:root {
    --blue: #70bdf2;
    --blue-dark: #2378ad;
    --cream: #fff4c7;
    --orange: #f7a768;
    --orange-soft: #ffe1c7;
    --mint: #dff7ec;
    --ink: #263545;
    --muted: #657587;
    --line: #e7edf3;
    --white: #ffffff;
    --shadow: 0 18px 45px rgba(32, 92, 140, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
}

* {
    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(--ink);
    background:
        radial-gradient(circle at 10% 0%, rgba(112, 189, 242, 0.18), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(247, 167, 104, 0.18), transparent 28%),
        linear-gradient(180deg, #f8fcff 0%, #fffaf1 100%);
    line-height: 1.75;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(226, 236, 245, 0.85);
}

.top-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 7px 18px;
    font-size: 13px;
    color: var(--muted);
    background: linear-gradient(90deg, rgba(255, 244, 199, .72), rgba(223, 247, 236, .72));
}

.top-note strong {
    color: var(--blue-dark);
    word-break: break-all;
}

.nav-wrap {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 18px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--orange));
    box-shadow: 0 12px 24px rgba(112, 189, 242, .25);
    letter-spacing: .5px;
}

.brand-text {
    font-size: 17px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.main-nav a {
    padding: 9px 13px;
    border-radius: 999px;
    color: #405468;
    font-size: 15px;
    transition: .2s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--blue-dark);
    background: rgba(112, 189, 242, .14);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 40px;
    border: 0;
    background: var(--cream);
    border-radius: 14px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 21px;
    height: 2px;
    margin: 5px auto;
    background: var(--ink);
    border-radius: 2px;
}

.hero,
.page-hero {
    width: min(1180px, calc(100% - 36px));
    margin: 42px auto 26px;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
    gap: 34px;
    align-items: center;
}

.page-hero {
    grid-template-columns: minmax(0, .9fr) minmax(300px, .7fr);
}

.hero-card,
.page-hero-card,
.panel,
.card,
.feature-card,
.feedback-card,
.faq-item,
.form-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(231, 237, 243, .95);
    box-shadow: var(--shadow);
    border-radius: var(--radius-lg);
}

.hero-card,
.page-hero-card {
    padding: clamp(28px, 4vw, 54px);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(112, 189, 242, .14);
    color: var(--blue-dark);
    font-weight: 700;
    font-size: 14px;
}

.eyebrow::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--orange);
}

h1,
h2,
h3 {
    line-height: 1.25;
    margin: 0;
}

h1 {
    margin-top: 16px;
    font-size: clamp(34px, 6vw, 62px);
    letter-spacing: -1px;
}

h2 {
    font-size: clamp(26px, 4vw, 42px);
}

h3 {
    font-size: 21px;
}

.lead {
    color: var(--muted);
    font-size: clamp(16px, 2vw, 19px);
    margin: 20px 0 0;
}

.hero-actions,
.card-actions,
.form-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    font-weight: 800;
    border: 1px solid transparent;
    transition: .2s ease;
    cursor: pointer;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--blue-dark), var(--blue));
    box-shadow: 0 12px 26px rgba(35, 120, 173, .22);
}

.btn-light {
    color: var(--blue-dark);
    background: var(--white);
    border-color: rgba(112, 189, 242, .35);
}

.btn-warm {
    color: #87450b;
    background: var(--cream);
    border-color: rgba(247, 167, 104, .35);
}

.btn:hover {
    transform: translateY(-1px);
}

.hero-visual,
.page-visual {
    position: relative;
    padding: 16px;
}

.hero-visual img,
.page-visual img {
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow);
}

.float-badge {
    position: absolute;
    right: 0;
    bottom: 6%;
    padding: 12px 16px;
    border-radius: 18px;
    color: #7a430d;
    background: var(--cream);
    box-shadow: 0 14px 24px rgba(247, 167, 104, .16);
    font-weight: 800;
}

.section {
    width: min(1180px, calc(100% - 36px));
    margin: 28px auto;
    padding: clamp(30px, 4vw, 54px) 0;
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 24px;
}

.section-head p {
    max-width: 680px;
    color: var(--muted);
    margin: 12px 0 0;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.feature-card,
.feedback-card,
.faq-item,
.form-card,
.panel {
    padding: 24px;
}

.card {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.card img,
.feature-card img {
    width: 100%;
    min-height: 130px;
    object-fit: cover;
    border-radius: 22px;
    background: #f5fbff;
}

.tag-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    color: #3d617a;
    background: rgba(112, 189, 242, .14);
}

.tag.orange {
    color: #875018;
    background: rgba(247, 167, 104, .18);
}

.tag.green {
    color: #386a50;
    background: rgba(88, 190, 135, .16);
}

.card p,
.feature-card p,
.feedback-card p,
.faq-item p,
.panel p {
    color: var(--muted);
    margin: 0;
}

.soft-band {
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255, 244, 199, .78), rgba(223, 247, 236, .78));
    padding: clamp(24px, 4vw, 46px);
}

.list-check {
    padding: 0;
    margin: 18px 0 0;
    list-style: none;
}

.list-check li {
    position: relative;
    padding-left: 30px;
    margin: 10px 0;
    color: #405468;
}

.list-check li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--mint);
    color: #267a54;
    font-size: 13px;
    font-weight: 900;
}

.timeline {
    display: grid;
    gap: 14px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 18px;
    border-radius: 20px;
    background: var(--white);
    border: 1px solid var(--line);
}

.time-pill {
    display: inline-grid;
    place-items: center;
    min-height: 38px;
    border-radius: 14px;
    background: rgba(247, 167, 104, .18);
    color: #8a5019;
    font-weight: 900;
}

.video-card {
    overflow: hidden;
    padding: 0;
}

.video-thumb {
    position: relative;
}

.video-thumb::after {
    content: "▶";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: var(--blue-dark);
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 10px 24px rgba(35, 120, 173, .18);
    font-size: 22px;
    padding-left: 4px;
}

.video-card .card-body {
    padding: 22px;
}

.feedback-card {
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.feedback-card img {
    width: 62px;
    height: 62px;
    border-radius: 22px;
    background: var(--cream);
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item button {
    all: unset;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    cursor: pointer;
    font-weight: 900;
    color: var(--ink);
}

.faq-item button::after {
    content: "+";
    color: var(--blue-dark);
    font-size: 24px;
    line-height: 1;
}

.faq-item.open button::after {
    content: "−";
}

.faq-item .answer {
    display: none;
    margin-top: 12px;
}

.faq-item.open .answer {
    display: block;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--white);
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th,
td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

th {
    background: #f5fbff;
    color: var(--blue-dark);
}

tr:last-child td {
    border-bottom: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.form-field {
    display: grid;
    gap: 8px;
}

.form-field.full {
    grid-column: 1 / -1;
}

label {
    font-weight: 800;
    color: #435568;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fbfdff;
    padding: 13px 14px;
    font: inherit;
    color: var(--ink);
}

textarea {
    min-height: 128px;
    resize: vertical;
}

.notice {
    padding: 18px;
    border-radius: 20px;
    background: rgba(255, 244, 199, .72);
    color: #704613;
    border: 1px solid rgba(247, 167, 104, .24);
}

.site-footer {
    margin-top: 50px;
    background: #263545;
    color: rgba(255, 255, 255, .84);
}

.footer-grid {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
    padding: 42px 0;
    display: grid;
    grid-template-columns: 1.25fr .7fr 1fr;
    gap: 24px;
}

.footer-grid strong {
    color: #fff;
    display: block;
    margin-bottom: 10px;
}

.footer-grid a {
    display: block;
    margin: 7px 0;
    color: rgba(255,255,255,.84);
}

.footer-grid p {
    margin: 0 0 8px;
    color: rgba(255,255,255,.72);
}

.domain-line {
    word-break: break-all;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    text-align: center;
    padding: 17px;
    font-size: 14px;
    color: rgba(255,255,255,.66);
}

@media (max-width: 980px) {
    .hero,
    .page-hero,
    .grid-3,
    .grid-4,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .section-head {
        display: block;
    }

    .nav-toggle {
        display: inline-block;
    }

    .main-nav {
        position: absolute;
        left: 18px;
        right: 18px;
        top: 112px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 22px;
        box-shadow: var(--shadow);
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav a {
        text-align: center;
    }
}

@media (max-width: 640px) {
    .top-note {
        flex-wrap: wrap;
        line-height: 1.35;
    }

    .nav-wrap,
    .hero,
    .page-hero,
    .section,
    .footer-grid {
        width: min(100% - 24px, 1180px);
    }

    .hero-card,
    .page-hero-card,
    .soft-band,
    .card,
    .feature-card,
    .feedback-card,
    .faq-item,
    .form-card,
    .panel {
        border-radius: 22px;
    }

    .brand-text {
        display: none;
    }

    .form-grid,
    .feedback-card {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .float-badge {
        position: static;
        margin-top: 12px;
        display: inline-block;
    }
}