/* tokenim 官网 — 扁平轻盈企业风，非模板化结构 */

:root {
    --tk-c-pri: #0d2137;
    --tk-c-pri-soft: #1a3554;
    --tk-c-acc: #2380e8;
    --tk-c-acc-fade: rgba(35, 128, 232, 0.08);
    --tk-c-white: #fff;
    --tk-c-bg: #fafbfc;
    --tk-c-bg-alt: #f4f6f9;
    --tk-c-txt: #2c3e50;
    --tk-c-txt-mute: #6b7c8f;
    --tk-c-line: #e8ecf0;
    --tk-w-max: 1120px;
    --tk-w-xl: 1280px;
    --tk-hdr-h: 68px;
    --tk-hdr-h-s: 60px;
    --tk-pad: 80px;
    --tk-pad-s: 48px;
    --tk-ease: 0.2s ease;
    --tk-ease-out: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--tk-c-txt);
    background: var(--tk-c-white);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ——— 顶部导航 ——— */
.tk-hdr {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--tk-hdr-h);
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: height var(--tk-ease), border-color var(--tk-ease), box-shadow var(--tk-ease);
}
.tk-hdr.is-scrolled {
    height: var(--tk-hdr-h-s);
    border-bottom-color: var(--tk-c-line);
    box-shadow: 0 2px 12px rgba(13,33,55,0.04);
}
.tk-hdr__wrap {
    max-width: var(--tk-w-max);
    margin: 0 auto;
    padding: 0 20px;
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.tk-hdr__brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.tk-hdr__logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}
.tk-hdr__name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    letter-spacing: -0.03em;
}
.tk-hdr__brand:hover .tk-hdr__name { color: var(--tk-c-acc); }
.tk-hdr__links {
    display: flex;
    gap: 28px;
}
.tk-hdr__links a {
    font-size: 0.9rem;
    color: var(--tk-c-txt-mute);
    transition: color var(--tk-ease);
}
.tk-hdr__links a:hover { color: var(--tk-c-acc); }
.tk-hdr__tgl {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
    background: none;
    border: none;
    cursor: pointer;
}
.tk-hdr__tgl span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--tk-c-pri);
    transition: var(--tk-ease);
}
.tk-hdr__tgl[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.tk-hdr__tgl[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.tk-hdr__tgl[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单：遮罩 + 全屏弹窗 */
.tk-nav__backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9998;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    transition: opacity var(--tk-ease);
    pointer-events: none;
}
@media (max-width: 880px) {
    .tk-hdr { overflow: visible; }
    .tk-hdr.is-nav-open { z-index: 10000; }
    .tk-nav__backdrop.is-open {
        display: block;
        opacity: 1;
        pointer-events: auto;
    }
    .tk-hdr__logo { width: 28px; height: 28px; }
    .tk-hdr__nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        min-height: 100vh;
        min-height: 100dvh;
        z-index: 9999;
        background: var(--tk-c-white);
        padding: calc(var(--tk-hdr-h) + 20px) 24px 40px;
        padding-bottom: calc(40px + env(safe-area-inset-bottom));
        transform: translateX(100%);
        transition: transform var(--tk-ease);
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
    .tk-hdr__nav.is-open { transform: translateX(0); }
    .tk-hdr__links { flex-direction: column; gap: 0; }
    .tk-hdr__links li { border-bottom: 1px solid var(--tk-c-line); }
    .tk-hdr__links a {
        display: flex;
        align-items: center;
        padding: 18px 0;
        font-size: 1.0625rem;
        min-height: 56px;
        line-height: 1.3;
        -webkit-tap-highlight-color: transparent;
        transition: background var(--tk-ease), color var(--tk-ease);
    }
    .tk-hdr__links a:active { background: var(--tk-c-bg); }
    .tk-hdr__tgl {
        display: flex;
        z-index: 10000;
        position: relative;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
    }
}

/* ——— Hero 首屏 ——— */
.tk-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.tk-hero__bg {
    position: absolute;
    inset: 0;
}
.tk-hero__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.tk-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(13,33,55,0.25) 0%, rgba(13,33,55,0.55) 50%, rgba(13,33,55,0.4) 100%);
}
.tk-hero__inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--tk-w-max);
    margin: 0 auto;
    padding: calc(var(--tk-hdr-h) + 48px) 24px 64px;
    gap: 48px;
}
.tk-hero__cnt {
    flex: 1;
    max-width: 520px;
}
.tk-hero__label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255,255,255,0.75);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.tk-hero__cnt h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 500;
    color: var(--tk-c-white);
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}
.tk-hero__txt {
    font-size: 1.0625rem;
    font-weight: 400;
    color: rgba(255,255,255,0.88);
    line-height: 1.6;
    margin-bottom: 32px;
}
.tk-hero__btns { display: flex; gap: 14px; }
.tk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 26px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--tk-ease);
    -webkit-tap-highlight-color: transparent;
}
.tk-btn--pri {
    background: var(--tk-c-white);
    color: var(--tk-c-pri);
}
.tk-btn--pri:hover { background: rgba(255,255,255,0.92); }
.tk-btn--pri:active { transform: scale(0.98); }
.tk-btn--sec {
    background: transparent;
    color: var(--tk-c-white);
    border: 1px solid rgba(255,255,255,0.4);
}
.tk-btn--sec:hover { border-color: rgba(255,255,255,0.8); color: var(--tk-c-white); }
.tk-btn--sec:active { opacity: 0.9; transform: scale(0.98); }
.tk-hero__device {
    flex-shrink: 0;
    width: min(38%, 300px);
}
.tk-hero__device-frame {
    position: relative;
    padding: 12px;
    background: rgba(0,0,0,0.35);
    border-radius: 32px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.35);
}
.tk-hero__device-frame::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: rgba(255,255,255,0.2);
    border-radius: 3px;
}
.tk-hero__device-frame img {
    width: 100%;
    border-radius: 22px;
    display: block;
}
.tk-hero__scroll {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
    animation: tk-scroll 2s ease-in-out infinite;
}
@keyframes tk-scroll {
    0%, 100% { opacity: 0.5; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(6px); }
}

@media (max-width: 880px) {
    .tk-hero__inner {
        flex-direction: column;
        text-align: center;
        padding-bottom: calc(48px + env(safe-area-inset-bottom, 0));
    }
    .tk-hero__cnt { max-width: none; }
    .tk-hero__btns { justify-content: center; }
    .tk-hero__device { width: 100%; max-width: 240px; margin: 0 auto; }
    .tk-hero__scroll {
        bottom: calc(20px + env(safe-area-inset-bottom, 0));
    }
}

/* ——— 全球用户统计 ——— */
.tk-band--stats { padding: 48px 0; }
.tk-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    padding: 40px 24px;
    background: var(--tk-c-white);
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(13,33,55,0.06);
}
.tk-stats__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.tk-stats__icon {
    width: 48px;
    height: 48px;
    color: var(--tk-c-acc);
}
.tk-stats__icon svg { width: 100%; height: 100%; }
.tk-stats__num {
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    line-height: 1;
}
.tk-stats__unit { font-size: 1rem; color: var(--tk-c-acc); }
.tk-stats__label { font-size: 0.9rem; color: var(--tk-c-txt-mute); }
@media (max-width: 880px) {
    .tk-stats { grid-template-columns: 1fr; gap: 24px; }
}

/* ——— 支持货币 ——— */
.tk-band--coins { background: var(--tk-c-white); }
.tk-coins {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px 32px;
}
.tk-coins__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 24px;
    background: var(--tk-c-bg);
    border-radius: 12px;
    transition: transform var(--tk-ease), box-shadow var(--tk-ease);
}
.tk-coins__item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(13,33,55,0.08);
}
.tk-coins__item img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}
.tk-coins__item span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--tk-c-pri);
}

/* ——— 教程指南 ——— */
.tk-band--guide { background: var(--tk-c-bg); }
.tk-guide {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 16px 8px;
}
.tk-guide__step {
    flex: 1;
    min-width: 160px;
    max-width: 220px;
    padding: 28px 20px;
    background: var(--tk-c-white);
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--tk-c-line);
    transition: border-color var(--tk-ease), box-shadow var(--tk-ease);
}
.tk-guide__step:hover {
    border-color: var(--tk-c-acc);
    box-shadow: 0 4px 16px rgba(35,128,232,0.08);
}
.tk-guide__num {
    display: inline-block;
    width: 28px;
    height: 28px;
    line-height: 28px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--tk-c-acc);
    background: var(--tk-c-acc-fade);
    border-radius: 50%;
    margin-bottom: 12px;
}
.tk-guide__icon {
    display: block;
    width: 40px;
    height: 40px;
    margin: 0 auto 14px;
    color: var(--tk-c-acc);
}
.tk-guide__icon svg { width: 100%; height: 100%; }
.tk-guide__step h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    margin-bottom: 8px;
}
.tk-guide__step p { font-size: 0.8rem; color: var(--tk-c-txt-mute); }
.tk-guide__arrow {
    align-self: center;
    font-size: 1.25rem;
    color: var(--tk-c-txt-mute);
}
@media (max-width: 880px) {
    .tk-guide__arrow { display: none; }
    .tk-guide__step { max-width: none; }
}

/* ——— 助记词板块 ——— */
.tk-band--mnemonic { background: var(--tk-c-white); }
.tk-mnemonic {
    display: grid;
    grid-template-columns: 0.45fr 1fr;
    gap: 64px;
    align-items: center;
}
.tk-mnemonic__vis {
    position: relative;
}
.tk-mnemonic__icon {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 56px;
    height: 56px;
    padding: 14px;
    background: var(--tk-c-white);
    border-radius: 12px;
    color: var(--tk-c-acc);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.tk-mnemonic__icon svg { width: 100%; height: 100%; }
.tk-mnemonic__vis img {
    width: 100%;
    border-radius: 12px;
    aspect-ratio: 4/3;
    object-fit: cover;
}
.tk-mnemonic__body h2 { margin: 12px 0 16px; }
.tk-mnemonic__body > p {
    font-size: 0.95rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.7;
    margin-bottom: 24px;
}
.tk-mnemonic__tips {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.tk-mnemonic__tips li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--tk-c-txt);
}
.tk-mnemonic__tips svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: #22c55e;
}
@media (max-width: 880px) {
    .tk-mnemonic { grid-template-columns: 1fr; }
}

/* ——— 通用区块 ——— */
.tk-band { padding: var(--tk-pad) 0; }
.tk-band__w {
    max-width: var(--tk-w-max);
    margin: 0 auto;
    padding: 0 24px;
}
.tk-cap { margin-bottom: 48px; }
.tk-cap h2 {
    font-size: clamp(1.6rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--tk-c-pri);
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}
.tk-cap p {
    font-size: 0.95rem;
    color: var(--tk-c-txt-mute);
}
.tk-cap--light h2,
.tk-cap--light p { color: rgba(255,255,255,0.95); }
.tk-cap--light p { color: rgba(255,255,255,0.8); }
.tk-cap--center { text-align: center; }
.tk-cap--center p { margin-left: auto; margin-right: auto; }
.tk-cap__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--tk-c-acc);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.tk-band__w--wide { max-width: 1280px; }
.tk-band__w--xl { max-width: var(--tk-w-xl); }
.tk-band--full { background: var(--tk-c-bg); }

@media (max-width: 880px) {
    .tk-band { padding: var(--tk-pad-s) 0; }
}

/* ——— 品牌介绍 ——— */
.tk-band--about { background: var(--tk-c-bg); }
.tk-about {
    display: grid;
    grid-template-columns: 1fr 0.9fr 1fr;
    gap: 48px 64px;
    align-items: start;
}
.tk-about__lead {
    grid-column: 1;
}
.tk-about__num {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--tk-c-acc);
    letter-spacing: 0.15em;
    margin-bottom: 12px;
    display: block;
}
.tk-about__lead h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    margin-bottom: 14px;
}
.tk-about__lead p {
    font-size: 0.9375rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.7;
}
.tk-about__img {
    grid-column: 2;
    border-radius: 8px;
    overflow: hidden;
}
.tk-about__img img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}
.tk-about__points {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.tk-about__pt {
    font-size: 0.875rem;
    color: var(--tk-c-txt);
    line-height: 1.5;
}
.tk-about__pt-num {
    color: var(--tk-c-acc);
    margin-right: 6px;
}

@media (max-width: 880px) {
    .tk-about {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .tk-about__lead, .tk-about__img, .tk-about__points { grid-column: 1; }
    .tk-about__img { max-width: 320px; margin: 0 auto; }
}

/* ——— 产品能力 ——— */
.tk-band--product { background: var(--tk-c-white); }
.tk-prod {
    display: flex;
    flex-direction: column;
    gap: 48px;
}
.tk-prod__showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.tk-prod__fig {
    margin: 0;
}
.tk-prod__fig img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 6px;
}
.tk-prod__fig figcaption {
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.65;
}
.tk-prod__fig figcaption b {
    font-weight: 600;
    color: var(--tk-c-pri);
}
.tk-prod__list {
    border-top: 1px solid var(--tk-c-line);
    padding-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.tk-prod__row {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 20px;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--tk-c-line);
    font-size: 0.875rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.55;
}
.tk-prod__row:last-child { border-bottom: none; }
.tk-prod__icon {
    width: 40px;
    height: 40px;
    padding: 8px;
    color: var(--tk-c-acc);
}
.tk-prod__icon svg { width: 100%; height: 100%; }
.tk-prod__row strong { color: var(--tk-c-pri); }

@media (max-width: 880px) {
    .tk-prod__showcase { grid-template-columns: 1fr; }
    .tk-prod__row { grid-template-columns: 44px 1fr; }
}

/* ——— 核心优势：双行横向信息带 ——— */
.tk-band--adv { background: var(--tk-c-pri); }
.tk-adv { display: flex; flex-direction: column; gap: 0; }
.tk-adv__row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}
.tk-adv__cell {
    padding: 28px 24px;
    border-right: 1px solid rgba(255,255,255,0.1);
}
.tk-adv__icon {
    display: block;
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.9);
}
.tk-adv__icon svg { width: 100%; height: 100%; }
.tk-adv__cell:last-child { border-right: none; }
.tk-adv__row--alt .tk-adv__cell {
    border-top: 1px solid rgba(255,255,255,0.1);
}
.tk-adv__cell h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--tk-c-white);
    margin-bottom: 8px;
}
.tk-adv__cell p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.55;
}

@media (max-width: 880px) {
    .tk-adv__row { grid-template-columns: 1fr; }
    .tk-adv__cell {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .tk-adv__cell:last-child { border-bottom: none; }
    .tk-adv__row--alt .tk-adv__cell { border-top: none; }
}

/* ——— 安全机制 ——— */
.tk-band--safe { background: var(--tk-c-bg); }
.tk-safe {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: start;
}
.tk-safe__visual { }
.tk-safe__img {
    border-radius: 8px;
    overflow: hidden;
}
.tk-safe__img img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}
.tk-safe__content {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.tk-safe__item {
    padding: 28px 0;
    border-bottom: 1px solid var(--tk-c-line);
}
.tk-safe__item:last-child { border-bottom: none; }
.tk-safe__num {
    display: inline-block;
    width: 24px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--tk-c-acc);
    background: var(--tk-c-acc-fade);
    border-radius: 50%;
    margin-bottom: 12px;
}
.tk-safe__item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    margin-bottom: 8px;
}
.tk-safe__item p {
    font-size: 0.875rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.7;
}

@media (max-width: 880px) {
    .tk-safe { grid-template-columns: 1fr; gap: 40px; }
}

/* ——— 应用场景：大图左 + 文字右；下排三列 ——— */
.tk-band--scene { background: var(--tk-c-white); }
.tk-scene { display: flex; flex-direction: column; gap: 40px; }
.tk-scene__a {
    display: grid;
    grid-template-columns: 0.5fr 1fr;
    gap: 48px;
    align-items: center;
}
.tk-scene__pic img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: 10px;
}
.tk-scene__body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--tk-c-pri);
    margin-bottom: 6px;
}
.tk-scene__body h3 + p { margin-bottom: 20px; }
.tk-scene__body h3 + p:last-child { margin-bottom: 0; }
.tk-scene__body p {
    font-size: 0.875rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.6;
}
.tk-scene__b {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.tk-scene__b .tk-scene__body {
    padding: 24px;
    background: var(--tk-c-bg);
    border-radius: 8px;
}

@media (max-width: 880px) {
    .tk-scene__a {
        grid-template-columns: 1fr;
    }
    .tk-scene__b { grid-template-columns: 1fr; }
}

/* ——— 产品界面展示：横滑手机截图 ——— */
.tk-band--gallery { background: var(--tk-c-bg); }
.tk-gallery {
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 16px;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
}
.tk-gallery::-webkit-scrollbar { height: 6px; }
.tk-gallery::-webkit-scrollbar-track { background: var(--tk-c-line); border-radius: 3px; }
.tk-gallery::-webkit-scrollbar-thumb { background: var(--tk-c-txt-mute); border-radius: 3px; }
.tk-gallery__track {
    display: flex;
    gap: 20px;
    min-width: min-content;
    padding: 4px 0;
}
.tk-gallery__track img {
    width: min(220px, 30vw);
    flex-shrink: 0;
    border-radius: 16px;
    aspect-ratio: 9/16;
    object-fit: cover;
    transition: transform var(--tk-ease);
    scroll-snap-align: start;
}
.tk-gallery__track img:hover,
.tk-gallery__track img:active {
    transform: scale(1.03);
}

/* 货币图标浮动动画 */
@keyframes tk-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}
.tk-coins__item:nth-child(3n+1):hover img { animation: tk-float 1.5s ease-in-out; }
.tk-coins__item:nth-child(3n+2):hover img { animation: tk-float 1.5s ease-in-out 0.1s; }
.tk-coins__item:nth-child(3n):hover img { animation: tk-float 1.5s ease-in-out 0.2s; }

@media (max-width: 880px) {
    .tk-gallery {
        margin: 0 -24px;
        padding: 0 24px 20px;
        scroll-padding: 0 24px;
    }
    .tk-gallery__track img {
        width: 160px;
        scroll-snap-align: center;
    }
}

/* ——— FAQ：简洁列表 ——— */
.tk-band--faq { background: var(--tk-c-white); }
.tk-faq { max-width: 680px; }
.tk-faq__it {
    border-bottom: 1px solid var(--tk-c-line);
}
.tk-faq__it summary {
    padding: 20px 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--tk-c-pri);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    -webkit-tap-highlight-color: transparent;
    transition: color var(--tk-ease);
}
.tk-faq__it summary:hover { color: var(--tk-c-acc); }
.tk-faq__it summary:active { color: var(--tk-c-acc); }
.tk-faq__it summary::-webkit-details-marker { display: none; }
.tk-faq__it summary::after {
    content: "+";
    font-size: 1.1rem;
    color: var(--tk-c-txt-mute);
    transition: transform var(--tk-ease);
}
.tk-faq__it[open] summary::after { transform: rotate(45deg); }
.tk-faq__it p {
    padding: 0 0 18px 0;
    font-size: 0.9rem;
    color: var(--tk-c-txt-mute);
    line-height: 1.65;
}

/* ——— 页脚 ——— */
.tk-ftr {
    background: #091829;
    color: rgba(255,255,255,0.9);
    padding: 64px 24px 32px;
}
.tk-ftr__w {
    max-width: var(--tk-w-xl);
    margin: 0 auto;
    padding: 0 24px;
}
.tk-ftr__main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    align-items: start;
}
.tk-ftr__brand-block {
    max-width: 220px;
}
.tk-ftr__brand {
    display: flex;
    align-items: center;
    gap: 12px;
}
.tk-ftr__brand img {
    width: 32px;
    height: 32px;
    opacity: 0.95;
}
.tk-ftr__brand span {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}
.tk-ftr__slogan {
    margin-top: 12px;
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.5;
}
.tk-ftr__cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.tk-ftr__col h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.tk-ftr__col a {
    display: block;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 10px;
    padding: 6px 0;
    -webkit-tap-highlight-color: transparent;
}
.tk-ftr__col a:hover { color: var(--tk-c-white); }
.tk-ftr__div {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 40px 0 28px;
}
.tk-ftr__legal-row {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.tk-ftr__notice p {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.65;
}
.tk-ftr__notice-en {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    margin-top: 8px;
}
.tk-ftr__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.5);
}
.tk-ftr__copy {
    font-weight: 500;
    color: rgba(255,255,255,0.7);
}
.tk-ftr__sep {
    color: rgba(255,255,255,0.3);
}
.tk-ftr__bottom a {
    color: rgba(255,255,255,0.5);
}
.tk-ftr__bottom a:hover { color: rgba(255,255,255,0.9); }
.tk-ftr__icp { color: rgba(255,255,255,0.4); }

@media (max-width: 880px) {
    .tk-ftr {
        padding: 48px 24px 28px;
        padding-bottom: calc(28px + env(safe-area-inset-bottom, 0));
    }
    .tk-ftr__col a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    .tk-ftr__main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .tk-ftr__brand-block { max-width: none; }
    .tk-ftr__cols {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    .tk-ftr__bottom { justify-content: center; }
}

/* ——— 移动端增强：触摸反馈与交互 ——— */
@media (max-width: 880px) {
    .tk-btn {
        min-height: 48px;
        padding: 14px 28px;
    }
    .tk-coins__item {
        min-width: 100px;
        min-height: 100px;
        padding: 20px 16px;
    }
    .tk-coins__item:active {
        transform: scale(0.96);
    }
    .tk-guide__step {
        padding: 24px 16px;
    }
    .tk-guide__step:active {
        transform: scale(0.98);
    }
    .tk-scene__b .tk-scene__body {
        padding: 20px;
    }
    .tk-scene__b .tk-scene__body:active {
        background: var(--tk-c-line);
    }
    .tk-prod__row {
        padding: 18px 0;
        min-height: 72px;
    }
    .tk-prod__row:active {
        background: var(--tk-c-bg-alt);
    }
}

/* ——— 滚动显现 ——— */
.tk-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s var(--tk-ease-out), transform 0.5s var(--tk-ease-out);
}
.tk-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 减少移动端动画以提升性能 */
@media (prefers-reduced-motion: reduce) {
    .tk-reveal { transition: opacity 0.2s ease; }
}