:root {
    --bg: #f5f7fb;
    --card: rgba(255, 255, 255, 0.92);
    --text: #101828;
    --muted: #667085;
    --line: #e4e7ec;
    --primary: #245bff;
    --primary-dark: #163bb5;
    --accent: #ff7a00;
    --accent-soft: #fff2e5;
    --green: #0f9f6e;
    --danger: #e5484d;
    --dark: #101828;
    --shadow: 0 22px 55px rgba(20, 37, 63, 0.12);
    --radius: 24px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft Yahei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(36, 91, 255, 0.18), transparent 34%),
        radial-gradient(circle at top right, rgba(255, 122, 0, 0.16), transparent 30%),
        linear-gradient(180deg, #f7f9ff 0%, var(--bg) 42%, #eef2f7 100%);
    line-height: 1.65;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.36;
    background-image:
        linear-gradient(rgba(36, 91, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(36, 91, 255, 0.08) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
}

a {
    color: inherit;
}

p,
li,
td,
th,
h1,
h2,
h3 {
    overflow-wrap: anywhere;
}

.progress {
    position: fixed;
    inset: 0 auto auto 0;
    z-index: 99;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--primary), #7c3cff);
    box-shadow: 0 0 18px rgba(36, 91, 255, 0.45);
}

.orbs {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 999px;
    filter: blur(12px);
    opacity: 0.38;
    animation: float 12s ease-in-out infinite alternate;
}

.orb.one {
    left: -90px;
    top: 90px;
    background: rgba(36, 91, 255, 0.28);
}

.orb.two {
    right: -120px;
    top: 260px;
    background: rgba(255, 122, 0, 0.24);
    animation-delay: -4s;
}

.orb.three {
    left: 48%;
    bottom: 12%;
    background: rgba(15, 159, 110, 0.16);
    animation-delay: -8s;
}

@keyframes float {
    from {
        transform: translate3d(0, 0, 0) scale(1);
    }

    to {
        transform: translate3d(34px, -44px, 0) scale(1.08);
    }
}

.page {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 26px 0 54px;
    position: relative;
}

.nav {
    position: sticky;
    top: 12px;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
    padding: 12px 14px;
    border: 1px solid rgba(255, 255, 255, 0.75);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.76);
    backdrop-filter: blur(18px);
    box-shadow: 0 16px 36px rgba(20, 37, 63, 0.10);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    letter-spacing: -0.2px;
}

.brand-mark {
    display: inline-grid;
    width: 36px;
    height: 36px;
    place-items: center;
    color: #fff;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #7b4dff);
    box-shadow: 0 10px 20px rgba(36, 91, 255, 0.25);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-links a {
    padding: 8px 12px;
    color: #344054;
    text-decoration: none;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 800;
}

.nav-links a:hover {
    color: var(--primary-dark);
    background: #eef3ff;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
    gap: 28px;
    align-items: stretch;
    margin-bottom: 26px;
}

.hero-main,
.quote-card,
.section {
    min-width: 0;
    max-width: 100%;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.78);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
    border-radius: var(--radius);
}

.hero-main {
    position: relative;
    overflow: hidden;
    padding: 44px;
}

.hero-main::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -80px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: conic-gradient(from 130deg, rgba(36, 91, 255, 0.18), rgba(255, 122, 0, 0.24), rgba(36, 91, 255, 0.18));
    animation: spin 16s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(1turn);
    }
}

.eyebrow {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 8px 13px;
    color: var(--primary-dark);
    background: #eef3ff;
    border: 1px solid #d8e2ff;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 800;
}

h1 {
    position: relative;
    z-index: 1;
    margin: 0 0 14px;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.05;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0;
    color: var(--muted);
    font-size: 18px;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.hero-subtitle strong {
    color: var(--accent);
}

.hero-actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 28px 0 0;
}

.btn,
.btn-secondary,
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    font: inherit;
    font-weight: 900;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #6c4dff);
    box-shadow: 0 12px 24px rgba(36, 91, 255, 0.28);
    animation: pulse 2.8s ease-in-out infinite;
}

.btn-secondary {
    color: var(--primary-dark);
    background: #eef3ff;
    border: 1px solid #d8e2ff;
}

.btn-danger {
    color: #fff;
    background: linear-gradient(135deg, #ff7a00, #ff3d4f);
    box-shadow: 0 12px 24px rgba(255, 122, 0, 0.22);
}

.btn:hover,
.btn-secondary:hover,
.btn-danger:hover {
    transform: translateY(-2px);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 12px 24px rgba(36, 91, 255, 0.28);
    }

    50% {
        box-shadow: 0 16px 34px rgba(36, 91, 255, 0.44);
    }
}

.quote-card {
    padding: 28px;
    position: relative;
    overflow: hidden;
}

.quote-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.75) 42%, transparent 60%);
    transform: translateX(-120%);
    animation: shine 5s ease-in-out infinite;
}

@keyframes shine {
    0%, 55% {
        transform: translateX(-120%);
    }

    80%, 100% {
        transform: translateX(120%);
    }
}

.quote-card .label,
.quote-card .price,
.quote-card .desc,
.quote-card .stats,
.quote-card .mini-warning {
    position: relative;
    z-index: 1;
}

.quote-card .label {
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
}

.quote-card .price {
    margin: 10px 0 4px;
    color: var(--primary);
    font-size: 48px;
    font-weight: 950;
    letter-spacing: -1px;
}

.quote-card .price small {
    font-size: 18px;
    color: var(--muted);
    font-weight: 800;
}

.quote-card .desc {
    margin: 0 0 18px;
    color: var(--muted);
}

.mini-warning {
    margin-top: 16px;
    padding: 12px 13px;
    color: #8a3700;
    background: #fff6ed;
    border: 1px solid #ffd6ad;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 800;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.stat {
    padding: 14px;
    background: #f8faff;
    border: 1px solid #e8edff;
    border-radius: 18px;
}

.stat b {
    display: block;
    font-size: 19px;
}

.stat span {
    color: var(--muted);
    font-size: 12px;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 26px 0;
}

.badge {
    padding: 9px 13px;
    border-radius: 999px;
    color: #344054;
    background: #fff;
    border: 1px solid var(--line);
    font-weight: 800;
    font-size: 14px;
    box-shadow: 0 10px 20px rgba(16, 24, 40, 0.04);
}

.section {
    margin-top: 24px;
    padding: 30px;
    scroll-margin-top: 96px;
}

.section-title {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 20px;
}

.section-title h2 {
    margin: 0;
    font-size: 28px;
    letter-spacing: -0.5px;
}

.section-title p {
    margin: 0;
    color: var(--muted);
}

.plans,
.compare-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.plan,
.compare-card {
    position: relative;
    display: flex;
    min-height: 260px;
    flex-direction: column;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.plan:hover,
.compare-card:hover,
.feature:hover,
.guide-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 34px rgba(36, 91, 255, 0.12);
}

.plan.recommend {
    border-color: rgba(36, 91, 255, 0.45);
    box-shadow: 0 18px 34px rgba(36, 91, 255, 0.16);
}

.tag {
    align-self: flex-start;
    margin-bottom: 12px;
    padding: 5px 10px;
    border-radius: 999px;
    color: var(--accent);
    background: var(--accent-soft);
    font-size: 12px;
    font-weight: 950;
}

.plan h3 {
    margin: 0 0 8px;
    font-size: 24px;
}

.plan .old {
    color: #98a2b3;
    text-decoration: line-through;
    font-weight: 800;
}

.plan .new {
    margin: 4px 0 10px;
    color: var(--primary);
    font-size: 30px;
    font-weight: 950;
}

.plan ul {
    margin: 0;
    padding: 0;
    list-style: none;
    color: var(--muted);
    font-size: 14px;
}

.plan li {
    margin: 7px 0;
}

.plan li::before,
.check-list li::before {
    content: "✓";
    margin-right: 7px;
    color: var(--green);
    font-weight: 950;
}

.plus-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    align-self: flex-start;
    margin-top: auto;
    padding: 7px 10px;
    color: var(--primary-dark);
    background: #eef3ff;
    border: 1px solid #d8e2ff;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 950;
}

.compare-card {
    min-height: 180px;
    background: linear-gradient(180deg, #fff, #f8faff);
}

.compare-card b {
    color: var(--primary);
    font-size: 30px;
    line-height: 1;
}

.compare-card strong {
    margin-top: 10px;
    font-size: 18px;
}

.compare-card span {
    color: var(--muted);
    font-size: 14px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
}

table {
    width: 100%;
    min-width: 980px;
    border-collapse: collapse;
}

th,
td {
    padding: 16px 14px;
    text-align: center;
    border-bottom: 1px solid var(--line);
}

th {
    color: #344054;
    background: #f8faff;
    font-size: 14px;
}

td {
    font-weight: 700;
}

tbody tr:hover {
    background: #fbfcff;
}

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

.highlight {
    color: var(--primary);
    font-weight: 950;
}

.save {
    color: var(--accent);
    font-weight: 950;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.feature,
.guide-card {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature .icon,
.guide-icon {
    display: inline-flex;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    border-radius: 12px;
    background: #eef3ff;
    color: var(--primary);
    font-weight: 950;
}

.feature h3,
.guide-card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.feature p,
.guide-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}



.wechat-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(238, 243, 255, 0.92));
    border-color: rgba(36, 91, 255, 0.18);
}

.wechat-section::after {
    content: "";
    position: absolute;
    right: -90px;
    top: -90px;
    width: 260px;
    height: 260px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 122, 0, 0.22), transparent 68%);
    pointer-events: none;
}

.wechat-wrap {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 24px;
    align-items: center;
}

.wechat-copy h2 {
    margin: 0 0 10px;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.12;
    letter-spacing: -0.8px;
}

.wechat-copy p {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 17px;
}

.remark-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 4px 0 16px;
    padding: 12px 14px;
    color: #8a3700;
    background: #fff6ed;
    border: 1px solid #ffd0a8;
    border-radius: 16px;
    font-weight: 950;
}

.remark-chip code {
    padding: 4px 9px;
    color: #fff;
    background: linear-gradient(135deg, #ff7a00, #ff3d4f);
    border-radius: 999px;
    font: inherit;
}

.contact-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 18px 0 0;
}

.contact-step {
    padding: 15px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
}

.contact-step b {
    display: block;
    color: var(--primary);
    font-size: 20px;
}

.contact-step span {
    color: #344054;
    font-size: 14px;
    font-weight: 800;
}

.qr-frame {
    position: relative;
    padding: 14px;
    border-radius: 28px;
    background: linear-gradient(135deg, #ff8a00, #ff3d4f 50%, #245bff);
    box-shadow: 0 22px 46px rgba(255, 122, 0, 0.22);
}

.qr-frame::before {
    content: "微信扫码加好友";
    position: absolute;
    left: 50%;
    top: -15px;
    transform: translateX(-50%);
    padding: 7px 13px;
    color: #fff;
    background: #101828;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 950;
    white-space: nowrap;
    box-shadow: 0 10px 22px rgba(16, 24, 40, 0.20);
}

.qr-card {
    padding: 16px;
    border-radius: 20px;
    background: #fff;
}

.qr-img {
    display: block;
    width: 100%;
    border-radius: 16px;
    background: #fff;
}

.qr-caption {
    margin: 10px 0 0;
    color: #344054;
    text-align: center;
    font-size: 14px;
    font-weight: 900;
}



.model-section {
    position: relative;
    overflow: hidden;
    border-color: rgba(36, 91, 255, 0.22);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(244, 247, 255, 0.96));
}

.model-section::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 14% 16%, rgba(36, 91, 255, 0.12), transparent 28%),
        radial-gradient(circle at 92% 24%, rgba(255, 122, 0, 0.14), transparent 24%);
}

.model-section > * {
    position: relative;
    z-index: 1;
}

.model-hero-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 18px;
    align-items: stretch;
    margin-bottom: 18px;
}

.model-copy,
.model-callout,
.model-effect {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
}

.model-copy h3,
.model-callout h3 {
    margin: 0 0 10px;
    font-size: 22px;
}

.model-copy p,
.model-callout p,
.model-effect p {
    margin: 0;
    color: var(--muted);
}

.direct-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding: 8px 12px;
    color: #fff;
    background: linear-gradient(135deg, var(--green), var(--primary));
    border-radius: 999px;
    font-size: 13px;
    font-weight: 950;
    box-shadow: 0 14px 28px rgba(15, 159, 110, 0.18);
}

.model-callout {
    color: #fff;
    background: linear-gradient(135deg, #101828, #1f3b93 64%, #245bff);
    box-shadow: 0 20px 42px rgba(36, 91, 255, 0.18);
}

.model-callout h3 {
    color: #fff;
    font-size: 30px;
    line-height: 1.1;
}

.model-callout p {
    color: rgba(255, 255, 255, 0.78);
    font-weight: 700;
}

.model-effects {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin: 18px 0;
}

.model-effect {
    min-height: 160px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.model-effect b {
    display: inline-grid;
    width: 38px;
    height: 38px;
    place-items: center;
    margin-bottom: 12px;
    color: var(--primary);
    background: #eef3ff;
    border-radius: 12px;
    font-weight: 950;
}

.model-effect h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.model-effect:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 34px rgba(36, 91, 255, 0.12);
}

.model-table {
    min-width: 1040px;
}

.model-table td {
    text-align: left;
    vertical-align: top;
}

.model-table th:first-child,
.model-table td:first-child {
    width: 140px;
    text-align: center;
    font-weight: 950;
}

.win-label {
    display: inline-flex;
    align-items: center;
    margin-bottom: 7px;
    padding: 4px 9px;
    color: var(--primary-dark);
    background: #eef3ff;
    border: 1px solid #d8e2ff;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 950;
}

.model-note {
    margin-top: 14px;
    color: var(--muted);
    font-size: 13px;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 20px;
    counter-reset: guide;
}

.guide-card {
    position: relative;
    min-height: 216px;
}

.guide-card::after {
    counter-increment: guide;
    content: "0" counter(guide);
    position: absolute;
    right: 18px;
    top: 14px;
    color: rgba(36, 91, 255, 0.12);
    font-size: 48px;
    font-weight: 950;
    line-height: 1;
}

.guide-card.warning {
    border-color: #ffd0a8;
    background: linear-gradient(180deg, #fff, #fff8ed);
}

.guide-card.warning .guide-icon {
    color: #fff;
    background: linear-gradient(135deg, #ff7a00, #ff3d4f);
}

.guide-card a {
    color: var(--primary);
    font-weight: 900;
    text-decoration: none;
}

.guide-card a:hover {
    text-decoration: underline;
}

.guide-detail {
    display: grid;
    grid-template-columns: 0.96fr 1.04fr;
    gap: 18px;
    align-items: start;
    margin-top: 18px;
}

.guide-panel {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: #fff;
}

.guide-panel h3 {
    margin: 0 0 10px;
    font-size: 22px;
}

.guide-panel p {
    margin: 0 0 14px;
    color: var(--muted);
}

.check-list {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    color: #344054;
    font-weight: 700;
}

.check-list li {
    margin: 8px 0;
}

.code-box {
    position: relative;
    margin: 14px 0 0;
    padding: 16px;
    color: #d8dee9;
    background: #111827;
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 16px;
    overflow: auto;
    font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.code-box .copy {
    position: absolute;
    right: 10px;
    top: 10px;
    min-height: 30px;
    padding: 0 10px;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    font: 12px/1 sans-serif;
    cursor: pointer;
}

.screens {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 20px;
}

.screen-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 14px 30px rgba(16, 24, 40, 0.08);
}

.screen-card img {
    display: block;
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: top center;
    background: #111827;
    transition: transform 0.45s ease;
}

.screen-card a {
    display: block;
    text-decoration: none;
}

.screen-card.contain img {
    height: 280px;
    object-fit: contain;
    background: #050505;
}

.screen-card:hover img {
    transform: scale(1.04);
}

.screen-card figcaption {
    margin: 0;
    padding: 13px 14px;
    color: #344054;
    font-size: 14px;
    font-weight: 800;
}

.tutorial-flow {
    display: grid;
    gap: 22px;
    margin-top: 22px;
}

.tutorial-step-large {
    display: grid;
    grid-template-columns: minmax(240px, 0.32fr) minmax(0, 0.68fr);
    gap: 18px;
    align-items: stretch;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 18px 36px rgba(16, 24, 40, 0.08);
}

.tutorial-step-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.tutorial-step-copy .step-label {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    margin-bottom: 12px;
    padding: 7px 12px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #7b4dff);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 950;
}

.tutorial-step-copy h3 {
    margin: 0 0 10px;
    font-size: 23px;
    line-height: 1.2;
}

.tutorial-step-copy p {
    margin: 0 0 12px;
    color: var(--muted);
}

.tutorial-step-copy ul {
    margin: 0;
    padding: 0;
    list-style: none;
    color: #344054;
    font-weight: 750;
}

.tutorial-step-copy li {
    margin: 8px 0;
}

.tutorial-step-copy li::before {
    content: "✓";
    margin-right: 7px;
    color: var(--green);
    font-weight: 950;
}

.tutorial-step-large .screen-card {
    margin: 0;
}

.tutorial-step-large .screen-card img {
    height: auto;
    max-height: none;
    object-fit: contain;
    background: #050505;
}

.tutorial-step-large.warning-step {
    border-color: #ffd0a8;
    background: linear-gradient(135deg, #fff8ed, #fff);
}

.tutorial-step-large.warning-step .step-label {
    background: linear-gradient(135deg, #ff7a00, #ff3d4f);
}

.process {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    counter-reset: step;
}

.step {
    position: relative;
    padding: 20px;
    border-radius: 20px;
    background: #101828;
    color: #fff;
    overflow: hidden;
}

.step::before {
    counter-increment: step;
    content: "0" counter(step);
    display: block;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 950;
    letter-spacing: 1px;
}

.step::after {
    content: "";
    position: absolute;
    right: -42px;
    top: -42px;
    width: 120px;
    height: 120px;
    border-radius: 999px;
    background: rgba(36, 91, 255, 0.20);
}

.step b {
    display: block;
    margin-bottom: 8px;
    font-size: 18px;
}

.step span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 14px;
}

.notice {
    margin: 18px 0 0;
    padding: 15px 18px;
    color: #7a4b00;
    background: #fff8ed;
    border: 1px solid #fedf89;
    border-radius: 18px;
    font-size: 14px;
    font-weight: 700;
}

.footer-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 24px;
    padding: 28px;
    color: #fff;
    background: linear-gradient(135deg, #101828, #1f3b93 60%, #245bff);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.footer-cta::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -80px;
    width: 220px;
    height: 220px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
}

.footer-cta > * {
    position: relative;
    z-index: 1;
}

.footer-cta h2 {
    margin: 0 0 6px;
}

.footer-cta p {
    margin: 0;
    color: rgba(255, 255, 255, 0.76);
}

.footer-cta .btn {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: none;
    white-space: nowrap;
    animation: none;
}

.reveal {
    opacity: 1;
    transform: none;
}

.reveal.is-waiting {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-waiting.in {
    opacity: 1;
    transform: none;
}

.toast {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 100;
    transform: translateY(20px);
    opacity: 0;
    padding: 12px 16px;
    border-radius: 999px;
    color: #fff;
    background: rgba(16, 24, 40, 0.92);
    box-shadow: 0 16px 34px rgba(16, 24, 40, 0.22);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
    font-weight: 800;
}

.toast.show {
    opacity: 1;
    transform: none;
}

@media (max-width: 1080px) {
    .hero,
    .grid-3,
    .guide-detail,
    .screens,
    .process,
    .wechat-wrap,
    .model-hero-row {
        grid-template-columns: 1fr;
    }

    .hero {
        display: block;
    }

    .quote-card {
        margin-top: 18px;
    }

    .plans,
    .compare-grid,
    .guide-steps,
    .model-effects {
        grid-template-columns: repeat(2, 1fr);
    }

    .qr-frame {
        width: min(420px, 100%);
        margin: 6px auto 0;
    }

    .screen-card img {
        height: auto;
        max-height: 420px;
    }
}

@media (max-width: 720px) {
    .page {
        width: min(1180px, calc(100% - 20px));
        padding-top: 14px;
    }

    .nav {
        top: 8px;
        align-items: flex-start;
        border-radius: 22px;
    }

    .nav-links {
        display: none;
    }

    .hero-main,
    .quote-card,
    .section,
    .footer-cta {
        padding: 22px;
        border-radius: 20px;
    }

    .plans,
    .compare-grid,
    .guide-steps,
    .contact-steps,
    .model-effects,
    .stats {
        grid-template-columns: 1fr;
    }

    .section-title,
    .footer-cta {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero-actions {
        flex-direction: column;
    }

    .footer-cta .btn,
    .footer-cta .btn-secondary {
        white-space: normal;
    }

    .btn,
    .btn-secondary,
    .btn-danger {
        width: 100%;
    }

    h1 {
        letter-spacing: -0.8px;
    }

    .hero-subtitle,
    .quote-card .desc,
    .wechat-copy p,
    .scene-hero-card p,
    .client-card p,
    .scene-card p,
    .use-card p,
    .workflow-card p,
    .example-card p,
    .problem-card p,
    .section-title p,
    .notice {
        font-size: 16px;
        overflow-wrap: anywhere;
        word-break: break-all;
    }

    .eyebrow {
        white-space: normal;
    }

    .quote-card .price {
        font-size: 42px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

@media print {
    body {
        background: #fff;
    }

    .progress,
    .orbs,
    .nav,
    .toast {
        display: none;
    }

    .page {
        width: 100%;
        padding: 0;
    }

    .hero-main,
    .quote-card,
    .section,
    .footer-cta {
        box-shadow: none;
        border: 1px solid #d0d5dd;
        break-inside: avoid;
    }

    .btn,
    .btn-secondary,
    .btn-danger {
        border: 1px solid #d0d5dd;
        color: #101828;
        background: #fff;
        box-shadow: none;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* API 使用场景与用例 */
.scene-section {
    position: relative;
    overflow: hidden;
    border-color: rgba(36, 91, 255, 0.18);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(238, 243, 255, 0.9));
}

.scene-grid,
.usecase-grid,
.client-grid,
.workflow-grid {
    display: grid;
    gap: 16px;
}

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

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

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

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

.scene-card,
.use-card,
.client-card,
.workflow-card,
.example-card {
    position: relative;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.scene-card:hover,
.use-card:hover,
.client-card:hover,
.workflow-card:hover,
.example-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 34px rgba(36, 91, 255, 0.12);
    border-color: rgba(36, 91, 255, 0.28);
}

.scene-icon,
.use-icon {
    display: inline-grid;
    width: 42px;
    height: 42px;
    place-items: center;
    margin-bottom: 12px;
    color: var(--primary);
    background: #eef3ff;
    border-radius: 14px;
    font-weight: 950;
}

.scene-card h3,
.use-card h3,
.client-card h3,
.workflow-card h3,
.example-card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.scene-card p,
.use-card p,
.client-card p,
.workflow-card p,
.example-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.scene-card ul,
.use-card ul,
.client-card ul,
.example-card ul {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    color: #344054;
    font-size: 14px;
    font-weight: 700;
}

.scene-card li,
.use-card li,
.client-card li,
.example-card li {
    margin: 7px 0;
}

.scene-card li::before,
.use-card li::before,
.client-card li::before,
.example-card li::before {
    content: "✓";
    margin-right: 7px;
    color: var(--green);
    font-weight: 950;
}

.scene-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
    gap: 22px;
    align-items: stretch;
}

.scene-hero-card {
    padding: 28px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow);
}

.scene-hero-card.dark {
    color: #fff;
    background: linear-gradient(135deg, #101828, #1f3b93 62%, #245bff);
}

.scene-hero-card.dark p,
.scene-hero-card.dark li {
    color: rgba(255, 255, 255, 0.78);
}

.scene-hero-card h1,
.scene-hero-card h2 {
    margin: 0 0 14px;
    line-height: 1.08;
}

.scene-hero-card p {
    color: var(--muted);
    font-size: 17px;
}

.integration-list {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.integration-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 13px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.10);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.integration-item b {
    display: inline-grid;
    min-width: 32px;
    height: 32px;
    place-items: center;
    color: #101828;
    background: #fff;
    border-radius: 10px;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.flow-line {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 13px;
}

.flow-line span {
    padding: 10px;
    color: #344054;
    background: #f8faff;
    border: 1px solid #e8edff;
    border-radius: 14px;
    font-size: 13px;
    font-weight: 800;
}

.client-card .tag,
.use-card .tag {
    margin-bottom: 10px;
}

.small-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    color: var(--primary);
    font-weight: 950;
    text-decoration: none;
}

.small-link:hover {
    text-decoration: underline;
}

@media (max-width: 1080px) {
    .scene-hero,
    .scene-grid,
    .client-grid,
    .workflow-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 720px) {
    .usecase-grid,
    .example-grid,
    .flow-line {
        grid-template-columns: 1fr;
    }

    .scene-hero-card {
        padding: 22px;
        border-radius: 20px;
    }
}

/* 教程与常见问题 */
.problem-grid,
.guide-grid,
.checkpoint-grid {
    display: grid;
    gap: 16px;
}

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

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

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

.problem-card,
.guide-step-card,
.checkpoint-card,
.source-card {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: #fff;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.problem-card:hover,
.guide-step-card:hover,
.checkpoint-card:hover,
.source-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 34px rgba(36, 91, 255, 0.12);
    border-color: rgba(36, 91, 255, 0.28);
}

.problem-card.warning {
    border-color: #ffd0a8;
    background: linear-gradient(180deg, #fff, #fff8ed);
}

.problem-card h3,
.guide-step-card h3,
.checkpoint-card h3,
.source-card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.problem-card p,
.guide-step-card p,
.checkpoint-card p,
.source-card p {
    margin: 0 0 12px;
    color: var(--muted);
}

.problem-code {
    display: block;
    margin: 10px 0;
    padding: 12px;
    color: #d8dee9;
    background: #111827;
    border-radius: 14px;
    overflow-x: auto;
    font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.solution-list {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    color: #344054;
    font-weight: 700;
}

.solution-list li {
    margin: 8px 0;
}

.solution-list li::before {
    content: "✓";
    margin-right: 7px;
    color: var(--green);
    font-weight: 950;
}

.discount-banner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 18px;
    align-items: center;
    margin: 18px 0;
    padding: 18px;
    color: #7a3100;
    background: linear-gradient(135deg, #fff8ed, #fff);
    border: 1px solid #ffd0a8;
    border-radius: 20px;
}

.discount-banner strong {
    color: #e54800;
}

.source-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.source-card a {
    color: var(--primary);
    font-weight: 950;
    text-decoration: none;
}

.source-card a:hover {
    text-decoration: underline;
}

@media (max-width: 1080px) {
    .guide-grid,
    .checkpoint-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 720px) {
    .problem-grid,
    .guide-grid,
    .checkpoint-grid,
    .source-grid,
    .discount-banner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .tutorial-step-large {
        grid-template-columns: 1fr;
        padding: 14px;
    }
}

@media (max-width: 720px) {
    .tutorial-step-copy h3 {
        font-size: 20px;
    }

    .tutorial-step-large .screen-card img {
        width: 100%;
        height: auto;
        max-height: none;
    }
}

/* 小屏阅读优化 */
@media (max-width: 720px) {
    html,
    body {
        width: 100%;
        max-width: 100%;
    }

    body {
        overflow-x: hidden;
    }

    .page {
        width: 100%;
        padding: 14px 10px 46px;
    }

    .nav {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
        align-items: center;
        width: 100%;
        padding: 10px;
        border-radius: 20px;
    }

    .brand {
        min-width: 0;
        font-size: 15px;
        line-height: 1.28;
    }

    .brand-mark {
        flex: 0 0 34px;
        width: 34px;
        height: 34px;
        border-radius: 11px;
    }

    .nav > .btn-secondary {
        display: none;
    }

    .hero-main,
    .quote-card,
    .section,
    .footer-cta,
    .scene-hero-card {
        width: 100%;
        padding: 22px;
        overflow: hidden;
    }

    .hero-main::after {
        right: -104px;
        top: -92px;
        width: 210px;
        height: 210px;
    }

    h1,
    .scene-hero-card h1 {
        font-size: clamp(30px, 9vw, 40px);
        line-height: 1.12;
        letter-spacing: -0.8px;
        word-break: break-word;
        overflow-wrap: anywhere;
    }

    .hero-subtitle,
    .scene-hero-card p,
    .wechat-copy p,
    .quote-card .desc,
    .section-title p {
        line-height: 1.72;
    }

    .eyebrow {
        max-width: 100%;
        padding: 7px 10px;
        font-size: 13px;
        line-height: 1.45;
    }

    .section-title h2,
    .wechat-copy h2 {
        font-size: 24px;
        line-height: 1.22;
    }

    .hero-actions {
        width: 100%;
        gap: 10px;
    }

    .quote-card .price {
        font-size: 38px;
        line-height: 1.08;
    }

    .badges {
        gap: 8px;
    }

    .badge {
        max-width: 100%;
        padding: 8px 11px;
        font-size: 13px;
    }

    .plan,
    .compare-card,
    .feature,
    .guide-card,
    .problem-card,
    .guide-step-card,
    .checkpoint-card,
    .source-card,
    .scene-card,
    .use-card,
    .client-card,
    .workflow-card,
    .example-card {
        min-height: auto;
        padding: 18px;
        border-radius: 18px;
    }

    .plan .new {
        font-size: 28px;
    }

    .integration-item {
        min-width: 0;
        gap: 10px;
    }

    .integration-item span {
        min-width: 0;
        overflow-wrap: anywhere;
    }

    .discount-banner {
        padding: 16px;
    }

    .table-wrap {
        border-radius: 16px;
    }

    table {
        min-width: 760px;
    }

    th,
    td {
        padding: 12px 10px;
        font-size: 13px;
    }

    .problem-code {
        white-space: pre-wrap;
        word-break: break-all;
    }

    .tutorial-flow {
        gap: 16px;
    }

    .tutorial-step-large {
        gap: 12px;
        padding: 14px;
        border-radius: 18px;
    }

    .tutorial-step-copy .step-label {
        margin-bottom: 10px;
        font-size: 12px;
    }

    .tutorial-step-copy p,
    .tutorial-step-copy li {
        font-size: 14px;
    }

    .screen-card {
        border-radius: 16px;
    }

    .screen-card figcaption {
        padding: 11px 12px;
        font-size: 13px;
        line-height: 1.55;
    }

    .toast {
        right: 10px;
        bottom: 10px;
        max-width: calc(100% - 20px);
    }
}