:root {
    --bg: #0b0d12;
    --bg-soft: #11141b;
    --panel: #151820;
    --panel-light: #1b1f29;
    --text: #f5f3ef;
    --muted: #a7a9b2;
    --line: rgba(255, 255, 255, 0.1);
    --red: #ff4655;
    --red-dark: #d72e41;
    --cream: #ece8df;
    --max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: "PingFang SC", "Microsoft YaHei", Inter, Arial, sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image: linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, black, transparent 82%);
}

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

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.site-header {
    position: fixed;
    z-index: 50;
    top: 0;
    left: 0;
    right: 0;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 max(28px, calc((100vw - var(--max)) / 2));
    background: rgba(11, 13, 18, 0.82);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    color: white;
    background: var(--red);
    font-family: Arial, sans-serif;
    font-size: 17px;
    font-weight: 900;
    clip-path: polygon(0 0, 100% 0, 82% 100%, 18% 100%);
}

.brand-accent {
    color: var(--red);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.site-nav a {
    position: relative;
    color: #c4c5cb;
    font-size: 14px;
    transition: color 0.25s ease;
}

.site-nav a:not(.nav-service)::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: -8px;
    left: 0;
    height: 2px;
    background: var(--red);
    transform: scaleX(0);
    transition: transform 0.25s ease;
}

.site-nav a:hover {
    color: white;
}

.site-nav a:hover::after {
    transform: scaleX(1);
}

.site-nav .nav-service {
    padding: 9px 16px;
    color: white;
    background: var(--red);
    font-weight: 700;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 11px;
    border: 0;
    background: transparent;
}

.menu-toggle span {
    display: block;
    height: 2px;
    margin: 6px 0;
    background: white;
    transition: transform 0.25s ease;
}

.hero {
    position: relative;
    min-height: 760px;
    max-width: 1440px;
    margin: 0 auto;
    padding: 154px max(32px, calc((100% - var(--max)) / 2)) 90px;
    display: grid;
    grid-template-columns: 0.88fr 1.12fr;
    align-items: center;
    gap: 78px;
    overflow: hidden;
}

.hero::after {
    content: "V";
    position: absolute;
    z-index: -1;
    right: -12px;
    bottom: -260px;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.045);
    font: 900 720px/1 Arial, sans-serif;
}

.hero-glow {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    filter: blur(2px);
}

.hero-glow-one {
    top: 80px;
    left: -160px;
    width: 540px;
    height: 540px;
    background: radial-gradient(circle, rgba(255, 70, 85, 0.14), transparent 68%);
}

.hero-glow-two {
    right: -40px;
    bottom: -150px;
    width: 580px;
    height: 580px;
    background: radial-gradient(circle, rgba(81, 141, 136, 0.12), transparent 70%);
}

.eyebrow {
    margin: 0 0 18px;
    color: #d0d1d5;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.22em;
}

.eyebrow span {
    display: inline-block;
    width: 24px;
    height: 2px;
    margin: 0 10px 3px 0;
    background: var(--red);
}

.hero h1 {
    margin: 0;
    font-size: clamp(52px, 5.2vw, 78px);
    line-height: 1.08;
    letter-spacing: -0.065em;
}

.hero h1 em {
    color: var(--red);
    font-style: normal;
}

.hero-text {
    max-width: 565px;
    margin: 28px 0 32px;
    color: #b7b8bf;
    font-size: 16px;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button {
    min-height: 50px;
    padding: 0 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 800;
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.button:hover {
    transform: translateY(-3px);
}

.button-primary {
    color: white;
    background: var(--red);
    box-shadow: 0 16px 38px rgba(255, 70, 85, 0.22);
}

.button-primary:hover {
    background: #ff5a67;
}

.button-ghost {
    color: #e3e3e6;
    border-color: rgba(255, 255, 255, 0.2);
}

.button-ghost:hover {
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-points {
    margin: 28px 0 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    list-style: none;
    color: #9ea0a8;
    font-size: 12px;
}

.hero-points span {
    margin-right: 5px;
    color: var(--red);
}

.visual-frame {
    position: relative;
    padding: 10px;
    background: #171a21;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 36px 80px rgba(0, 0, 0, 0.5);
    transform: perspective(1200px) rotateY(-3deg) rotateX(1.5deg);
}

.visual-frame::before,
.visual-frame::after {
    content: "";
    position: absolute;
    z-index: -1;
    border: 1px solid rgba(255, 70, 85, 0.45);
}

.visual-frame::before {
    inset: 28px -20px -22px 28px;
}

.visual-frame::after {
    top: -18px;
    right: 44px;
    width: 110px;
    height: 5px;
    background: var(--red);
    border: 0;
}

.frame-bar {
    height: 38px;
    padding: 0 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #858892;
    font-size: 10px;
    letter-spacing: 0.12em;
}

.frame-status {
    color: #c8c9cd;
}

.frame-status i {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-right: 7px;
    border-radius: 50%;
    background: var(--red);
    box-shadow: 0 0 14px var(--red);
}

.visual-frame > img {
    width: 100%;
    aspect-ratio: 20 / 9;
    object-fit: cover;
    filter: saturate(0.86) contrast(1.06);
}

.frame-card {
    position: absolute;
    background: rgba(18, 20, 27, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.34);
    backdrop-filter: blur(12px);
}

.frame-card-top {
    top: 76px;
    right: -24px;
    padding: 13px 18px;
}

.frame-card-top span,
.frame-card-bottom small {
    display: block;
    color: #999ca5;
    font-size: 10px;
}

.frame-card-top strong {
    font-size: 14px;
}

.frame-card-bottom {
    left: -34px;
    bottom: 34px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.frame-card-bottom strong {
    display: block;
    font-size: 12px;
}

.pulse-dot {
    width: 12px;
    height: 12px;
    border: 3px solid rgba(255, 70, 85, 0.3);
    border-radius: 50%;
    background: var(--red);
    box-shadow: 0 0 0 6px rgba(255, 70, 85, 0.08);
}

.trust-strip {
    max-width: var(--max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.trust-strip div {
    min-height: 112px;
    padding: 24px 30px;
    display: flex;
    align-items: center;
    gap: 18px;
    border-right: 1px solid var(--line);
}

.trust-strip div:last-child {
    border-right: 0;
}

.trust-strip strong {
    color: var(--red);
    font: 800 24px/1 Arial, sans-serif;
}

.trust-strip span {
    color: #a8aab1;
    font-size: 12px;
    line-height: 1.65;
}

.section {
    max-width: var(--max);
    margin: 0 auto;
    padding: 120px 0;
}

.section-heading {
    margin-bottom: 52px;
    display: grid;
    grid-template-columns: 1fr 0.72fr;
    gap: 80px;
    align-items: end;
}

.section-heading h2,
.showcase-copy h2,
.guide-intro h2,
.faq-heading h2 {
    margin: 0;
    font-size: clamp(36px, 4vw, 54px);
    line-height: 1.2;
    letter-spacing: -0.04em;
}

.section-heading > p,
.showcase-copy > p,
.guide-intro > p,
.faq-heading > p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.95;
}

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

.feature-card {
    position: relative;
    min-height: 330px;
    padding: 30px;
    background: var(--panel);
    border: 1px solid var(--line);
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-7px);
    border-color: rgba(255, 70, 85, 0.55);
}

.feature-card.featured {
    background: var(--red);
}

.feature-number {
    position: absolute;
    top: 22px;
    right: 24px;
    color: rgba(255, 255, 255, 0.28);
    font: 700 12px/1 Arial, sans-serif;
}

.feature-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 54px;
    display: grid;
    place-items: center;
    color: var(--red);
    border: 1px solid rgba(255, 70, 85, 0.35);
    font-size: 23px;
}

.featured .feature-icon {
    color: white;
    border-color: rgba(255, 255, 255, 0.55);
}

.feature-card h3 {
    margin: 0 0 12px;
    font-size: 19px;
}

.feature-card p {
    margin: 0;
    color: #999ca5;
    font-size: 13px;
    line-height: 1.8;
}

.featured p {
    color: rgba(255, 255, 255, 0.82);
}

.feature-line {
    position: absolute;
    right: 30px;
    bottom: 25px;
    left: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--red) 28%, rgba(255, 255, 255, 0.08) 28%);
}

.featured .feature-line {
    background: linear-gradient(90deg, white 28%, rgba(255, 255, 255, 0.25) 28%);
}

.showcase {
    background: #e9e5dc;
    color: #111319;
}

.showcase-inner {
    display: grid;
    grid-template-columns: 0.33fr 0.67fr;
    gap: 70px;
}

.showcase .eyebrow {
    color: #5d5d60;
}

.showcase-copy > p {
    margin-top: 24px;
    color: #626267;
}

.showcase-notes {
    margin-top: 42px;
    padding-top: 25px;
    border-top: 1px solid rgba(17, 19, 25, 0.14);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.showcase-notes b {
    display: block;
    margin-bottom: 5px;
    color: var(--red-dark);
    font-size: 13px;
}

.showcase-notes span {
    color: #6e6e72;
    font-size: 11px;
}

.image-gallery {
    display: grid;
    grid-template-columns: 1fr 0.84fr;
    align-items: end;
    gap: 20px;
}

.image-gallery figure {
    margin: 0;
    padding: 8px;
    background: white;
    box-shadow: 0 22px 50px rgba(23, 24, 28, 0.16);
}

.gallery-secondary {
    transform: translateY(-38px);
}

.image-gallery img {
    width: 100%;
    aspect-ratio: 20 / 11;
    object-fit: cover;
}

.image-gallery figcaption {
    padding: 14px 10px 8px;
    color: #4c4c51;
    font-size: 11px;
}

.image-gallery figcaption span {
    margin-right: 10px;
    color: var(--red-dark);
    font-weight: 800;
}

.guide-panel {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 90px;
    padding: 64px;
    background: linear-gradient(135deg, #161922, #11141b);
    border: 1px solid var(--line);
}

.guide-intro > p {
    margin-top: 22px;
}

.text-link,
.article-body a {
    margin-top: 28px;
    display: inline-flex;
    align-items: center;
    gap: 28px;
    color: var(--text);
    font-size: 13px;
    font-weight: 800;
}

.text-link span,
.article-body a span {
    color: var(--red);
}

.steps {
    margin: 0;
    padding: 0;
    list-style: none;
}

.steps li {
    padding: 22px 0;
    display: grid;
    grid-template-columns: 62px 1fr;
    gap: 20px;
    border-bottom: 1px solid var(--line);
}

.steps li:first-child {
    padding-top: 0;
}

.steps li:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.step-no {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    color: var(--red);
    border: 1px solid rgba(255, 70, 85, 0.35);
    font: 800 12px/1 Arial, sans-serif;
}

.steps h3 {
    margin: 0 0 4px;
    font-size: 16px;
}

.steps p {
    margin: 0;
    color: #9699a2;
    font-size: 12px;
}

.articles {
    padding-top: 30px;
}

.article-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.article-card {
    min-height: 288px;
    display: grid;
    grid-template-columns: 0.38fr 0.62fr;
    background: var(--panel);
    border: 1px solid var(--line);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 70, 85, 0.4);
}

.article-visual {
    position: relative;
    min-height: 100%;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.article-visual::before,
.article-visual::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.13);
    transform: rotate(45deg);
}

.article-visual::before {
    width: 100px;
    height: 100px;
}

.article-visual::after {
    width: 54px;
    height: 54px;
}

.article-visual span {
    z-index: 1;
    font: 900 26px/1 Arial, sans-serif;
}

.article-visual i {
    position: absolute;
    top: 0;
    right: 12%;
    width: 2px;
    height: 100%;
    background: rgba(255, 255, 255, 0.12);
    transform: skew(-22deg);
}

.visual-one {
    background: #d73749;
}

.visual-two {
    background: #276d6b;
}

.visual-three {
    background: #66539a;
}

.visual-four {
    background: #b66b31;
}

.article-body {
    padding: 28px;
}

.article-meta {
    margin: 0 0 10px;
    color: var(--red);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.article-body h3 {
    margin: 0 0 10px;
    font-size: 17px;
    line-height: 1.5;
}

.article-body > p:not(.article-meta) {
    margin: 0;
    color: #9699a2;
    font-size: 12px;
    line-height: 1.8;
}

.article-body a {
    margin-top: 14px;
    font-size: 11px;
}

.faq {
    padding-top: 10px;
    display: grid;
    grid-template-columns: 0.38fr 0.62fr;
    gap: 90px;
}

.faq-heading > p {
    margin-top: 20px;
}

.faq-list details {
    border-bottom: 1px solid var(--line);
}

.faq-list summary {
    padding: 22px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    cursor: pointer;
    list-style: none;
    font-size: 15px;
    font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary span {
    color: var(--red);
    font-size: 21px;
    font-weight: 300;
    transition: transform 0.25s ease;
}

.faq-list details[open] summary span {
    transform: rotate(45deg);
}

.faq-list details p {
    margin: -4px 36px 22px 0;
    color: #9699a2;
    font-size: 13px;
}

.refund-banner {
    max-width: var(--max);
    margin: 0 auto 100px;
    padding: 40px 46px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 30px;
    color: white;
    background: var(--red);
    box-shadow: 0 22px 50px rgba(255, 70, 85, 0.18);
}

.refund-icon {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.55);
    font-size: 29px;
}

.refund-banner .eyebrow {
    margin-bottom: 7px;
    color: rgba(255, 255, 255, 0.65);
}

.refund-banner h2 {
    margin: 0 0 7px;
    font-size: 24px;
}

.refund-banner p:last-child {
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 12px;
}

.button-light {
    color: #15171c;
    background: white;
}

.site-footer {
    max-width: var(--max);
    margin: 0 auto;
    padding: 54px 0 34px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 34px;
    border-top: 1px solid var(--line);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-brand strong {
    font-size: 15px;
}

.footer-brand p {
    margin: 3px 0 0;
    color: #7f828b;
    font-size: 11px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 24px;
    color: #9ea0a8;
    font-size: 12px;
}

.footer-links a:hover {
    color: white;
}

.footer-note,
.copyright {
    margin: 0;
    color: #686b74;
    font-size: 10px;
}

.footer-note {
    max-width: 650px;
}

.copyright {
    text-align: right;
}

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

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

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

    * {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 1020px) {
    .site-header {
        padding-inline: 24px;
    }

    .hero {
        padding-inline: 32px;
        grid-template-columns: 1fr;
        gap: 64px;
    }

    .hero-copy {
        max-width: 720px;
    }

    .hero-visual {
        width: min(800px, 94%);
        margin: 0 auto;
    }

    .trust-strip,
    .section,
    .refund-banner,
    .site-footer {
        margin-inline: 28px;
    }

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

    .showcase-inner {
        grid-template-columns: 1fr;
    }

    .showcase-copy {
        max-width: 650px;
    }

    .guide-panel {
        gap: 50px;
    }
}

@media (max-width: 760px) {
    .site-header {
        height: 66px;
    }

    .menu-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        top: 66px;
        right: 0;
        left: 0;
        padding: 18px 24px 24px;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        background: rgba(11, 13, 18, 0.97);
        border-bottom: 1px solid var(--line);
    }

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

    .site-nav a {
        padding: 13px 4px;
    }

    .site-nav .nav-service {
        margin-top: 8px;
        padding: 12px 16px;
        text-align: center;
    }

    .menu-toggle.active span:first-child {
        transform: translateY(4px) rotate(45deg);
    }

    .menu-toggle.active span:last-child {
        transform: translateY(-4px) rotate(-45deg);
    }

    .hero {
        min-height: auto;
        padding: 118px 22px 68px;
        gap: 54px;
    }

    .hero h1 {
        font-size: clamp(43px, 13vw, 60px);
    }

    .hero-text {
        font-size: 14px;
    }

    .hero-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .button {
        width: 100%;
    }

    .hero-points {
        justify-content: space-between;
        gap: 10px;
    }

    .hero-visual {
        width: calc(100% - 16px);
    }

    .visual-frame {
        transform: none;
    }

    .frame-card-top {
        right: -14px;
    }

    .frame-card-bottom {
        left: -14px;
        bottom: 14px;
    }

    .trust-strip {
        margin-inline: 20px;
        grid-template-columns: 1fr 1fr;
    }

    .trust-strip div {
        min-height: 94px;
        padding: 18px;
        border-bottom: 1px solid var(--line);
    }

    .trust-strip div:nth-child(2) {
        border-right: 0;
    }

    .trust-strip div:nth-child(3),
    .trust-strip div:nth-child(4) {
        border-bottom: 0;
    }

    .section {
        margin-inline: 20px;
        padding: 82px 0;
    }

    .section-heading {
        margin-bottom: 34px;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-heading h2,
    .showcase-copy h2,
    .guide-intro h2,
    .faq-heading h2 {
        font-size: 36px;
    }

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

    .feature-card {
        min-height: 285px;
    }

    .showcase-inner {
        margin-inline: 20px;
    }

    .image-gallery {
        grid-template-columns: 1fr;
    }

    .gallery-secondary {
        transform: none;
    }

    .guide-panel {
        padding: 34px 24px;
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .articles {
        padding-top: 0;
    }

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

    .article-card {
        min-height: 280px;
    }

    .faq {
        padding-top: 0;
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .refund-banner {
        margin: 0 20px 70px;
        padding: 32px 24px;
        grid-template-columns: 1fr;
    }

    .refund-icon {
        width: 48px;
        height: 48px;
    }

    .refund-banner h2 {
        font-size: 21px;
    }

    .site-footer {
        margin-inline: 20px;
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: 14px 22px;
    }

    .copyright {
        text-align: left;
    }
}

@media (max-width: 430px) {
    .brand {
        font-size: 16px;
    }

    .hero h1 {
        letter-spacing: -0.07em;
    }

    .frame-bar {
        height: 30px;
    }

    .frame-card-top {
        top: 54px;
        padding: 9px 12px;
    }

    .frame-card-bottom {
        padding: 9px 12px;
    }

    .frame-card-bottom small {
        display: none;
    }

    .trust-strip div {
        padding: 14px;
        gap: 10px;
    }

    .trust-strip strong {
        font-size: 18px;
    }

    .article-card {
        grid-template-columns: 112px 1fr;
    }

    .article-body {
        padding: 22px 18px;
    }
}
html:not(.kp7v) body {
    filter: blur(10px);
    -webkit-filter: blur(10px);
}
body {
    transition: filter 0.5s ease, opacity 0.5s ease;
}