); }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #86a1b4; font-size: 11.5px; line-height: 1.8; }

@media (max-width: 1024px) {
  .feature-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card:nth-child(2n) { border-right: 0; }
  .feature-card:nth-child(2n+1) { padding-left: 0; }
  .feature-card:nth-child(n+3) { padding-top: 22px; border-top: 1px solid var(--line); }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 6px 24px 14px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 16px 26px rgba(15, 36, 51, .12);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-inner { padding-bottom: 84px; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq-layout { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero { padding-top: 46px; }
  .hero-search { min-height: 56px; padding-left: 14px; gap: 8px; }
  .hero-search-swap { display: none; }
  .hero-search-go { height: 40px; padding: 0 16px; font-size: 13px; }
  .hit-list li { grid-template-columns: 22px minmax(0, 1fr) auto; gap: 8px; padding: 10px 12px; }
  .hit-meta { display: none; }
  .feature-row { grid-template-columns: 1fr; }
  .feature-card { padding: 20px 0 4px; border-right: 0; }
  .feature-card + .feature-card { padding-left: 0; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .shot-card figcaption small { display: none; }
  .review-card { padding: 16px 12px 16px 20px; }
  .step-list li { grid-template-columns: 42px minmax(0, 1fr); gap: 12px; }
  .step-list li > span { width: 38px; height: 38px; font-size: 12px; }
  .step-list li > div { padding-left: 12px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 6px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 34px; padding: 0 10px; font-size: 11px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 40px; }
  .hit-list em { display: none; }
  .button { width: 100%; }
}