:root {
  --navy: #08245a;
  --navy-2: #0d3277;
  --blue: #145ed8;
  --orange: #ff5b13;
  --orange-2: #ff7a1a;
  --ink: #12203a;
  --muted: #5c6880;
  --line: #dbe5f4;
  --pale: #f4f8fe;
  --white: #fff;
  --container: 1200px;
  --shadow: 0 16px 45px rgba(8, 36, 90, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; color: var(--ink); font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; background: #fff; line-height: 1.65; }
body.large-text { font-size: 18px; }
button, a { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
.skip-link { position: fixed; z-index: 200; top: 10px; left: 10px; transform: translateY(-160%); padding: 10px 16px; color: #fff; background: var(--navy); border-radius: 8px; }
.skip-link:focus { transform: none; }
.section-inner { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }

.site-header { position: sticky; z-index: 100; top: 0; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(8,36,90,.1); backdrop-filter: blur(16px); }
.header-inner { width: min(1320px, calc(100% - 48px)); min-height: 78px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--navy); font-size: clamp(19px, 2vw, 27px); font-weight: 900; letter-spacing: .02em; white-space: nowrap; }
.brand-mark { width: 44px; height: 48px; color: var(--navy); }
.brand-mark svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.desktop-nav { height: 78px; display: flex; align-items: stretch; gap: 48px; }
.desktop-nav a { position: relative; min-width: 68px; display: grid; place-items: center; color: #25314b; font-weight: 700; }
.desktop-nav a::after { content: ""; position: absolute; right: 50%; bottom: 0; left: 50%; height: 3px; background: var(--blue); transition: .25s ease; }
.desktop-nav a:hover::after, .desktop-nav a.active::after { right: 4px; left: 4px; }
.desktop-nav a.active { color: var(--navy); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.text-size { min-width: 52px; min-height: 44px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--navy); font-weight: 800; cursor: pointer; }
.text-size[aria-pressed="true"] { color: #fff; border-color: var(--navy); background: var(--navy); }
.menu-toggle { width: 46px; height: 44px; padding: 10px; display: none; flex-direction: column; justify-content: center; gap: 5px; border: 0; border-radius: 8px; background: transparent; cursor: pointer; }
.menu-toggle span { width: 100%; height: 2px; background: var(--navy); transition: .2s; }
.mobile-nav { padding: 8px 24px 20px; border-top: 1px solid var(--line); }
.mobile-nav a { display: block; padding: 12px 8px; color: var(--navy); border-bottom: 1px solid var(--line); font-weight: 700; }

.hero { position: relative; min-height: 660px; display: grid; align-items: center; overflow: hidden; background: #fff; }
.hero-content { width: min(1320px, calc(100% - 48px)); margin-inline: auto; display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; }
.hero-copy { position: relative; z-index: 2; padding: 72px 0 88px; }
.hero h1 { max-width: 660px; margin: 0 0 25px; color: var(--navy); font-size: clamp(50px, 5.6vw, 82px); line-height: 1.12; letter-spacing: -.045em; }
.hero h1 span { color: var(--orange); }
.hero-copy > p { max-width: 620px; margin: 0; color: #445069; font-size: clamp(18px, 1.55vw, 23px); line-height: 1.75; }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 16px; }
.button { min-height: 56px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 2px solid var(--navy); border-radius: 10px; font-weight: 800; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(8,36,90,.16); }
.button svg, .call-button svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { color: #fff; background: var(--navy-2); }
.button-secondary { color: var(--navy); background: #fff; }
.hero-copy .hero-note { margin-top: 24px; color: #56647c; font-size: 14px; }
.hero-note span { color: var(--orange); }
.hero-media { position: relative; align-self: stretch; min-height: 660px; margin-right: calc((100vw - min(1320px, calc(100vw - 48px))) / -2); overflow: hidden; }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, #fff 0%, rgba(255,255,255,.94) 7%, transparent 30%); pointer-events: none; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 61% center; }
.signal-lines { position: absolute; bottom: -20px; left: -80px; width: 560px; height: 210px; border: 1px solid #d9e8fc; border-radius: 50%; opacity: .8; transform: rotate(8deg); }
.signal-lines::before, .signal-lines::after { content: ""; position: absolute; border: 1px solid #d9e8fc; border-radius: 50%; }
.signal-lines::before { inset: 28px; }.signal-lines::after { inset: 56px; }

.quick-rule { color: #fff; background: var(--navy); }
.rule-inner { min-height: 84px; display: flex; align-items: center; justify-content: center; gap: 24px; text-align: center; }
.rule-inner > span { color: #a9c4ef; }
.rule-inner strong { font-size: 17px; }
.rule-inner i { width: 5px; height: 5px; border-radius: 50%; background: var(--orange); }

.section { padding: 118px 0; }
.scam-layout { display: grid; grid-template-columns: 220px 1fr; gap: 70px; }
.section-rail { position: sticky; top: 120px; align-self: start; }
.section-number { margin: 0 0 -12px; color: #cad9f2; font-size: 74px; font-weight: 900; line-height: 1; }
.section-rail h2 { margin: 0; color: var(--navy); font-size: 47px; line-height: 1.17; letter-spacing: .05em; }
.rail-line { width: 70px; height: 4px; margin: 25px 0; background: var(--orange); }
.section-rail > p:last-child { margin: 0; color: var(--muted); }
.mobile-heading { display: none; }
.scam-list { border-top: 1px solid var(--line); }
.scam-item { border-bottom: 1px solid var(--line); }
.scam-summary { width: 100%; min-height: 124px; padding: 22px 8px; display: grid; grid-template-columns: 76px 58px minmax(0,1fr) auto 24px; align-items: center; gap: 20px; border: 0; background: #fff; text-align: left; cursor: pointer; }
.scam-summary:hover .scam-title strong { color: var(--blue); }
.scam-index { color: #c9d9f5; font-size: 42px; font-weight: 900; }
.scam-icon { width: 56px; height: 56px; display: grid; place-items: center; color: var(--navy); border: 2px solid var(--navy); border-radius: 50%; font-size: 21px; font-weight: 900; }
.scam-title { min-width: 0; display: flex; flex-direction: column; }
.scam-title strong { color: var(--navy); font-size: 23px; transition: color .2s; }
.scam-title small { margin-top: 4px; color: var(--muted); font-size: 15px; }
.expand-label { color: var(--blue); font-size: 14px; font-weight: 800; }
.chevron { width: 22px; height: 22px; fill: none; stroke: var(--blue); stroke-width: 2; transition: transform .25s; }
.scam-summary[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.scam-detail { margin: 0 8px 24px 154px; padding: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 34px; background: var(--pale); border: 1px solid #e0eaf8; border-radius: 16px; box-shadow: var(--shadow); }
.scam-detail[hidden] { display: none; }
.message-demo { padding: 20px; display: flex; gap: 14px; background: #fff; border: 1px solid #ccd9ed; border-radius: 13px; }
.avatar { flex: 0 0 auto; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--navy); font-weight: 800; }
.message-demo b { color: var(--navy); }.message-demo p { margin: 6px 0 0; color: #4b5870; font-size: 14px; }
.red-flags { padding-left: 30px; border-left: 1px solid #cbd9ee; }
.red-flags h3 { margin: 0 0 10px; color: var(--orange); font-size: 19px; }
.red-flags ul { margin: 0; padding: 0; list-style: none; }
.red-flags li { position: relative; padding: 8px 0 8px 26px; border-bottom: 1px dashed #cbd9ee; }
.red-flags li::before { content: "!"; position: absolute; left: 0; top: 10px; width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--orange); font-size: 12px; font-weight: 900; }
.detail-copy { grid-column: 1/-1; }.detail-copy b { color: var(--orange); }.detail-copy p { margin: 4px 0 0; color: #4c5a73; }

.guide { padding-bottom: 90px; background: linear-gradient(180deg, #f7faff 0%, #fff 72%); }
.section-heading p { margin: 0 0 8px; color: var(--orange); font-weight: 900; letter-spacing: .14em; }
.section-heading h2 { margin: 0; color: var(--navy); font-size: clamp(34px, 4vw, 52px); line-height: 1.25; }
.section-heading > span { display: block; margin-top: 12px; color: var(--muted); }
.centered { text-align: center; }
.guide-steps { margin-top: 62px; display: grid; grid-template-columns: repeat(5, 1fr); }
.guide-step { position: relative; min-width: 0; min-height: 255px; padding: 12px 22px 30px; display: flex; flex-direction: column; align-items: center; border: 0; border-right: 1px solid var(--line); background: transparent; text-align: center; cursor: pointer; transition: .25s ease; }
.guide-step:last-child { border-right: 0; }
.guide-step:hover { transform: translateY(-5px); }
.step-number { align-self: flex-start; color: #adc5ec; font-size: 48px; font-weight: 900; line-height: 1; }
.step-icon { width: 70px; height: 70px; margin: 6px 0 18px; display: grid; place-items: center; color: var(--navy); border-radius: 50%; background: #eaf2fd; font-size: 24px; font-weight: 900; }
.guide-step strong { color: var(--navy); font-size: 19px; }.guide-step small { margin-top: 8px; color: var(--muted); font-size: 14px; }
.check { position: absolute; top: 14px; right: 18px; width: 28px; height: 28px; display: grid; place-items: center; color: transparent; border: 2px solid #bdd0ed; border-radius: 50%; }
.guide-step[aria-pressed="true"] { background: #edf5ff; border-radius: 14px; box-shadow: 0 12px 30px rgba(8,36,90,.08); }
.guide-step[aria-pressed="true"] .check { color: #fff; border-color: var(--blue); background: var(--blue); }
.progress-wrap { max-width: 610px; margin: 32px auto 0; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; color: var(--muted); font-size: 14px; }
.progress-track { height: 8px; overflow: hidden; border-radius: 99px; background: #e2ebf8; }.progress-track i { width: 0%; height: 100%; display: block; background: linear-gradient(90deg, var(--blue), var(--orange)); transition: width .25s; }
.progress-wrap b { color: var(--navy); }
.big-rule { position: relative; margin-top: 70px; text-align: center; }
.big-rule > span { display: inline-block; width: 72px; height: 20px; margin: 0 28px; border-top: 2px solid #bcd0ee; vertical-align: middle; }
.big-rule > span::after { content: ""; display: block; width: 12px; height: 4px; margin: -3px auto 0; background: var(--orange); transform: skew(-25deg); }
.big-rule strong { color: var(--navy); font-size: clamp(42px, 6vw, 74px); letter-spacing: .06em; }
.big-rule i { color: var(--orange); font-style: normal; }.big-rule em { color: var(--orange); font-style: normal; }
.big-rule p { margin: 4px 0 0; color: var(--muted); }

.help { position: relative; overflow: hidden; padding: 86px 0 70px; color: #fff; background: radial-gradient(circle at 85% 40%, #12418c 0, transparent 34%), linear-gradient(135deg, #041b48, #082967 72%, #061e4c); }
.help::before, .help::after { content: ""; position: absolute; width: 360px; height: 360px; border: 1px solid rgba(167,198,242,.15); border-radius: 50%; }
.help::before { right: -100px; top: 10px; }.help::after { right: -55px; top: 55px; }
.help-inner { position: relative; z-index: 2; }
.help-heading { display: flex; align-items: center; justify-content: center; gap: 18px; text-align: center; }
.help-heading svg { width: 36px; height: 36px; fill: var(--orange); stroke: #fff; stroke-width: 1.5; }
.help-heading h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); }.help-heading span { color: var(--orange-2); }
.help-steps { margin: 58px 0 46px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; }
.help-steps li { padding: 6px 36px; display: flex; gap: 20px; border-right: 1px solid rgba(255,255,255,.25); }.help-steps li:last-child { border-right: 0; }
.help-steps li > span { color: #8eb1e6; font-size: 46px; font-weight: 900; line-height: 1; }
.help-steps strong { font-size: 21px; }.help-steps p { margin: 8px 0 0; color: #c7d6ec; font-size: 14px; }
.call-area { text-align: center; }.call-button { min-width: 320px; min-height: 70px; padding: 0 34px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; border-radius: 12px; color: #fff; background: var(--orange); box-shadow: 0 8px 28px rgba(255,91,19,.35); font-size: 29px; font-weight: 900; transition: .2s; }
.call-button:hover { transform: translateY(-3px); background: #ff6c24; }.call-button svg { width: 31px; height: 31px; }
.call-area p { margin: 15px 0 0; color: #cbd9ec; font-size: 14px; }

.site-footer { color: #b7c8e3; background: #061a42; border-top: 1px solid rgba(255,255,255,.16); }
.footer-inner { min-height: 88px; display: flex; align-items: center; gap: 18px; }
.footer-brand { color: #fff; font-size: 18px; font-weight: 800; }.footer-inner > span + span::before { content: "·"; margin-right: 18px; color: var(--orange); }.footer-inner p { margin-left: auto; font-size: 12px; }
.back-top { position: fixed; z-index: 90; right: 24px; bottom: 24px; width: 48px; height: 48px; border: 0; border-radius: 50%; color: #fff; background: var(--navy); box-shadow: var(--shadow); font-size: 22px; cursor: pointer; }

:focus-visible { outline: 3px solid #ff9a61; outline-offset: 3px; }

@media (max-width: 1050px) {
  .desktop-nav { gap: 22px; }
  .hero { min-height: auto; }
  .hero-content { grid-template-columns: 1fr; }
  .hero-copy { padding: 60px 0 40px; }
  .hero-media { min-height: 500px; margin: 0 calc((100vw - min(1320px, calc(100vw - 48px))) / -2); }
  .hero-media::after { background: linear-gradient(180deg, #fff 0, transparent 22%); }
  .scam-layout { grid-template-columns: 170px 1fr; gap: 30px; }
  .guide-steps { grid-template-columns: repeat(3, 1fr); row-gap: 25px; }.guide-step:nth-child(3) { border-right: 0; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 70px; }
  .section-inner, .header-inner, .hero-content { width: min(100% - 32px, var(--container)); }
  .header-inner { min-height: 68px; }.brand { font-size: 18px; }.brand-mark { width: 35px; height: 40px; }
  .desktop-nav { display: none; }.menu-toggle { display: flex; }
  .hero-copy { padding-top: 48px; }.hero h1 { font-size: clamp(43px, 13vw, 62px); }.hero-copy > p { font-size: 17px; }
  .hero-actions { flex-direction: column; }.button { width: 100%; }
  .hero-media { min-height: 350px; }.hero-media img { object-position: 66% center; }
  .rule-inner { padding: 18px 0; flex-wrap: wrap; gap: 10px 15px; }.rule-inner > span { width: 100%; }
  .section { padding: 76px 0; }.scam-layout { display: block; }.section-rail { display: none; }.mobile-heading { display: block; margin-bottom: 32px; }
  .scam-summary { min-height: 104px; grid-template-columns: 44px 1fr 22px; gap: 12px; }.scam-index { font-size: 31px; }.scam-icon, .expand-label { display: none; }.scam-title strong { font-size: 19px; }.scam-title small { font-size: 13px; }
  .scam-detail { margin: 0 0 20px; padding: 18px; grid-template-columns: 1fr; gap: 18px; }.red-flags { padding: 18px 0 0; border-top: 1px solid #cbd9ee; border-left: 0; }
  .guide-steps { margin-top: 38px; grid-template-columns: 1fr; gap: 10px; }.guide-step { min-height: 96px; padding: 15px 48px 15px 16px; flex-direction: row; gap: 14px; border: 1px solid var(--line) !important; border-radius: 12px; text-align: left; }.step-number { align-self: center; font-size: 30px; }.step-icon { width: 48px; height: 48px; margin: 0; flex: 0 0 auto; font-size: 18px; }.guide-step small { display: none; }.check { top: 50%; right: 14px; transform: translateY(-50%); }
  .big-rule { margin-top: 55px; }.big-rule > span { display: none; }.big-rule strong { font-size: clamp(34px, 10vw, 48px); letter-spacing: 0; }
  .help { padding-top: 68px; }.help-heading { align-items: flex-start; }.help-heading svg { flex: 0 0 auto; margin-top: 5px; }.help-heading h2 { text-align: left; }
  .help-steps { margin: 40px 0; grid-template-columns: 1fr; gap: 0; }.help-steps li { padding: 24px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }.help-steps li:last-child { border-bottom: 0; }
  .call-button { min-width: 0; width: 100%; }.footer-inner { padding: 24px 0; flex-wrap: wrap; gap: 6px 12px; }.footer-inner p { width: 100%; margin: 8px 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}