/* ===========================
   KAIEN TRADING — styles
   =========================== */

:root {
    --color-orange: #E87722;
    --color-orange-dark: #C95F10;
    --color-black: #1A1A1A;
    --color-text: #2B2B2B;
    --color-muted: #6B6B6B;
    --color-line: #E8E2D5;
    --color-bg: #FFFFFF;
    --color-bg-alt: #FAF7F0;
    --color-bg-cream: #F5EFE3;
    --color-bg-dark: #1A1A1A;

    --font-jp: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;

    --container-max: 1140px;
    --header-h: 72px;

    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   Reset & base
   =========================== */
*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    margin: 0;
    font-family: var(--font-jp);
    font-weight: 400;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
ul { list-style: none; padding: 0; margin: 0; }
button { font: inherit; cursor: pointer; background: none; border: none; padding: 0; color: inherit; }

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Header
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.header.is-scrolled {
    border-bottom-color: var(--color-line);
    box-shadow: var(--shadow-sm);
}
.header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header__logo img {
    height: 48px;
    width: auto;
}

.nav__list {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav__link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 6px 0;
}
.nav__link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-orange);
    transition: width 0.25s var(--ease);
}
.nav__link:hover::after { width: 100%; }
.nav__link:hover { color: var(--color-orange); }

.nav__link--cta {
    background: var(--color-orange);
    color: #fff !important;
    padding: 10px 22px;
    border-radius: var(--radius);
    transition: background 0.2s var(--ease);
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover { background: var(--color-orange-dark); }

.nav__toggle {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}
.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-black);
    transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   Hero
   =========================== */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 56px) 0 96px;
    overflow: hidden;
    color: var(--color-text);
}
.hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 85% 15%, rgba(232, 119, 34, 0.12), transparent 55%),
        radial-gradient(ellipse at 5% 95%, rgba(232, 119, 34, 0.06), transparent 60%),
        linear-gradient(180deg, #FFFFFF 0%, #FAF7F0 100%);
    z-index: 0;
}
.hero__bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(26, 26, 26, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 26, 26, 0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 75%);
    opacity: 0.6;
}
.hero__bg::after {
    content: '';
    position: absolute;
    right: -10%;
    top: 20%;
    width: 520px;
    height: 520px;
    max-width: 50vw;
    max-height: 50vw;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(232, 119, 34, 0.18), rgba(232, 119, 34, 0) 70%);
    filter: blur(8px);
}
.hero__watermark {
    position: absolute;
    bottom: -20px;
    left: -2vw;
    right: -2vw;
    z-index: 0;
    font-size: clamp(80px, 18vw, 240px);
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 0.9;
    color: rgba(26, 26, 26, 0.04);
    white-space: nowrap;
    overflow: hidden;
    pointer-events: none;
    user-select: none;
}
.hero__deco {
    position: absolute;
    right: -6%;
    top: 50%;
    transform: translateY(-50%);
    width: 70%;
    max-width: 1100px;
    height: auto;
    z-index: 0;
    opacity: 0.7;
    pointer-events: none;
    user-select: none;
    filter: drop-shadow(0 8px 24px rgba(26, 26, 26, 0.08));
}
.hero .container {
    max-width: 1440px;
    padding: 0 clamp(24px, 6vw, 96px);
}
.hero__inner {
    position: relative;
    z-index: 2;
    max-width: 640px;
}
.hero__eyebrow {
    font-size: 13px;
    letter-spacing: 0.25em;
    color: var(--color-orange);
    font-weight: 700;
    margin: 0 0 24px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.eyebrow-line {
    display: inline-block;
    width: 36px;
    height: 2px;
    background: var(--color-orange);
}
.hero__scroll {
    position: absolute;
    left: 24px;
    bottom: 28px;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 11px;
    letter-spacing: 0.3em;
    font-weight: 700;
    color: var(--color-muted);
    pointer-events: none;
}
.hero__scroll-line {
    display: block;
    width: 1px;
    height: 56px;
    background: linear-gradient(to bottom, var(--color-muted) 0%, var(--color-muted) 50%, transparent 100%);
    position: relative;
    overflow: hidden;
}
.hero__scroll-line::after {
    content: '';
    position: absolute;
    left: -1px;
    top: -20%;
    width: 3px;
    height: 30%;
    background: var(--color-orange);
    animation: scrollDown 2.4s var(--ease) infinite;
}
@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    60% { transform: translateY(280%); }
    100% { transform: translateY(280%); }
}
.hero__title {
    font-size: clamp(30px, 5.6vw, 56px);
    font-weight: 900;
    line-height: 1.32;
    margin: 0 0 28px;
    letter-spacing: 0.01em;
    color: var(--color-black);
}
.hero__accent {
    color: var(--color-orange);
    position: relative;
    display: inline-block;
}
.hero__lead {
    font-size: clamp(15px, 1.5vw, 17px);
    color: var(--color-text);
    margin: 0 0 40px;
    line-height: 2;
}
.hero__cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero__badges {
    list-style: none;
    padding: 0;
    margin: 48px 0 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    max-width: 620px;
}
.hero__badge {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.hero__badge:hover {
    transform: translateY(-2px);
    border-color: rgba(232, 119, 34, 0.5);
    background: rgba(255, 255, 255, 0.85);
}
.hero__badge-icon {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(232, 119, 34, 0.18) 0%, rgba(232, 119, 34, 0.05) 100%);
    color: var(--color-orange);
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero__badge-icon svg { width: 20px; height: 20px; }
.hero__badge-text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    min-width: 0;
}
.hero__badge-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-black);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hero__badge-sub {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--color-orange);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius);
    transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
    border: 2px solid transparent;
    min-width: 180px;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
    background: var(--color-orange);
    color: #fff;
    border-color: var(--color-orange);
}
.btn--primary:hover { background: var(--color-orange-dark); border-color: var(--color-orange-dark); }
.btn--ghost {
    background: transparent;
    color: var(--color-black);
    border-color: rgba(26, 26, 26, 0.25);
}
.btn--ghost:hover {
    background: var(--color-black);
    color: #fff;
    border-color: var(--color-black);
}
.section--cta .btn--ghost {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}
.section--cta .btn--ghost:hover {
    background: #fff;
    color: var(--color-black);
    border-color: #fff;
}

/* ===========================
   Sections
   =========================== */
.section {
    padding: 96px 0;
    position: relative;
    overflow: hidden;
}
.section::before,
.section::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    pointer-events: none;
    opacity: 0.5;
}
.section::before {
    top: 32px;
    right: 32px;
    background-image:
        linear-gradient(var(--color-orange) 0 0),
        linear-gradient(var(--color-orange) 0 0);
    background-size: 28px 2px, 2px 28px;
    background-position: top right, top right;
    background-repeat: no-repeat;
}
.section::after {
    bottom: 32px;
    left: 32px;
    background-image:
        linear-gradient(var(--color-orange) 0 0),
        linear-gradient(var(--color-orange) 0 0);
    background-size: 28px 2px, 2px 28px;
    background-position: bottom left, bottom left;
    background-repeat: no-repeat;
}
.section--cta::before,
.section--cta::after {
    background-image:
        linear-gradient(rgba(232, 119, 34, 0.85) 0 0),
        linear-gradient(rgba(232, 119, 34, 0.85) 0 0);
    opacity: 0.7;
}

/* Kanji watermark for sections */
.section__watermark {
    position: absolute;
    top: 50%;
    right: -1vw;
    transform: translateY(-50%);
    font-size: clamp(140px, 24vw, 360px);
    font-weight: 900;
    line-height: 0.85;
    letter-spacing: -0.04em;
    color: rgba(26, 26, 26, 0.04);
    pointer-events: none;
    user-select: none;
    z-index: 0;
    white-space: nowrap;
}
.section--alt .section__watermark { color: rgba(26, 26, 26, 0.05); }
.section--cta .section__watermark { color: rgba(255, 255, 255, 0.04); }
.section .container { position: relative; z-index: 1; }
.section--alt { background: var(--color-bg-alt); }
.section--cta {
    background: var(--color-bg-dark);
    color: #fff;
}
.section__eyebrow {
    font-size: 13px;
    letter-spacing: 0.25em;
    color: var(--color-orange);
    font-weight: 700;
    margin: 0 0 12px;
    text-align: center;
    position: relative;
    padding-top: 28px;
}
.section__eyebrow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 44px;
    height: 2px;
    background: var(--color-orange);
}
.section__eyebrow--light { color: var(--color-orange); }
.section__title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 900;
    text-align: center;
    margin: 0 0 16px;
    letter-spacing: 0.02em;
}
.section__title--light { color: #fff; }
.section__lead {
    text-align: center;
    color: var(--color-muted);
    margin: 0 auto 56px;
    max-width: 640px;
}
.section__sublabel {
    text-align: center;
    color: var(--color-orange);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin: 0 auto 24px;
    padding: 4px 14px;
    display: inline-block;
    border: 1px solid rgba(232, 119, 34, 0.3);
    border-radius: 999px;
    background: rgba(232, 119, 34, 0.06);
}
.section__title + .section__sublabel {
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

/* ===========================
   Service Overview
   =========================== */
.section--overview { background: #fff; }
.overview { max-width: 820px; }
.overview__body { text-align: center; margin-top: 40px; }
.overview__text {
    font-size: clamp(15px, 1.5vw, 17px);
    line-height: 2.1;
    color: var(--color-text);
    margin: 0 0 20px;
}
.overview__text:last-of-type { margin-bottom: 36px; }
.overview__motto {
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.8;
    margin: 0;
    padding: 28px 24px;
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
    position: relative;
}
.overview__motto::before,
.overview__motto::after {
    content: '';
    position: absolute;
    left: 50%;
    width: 60px;
    height: 2px;
    background: var(--color-orange);
    transform: translateX(-50%);
}
.overview__motto::before { top: -1px; }
.overview__motto::after { bottom: -1px; }
.overview__motto-sub {
    display: inline-block;
    font-size: 14px;
    font-weight: 400;
    color: var(--color-muted);
    margin-top: 8px;
    letter-spacing: 0.05em;
}

/* ===========================
   Services
   =========================== */
.section--services { background: var(--color-bg-alt); }
.services {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 56px;
}
.service-card {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 0;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
    display: flex;
    flex-direction: column;
}
.service-card__media {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-cream);
}
.service-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
    display: block;
}
.service-card:hover .service-card__media img {
    transform: scale(1.06);
}
.service-card__media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.45) 100%);
    pointer-events: none;
}
.service-card__media .service-card__num {
    position: absolute;
    bottom: 16px;
    left: 20px;
    margin: 0;
    color: #fff;
    z-index: 1;
}
.service-card__media .service-card__num::after {
    background: var(--color-orange);
}
.service-card__icon {
    margin: 28px 32px 0;
}
.service-card__name,
.service-card__desc,
.service-card__points,
.service-card__link {
    margin-left: 32px;
    margin-right: 32px;
}
.service-card__name { margin-top: 14px; }
.service-card__points { margin-bottom: 24px; }
.service-card__link { margin-bottom: 32px; }
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-orange), #FFB070);
    transform: scaleX(0.3);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
    z-index: 1;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 119, 34, 0.4);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card__num {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--color-muted);
    margin-bottom: 18px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.service-card__num::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1.5px;
    background: var(--color-orange);
}
.service-card__icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(232, 119, 34, 0.18) 0%, rgba(232, 119, 34, 0.05) 100%);
    color: var(--color-orange);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 6px 16px rgba(232, 119, 34, 0.15);
}
.service-card__icon svg { width: 32px; height: 32px; }
.service-card__name {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-black);
    margin-top: 0;
    margin-bottom: 14px;
    line-height: 1.5;
}
.service-card__desc {
    font-size: 14px;
    color: var(--color-muted);
    margin-top: 0;
    margin-bottom: 22px;
    line-height: 1.95;
}
.service-card__points {
    list-style: none;
    padding: 0;
    margin-top: 0;
    margin-bottom: 24px;
    border-top: 1px solid var(--color-line);
    flex: 1;
}
.service-card__points li {
    font-size: 13px;
    color: var(--color-text);
    padding: 10px 0 10px 22px;
    border-bottom: 1px solid var(--color-line);
    position: relative;
    line-height: 1.5;
}
.service-card__points li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 18px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-orange);
    border-bottom: 2px solid var(--color-orange);
    transform: rotate(-45deg);
}
.service-card__link {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-orange);
    align-self: flex-start;
    transition: gap 0.2s var(--ease), color 0.2s var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.service-card__link:hover {
    color: var(--color-orange-dark);
    gap: 10px;
}

/* ===========================
   About
   =========================== */
.about {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    align-items: start;
    max-width: 960px;
    margin: 40px auto 0;
}
.about__lead p {
    margin: 0 0 12px;
    font-size: 16px;
    line-height: 2;
}
.about__lead p:last-child { margin-bottom: 0; }
.about__note { font-size: 13px; }
.about__placeholder {
    color: var(--color-muted);
    font-size: 13px;
    background: rgba(232, 119, 34, 0.08);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px dashed rgba(232, 119, 34, 0.4);
}
.about__table {
    margin: 0;
    border-top: 1px solid var(--color-line);
}
.about__row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    padding: 20px 8px;
    border-bottom: 1px solid var(--color-line);
}
.about__row dt {
    font-weight: 700;
    color: var(--color-black);
    margin: 0;
}
.about__row dd {
    margin: 0;
    color: var(--color-text);
}

/* ===========================
   Service Flow
   =========================== */
.flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: flow;
    position: relative;
}
.flow__step {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 36px 24px 28px;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
    isolation: isolate;
}
.flow__step::before {
    content: attr(data-step);
    position: absolute;
    top: -32px;
    right: -12px;
    font-size: 140px;
    font-weight: 900;
    line-height: 1;
    color: rgba(232, 119, 34, 0.07);
    letter-spacing: -0.04em;
    pointer-events: none;
    z-index: 0;
    transition: color 0.3s var(--ease);
}
.flow__step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 119, 34, 0.35);
}
.flow__step:hover::before {
    color: rgba(232, 119, 34, 0.13);
}
.flow__step > * {
    position: relative;
    z-index: 1;
}
.flow__step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -22px;
    width: 24px;
    height: 14px;
    background-image: radial-gradient(circle, var(--color-orange) 1.5px, transparent 2px);
    background-size: 7px 7px;
    background-repeat: repeat-x;
    background-position: left center;
    transform: translateY(-50%);
    z-index: 3;
}
.flow__num {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--color-orange);
    margin-bottom: 18px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.flow__num::before {
    content: '';
    display: inline-block;
    width: 18px;
    height: 1.5px;
    background: var(--color-orange);
}
.flow__icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(232, 119, 34, 0.1);
    color: var(--color-orange);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 0 0 6px rgba(232, 119, 34, 0.04);
}
.flow__icon svg { width: 28px; height: 28px; }
.flow__title {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-black);
    margin: 0 0 10px;
    line-height: 1.5;
}
.flow__desc {
    font-size: 14px;
    color: var(--color-muted);
    margin: 0;
    line-height: 1.85;
}
.flow__note {
    text-align: center;
    color: var(--color-muted);
    font-size: 14px;
    margin: 40px 0 0;
}

/* ===========================
   Strengths
   =========================== */
.strengths {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 56px;
}
.strength {
    position: relative;
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 44px 32px 36px;
    overflow: hidden;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
    isolation: isolate;
}
.strength::before {
    content: attr(data-num);
    position: absolute;
    bottom: -40px;
    right: -20px;
    font-size: 220px;
    font-weight: 900;
    line-height: 0.85;
    color: rgba(232, 119, 34, 0.06);
    letter-spacing: -0.06em;
    pointer-events: none;
    z-index: 0;
    transition: color 0.35s var(--ease), transform 0.35s var(--ease);
}
.strength:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 119, 34, 0.4);
}
.strength:hover::before {
    color: rgba(232, 119, 34, 0.13);
    transform: scale(1.04);
}
.strength > * { position: relative; z-index: 1; }
.strength__icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(232, 119, 34, 0.18) 0%, rgba(232, 119, 34, 0.05) 100%);
    color: var(--color-orange);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 4px 14px rgba(232, 119, 34, 0.15);
}
.strength__icon svg { width: 28px; height: 28px; }
.strength__num {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--color-orange);
    margin: 0 0 14px;
}
.strength__num::before {
    content: 'STRENGTH';
    font-size: 11px;
    color: var(--color-muted);
    letter-spacing: 0.25em;
}
.strength__num::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1.5px;
    background: var(--color-orange);
}
.strength__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-black);
    margin: 0 0 14px;
    line-height: 1.5;
}
.strength__desc {
    font-size: 14px;
    color: var(--color-muted);
    margin: 0;
    line-height: 1.95;
}

/* ===========================
   Banner
   =========================== */
.banner {
    position: relative;
    width: 100%;
    min-height: 420px;
    overflow: hidden;
    color: #fff;
    display: flex;
    align-items: center;
    isolation: isolate;
}
.banner__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transform: scale(1.02);
    transition: transform 8s linear;
}
.banner:hover .banner__img { transform: scale(1.08); }
.banner__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(15, 15, 15, 0.85) 0%, rgba(15, 15, 15, 0.55) 60%, rgba(232, 119, 34, 0.45) 100%);
    z-index: 1;
}
.banner__inner {
    position: relative;
    z-index: 2;
    padding: 96px 24px;
    text-align: center;
}
.banner__eyebrow {
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--color-orange);
    font-weight: 700;
    margin: 0 0 20px;
    position: relative;
    padding-top: 24px;
}
.banner__eyebrow::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--color-orange);
}
.banner__title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    line-height: 1.4;
    margin: 0 0 24px;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
}
.banner__lead {
    font-size: clamp(14px, 1.4vw, 16px);
    color: rgba(255, 255, 255, 0.9);
    margin: 0 auto;
    max-width: 720px;
    line-height: 2;
}

/* ===========================
   Sponsorship
   =========================== */
.section--sponsorship {
    background:
        radial-gradient(ellipse at 15% 20%, rgba(232, 119, 34, 0.18), transparent 50%),
        linear-gradient(135deg, #0F0F0F 0%, #1F1F1F 60%, #2A2A2A 100%);
    color: #fff;
    overflow: hidden;
}
.section--sponsorship .section__title { color: #fff; }
.section--sponsorship .section__watermark { color: rgba(255, 255, 255, 0.04); }
.section--sponsorship::before,
.section--sponsorship::after {
    background-image:
        linear-gradient(rgba(232, 119, 34, 0.85) 0 0),
        linear-gradient(rgba(232, 119, 34, 0.85) 0 0);
    opacity: 0.7;
}
.sponsorship {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 64px;
    align-items: center;
}
.sponsorship__media {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: 16px;
}
.sponsorship__figure {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
    transition: transform 0.4s var(--ease);
}
.sponsorship__figure img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}
.sponsorship__figure--main {
    aspect-ratio: 16 / 11;
}
.sponsorship__figure--sub {
    aspect-ratio: 16 / 10;
    margin-left: 18%;
    transform: translateY(-32px);
    border-color: rgba(232, 119, 34, 0.35);
}
.sponsorship__figure:hover { transform: translateY(-4px); }
.sponsorship__figure--sub:hover { transform: translateY(-36px); }

.sponsorship__body {
    display: flex;
    flex-direction: column;
}
.sponsorship__body .section__eyebrow {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
}
.sponsorship__body .section__eyebrow::before {
    left: 0;
    transform: none;
}
.sponsorship__title {
    text-align: left;
    margin: 0 0 28px;
    line-height: 1.4;
}
.sponsorship__lead {
    color: rgba(255, 255, 255, 0.85);
    font-size: clamp(14px, 1.4vw, 16px);
    line-height: 2;
    margin: 0 0 18px;
}
.sponsorship__lead strong {
    color: var(--color-orange);
    font-weight: 700;
    letter-spacing: 0.02em;
}
.sponsorship__points {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.sponsorship__points li {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 16px;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.92);
}
.sponsorship__points li span {
    color: var(--color-orange);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.15em;
}

/* ===========================
   Stats
   =========================== */
.section--stats {
    background:
        radial-gradient(ellipse at 80% 20%, rgba(232, 119, 34, 0.10), transparent 55%),
        linear-gradient(180deg, #FFFFFF 0%, #F5EFE3 100%);
    color: var(--color-text);
    position: relative;
}
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 56px;
}
.stat {
    text-align: center;
    padding: 40px 20px 36px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: 0 4px 14px rgba(26, 26, 26, 0.04);
    transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.stat:hover {
    transform: translateY(-4px);
    border-color: rgba(232, 119, 34, 0.45);
    box-shadow: 0 12px 28px rgba(232, 119, 34, 0.12);
}
.stat__value {
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--color-orange-dark) 0%, var(--color-orange) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 18px;
    letter-spacing: -0.02em;
}
.stat__unit {
    font-size: 0.42em;
    font-weight: 700;
    margin-left: 4px;
    letter-spacing: 0.05em;
}
.stat__label {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 8px;
    letter-spacing: 0.08em;
}
.stat__desc {
    font-size: 12px;
    color: var(--color-muted);
    line-height: 1.7;
    margin: 0;
}
.stats__note {
    text-align: center;
    color: var(--color-muted);
    font-size: 12px;
    margin: 40px 0 0;
}

/* ===========================
   Contact
   =========================== */
.contact__lead {
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    max-width: 560px;
    margin: 0 auto 48px;
}
.contact__info {
    max-width: 560px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.contact__row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 16px;
    padding: 20px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.contact__row dt {
    font-weight: 700;
    color: var(--color-orange);
    margin: 0;
}
.contact__row dd {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}
.contact__link {
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.02em;
    border-bottom: 1px solid transparent;
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.contact__link:hover {
    color: var(--color-orange);
    border-bottom-color: var(--color-orange);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: #0E0E0E;
    color: rgba(255, 255, 255, 0.6);
    padding: 40px 0;
}
.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.footer__logo {
    height: 40px;
    width: auto;
    opacity: 0.9;
}
.footer__copy {
    margin: 0;
    font-size: 13px;
    letter-spacing: 0.05em;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 960px) {
    .sponsorship { grid-template-columns: 1fr; gap: 40px; }
    .sponsorship__figure--sub {
        margin-left: 12%;
        transform: translateY(-20px);
    }
    .sponsorship__figure--sub:hover { transform: translateY(-24px); }
    .sponsorship__points li { grid-template-columns: 110px 1fr; }
    .about { grid-template-columns: 1fr; gap: 32px; }
    .flow { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .flow__step:not(:last-child)::after { display: none; }
    .flow__step::before { font-size: 100px; top: -20px; right: -8px; }
    .strengths { grid-template-columns: 1fr; gap: 20px; }
    .strength { padding: 36px 28px 28px; }
    .strength::before { font-size: 180px; bottom: -30px; right: -12px; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .services { grid-template-columns: 1fr; gap: 20px; }
    .service-card__icon { margin: 24px 28px 0; }
    .service-card__name,
    .service-card__desc,
    .service-card__points,
    .service-card__link {
        margin-left: 28px;
        margin-right: 28px;
    }
    .service-card__link { margin-bottom: 28px; }
    .banner { min-height: 340px; }
    .banner__inner { padding: 64px 24px; }
    .section__watermark { font-size: clamp(120px, 30vw, 280px); right: -3vw; }
    .section::before, .section::after { width: 60px; height: 60px; }
}

@media (max-width: 720px) {
    :root { --header-h: 64px; }

    .container { padding: 0 20px; }
    .section { padding: 64px 0; }

    .header__logo img { height: 40px; }

    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-line);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
        box-shadow: var(--shadow-md);
    }
    .nav.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav__list {
        flex-direction: column;
        gap: 0;
        padding: 12px 0;
        align-items: stretch;
    }
    .nav__list li { width: 100%; }
    .nav__link {
        display: block;
        padding: 14px 24px;
        font-size: 16px;
    }
    .nav__link::after { display: none; }
    .nav__link--cta {
        margin: 12px 24px 12px;
        text-align: center;
    }
    .nav__toggle { display: flex; }

    .hero { min-height: 78vh; padding-top: calc(var(--header-h) + 24px); padding-bottom: 56px; }
    .hero__cta .btn { flex: 1; min-width: 140px; }
    .hero__deco {
        width: 100%;
        right: -10%;
        top: auto;
        bottom: 8%;
        transform: none;
        opacity: 0.18;
    }
    .hero__inner { max-width: 100%; }
    .hero__watermark { font-size: clamp(60px, 24vw, 160px); }
    .hero__scroll { display: none; }
    .hero__badges {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-top: 36px;
        max-width: 360px;
    }
    .hero__badge { padding: 12px 14px; }

    .flow {
        grid-template-columns: 1fr;
        gap: 14px;
        position: relative;
    }
    .flow__step { padding: 28px 22px; }
    .flow__step::before { font-size: 80px; top: -16px; right: -4px; }
    .flow__step:not(:last-child)::after {
        display: block;
        top: auto;
        right: 50%;
        bottom: -14px;
        transform: translateX(50%) rotate(90deg);
    }
    .sponsorship__figure--sub {
        margin-left: 0;
        transform: none;
    }
    .sponsorship__figure--sub:hover { transform: translateY(-4px); }
    .sponsorship__points li {
        grid-template-columns: 1fr;
        gap: 4px;
        padding: 12px 4px;
    }
    .stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat { padding: 28px 16px; }
    .section::before, .section::after { width: 48px; height: 48px; opacity: 0.4; }
    .section::before { top: 20px; right: 20px; }
    .section::after { bottom: 20px; left: 20px; }
    .section__watermark {
        font-size: clamp(80px, 38vw, 200px);
        right: -8vw;
        opacity: 0.7;
    }
    .strength__num { font-size: 11px; gap: 8px; }
    .stat__value { font-size: clamp(36px, 9vw, 52px); }

    .about__row, .contact__row {
        grid-template-columns: 100px 1fr;
        gap: 12px;
        padding: 16px 4px;
        font-size: 14px;
    }

    .footer__inner { flex-direction: column; text-align: center; }
}

@media (max-width: 420px) {
    .hero__cta { flex-direction: column; }
    .hero__cta .btn { width: 100%; }
    .about__row, .contact__row {
        grid-template-columns: 1fr;
        gap: 4px;
    }
    .stats { grid-template-columns: 1fr; }
    .strength { padding: 32px 22px 24px; }
    .strength::before { font-size: 140px; }
}

/* ===========================
   Reveal animation
   =========================== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}