:root {
    --ink: #121820;
    --navy: #0e2433;
    --river: #1f5f7a;
    --peony: #c12a3a;
    --gold: #c4a35a;
    --paper: #f5f2ec;
    --card: #fffdf9;
    --line: #d8d2c6;
    --muted: #5b6570;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scrollbar-gutter: stable;
}

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--ink);
    background-color: var(--paper);
    background-image:
        linear-gradient(180deg, rgba(245, 242, 236, 0.94) 0%, rgba(238, 234, 226, 0.96) 100%),
        url("../image/page-grain.jpg");
    background-size: cover;
    background-position: center top;
    line-height: 1.65;
}

@media (max-width: 768px) {
    body {
        background-attachment: scroll;
    }
}

a {
    color: var(--river);
}

a:hover {
    color: var(--peony);
}

img {
    max-width: 100%;
    height: auto;
}

.wrap {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.strip {
    background: var(--navy);
    color: #d7c9a4;
    font-size: 0.78rem;
}

.strip-in {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    padding: 8px 0;
}

.strip a {
    color: #f0d48a;
    text-decoration: none;
}

.mast {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(245, 242, 236, 0.95);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.mast-in {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--ink);
}

.brand-mark {
    width: 40px;
    height: 40px;
    background: var(--peony);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 800;
    letter-spacing: 0;
}

.brand strong {
    display: block;
    font-size: 1.22rem;
    letter-spacing: 0.16em;
}

.brand small {
    display: block;
    color: var(--muted);
    font-size: 0.72rem;
    margin-top: 2px;
}

.nav ul {
    display: flex;
    gap: 18px;
    list-style: none;
    flex-wrap: wrap;
}

.nav a {
    text-decoration: none;
    color: #2b3540;
    font-weight: 600;
    font-size: 0.92rem;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.is-on {
    color: var(--navy);
    border-bottom-color: var(--peony);
}

.menu-btn {
    display: none;
    border: 1px solid var(--navy);
    background: #fff;
    color: var(--navy);
    border-radius: 2px;
    padding: 8px 14px;
    font: inherit;
    cursor: pointer;
}

@media (max-width: 900px) {
    .menu-btn {
        display: inline-flex;
    }

    .nav {
        display: none;
        width: 100%;
        border-top: 1px solid var(--line);
        padding-top: 12px;
    }

    .nav.is-open {
        display: block;
    }

    .nav ul {
        flex-direction: column;
        gap: 12px;
    }
}

.hero {
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    min-height: clamp(360px, 56vh, 620px);
    background: var(--navy);
}

.hero-copy {
    padding: 64px 0 64px;
    color: #f4eee3;
    display: flex;
    align-items: center;
}

.hero-copy .inner {
    width: min(520px, calc(100% - 40px));
    margin-left: auto;
    padding-right: 28px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--gold);
    font-size: 0.74rem;
    letter-spacing: 0.16em;
    border-left: 3px solid var(--peony);
    padding-left: 10px;
}

.hero h1 {
    font-size: clamp(1.7rem, 3.8vw, 2.55rem);
    line-height: 1.26;
}

.hero p {
    margin: 16px 0 24px;
    color: #d8cfc0;
    font-size: 1.02rem;
}

.hero-visual {
    background-image:
        linear-gradient(90deg, rgba(14, 36, 51, 0.35), rgba(14, 36, 51, 0.08)),
        url("../image/hero-pitch.jpg");
    background-size: cover;
    background-position: center;
    min-height: 280px;
}

.act,
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.btn {
    display: inline-block;
    text-decoration: none;
    padding: 11px 18px;
    font-weight: 700;
    border: 1px solid transparent;
}

.btn-hot {
    background: var(--peony);
    color: #fff !important;
    border-color: #d64555;
}

.btn-ghost {
    background: transparent;
    color: #fff !important;
    border-color: var(--gold);
}

.btn-ink {
    background: transparent;
    color: var(--navy) !important;
    border-color: var(--navy);
}

.chip {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(196, 163, 90, 0.4);
    color: #efe4c8;
    padding: 7px 11px;
    font-size: 0.84rem;
}

.stat-bar {
    background: #163044;
    color: #d7cfc2;
}

.stat-in {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 20px 0;
}

.stat-in b {
    display: block;
    color: #fff;
    font-size: 1.32rem;
}

.stat-in span {
    font-size: 0.86rem;
}

.block {
    padding: 72px 0;
    scroll-margin-top: 86px;
}

.block-later {
    content-visibility: auto;
    contain-intrinsic-size: 1px 720px;
}

.head {
    margin-bottom: 28px;
}

.head h2 {
    font-size: 1.64rem;
    line-height: 1.3;
}

.head h2::after {
    content: "";
    display: block;
    width: 48px;
    height: 3px;
    margin-top: 10px;
    background: var(--peony);
}

.head p {
    color: var(--muted);
    margin-top: 10px;
    max-width: 640px;
}

.goods {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.goods-card {
    background: var(--card);
    border: 1px solid var(--line);
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    min-height: 100%;
    contain: content;
}

.goods-card:hover {
    border-color: var(--peony);
}

.goods-photo {
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: #10202b;
}

.goods-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.goods-body {
    padding: 18px 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tag {
    align-self: flex-start;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: #fff;
    background: var(--river);
    padding: 2px 8px;
}

.goods-body h3 {
    font-size: 1.12rem;
}

.goods-body p {
    color: #4d5863;
    font-size: 0.92rem;
}

.more {
    margin-top: auto;
    font-weight: 700;
    text-decoration: none;
    color: var(--navy);
}

.filter {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.filter button {
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    padding: 7px 14px;
    font: inherit;
    cursor: pointer;
}

.filter button.is-on {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}

.split {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 28px;
    align-items: center;
}

.split img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    border: 1px solid var(--line);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.steps article {
    background: var(--card);
    border-top: 4px solid var(--peony);
    border: 1px solid var(--line);
    border-top: 4px solid var(--gold);
    padding: 18px 16px;
}

.steps h3 {
    font-size: 1.04rem;
    margin-bottom: 8px;
}

.steps p {
    color: #4d5863;
    font-size: 0.92rem;
}

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

.clip {
    background: var(--card);
    border-left: 4px solid var(--river);
    border: 1px solid var(--line);
    border-left: 4px solid var(--river);
    padding: 18px 20px;
}

.clip h3 {
    margin-bottom: 8px;
    font-size: 1.06rem;
}

.clip p {
    color: #4d5863;
    font-size: 0.93rem;
}

.fold-list {
    display: grid;
    gap: 10px;
}

.fold {
    background: var(--card);
    border: 1px solid var(--line);
}

.fold button {
    width: 100%;
    text-align: left;
    background: none;
    border: 0;
    font: inherit;
    font-weight: 700;
    padding: 14px 16px;
    cursor: pointer;
    color: var(--ink);
}

.fold p {
    display: none;
    padding: 0 16px 14px;
    color: #4d5863;
    font-size: 0.93rem;
}

.fold.is-open p {
    display: block;
}

.desk {
    background: var(--navy);
    color: #e8dfd0;
    padding: 30px;
}

.desk h2 {
    color: #fff;
}

.desk h2::after {
    background: var(--gold);
}

.desk p,
.desk li {
    color: #cfc4b0;
}

.desk a {
    color: #f0d48a;
}

.desk-list {
    list-style: none;
    margin: 16px 0 20px;
}

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

.sheet {
    max-width: 860px;
    margin: 0 auto;
}

.sheet h1 {
    font-size: 1.86rem;
    margin-bottom: 12px;
}

.sheet h2 {
    font-size: 1.2rem;
    margin: 28px 0 10px;
}

.sheet p,
.sheet li {
    color: #3b4650;
    margin-bottom: 12px;
}

.sheet ul {
    padding-left: 1.2rem;
}

.item-stage {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 28px;
    align-items: start;
}

.item-shot {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border: 1px solid var(--line);
    background: #10202b;
}

.spec {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 22px;
    font-size: 0.92rem;
}

.spec th,
.spec td {
    border: 1px solid var(--line);
    padding: 10px 12px;
    text-align: left;
}

.spec th {
    width: 30%;
    background: #e8eef2;
}

.crumb {
    font-size: 0.86rem;
    color: var(--muted);
    margin-bottom: 18px;
}

.crumb a {
    text-decoration: none;
}

.end {
    background: #0a1822;
    color: #c7bdaa;
    padding: 36px 0 22px;
}

.end-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr 1.2fr;
    gap: 24px;
}

.end h3 {
    color: #f3e6c8;
    font-size: 1rem;
    margin-bottom: 10px;
}

.end a {
    color: #e8c56d;
    text-decoration: none;
}

.end p,
.end li {
    font-size: 0.88rem;
    line-height: 1.7;
}

.end ul {
    list-style: none;
}

.legal {
    margin-top: 22px;
    padding-top: 14px;
    border-top: 1px solid #243744;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    font-size: 0.8rem;
}

@media (max-width: 980px) {
    .hero,
    .goods,
    .split,
    .steps,
    .item-stage,
    .end-grid,
    .stat-in {
        grid-template-columns: 1fr 1fr;
    }

    .goods-card {
        grid-template-columns: 1fr;
    }

    .goods-photo {
        aspect-ratio: 16 / 10;
    }

    .hero-copy .inner {
        width: calc(100% - 36px);
        margin: 0 auto;
        padding-right: 0;
    }
}

@media (max-width: 640px) {
    .wrap {
        width: calc(100% - 28px);
    }

    .block {
        padding: 46px 0;
    }

    .block-later {
        contain-intrinsic-size: 1px 580px;
    }

    .hero,
    .goods,
    .split,
    .steps,
    .item-stage,
    .end-grid,
    .stat-in {
        grid-template-columns: 1fr;
    }

    .split img,
    .item-shot {
        height: 240px;
    }

    .hero-copy {
        padding: 42px 0;
    }
}