:root {
    --brand: rgb(255, 80, 0);
    --brand-dark: #E85A00;
    --light-orange: #FFF3EC;
    --page-bg: #F6F6F6;
    --text: #222222;
    --muted: #555555;
    --soft: #777777;
    --footer: #1F1F1F;
    --footer-light: #D8D8D8;
    --line: rgba(0,0,0,.08);
    --shadow: 0 14px 34px rgba(0,0,0,.08);
    --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: #fff;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
main { background: #fff; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 6px 20px rgba(0,0,0,.04);
}
.header-shell {
    width: min(1200px, calc(100% - 28px));
    margin: 0 auto;
    min-height: 64px;
    display: grid;
    grid-template-columns: 58px 1fr 88px;
    align-items: center;
    gap: 8px;
}
.brand { justify-self: center; display: inline-flex; align-items: center; }
.brand img { width: 116px; max-height: 42px; object-fit: contain; }
.menu-toggle {
    width: 42px;
    height: 42px;
    border: 0;
    background: #fff;
    border-radius: 12px;
    box-shadow: inset 0 0 0 1px var(--line);
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}
.menu-toggle span { width: 20px; height: 2px; background: #222; border-radius: 99px; }
.desktop-nav { display: none; }
.nav-link {
    color: #333;
    font-weight: 600;
    font-size: 15px;
    padding: 8px 6px;
    white-space: nowrap;
    position: relative;
}
.nav-link.is-active, .nav-link:hover { color: var(--brand); }
.nav-link.is-active::after {
    content: "";
    position: absolute;
    left: 8px;
    right: 8px;
    bottom: 0;
    height: 3px;
    background: var(--brand);
    border-radius: 999px;
}
.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand);
    color: #fff;
    border-radius: 999px;
    font-weight: 800;
    letter-spacing: .02em;
    box-shadow: 0 12px 24px rgba(255,80,0,.26);
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.main-btn:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 14px 28px rgba(255,80,0,.32); }
.header-action { justify-self: end; min-width: 82px; height: 34px; padding: 0 12px; font-size: 13px; }
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.52);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
    z-index: 80;
}
.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 84vw;
    max-width: 320px;
    height: 100vh;
    background: #fff;
    z-index: 90;
    transform: translateX(-105%);
    transition: transform .28s ease;
    box-shadow: 24px 0 48px rgba(0,0,0,.22);
    overflow-y: auto;
}
.drawer-open { overflow: hidden; }
.drawer-open .drawer-overlay { opacity: 1; pointer-events: auto; }
.drawer-open .mobile-drawer { transform: translateX(0); }
.drawer-head {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    border-bottom: 1px solid var(--line);
}
.drawer-logo img { width: 118px; max-height: 44px; object-fit: contain; }
.drawer-close {
    border: 0;
    background: var(--light-orange);
    color: var(--brand);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
}
.drawer-nav { display: grid; padding: 16px; gap: 10px; }
.drawer-link {
    padding: 13px 14px;
    border-radius: 14px;
    color: #333;
    font-weight: 700;
    background: #fafafa;
    border: 1px solid var(--line);
}
.drawer-link.is-active { color: var(--brand); background: var(--light-orange); border-color: rgba(255,80,0,.18); }
.hero-section {
    background:
      linear-gradient(90deg, rgba(0,0,0,.78), rgba(0,0,0,.58)),
      url('banner.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 34px 0 42px;
    color: #fff;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    width: min(1200px, calc(100% - 30px));
    margin: 0 auto;
    text-align: center;
}
.hero-image { order: 1; position: relative; z-index: 2; }
.hero-image img {
    width: 100%;
    max-height: 320px;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 28px 34px rgba(0,0,0,.35));
    margin: 0 auto;
}
.hero-content { order: 2; position: relative; z-index: 2; max-width: 620px; margin: 0 auto; }
.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 999px;
    color: #fff;
    background: rgba(255,80,0,.18);
    border: 1px solid rgba(255,255,255,.18);
    margin-bottom: 12px;
    font-weight: 700;
}
.hero-title {
    color: rgb(255, 80, 0);
    font-size: clamp(34px, 8vw, 66px);
    line-height: 1.05;
    margin: 0 0 16px;
    letter-spacing: -1px;
}
.hero-desc {
    color: #ffffff;
    font-size: 16px;
    margin: 0 auto 22px;
    max-width: 620px;
}
.hero-note { color: #E8E8E8; font-size: 13px; margin-top: 14px; }
.hero-content .main-btn { min-height: 46px; padding: 0 26px; font-size: 16px; }
.section { padding: 54px 0; }
.section.alt { background: var(--page-bg); }
.section.orange-soft { background: linear-gradient(180deg, #fff, var(--light-orange)); }
.container { width: min(1200px, calc(100% - 30px)); margin: 0 auto; }
.section-head { max-width: 820px; margin-bottom: 26px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
    display: inline-flex;
    color: var(--brand);
    background: var(--light-orange);
    border-radius: 999px;
    padding: 4px 12px;
    font-weight: 800;
    font-size: 13px;
    margin-bottom: 10px;
}
h1, h2, h3 { line-height: 1.25; }
h1 { font-size: clamp(30px, 5vw, 52px); margin: 0 0 16px; }
h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 10px; }
h3 { margin: 0 0 10px; }
p { margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 17px; }
.text-link {
    color: var(--brand);
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
}
.text-link::after { content: "›"; font-size: 20px; line-height: 1; }
.quick-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.quick-card {
    background: #fff;
    border: 1px solid rgba(255,80,0,.12);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 8px 22px rgba(255,80,0,.06);
}
.quick-card strong { display: block; color: var(--brand); font-size: 17px; margin-bottom: 4px; }
.quick-card span { color: var(--muted); font-size: 14px; }
.feature-grid, .category-grid, .service-grid, .faq-grid, .info-grid, .two-grid, .three-grid { display: grid; gap: 20px; }
.feature-grid, .category-grid, .service-grid, .faq-grid, .info-grid, .two-grid, .three-grid { grid-template-columns: 1fr; }
.card, .feature-card, .category-card, .service-card, .faq-item, .notice-card, .step-card, .contact-card {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-body, .feature-body, .category-body, .service-card, .faq-item, .notice-card, .step-card, .contact-card { padding: 20px; }
.card-image, .feature-image, .category-image, .visual-box {
    background: linear-gradient(135deg, #fff, var(--light-orange));
    min-height: 128px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    overflow: hidden;
}
.card-image img, .feature-image img, .category-image img, .visual-box img {
    width: 100%;
    max-height: 190px;
    object-fit: contain;
    object-position: center;
}
.feature-card.highlight { background: #111; color: #fff; }
.feature-card.highlight .feature-body p { color: #E8E8E8; }
.feature-card.highlight .feature-image { background: linear-gradient(135deg, rgba(255,80,0,.22), rgba(255,255,255,.05)); }
.feature-body p, .category-body p, .service-card p, .faq-item p, .notice-card p, .step-card p, .contact-card p { color: var(--muted); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.tag {
    display: inline-flex;
    color: var(--brand);
    background: var(--light-orange);
    border: 1px solid rgba(255,80,0,.14);
    border-radius: 999px;
    padding: 4px 10px;
    font-weight: 700;
    font-size: 13px;
}
.app-band {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
    background: #fff;
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
    padding: 22px;
}
.app-band .visual-box { border-radius: 20px; min-height: auto; }
.app-band .visual-box img { max-height: 340px; }
.mini-list { display: grid; gap: 12px; margin: 16px 0; }
.mini-list div {
    background: var(--light-orange);
    border-radius: 14px;
    padding: 12px 14px;
    color: #333;
    border: 1px solid rgba(255,80,0,.10);
}
.warning-band {
    background: #111;
    color: #fff;
    border-radius: 24px;
    padding: 24px;
    display: grid;
    gap: 14px;
    border: 1px solid rgba(255,255,255,.08);
    box-shadow: 0 16px 34px rgba(0,0,0,.16);
}
.warning-band h2, .warning-band h3 { color: var(--brand); }
.warning-band p { color: #E8E8E8; }
.page-hero {
    background: linear-gradient(135deg, #121212, #070707 58%, #2a1308);
    color: #fff;
    padding: 56px 0 50px;
}
.page-hero .container { display: grid; gap: 18px; }
.page-hero h1 { color: var(--brand); }
.page-hero p { color: #E8E8E8; max-width: 820px; font-size: 17px; }
.breadcrumb { color: #D8D8D8; font-size: 14px; }
.breadcrumb a { color: #fff; }
.content-prose { max-width: 940px; }
.content-prose p { color: var(--muted); margin-bottom: 14px; }
.content-prose h2 { margin-top: 26px; }
.content-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: center;
}
.side-panel {
    background: var(--light-orange);
    border-radius: 22px;
    padding: 20px;
    border: 1px solid rgba(255,80,0,.14);
}
.side-panel h3 { color: var(--brand); }
.side-panel ul, .clean-list { margin: 0; padding-left: 20px; color: var(--muted); }
.side-panel li, .clean-list li { margin-bottom: 8px; }
.steps { counter-reset: step; display: grid; gap: 16px; }
.step-card { position: relative; }
.step-card::before {
    counter-increment: step;
    content: counter(step);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin-bottom: 10px;
}
.table-like { display: grid; gap: 10px; }
.table-row {
    display: grid;
    gap: 8px;
    padding: 14px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid var(--line);
}
.table-row strong { color: var(--brand); }
.site-footer {
    background: var(--footer);
    color: var(--footer-light);
    padding-top: 44px;
}
.footer-shell {
    width: min(1200px, calc(100% - 30px));
    margin: 0 auto;
    display: grid;
    gap: 30px;
}
.footer-brand img { width: 132px; max-height: 48px; object-fit: contain; margin-bottom: 12px; }
.footer-brand p { color: #D8D8D8; max-width: 560px; }
.footer-links { display: grid; grid-template-columns: 1fr; gap: 22px; }
.footer-links h3 { color: #fff; font-size: 16px; margin-bottom: 12px; }
.footer-links a { display: block; color: #D8D8D8; margin-bottom: 8px; }
.footer-links a:hover { color: var(--brand); }
.footer-bottom {
    margin-top: 34px;
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 16px 15px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
    text-align: center;
    color: #bdbdbd;
    font-size: 14px;
}
@media (min-width: 640px) {
    .quick-grid { grid-template-columns: repeat(3, 1fr); }
    .feature-grid, .category-grid, .service-grid, .faq-grid, .info-grid, .three-grid { grid-template-columns: repeat(2, 1fr); }
    .two-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-links { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
    .header-shell {
        min-height: 76px;
        grid-template-columns: 150px minmax(0, 1fr) 116px;
        gap: 20px;
    }
    .menu-toggle { display: none; }
    .brand { justify-self: start; }
    .brand img { width: 136px; max-height: 50px; }
    .desktop-nav { display: flex; justify-content: center; align-items: center; gap: 10px; min-width: 0; }
    .header-action { height: 42px; min-width: 104px; font-size: 15px; padding: 0 18px; }
    .hero-section { padding: 44px 0 58px; }
    .hero-inner {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        text-align: left;
    }
    .hero-image { order: 1; }
    .hero-content { order: 2; margin: 0; }
    .hero-image img { max-height: 520px; }
    .hero-desc { margin-left: 0; }
    .quick-grid { grid-template-columns: repeat(9, 1fr); gap: 12px; }
    .quick-card { padding: 14px 12px; }
    .quick-card strong { font-size: 15px; }
    .quick-card span { font-size: 12px; }
    .feature-grid { grid-template-columns: 1.2fr .8fr .8fr; }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .service-grid, .faq-grid, .info-grid, .three-grid { grid-template-columns: repeat(3, 1fr); }
    .app-band { grid-template-columns: .95fr 1.05fr; padding: 30px; }
    .content-split { grid-template-columns: 1.08fr .92fr; }
    .footer-shell { grid-template-columns: 1fr 1.2fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; width: 100%; }
}
@media (max-width: 360px) {
    .header-shell { width: min(100% - 18px, 1200px); grid-template-columns: 44px 1fr 78px; }
    .brand img { width: 98px; }
    .header-action { min-width: 74px; padding: 0 9px; font-size: 12px; height: 32px; }
}