:root{
  --bg:#f5f7fc; --panel:#ffffff; --line:#e6e9f2;
  --text:#1b1e2e; --muted:#6b7280;
  --brand:#7c5cff; --brand2:#6a3ff0; --gold:#c98a12;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
/* hidden 属性兜底：类选择器上的 display（如 .auth__form{display:flex}）
   优先级高于浏览器默认的 [hidden]{display:none}，会导致本该隐藏的面板仍然显示 */
[hidden]{display:none!important}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  padding:.7em 1.3em;border-radius:10px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer}
.btn[hidden]{display:none!important}
.btn--lg{padding:.9em 1.8em}
.btn--primary{background:var(--brand);color:#fff}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--glass{background:var(--panel);color:var(--text);border-color:var(--line)}

/* 导航 */
.nav{position:sticky;top:0;z-index:50;background:#ffffff;border-bottom:1px solid var(--line)}
.nav__inner{max-width:var(--maxw);margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:.5em;font-weight:800;font-size:1.1rem}
.brand__logo{width:32px;height:32px;display:block;border-radius:9px;object-fit:contain;flex:none}
.nav__links{display:flex;gap:6px;margin-left:20px}
.nav__links a{color:var(--muted);font-size:.95rem;padding:.45em .85em;border-radius:9px;transition:color .15s,background-color .15s}
.nav__links a:hover{color:var(--brand2);background:#f3edff}
.nav__links a.active{color:var(--brand2);background:#f3edff;font-weight:700;box-shadow:inset 0 -2px 0 var(--brand2)}
.nav__actions{margin-left:auto;display:flex;gap:10px}
.nav__toggle{display:none;background:none;border:0;color:var(--text);font-size:1.4rem;cursor:pointer}

/* Hero */
.hero{max-width:var(--maxw);margin:0 auto;padding:54px 16px 40px;text-align:center}
.badge{display:inline-block;padding:.4em 1em;border:1px solid var(--line);background:var(--panel);color:var(--muted);font-size:.82rem;border-radius:999px;margin-bottom:20px}
.hero__title{font-size:clamp(2rem,5vw,3.6rem);font-weight:800;line-height:1.15}
.hero__title span{display:block;font-size:clamp(1rem,2vw,1.4rem);font-weight:600;margin-top:14px;color:var(--muted)}
.grad{color:var(--brand2)}
.hero__sub{max-width:640px;margin:18px auto 0;color:var(--muted)}
.hero__cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.hero__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:720px;margin:40px auto 0;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
.stat b{display:block;font-size:clamp(1.3rem,3vw,1.8rem);font-weight:800;color:var(--gold)}
.stat span{font-size:.8rem;color:var(--muted)}

/* 区块 */
.section{max-width:var(--maxw);margin:0 auto;padding:60px 16px}
.section--alt{background:#eef1f8}
.section__head{text-align:center;margin-bottom:36px}
.kicker{display:inline-block;font-size:.78rem;letter-spacing:2px;color:var(--brand2);font-weight:700;margin-bottom:12px}
.section__head h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800}
.section__head p{color:var(--muted);margin-top:12px;max-width:600px;margin-inline:auto}

/* 搜索 + 筛选 */
.market-tools{display:flex;flex-direction:column;align-items:center;gap:16px;margin-bottom:30px}
.search{width:min(560px,100%);position:relative;display:flex;align-items:center}
.search__icon{position:absolute;left:14px}
.search input{width:100%;padding:.8em 1em .8em 2.6em;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:.95rem;outline:none}
.search input:focus{border-color:var(--brand)}
.filter{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chip{padding:.5em 1em;border-radius:999px;border:1px solid var(--line);background:var(--panel);color:var(--muted);font-weight:600;font-size:.88rem;cursor:pointer}
.chip.is-active{background:var(--brand);color:#fff;border-color:var(--brand)}
.empty{text-align:center;color:var(--muted);margin-top:18px}

/* 卡片 */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel);display:flex;flex-direction:column;cursor:pointer}
.card__cover{height:140px;display:grid;place-items:center;font-size:2.8rem;position:relative}
.card__cat{position:absolute;top:10px;left:10px;font-size:.7rem;font-weight:700;padding:.25em .7em;border-radius:999px;background:rgba(0,0,0,.45);color:#fff}
.card__dl{position:absolute;bottom:10px;right:10px;font-size:.74rem;font-weight:700;padding:.3em .7em;border-radius:999px;background:#fff;color:#111}
.card__body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card__title{font-size:1.08rem;font-weight:700}
.card__desc{color:var(--muted);font-size:.88rem;flex:1}
.card__meta{display:flex;align-items:center;justify-content:space-between;margin-top:6px;font-size:.8rem;color:var(--muted)}
.card__use{color:var(--brand2);font-weight:700}
.card.is-locked .card__cover{filter:saturate(.82) brightness(.97)}
.card__lock{position:absolute;top:10px;right:10px;width:26px;height:26px;display:grid;place-items:center;border-radius:50%;background:rgba(0,0,0,.5);color:#fff;font-size:.95rem}

/* 会员权限徽标 */
.access-badge{display:inline-block;font-size:.74rem;font-weight:700;padding:.2em .7em;border-radius:999px;border:1px solid transparent}
.access-badge.is-free{background:#eef6ec;color:#2f8f3e;border-color:#cfe9cf}
.access-badge.is-pro{background:#f3edff;color:#6a3ff0;border-color:#d9caff}
.access-badge.is-biz{background:#fff4e0;color:#c98a12;border-color:#f0d9a8}
.nav__mine{font-size:.82rem;font-weight:700;padding:.45em 1em;border-radius:999px;background:#f3edff;color:#6a3ff0;border:1px solid #d9caff}
.nav__mine:hover{background:#ece2ff;color:#5a2fd0}
.nav__mine[hidden]{display:none!important}
.nav__user{display:flex;align-items:center;gap:8px}
/* 会员版本标识（导航栏 / 会员中心通用） */
.tier-badge{display:inline-flex;align-items:center;gap:4px;font-size:.72rem;font-weight:800;line-height:1.4;padding:.3em .7em;border-radius:999px;white-space:nowrap;letter-spacing:.02em}
.tier-badge[data-tier="free"]{background:#f3edff;color:#6a3ff0;border:1px solid #d9caff}
.tier-badge[data-tier="pro"]{background:linear-gradient(135deg,#f5a623,#c98a12);color:#fff;border:1px solid #c98a12;box-shadow:0 2px 6px rgba(201,138,18,.28)}
.tier-badge[data-tier="biz"]{background:linear-gradient(135deg,#8b6bff,#6a3ff0);color:#fff;border:1px solid #6a3ff0;box-shadow:0 2px 6px rgba(106,63,240,.28)}
.tier-badge[hidden]{display:none!important}
.locked-row{background:#fff8ec !important;border-color:#f0d9a8 !important}
.locked-row .locked{color:var(--gold);font-weight:600}
.fbtn--lock{background:var(--gold);color:#1a1205;padding:.4em .8em;border-radius:8px}

/* 特性 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--panel)}
.feature__icon{font-size:1.8rem;margin-bottom:10px}
.feature h3{font-size:1.05rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.86rem}
.custom-cta{margin-top:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
.custom-cta__text h3{font-size:1.2rem}
.custom-cta__text p{color:var(--muted)}

/* 套餐 */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{position:relative;border:1px solid var(--line);border-radius:14px;padding:26px;background:var(--panel);display:flex;flex-direction:column}
.plan--hot{border-color:var(--brand);background:#f4f0ff}
.plan__flag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:#1a1205;font-weight:800;font-size:.78rem;padding:.3em .9em;border-radius:999px;white-space:nowrap}
.plan__name{font-size:1.15rem;font-weight:700}
.plan__price{margin:12px 0 16px}
.plan__price b{font-size:2.2rem;font-weight:800}
.plan__price span{color:var(--muted);font-size:.88rem;margin-left:.3em}
.plan__list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:20px;flex:1}
.plan__list li{font-size:.9rem}
.plan__list li.off{color:var(--muted);text-decoration:line-through}
.plan .btn{width:100%}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.why{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--panel)}
.why b{font-size:1.5rem;font-weight:800;color:var(--brand)}
.why h4{margin:8px 0 6px;font-size:1.05rem}
.why p{color:var(--muted);font-size:.85rem}

/* 页脚 */
.footer{border-top:1px solid var(--line);margin-top:30px;background:#ffffff}
.footer__inner{max-width:var(--maxw);margin:0 auto;padding:44px 16px 24px;display:flex;gap:36px;flex-wrap:wrap;justify-content:space-between}
.footer__brand{display:flex;align-items:flex-start;gap:.5em;font-weight:800}
.footer__brand p{color:var(--muted);font-weight:400;margin-top:8px;font-size:.88rem}
.footer__cols{display:flex;gap:48px;flex-wrap:wrap}
.footer__cols h5{font-size:.92rem;margin-bottom:10px}
.footer__cols a{display:block;color:var(--muted);font-size:.85rem;margin-bottom:7px}
.footer__bar{max-width:var(--maxw);margin:0 auto;padding:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem;text-align:center}
.back-top{position:fixed;right:18px;bottom:18px;width:42px;height:42px;display:none;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-size:1.1rem;z-index:40}
.back-top.show{display:grid}

/* 弹窗 */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:24px}
.modal.open{display:flex}
.modal__backdrop{position:absolute;inset:0;background:rgba(0,0,0,.7)}
.modal__panel{position:relative;width:min(540px,100%);max-height:90vh;overflow:auto;border:1px solid var(--line);border-radius:14px;background:#ffffff}
.modal__x{position:absolute;top:12px;right:12px;z-index:2;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:rgba(0,0,0,.06);color:#333;cursor:pointer}
.dmodal__cover{height:150px;display:grid;place-items:center}
.dmodal__body{padding:20px 22px 24px}
.dmodal__body .card__cat{position:static;display:inline-block;margin-bottom:10px}
.dmodal__body h3{font-size:1.35rem;font-weight:800}
.dmodal__users{color:var(--muted);font-size:.82rem;margin-top:4px}
.dmodal__desc{margin-top:12px;font-size:.92rem}
.dmodal__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.dmodal__tags span{font-size:.76rem;padding:.25em .7em;border-radius:999px;background:var(--panel);border:1px solid var(--line);color:var(--muted)}
.dmodal__files{margin-top:18px;border-top:1px solid var(--line);padding-top:16px}
.dmodal__files h4{font-size:.92rem;margin-bottom:10px}
.dmodal__files ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.dmodal__files li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}
.dmodal__files .fsize{color:var(--muted);font-size:.8rem}
.dmodal__files .fbtn{font-size:.82rem;font-weight:700;color:var(--brand2);white-space:nowrap}
.dmodal__files .locked{color:var(--gold)}
.dmodal__cta{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.dmodal__cta .btn{flex:1;min-width:130px}
.vip__title{font-size:1.2rem;font-weight:800;text-align:center;margin-bottom:18px}
.vip__plans{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.vplan{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 6px;border-radius:12px;border:1px solid var(--line);background:var(--panel);cursor:pointer}
.vplan input{position:absolute;opacity:0}
.vplan b{font-size:.95rem}
.vplan span{font-size:1.15rem;font-weight:800;color:var(--brand2)}
.vplan i{font-size:.7rem;color:var(--muted);font-style:normal}
.vplan:has(input:checked){border-color:var(--brand);background:#f4f0ff}
.vip__logged{display:flex;align-items:center;gap:10px;padding:12px 14px;margin-bottom:12px;border-radius:10px;background:#f3edff;border:1px solid #d9caff}
.vip__logged-tag{font-size:.72rem;font-weight:700;color:#fff;background:var(--brand);border-radius:999px;padding:.25em .7em}
.vip__logged-name{flex:1;font-size:.92rem;font-weight:700;color:var(--text)}
.vip__logged-switch{border:0;background:transparent;color:var(--brand2);font-size:.82rem;font-weight:600;cursor:pointer;padding:0}
.vip__logged-switch:hover{text-decoration:underline}
.vip__form{display:flex;flex-direction:column;gap:12px}
.vip__form label{display:flex;flex-direction:column;gap:5px;font-size:.82rem;color:var(--muted)}
.vip__form input{padding:.7em .9em;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:.92rem;outline:none}
.vip__form input:focus{border-color:var(--brand)}
.vip__summary{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:10px;background:var(--panel);border:1px solid var(--line)}
.vip__summary b{font-size:1.3rem;color:var(--gold)}
.vip__pay{width:100%}
/* 会员弹窗整体留白 */
#vipModal .modal__panel{padding:30px 30px 34px}
.vip__title{margin-bottom:22px}
/* 扫码支付二维码 */
.vip__qr{margin-top:16px;display:flex;flex-direction:column;align-items:center;gap:10px;padding:18px;border:1px dashed var(--line);border-radius:12px;background:#fafbff}
.vip__qr-box{width:168px;height:168px;display:grid;place-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px}
.vip__qr-box img{width:100%;height:100%;display:block;object-fit:contain}
.vip__qr-tip{font-size:.82rem;color:var(--muted)}
.vip__qr-amt{font-size:1.25rem;font-weight:800;color:var(--gold)}
.pay-tabs{display:flex;gap:8px;width:100%;max-width:230px;padding:4px;background:var(--bg);border:1px solid var(--line);border-radius:999px}
.pay-tab{flex:1;border:0;background:transparent;padding:.5em 0;border-radius:999px;font-size:.84rem;font-weight:700;color:var(--muted);cursor:pointer}
.pay-tab.is-active{background:var(--panel);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.pay-tab[data-pay="wx"].is-active{color:#07c160}
.pay-tab[data-pay="ali"].is-active{color:#1677ff}
.vip__note{text-align:center;font-size:.74rem;color:var(--muted)}

/* 登录/注册弹窗 */
#authModal .modal__panel{padding:30px 30px 34px}
.auth__title{font-size:1.25rem;font-weight:800;text-align:center;margin-bottom:6px}
.auth__sub{text-align:center;color:var(--muted);font-size:.84rem;margin-bottom:18px}
.auth__tabs{display:flex;gap:8px;padding:4px;background:var(--bg);border:1px solid var(--line);border-radius:999px;margin-bottom:18px}
.auth__tab{flex:1;border:0;background:transparent;padding:.55em 0;border-radius:999px;font-size:.92rem;font-weight:700;color:var(--muted);cursor:pointer}
.auth__tab.is-active{background:var(--panel);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.auth__form{display:flex;flex-direction:column;gap:12px}
.auth__form label{display:flex;flex-direction:column;gap:5px;font-size:.82rem;color:var(--muted)}
.auth__form input{padding:.7em .9em;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:.92rem;outline:none}
.auth__form input:focus{border-color:var(--brand)}
.auth__err{color:#e04646;font-size:.8rem;min-height:1em}
.auth__note{text-align:center;font-size:.74rem;color:var(--muted);margin-top:14px}
.vip__success{text-align:center;padding:12px 0}
.vip__check{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;font-size:1.6rem;background:var(--brand);color:#fff}
.vip__success h4{font-size:1.2rem;margin-bottom:6px}
.vip__success p{color:var(--muted);margin-bottom:16px}

@media (max-width:980px){.cards,.feature-grid,.why-grid{grid-template-columns:repeat(2,1fr)}.pricing{grid-template-columns:1fr;max-width:440px;margin-inline:auto}}
@media (max-width:760px){.nav__links{display:none}.nav__toggle{display:block}.nav__actions{margin-left:auto;gap:8px}.nav__actions .btn--primary,.nav__mine{font-size:.76rem;padding:.42em .85em;white-space:nowrap}.nav__links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#ffffff;padding:14px 18px;gap:12px;border-bottom:1px solid var(--line)}.hero__stats{grid-template-columns:repeat(2,1fr)}.custom-cta{flex-direction:column;align-items:flex-start}}
@media (max-width:480px){.cards,.feature-grid,.why-grid{grid-template-columns:1fr}.hero__cta .btn{width:100%}.vip__plans{grid-template-columns:1fr}.vip__plans .vplan{flex-direction:row;justify-content:space-between;padding:10px 14px}}

/* 关于我们 */
.about__body{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.about__body p{color:var(--muted);font-size:1rem;text-align:justify;line-height:1.85}

/* 联系我们 / 商务合作 */
.contact__grid{max-width:920px;margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.contact__info h3{font-size:1.3rem;margin-bottom:10px}
.contact__lead{color:var(--muted);margin-bottom:16px}
.contact__list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.contact__list li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 16px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.contact__list span{color:var(--muted);font-size:.9rem}
.contact__list b{font-size:.95rem;color:var(--text)}
.contact__qr{display:flex;justify-content:center}
.qr-card{display:flex;flex-direction:column;align-items:center;gap:12px;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:0 8px 24px rgba(106,63,240,.08)}
.qr-img{width:200px;height:200px;object-fit:contain;border-radius:10px;border:1px solid var(--line);background:#fff}
.qr-placeholder{width:200px;height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;border:1px dashed var(--line);border-radius:10px;background:#fafbff;color:var(--muted);text-align:center;padding:16px}
.qr-placeholder span{font-weight:700;color:var(--text);font-size:1rem}
.qr-placeholder small{font-size:.74rem;line-height:1.5}
.qr-tip{font-size:.95rem;font-weight:700;color:var(--brand2)}
.qr-sub{font-size:.82rem;color:var(--muted)}
.qr-sub b{color:var(--text)}

/* 提交定制需求弹窗 */
#requireModal .modal__panel{padding:30px 30px 34px;width:min(520px,100%)}
.require__title{font-size:1.25rem;font-weight:800;text-align:center;margin-bottom:6px}
.require__sub{text-align:center;color:var(--muted);font-size:.84rem;margin-bottom:18px}
.require__form{display:flex;flex-direction:column;gap:12px}
.require__form label{display:flex;flex-direction:column;gap:5px;font-size:.82rem;color:var(--muted)}
.require__form input,.require__form textarea{padding:.7em .9em;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:.92rem;outline:none;font-family:inherit;resize:vertical}
.require__form input:focus,.require__form textarea:focus{border-color:var(--brand)}
.require__err{color:#e04646;font-size:.8rem;min-height:1em}
.require__form .btn{width:100%}
.require__success{text-align:center;padding:14px 0}
.require__check{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;font-size:1.6rem;background:var(--brand);color:#fff}
.require__success h4{font-size:1.2rem;margin-bottom:6px}
.require__success p{color:var(--muted);margin-bottom:16px}

@media (max-width:760px){.contact__grid{grid-template-columns:1fr}.contact__qr{order:-1}}