:root {
  --brand: #187ed3;
  --brand-dark: #105f9f;
  --support: #fed45c;
  --action: #ff5400;
  --ink: #1f2937;
  --muted: #475569;
  --surface: #ffffff;
  --page: #f7fafc;
  --line: #dbe5ef;
  --shadow: 0 18px 50px rgba(24, 126, 211, 0.12);
  --radius: 20px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--surface); color: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; line-height: 1.7; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--support); outline-offset: 3px; }
[hidden] { display: none !important; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 16px; border-radius: 8px; background: var(--ink); color: #fff; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(219, 229, 239, 0.85); background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(14px); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; }
.brand img { width: 248px; height: auto; }
.site-menu { display: flex; align-items: center; gap: 24px; margin-left: 10px; }
.site-menu a { color: var(--muted); font-size: 15px; font-weight: 600; }
.site-menu a:hover { color: var(--brand); }
.site-menu .mobile-only { display: none; }
.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 11px; border: 1px solid var(--line); border-radius: 12px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; border-radius: 4px; background: var(--ink); }

.button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border: 1px solid transparent; border-radius: 12px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--action); color: #fff; box-shadow: 0 10px 24px rgba(255, 84, 0, 0.22); }
.button-quiet { border-color: var(--line); background: #fff; color: var(--brand-dark); }
.button-light { background: #fff; color: var(--brand-dark); box-shadow: 0 10px 28px rgba(15, 23, 42, 0.12); }
.button-outline { border-color: var(--brand); background: #fff; color: var(--brand); }
.button-large { min-height: 50px; padding: 12px 24px; }
.button-block { width: 100%; }

.hero { position: relative; overflow: hidden; background: linear-gradient(135deg, #eaf5ff 0%, #fff8dc 54%, #fff 100%); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(2px); }
.hero::before { width: 300px; height: 300px; right: -90px; top: -100px; background: rgba(254, 212, 92, .45); }
.hero::after { width: 220px; height: 220px; left: -100px; bottom: -120px; background: rgba(24, 126, 211, .18); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr); gap: 64px; align-items: center; min-height: 620px; padding-top: 70px; padding-bottom: 70px; }
.eyebrow { margin: 0 0 10px; color: var(--action); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.hero h1 { max-width: 780px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.16; letter-spacing: -.035em; }
.hero-lead { max-width: 720px; margin: 24px 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 28px 0 0; padding: 0; color: var(--brand-dark); list-style: none; font-weight: 600; }
.hero-points li::before { content: "✓"; margin-right: 7px; color: var(--action); }
.login-entry { padding: 30px; border: 1px solid rgba(24, 126, 211, .18); border-radius: 26px; background: rgba(255, 255, 255, .94); box-shadow: var(--shadow); }
.entry-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 16px; background: var(--brand); color: var(--support); font-size: 26px; font-weight: 900; }
.entry-kicker { margin: 18px 0 4px; color: var(--action); font-weight: 800; }
.login-entry h2 { margin: 0; font-size: 26px; line-height: 1.35; }
.login-entry > p:not(.entry-kicker) { color: var(--muted); }
.login-entry .button + .button { margin-top: 10px; }
.entry-note { margin: 14px 0 0; font-size: 13px; text-align: center; }

.section { padding: 86px 0; }
.section-soft { background: var(--page); }
.section-heading { max-width: 760px; margin: 0 auto 40px; text-align: center; }
.section-heading h2, .split-layout h2, .notice-card h2, .cta-band h2 { margin: 0; font-size: clamp(30px, 3.8vw, 44px); line-height: 1.25; }
.section-heading > p:last-child, .section-lead { color: var(--muted); }
.section-heading-row { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 30px; text-align: left; }
.text-link { flex: 0 0 auto; color: var(--brand); font-weight: 800; }

.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.feature-card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.feature-card > span { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; background: #eaf5ff; color: var(--brand); font-weight: 900; }
.feature-card h3 { margin: 18px 0 8px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 15px; }

.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 8px 24px rgba(15, 23, 42, .06); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.product-card:hover { transform: translateY(-5px); border-color: rgba(24, 126, 211, .45); box-shadow: var(--shadow); }
.product-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.product-body { padding: 17px 18px 19px; }
.product-body h3 { margin: 0 0 6px; font-size: 18px; }
.product-price { display: block; color: var(--action); font-size: 17px; font-weight: 900; }
.product-action { display: block; margin-top: 12px; color: var(--brand); font-size: 14px; font-weight: 700; }
.price-disclaimer { margin: 28px 0 0; padding: 16px 20px; border-left: 4px solid var(--support); background: #fff9df; color: var(--muted); font-size: 14px; }

.section-blue { background: var(--brand); color: #fff; }
.section-heading-light .eyebrow { color: var(--support); }
.section-heading-light > p:last-child { color: rgba(255, 255, 255, .8); }
.scenario-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.scenario-grid article { padding: 25px; border: 1px solid rgba(255, 255, 255, .22); border-radius: var(--radius); background: rgba(255, 255, 255, .1); }
.scenario-grid span { color: var(--support); font-size: 14px; font-weight: 900; }
.scenario-grid h3 { margin: 10px 0 8px; }
.scenario-grid p { margin: 0; color: rgba(255, 255, 255, .82); }

.split-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.check-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.check-list article { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--page); }
.check-list strong { color: var(--brand-dark); font-size: 18px; }
.check-list p { margin: 7px 0 0; color: var(--muted); }

.process-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.process-list li { padding: 23px 20px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.process-list li > span { color: var(--action); font-size: 28px; font-weight: 900; }
.process-list h3 { margin: 10px 0 6px; }
.process-list p { margin: 0; color: var(--muted); font-size: 14px; }

.notice-card { display: grid; grid-template-columns: .8fr 1.1fr auto; gap: 34px; align-items: center; padding: 42px; border: 1px solid var(--line); border-radius: 26px; background: linear-gradient(120deg, #f4faff, #fff9e7); }
.notice-copy p { margin: 0; color: var(--muted); }
.notice-copy p + p { margin-top: 10px; }

.faq-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 70px; align-items: start; }
.faq-heading { position: sticky; top: 110px; margin: 0; text-align: left; }
.faq-item { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.faq-item + .faq-item { margin-top: 12px; }
.faq-question { width: 100%; min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 15px 20px; border: 0; background: #fff; color: var(--ink); text-align: left; font-weight: 800; cursor: pointer; }
.faq-question span { color: var(--brand); font-size: 24px; }
.faq-answer { padding: 0 20px 18px; color: var(--muted); }
.faq-answer p { margin: 0; }

.cta-band { padding: 58px 0; background: linear-gradient(115deg, var(--brand-dark), var(--brand)); color: #fff; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-inner .eyebrow { color: var(--support); }
.cta-inner p:last-child { margin-bottom: 0; color: rgba(255, 255, 255, .82); }
.site-footer { padding: 30px 0; border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; gap: 30px; align-items: center; color: var(--muted); font-size: 14px; }
.footer-inner strong { color: var(--ink); font-size: 18px; }
.footer-inner p { margin: 4px 0 0; }
.back-to-top { position: fixed; right: 22px; bottom: 22px; z-index: 40; width: 48px; height: 48px; border: 0; border-radius: 14px; background: var(--brand); color: #fff; font-size: 22px; box-shadow: var(--shadow); cursor: pointer; }

@media (max-width: 900px) {
  .header-inner { flex-wrap: wrap; min-height: 70px; padding: 10px 0; }
  .brand img { width: 220px; }
  .menu-toggle { display: block; margin-left: auto; }
  .site-menu { order: 3; width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 0; padding: 12px 0 4px; }
  .site-menu a { min-height: 44px; display: flex; align-items: center; padding: 8px 12px; border-radius: 10px; background: var(--page); }
  .header-actions { order: 4; width: 100%; margin: 0 0 4px; }
  .header-actions .button { flex: 1; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; min-height: 0; }
  .login-entry { max-width: 600px; }
  .feature-grid, .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .process-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .split-layout, .faq-layout { grid-template-columns: 1fr; gap: 42px; }
  .faq-heading { position: static; }
  .notice-card { grid-template-columns: 1fr; }
  .notice-card .button { justify-self: start; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1180px); }
  .brand img { width: 190px; }
  .header-actions { display: none; }
  .site-menu { grid-template-columns: 1fr; }
  .site-menu .mobile-only { display: flex; }
  .site-menu .mobile-register { justify-content: center; background: var(--brand); color: #fff; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 52px; padding-bottom: 54px; }
  .hero h1 { font-size: 38px; }
  .hero-lead { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .login-entry { padding: 24px; }
  .section { padding: 64px 0; }
  .section-heading-row, .cta-inner { display: block; }
  .text-link { display: inline-flex; margin-top: 14px; }
  .feature-grid, .scenario-grid, .check-list { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .product-body { padding: 13px 12px 15px; }
  .product-body h3, .product-price { font-size: 15px; }
  .product-action { font-size: 12px; }
  .process-list { grid-template-columns: 1fr; }
  .notice-card { padding: 28px 22px; }
  .cta-inner .button { width: 100%; margin-top: 20px; }
  .footer-inner { grid-template-columns: 1fr; gap: 14px; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}

/* Modern graphite and mint Bento refresh */
.theme-modern-bento {
  --brand: #111827;
  --brand-dark: #020617;
  --support: #5eead4;
  --action: #10b981;
  --ink: #111827;
  --muted: #52605d;
  --surface: #ffffff;
  --page: #f3f6f5;
  --line: #dce5e2;
  --shadow: 0 22px 60px rgba(2, 6, 23, .13);
  --radius: 22px;
  background: var(--surface);
}
.theme-modern-bento .site-header {
  border-bottom-color: rgba(17, 24, 39, .08);
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 8px 30px rgba(2, 6, 23, .05);
  backdrop-filter: blur(20px) saturate(150%);
}
.theme-modern-bento .site-menu a {
  position: relative;
  color: #46534f;
}
.theme-modern-bento .site-menu a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: #10b981;
  transform: scaleX(0);
  transition: transform .2s ease;
}
.theme-modern-bento .site-menu a:hover::after { transform: scaleX(1); }
.theme-modern-bento .button { border-radius: 14px; }
.theme-modern-bento .button-primary {
  background: #10b981;
  color: #03150f;
  box-shadow: 0 12px 28px rgba(16, 185, 129, .24);
}
.theme-modern-bento .button-primary:hover { background: #34d399; }
.theme-modern-bento .button-quiet { border-color: #cbd5d1; color: #111827; }
.theme-modern-bento .button-outline { border-color: #10b981; color: #047857; }
.theme-modern-bento .button-light { color: #111827; }
.theme-modern-bento .hero {
  color: #fff;
  background: linear-gradient(132deg, #020617 0%, #111827 52%, #0f3d35 100%);
  isolation: isolate;
}
.theme-modern-bento .hero::before {
  width: 520px;
  height: 520px;
  right: -140px;
  top: -190px;
  background: radial-gradient(circle, rgba(94, 234, 212, .36), rgba(16, 185, 129, 0) 68%);
  filter: blur(0);
}
.theme-modern-bento .hero::after {
  width: 420px;
  height: 420px;
  left: 32%;
  bottom: -310px;
  background: radial-gradient(circle, rgba(16, 185, 129, .22), rgba(16, 185, 129, 0) 70%);
}
.theme-modern-bento .hero-grid { min-height: 650px; }
.theme-modern-bento .hero .eyebrow { color: #5eead4; }
.theme-modern-bento .hero h1 { max-width: 760px; font-size: clamp(42px, 5vw, 66px); }
.theme-modern-bento .hero-lead { color: rgba(255, 255, 255, .72); }
.theme-modern-bento .hero-points { color: #d1fae5; }
.theme-modern-bento .hero-points li::before { color: #5eead4; }
.theme-modern-bento .login-entry {
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .14), rgba(255, 255, 255, .06));
  box-shadow: 0 26px 70px rgba(0, 0, 0, .3);
  backdrop-filter: blur(22px);
}
.theme-modern-bento .entry-icon {
  color: #022c22;
  background: linear-gradient(135deg, #5eead4, #10b981);
}
.theme-modern-bento .entry-kicker { color: #5eead4; }
.theme-modern-bento .login-entry > p:not(.entry-kicker) { color: rgba(255, 255, 255, .7); }
.theme-modern-bento .login-entry .button-outline { color: #d1fae5; background: transparent; }
.theme-modern-bento #gifts {
  position: relative;
  background: #f3f6f5;
}
.theme-modern-bento #gifts::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #10b981, transparent);
}
.theme-modern-bento .section-heading { margin-bottom: 44px; }
.theme-modern-bento .section-heading-row {
  padding: 28px 30px;
  border: 1px solid rgba(16, 185, 129, .18);
  border-radius: 24px;
  background: rgba(255, 255, 255, .7);
  box-shadow: 0 14px 44px rgba(2, 6, 23, .06);
}
.theme-modern-bento .eyebrow { color: #047857; }
.theme-modern-bento .text-link { color: #047857; }
.theme-modern-bento .product-grid { gap: 18px; }
.theme-modern-bento .product-card {
  overflow: hidden;
  border: 1px solid rgba(17, 24, 39, .09);
  border-radius: 18px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 10px 30px rgba(2, 6, 23, .06);
}
.theme-modern-bento .product-card:hover {
  border-color: rgba(16, 185, 129, .7);
  box-shadow: 0 22px 46px rgba(16, 185, 129, .14);
  transform: translateY(-7px);
}
.theme-modern-bento .product-card img {
  aspect-ratio: 1;
  padding: 18px;
  object-fit: contain;
  background: linear-gradient(145deg, #fff, #f1f5f3);
}
.theme-modern-bento .product-body {
  position: relative;
  padding: 18px 18px 20px;
  border-top: 1px solid #e5ebe9;
}
.theme-modern-bento .product-body h3 {
  min-height: 54px;
  margin-bottom: 8px;
  color: #111827;
  font-size: 17px;
  line-height: 1.55;
}
.theme-modern-bento .product-price { color: #059669; font-size: 19px; }
.theme-modern-bento .product-action {
  margin-top: 11px;
  padding-top: 11px;
  border-top: 1px dashed #d6e2de;
  color: #64706c;
  font-size: 12px;
}
.theme-modern-bento .price-disclaimer {
  border: 1px solid rgba(16, 185, 129, .22);
  border-left: 5px solid #10b981;
  border-radius: 14px;
  background: #ecfdf5;
}
.theme-modern-bento .feature-grid { grid-auto-rows: 1fr; }
.theme-modern-bento .feature-card,
.theme-modern-bento .check-list article,
.theme-modern-bento .process-list li,
.theme-modern-bento .faq-item {
  border-color: rgba(17, 24, 39, .09);
  box-shadow: 0 10px 30px rgba(2, 6, 23, .04);
}
.theme-modern-bento .feature-card { border-radius: 22px; }
.theme-modern-bento .feature-card:nth-child(1),
.theme-modern-bento .feature-card:nth-child(4) { background: #111827; color: #fff; }
.theme-modern-bento .feature-card:nth-child(1) p,
.theme-modern-bento .feature-card:nth-child(4) p { color: rgba(255, 255, 255, .7); }
.theme-modern-bento .feature-card > span { color: #047857; background: #d1fae5; }
.theme-modern-bento .section-blue {
  background: linear-gradient(128deg, #111827, #064e3b);
}
.theme-modern-bento .scenario-grid article {
  border-color: rgba(94, 234, 212, .22);
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(10px);
}
.theme-modern-bento .scenario-grid span { color: #5eead4; }
.theme-modern-bento .check-list article { border-radius: 20px; background: #f3f6f5; }
.theme-modern-bento .check-list strong { color: #047857; }
.theme-modern-bento .process-list li { border-radius: 20px; }
.theme-modern-bento .process-list li > span { color: #10b981; }
.theme-modern-bento .notice-card {
  border-color: rgba(16, 185, 129, .2);
  background: linear-gradient(120deg, #ecfdf5, #f8faf9);
}
.theme-modern-bento .faq-question span { color: #10b981; }
.theme-modern-bento .cta-band { background: linear-gradient(115deg, #020617, #064e3b); }
.theme-modern-bento .cta-inner .eyebrow { color: #5eead4; }
.theme-modern-bento .back-to-top { color: #022c22; background: #5eead4; }
@media (max-width: 900px) {
  .theme-modern-bento .site-menu a::after { display: none; }
  .theme-modern-bento .site-menu a { background: #f3f6f5; }
  .theme-modern-bento .hero-grid { min-height: 0; }
}
@media (max-width: 640px) {
  .theme-modern-bento .hero { background: linear-gradient(155deg, #020617, #111827 62%, #064e3b); }
  .theme-modern-bento .hero h1 { font-size: 38px; }
  .theme-modern-bento .section-heading-row { padding: 22px 20px; }
  .theme-modern-bento .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .theme-modern-bento .product-card img { padding: 10px; }
  .theme-modern-bento .product-body { padding: 13px 12px 15px; }
  .theme-modern-bento .product-body h3 { min-height: 46px; font-size: 14px; }
}